1 //===-- ARMAsmParser.cpp - Parse ARM assembly to MCInst instructions ------===//
3 // The LLVM Compiler Infrastructure
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
10 #include "ARMFeatures.h"
11 #include "MCTargetDesc/ARMAddressingModes.h"
12 #include "MCTargetDesc/ARMBaseInfo.h"
13 #include "MCTargetDesc/ARMMCExpr.h"
14 #include "llvm/ADT/STLExtras.h"
15 #include "llvm/ADT/SmallVector.h"
16 #include "llvm/ADT/StringExtras.h"
17 #include "llvm/ADT/StringSwitch.h"
18 #include "llvm/ADT/Triple.h"
19 #include "llvm/ADT/Twine.h"
20 #include "llvm/MC/MCAsmInfo.h"
21 #include "llvm/MC/MCAssembler.h"
22 #include "llvm/MC/MCContext.h"
23 #include "llvm/MC/MCDisassembler/MCDisassembler.h"
24 #include "llvm/MC/MCELFStreamer.h"
25 #include "llvm/MC/MCExpr.h"
26 #include "llvm/MC/MCInst.h"
27 #include "llvm/MC/MCInstrDesc.h"
28 #include "llvm/MC/MCInstrInfo.h"
29 #include "llvm/MC/MCObjectFileInfo.h"
30 #include "llvm/MC/MCParser/MCAsmLexer.h"
31 #include "llvm/MC/MCParser/MCAsmParser.h"
32 #include "llvm/MC/MCParser/MCAsmParserUtils.h"
33 #include "llvm/MC/MCParser/MCParsedAsmOperand.h"
34 #include "llvm/MC/MCParser/MCTargetAsmParser.h"
35 #include "llvm/MC/MCRegisterInfo.h"
36 #include "llvm/MC/MCSection.h"
37 #include "llvm/MC/MCStreamer.h"
38 #include "llvm/MC/MCSubtargetInfo.h"
39 #include "llvm/MC/MCSymbol.h"
40 #include "llvm/Support/ARMBuildAttributes.h"
41 #include "llvm/Support/ARMEHABI.h"
42 #include "llvm/Support/COFF.h"
43 #include "llvm/Support/CommandLine.h"
44 #include "llvm/Support/Debug.h"
45 #include "llvm/Support/ELF.h"
46 #include "llvm/Support/MathExtras.h"
47 #include "llvm/Support/SourceMgr.h"
48 #include "llvm/Support/TargetParser.h"
49 #include "llvm/Support/TargetRegistry.h"
50 #include "llvm/Support/raw_ostream.h"
56 enum class ImplicitItModeTy { Always, Never, ARMOnly, ThumbOnly };
58 static cl::opt<ImplicitItModeTy> ImplicitItMode(
59 "arm-implicit-it", cl::init(ImplicitItModeTy::ARMOnly),
60 cl::desc("Allow conditional instructions outdside of an IT block"),
61 cl::values(clEnumValN(ImplicitItModeTy::Always, "always",
62 "Accept in both ISAs, emit implicit ITs in Thumb"),
63 clEnumValN(ImplicitItModeTy::Never, "never",
64 "Warn in ARM, reject in Thumb"),
65 clEnumValN(ImplicitItModeTy::ARMOnly, "arm",
66 "Accept in ARM, reject in Thumb"),
67 clEnumValN(ImplicitItModeTy::ThumbOnly, "thumb",
68 "Warn in ARM, emit implicit ITs in Thumb")));
72 enum VectorLaneTy { NoLanes, AllLanes, IndexedLane };
77 typedef SmallVector<SMLoc, 4> Locs;
82 Locs PersonalityIndexLocs;
87 UnwindContext(MCAsmParser &P) : Parser(P), FPReg(ARM::SP) {}
89 bool hasFnStart() const { return !FnStartLocs.empty(); }
90 bool cantUnwind() const { return !CantUnwindLocs.empty(); }
91 bool hasHandlerData() const { return !HandlerDataLocs.empty(); }
92 bool hasPersonality() const {
93 return !(PersonalityLocs.empty() && PersonalityIndexLocs.empty());
96 void recordFnStart(SMLoc L) { FnStartLocs.push_back(L); }
97 void recordCantUnwind(SMLoc L) { CantUnwindLocs.push_back(L); }
98 void recordPersonality(SMLoc L) { PersonalityLocs.push_back(L); }
99 void recordHandlerData(SMLoc L) { HandlerDataLocs.push_back(L); }
100 void recordPersonalityIndex(SMLoc L) { PersonalityIndexLocs.push_back(L); }
102 void saveFPReg(int Reg) { FPReg = Reg; }
103 int getFPReg() const { return FPReg; }
105 void emitFnStartLocNotes() const {
106 for (Locs::const_iterator FI = FnStartLocs.begin(), FE = FnStartLocs.end();
108 Parser.Note(*FI, ".fnstart was specified here");
110 void emitCantUnwindLocNotes() const {
111 for (Locs::const_iterator UI = CantUnwindLocs.begin(),
112 UE = CantUnwindLocs.end(); UI != UE; ++UI)
113 Parser.Note(*UI, ".cantunwind was specified here");
115 void emitHandlerDataLocNotes() const {
116 for (Locs::const_iterator HI = HandlerDataLocs.begin(),
117 HE = HandlerDataLocs.end(); HI != HE; ++HI)
118 Parser.Note(*HI, ".handlerdata was specified here");
120 void emitPersonalityLocNotes() const {
121 for (Locs::const_iterator PI = PersonalityLocs.begin(),
122 PE = PersonalityLocs.end(),
123 PII = PersonalityIndexLocs.begin(),
124 PIE = PersonalityIndexLocs.end();
125 PI != PE || PII != PIE;) {
126 if (PI != PE && (PII == PIE || PI->getPointer() < PII->getPointer()))
127 Parser.Note(*PI++, ".personality was specified here");
128 else if (PII != PIE && (PI == PE || PII->getPointer() < PI->getPointer()))
129 Parser.Note(*PII++, ".personalityindex was specified here");
131 llvm_unreachable(".personality and .personalityindex cannot be "
132 "at the same location");
137 FnStartLocs = Locs();
138 CantUnwindLocs = Locs();
139 PersonalityLocs = Locs();
140 HandlerDataLocs = Locs();
141 PersonalityIndexLocs = Locs();
146 class ARMAsmParser : public MCTargetAsmParser {
147 const MCInstrInfo &MII;
148 const MCRegisterInfo *MRI;
151 ARMTargetStreamer &getTargetStreamer() {
152 assert(getParser().getStreamer().getTargetStreamer() &&
153 "do not have a target streamer");
154 MCTargetStreamer &TS = *getParser().getStreamer().getTargetStreamer();
155 return static_cast<ARMTargetStreamer &>(TS);
158 // Map of register aliases registers via the .req directive.
159 StringMap<unsigned> RegisterReqs;
161 bool NextSymbolIsThumb;
163 bool useImplicitITThumb() const {
164 return ImplicitItMode == ImplicitItModeTy::Always ||
165 ImplicitItMode == ImplicitItModeTy::ThumbOnly;
168 bool useImplicitITARM() const {
169 return ImplicitItMode == ImplicitItModeTy::Always ||
170 ImplicitItMode == ImplicitItModeTy::ARMOnly;
174 ARMCC::CondCodes Cond; // Condition for IT block.
175 unsigned Mask:4; // Condition mask for instructions.
176 // Starting at first 1 (from lsb).
177 // '1' condition as indicated in IT.
178 // '0' inverse of condition (else).
179 // Count of instructions in IT block is
180 // 4 - trailingzeroes(mask)
181 // Note that this does not have the same encoding
182 // as in the IT instruction, which also depends
183 // on the low bit of the condition code.
185 unsigned CurPosition; // Current position in parsing of IT
186 // block. In range [0,4], with 0 being the IT
187 // instruction itself. Initialized according to
188 // count of instructions in block. ~0U if no
191 bool IsExplicit; // true - The IT instruction was present in the
192 // input, we should not modify it.
193 // false - The IT instruction was added
194 // implicitly, we can extend it if that
198 llvm::SmallVector<MCInst, 4> PendingConditionalInsts;
200 void flushPendingInstructions(MCStreamer &Out) override {
201 if (!inImplicitITBlock()) {
202 assert(PendingConditionalInsts.size() == 0);
206 // Emit the IT instruction
207 unsigned Mask = getITMaskEncoding();
209 ITInst.setOpcode(ARM::t2IT);
210 ITInst.addOperand(MCOperand::createImm(ITState.Cond));
211 ITInst.addOperand(MCOperand::createImm(Mask));
212 Out.EmitInstruction(ITInst, getSTI());
214 // Emit the conditonal instructions
215 assert(PendingConditionalInsts.size() <= 4);
216 for (const MCInst &Inst : PendingConditionalInsts) {
217 Out.EmitInstruction(Inst, getSTI());
219 PendingConditionalInsts.clear();
221 // Clear the IT state
223 ITState.CurPosition = ~0U;
226 bool inITBlock() { return ITState.CurPosition != ~0U; }
227 bool inExplicitITBlock() { return inITBlock() && ITState.IsExplicit; }
228 bool inImplicitITBlock() { return inITBlock() && !ITState.IsExplicit; }
229 bool lastInITBlock() {
230 return ITState.CurPosition == 4 - countTrailingZeros(ITState.Mask);
232 void forwardITPosition() {
233 if (!inITBlock()) return;
234 // Move to the next instruction in the IT block, if there is one. If not,
235 // mark the block as done, except for implicit IT blocks, which we leave
236 // open until we find an instruction that can't be added to it.
237 unsigned TZ = countTrailingZeros(ITState.Mask);
238 if (++ITState.CurPosition == 5 - TZ && ITState.IsExplicit)
239 ITState.CurPosition = ~0U; // Done with the IT block after this.
242 // Rewind the state of the current IT block, removing the last slot from it.
243 void rewindImplicitITPosition() {
244 assert(inImplicitITBlock());
245 assert(ITState.CurPosition > 1);
246 ITState.CurPosition--;
247 unsigned TZ = countTrailingZeros(ITState.Mask);
248 unsigned NewMask = 0;
249 NewMask |= ITState.Mask & (0xC << TZ);
250 NewMask |= 0x2 << TZ;
251 ITState.Mask = NewMask;
254 // Rewind the state of the current IT block, removing the last slot from it.
255 // If we were at the first slot, this closes the IT block.
256 void discardImplicitITBlock() {
257 assert(inImplicitITBlock());
258 assert(ITState.CurPosition == 1);
259 ITState.CurPosition = ~0U;
263 // Get the encoding of the IT mask, as it will appear in an IT instruction.
264 unsigned getITMaskEncoding() {
266 unsigned Mask = ITState.Mask;
267 unsigned TZ = countTrailingZeros(Mask);
268 if ((ITState.Cond & 1) == 0) {
269 assert(Mask && TZ <= 3 && "illegal IT mask value!");
270 Mask ^= (0xE << TZ) & 0xF;
275 // Get the condition code corresponding to the current IT block slot.
276 ARMCC::CondCodes currentITCond() {
278 if (ITState.CurPosition == 1)
281 MaskBit = (ITState.Mask >> (5 - ITState.CurPosition)) & 1;
283 return MaskBit ? ITState.Cond : ARMCC::getOppositeCondition(ITState.Cond);
286 // Invert the condition of the current IT block slot without changing any
287 // other slots in the same block.
288 void invertCurrentITCondition() {
289 if (ITState.CurPosition == 1) {
290 ITState.Cond = ARMCC::getOppositeCondition(ITState.Cond);
292 ITState.Mask ^= 1 << (5 - ITState.CurPosition);
296 // Returns true if the current IT block is full (all 4 slots used).
297 bool isITBlockFull() {
298 return inITBlock() && (ITState.Mask & 1);
301 // Extend the current implicit IT block to have one more slot with the given
303 void extendImplicitITBlock(ARMCC::CondCodes Cond) {
304 assert(inImplicitITBlock());
305 assert(!isITBlockFull());
306 assert(Cond == ITState.Cond ||
307 Cond == ARMCC::getOppositeCondition(ITState.Cond));
308 unsigned TZ = countTrailingZeros(ITState.Mask);
309 unsigned NewMask = 0;
310 // Keep any existing condition bits.
311 NewMask |= ITState.Mask & (0xE << TZ);
312 // Insert the new condition bit.
313 NewMask |= (Cond == ITState.Cond) << TZ;
314 // Move the trailing 1 down one bit.
315 NewMask |= 1 << (TZ - 1);
316 ITState.Mask = NewMask;
319 // Create a new implicit IT block with a dummy condition code.
320 void startImplicitITBlock() {
321 assert(!inITBlock());
322 ITState.Cond = ARMCC::AL;
324 ITState.CurPosition = 1;
325 ITState.IsExplicit = false;
329 // Create a new explicit IT block with the given condition and mask. The mask
330 // should be in the parsed format, with a 1 implying 't', regardless of the
331 // low bit of the condition.
332 void startExplicitITBlock(ARMCC::CondCodes Cond, unsigned Mask) {
333 assert(!inITBlock());
336 ITState.CurPosition = 0;
337 ITState.IsExplicit = true;
341 void Note(SMLoc L, const Twine &Msg, SMRange Range = None) {
342 return getParser().Note(L, Msg, Range);
344 bool Warning(SMLoc L, const Twine &Msg, SMRange Range = None) {
345 return getParser().Warning(L, Msg, Range);
347 bool Error(SMLoc L, const Twine &Msg, SMRange Range = None) {
348 return getParser().Error(L, Msg, Range);
351 bool validatetLDMRegList(const MCInst &Inst, const OperandVector &Operands,
352 unsigned ListNo, bool IsARPop = false);
353 bool validatetSTMRegList(const MCInst &Inst, const OperandVector &Operands,
356 int tryParseRegister();
357 bool tryParseRegisterWithWriteBack(OperandVector &);
358 int tryParseShiftRegister(OperandVector &);
359 bool parseRegisterList(OperandVector &);
360 bool parseMemory(OperandVector &);
361 bool parseOperand(OperandVector &, StringRef Mnemonic);
362 bool parsePrefix(ARMMCExpr::VariantKind &RefKind);
363 bool parseMemRegOffsetShift(ARM_AM::ShiftOpc &ShiftType,
364 unsigned &ShiftAmount);
365 bool parseLiteralValues(unsigned Size, SMLoc L);
366 bool parseDirectiveThumb(SMLoc L);
367 bool parseDirectiveARM(SMLoc L);
368 bool parseDirectiveThumbFunc(SMLoc L);
369 bool parseDirectiveCode(SMLoc L);
370 bool parseDirectiveSyntax(SMLoc L);
371 bool parseDirectiveReq(StringRef Name, SMLoc L);
372 bool parseDirectiveUnreq(SMLoc L);
373 bool parseDirectiveArch(SMLoc L);
374 bool parseDirectiveEabiAttr(SMLoc L);
375 bool parseDirectiveCPU(SMLoc L);
376 bool parseDirectiveFPU(SMLoc L);
377 bool parseDirectiveFnStart(SMLoc L);
378 bool parseDirectiveFnEnd(SMLoc L);
379 bool parseDirectiveCantUnwind(SMLoc L);
380 bool parseDirectivePersonality(SMLoc L);
381 bool parseDirectiveHandlerData(SMLoc L);
382 bool parseDirectiveSetFP(SMLoc L);
383 bool parseDirectivePad(SMLoc L);
384 bool parseDirectiveRegSave(SMLoc L, bool IsVector);
385 bool parseDirectiveInst(SMLoc L, char Suffix = '\0');
386 bool parseDirectiveLtorg(SMLoc L);
387 bool parseDirectiveEven(SMLoc L);
388 bool parseDirectivePersonalityIndex(SMLoc L);
389 bool parseDirectiveUnwindRaw(SMLoc L);
390 bool parseDirectiveTLSDescSeq(SMLoc L);
391 bool parseDirectiveMovSP(SMLoc L);
392 bool parseDirectiveObjectArch(SMLoc L);
393 bool parseDirectiveArchExtension(SMLoc L);
394 bool parseDirectiveAlign(SMLoc L);
395 bool parseDirectiveThumbSet(SMLoc L);
397 StringRef splitMnemonic(StringRef Mnemonic, unsigned &PredicationCode,
398 bool &CarrySetting, unsigned &ProcessorIMod,
400 void getMnemonicAcceptInfo(StringRef Mnemonic, StringRef FullInst,
401 bool &CanAcceptCarrySet,
402 bool &CanAcceptPredicationCode);
404 void tryConvertingToTwoOperandForm(StringRef Mnemonic, bool CarrySetting,
405 OperandVector &Operands);
406 bool isThumb() const {
407 // FIXME: Can tablegen auto-generate this?
408 return getSTI().getFeatureBits()[ARM::ModeThumb];
410 bool isThumbOne() const {
411 return isThumb() && !getSTI().getFeatureBits()[ARM::FeatureThumb2];
413 bool isThumbTwo() const {
414 return isThumb() && getSTI().getFeatureBits()[ARM::FeatureThumb2];
416 bool hasThumb() const {
417 return getSTI().getFeatureBits()[ARM::HasV4TOps];
419 bool hasThumb2() const {
420 return getSTI().getFeatureBits()[ARM::FeatureThumb2];
422 bool hasV6Ops() const {
423 return getSTI().getFeatureBits()[ARM::HasV6Ops];
425 bool hasV6T2Ops() const {
426 return getSTI().getFeatureBits()[ARM::HasV6T2Ops];
428 bool hasV6MOps() const {
429 return getSTI().getFeatureBits()[ARM::HasV6MOps];
431 bool hasV7Ops() const {
432 return getSTI().getFeatureBits()[ARM::HasV7Ops];
434 bool hasV8Ops() const {
435 return getSTI().getFeatureBits()[ARM::HasV8Ops];
437 bool hasV8MBaseline() const {
438 return getSTI().getFeatureBits()[ARM::HasV8MBaselineOps];
440 bool hasV8MMainline() const {
441 return getSTI().getFeatureBits()[ARM::HasV8MMainlineOps];
443 bool has8MSecExt() const {
444 return getSTI().getFeatureBits()[ARM::Feature8MSecExt];
446 bool hasARM() const {
447 return !getSTI().getFeatureBits()[ARM::FeatureNoARM];
449 bool hasDSP() const {
450 return getSTI().getFeatureBits()[ARM::FeatureDSP];
452 bool hasD16() const {
453 return getSTI().getFeatureBits()[ARM::FeatureD16];
455 bool hasV8_1aOps() const {
456 return getSTI().getFeatureBits()[ARM::HasV8_1aOps];
458 bool hasRAS() const {
459 return getSTI().getFeatureBits()[ARM::FeatureRAS];
463 MCSubtargetInfo &STI = copySTI();
464 uint64_t FB = ComputeAvailableFeatures(STI.ToggleFeature(ARM::ModeThumb));
465 setAvailableFeatures(FB);
467 void FixModeAfterArchChange(bool WasThumb, SMLoc Loc);
468 bool isMClass() const {
469 return getSTI().getFeatureBits()[ARM::FeatureMClass];
472 /// @name Auto-generated Match Functions
475 #define GET_ASSEMBLER_HEADER
476 #include "ARMGenAsmMatcher.inc"
480 OperandMatchResultTy parseITCondCode(OperandVector &);
481 OperandMatchResultTy parseCoprocNumOperand(OperandVector &);
482 OperandMatchResultTy parseCoprocRegOperand(OperandVector &);
483 OperandMatchResultTy parseCoprocOptionOperand(OperandVector &);
484 OperandMatchResultTy parseMemBarrierOptOperand(OperandVector &);
485 OperandMatchResultTy parseInstSyncBarrierOptOperand(OperandVector &);
486 OperandMatchResultTy parseProcIFlagsOperand(OperandVector &);
487 OperandMatchResultTy parseMSRMaskOperand(OperandVector &);
488 OperandMatchResultTy parseBankedRegOperand(OperandVector &);
489 OperandMatchResultTy parsePKHImm(OperandVector &O, StringRef Op, int Low,
491 OperandMatchResultTy parsePKHLSLImm(OperandVector &O) {
492 return parsePKHImm(O, "lsl", 0, 31);
494 OperandMatchResultTy parsePKHASRImm(OperandVector &O) {
495 return parsePKHImm(O, "asr", 1, 32);
497 OperandMatchResultTy parseSetEndImm(OperandVector &);
498 OperandMatchResultTy parseShifterImm(OperandVector &);
499 OperandMatchResultTy parseRotImm(OperandVector &);
500 OperandMatchResultTy parseModImm(OperandVector &);
501 OperandMatchResultTy parseBitfield(OperandVector &);
502 OperandMatchResultTy parsePostIdxReg(OperandVector &);
503 OperandMatchResultTy parseAM3Offset(OperandVector &);
504 OperandMatchResultTy parseFPImm(OperandVector &);
505 OperandMatchResultTy parseVectorList(OperandVector &);
506 OperandMatchResultTy parseVectorLane(VectorLaneTy &LaneKind, unsigned &Index,
509 // Asm Match Converter Methods
510 void cvtThumbMultiply(MCInst &Inst, const OperandVector &);
511 void cvtThumbBranches(MCInst &Inst, const OperandVector &);
513 bool validateInstruction(MCInst &Inst, const OperandVector &Ops);
514 bool processInstruction(MCInst &Inst, const OperandVector &Ops, MCStreamer &Out);
515 bool shouldOmitCCOutOperand(StringRef Mnemonic, OperandVector &Operands);
516 bool shouldOmitPredicateOperand(StringRef Mnemonic, OperandVector &Operands);
517 bool isITBlockTerminator(MCInst &Inst) const;
520 enum ARMMatchResultTy {
521 Match_RequiresITBlock = FIRST_TARGET_MATCH_RESULT_TY,
522 Match_RequiresNotITBlock,
524 Match_RequiresThumb2,
526 Match_RequiresFlagSetting,
527 #define GET_OPERAND_DIAGNOSTIC_TYPES
528 #include "ARMGenAsmMatcher.inc"
532 ARMAsmParser(const MCSubtargetInfo &STI, MCAsmParser &Parser,
533 const MCInstrInfo &MII, const MCTargetOptions &Options)
534 : MCTargetAsmParser(Options, STI), MII(MII), UC(Parser) {
535 MCAsmParserExtension::Initialize(Parser);
537 // Cache the MCRegisterInfo.
538 MRI = getContext().getRegisterInfo();
540 // Initialize the set of available features.
541 setAvailableFeatures(ComputeAvailableFeatures(STI.getFeatureBits()));
543 // Not in an ITBlock to start with.
544 ITState.CurPosition = ~0U;
546 NextSymbolIsThumb = false;
549 // Implementation of the MCTargetAsmParser interface:
550 bool ParseRegister(unsigned &RegNo, SMLoc &StartLoc, SMLoc &EndLoc) override;
551 bool ParseInstruction(ParseInstructionInfo &Info, StringRef Name,
552 SMLoc NameLoc, OperandVector &Operands) override;
553 bool ParseDirective(AsmToken DirectiveID) override;
555 unsigned validateTargetOperandClass(MCParsedAsmOperand &Op,
556 unsigned Kind) override;
557 unsigned checkTargetMatchPredicate(MCInst &Inst) override;
559 bool MatchAndEmitInstruction(SMLoc IDLoc, unsigned &Opcode,
560 OperandVector &Operands, MCStreamer &Out,
562 bool MatchingInlineAsm) override;
563 unsigned MatchInstruction(OperandVector &Operands, MCInst &Inst,
564 uint64_t &ErrorInfo, bool MatchingInlineAsm,
565 bool &EmitInITBlock, MCStreamer &Out);
566 void onLabelParsed(MCSymbol *Symbol) override;
568 } // end anonymous namespace
572 /// ARMOperand - Instances of this class represent a parsed ARM machine
574 class ARMOperand : public MCParsedAsmOperand {
584 k_InstSyncBarrierOpt,
596 k_VectorListAllLanes,
603 k_ConstantPoolImmediate,
604 k_BitfieldDescriptor,
608 SMLoc StartLoc, EndLoc, AlignmentLoc;
609 SmallVector<unsigned, 8> Registers;
612 ARMCC::CondCodes Val;
619 struct CoprocOptionOp {
632 ARM_ISB::InstSyncBOpt Val;
636 ARM_PROC::IFlags Val;
656 // A vector register list is a sequential list of 1 to 4 registers.
657 struct VectorListOp {
664 struct VectorIndexOp {
672 /// Combined record for all forms of ARM address expressions.
675 // Offset is in OffsetReg or OffsetImm. If both are zero, no offset
677 const MCConstantExpr *OffsetImm; // Offset immediate value
678 unsigned OffsetRegNum; // Offset register num, when OffsetImm == NULL
679 ARM_AM::ShiftOpc ShiftType; // Shift type for OffsetReg
680 unsigned ShiftImm; // shift for OffsetReg.
681 unsigned Alignment; // 0 = no alignment specified
682 // n = alignment in bytes (2, 4, 8, 16, or 32)
683 unsigned isNegative : 1; // Negated OffsetReg? (~'U' bit)
686 struct PostIdxRegOp {
689 ARM_AM::ShiftOpc ShiftTy;
693 struct ShifterImmOp {
698 struct RegShiftedRegOp {
699 ARM_AM::ShiftOpc ShiftTy;
705 struct RegShiftedImmOp {
706 ARM_AM::ShiftOpc ShiftTy;
728 struct CoprocOptionOp CoprocOption;
729 struct MBOptOp MBOpt;
730 struct ISBOptOp ISBOpt;
731 struct ITMaskOp ITMask;
732 struct IFlagsOp IFlags;
733 struct MMaskOp MMask;
734 struct BankedRegOp BankedReg;
737 struct VectorListOp VectorList;
738 struct VectorIndexOp VectorIndex;
740 struct MemoryOp Memory;
741 struct PostIdxRegOp PostIdxReg;
742 struct ShifterImmOp ShifterImm;
743 struct RegShiftedRegOp RegShiftedReg;
744 struct RegShiftedImmOp RegShiftedImm;
745 struct RotImmOp RotImm;
746 struct ModImmOp ModImm;
747 struct BitfieldOp Bitfield;
751 ARMOperand(KindTy K) : MCParsedAsmOperand(), Kind(K) {}
753 /// getStartLoc - Get the location of the first token of this operand.
754 SMLoc getStartLoc() const override { return StartLoc; }
755 /// getEndLoc - Get the location of the last token of this operand.
756 SMLoc getEndLoc() const override { return EndLoc; }
757 /// getLocRange - Get the range between the first and last token of this
759 SMRange getLocRange() const { return SMRange(StartLoc, EndLoc); }
761 /// getAlignmentLoc - Get the location of the Alignment token of this operand.
762 SMLoc getAlignmentLoc() const {
763 assert(Kind == k_Memory && "Invalid access!");
767 ARMCC::CondCodes getCondCode() const {
768 assert(Kind == k_CondCode && "Invalid access!");
772 unsigned getCoproc() const {
773 assert((Kind == k_CoprocNum || Kind == k_CoprocReg) && "Invalid access!");
777 StringRef getToken() const {
778 assert(Kind == k_Token && "Invalid access!");
779 return StringRef(Tok.Data, Tok.Length);
782 unsigned getReg() const override {
783 assert((Kind == k_Register || Kind == k_CCOut) && "Invalid access!");
787 const SmallVectorImpl<unsigned> &getRegList() const {
788 assert((Kind == k_RegisterList || Kind == k_DPRRegisterList ||
789 Kind == k_SPRRegisterList) && "Invalid access!");
793 const MCExpr *getImm() const {
794 assert(isImm() && "Invalid access!");
798 const MCExpr *getConstantPoolImm() const {
799 assert(isConstantPoolImm() && "Invalid access!");
803 unsigned getVectorIndex() const {
804 assert(Kind == k_VectorIndex && "Invalid access!");
805 return VectorIndex.Val;
808 ARM_MB::MemBOpt getMemBarrierOpt() const {
809 assert(Kind == k_MemBarrierOpt && "Invalid access!");
813 ARM_ISB::InstSyncBOpt getInstSyncBarrierOpt() const {
814 assert(Kind == k_InstSyncBarrierOpt && "Invalid access!");
818 ARM_PROC::IFlags getProcIFlags() const {
819 assert(Kind == k_ProcIFlags && "Invalid access!");
823 unsigned getMSRMask() const {
824 assert(Kind == k_MSRMask && "Invalid access!");
828 unsigned getBankedReg() const {
829 assert(Kind == k_BankedReg && "Invalid access!");
830 return BankedReg.Val;
833 bool isCoprocNum() const { return Kind == k_CoprocNum; }
834 bool isCoprocReg() const { return Kind == k_CoprocReg; }
835 bool isCoprocOption() const { return Kind == k_CoprocOption; }
836 bool isCondCode() const { return Kind == k_CondCode; }
837 bool isCCOut() const { return Kind == k_CCOut; }
838 bool isITMask() const { return Kind == k_ITCondMask; }
839 bool isITCondCode() const { return Kind == k_CondCode; }
840 bool isImm() const override {
841 return Kind == k_Immediate;
844 bool isARMBranchTarget() const {
845 if (!isImm()) return false;
847 if (const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm()))
848 return CE->getValue() % 4 == 0;
853 bool isThumbBranchTarget() const {
854 if (!isImm()) return false;
856 if (const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm()))
857 return CE->getValue() % 2 == 0;
861 // checks whether this operand is an unsigned offset which fits is a field
862 // of specified width and scaled by a specific number of bits
863 template<unsigned width, unsigned scale>
864 bool isUnsignedOffset() const {
865 if (!isImm()) return false;
866 if (isa<MCSymbolRefExpr>(Imm.Val)) return true;
867 if (const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(Imm.Val)) {
868 int64_t Val = CE->getValue();
869 int64_t Align = 1LL << scale;
870 int64_t Max = Align * ((1LL << width) - 1);
871 return ((Val % Align) == 0) && (Val >= 0) && (Val <= Max);
875 // checks whether this operand is an signed offset which fits is a field
876 // of specified width and scaled by a specific number of bits
877 template<unsigned width, unsigned scale>
878 bool isSignedOffset() const {
879 if (!isImm()) return false;
880 if (isa<MCSymbolRefExpr>(Imm.Val)) return true;
881 if (const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(Imm.Val)) {
882 int64_t Val = CE->getValue();
883 int64_t Align = 1LL << scale;
884 int64_t Max = Align * ((1LL << (width-1)) - 1);
885 int64_t Min = -Align * (1LL << (width-1));
886 return ((Val % Align) == 0) && (Val >= Min) && (Val <= Max);
891 // checks whether this operand is a memory operand computed as an offset
892 // applied to PC. the offset may have 8 bits of magnitude and is represented
893 // with two bits of shift. textually it may be either [pc, #imm], #imm or
894 // relocable expression...
895 bool isThumbMemPC() const {
898 if (isa<MCSymbolRefExpr>(Imm.Val)) return true;
899 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(Imm.Val);
900 if (!CE) return false;
901 Val = CE->getValue();
904 if(!Memory.OffsetImm || Memory.OffsetRegNum) return false;
905 if(Memory.BaseRegNum != ARM::PC) return false;
906 Val = Memory.OffsetImm->getValue();
909 return ((Val % 4) == 0) && (Val >= 0) && (Val <= 1020);
911 bool isFPImm() const {
912 if (!isImm()) return false;
913 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
914 if (!CE) return false;
915 int Val = ARM_AM::getFP32Imm(APInt(32, CE->getValue()));
918 bool isFBits16() const {
919 if (!isImm()) return false;
920 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
921 if (!CE) return false;
922 int64_t Value = CE->getValue();
923 return Value >= 0 && Value <= 16;
925 bool isFBits32() const {
926 if (!isImm()) return false;
927 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
928 if (!CE) return false;
929 int64_t Value = CE->getValue();
930 return Value >= 1 && Value <= 32;
932 bool isImm8s4() const {
933 if (!isImm()) return false;
934 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
935 if (!CE) return false;
936 int64_t Value = CE->getValue();
937 return ((Value & 3) == 0) && Value >= -1020 && Value <= 1020;
939 bool isImm0_1020s4() const {
940 if (!isImm()) return false;
941 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
942 if (!CE) return false;
943 int64_t Value = CE->getValue();
944 return ((Value & 3) == 0) && Value >= 0 && Value <= 1020;
946 bool isImm0_508s4() const {
947 if (!isImm()) return false;
948 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
949 if (!CE) return false;
950 int64_t Value = CE->getValue();
951 return ((Value & 3) == 0) && Value >= 0 && Value <= 508;
953 bool isImm0_508s4Neg() const {
954 if (!isImm()) return false;
955 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
956 if (!CE) return false;
957 int64_t Value = -CE->getValue();
958 // explicitly exclude zero. we want that to use the normal 0_508 version.
959 return ((Value & 3) == 0) && Value > 0 && Value <= 508;
961 bool isImm0_239() const {
962 if (!isImm()) return false;
963 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
964 if (!CE) return false;
965 int64_t Value = CE->getValue();
966 return Value >= 0 && Value < 240;
968 bool isImm0_255() const {
969 if (!isImm()) return false;
970 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
971 if (!CE) return false;
972 int64_t Value = CE->getValue();
973 return Value >= 0 && Value < 256;
975 bool isImm0_4095() const {
976 if (!isImm()) return false;
977 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
978 if (!CE) return false;
979 int64_t Value = CE->getValue();
980 return Value >= 0 && Value < 4096;
982 bool isImm0_4095Neg() const {
983 if (!isImm()) return false;
984 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
985 if (!CE) return false;
986 int64_t Value = -CE->getValue();
987 return Value > 0 && Value < 4096;
989 bool isImm0_1() const {
990 if (!isImm()) return false;
991 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
992 if (!CE) return false;
993 int64_t Value = CE->getValue();
994 return Value >= 0 && Value < 2;
996 bool isImm0_3() const {
997 if (!isImm()) return false;
998 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
999 if (!CE) return false;
1000 int64_t Value = CE->getValue();
1001 return Value >= 0 && Value < 4;
1003 bool isImm0_7() const {
1004 if (!isImm()) return false;
1005 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
1006 if (!CE) return false;
1007 int64_t Value = CE->getValue();
1008 return Value >= 0 && Value < 8;
1010 bool isImm0_15() const {
1011 if (!isImm()) return false;
1012 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
1013 if (!CE) return false;
1014 int64_t Value = CE->getValue();
1015 return Value >= 0 && Value < 16;
1017 bool isImm0_31() const {
1018 if (!isImm()) return false;
1019 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
1020 if (!CE) return false;
1021 int64_t Value = CE->getValue();
1022 return Value >= 0 && Value < 32;
1024 bool isImm0_63() const {
1025 if (!isImm()) return false;
1026 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
1027 if (!CE) return false;
1028 int64_t Value = CE->getValue();
1029 return Value >= 0 && Value < 64;
1031 bool isImm8() const {
1032 if (!isImm()) return false;
1033 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
1034 if (!CE) return false;
1035 int64_t Value = CE->getValue();
1038 bool isImm16() const {
1039 if (!isImm()) return false;
1040 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
1041 if (!CE) return false;
1042 int64_t Value = CE->getValue();
1045 bool isImm32() const {
1046 if (!isImm()) return false;
1047 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
1048 if (!CE) return false;
1049 int64_t Value = CE->getValue();
1052 bool isShrImm8() const {
1053 if (!isImm()) return false;
1054 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
1055 if (!CE) return false;
1056 int64_t Value = CE->getValue();
1057 return Value > 0 && Value <= 8;
1059 bool isShrImm16() const {
1060 if (!isImm()) return false;
1061 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
1062 if (!CE) return false;
1063 int64_t Value = CE->getValue();
1064 return Value > 0 && Value <= 16;
1066 bool isShrImm32() const {
1067 if (!isImm()) return false;
1068 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
1069 if (!CE) return false;
1070 int64_t Value = CE->getValue();
1071 return Value > 0 && Value <= 32;
1073 bool isShrImm64() const {
1074 if (!isImm()) return false;
1075 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
1076 if (!CE) return false;
1077 int64_t Value = CE->getValue();
1078 return Value > 0 && Value <= 64;
1080 bool isImm1_7() const {
1081 if (!isImm()) return false;
1082 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
1083 if (!CE) return false;
1084 int64_t Value = CE->getValue();
1085 return Value > 0 && Value < 8;
1087 bool isImm1_15() const {
1088 if (!isImm()) return false;
1089 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
1090 if (!CE) return false;
1091 int64_t Value = CE->getValue();
1092 return Value > 0 && Value < 16;
1094 bool isImm1_31() const {
1095 if (!isImm()) return false;
1096 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
1097 if (!CE) return false;
1098 int64_t Value = CE->getValue();
1099 return Value > 0 && Value < 32;
1101 bool isImm1_16() const {
1102 if (!isImm()) return false;
1103 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
1104 if (!CE) return false;
1105 int64_t Value = CE->getValue();
1106 return Value > 0 && Value < 17;
1108 bool isImm1_32() const {
1109 if (!isImm()) return false;
1110 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
1111 if (!CE) return false;
1112 int64_t Value = CE->getValue();
1113 return Value > 0 && Value < 33;
1115 bool isImm0_32() const {
1116 if (!isImm()) return false;
1117 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
1118 if (!CE) return false;
1119 int64_t Value = CE->getValue();
1120 return Value >= 0 && Value < 33;
1122 bool isImm0_65535() const {
1123 if (!isImm()) return false;
1124 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
1125 if (!CE) return false;
1126 int64_t Value = CE->getValue();
1127 return Value >= 0 && Value < 65536;
1129 bool isImm256_65535Expr() const {
1130 if (!isImm()) return false;
1131 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
1132 // If it's not a constant expression, it'll generate a fixup and be
1134 if (!CE) return true;
1135 int64_t Value = CE->getValue();
1136 return Value >= 256 && Value < 65536;
1138 bool isImm0_65535Expr() const {
1139 if (!isImm()) return false;
1140 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
1141 // If it's not a constant expression, it'll generate a fixup and be
1143 if (!CE) return true;
1144 int64_t Value = CE->getValue();
1145 return Value >= 0 && Value < 65536;
1147 bool isImm24bit() const {
1148 if (!isImm()) return false;
1149 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
1150 if (!CE) return false;
1151 int64_t Value = CE->getValue();
1152 return Value >= 0 && Value <= 0xffffff;
1154 bool isImmThumbSR() const {
1155 if (!isImm()) return false;
1156 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
1157 if (!CE) return false;
1158 int64_t Value = CE->getValue();
1159 return Value > 0 && Value < 33;
1161 bool isPKHLSLImm() const {
1162 if (!isImm()) return false;
1163 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
1164 if (!CE) return false;
1165 int64_t Value = CE->getValue();
1166 return Value >= 0 && Value < 32;
1168 bool isPKHASRImm() const {
1169 if (!isImm()) return false;
1170 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
1171 if (!CE) return false;
1172 int64_t Value = CE->getValue();
1173 return Value > 0 && Value <= 32;
1175 bool isAdrLabel() const {
1176 // If we have an immediate that's not a constant, treat it as a label
1177 // reference needing a fixup.
1178 if (isImm() && !isa<MCConstantExpr>(getImm()))
1181 // If it is a constant, it must fit into a modified immediate encoding.
1182 if (!isImm()) return false;
1183 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
1184 if (!CE) return false;
1185 int64_t Value = CE->getValue();
1186 return (ARM_AM::getSOImmVal(Value) != -1 ||
1187 ARM_AM::getSOImmVal(-Value) != -1);
1189 bool isT2SOImm() const {
1190 if (!isImm()) return false;
1191 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
1192 if (!CE) return false;
1193 int64_t Value = CE->getValue();
1194 return ARM_AM::getT2SOImmVal(Value) != -1;
1196 bool isT2SOImmNot() const {
1197 if (!isImm()) return false;
1198 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
1199 if (!CE) return false;
1200 int64_t Value = CE->getValue();
1201 return ARM_AM::getT2SOImmVal(Value) == -1 &&
1202 ARM_AM::getT2SOImmVal(~Value) != -1;
1204 bool isT2SOImmNeg() const {
1205 if (!isImm()) return false;
1206 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
1207 if (!CE) return false;
1208 int64_t Value = CE->getValue();
1209 // Only use this when not representable as a plain so_imm.
1210 return ARM_AM::getT2SOImmVal(Value) == -1 &&
1211 ARM_AM::getT2SOImmVal(-Value) != -1;
1213 bool isSetEndImm() const {
1214 if (!isImm()) return false;
1215 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
1216 if (!CE) return false;
1217 int64_t Value = CE->getValue();
1218 return Value == 1 || Value == 0;
1220 bool isReg() const override { return Kind == k_Register; }
1221 bool isRegList() const { return Kind == k_RegisterList; }
1222 bool isDPRRegList() const { return Kind == k_DPRRegisterList; }
1223 bool isSPRRegList() const { return Kind == k_SPRRegisterList; }
1224 bool isToken() const override { return Kind == k_Token; }
1225 bool isMemBarrierOpt() const { return Kind == k_MemBarrierOpt; }
1226 bool isInstSyncBarrierOpt() const { return Kind == k_InstSyncBarrierOpt; }
1227 bool isMem() const override { return Kind == k_Memory; }
1228 bool isShifterImm() const { return Kind == k_ShifterImmediate; }
1229 bool isRegShiftedReg() const { return Kind == k_ShiftedRegister; }
1230 bool isRegShiftedImm() const { return Kind == k_ShiftedImmediate; }
1231 bool isRotImm() const { return Kind == k_RotateImmediate; }
1232 bool isModImm() const { return Kind == k_ModifiedImmediate; }
1233 bool isModImmNot() const {
1234 if (!isImm()) return false;
1235 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
1236 if (!CE) return false;
1237 int64_t Value = CE->getValue();
1238 return ARM_AM::getSOImmVal(~Value) != -1;
1240 bool isModImmNeg() const {
1241 if (!isImm()) return false;
1242 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
1243 if (!CE) return false;
1244 int64_t Value = CE->getValue();
1245 return ARM_AM::getSOImmVal(Value) == -1 &&
1246 ARM_AM::getSOImmVal(-Value) != -1;
1248 bool isConstantPoolImm() const { return Kind == k_ConstantPoolImmediate; }
1249 bool isBitfield() const { return Kind == k_BitfieldDescriptor; }
1250 bool isPostIdxRegShifted() const { return Kind == k_PostIndexRegister; }
1251 bool isPostIdxReg() const {
1252 return Kind == k_PostIndexRegister && PostIdxReg.ShiftTy ==ARM_AM::no_shift;
1254 bool isMemNoOffset(bool alignOK = false, unsigned Alignment = 0) const {
1257 // No offset of any kind.
1258 return Memory.OffsetRegNum == 0 && Memory.OffsetImm == nullptr &&
1259 (alignOK || Memory.Alignment == Alignment);
1261 bool isMemPCRelImm12() const {
1262 if (!isMem() || Memory.OffsetRegNum != 0 || Memory.Alignment != 0)
1264 // Base register must be PC.
1265 if (Memory.BaseRegNum != ARM::PC)
1267 // Immediate offset in range [-4095, 4095].
1268 if (!Memory.OffsetImm) return true;
1269 int64_t Val = Memory.OffsetImm->getValue();
1270 return (Val > -4096 && Val < 4096) || (Val == INT32_MIN);
1272 bool isAlignedMemory() const {
1273 return isMemNoOffset(true);
1275 bool isAlignedMemoryNone() const {
1276 return isMemNoOffset(false, 0);
1278 bool isDupAlignedMemoryNone() const {
1279 return isMemNoOffset(false, 0);
1281 bool isAlignedMemory16() const {
1282 if (isMemNoOffset(false, 2)) // alignment in bytes for 16-bits is 2.
1284 return isMemNoOffset(false, 0);
1286 bool isDupAlignedMemory16() const {
1287 if (isMemNoOffset(false, 2)) // alignment in bytes for 16-bits is 2.
1289 return isMemNoOffset(false, 0);
1291 bool isAlignedMemory32() const {
1292 if (isMemNoOffset(false, 4)) // alignment in bytes for 32-bits is 4.
1294 return isMemNoOffset(false, 0);
1296 bool isDupAlignedMemory32() const {
1297 if (isMemNoOffset(false, 4)) // alignment in bytes for 32-bits is 4.
1299 return isMemNoOffset(false, 0);
1301 bool isAlignedMemory64() const {
1302 if (isMemNoOffset(false, 8)) // alignment in bytes for 64-bits is 8.
1304 return isMemNoOffset(false, 0);
1306 bool isDupAlignedMemory64() const {
1307 if (isMemNoOffset(false, 8)) // alignment in bytes for 64-bits is 8.
1309 return isMemNoOffset(false, 0);
1311 bool isAlignedMemory64or128() const {
1312 if (isMemNoOffset(false, 8)) // alignment in bytes for 64-bits is 8.
1314 if (isMemNoOffset(false, 16)) // alignment in bytes for 128-bits is 16.
1316 return isMemNoOffset(false, 0);
1318 bool isDupAlignedMemory64or128() const {
1319 if (isMemNoOffset(false, 8)) // alignment in bytes for 64-bits is 8.
1321 if (isMemNoOffset(false, 16)) // alignment in bytes for 128-bits is 16.
1323 return isMemNoOffset(false, 0);
1325 bool isAlignedMemory64or128or256() const {
1326 if (isMemNoOffset(false, 8)) // alignment in bytes for 64-bits is 8.
1328 if (isMemNoOffset(false, 16)) // alignment in bytes for 128-bits is 16.
1330 if (isMemNoOffset(false, 32)) // alignment in bytes for 256-bits is 32.
1332 return isMemNoOffset(false, 0);
1334 bool isAddrMode2() const {
1335 if (!isMem() || Memory.Alignment != 0) return false;
1336 // Check for register offset.
1337 if (Memory.OffsetRegNum) return true;
1338 // Immediate offset in range [-4095, 4095].
1339 if (!Memory.OffsetImm) return true;
1340 int64_t Val = Memory.OffsetImm->getValue();
1341 return Val > -4096 && Val < 4096;
1343 bool isAM2OffsetImm() const {
1344 if (!isImm()) return false;
1345 // Immediate offset in range [-4095, 4095].
1346 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
1347 if (!CE) return false;
1348 int64_t Val = CE->getValue();
1349 return (Val == INT32_MIN) || (Val > -4096 && Val < 4096);
1351 bool isAddrMode3() const {
1352 // If we have an immediate that's not a constant, treat it as a label
1353 // reference needing a fixup. If it is a constant, it's something else
1354 // and we reject it.
1355 if (isImm() && !isa<MCConstantExpr>(getImm()))
1357 if (!isMem() || Memory.Alignment != 0) return false;
1358 // No shifts are legal for AM3.
1359 if (Memory.ShiftType != ARM_AM::no_shift) return false;
1360 // Check for register offset.
1361 if (Memory.OffsetRegNum) return true;
1362 // Immediate offset in range [-255, 255].
1363 if (!Memory.OffsetImm) return true;
1364 int64_t Val = Memory.OffsetImm->getValue();
1365 // The #-0 offset is encoded as INT32_MIN, and we have to check
1367 return (Val > -256 && Val < 256) || Val == INT32_MIN;
1369 bool isAM3Offset() const {
1370 if (Kind != k_Immediate && Kind != k_PostIndexRegister)
1372 if (Kind == k_PostIndexRegister)
1373 return PostIdxReg.ShiftTy == ARM_AM::no_shift;
1374 // Immediate offset in range [-255, 255].
1375 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
1376 if (!CE) return false;
1377 int64_t Val = CE->getValue();
1378 // Special case, #-0 is INT32_MIN.
1379 return (Val > -256 && Val < 256) || Val == INT32_MIN;
1381 bool isAddrMode5() const {
1382 // If we have an immediate that's not a constant, treat it as a label
1383 // reference needing a fixup. If it is a constant, it's something else
1384 // and we reject it.
1385 if (isImm() && !isa<MCConstantExpr>(getImm()))
1387 if (!isMem() || Memory.Alignment != 0) return false;
1388 // Check for register offset.
1389 if (Memory.OffsetRegNum) return false;
1390 // Immediate offset in range [-1020, 1020] and a multiple of 4.
1391 if (!Memory.OffsetImm) return true;
1392 int64_t Val = Memory.OffsetImm->getValue();
1393 return (Val >= -1020 && Val <= 1020 && ((Val & 3) == 0)) ||
1396 bool isAddrMode5FP16() const {
1397 // If we have an immediate that's not a constant, treat it as a label
1398 // reference needing a fixup. If it is a constant, it's something else
1399 // and we reject it.
1400 if (isImm() && !isa<MCConstantExpr>(getImm()))
1402 if (!isMem() || Memory.Alignment != 0) return false;
1403 // Check for register offset.
1404 if (Memory.OffsetRegNum) return false;
1405 // Immediate offset in range [-510, 510] and a multiple of 2.
1406 if (!Memory.OffsetImm) return true;
1407 int64_t Val = Memory.OffsetImm->getValue();
1408 return (Val >= -510 && Val <= 510 && ((Val & 1) == 0)) || Val == INT32_MIN;
1410 bool isMemTBB() const {
1411 if (!isMem() || !Memory.OffsetRegNum || Memory.isNegative ||
1412 Memory.ShiftType != ARM_AM::no_shift || Memory.Alignment != 0)
1416 bool isMemTBH() const {
1417 if (!isMem() || !Memory.OffsetRegNum || Memory.isNegative ||
1418 Memory.ShiftType != ARM_AM::lsl || Memory.ShiftImm != 1 ||
1419 Memory.Alignment != 0 )
1423 bool isMemRegOffset() const {
1424 if (!isMem() || !Memory.OffsetRegNum || Memory.Alignment != 0)
1428 bool isT2MemRegOffset() const {
1429 if (!isMem() || !Memory.OffsetRegNum || Memory.isNegative ||
1430 Memory.Alignment != 0 || Memory.BaseRegNum == ARM::PC)
1432 // Only lsl #{0, 1, 2, 3} allowed.
1433 if (Memory.ShiftType == ARM_AM::no_shift)
1435 if (Memory.ShiftType != ARM_AM::lsl || Memory.ShiftImm > 3)
1439 bool isMemThumbRR() const {
1440 // Thumb reg+reg addressing is simple. Just two registers, a base and
1441 // an offset. No shifts, negations or any other complicating factors.
1442 if (!isMem() || !Memory.OffsetRegNum || Memory.isNegative ||
1443 Memory.ShiftType != ARM_AM::no_shift || Memory.Alignment != 0)
1445 return isARMLowRegister(Memory.BaseRegNum) &&
1446 (!Memory.OffsetRegNum || isARMLowRegister(Memory.OffsetRegNum));
1448 bool isMemThumbRIs4() const {
1449 if (!isMem() || Memory.OffsetRegNum != 0 ||
1450 !isARMLowRegister(Memory.BaseRegNum) || Memory.Alignment != 0)
1452 // Immediate offset, multiple of 4 in range [0, 124].
1453 if (!Memory.OffsetImm) return true;
1454 int64_t Val = Memory.OffsetImm->getValue();
1455 return Val >= 0 && Val <= 124 && (Val % 4) == 0;
1457 bool isMemThumbRIs2() const {
1458 if (!isMem() || Memory.OffsetRegNum != 0 ||
1459 !isARMLowRegister(Memory.BaseRegNum) || Memory.Alignment != 0)
1461 // Immediate offset, multiple of 4 in range [0, 62].
1462 if (!Memory.OffsetImm) return true;
1463 int64_t Val = Memory.OffsetImm->getValue();
1464 return Val >= 0 && Val <= 62 && (Val % 2) == 0;
1466 bool isMemThumbRIs1() const {
1467 if (!isMem() || Memory.OffsetRegNum != 0 ||
1468 !isARMLowRegister(Memory.BaseRegNum) || Memory.Alignment != 0)
1470 // Immediate offset in range [0, 31].
1471 if (!Memory.OffsetImm) return true;
1472 int64_t Val = Memory.OffsetImm->getValue();
1473 return Val >= 0 && Val <= 31;
1475 bool isMemThumbSPI() const {
1476 if (!isMem() || Memory.OffsetRegNum != 0 ||
1477 Memory.BaseRegNum != ARM::SP || Memory.Alignment != 0)
1479 // Immediate offset, multiple of 4 in range [0, 1020].
1480 if (!Memory.OffsetImm) return true;
1481 int64_t Val = Memory.OffsetImm->getValue();
1482 return Val >= 0 && Val <= 1020 && (Val % 4) == 0;
1484 bool isMemImm8s4Offset() const {
1485 // If we have an immediate that's not a constant, treat it as a label
1486 // reference needing a fixup. If it is a constant, it's something else
1487 // and we reject it.
1488 if (isImm() && !isa<MCConstantExpr>(getImm()))
1490 if (!isMem() || Memory.OffsetRegNum != 0 || Memory.Alignment != 0)
1492 // Immediate offset a multiple of 4 in range [-1020, 1020].
1493 if (!Memory.OffsetImm) return true;
1494 int64_t Val = Memory.OffsetImm->getValue();
1495 // Special case, #-0 is INT32_MIN.
1496 return (Val >= -1020 && Val <= 1020 && (Val & 3) == 0) || Val == INT32_MIN;
1498 bool isMemImm0_1020s4Offset() const {
1499 if (!isMem() || Memory.OffsetRegNum != 0 || Memory.Alignment != 0)
1501 // Immediate offset a multiple of 4 in range [0, 1020].
1502 if (!Memory.OffsetImm) return true;
1503 int64_t Val = Memory.OffsetImm->getValue();
1504 return Val >= 0 && Val <= 1020 && (Val & 3) == 0;
1506 bool isMemImm8Offset() const {
1507 if (!isMem() || Memory.OffsetRegNum != 0 || Memory.Alignment != 0)
1509 // Base reg of PC isn't allowed for these encodings.
1510 if (Memory.BaseRegNum == ARM::PC) return false;
1511 // Immediate offset in range [-255, 255].
1512 if (!Memory.OffsetImm) return true;
1513 int64_t Val = Memory.OffsetImm->getValue();
1514 return (Val == INT32_MIN) || (Val > -256 && Val < 256);
1516 bool isMemPosImm8Offset() const {
1517 if (!isMem() || Memory.OffsetRegNum != 0 || Memory.Alignment != 0)
1519 // Immediate offset in range [0, 255].
1520 if (!Memory.OffsetImm) return true;
1521 int64_t Val = Memory.OffsetImm->getValue();
1522 return Val >= 0 && Val < 256;
1524 bool isMemNegImm8Offset() const {
1525 if (!isMem() || Memory.OffsetRegNum != 0 || Memory.Alignment != 0)
1527 // Base reg of PC isn't allowed for these encodings.
1528 if (Memory.BaseRegNum == ARM::PC) return false;
1529 // Immediate offset in range [-255, -1].
1530 if (!Memory.OffsetImm) return false;
1531 int64_t Val = Memory.OffsetImm->getValue();
1532 return (Val == INT32_MIN) || (Val > -256 && Val < 0);
1534 bool isMemUImm12Offset() const {
1535 if (!isMem() || Memory.OffsetRegNum != 0 || Memory.Alignment != 0)
1537 // Immediate offset in range [0, 4095].
1538 if (!Memory.OffsetImm) return true;
1539 int64_t Val = Memory.OffsetImm->getValue();
1540 return (Val >= 0 && Val < 4096);
1542 bool isMemImm12Offset() const {
1543 // If we have an immediate that's not a constant, treat it as a label
1544 // reference needing a fixup. If it is a constant, it's something else
1545 // and we reject it.
1547 if (isImm() && !isa<MCConstantExpr>(getImm()))
1550 if (!isMem() || Memory.OffsetRegNum != 0 || Memory.Alignment != 0)
1552 // Immediate offset in range [-4095, 4095].
1553 if (!Memory.OffsetImm) return true;
1554 int64_t Val = Memory.OffsetImm->getValue();
1555 return (Val > -4096 && Val < 4096) || (Val == INT32_MIN);
1557 bool isConstPoolAsmImm() const {
1558 // Delay processing of Constant Pool Immediate, this will turn into
1559 // a constant. Match no other operand
1560 return (isConstantPoolImm());
1562 bool isPostIdxImm8() const {
1563 if (!isImm()) return false;
1564 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
1565 if (!CE) return false;
1566 int64_t Val = CE->getValue();
1567 return (Val > -256 && Val < 256) || (Val == INT32_MIN);
1569 bool isPostIdxImm8s4() const {
1570 if (!isImm()) return false;
1571 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
1572 if (!CE) return false;
1573 int64_t Val = CE->getValue();
1574 return ((Val & 3) == 0 && Val >= -1020 && Val <= 1020) ||
1578 bool isMSRMask() const { return Kind == k_MSRMask; }
1579 bool isBankedReg() const { return Kind == k_BankedReg; }
1580 bool isProcIFlags() const { return Kind == k_ProcIFlags; }
1583 bool isSingleSpacedVectorList() const {
1584 return Kind == k_VectorList && !VectorList.isDoubleSpaced;
1586 bool isDoubleSpacedVectorList() const {
1587 return Kind == k_VectorList && VectorList.isDoubleSpaced;
1589 bool isVecListOneD() const {
1590 if (!isSingleSpacedVectorList()) return false;
1591 return VectorList.Count == 1;
1594 bool isVecListDPair() const {
1595 if (!isSingleSpacedVectorList()) return false;
1596 return (ARMMCRegisterClasses[ARM::DPairRegClassID]
1597 .contains(VectorList.RegNum));
1600 bool isVecListThreeD() const {
1601 if (!isSingleSpacedVectorList()) return false;
1602 return VectorList.Count == 3;
1605 bool isVecListFourD() const {
1606 if (!isSingleSpacedVectorList()) return false;
1607 return VectorList.Count == 4;
1610 bool isVecListDPairSpaced() const {
1611 if (Kind != k_VectorList) return false;
1612 if (isSingleSpacedVectorList()) return false;
1613 return (ARMMCRegisterClasses[ARM::DPairSpcRegClassID]
1614 .contains(VectorList.RegNum));
1617 bool isVecListThreeQ() const {
1618 if (!isDoubleSpacedVectorList()) return false;
1619 return VectorList.Count == 3;
1622 bool isVecListFourQ() const {
1623 if (!isDoubleSpacedVectorList()) return false;
1624 return VectorList.Count == 4;
1627 bool isSingleSpacedVectorAllLanes() const {
1628 return Kind == k_VectorListAllLanes && !VectorList.isDoubleSpaced;
1630 bool isDoubleSpacedVectorAllLanes() const {
1631 return Kind == k_VectorListAllLanes && VectorList.isDoubleSpaced;
1633 bool isVecListOneDAllLanes() const {
1634 if (!isSingleSpacedVectorAllLanes()) return false;
1635 return VectorList.Count == 1;
1638 bool isVecListDPairAllLanes() const {
1639 if (!isSingleSpacedVectorAllLanes()) return false;
1640 return (ARMMCRegisterClasses[ARM::DPairRegClassID]
1641 .contains(VectorList.RegNum));
1644 bool isVecListDPairSpacedAllLanes() const {
1645 if (!isDoubleSpacedVectorAllLanes()) return false;
1646 return VectorList.Count == 2;
1649 bool isVecListThreeDAllLanes() const {
1650 if (!isSingleSpacedVectorAllLanes()) return false;
1651 return VectorList.Count == 3;
1654 bool isVecListThreeQAllLanes() const {
1655 if (!isDoubleSpacedVectorAllLanes()) return false;
1656 return VectorList.Count == 3;
1659 bool isVecListFourDAllLanes() const {
1660 if (!isSingleSpacedVectorAllLanes()) return false;
1661 return VectorList.Count == 4;
1664 bool isVecListFourQAllLanes() const {
1665 if (!isDoubleSpacedVectorAllLanes()) return false;
1666 return VectorList.Count == 4;
1669 bool isSingleSpacedVectorIndexed() const {
1670 return Kind == k_VectorListIndexed && !VectorList.isDoubleSpaced;
1672 bool isDoubleSpacedVectorIndexed() const {
1673 return Kind == k_VectorListIndexed && VectorList.isDoubleSpaced;
1675 bool isVecListOneDByteIndexed() const {
1676 if (!isSingleSpacedVectorIndexed()) return false;
1677 return VectorList.Count == 1 && VectorList.LaneIndex <= 7;
1680 bool isVecListOneDHWordIndexed() const {
1681 if (!isSingleSpacedVectorIndexed()) return false;
1682 return VectorList.Count == 1 && VectorList.LaneIndex <= 3;
1685 bool isVecListOneDWordIndexed() const {
1686 if (!isSingleSpacedVectorIndexed()) return false;
1687 return VectorList.Count == 1 && VectorList.LaneIndex <= 1;
1690 bool isVecListTwoDByteIndexed() const {
1691 if (!isSingleSpacedVectorIndexed()) return false;
1692 return VectorList.Count == 2 && VectorList.LaneIndex <= 7;
1695 bool isVecListTwoDHWordIndexed() const {
1696 if (!isSingleSpacedVectorIndexed()) return false;
1697 return VectorList.Count == 2 && VectorList.LaneIndex <= 3;
1700 bool isVecListTwoQWordIndexed() const {
1701 if (!isDoubleSpacedVectorIndexed()) return false;
1702 return VectorList.Count == 2 && VectorList.LaneIndex <= 1;
1705 bool isVecListTwoQHWordIndexed() const {
1706 if (!isDoubleSpacedVectorIndexed()) return false;
1707 return VectorList.Count == 2 && VectorList.LaneIndex <= 3;
1710 bool isVecListTwoDWordIndexed() const {
1711 if (!isSingleSpacedVectorIndexed()) return false;
1712 return VectorList.Count == 2 && VectorList.LaneIndex <= 1;
1715 bool isVecListThreeDByteIndexed() const {
1716 if (!isSingleSpacedVectorIndexed()) return false;
1717 return VectorList.Count == 3 && VectorList.LaneIndex <= 7;
1720 bool isVecListThreeDHWordIndexed() const {
1721 if (!isSingleSpacedVectorIndexed()) return false;
1722 return VectorList.Count == 3 && VectorList.LaneIndex <= 3;
1725 bool isVecListThreeQWordIndexed() const {
1726 if (!isDoubleSpacedVectorIndexed()) return false;
1727 return VectorList.Count == 3 && VectorList.LaneIndex <= 1;
1730 bool isVecListThreeQHWordIndexed() const {
1731 if (!isDoubleSpacedVectorIndexed()) return false;
1732 return VectorList.Count == 3 && VectorList.LaneIndex <= 3;
1735 bool isVecListThreeDWordIndexed() const {
1736 if (!isSingleSpacedVectorIndexed()) return false;
1737 return VectorList.Count == 3 && VectorList.LaneIndex <= 1;
1740 bool isVecListFourDByteIndexed() const {
1741 if (!isSingleSpacedVectorIndexed()) return false;
1742 return VectorList.Count == 4 && VectorList.LaneIndex <= 7;
1745 bool isVecListFourDHWordIndexed() const {
1746 if (!isSingleSpacedVectorIndexed()) return false;
1747 return VectorList.Count == 4 && VectorList.LaneIndex <= 3;
1750 bool isVecListFourQWordIndexed() const {
1751 if (!isDoubleSpacedVectorIndexed()) return false;
1752 return VectorList.Count == 4 && VectorList.LaneIndex <= 1;
1755 bool isVecListFourQHWordIndexed() const {
1756 if (!isDoubleSpacedVectorIndexed()) return false;
1757 return VectorList.Count == 4 && VectorList.LaneIndex <= 3;
1760 bool isVecListFourDWordIndexed() const {
1761 if (!isSingleSpacedVectorIndexed()) return false;
1762 return VectorList.Count == 4 && VectorList.LaneIndex <= 1;
1765 bool isVectorIndex8() const {
1766 if (Kind != k_VectorIndex) return false;
1767 return VectorIndex.Val < 8;
1769 bool isVectorIndex16() const {
1770 if (Kind != k_VectorIndex) return false;
1771 return VectorIndex.Val < 4;
1773 bool isVectorIndex32() const {
1774 if (Kind != k_VectorIndex) return false;
1775 return VectorIndex.Val < 2;
1778 bool isNEONi8splat() const {
1779 if (!isImm()) return false;
1780 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
1781 // Must be a constant.
1782 if (!CE) return false;
1783 int64_t Value = CE->getValue();
1784 // i8 value splatted across 8 bytes. The immediate is just the 8 byte
1786 return Value >= 0 && Value < 256;
1789 bool isNEONi16splat() const {
1790 if (isNEONByteReplicate(2))
1791 return false; // Leave that for bytes replication and forbid by default.
1794 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
1795 // Must be a constant.
1796 if (!CE) return false;
1797 unsigned Value = CE->getValue();
1798 return ARM_AM::isNEONi16splat(Value);
1801 bool isNEONi16splatNot() const {
1804 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
1805 // Must be a constant.
1806 if (!CE) return false;
1807 unsigned Value = CE->getValue();
1808 return ARM_AM::isNEONi16splat(~Value & 0xffff);
1811 bool isNEONi32splat() const {
1812 if (isNEONByteReplicate(4))
1813 return false; // Leave that for bytes replication and forbid by default.
1816 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
1817 // Must be a constant.
1818 if (!CE) return false;
1819 unsigned Value = CE->getValue();
1820 return ARM_AM::isNEONi32splat(Value);
1823 bool isNEONi32splatNot() const {
1826 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
1827 // Must be a constant.
1828 if (!CE) return false;
1829 unsigned Value = CE->getValue();
1830 return ARM_AM::isNEONi32splat(~Value);
1833 bool isNEONByteReplicate(unsigned NumBytes) const {
1836 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
1837 // Must be a constant.
1840 int64_t Value = CE->getValue();
1842 return false; // Don't bother with zero.
1844 unsigned char B = Value & 0xff;
1845 for (unsigned i = 1; i < NumBytes; ++i) {
1847 if ((Value & 0xff) != B)
1852 bool isNEONi16ByteReplicate() const { return isNEONByteReplicate(2); }
1853 bool isNEONi32ByteReplicate() const { return isNEONByteReplicate(4); }
1854 bool isNEONi32vmov() const {
1855 if (isNEONByteReplicate(4))
1856 return false; // Let it to be classified as byte-replicate case.
1859 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
1860 // Must be a constant.
1863 int64_t Value = CE->getValue();
1864 // i32 value with set bits only in one byte X000, 0X00, 00X0, or 000X,
1865 // for VMOV/VMVN only, 00Xf or 0Xff are also accepted.
1866 // FIXME: This is probably wrong and a copy and paste from previous example
1867 return (Value >= 0 && Value < 256) ||
1868 (Value >= 0x0100 && Value <= 0xff00) ||
1869 (Value >= 0x010000 && Value <= 0xff0000) ||
1870 (Value >= 0x01000000 && Value <= 0xff000000) ||
1871 (Value >= 0x01ff && Value <= 0xffff && (Value & 0xff) == 0xff) ||
1872 (Value >= 0x01ffff && Value <= 0xffffff && (Value & 0xffff) == 0xffff);
1874 bool isNEONi32vmovNeg() const {
1875 if (!isImm()) return false;
1876 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
1877 // Must be a constant.
1878 if (!CE) return false;
1879 int64_t Value = ~CE->getValue();
1880 // i32 value with set bits only in one byte X000, 0X00, 00X0, or 000X,
1881 // for VMOV/VMVN only, 00Xf or 0Xff are also accepted.
1882 // FIXME: This is probably wrong and a copy and paste from previous example
1883 return (Value >= 0 && Value < 256) ||
1884 (Value >= 0x0100 && Value <= 0xff00) ||
1885 (Value >= 0x010000 && Value <= 0xff0000) ||
1886 (Value >= 0x01000000 && Value <= 0xff000000) ||
1887 (Value >= 0x01ff && Value <= 0xffff && (Value & 0xff) == 0xff) ||
1888 (Value >= 0x01ffff && Value <= 0xffffff && (Value & 0xffff) == 0xffff);
1891 bool isNEONi64splat() const {
1892 if (!isImm()) return false;
1893 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
1894 // Must be a constant.
1895 if (!CE) return false;
1896 uint64_t Value = CE->getValue();
1897 // i64 value with each byte being either 0 or 0xff.
1898 for (unsigned i = 0; i < 8; ++i, Value >>= 8)
1899 if ((Value & 0xff) != 0 && (Value & 0xff) != 0xff) return false;
1903 void addExpr(MCInst &Inst, const MCExpr *Expr) const {
1904 // Add as immediates when possible. Null MCExpr = 0.
1906 Inst.addOperand(MCOperand::createImm(0));
1907 else if (const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(Expr))
1908 Inst.addOperand(MCOperand::createImm(CE->getValue()));
1910 Inst.addOperand(MCOperand::createExpr(Expr));
1913 void addARMBranchTargetOperands(MCInst &Inst, unsigned N) const {
1914 assert(N == 1 && "Invalid number of operands!");
1915 addExpr(Inst, getImm());
1918 void addThumbBranchTargetOperands(MCInst &Inst, unsigned N) const {
1919 assert(N == 1 && "Invalid number of operands!");
1920 addExpr(Inst, getImm());
1923 void addCondCodeOperands(MCInst &Inst, unsigned N) const {
1924 assert(N == 2 && "Invalid number of operands!");
1925 Inst.addOperand(MCOperand::createImm(unsigned(getCondCode())));
1926 unsigned RegNum = getCondCode() == ARMCC::AL ? 0: ARM::CPSR;
1927 Inst.addOperand(MCOperand::createReg(RegNum));
1930 void addCoprocNumOperands(MCInst &Inst, unsigned N) const {
1931 assert(N == 1 && "Invalid number of operands!");
1932 Inst.addOperand(MCOperand::createImm(getCoproc()));
1935 void addCoprocRegOperands(MCInst &Inst, unsigned N) const {
1936 assert(N == 1 && "Invalid number of operands!");
1937 Inst.addOperand(MCOperand::createImm(getCoproc()));
1940 void addCoprocOptionOperands(MCInst &Inst, unsigned N) const {
1941 assert(N == 1 && "Invalid number of operands!");
1942 Inst.addOperand(MCOperand::createImm(CoprocOption.Val));
1945 void addITMaskOperands(MCInst &Inst, unsigned N) const {
1946 assert(N == 1 && "Invalid number of operands!");
1947 Inst.addOperand(MCOperand::createImm(ITMask.Mask));
1950 void addITCondCodeOperands(MCInst &Inst, unsigned N) const {
1951 assert(N == 1 && "Invalid number of operands!");
1952 Inst.addOperand(MCOperand::createImm(unsigned(getCondCode())));
1955 void addCCOutOperands(MCInst &Inst, unsigned N) const {
1956 assert(N == 1 && "Invalid number of operands!");
1957 Inst.addOperand(MCOperand::createReg(getReg()));
1960 void addRegOperands(MCInst &Inst, unsigned N) const {
1961 assert(N == 1 && "Invalid number of operands!");
1962 Inst.addOperand(MCOperand::createReg(getReg()));
1965 void addRegShiftedRegOperands(MCInst &Inst, unsigned N) const {
1966 assert(N == 3 && "Invalid number of operands!");
1967 assert(isRegShiftedReg() &&
1968 "addRegShiftedRegOperands() on non-RegShiftedReg!");
1969 Inst.addOperand(MCOperand::createReg(RegShiftedReg.SrcReg));
1970 Inst.addOperand(MCOperand::createReg(RegShiftedReg.ShiftReg));
1971 Inst.addOperand(MCOperand::createImm(
1972 ARM_AM::getSORegOpc(RegShiftedReg.ShiftTy, RegShiftedReg.ShiftImm)));
1975 void addRegShiftedImmOperands(MCInst &Inst, unsigned N) const {
1976 assert(N == 2 && "Invalid number of operands!");
1977 assert(isRegShiftedImm() &&
1978 "addRegShiftedImmOperands() on non-RegShiftedImm!");
1979 Inst.addOperand(MCOperand::createReg(RegShiftedImm.SrcReg));
1980 // Shift of #32 is encoded as 0 where permitted
1981 unsigned Imm = (RegShiftedImm.ShiftImm == 32 ? 0 : RegShiftedImm.ShiftImm);
1982 Inst.addOperand(MCOperand::createImm(
1983 ARM_AM::getSORegOpc(RegShiftedImm.ShiftTy, Imm)));
1986 void addShifterImmOperands(MCInst &Inst, unsigned N) const {
1987 assert(N == 1 && "Invalid number of operands!");
1988 Inst.addOperand(MCOperand::createImm((ShifterImm.isASR << 5) |
1992 void addRegListOperands(MCInst &Inst, unsigned N) const {
1993 assert(N == 1 && "Invalid number of operands!");
1994 const SmallVectorImpl<unsigned> &RegList = getRegList();
1995 for (SmallVectorImpl<unsigned>::const_iterator
1996 I = RegList.begin(), E = RegList.end(); I != E; ++I)
1997 Inst.addOperand(MCOperand::createReg(*I));
2000 void addDPRRegListOperands(MCInst &Inst, unsigned N) const {
2001 addRegListOperands(Inst, N);
2004 void addSPRRegListOperands(MCInst &Inst, unsigned N) const {
2005 addRegListOperands(Inst, N);
2008 void addRotImmOperands(MCInst &Inst, unsigned N) const {
2009 assert(N == 1 && "Invalid number of operands!");
2010 // Encoded as val>>3. The printer handles display as 8, 16, 24.
2011 Inst.addOperand(MCOperand::createImm(RotImm.Imm >> 3));
2014 void addModImmOperands(MCInst &Inst, unsigned N) const {
2015 assert(N == 1 && "Invalid number of operands!");
2017 // Support for fixups (MCFixup)
2019 return addImmOperands(Inst, N);
2021 Inst.addOperand(MCOperand::createImm(ModImm.Bits | (ModImm.Rot << 7)));
2024 void addModImmNotOperands(MCInst &Inst, unsigned N) const {
2025 assert(N == 1 && "Invalid number of operands!");
2026 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
2027 uint32_t Enc = ARM_AM::getSOImmVal(~CE->getValue());
2028 Inst.addOperand(MCOperand::createImm(Enc));
2031 void addModImmNegOperands(MCInst &Inst, unsigned N) const {
2032 assert(N == 1 && "Invalid number of operands!");
2033 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
2034 uint32_t Enc = ARM_AM::getSOImmVal(-CE->getValue());
2035 Inst.addOperand(MCOperand::createImm(Enc));
2038 void addBitfieldOperands(MCInst &Inst, unsigned N) const {
2039 assert(N == 1 && "Invalid number of operands!");
2040 // Munge the lsb/width into a bitfield mask.
2041 unsigned lsb = Bitfield.LSB;
2042 unsigned width = Bitfield.Width;
2043 // Make a 32-bit mask w/ the referenced bits clear and all other bits set.
2044 uint32_t Mask = ~(((uint32_t)0xffffffff >> lsb) << (32 - width) >>
2045 (32 - (lsb + width)));
2046 Inst.addOperand(MCOperand::createImm(Mask));
2049 void addImmOperands(MCInst &Inst, unsigned N) const {
2050 assert(N == 1 && "Invalid number of operands!");
2051 addExpr(Inst, getImm());
2054 void addFBits16Operands(MCInst &Inst, unsigned N) const {
2055 assert(N == 1 && "Invalid number of operands!");
2056 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
2057 Inst.addOperand(MCOperand::createImm(16 - CE->getValue()));
2060 void addFBits32Operands(MCInst &Inst, unsigned N) const {
2061 assert(N == 1 && "Invalid number of operands!");
2062 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
2063 Inst.addOperand(MCOperand::createImm(32 - CE->getValue()));
2066 void addFPImmOperands(MCInst &Inst, unsigned N) const {
2067 assert(N == 1 && "Invalid number of operands!");
2068 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
2069 int Val = ARM_AM::getFP32Imm(APInt(32, CE->getValue()));
2070 Inst.addOperand(MCOperand::createImm(Val));
2073 void addImm8s4Operands(MCInst &Inst, unsigned N) const {
2074 assert(N == 1 && "Invalid number of operands!");
2075 // FIXME: We really want to scale the value here, but the LDRD/STRD
2076 // instruction don't encode operands that way yet.
2077 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
2078 Inst.addOperand(MCOperand::createImm(CE->getValue()));
2081 void addImm0_1020s4Operands(MCInst &Inst, unsigned N) const {
2082 assert(N == 1 && "Invalid number of operands!");
2083 // The immediate is scaled by four in the encoding and is stored
2084 // in the MCInst as such. Lop off the low two bits here.
2085 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
2086 Inst.addOperand(MCOperand::createImm(CE->getValue() / 4));
2089 void addImm0_508s4NegOperands(MCInst &Inst, unsigned N) const {
2090 assert(N == 1 && "Invalid number of operands!");
2091 // The immediate is scaled by four in the encoding and is stored
2092 // in the MCInst as such. Lop off the low two bits here.
2093 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
2094 Inst.addOperand(MCOperand::createImm(-(CE->getValue() / 4)));
2097 void addImm0_508s4Operands(MCInst &Inst, unsigned N) const {
2098 assert(N == 1 && "Invalid number of operands!");
2099 // The immediate is scaled by four in the encoding and is stored
2100 // in the MCInst as such. Lop off the low two bits here.
2101 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
2102 Inst.addOperand(MCOperand::createImm(CE->getValue() / 4));
2105 void addImm1_16Operands(MCInst &Inst, unsigned N) const {
2106 assert(N == 1 && "Invalid number of operands!");
2107 // The constant encodes as the immediate-1, and we store in the instruction
2108 // the bits as encoded, so subtract off one here.
2109 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
2110 Inst.addOperand(MCOperand::createImm(CE->getValue() - 1));
2113 void addImm1_32Operands(MCInst &Inst, unsigned N) const {
2114 assert(N == 1 && "Invalid number of operands!");
2115 // The constant encodes as the immediate-1, and we store in the instruction
2116 // the bits as encoded, so subtract off one here.
2117 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
2118 Inst.addOperand(MCOperand::createImm(CE->getValue() - 1));
2121 void addImmThumbSROperands(MCInst &Inst, unsigned N) const {
2122 assert(N == 1 && "Invalid number of operands!");
2123 // The constant encodes as the immediate, except for 32, which encodes as
2125 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
2126 unsigned Imm = CE->getValue();
2127 Inst.addOperand(MCOperand::createImm((Imm == 32 ? 0 : Imm)));
2130 void addPKHASRImmOperands(MCInst &Inst, unsigned N) const {
2131 assert(N == 1 && "Invalid number of operands!");
2132 // An ASR value of 32 encodes as 0, so that's how we want to add it to
2133 // the instruction as well.
2134 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
2135 int Val = CE->getValue();
2136 Inst.addOperand(MCOperand::createImm(Val == 32 ? 0 : Val));
2139 void addT2SOImmNotOperands(MCInst &Inst, unsigned N) const {
2140 assert(N == 1 && "Invalid number of operands!");
2141 // The operand is actually a t2_so_imm, but we have its bitwise
2142 // negation in the assembly source, so twiddle it here.
2143 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
2144 Inst.addOperand(MCOperand::createImm(~CE->getValue()));
2147 void addT2SOImmNegOperands(MCInst &Inst, unsigned N) const {
2148 assert(N == 1 && "Invalid number of operands!");
2149 // The operand is actually a t2_so_imm, but we have its
2150 // negation in the assembly source, so twiddle it here.
2151 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
2152 Inst.addOperand(MCOperand::createImm(-CE->getValue()));
2155 void addImm0_4095NegOperands(MCInst &Inst, unsigned N) const {
2156 assert(N == 1 && "Invalid number of operands!");
2157 // The operand is actually an imm0_4095, but we have its
2158 // negation in the assembly source, so twiddle it here.
2159 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
2160 Inst.addOperand(MCOperand::createImm(-CE->getValue()));
2163 void addUnsignedOffset_b8s2Operands(MCInst &Inst, unsigned N) const {
2164 if(const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm())) {
2165 Inst.addOperand(MCOperand::createImm(CE->getValue() >> 2));
2169 const MCSymbolRefExpr *SR = dyn_cast<MCSymbolRefExpr>(Imm.Val);
2170 assert(SR && "Unknown value type!");
2171 Inst.addOperand(MCOperand::createExpr(SR));
2174 void addThumbMemPCOperands(MCInst &Inst, unsigned N) const {
2175 assert(N == 1 && "Invalid number of operands!");
2177 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
2179 Inst.addOperand(MCOperand::createImm(CE->getValue()));
2183 const MCSymbolRefExpr *SR = dyn_cast<MCSymbolRefExpr>(Imm.Val);
2185 assert(SR && "Unknown value type!");
2186 Inst.addOperand(MCOperand::createExpr(SR));
2190 assert(isMem() && "Unknown value type!");
2191 assert(isa<MCConstantExpr>(Memory.OffsetImm) && "Unknown value type!");
2192 Inst.addOperand(MCOperand::createImm(Memory.OffsetImm->getValue()));
2195 void addMemBarrierOptOperands(MCInst &Inst, unsigned N) const {
2196 assert(N == 1 && "Invalid number of operands!");
2197 Inst.addOperand(MCOperand::createImm(unsigned(getMemBarrierOpt())));
2200 void addInstSyncBarrierOptOperands(MCInst &Inst, unsigned N) const {
2201 assert(N == 1 && "Invalid number of operands!");
2202 Inst.addOperand(MCOperand::createImm(unsigned(getInstSyncBarrierOpt())));
2205 void addMemNoOffsetOperands(MCInst &Inst, unsigned N) const {
2206 assert(N == 1 && "Invalid number of operands!");
2207 Inst.addOperand(MCOperand::createReg(Memory.BaseRegNum));
2210 void addMemPCRelImm12Operands(MCInst &Inst, unsigned N) const {
2211 assert(N == 1 && "Invalid number of operands!");
2212 int32_t Imm = Memory.OffsetImm->getValue();
2213 Inst.addOperand(MCOperand::createImm(Imm));
2216 void addAdrLabelOperands(MCInst &Inst, unsigned N) const {
2217 assert(N == 1 && "Invalid number of operands!");
2218 assert(isImm() && "Not an immediate!");
2220 // If we have an immediate that's not a constant, treat it as a label
2221 // reference needing a fixup.
2222 if (!isa<MCConstantExpr>(getImm())) {
2223 Inst.addOperand(MCOperand::createExpr(getImm()));
2227 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
2228 int Val = CE->getValue();
2229 Inst.addOperand(MCOperand::createImm(Val));
2232 void addAlignedMemoryOperands(MCInst &Inst, unsigned N) const {
2233 assert(N == 2 && "Invalid number of operands!");
2234 Inst.addOperand(MCOperand::createReg(Memory.BaseRegNum));
2235 Inst.addOperand(MCOperand::createImm(Memory.Alignment));
2238 void addDupAlignedMemoryNoneOperands(MCInst &Inst, unsigned N) const {
2239 addAlignedMemoryOperands(Inst, N);
2242 void addAlignedMemoryNoneOperands(MCInst &Inst, unsigned N) const {
2243 addAlignedMemoryOperands(Inst, N);
2246 void addAlignedMemory16Operands(MCInst &Inst, unsigned N) const {
2247 addAlignedMemoryOperands(Inst, N);
2250 void addDupAlignedMemory16Operands(MCInst &Inst, unsigned N) const {
2251 addAlignedMemoryOperands(Inst, N);
2254 void addAlignedMemory32Operands(MCInst &Inst, unsigned N) const {
2255 addAlignedMemoryOperands(Inst, N);
2258 void addDupAlignedMemory32Operands(MCInst &Inst, unsigned N) const {
2259 addAlignedMemoryOperands(Inst, N);
2262 void addAlignedMemory64Operands(MCInst &Inst, unsigned N) const {
2263 addAlignedMemoryOperands(Inst, N);
2266 void addDupAlignedMemory64Operands(MCInst &Inst, unsigned N) const {
2267 addAlignedMemoryOperands(Inst, N);
2270 void addAlignedMemory64or128Operands(MCInst &Inst, unsigned N) const {
2271 addAlignedMemoryOperands(Inst, N);
2274 void addDupAlignedMemory64or128Operands(MCInst &Inst, unsigned N) const {
2275 addAlignedMemoryOperands(Inst, N);
2278 void addAlignedMemory64or128or256Operands(MCInst &Inst, unsigned N) const {
2279 addAlignedMemoryOperands(Inst, N);
2282 void addAddrMode2Operands(MCInst &Inst, unsigned N) const {
2283 assert(N == 3 && "Invalid number of operands!");
2284 int32_t Val = Memory.OffsetImm ? Memory.OffsetImm->getValue() : 0;
2285 if (!Memory.OffsetRegNum) {
2286 ARM_AM::AddrOpc AddSub = Val < 0 ? ARM_AM::sub : ARM_AM::add;
2287 // Special case for #-0
2288 if (Val == INT32_MIN) Val = 0;
2289 if (Val < 0) Val = -Val;
2290 Val = ARM_AM::getAM2Opc(AddSub, Val, ARM_AM::no_shift);
2292 // For register offset, we encode the shift type and negation flag
2294 Val = ARM_AM::getAM2Opc(Memory.isNegative ? ARM_AM::sub : ARM_AM::add,
2295 Memory.ShiftImm, Memory.ShiftType);
2297 Inst.addOperand(MCOperand::createReg(Memory.BaseRegNum));
2298 Inst.addOperand(MCOperand::createReg(Memory.OffsetRegNum));
2299 Inst.addOperand(MCOperand::createImm(Val));
2302 void addAM2OffsetImmOperands(MCInst &Inst, unsigned N) const {
2303 assert(N == 2 && "Invalid number of operands!");
2304 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
2305 assert(CE && "non-constant AM2OffsetImm operand!");
2306 int32_t Val = CE->getValue();
2307 ARM_AM::AddrOpc AddSub = Val < 0 ? ARM_AM::sub : ARM_AM::add;
2308 // Special case for #-0
2309 if (Val == INT32_MIN) Val = 0;
2310 if (Val < 0) Val = -Val;
2311 Val = ARM_AM::getAM2Opc(AddSub, Val, ARM_AM::no_shift);
2312 Inst.addOperand(MCOperand::createReg(0));
2313 Inst.addOperand(MCOperand::createImm(Val));
2316 void addAddrMode3Operands(MCInst &Inst, unsigned N) const {
2317 assert(N == 3 && "Invalid number of operands!");
2318 // If we have an immediate that's not a constant, treat it as a label
2319 // reference needing a fixup. If it is a constant, it's something else
2320 // and we reject it.
2322 Inst.addOperand(MCOperand::createExpr(getImm()));
2323 Inst.addOperand(MCOperand::createReg(0));
2324 Inst.addOperand(MCOperand::createImm(0));
2328 int32_t Val = Memory.OffsetImm ? Memory.OffsetImm->getValue() : 0;
2329 if (!Memory.OffsetRegNum) {
2330 ARM_AM::AddrOpc AddSub = Val < 0 ? ARM_AM::sub : ARM_AM::add;
2331 // Special case for #-0
2332 if (Val == INT32_MIN) Val = 0;
2333 if (Val < 0) Val = -Val;
2334 Val = ARM_AM::getAM3Opc(AddSub, Val);
2336 // For register offset, we encode the shift type and negation flag
2338 Val = ARM_AM::getAM3Opc(Memory.isNegative ? ARM_AM::sub : ARM_AM::add, 0);
2340 Inst.addOperand(MCOperand::createReg(Memory.BaseRegNum));
2341 Inst.addOperand(MCOperand::createReg(Memory.OffsetRegNum));
2342 Inst.addOperand(MCOperand::createImm(Val));
2345 void addAM3OffsetOperands(MCInst &Inst, unsigned N) const {
2346 assert(N == 2 && "Invalid number of operands!");
2347 if (Kind == k_PostIndexRegister) {
2349 ARM_AM::getAM3Opc(PostIdxReg.isAdd ? ARM_AM::add : ARM_AM::sub, 0);
2350 Inst.addOperand(MCOperand::createReg(PostIdxReg.RegNum));
2351 Inst.addOperand(MCOperand::createImm(Val));
2356 const MCConstantExpr *CE = static_cast<const MCConstantExpr*>(getImm());
2357 int32_t Val = CE->getValue();
2358 ARM_AM::AddrOpc AddSub = Val < 0 ? ARM_AM::sub : ARM_AM::add;
2359 // Special case for #-0
2360 if (Val == INT32_MIN) Val = 0;
2361 if (Val < 0) Val = -Val;
2362 Val = ARM_AM::getAM3Opc(AddSub, Val);
2363 Inst.addOperand(MCOperand::createReg(0));
2364 Inst.addOperand(MCOperand::createImm(Val));
2367 void addAddrMode5Operands(MCInst &Inst, unsigned N) const {
2368 assert(N == 2 && "Invalid number of operands!");
2369 // If we have an immediate that's not a constant, treat it as a label
2370 // reference needing a fixup. If it is a constant, it's something else
2371 // and we reject it.
2373 Inst.addOperand(MCOperand::createExpr(getImm()));
2374 Inst.addOperand(MCOperand::createImm(0));
2378 // The lower two bits are always zero and as such are not encoded.
2379 int32_t Val = Memory.OffsetImm ? Memory.OffsetImm->getValue() / 4 : 0;
2380 ARM_AM::AddrOpc AddSub = Val < 0 ? ARM_AM::sub : ARM_AM::add;
2381 // Special case for #-0
2382 if (Val == INT32_MIN) Val = 0;
2383 if (Val < 0) Val = -Val;
2384 Val = ARM_AM::getAM5Opc(AddSub, Val);
2385 Inst.addOperand(MCOperand::createReg(Memory.BaseRegNum));
2386 Inst.addOperand(MCOperand::createImm(Val));
2389 void addAddrMode5FP16Operands(MCInst &Inst, unsigned N) const {
2390 assert(N == 2 && "Invalid number of operands!");
2391 // If we have an immediate that's not a constant, treat it as a label
2392 // reference needing a fixup. If it is a constant, it's something else
2393 // and we reject it.
2395 Inst.addOperand(MCOperand::createExpr(getImm()));
2396 Inst.addOperand(MCOperand::createImm(0));
2400 // The lower bit is always zero and as such is not encoded.
2401 int32_t Val = Memory.OffsetImm ? Memory.OffsetImm->getValue() / 2 : 0;
2402 ARM_AM::AddrOpc AddSub = Val < 0 ? ARM_AM::sub : ARM_AM::add;
2403 // Special case for #-0
2404 if (Val == INT32_MIN) Val = 0;
2405 if (Val < 0) Val = -Val;
2406 Val = ARM_AM::getAM5FP16Opc(AddSub, Val);
2407 Inst.addOperand(MCOperand::createReg(Memory.BaseRegNum));
2408 Inst.addOperand(MCOperand::createImm(Val));
2411 void addMemImm8s4OffsetOperands(MCInst &Inst, unsigned N) const {
2412 assert(N == 2 && "Invalid number of operands!");
2413 // If we have an immediate that's not a constant, treat it as a label
2414 // reference needing a fixup. If it is a constant, it's something else
2415 // and we reject it.
2417 Inst.addOperand(MCOperand::createExpr(getImm()));
2418 Inst.addOperand(MCOperand::createImm(0));
2422 int64_t Val = Memory.OffsetImm ? Memory.OffsetImm->getValue() : 0;
2423 Inst.addOperand(MCOperand::createReg(Memory.BaseRegNum));
2424 Inst.addOperand(MCOperand::createImm(Val));
2427 void addMemImm0_1020s4OffsetOperands(MCInst &Inst, unsigned N) const {
2428 assert(N == 2 && "Invalid number of operands!");
2429 // The lower two bits are always zero and as such are not encoded.
2430 int32_t Val = Memory.OffsetImm ? Memory.OffsetImm->getValue() / 4 : 0;
2431 Inst.addOperand(MCOperand::createReg(Memory.BaseRegNum));
2432 Inst.addOperand(MCOperand::createImm(Val));
2435 void addMemImm8OffsetOperands(MCInst &Inst, unsigned N) const {
2436 assert(N == 2 && "Invalid number of operands!");
2437 int64_t Val = Memory.OffsetImm ? Memory.OffsetImm->getValue() : 0;
2438 Inst.addOperand(MCOperand::createReg(Memory.BaseRegNum));
2439 Inst.addOperand(MCOperand::createImm(Val));
2442 void addMemPosImm8OffsetOperands(MCInst &Inst, unsigned N) const {
2443 addMemImm8OffsetOperands(Inst, N);
2446 void addMemNegImm8OffsetOperands(MCInst &Inst, unsigned N) const {
2447 addMemImm8OffsetOperands(Inst, N);
2450 void addMemUImm12OffsetOperands(MCInst &Inst, unsigned N) const {
2451 assert(N == 2 && "Invalid number of operands!");
2452 // If this is an immediate, it's a label reference.
2454 addExpr(Inst, getImm());
2455 Inst.addOperand(MCOperand::createImm(0));
2459 // Otherwise, it's a normal memory reg+offset.
2460 int64_t Val = Memory.OffsetImm ? Memory.OffsetImm->getValue() : 0;
2461 Inst.addOperand(MCOperand::createReg(Memory.BaseRegNum));
2462 Inst.addOperand(MCOperand::createImm(Val));
2465 void addMemImm12OffsetOperands(MCInst &Inst, unsigned N) const {
2466 assert(N == 2 && "Invalid number of operands!");
2467 // If this is an immediate, it's a label reference.
2469 addExpr(Inst, getImm());
2470 Inst.addOperand(MCOperand::createImm(0));
2474 // Otherwise, it's a normal memory reg+offset.
2475 int64_t Val = Memory.OffsetImm ? Memory.OffsetImm->getValue() : 0;
2476 Inst.addOperand(MCOperand::createReg(Memory.BaseRegNum));
2477 Inst.addOperand(MCOperand::createImm(Val));
2480 void addConstPoolAsmImmOperands(MCInst &Inst, unsigned N) const {
2481 assert(N == 1 && "Invalid number of operands!");
2482 // This is container for the immediate that we will create the constant
2484 addExpr(Inst, getConstantPoolImm());
2488 void addMemTBBOperands(MCInst &Inst, unsigned N) const {
2489 assert(N == 2 && "Invalid number of operands!");
2490 Inst.addOperand(MCOperand::createReg(Memory.BaseRegNum));
2491 Inst.addOperand(MCOperand::createReg(Memory.OffsetRegNum));
2494 void addMemTBHOperands(MCInst &Inst, unsigned N) const {
2495 assert(N == 2 && "Invalid number of operands!");
2496 Inst.addOperand(MCOperand::createReg(Memory.BaseRegNum));
2497 Inst.addOperand(MCOperand::createReg(Memory.OffsetRegNum));
2500 void addMemRegOffsetOperands(MCInst &Inst, unsigned N) const {
2501 assert(N == 3 && "Invalid number of operands!");
2503 ARM_AM::getAM2Opc(Memory.isNegative ? ARM_AM::sub : ARM_AM::add,
2504 Memory.ShiftImm, Memory.ShiftType);
2505 Inst.addOperand(MCOperand::createReg(Memory.BaseRegNum));
2506 Inst.addOperand(MCOperand::createReg(Memory.OffsetRegNum));
2507 Inst.addOperand(MCOperand::createImm(Val));
2510 void addT2MemRegOffsetOperands(MCInst &Inst, unsigned N) const {
2511 assert(N == 3 && "Invalid number of operands!");
2512 Inst.addOperand(MCOperand::createReg(Memory.BaseRegNum));
2513 Inst.addOperand(MCOperand::createReg(Memory.OffsetRegNum));
2514 Inst.addOperand(MCOperand::createImm(Memory.ShiftImm));
2517 void addMemThumbRROperands(MCInst &Inst, unsigned N) const {
2518 assert(N == 2 && "Invalid number of operands!");
2519 Inst.addOperand(MCOperand::createReg(Memory.BaseRegNum));
2520 Inst.addOperand(MCOperand::createReg(Memory.OffsetRegNum));
2523 void addMemThumbRIs4Operands(MCInst &Inst, unsigned N) const {
2524 assert(N == 2 && "Invalid number of operands!");
2525 int64_t Val = Memory.OffsetImm ? (Memory.OffsetImm->getValue() / 4) : 0;
2526 Inst.addOperand(MCOperand::createReg(Memory.BaseRegNum));
2527 Inst.addOperand(MCOperand::createImm(Val));
2530 void addMemThumbRIs2Operands(MCInst &Inst, unsigned N) const {
2531 assert(N == 2 && "Invalid number of operands!");
2532 int64_t Val = Memory.OffsetImm ? (Memory.OffsetImm->getValue() / 2) : 0;
2533 Inst.addOperand(MCOperand::createReg(Memory.BaseRegNum));
2534 Inst.addOperand(MCOperand::createImm(Val));
2537 void addMemThumbRIs1Operands(MCInst &Inst, unsigned N) const {
2538 assert(N == 2 && "Invalid number of operands!");
2539 int64_t Val = Memory.OffsetImm ? (Memory.OffsetImm->getValue()) : 0;
2540 Inst.addOperand(MCOperand::createReg(Memory.BaseRegNum));
2541 Inst.addOperand(MCOperand::createImm(Val));
2544 void addMemThumbSPIOperands(MCInst &Inst, unsigned N) const {
2545 assert(N == 2 && "Invalid number of operands!");
2546 int64_t Val = Memory.OffsetImm ? (Memory.OffsetImm->getValue() / 4) : 0;
2547 Inst.addOperand(MCOperand::createReg(Memory.BaseRegNum));
2548 Inst.addOperand(MCOperand::createImm(Val));
2551 void addPostIdxImm8Operands(MCInst &Inst, unsigned N) const {
2552 assert(N == 1 && "Invalid number of operands!");
2553 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
2554 assert(CE && "non-constant post-idx-imm8 operand!");
2555 int Imm = CE->getValue();
2556 bool isAdd = Imm >= 0;
2557 if (Imm == INT32_MIN) Imm = 0;
2558 Imm = (Imm < 0 ? -Imm : Imm) | (int)isAdd << 8;
2559 Inst.addOperand(MCOperand::createImm(Imm));
2562 void addPostIdxImm8s4Operands(MCInst &Inst, unsigned N) const {
2563 assert(N == 1 && "Invalid number of operands!");
2564 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
2565 assert(CE && "non-constant post-idx-imm8s4 operand!");
2566 int Imm = CE->getValue();
2567 bool isAdd = Imm >= 0;
2568 if (Imm == INT32_MIN) Imm = 0;
2569 // Immediate is scaled by 4.
2570 Imm = ((Imm < 0 ? -Imm : Imm) / 4) | (int)isAdd << 8;
2571 Inst.addOperand(MCOperand::createImm(Imm));
2574 void addPostIdxRegOperands(MCInst &Inst, unsigned N) const {
2575 assert(N == 2 && "Invalid number of operands!");
2576 Inst.addOperand(MCOperand::createReg(PostIdxReg.RegNum));
2577 Inst.addOperand(MCOperand::createImm(PostIdxReg.isAdd));
2580 void addPostIdxRegShiftedOperands(MCInst &Inst, unsigned N) const {
2581 assert(N == 2 && "Invalid number of operands!");
2582 Inst.addOperand(MCOperand::createReg(PostIdxReg.RegNum));
2583 // The sign, shift type, and shift amount are encoded in a single operand
2584 // using the AM2 encoding helpers.
2585 ARM_AM::AddrOpc opc = PostIdxReg.isAdd ? ARM_AM::add : ARM_AM::sub;
2586 unsigned Imm = ARM_AM::getAM2Opc(opc, PostIdxReg.ShiftImm,
2587 PostIdxReg.ShiftTy);
2588 Inst.addOperand(MCOperand::createImm(Imm));
2591 void addMSRMaskOperands(MCInst &Inst, unsigned N) const {
2592 assert(N == 1 && "Invalid number of operands!");
2593 Inst.addOperand(MCOperand::createImm(unsigned(getMSRMask())));
2596 void addBankedRegOperands(MCInst &Inst, unsigned N) const {
2597 assert(N == 1 && "Invalid number of operands!");
2598 Inst.addOperand(MCOperand::createImm(unsigned(getBankedReg())));
2601 void addProcIFlagsOperands(MCInst &Inst, unsigned N) const {
2602 assert(N == 1 && "Invalid number of operands!");
2603 Inst.addOperand(MCOperand::createImm(unsigned(getProcIFlags())));
2606 void addVecListOperands(MCInst &Inst, unsigned N) const {
2607 assert(N == 1 && "Invalid number of operands!");
2608 Inst.addOperand(MCOperand::createReg(VectorList.RegNum));
2611 void addVecListIndexedOperands(MCInst &Inst, unsigned N) const {
2612 assert(N == 2 && "Invalid number of operands!");
2613 Inst.addOperand(MCOperand::createReg(VectorList.RegNum));
2614 Inst.addOperand(MCOperand::createImm(VectorList.LaneIndex));
2617 void addVectorIndex8Operands(MCInst &Inst, unsigned N) const {
2618 assert(N == 1 && "Invalid number of operands!");
2619 Inst.addOperand(MCOperand::createImm(getVectorIndex()));
2622 void addVectorIndex16Operands(MCInst &Inst, unsigned N) const {
2623 assert(N == 1 && "Invalid number of operands!");
2624 Inst.addOperand(MCOperand::createImm(getVectorIndex()));
2627 void addVectorIndex32Operands(MCInst &Inst, unsigned N) const {
2628 assert(N == 1 && "Invalid number of operands!");
2629 Inst.addOperand(MCOperand::createImm(getVectorIndex()));
2632 void addNEONi8splatOperands(MCInst &Inst, unsigned N) const {
2633 assert(N == 1 && "Invalid number of operands!");
2634 // The immediate encodes the type of constant as well as the value.
2635 // Mask in that this is an i8 splat.
2636 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
2637 Inst.addOperand(MCOperand::createImm(CE->getValue() | 0xe00));
2640 void addNEONi16splatOperands(MCInst &Inst, unsigned N) const {
2641 assert(N == 1 && "Invalid number of operands!");
2642 // The immediate encodes the type of constant as well as the value.
2643 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
2644 unsigned Value = CE->getValue();
2645 Value = ARM_AM::encodeNEONi16splat(Value);
2646 Inst.addOperand(MCOperand::createImm(Value));
2649 void addNEONi16splatNotOperands(MCInst &Inst, unsigned N) const {
2650 assert(N == 1 && "Invalid number of operands!");
2651 // The immediate encodes the type of constant as well as the value.
2652 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
2653 unsigned Value = CE->getValue();
2654 Value = ARM_AM::encodeNEONi16splat(~Value & 0xffff);
2655 Inst.addOperand(MCOperand::createImm(Value));
2658 void addNEONi32splatOperands(MCInst &Inst, unsigned N) const {
2659 assert(N == 1 && "Invalid number of operands!");
2660 // The immediate encodes the type of constant as well as the value.
2661 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
2662 unsigned Value = CE->getValue();
2663 Value = ARM_AM::encodeNEONi32splat(Value);
2664 Inst.addOperand(MCOperand::createImm(Value));
2667 void addNEONi32splatNotOperands(MCInst &Inst, unsigned N) const {
2668 assert(N == 1 && "Invalid number of operands!");
2669 // The immediate encodes the type of constant as well as the value.
2670 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
2671 unsigned Value = CE->getValue();
2672 Value = ARM_AM::encodeNEONi32splat(~Value);
2673 Inst.addOperand(MCOperand::createImm(Value));
2676 void addNEONinvByteReplicateOperands(MCInst &Inst, unsigned N) const {
2677 assert(N == 1 && "Invalid number of operands!");
2678 // The immediate encodes the type of constant as well as the value.
2679 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
2680 unsigned Value = CE->getValue();
2681 assert((Inst.getOpcode() == ARM::VMOVv8i8 ||
2682 Inst.getOpcode() == ARM::VMOVv16i8) &&
2683 "All vmvn instructions that wants to replicate non-zero byte "
2684 "always must be replaced with VMOVv8i8 or VMOVv16i8.");
2685 unsigned B = ((~Value) & 0xff);
2686 B |= 0xe00; // cmode = 0b1110
2687 Inst.addOperand(MCOperand::createImm(B));
2689 void addNEONi32vmovOperands(MCInst &Inst, unsigned N) const {
2690 assert(N == 1 && "Invalid number of operands!");
2691 // The immediate encodes the type of constant as well as the value.
2692 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
2693 unsigned Value = CE->getValue();
2694 if (Value >= 256 && Value <= 0xffff)
2695 Value = (Value >> 8) | ((Value & 0xff) ? 0xc00 : 0x200);
2696 else if (Value > 0xffff && Value <= 0xffffff)
2697 Value = (Value >> 16) | ((Value & 0xff) ? 0xd00 : 0x400);
2698 else if (Value > 0xffffff)
2699 Value = (Value >> 24) | 0x600;
2700 Inst.addOperand(MCOperand::createImm(Value));
2703 void addNEONvmovByteReplicateOperands(MCInst &Inst, unsigned N) const {
2704 assert(N == 1 && "Invalid number of operands!");
2705 // The immediate encodes the type of constant as well as the value.
2706 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
2707 unsigned Value = CE->getValue();
2708 assert((Inst.getOpcode() == ARM::VMOVv8i8 ||
2709 Inst.getOpcode() == ARM::VMOVv16i8) &&
2710 "All instructions that wants to replicate non-zero byte "
2711 "always must be replaced with VMOVv8i8 or VMOVv16i8.");
2712 unsigned B = Value & 0xff;
2713 B |= 0xe00; // cmode = 0b1110
2714 Inst.addOperand(MCOperand::createImm(B));
2716 void addNEONi32vmovNegOperands(MCInst &Inst, unsigned N) const {
2717 assert(N == 1 && "Invalid number of operands!");
2718 // The immediate encodes the type of constant as well as the value.
2719 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
2720 unsigned Value = ~CE->getValue();
2721 if (Value >= 256 && Value <= 0xffff)
2722 Value = (Value >> 8) | ((Value & 0xff) ? 0xc00 : 0x200);
2723 else if (Value > 0xffff && Value <= 0xffffff)
2724 Value = (Value >> 16) | ((Value & 0xff) ? 0xd00 : 0x400);
2725 else if (Value > 0xffffff)
2726 Value = (Value >> 24) | 0x600;
2727 Inst.addOperand(MCOperand::createImm(Value));
2730 void addNEONi64splatOperands(MCInst &Inst, unsigned N) const {
2731 assert(N == 1 && "Invalid number of operands!");
2732 // The immediate encodes the type of constant as well as the value.
2733 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
2734 uint64_t Value = CE->getValue();
2736 for (unsigned i = 0; i < 8; ++i, Value >>= 8) {
2737 Imm |= (Value & 1) << i;
2739 Inst.addOperand(MCOperand::createImm(Imm | 0x1e00));
2742 void print(raw_ostream &OS) const override;
2744 static std::unique_ptr<ARMOperand> CreateITMask(unsigned Mask, SMLoc S) {
2745 auto Op = make_unique<ARMOperand>(k_ITCondMask);
2746 Op->ITMask.Mask = Mask;
2752 static std::unique_ptr<ARMOperand> CreateCondCode(ARMCC::CondCodes CC,
2754 auto Op = make_unique<ARMOperand>(k_CondCode);
2761 static std::unique_ptr<ARMOperand> CreateCoprocNum(unsigned CopVal, SMLoc S) {
2762 auto Op = make_unique<ARMOperand>(k_CoprocNum);
2763 Op->Cop.Val = CopVal;
2769 static std::unique_ptr<ARMOperand> CreateCoprocReg(unsigned CopVal, SMLoc S) {
2770 auto Op = make_unique<ARMOperand>(k_CoprocReg);
2771 Op->Cop.Val = CopVal;
2777 static std::unique_ptr<ARMOperand> CreateCoprocOption(unsigned Val, SMLoc S,
2779 auto Op = make_unique<ARMOperand>(k_CoprocOption);
2786 static std::unique_ptr<ARMOperand> CreateCCOut(unsigned RegNum, SMLoc S) {
2787 auto Op = make_unique<ARMOperand>(k_CCOut);
2788 Op->Reg.RegNum = RegNum;
2794 static std::unique_ptr<ARMOperand> CreateToken(StringRef Str, SMLoc S) {
2795 auto Op = make_unique<ARMOperand>(k_Token);
2796 Op->Tok.Data = Str.data();
2797 Op->Tok.Length = Str.size();
2803 static std::unique_ptr<ARMOperand> CreateReg(unsigned RegNum, SMLoc S,
2805 auto Op = make_unique<ARMOperand>(k_Register);
2806 Op->Reg.RegNum = RegNum;
2812 static std::unique_ptr<ARMOperand>
2813 CreateShiftedRegister(ARM_AM::ShiftOpc ShTy, unsigned SrcReg,
2814 unsigned ShiftReg, unsigned ShiftImm, SMLoc S,
2816 auto Op = make_unique<ARMOperand>(k_ShiftedRegister);
2817 Op->RegShiftedReg.ShiftTy = ShTy;
2818 Op->RegShiftedReg.SrcReg = SrcReg;
2819 Op->RegShiftedReg.ShiftReg = ShiftReg;
2820 Op->RegShiftedReg.ShiftImm = ShiftImm;
2826 static std::unique_ptr<ARMOperand>
2827 CreateShiftedImmediate(ARM_AM::ShiftOpc ShTy, unsigned SrcReg,
2828 unsigned ShiftImm, SMLoc S, SMLoc E) {
2829 auto Op = make_unique<ARMOperand>(k_ShiftedImmediate);
2830 Op->RegShiftedImm.ShiftTy = ShTy;
2831 Op->RegShiftedImm.SrcReg = SrcReg;
2832 Op->RegShiftedImm.ShiftImm = ShiftImm;
2838 static std::unique_ptr<ARMOperand> CreateShifterImm(bool isASR, unsigned Imm,
2840 auto Op = make_unique<ARMOperand>(k_ShifterImmediate);
2841 Op->ShifterImm.isASR = isASR;
2842 Op->ShifterImm.Imm = Imm;
2848 static std::unique_ptr<ARMOperand> CreateRotImm(unsigned Imm, SMLoc S,
2850 auto Op = make_unique<ARMOperand>(k_RotateImmediate);
2851 Op->RotImm.Imm = Imm;
2857 static std::unique_ptr<ARMOperand> CreateModImm(unsigned Bits, unsigned Rot,
2859 auto Op = make_unique<ARMOperand>(k_ModifiedImmediate);
2860 Op->ModImm.Bits = Bits;
2861 Op->ModImm.Rot = Rot;
2867 static std::unique_ptr<ARMOperand>
2868 CreateConstantPoolImm(const MCExpr *Val, SMLoc S, SMLoc E) {
2869 auto Op = make_unique<ARMOperand>(k_ConstantPoolImmediate);
2876 static std::unique_ptr<ARMOperand>
2877 CreateBitfield(unsigned LSB, unsigned Width, SMLoc S, SMLoc E) {
2878 auto Op = make_unique<ARMOperand>(k_BitfieldDescriptor);
2879 Op->Bitfield.LSB = LSB;
2880 Op->Bitfield.Width = Width;
2886 static std::unique_ptr<ARMOperand>
2887 CreateRegList(SmallVectorImpl<std::pair<unsigned, unsigned>> &Regs,
2888 SMLoc StartLoc, SMLoc EndLoc) {
2889 assert (Regs.size() > 0 && "RegList contains no registers?");
2890 KindTy Kind = k_RegisterList;
2892 if (ARMMCRegisterClasses[ARM::DPRRegClassID].contains(Regs.front().second))
2893 Kind = k_DPRRegisterList;
2894 else if (ARMMCRegisterClasses[ARM::SPRRegClassID].
2895 contains(Regs.front().second))
2896 Kind = k_SPRRegisterList;
2898 // Sort based on the register encoding values.
2899 array_pod_sort(Regs.begin(), Regs.end());
2901 auto Op = make_unique<ARMOperand>(Kind);
2902 for (SmallVectorImpl<std::pair<unsigned, unsigned> >::const_iterator
2903 I = Regs.begin(), E = Regs.end(); I != E; ++I)
2904 Op->Registers.push_back(I->second);
2905 Op->StartLoc = StartLoc;
2906 Op->EndLoc = EndLoc;
2910 static std::unique_ptr<ARMOperand> CreateVectorList(unsigned RegNum,
2912 bool isDoubleSpaced,
2914 auto Op = make_unique<ARMOperand>(k_VectorList);
2915 Op->VectorList.RegNum = RegNum;
2916 Op->VectorList.Count = Count;
2917 Op->VectorList.isDoubleSpaced = isDoubleSpaced;
2923 static std::unique_ptr<ARMOperand>
2924 CreateVectorListAllLanes(unsigned RegNum, unsigned Count, bool isDoubleSpaced,
2926 auto Op = make_unique<ARMOperand>(k_VectorListAllLanes);
2927 Op->VectorList.RegNum = RegNum;
2928 Op->VectorList.Count = Count;
2929 Op->VectorList.isDoubleSpaced = isDoubleSpaced;
2935 static std::unique_ptr<ARMOperand>
2936 CreateVectorListIndexed(unsigned RegNum, unsigned Count, unsigned Index,
2937 bool isDoubleSpaced, SMLoc S, SMLoc E) {
2938 auto Op = make_unique<ARMOperand>(k_VectorListIndexed);
2939 Op->VectorList.RegNum = RegNum;
2940 Op->VectorList.Count = Count;
2941 Op->VectorList.LaneIndex = Index;
2942 Op->VectorList.isDoubleSpaced = isDoubleSpaced;
2948 static std::unique_ptr<ARMOperand>
2949 CreateVectorIndex(unsigned Idx, SMLoc S, SMLoc E, MCContext &Ctx) {
2950 auto Op = make_unique<ARMOperand>(k_VectorIndex);
2951 Op->VectorIndex.Val = Idx;
2957 static std::unique_ptr<ARMOperand> CreateImm(const MCExpr *Val, SMLoc S,
2959 auto Op = make_unique<ARMOperand>(k_Immediate);
2966 static std::unique_ptr<ARMOperand>
2967 CreateMem(unsigned BaseRegNum, const MCConstantExpr *OffsetImm,
2968 unsigned OffsetRegNum, ARM_AM::ShiftOpc ShiftType,
2969 unsigned ShiftImm, unsigned Alignment, bool isNegative, SMLoc S,
2970 SMLoc E, SMLoc AlignmentLoc = SMLoc()) {
2971 auto Op = make_unique<ARMOperand>(k_Memory);
2972 Op->Memory.BaseRegNum = BaseRegNum;
2973 Op->Memory.OffsetImm = OffsetImm;
2974 Op->Memory.OffsetRegNum = OffsetRegNum;
2975 Op->Memory.ShiftType = ShiftType;
2976 Op->Memory.ShiftImm = ShiftImm;
2977 Op->Memory.Alignment = Alignment;
2978 Op->Memory.isNegative = isNegative;
2981 Op->AlignmentLoc = AlignmentLoc;
2985 static std::unique_ptr<ARMOperand>
2986 CreatePostIdxReg(unsigned RegNum, bool isAdd, ARM_AM::ShiftOpc ShiftTy,
2987 unsigned ShiftImm, SMLoc S, SMLoc E) {
2988 auto Op = make_unique<ARMOperand>(k_PostIndexRegister);
2989 Op->PostIdxReg.RegNum = RegNum;
2990 Op->PostIdxReg.isAdd = isAdd;
2991 Op->PostIdxReg.ShiftTy = ShiftTy;
2992 Op->PostIdxReg.ShiftImm = ShiftImm;
2998 static std::unique_ptr<ARMOperand> CreateMemBarrierOpt(ARM_MB::MemBOpt Opt,
3000 auto Op = make_unique<ARMOperand>(k_MemBarrierOpt);
3001 Op->MBOpt.Val = Opt;
3007 static std::unique_ptr<ARMOperand>
3008 CreateInstSyncBarrierOpt(ARM_ISB::InstSyncBOpt Opt, SMLoc S) {
3009 auto Op = make_unique<ARMOperand>(k_InstSyncBarrierOpt);
3010 Op->ISBOpt.Val = Opt;
3016 static std::unique_ptr<ARMOperand> CreateProcIFlags(ARM_PROC::IFlags IFlags,
3018 auto Op = make_unique<ARMOperand>(k_ProcIFlags);
3019 Op->IFlags.Val = IFlags;
3025 static std::unique_ptr<ARMOperand> CreateMSRMask(unsigned MMask, SMLoc S) {
3026 auto Op = make_unique<ARMOperand>(k_MSRMask);
3027 Op->MMask.Val = MMask;
3033 static std::unique_ptr<ARMOperand> CreateBankedReg(unsigned Reg, SMLoc S) {
3034 auto Op = make_unique<ARMOperand>(k_BankedReg);
3035 Op->BankedReg.Val = Reg;
3042 } // end anonymous namespace.
3044 void ARMOperand::print(raw_ostream &OS) const {
3047 OS << "<ARMCC::" << ARMCondCodeToString(getCondCode()) << ">";
3050 OS << "<ccout " << getReg() << ">";
3052 case k_ITCondMask: {
3053 static const char *const MaskStr[] = {
3054 "()", "(t)", "(e)", "(tt)", "(et)", "(te)", "(ee)", "(ttt)", "(ett)",
3055 "(tet)", "(eet)", "(tte)", "(ete)", "(tee)", "(eee)"
3057 assert((ITMask.Mask & 0xf) == ITMask.Mask);
3058 OS << "<it-mask " << MaskStr[ITMask.Mask] << ">";
3062 OS << "<coprocessor number: " << getCoproc() << ">";
3065 OS << "<coprocessor register: " << getCoproc() << ">";
3067 case k_CoprocOption:
3068 OS << "<coprocessor option: " << CoprocOption.Val << ">";
3071 OS << "<mask: " << getMSRMask() << ">";
3074 OS << "<banked reg: " << getBankedReg() << ">";
3079 case k_MemBarrierOpt:
3080 OS << "<ARM_MB::" << MemBOptToString(getMemBarrierOpt(), false) << ">";
3082 case k_InstSyncBarrierOpt:
3083 OS << "<ARM_ISB::" << InstSyncBOptToString(getInstSyncBarrierOpt()) << ">";
3087 << " base:" << Memory.BaseRegNum;
3090 case k_PostIndexRegister:
3091 OS << "post-idx register " << (PostIdxReg.isAdd ? "" : "-")
3092 << PostIdxReg.RegNum;
3093 if (PostIdxReg.ShiftTy != ARM_AM::no_shift)
3094 OS << ARM_AM::getShiftOpcStr(PostIdxReg.ShiftTy) << " "
3095 << PostIdxReg.ShiftImm;
3098 case k_ProcIFlags: {
3099 OS << "<ARM_PROC::";
3100 unsigned IFlags = getProcIFlags();
3101 for (int i=2; i >= 0; --i)
3102 if (IFlags & (1 << i))
3103 OS << ARM_PROC::IFlagsToString(1 << i);
3108 OS << "<register " << getReg() << ">";
3110 case k_ShifterImmediate:
3111 OS << "<shift " << (ShifterImm.isASR ? "asr" : "lsl")
3112 << " #" << ShifterImm.Imm << ">";
3114 case k_ShiftedRegister:
3115 OS << "<so_reg_reg "
3116 << RegShiftedReg.SrcReg << " "
3117 << ARM_AM::getShiftOpcStr(RegShiftedReg.ShiftTy)
3118 << " " << RegShiftedReg.ShiftReg << ">";
3120 case k_ShiftedImmediate:
3121 OS << "<so_reg_imm "
3122 << RegShiftedImm.SrcReg << " "
3123 << ARM_AM::getShiftOpcStr(RegShiftedImm.ShiftTy)
3124 << " #" << RegShiftedImm.ShiftImm << ">";
3126 case k_RotateImmediate:
3127 OS << "<ror " << " #" << (RotImm.Imm * 8) << ">";
3129 case k_ModifiedImmediate:
3130 OS << "<mod_imm #" << ModImm.Bits << ", #"
3131 << ModImm.Rot << ")>";
3133 case k_ConstantPoolImmediate:
3134 OS << "<constant_pool_imm #" << *getConstantPoolImm();
3136 case k_BitfieldDescriptor:
3137 OS << "<bitfield " << "lsb: " << Bitfield.LSB
3138 << ", width: " << Bitfield.Width << ">";
3140 case k_RegisterList:
3141 case k_DPRRegisterList:
3142 case k_SPRRegisterList: {
3143 OS << "<register_list ";
3145 const SmallVectorImpl<unsigned> &RegList = getRegList();
3146 for (SmallVectorImpl<unsigned>::const_iterator
3147 I = RegList.begin(), E = RegList.end(); I != E; ) {
3149 if (++I < E) OS << ", ";
3156 OS << "<vector_list " << VectorList.Count << " * "
3157 << VectorList.RegNum << ">";
3159 case k_VectorListAllLanes:
3160 OS << "<vector_list(all lanes) " << VectorList.Count << " * "
3161 << VectorList.RegNum << ">";
3163 case k_VectorListIndexed:
3164 OS << "<vector_list(lane " << VectorList.LaneIndex << ") "
3165 << VectorList.Count << " * " << VectorList.RegNum << ">";
3168 OS << "'" << getToken() << "'";
3171 OS << "<vectorindex " << getVectorIndex() << ">";
3176 /// @name Auto-generated Match Functions
3179 static unsigned MatchRegisterName(StringRef Name);
3183 bool ARMAsmParser::ParseRegister(unsigned &RegNo,
3184 SMLoc &StartLoc, SMLoc &EndLoc) {
3185 const AsmToken &Tok = getParser().getTok();
3186 StartLoc = Tok.getLoc();
3187 EndLoc = Tok.getEndLoc();
3188 RegNo = tryParseRegister();
3190 return (RegNo == (unsigned)-1);
3193 /// Try to parse a register name. The token must be an Identifier when called,
3194 /// and if it is a register name the token is eaten and the register number is
3195 /// returned. Otherwise return -1.
3197 int ARMAsmParser::tryParseRegister() {
3198 MCAsmParser &Parser = getParser();
3199 const AsmToken &Tok = Parser.getTok();
3200 if (Tok.isNot(AsmToken::Identifier)) return -1;
3202 std::string lowerCase = Tok.getString().lower();
3203 unsigned RegNum = MatchRegisterName(lowerCase);
3205 RegNum = StringSwitch<unsigned>(lowerCase)
3206 .Case("r13", ARM::SP)
3207 .Case("r14", ARM::LR)
3208 .Case("r15", ARM::PC)
3209 .Case("ip", ARM::R12)
3210 // Additional register name aliases for 'gas' compatibility.
3211 .Case("a1", ARM::R0)
3212 .Case("a2", ARM::R1)
3213 .Case("a3", ARM::R2)
3214 .Case("a4", ARM::R3)
3215 .Case("v1", ARM::R4)
3216 .Case("v2", ARM::R5)
3217 .Case("v3", ARM::R6)
3218 .Case("v4", ARM::R7)
3219 .Case("v5", ARM::R8)
3220 .Case("v6", ARM::R9)
3221 .Case("v7", ARM::R10)
3222 .Case("v8", ARM::R11)
3223 .Case("sb", ARM::R9)
3224 .Case("sl", ARM::R10)
3225 .Case("fp", ARM::R11)
3229 // Check for aliases registered via .req. Canonicalize to lower case.
3230 // That's more consistent since register names are case insensitive, and
3231 // it's how the original entry was passed in from MC/MCParser/AsmParser.
3232 StringMap<unsigned>::const_iterator Entry = RegisterReqs.find(lowerCase);
3233 // If no match, return failure.
3234 if (Entry == RegisterReqs.end())
3236 Parser.Lex(); // Eat identifier token.
3237 return Entry->getValue();
3240 // Some FPUs only have 16 D registers, so D16-D31 are invalid
3241 if (hasD16() && RegNum >= ARM::D16 && RegNum <= ARM::D31)
3244 Parser.Lex(); // Eat identifier token.
3249 // Try to parse a shifter (e.g., "lsl <amt>"). On success, return 0.
3250 // If a recoverable error occurs, return 1. If an irrecoverable error
3251 // occurs, return -1. An irrecoverable error is one where tokens have been
3252 // consumed in the process of trying to parse the shifter (i.e., when it is
3253 // indeed a shifter operand, but malformed).
3254 int ARMAsmParser::tryParseShiftRegister(OperandVector &Operands) {
3255 MCAsmParser &Parser = getParser();
3256 SMLoc S = Parser.getTok().getLoc();
3257 const AsmToken &Tok = Parser.getTok();
3258 if (Tok.isNot(AsmToken::Identifier))
3261 std::string lowerCase = Tok.getString().lower();
3262 ARM_AM::ShiftOpc ShiftTy = StringSwitch<ARM_AM::ShiftOpc>(lowerCase)
3263 .Case("asl", ARM_AM::lsl)
3264 .Case("lsl", ARM_AM::lsl)
3265 .Case("lsr", ARM_AM::lsr)
3266 .Case("asr", ARM_AM::asr)
3267 .Case("ror", ARM_AM::ror)
3268 .Case("rrx", ARM_AM::rrx)
3269 .Default(ARM_AM::no_shift);
3271 if (ShiftTy == ARM_AM::no_shift)
3274 Parser.Lex(); // Eat the operator.
3276 // The source register for the shift has already been added to the
3277 // operand list, so we need to pop it off and combine it into the shifted
3278 // register operand instead.
3279 std::unique_ptr<ARMOperand> PrevOp(
3280 (ARMOperand *)Operands.pop_back_val().release());
3281 if (!PrevOp->isReg())
3282 return Error(PrevOp->getStartLoc(), "shift must be of a register");
3283 int SrcReg = PrevOp->getReg();
3288 if (ShiftTy == ARM_AM::rrx) {
3289 // RRX Doesn't have an explicit shift amount. The encoder expects
3290 // the shift register to be the same as the source register. Seems odd,
3294 // Figure out if this is shifted by a constant or a register (for non-RRX).
3295 if (Parser.getTok().is(AsmToken::Hash) ||
3296 Parser.getTok().is(AsmToken::Dollar)) {
3297 Parser.Lex(); // Eat hash.
3298 SMLoc ImmLoc = Parser.getTok().getLoc();
3299 const MCExpr *ShiftExpr = nullptr;
3300 if (getParser().parseExpression(ShiftExpr, EndLoc)) {
3301 Error(ImmLoc, "invalid immediate shift value");
3304 // The expression must be evaluatable as an immediate.
3305 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(ShiftExpr);
3307 Error(ImmLoc, "invalid immediate shift value");
3310 // Range check the immediate.
3311 // lsl, ror: 0 <= imm <= 31
3312 // lsr, asr: 0 <= imm <= 32
3313 Imm = CE->getValue();
3315 ((ShiftTy == ARM_AM::lsl || ShiftTy == ARM_AM::ror) && Imm > 31) ||
3316 ((ShiftTy == ARM_AM::lsr || ShiftTy == ARM_AM::asr) && Imm > 32)) {
3317 Error(ImmLoc, "immediate shift value out of range");
3320 // shift by zero is a nop. Always send it through as lsl.
3321 // ('as' compatibility)
3323 ShiftTy = ARM_AM::lsl;
3324 } else if (Parser.getTok().is(AsmToken::Identifier)) {
3325 SMLoc L = Parser.getTok().getLoc();
3326 EndLoc = Parser.getTok().getEndLoc();
3327 ShiftReg = tryParseRegister();
3328 if (ShiftReg == -1) {
3329 Error(L, "expected immediate or register in shift operand");
3333 Error(Parser.getTok().getLoc(),
3334 "expected immediate or register in shift operand");
3339 if (ShiftReg && ShiftTy != ARM_AM::rrx)
3340 Operands.push_back(ARMOperand::CreateShiftedRegister(ShiftTy, SrcReg,
3344 Operands.push_back(ARMOperand::CreateShiftedImmediate(ShiftTy, SrcReg, Imm,
3351 /// Try to parse a register name. The token must be an Identifier when called.
3352 /// If it's a register, an AsmOperand is created. Another AsmOperand is created
3353 /// if there is a "writeback". 'true' if it's not a register.
3355 /// TODO this is likely to change to allow different register types and or to
3356 /// parse for a specific register type.
3357 bool ARMAsmParser::tryParseRegisterWithWriteBack(OperandVector &Operands) {
3358 MCAsmParser &Parser = getParser();
3359 const AsmToken &RegTok = Parser.getTok();
3360 int RegNo = tryParseRegister();
3364 Operands.push_back(ARMOperand::CreateReg(RegNo, RegTok.getLoc(),
3365 RegTok.getEndLoc()));
3367 const AsmToken &ExclaimTok = Parser.getTok();
3368 if (ExclaimTok.is(AsmToken::Exclaim)) {
3369 Operands.push_back(ARMOperand::CreateToken(ExclaimTok.getString(),
3370 ExclaimTok.getLoc()));
3371 Parser.Lex(); // Eat exclaim token
3375 // Also check for an index operand. This is only legal for vector registers,
3376 // but that'll get caught OK in operand matching, so we don't need to
3377 // explicitly filter everything else out here.
3378 if (Parser.getTok().is(AsmToken::LBrac)) {
3379 SMLoc SIdx = Parser.getTok().getLoc();
3380 Parser.Lex(); // Eat left bracket token.
3382 const MCExpr *ImmVal;
3383 if (getParser().parseExpression(ImmVal))
3385 const MCConstantExpr *MCE = dyn_cast<MCConstantExpr>(ImmVal);
3387 return TokError("immediate value expected for vector index");
3389 if (Parser.getTok().isNot(AsmToken::RBrac))
3390 return Error(Parser.getTok().getLoc(), "']' expected");
3392 SMLoc E = Parser.getTok().getEndLoc();
3393 Parser.Lex(); // Eat right bracket token.
3395 Operands.push_back(ARMOperand::CreateVectorIndex(MCE->getValue(),
3403 /// MatchCoprocessorOperandName - Try to parse an coprocessor related
3404 /// instruction with a symbolic operand name.
3405 /// We accept "crN" syntax for GAS compatibility.
3406 /// <operand-name> ::= <prefix><number>
3407 /// If CoprocOp is 'c', then:
3408 /// <prefix> ::= c | cr
3409 /// If CoprocOp is 'p', then :
3411 /// <number> ::= integer in range [0, 15]
3412 static int MatchCoprocessorOperandName(StringRef Name, char CoprocOp) {
3413 // Use the same layout as the tablegen'erated register name matcher. Ugly,
3415 if (Name.size() < 2 || Name[0] != CoprocOp)
3417 Name = (Name[1] == 'r') ? Name.drop_front(2) : Name.drop_front();
3419 switch (Name.size()) {
3440 // CP10 and CP11 are VFP/NEON and so vector instructions should be used.
3441 // However, old cores (v5/v6) did use them in that way.
3442 case '0': return 10;
3443 case '1': return 11;
3444 case '2': return 12;
3445 case '3': return 13;
3446 case '4': return 14;
3447 case '5': return 15;
3452 /// parseITCondCode - Try to parse a condition code for an IT instruction.
3453 OperandMatchResultTy
3454 ARMAsmParser::parseITCondCode(OperandVector &Operands) {
3455 MCAsmParser &Parser = getParser();
3456 SMLoc S = Parser.getTok().getLoc();
3457 const AsmToken &Tok = Parser.getTok();
3458 if (!Tok.is(AsmToken::Identifier))
3459 return MatchOperand_NoMatch;
3460 unsigned CC = StringSwitch<unsigned>(Tok.getString().lower())
3461 .Case("eq", ARMCC::EQ)
3462 .Case("ne", ARMCC::NE)
3463 .Case("hs", ARMCC::HS)
3464 .Case("cs", ARMCC::HS)
3465 .Case("lo", ARMCC::LO)
3466 .Case("cc", ARMCC::LO)
3467 .Case("mi", ARMCC::MI)
3468 .Case("pl", ARMCC::PL)
3469 .Case("vs", ARMCC::VS)
3470 .Case("vc", ARMCC::VC)
3471 .Case("hi", ARMCC::HI)
3472 .Case("ls", ARMCC::LS)
3473 .Case("ge", ARMCC::GE)
3474 .Case("lt", ARMCC::LT)
3475 .Case("gt", ARMCC::GT)
3476 .Case("le", ARMCC::LE)
3477 .Case("al", ARMCC::AL)
3480 return MatchOperand_NoMatch;
3481 Parser.Lex(); // Eat the token.
3483 Operands.push_back(ARMOperand::CreateCondCode(ARMCC::CondCodes(CC), S));
3485 return MatchOperand_Success;
3488 /// parseCoprocNumOperand - Try to parse an coprocessor number operand. The
3489 /// token must be an Identifier when called, and if it is a coprocessor
3490 /// number, the token is eaten and the operand is added to the operand list.
3491 OperandMatchResultTy
3492 ARMAsmParser::parseCoprocNumOperand(OperandVector &Operands) {
3493 MCAsmParser &Parser = getParser();
3494 SMLoc S = Parser.getTok().getLoc();
3495 const AsmToken &Tok = Parser.getTok();
3496 if (Tok.isNot(AsmToken::Identifier))
3497 return MatchOperand_NoMatch;
3499 int Num = MatchCoprocessorOperandName(Tok.getString(), 'p');
3501 return MatchOperand_NoMatch;
3502 // ARMv7 and v8 don't allow cp10/cp11 due to VFP/NEON specific instructions
3503 if ((hasV7Ops() || hasV8Ops()) && (Num == 10 || Num == 11))
3504 return MatchOperand_NoMatch;
3506 Parser.Lex(); // Eat identifier token.
3507 Operands.push_back(ARMOperand::CreateCoprocNum(Num, S));
3508 return MatchOperand_Success;
3511 /// parseCoprocRegOperand - Try to parse an coprocessor register operand. The
3512 /// token must be an Identifier when called, and if it is a coprocessor
3513 /// number, the token is eaten and the operand is added to the operand list.
3514 OperandMatchResultTy
3515 ARMAsmParser::parseCoprocRegOperand(OperandVector &Operands) {
3516 MCAsmParser &Parser = getParser();
3517 SMLoc S = Parser.getTok().getLoc();
3518 const AsmToken &Tok = Parser.getTok();
3519 if (Tok.isNot(AsmToken::Identifier))
3520 return MatchOperand_NoMatch;
3522 int Reg = MatchCoprocessorOperandName(Tok.getString(), 'c');
3524 return MatchOperand_NoMatch;
3526 Parser.Lex(); // Eat identifier token.
3527 Operands.push_back(ARMOperand::CreateCoprocReg(Reg, S));
3528 return MatchOperand_Success;
3531 /// parseCoprocOptionOperand - Try to parse an coprocessor option operand.
3532 /// coproc_option : '{' imm0_255 '}'
3533 OperandMatchResultTy
3534 ARMAsmParser::parseCoprocOptionOperand(OperandVector &Operands) {
3535 MCAsmParser &Parser = getParser();
3536 SMLoc S = Parser.getTok().getLoc();
3538 // If this isn't a '{', this isn't a coprocessor immediate operand.
3539 if (Parser.getTok().isNot(AsmToken::LCurly))
3540 return MatchOperand_NoMatch;
3541 Parser.Lex(); // Eat the '{'
3544 SMLoc Loc = Parser.getTok().getLoc();
3545 if (getParser().parseExpression(Expr)) {
3546 Error(Loc, "illegal expression");
3547 return MatchOperand_ParseFail;
3549 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(Expr);
3550 if (!CE || CE->getValue() < 0 || CE->getValue() > 255) {
3551 Error(Loc, "coprocessor option must be an immediate in range [0, 255]");
3552 return MatchOperand_ParseFail;
3554 int Val = CE->getValue();
3556 // Check for and consume the closing '}'
3557 if (Parser.getTok().isNot(AsmToken::RCurly))
3558 return MatchOperand_ParseFail;
3559 SMLoc E = Parser.getTok().getEndLoc();
3560 Parser.Lex(); // Eat the '}'
3562 Operands.push_back(ARMOperand::CreateCoprocOption(Val, S, E));
3563 return MatchOperand_Success;
3566 // For register list parsing, we need to map from raw GPR register numbering
3567 // to the enumeration values. The enumeration values aren't sorted by
3568 // register number due to our using "sp", "lr" and "pc" as canonical names.
3569 static unsigned getNextRegister(unsigned Reg) {
3570 // If this is a GPR, we need to do it manually, otherwise we can rely
3571 // on the sort ordering of the enumeration since the other reg-classes
3573 if (!ARMMCRegisterClasses[ARM::GPRRegClassID].contains(Reg))
3576 default: llvm_unreachable("Invalid GPR number!");
3577 case ARM::R0: return ARM::R1; case ARM::R1: return ARM::R2;
3578 case ARM::R2: return ARM::R3; case ARM::R3: return ARM::R4;
3579 case ARM::R4: return ARM::R5; case ARM::R5: return ARM::R6;
3580 case ARM::R6: return ARM::R7; case ARM::R7: return ARM::R8;
3581 case ARM::R8: return ARM::R9; case ARM::R9: return ARM::R10;
3582 case ARM::R10: return ARM::R11; case ARM::R11: return ARM::R12;
3583 case ARM::R12: return ARM::SP; case ARM::SP: return ARM::LR;
3584 case ARM::LR: return ARM::PC; case ARM::PC: return ARM::R0;
3588 // Return the low-subreg of a given Q register.
3589 static unsigned getDRegFromQReg(unsigned QReg) {
3591 default: llvm_unreachable("expected a Q register!");
3592 case ARM::Q0: return ARM::D0;
3593 case ARM::Q1: return ARM::D2;
3594 case ARM::Q2: return ARM::D4;
3595 case ARM::Q3: return ARM::D6;
3596 case ARM::Q4: return ARM::D8;
3597 case ARM::Q5: return ARM::D10;
3598 case ARM::Q6: return ARM::D12;
3599 case ARM::Q7: return ARM::D14;
3600 case ARM::Q8: return ARM::D16;
3601 case ARM::Q9: return ARM::D18;
3602 case ARM::Q10: return ARM::D20;
3603 case ARM::Q11: return ARM::D22;
3604 case ARM::Q12: return ARM::D24;
3605 case ARM::Q13: return ARM::D26;
3606 case ARM::Q14: return ARM::D28;
3607 case ARM::Q15: return ARM::D30;
3611 /// Parse a register list.
3612 bool ARMAsmParser::parseRegisterList(OperandVector &Operands) {
3613 MCAsmParser &Parser = getParser();
3614 if (Parser.getTok().isNot(AsmToken::LCurly))
3615 return TokError("Token is not a Left Curly Brace");
3616 SMLoc S = Parser.getTok().getLoc();
3617 Parser.Lex(); // Eat '{' token.
3618 SMLoc RegLoc = Parser.getTok().getLoc();
3620 // Check the first register in the list to see what register class
3621 // this is a list of.
3622 int Reg = tryParseRegister();
3624 return Error(RegLoc, "register expected");
3626 // The reglist instructions have at most 16 registers, so reserve
3627 // space for that many.
3629 SmallVector<std::pair<unsigned, unsigned>, 16> Registers;
3631 // Allow Q regs and just interpret them as the two D sub-registers.
3632 if (ARMMCRegisterClasses[ARM::QPRRegClassID].contains(Reg)) {
3633 Reg = getDRegFromQReg(Reg);
3634 EReg = MRI->getEncodingValue(Reg);
3635 Registers.push_back(std::pair<unsigned, unsigned>(EReg, Reg));
3638 const MCRegisterClass *RC;
3639 if (ARMMCRegisterClasses[ARM::GPRRegClassID].contains(Reg))
3640 RC = &ARMMCRegisterClasses[ARM::GPRRegClassID];
3641 else if (ARMMCRegisterClasses[ARM::DPRRegClassID].contains(Reg))
3642 RC = &ARMMCRegisterClasses[ARM::DPRRegClassID];
3643 else if (ARMMCRegisterClasses[ARM::SPRRegClassID].contains(Reg))
3644 RC = &ARMMCRegisterClasses[ARM::SPRRegClassID];
3646 return Error(RegLoc, "invalid register in register list");
3648 // Store the register.
3649 EReg = MRI->getEncodingValue(Reg);
3650 Registers.push_back(std::pair<unsigned, unsigned>(EReg, Reg));
3652 // This starts immediately after the first register token in the list,
3653 // so we can see either a comma or a minus (range separator) as a legal
3655 while (Parser.getTok().is(AsmToken::Comma) ||
3656 Parser.getTok().is(AsmToken::Minus)) {
3657 if (Parser.getTok().is(AsmToken::Minus)) {
3658 Parser.Lex(); // Eat the minus.
3659 SMLoc AfterMinusLoc = Parser.getTok().getLoc();
3660 int EndReg = tryParseRegister();
3662 return Error(AfterMinusLoc, "register expected");
3663 // Allow Q regs and just interpret them as the two D sub-registers.
3664 if (ARMMCRegisterClasses[ARM::QPRRegClassID].contains(EndReg))
3665 EndReg = getDRegFromQReg(EndReg) + 1;
3666 // If the register is the same as the start reg, there's nothing
3670 // The register must be in the same register class as the first.
3671 if (!RC->contains(EndReg))
3672 return Error(AfterMinusLoc, "invalid register in register list");
3673 // Ranges must go from low to high.
3674 if (MRI->getEncodingValue(Reg) > MRI->getEncodingValue(EndReg))
3675 return Error(AfterMinusLoc, "bad range in register list");
3677 // Add all the registers in the range to the register list.
3678 while (Reg != EndReg) {
3679 Reg = getNextRegister(Reg);
3680 EReg = MRI->getEncodingValue(Reg);
3681 Registers.push_back(std::pair<unsigned, unsigned>(EReg, Reg));
3685 Parser.Lex(); // Eat the comma.
3686 RegLoc = Parser.getTok().getLoc();
3688 const AsmToken RegTok = Parser.getTok();
3689 Reg = tryParseRegister();
3691 return Error(RegLoc, "register expected");
3692 // Allow Q regs and just interpret them as the two D sub-registers.
3693 bool isQReg = false;
3694 if (ARMMCRegisterClasses[ARM::QPRRegClassID].contains(Reg)) {
3695 Reg = getDRegFromQReg(Reg);
3698 // The register must be in the same register class as the first.
3699 if (!RC->contains(Reg))
3700 return Error(RegLoc, "invalid register in register list");
3701 // List must be monotonically increasing.
3702 if (MRI->getEncodingValue(Reg) < MRI->getEncodingValue(OldReg)) {
3703 if (ARMMCRegisterClasses[ARM::GPRRegClassID].contains(Reg))
3704 Warning(RegLoc, "register list not in ascending order");
3706 return Error(RegLoc, "register list not in ascending order");
3708 if (MRI->getEncodingValue(Reg) == MRI->getEncodingValue(OldReg)) {
3709 Warning(RegLoc, "duplicated register (" + RegTok.getString() +
3710 ") in register list");
3713 // VFP register lists must also be contiguous.
3714 if (RC != &ARMMCRegisterClasses[ARM::GPRRegClassID] &&
3716 return Error(RegLoc, "non-contiguous register range");
3717 EReg = MRI->getEncodingValue(Reg);
3718 Registers.push_back(std::pair<unsigned, unsigned>(EReg, Reg));
3720 EReg = MRI->getEncodingValue(++Reg);
3721 Registers.push_back(std::pair<unsigned, unsigned>(EReg, Reg));
3725 if (Parser.getTok().isNot(AsmToken::RCurly))
3726 return Error(Parser.getTok().getLoc(), "'}' expected");
3727 SMLoc E = Parser.getTok().getEndLoc();
3728 Parser.Lex(); // Eat '}' token.
3730 // Push the register list operand.
3731 Operands.push_back(ARMOperand::CreateRegList(Registers, S, E));
3733 // The ARM system instruction variants for LDM/STM have a '^' token here.
3734 if (Parser.getTok().is(AsmToken::Caret)) {
3735 Operands.push_back(ARMOperand::CreateToken("^",Parser.getTok().getLoc()));
3736 Parser.Lex(); // Eat '^' token.
3742 // Helper function to parse the lane index for vector lists.
3743 OperandMatchResultTy ARMAsmParser::
3744 parseVectorLane(VectorLaneTy &LaneKind, unsigned &Index, SMLoc &EndLoc) {
3745 MCAsmParser &Parser = getParser();
3746 Index = 0; // Always return a defined index value.
3747 if (Parser.getTok().is(AsmToken::LBrac)) {
3748 Parser.Lex(); // Eat the '['.
3749 if (Parser.getTok().is(AsmToken::RBrac)) {
3750 // "Dn[]" is the 'all lanes' syntax.
3751 LaneKind = AllLanes;
3752 EndLoc = Parser.getTok().getEndLoc();
3753 Parser.Lex(); // Eat the ']'.
3754 return MatchOperand_Success;
3757 // There's an optional '#' token here. Normally there wouldn't be, but
3758 // inline assemble puts one in, and it's friendly to accept that.
3759 if (Parser.getTok().is(AsmToken::Hash))
3760 Parser.Lex(); // Eat '#' or '$'.
3762 const MCExpr *LaneIndex;
3763 SMLoc Loc = Parser.getTok().getLoc();
3764 if (getParser().parseExpression(LaneIndex)) {
3765 Error(Loc, "illegal expression");
3766 return MatchOperand_ParseFail;
3768 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(LaneIndex);
3770 Error(Loc, "lane index must be empty or an integer");
3771 return MatchOperand_ParseFail;
3773 if (Parser.getTok().isNot(AsmToken::RBrac)) {
3774 Error(Parser.getTok().getLoc(), "']' expected");
3775 return MatchOperand_ParseFail;
3777 EndLoc = Parser.getTok().getEndLoc();
3778 Parser.Lex(); // Eat the ']'.
3779 int64_t Val = CE->getValue();
3781 // FIXME: Make this range check context sensitive for .8, .16, .32.
3782 if (Val < 0 || Val > 7) {
3783 Error(Parser.getTok().getLoc(), "lane index out of range");
3784 return MatchOperand_ParseFail;
3787 LaneKind = IndexedLane;
3788 return MatchOperand_Success;
3791 return MatchOperand_Success;
3794 // parse a vector register list
3795 OperandMatchResultTy
3796 ARMAsmParser::parseVectorList(OperandVector &Operands) {
3797 MCAsmParser &Parser = getParser();
3798 VectorLaneTy LaneKind;
3800 SMLoc S = Parser.getTok().getLoc();
3801 // As an extension (to match gas), support a plain D register or Q register
3802 // (without encosing curly braces) as a single or double entry list,
3804 if (Parser.getTok().is(AsmToken::Identifier)) {
3805 SMLoc E = Parser.getTok().getEndLoc();
3806 int Reg = tryParseRegister();
3808 return MatchOperand_NoMatch;
3809 if (ARMMCRegisterClasses[ARM::DPRRegClassID].contains(Reg)) {
3810 OperandMatchResultTy Res = parseVectorLane(LaneKind, LaneIndex, E);
3811 if (Res != MatchOperand_Success)
3815 Operands.push_back(ARMOperand::CreateVectorList(Reg, 1, false, S, E));
3818 Operands.push_back(ARMOperand::CreateVectorListAllLanes(Reg, 1, false,
3822 Operands.push_back(ARMOperand::CreateVectorListIndexed(Reg, 1,
3827 return MatchOperand_Success;
3829 if (ARMMCRegisterClasses[ARM::QPRRegClassID].contains(Reg)) {
3830 Reg = getDRegFromQReg(Reg);
3831 OperandMatchResultTy Res = parseVectorLane(LaneKind, LaneIndex, E);
3832 if (Res != MatchOperand_Success)
3836 Reg = MRI->getMatchingSuperReg(Reg, ARM::dsub_0,
3837 &ARMMCRegisterClasses[ARM::DPairRegClassID]);
3838 Operands.push_back(ARMOperand::CreateVectorList(Reg, 2, false, S, E));
3841 Reg = MRI->getMatchingSuperReg(Reg, ARM::dsub_0,
3842 &ARMMCRegisterClasses[ARM::DPairRegClassID]);
3843 Operands.push_back(ARMOperand::CreateVectorListAllLanes(Reg, 2, false,
3847 Operands.push_back(ARMOperand::CreateVectorListIndexed(Reg, 2,
3852 return MatchOperand_Success;
3854 Error(S, "vector register expected");
3855 return MatchOperand_ParseFail;
3858 if (Parser.getTok().isNot(AsmToken::LCurly))
3859 return MatchOperand_NoMatch;
3861 Parser.Lex(); // Eat '{' token.
3862 SMLoc RegLoc = Parser.getTok().getLoc();
3864 int Reg = tryParseRegister();
3866 Error(RegLoc, "register expected");
3867 return MatchOperand_ParseFail;
3871 unsigned FirstReg = Reg;
3872 // The list is of D registers, but we also allow Q regs and just interpret
3873 // them as the two D sub-registers.
3874 if (ARMMCRegisterClasses[ARM::QPRRegClassID].contains(Reg)) {
3875 FirstReg = Reg = getDRegFromQReg(Reg);
3876 Spacing = 1; // double-spacing requires explicit D registers, otherwise
3877 // it's ambiguous with four-register single spaced.
3883 if (parseVectorLane(LaneKind, LaneIndex, E) != MatchOperand_Success)
3884 return MatchOperand_ParseFail;
3886 while (Parser.getTok().is(AsmToken::Comma) ||
3887 Parser.getTok().is(AsmToken::Minus)) {
3888 if (Parser.getTok().is(AsmToken::Minus)) {
3890 Spacing = 1; // Register range implies a single spaced list.
3891 else if (Spacing == 2) {
3892 Error(Parser.getTok().getLoc(),
3893 "sequential registers in double spaced list");
3894 return MatchOperand_ParseFail;
3896 Parser.Lex(); // Eat the minus.
3897 SMLoc AfterMinusLoc = Parser.getTok().getLoc();
3898 int EndReg = tryParseRegister();
3900 Error(AfterMinusLoc, "register expected");
3901 return MatchOperand_ParseFail;
3903 // Allow Q regs and just interpret them as the two D sub-registers.
3904 if (ARMMCRegisterClasses[ARM::QPRRegClassID].contains(EndReg))
3905 EndReg = getDRegFromQReg(EndReg) + 1;
3906 // If the register is the same as the start reg, there's nothing
3910 // The register must be in the same register class as the first.
3911 if (!ARMMCRegisterClasses[ARM::DPRRegClassID].contains(EndReg)) {
3912 Error(AfterMinusLoc, "invalid register in register list");
3913 return MatchOperand_ParseFail;
3915 // Ranges must go from low to high.
3917 Error(AfterMinusLoc, "bad range in register list");
3918 return MatchOperand_ParseFail;
3920 // Parse the lane specifier if present.
3921 VectorLaneTy NextLaneKind;
3922 unsigned NextLaneIndex;
3923 if (parseVectorLane(NextLaneKind, NextLaneIndex, E) !=
3924 MatchOperand_Success)
3925 return MatchOperand_ParseFail;
3926 if (NextLaneKind != LaneKind || LaneIndex != NextLaneIndex) {
3927 Error(AfterMinusLoc, "mismatched lane index in register list");
3928 return MatchOperand_ParseFail;
3931 // Add all the registers in the range to the register list.
3932 Count += EndReg - Reg;
3936 Parser.Lex(); // Eat the comma.
3937 RegLoc = Parser.getTok().getLoc();
3939 Reg = tryParseRegister();
3941 Error(RegLoc, "register expected");
3942 return MatchOperand_ParseFail;
3944 // vector register lists must be contiguous.
3945 // It's OK to use the enumeration values directly here rather, as the
3946 // VFP register classes have the enum sorted properly.
3948 // The list is of D registers, but we also allow Q regs and just interpret
3949 // them as the two D sub-registers.
3950 if (ARMMCRegisterClasses[ARM::QPRRegClassID].contains(Reg)) {
3952 Spacing = 1; // Register range implies a single spaced list.
3953 else if (Spacing == 2) {
3955 "invalid register in double-spaced list (must be 'D' register')");
3956 return MatchOperand_ParseFail;
3958 Reg = getDRegFromQReg(Reg);
3959 if (Reg != OldReg + 1) {
3960 Error(RegLoc, "non-contiguous register range");
3961 return MatchOperand_ParseFail;
3965 // Parse the lane specifier if present.
3966 VectorLaneTy NextLaneKind;
3967 unsigned NextLaneIndex;
3968 SMLoc LaneLoc = Parser.getTok().getLoc();
3969 if (parseVectorLane(NextLaneKind, NextLaneIndex, E) !=
3970 MatchOperand_Success)
3971 return MatchOperand_ParseFail;
3972 if (NextLaneKind != LaneKind || LaneIndex != NextLaneIndex) {
3973 Error(LaneLoc, "mismatched lane index in register list");
3974 return MatchOperand_ParseFail;
3978 // Normal D register.
3979 // Figure out the register spacing (single or double) of the list if
3980 // we don't know it already.
3982 Spacing = 1 + (Reg == OldReg + 2);
3984 // Just check that it's contiguous and keep going.
3985 if (Reg != OldReg + Spacing) {
3986 Error(RegLoc, "non-contiguous register range");
3987 return MatchOperand_ParseFail;
3990 // Parse the lane specifier if present.
3991 VectorLaneTy NextLaneKind;
3992 unsigned NextLaneIndex;
3993 SMLoc EndLoc = Parser.getTok().getLoc();
3994 if (parseVectorLane(NextLaneKind, NextLaneIndex, E) != MatchOperand_Success)
3995 return MatchOperand_ParseFail;
3996 if (NextLaneKind != LaneKind || LaneIndex != NextLaneIndex) {
3997 Error(EndLoc, "mismatched lane index in register list");
3998 return MatchOperand_ParseFail;
4002 if (Parser.getTok().isNot(AsmToken::RCurly)) {
4003 Error(Parser.getTok().getLoc(), "'}' expected");
4004 return MatchOperand_ParseFail;
4006 E = Parser.getTok().getEndLoc();
4007 Parser.Lex(); // Eat '}' token.
4011 // Two-register operands have been converted to the
4012 // composite register classes.
4014 const MCRegisterClass *RC = (Spacing == 1) ?
4015 &ARMMCRegisterClasses[ARM::DPairRegClassID] :
4016 &ARMMCRegisterClasses[ARM::DPairSpcRegClassID];
4017 FirstReg = MRI->getMatchingSuperReg(FirstReg, ARM::dsub_0, RC);
4020 Operands.push_back(ARMOperand::CreateVectorList(FirstReg, Count,
4021 (Spacing == 2), S, E));
4024 // Two-register operands have been converted to the
4025 // composite register classes.
4027 const MCRegisterClass *RC = (Spacing == 1) ?
4028 &ARMMCRegisterClasses[ARM::DPairRegClassID] :
4029 &ARMMCRegisterClasses[ARM::DPairSpcRegClassID];
4030 FirstReg = MRI->getMatchingSuperReg(FirstReg, ARM::dsub_0, RC);
4032 Operands.push_back(ARMOperand::CreateVectorListAllLanes(FirstReg, Count,
4037 Operands.push_back(ARMOperand::CreateVectorListIndexed(FirstReg, Count,
4043 return MatchOperand_Success;
4046 /// parseMemBarrierOptOperand - Try to parse DSB/DMB data barrier options.
4047 OperandMatchResultTy
4048 ARMAsmParser::parseMemBarrierOptOperand(OperandVector &Operands) {
4049 MCAsmParser &Parser = getParser();
4050 SMLoc S = Parser.getTok().getLoc();
4051 const AsmToken &Tok = Parser.getTok();
4054 if (Tok.is(AsmToken::Identifier)) {
4055 StringRef OptStr = Tok.getString();
4057 Opt = StringSwitch<unsigned>(OptStr.slice(0, OptStr.size()).lower())
4058 .Case("sy", ARM_MB::SY)
4059 .Case("st", ARM_MB::ST)
4060 .Case("ld", ARM_MB::LD)
4061 .Case("sh", ARM_MB::ISH)
4062 .Case("ish", ARM_MB::ISH)
4063 .Case("shst", ARM_MB::ISHST)
4064 .Case("ishst", ARM_MB::ISHST)
4065 .Case("ishld", ARM_MB::ISHLD)
4066 .Case("nsh", ARM_MB::NSH)
4067 .Case("un", ARM_MB::NSH)
4068 .Case("nshst", ARM_MB::NSHST)
4069 .Case("nshld", ARM_MB::NSHLD)
4070 .Case("unst", ARM_MB::NSHST)
4071 .Case("osh", ARM_MB::OSH)
4072 .Case("oshst", ARM_MB::OSHST)
4073 .Case("oshld", ARM_MB::OSHLD)
4076 // ishld, oshld, nshld and ld are only available from ARMv8.
4077 if (!hasV8Ops() && (Opt == ARM_MB::ISHLD || Opt == ARM_MB::OSHLD ||
4078 Opt == ARM_MB::NSHLD || Opt == ARM_MB::LD))
4082 return MatchOperand_NoMatch;
4084 Parser.Lex(); // Eat identifier token.
4085 } else if (Tok.is(AsmToken::Hash) ||
4086 Tok.is(AsmToken::Dollar) ||
4087 Tok.is(AsmToken::Integer)) {
4088 if (Parser.getTok().isNot(AsmToken::Integer))
4089 Parser.Lex(); // Eat '#' or '$'.
4090 SMLoc Loc = Parser.getTok().getLoc();
4092 const MCExpr *MemBarrierID;
4093 if (getParser().parseExpression(MemBarrierID)) {
4094 Error(Loc, "illegal expression");
4095 return MatchOperand_ParseFail;
4098 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(MemBarrierID);
4100 Error(Loc, "constant expression expected");
4101 return MatchOperand_ParseFail;
4104 int Val = CE->getValue();
4106 Error(Loc, "immediate value out of range");
4107 return MatchOperand_ParseFail;
4110 Opt = ARM_MB::RESERVED_0 + Val;
4112 return MatchOperand_ParseFail;
4114 Operands.push_back(ARMOperand::CreateMemBarrierOpt((ARM_MB::MemBOpt)Opt, S));
4115 return MatchOperand_Success;
4118 /// parseInstSyncBarrierOptOperand - Try to parse ISB inst sync barrier options.
4119 OperandMatchResultTy
4120 ARMAsmParser::parseInstSyncBarrierOptOperand(OperandVector &Operands) {
4121 MCAsmParser &Parser = getParser();
4122 SMLoc S = Parser.getTok().getLoc();
4123 const AsmToken &Tok = Parser.getTok();
4126 if (Tok.is(AsmToken::Identifier)) {
4127 StringRef OptStr = Tok.getString();
4129 if (OptStr.equals_lower("sy"))
4132 return MatchOperand_NoMatch;
4134 Parser.Lex(); // Eat identifier token.
4135 } else if (Tok.is(AsmToken::Hash) ||
4136 Tok.is(AsmToken::Dollar) ||
4137 Tok.is(AsmToken::Integer)) {
4138 if (Parser.getTok().isNot(AsmToken::Integer))
4139 Parser.Lex(); // Eat '#' or '$'.
4140 SMLoc Loc = Parser.getTok().getLoc();
4142 const MCExpr *ISBarrierID;
4143 if (getParser().parseExpression(ISBarrierID)) {
4144 Error(Loc, "illegal expression");
4145 return MatchOperand_ParseFail;
4148 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(ISBarrierID);
4150 Error(Loc, "constant expression expected");
4151 return MatchOperand_ParseFail;
4154 int Val = CE->getValue();
4156 Error(Loc, "immediate value out of range");
4157 return MatchOperand_ParseFail;
4160 Opt = ARM_ISB::RESERVED_0 + Val;
4162 return MatchOperand_ParseFail;
4164 Operands.push_back(ARMOperand::CreateInstSyncBarrierOpt(
4165 (ARM_ISB::InstSyncBOpt)Opt, S));
4166 return MatchOperand_Success;
4170 /// parseProcIFlagsOperand - Try to parse iflags from CPS instruction.
4171 OperandMatchResultTy
4172 ARMAsmParser::parseProcIFlagsOperand(OperandVector &Operands) {
4173 MCAsmParser &Parser = getParser();
4174 SMLoc S = Parser.getTok().getLoc();
4175 const AsmToken &Tok = Parser.getTok();
4176 if (!Tok.is(AsmToken::Identifier))
4177 return MatchOperand_NoMatch;
4178 StringRef IFlagsStr = Tok.getString();
4180 // An iflags string of "none" is interpreted to mean that none of the AIF
4181 // bits are set. Not a terribly useful instruction, but a valid encoding.
4182 unsigned IFlags = 0;
4183 if (IFlagsStr != "none") {
4184 for (int i = 0, e = IFlagsStr.size(); i != e; ++i) {
4185 unsigned Flag = StringSwitch<unsigned>(IFlagsStr.substr(i, 1))
4186 .Case("a", ARM_PROC::A)
4187 .Case("i", ARM_PROC::I)
4188 .Case("f", ARM_PROC::F)
4191 // If some specific iflag is already set, it means that some letter is
4192 // present more than once, this is not acceptable.
4193 if (Flag == ~0U || (IFlags & Flag))
4194 return MatchOperand_NoMatch;
4200 Parser.Lex(); // Eat identifier token.
4201 Operands.push_back(ARMOperand::CreateProcIFlags((ARM_PROC::IFlags)IFlags, S));
4202 return MatchOperand_Success;
4205 /// parseMSRMaskOperand - Try to parse mask flags from MSR instruction.
4206 OperandMatchResultTy
4207 ARMAsmParser::parseMSRMaskOperand(OperandVector &Operands) {
4208 MCAsmParser &Parser = getParser();
4209 SMLoc S = Parser.getTok().getLoc();
4210 const AsmToken &Tok = Parser.getTok();
4211 if (!Tok.is(AsmToken::Identifier))
4212 return MatchOperand_NoMatch;
4213 StringRef Mask = Tok.getString();
4216 // See ARMv6-M 10.1.1
4217 std::string Name = Mask.lower();
4218 unsigned FlagsVal = StringSwitch<unsigned>(Name)
4219 // Note: in the documentation:
4220 // ARM deprecates using MSR APSR without a _<bits> qualifier as an alias
4221 // for MSR APSR_nzcvq.
4222 // but we do make it an alias here. This is so to get the "mask encoding"
4223 // bits correct on MSR APSR writes.
4225 // FIXME: Note the 0xc00 "mask encoding" bits version of the registers
4226 // should really only be allowed when writing a special register. Note
4227 // they get dropped in the MRS instruction reading a special register as
4228 // the SYSm field is only 8 bits.
4229 .Case("apsr", 0x800)
4230 .Case("apsr_nzcvq", 0x800)
4231 .Case("apsr_g", 0x400)
4232 .Case("apsr_nzcvqg", 0xc00)
4233 .Case("iapsr", 0x801)
4234 .Case("iapsr_nzcvq", 0x801)
4235 .Case("iapsr_g", 0x401)
4236 .Case("iapsr_nzcvqg", 0xc01)
4237 .Case("eapsr", 0x802)
4238 .Case("eapsr_nzcvq", 0x802)
4239 .Case("eapsr_g", 0x402)
4240 .Case("eapsr_nzcvqg", 0xc02)
4241 .Case("xpsr", 0x803)
4242 .Case("xpsr_nzcvq", 0x803)
4243 .Case("xpsr_g", 0x403)
4244 .Case("xpsr_nzcvqg", 0xc03)
4245 .Case("ipsr", 0x805)
4246 .Case("epsr", 0x806)
4247 .Case("iepsr", 0x807)
4250 .Case("primask", 0x810)
4251 .Case("basepri", 0x811)
4252 .Case("basepri_max", 0x812)
4253 .Case("faultmask", 0x813)
4254 .Case("control", 0x814)
4255 .Case("msplim", 0x80a)
4256 .Case("psplim", 0x80b)
4257 .Case("msp_ns", 0x888)
4258 .Case("psp_ns", 0x889)
4259 .Case("msplim_ns", 0x88a)
4260 .Case("psplim_ns", 0x88b)
4261 .Case("primask_ns", 0x890)
4262 .Case("basepri_ns", 0x891)
4263 .Case("basepri_max_ns", 0x892)
4264 .Case("faultmask_ns", 0x893)
4265 .Case("control_ns", 0x894)
4266 .Case("sp_ns", 0x898)
4269 if (FlagsVal == ~0U)
4270 return MatchOperand_NoMatch;
4272 if (!hasDSP() && (FlagsVal & 0x400))
4273 // The _g and _nzcvqg versions are only valid if the DSP extension is
4275 return MatchOperand_NoMatch;
4277 if (!hasV7Ops() && FlagsVal >= 0x811 && FlagsVal <= 0x813)
4278 // basepri, basepri_max and faultmask only valid for V7m.
4279 return MatchOperand_NoMatch;
4281 if (!has8MSecExt() && (FlagsVal == 0x80a || FlagsVal == 0x80b ||
4282 (FlagsVal > 0x814 && FlagsVal < 0xc00)))
4283 return MatchOperand_NoMatch;
4285 if (!hasV8MMainline() && (FlagsVal == 0x88a || FlagsVal == 0x88b ||
4286 (FlagsVal > 0x890 && FlagsVal <= 0x893)))
4287 return MatchOperand_NoMatch;
4289 Parser.Lex(); // Eat identifier token.
4290 Operands.push_back(ARMOperand::CreateMSRMask(FlagsVal, S));
4291 return MatchOperand_Success;
4294 // Split spec_reg from flag, example: CPSR_sxf => "CPSR" and "sxf"
4295 size_t Start = 0, Next = Mask.find('_');
4296 StringRef Flags = "";
4297 std::string SpecReg = Mask.slice(Start, Next).lower();
4298 if (Next != StringRef::npos)
4299 Flags = Mask.slice(Next+1, Mask.size());
4301 // FlagsVal contains the complete mask:
4303 // 4: Special Reg (cpsr, apsr => 0; spsr => 1)
4304 unsigned FlagsVal = 0;
4306 if (SpecReg == "apsr") {
4307 FlagsVal = StringSwitch<unsigned>(Flags)
4308 .Case("nzcvq", 0x8) // same as CPSR_f
4309 .Case("g", 0x4) // same as CPSR_s
4310 .Case("nzcvqg", 0xc) // same as CPSR_fs
4313 if (FlagsVal == ~0U) {
4315 return MatchOperand_NoMatch;
4317 FlagsVal = 8; // No flag
4319 } else if (SpecReg == "cpsr" || SpecReg == "spsr") {
4320 // cpsr_all is an alias for cpsr_fc, as is plain cpsr.
4321 if (Flags == "all" || Flags == "")
4323 for (int i = 0, e = Flags.size(); i != e; ++i) {
4324 unsigned Flag = StringSwitch<unsigned>(Flags.substr(i, 1))
4331 // If some specific flag is already set, it means that some letter is
4332 // present more than once, this is not acceptable.
4333 if (FlagsVal == ~0U || (FlagsVal & Flag))
4334 return MatchOperand_NoMatch;
4337 } else // No match for special register.
4338 return MatchOperand_NoMatch;
4340 // Special register without flags is NOT equivalent to "fc" flags.
4341 // NOTE: This is a divergence from gas' behavior. Uncommenting the following
4342 // two lines would enable gas compatibility at the expense of breaking
4348 // Bit 4: Special Reg (cpsr, apsr => 0; spsr => 1)
4349 if (SpecReg == "spsr")
4352 Parser.Lex(); // Eat identifier token.
4353 Operands.push_back(ARMOperand::CreateMSRMask(FlagsVal, S));
4354 return MatchOperand_Success;
4357 /// parseBankedRegOperand - Try to parse a banked register (e.g. "lr_irq") for
4358 /// use in the MRS/MSR instructions added to support virtualization.
4359 OperandMatchResultTy
4360 ARMAsmParser::parseBankedRegOperand(OperandVector &Operands) {
4361 MCAsmParser &Parser = getParser();
4362 SMLoc S = Parser.getTok().getLoc();
4363 const AsmToken &Tok = Parser.getTok();
4364 if (!Tok.is(AsmToken::Identifier))
4365 return MatchOperand_NoMatch;
4366 StringRef RegName = Tok.getString();
4368 // The values here come from B9.2.3 of the ARM ARM, where bits 4-0 are SysM
4370 unsigned Encoding = StringSwitch<unsigned>(RegName.lower())
4371 .Case("r8_usr", 0x00)
4372 .Case("r9_usr", 0x01)
4373 .Case("r10_usr", 0x02)
4374 .Case("r11_usr", 0x03)
4375 .Case("r12_usr", 0x04)
4376 .Case("sp_usr", 0x05)
4377 .Case("lr_usr", 0x06)
4378 .Case("r8_fiq", 0x08)
4379 .Case("r9_fiq", 0x09)
4380 .Case("r10_fiq", 0x0a)
4381 .Case("r11_fiq", 0x0b)
4382 .Case("r12_fiq", 0x0c)
4383 .Case("sp_fiq", 0x0d)
4384 .Case("lr_fiq", 0x0e)
4385 .Case("lr_irq", 0x10)
4386 .Case("sp_irq", 0x11)
4387 .Case("lr_svc", 0x12)
4388 .Case("sp_svc", 0x13)
4389 .Case("lr_abt", 0x14)
4390 .Case("sp_abt", 0x15)
4391 .Case("lr_und", 0x16)
4392 .Case("sp_und", 0x17)
4393 .Case("lr_mon", 0x1c)
4394 .Case("sp_mon", 0x1d)
4395 .Case("elr_hyp", 0x1e)
4396 .Case("sp_hyp", 0x1f)
4397 .Case("spsr_fiq", 0x2e)
4398 .Case("spsr_irq", 0x30)
4399 .Case("spsr_svc", 0x32)
4400 .Case("spsr_abt", 0x34)
4401 .Case("spsr_und", 0x36)
4402 .Case("spsr_mon", 0x3c)
4403 .Case("spsr_hyp", 0x3e)
4406 if (Encoding == ~0U)
4407 return MatchOperand_NoMatch;
4409 Parser.Lex(); // Eat identifier token.
4410 Operands.push_back(ARMOperand::CreateBankedReg(Encoding, S));
4411 return MatchOperand_Success;
4414 OperandMatchResultTy
4415 ARMAsmParser::parsePKHImm(OperandVector &Operands, StringRef Op, int Low,
4417 MCAsmParser &Parser = getParser();
4418 const AsmToken &Tok = Parser.getTok();
4419 if (Tok.isNot(AsmToken::Identifier)) {
4420 Error(Parser.getTok().getLoc(), Op + " operand expected.");
4421 return MatchOperand_ParseFail;
4423 StringRef ShiftName = Tok.getString();
4424 std::string LowerOp = Op.lower();
4425 std::string UpperOp = Op.upper();
4426 if (ShiftName != LowerOp && ShiftName != UpperOp) {
4427 Error(Parser.getTok().getLoc(), Op + " operand expected.");
4428 return MatchOperand_ParseFail;
4430 Parser.Lex(); // Eat shift type token.
4432 // There must be a '#' and a shift amount.
4433 if (Parser.getTok().isNot(AsmToken::Hash) &&
4434 Parser.getTok().isNot(AsmToken::Dollar)) {
4435 Error(Parser.getTok().getLoc(), "'#' expected");
4436 return MatchOperand_ParseFail;
4438 Parser.Lex(); // Eat hash token.
4440 const MCExpr *ShiftAmount;
4441 SMLoc Loc = Parser.getTok().getLoc();
4443 if (getParser().parseExpression(ShiftAmount, EndLoc)) {
4444 Error(Loc, "illegal expression");
4445 return MatchOperand_ParseFail;
4447 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(ShiftAmount);
4449 Error(Loc, "constant expression expected");
4450 return MatchOperand_ParseFail;
4452 int Val = CE->getValue();
4453 if (Val < Low || Val > High) {
4454 Error(Loc, "immediate value out of range");
4455 return MatchOperand_ParseFail;
4458 Operands.push_back(ARMOperand::CreateImm(CE, Loc, EndLoc));
4460 return MatchOperand_Success;
4463 OperandMatchResultTy
4464 ARMAsmParser::parseSetEndImm(OperandVector &Operands) {
4465 MCAsmParser &Parser = getParser();
4466 const AsmToken &Tok = Parser.getTok();
4467 SMLoc S = Tok.getLoc();
4468 if (Tok.isNot(AsmToken::Identifier)) {
4469 Error(S, "'be' or 'le' operand expected");
4470 return MatchOperand_ParseFail;
4472 int Val = StringSwitch<int>(Tok.getString().lower())
4476 Parser.Lex(); // Eat the token.
4479 Error(S, "'be' or 'le' operand expected");
4480 return MatchOperand_ParseFail;
4482 Operands.push_back(ARMOperand::CreateImm(MCConstantExpr::create(Val,
4484 S, Tok.getEndLoc()));
4485 return MatchOperand_Success;
4488 /// parseShifterImm - Parse the shifter immediate operand for SSAT/USAT
4489 /// instructions. Legal values are:
4490 /// lsl #n 'n' in [0,31]
4491 /// asr #n 'n' in [1,32]
4492 /// n == 32 encoded as n == 0.
4493 OperandMatchResultTy
4494 ARMAsmParser::parseShifterImm(OperandVector &Operands) {
4495 MCAsmParser &Parser = getParser();
4496 const AsmToken &Tok = Parser.getTok();
4497 SMLoc S = Tok.getLoc();
4498 if (Tok.isNot(AsmToken::Identifier)) {
4499 Error(S, "shift operator 'asr' or 'lsl' expected");
4500 return MatchOperand_ParseFail;
4502 StringRef ShiftName = Tok.getString();
4504 if (ShiftName == "lsl" || ShiftName == "LSL")
4506 else if (ShiftName == "asr" || ShiftName == "ASR")
4509 Error(S, "shift operator 'asr' or 'lsl' expected");
4510 return MatchOperand_ParseFail;
4512 Parser.Lex(); // Eat the operator.
4514 // A '#' and a shift amount.
4515 if (Parser.getTok().isNot(AsmToken::Hash) &&
4516 Parser.getTok().isNot(AsmToken::Dollar)) {
4517 Error(Parser.getTok().getLoc(), "'#' expected");
4518 return MatchOperand_ParseFail;
4520 Parser.Lex(); // Eat hash token.
4521 SMLoc ExLoc = Parser.getTok().getLoc();
4523 const MCExpr *ShiftAmount;
4525 if (getParser().parseExpression(ShiftAmount, EndLoc)) {
4526 Error(ExLoc, "malformed shift expression");
4527 return MatchOperand_ParseFail;
4529 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(ShiftAmount);
4531 Error(ExLoc, "shift amount must be an immediate");
4532 return MatchOperand_ParseFail;
4535 int64_t Val = CE->getValue();
4537 // Shift amount must be in [1,32]
4538 if (Val < 1 || Val > 32) {
4539 Error(ExLoc, "'asr' shift amount must be in range [1,32]");
4540 return MatchOperand_ParseFail;
4542 // asr #32 encoded as asr #0, but is not allowed in Thumb2 mode.
4543 if (isThumb() && Val == 32) {
4544 Error(ExLoc, "'asr #32' shift amount not allowed in Thumb mode");
4545 return MatchOperand_ParseFail;
4547 if (Val == 32) Val = 0;
4549 // Shift amount must be in [1,32]
4550 if (Val < 0 || Val > 31) {
4551 Error(ExLoc, "'lsr' shift amount must be in range [0,31]");
4552 return MatchOperand_ParseFail;
4556 Operands.push_back(ARMOperand::CreateShifterImm(isASR, Val, S, EndLoc));
4558 return MatchOperand_Success;
4561 /// parseRotImm - Parse the shifter immediate operand for SXTB/UXTB family
4562 /// of instructions. Legal values are:
4563 /// ror #n 'n' in {0, 8, 16, 24}
4564 OperandMatchResultTy
4565 ARMAsmParser::parseRotImm(OperandVector &Operands) {
4566 MCAsmParser &Parser = getParser();
4567 const AsmToken &Tok = Parser.getTok();
4568 SMLoc S = Tok.getLoc();
4569 if (Tok.isNot(AsmToken::Identifier))
4570 return MatchOperand_NoMatch;
4571 StringRef ShiftName = Tok.getString();
4572 if (ShiftName != "ror" && ShiftName != "ROR")
4573 return MatchOperand_NoMatch;
4574 Parser.Lex(); // Eat the operator.
4576 // A '#' and a rotate amount.
4577 if (Parser.getTok().isNot(AsmToken::Hash) &&
4578 Parser.getTok().isNot(AsmToken::Dollar)) {
4579 Error(Parser.getTok().getLoc(), "'#' expected");
4580 return MatchOperand_ParseFail;
4582 Parser.Lex(); // Eat hash token.
4583 SMLoc ExLoc = Parser.getTok().getLoc();
4585 const MCExpr *ShiftAmount;
4587 if (getParser().parseExpression(ShiftAmount, EndLoc)) {
4588 Error(ExLoc, "malformed rotate expression");
4589 return MatchOperand_ParseFail;
4591 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(ShiftAmount);
4593 Error(ExLoc, "rotate amount must be an immediate");
4594 return MatchOperand_ParseFail;
4597 int64_t Val = CE->getValue();
4598 // Shift amount must be in {0, 8, 16, 24} (0 is undocumented extension)
4599 // normally, zero is represented in asm by omitting the rotate operand
4601 if (Val != 8 && Val != 16 && Val != 24 && Val != 0) {
4602 Error(ExLoc, "'ror' rotate amount must be 8, 16, or 24");
4603 return MatchOperand_ParseFail;
4606 Operands.push_back(ARMOperand::CreateRotImm(Val, S, EndLoc));
4608 return MatchOperand_Success;
4611 OperandMatchResultTy
4612 ARMAsmParser::parseModImm(OperandVector &Operands) {
4613 MCAsmParser &Parser = getParser();
4614 MCAsmLexer &Lexer = getLexer();
4617 SMLoc S = Parser.getTok().getLoc();
4619 // 1) A mod_imm operand can appear in the place of a register name:
4621 // add r0, r0, #mod_imm
4622 // to correctly handle the latter, we bail out as soon as we see an
4625 // 2) Similarly, we do not want to parse into complex operands:
4627 // mov r0, :lower16:(_foo)
4628 if (Parser.getTok().is(AsmToken::Identifier) ||
4629 Parser.getTok().is(AsmToken::Colon))
4630 return MatchOperand_NoMatch;
4632 // Hash (dollar) is optional as per the ARMARM
4633 if (Parser.getTok().is(AsmToken::Hash) ||
4634 Parser.getTok().is(AsmToken::Dollar)) {
4635 // Avoid parsing into complex operands (#:)
4636 if (Lexer.peekTok().is(AsmToken::Colon))
4637 return MatchOperand_NoMatch;
4639 // Eat the hash (dollar)
4644 Sx1 = Parser.getTok().getLoc();
4645 const MCExpr *Imm1Exp;
4646 if (getParser().parseExpression(Imm1Exp, Ex1)) {
4647 Error(Sx1, "malformed expression");
4648 return MatchOperand_ParseFail;
4651 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(Imm1Exp);
4654 // Immediate must fit within 32-bits
4655 Imm1 = CE->getValue();
4656 int Enc = ARM_AM::getSOImmVal(Imm1);
4657 if (Enc != -1 && Parser.getTok().is(AsmToken::EndOfStatement)) {
4659 Operands.push_back(ARMOperand::CreateModImm((Enc & 0xFF),
4662 return MatchOperand_Success;
4665 // We have parsed an immediate which is not for us, fallback to a plain
4666 // immediate. This can happen for instruction aliases. For an example,
4667 // ARMInstrInfo.td defines the alias [mov <-> mvn] which can transform
4668 // a mov (mvn) with a mod_imm_neg/mod_imm_not operand into the opposite
4669 // instruction with a mod_imm operand. The alias is defined such that the
4670 // parser method is shared, that's why we have to do this here.
4671 if (Parser.getTok().is(AsmToken::EndOfStatement)) {
4672 Operands.push_back(ARMOperand::CreateImm(Imm1Exp, Sx1, Ex1));
4673 return MatchOperand_Success;
4676 // Operands like #(l1 - l2) can only be evaluated at a later stage (via an
4677 // MCFixup). Fallback to a plain immediate.
4678 Operands.push_back(ARMOperand::CreateImm(Imm1Exp, Sx1, Ex1));
4679 return MatchOperand_Success;
4682 // From this point onward, we expect the input to be a (#bits, #rot) pair
4683 if (Parser.getTok().isNot(AsmToken::Comma)) {
4684 Error(Sx1, "expected modified immediate operand: #[0, 255], #even[0-30]");
4685 return MatchOperand_ParseFail;
4689 Error(Sx1, "immediate operand must a number in the range [0, 255]");
4690 return MatchOperand_ParseFail;
4698 Sx2 = Parser.getTok().getLoc();
4700 // Eat the optional hash (dollar)
4701 if (Parser.getTok().is(AsmToken::Hash) ||
4702 Parser.getTok().is(AsmToken::Dollar))
4705 const MCExpr *Imm2Exp;
4706 if (getParser().parseExpression(Imm2Exp, Ex2)) {
4707 Error(Sx2, "malformed expression");
4708 return MatchOperand_ParseFail;
4711 CE = dyn_cast<MCConstantExpr>(Imm2Exp);
4714 Imm2 = CE->getValue();
4715 if (!(Imm2 & ~0x1E)) {
4717 Operands.push_back(ARMOperand::CreateModImm(Imm1, Imm2, S, Ex2));
4718 return MatchOperand_Success;
4720 Error(Sx2, "immediate operand must an even number in the range [0, 30]");
4721 return MatchOperand_ParseFail;
4723 Error(Sx2, "constant expression expected");
4724 return MatchOperand_ParseFail;
4728 OperandMatchResultTy
4729 ARMAsmParser::parseBitfield(OperandVector &Operands) {
4730 MCAsmParser &Parser = getParser();
4731 SMLoc S = Parser.getTok().getLoc();
4732 // The bitfield descriptor is really two operands, the LSB and the width.
4733 if (Parser.getTok().isNot(AsmToken::Hash) &&
4734 Parser.getTok().isNot(AsmToken::Dollar)) {
4735 Error(Parser.getTok().getLoc(), "'#' expected");
4736 return MatchOperand_ParseFail;
4738 Parser.Lex(); // Eat hash token.
4740 const MCExpr *LSBExpr;
4741 SMLoc E = Parser.getTok().getLoc();
4742 if (getParser().parseExpression(LSBExpr)) {
4743 Error(E, "malformed immediate expression");
4744 return MatchOperand_ParseFail;
4746 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(LSBExpr);
4748 Error(E, "'lsb' operand must be an immediate");
4749 return MatchOperand_ParseFail;
4752 int64_t LSB = CE->getValue();
4753 // The LSB must be in the range [0,31]
4754 if (LSB < 0 || LSB > 31) {
4755 Error(E, "'lsb' operand must be in the range [0,31]");
4756 return MatchOperand_ParseFail;
4758 E = Parser.getTok().getLoc();
4760 // Expect another immediate operand.
4761 if (Parser.getTok().isNot(AsmToken::Comma)) {
4762 Error(Parser.getTok().getLoc(), "too few operands");
4763 return MatchOperand_ParseFail;
4765 Parser.Lex(); // Eat hash token.
4766 if (Parser.getTok().isNot(AsmToken::Hash) &&
4767 Parser.getTok().isNot(AsmToken::Dollar)) {
4768 Error(Parser.getTok().getLoc(), "'#' expected");
4769 return MatchOperand_ParseFail;
4771 Parser.Lex(); // Eat hash token.
4773 const MCExpr *WidthExpr;
4775 if (getParser().parseExpression(WidthExpr, EndLoc)) {
4776 Error(E, "malformed immediate expression");
4777 return MatchOperand_ParseFail;
4779 CE = dyn_cast<MCConstantExpr>(WidthExpr);
4781 Error(E, "'width' operand must be an immediate");
4782 return MatchOperand_ParseFail;
4785 int64_t Width = CE->getValue();
4786 // The LSB must be in the range [1,32-lsb]
4787 if (Width < 1 || Width > 32 - LSB) {
4788 Error(E, "'width' operand must be in the range [1,32-lsb]");
4789 return MatchOperand_ParseFail;
4792 Operands.push_back(ARMOperand::CreateBitfield(LSB, Width, S, EndLoc));
4794 return MatchOperand_Success;
4797 OperandMatchResultTy
4798 ARMAsmParser::parsePostIdxReg(OperandVector &Operands) {
4799 // Check for a post-index addressing register operand. Specifically:
4800 // postidx_reg := '+' register {, shift}
4801 // | '-' register {, shift}
4802 // | register {, shift}
4804 // This method must return MatchOperand_NoMatch without consuming any tokens
4805 // in the case where there is no match, as other alternatives take other
4807 MCAsmParser &Parser = getParser();
4808 AsmToken Tok = Parser.getTok();
4809 SMLoc S = Tok.getLoc();
4810 bool haveEaten = false;
4812 if (Tok.is(AsmToken::Plus)) {
4813 Parser.Lex(); // Eat the '+' token.
4815 } else if (Tok.is(AsmToken::Minus)) {
4816 Parser.Lex(); // Eat the '-' token.
4821 SMLoc E = Parser.getTok().getEndLoc();
4822 int Reg = tryParseRegister();
4825 return MatchOperand_NoMatch;
4826 Error(Parser.getTok().getLoc(), "register expected");
4827 return MatchOperand_ParseFail;
4830 ARM_AM::ShiftOpc ShiftTy = ARM_AM::no_shift;
4831 unsigned ShiftImm = 0;
4832 if (Parser.getTok().is(AsmToken::Comma)) {
4833 Parser.Lex(); // Eat the ','.
4834 if (parseMemRegOffsetShift(ShiftTy, ShiftImm))
4835 return MatchOperand_ParseFail;
4837 // FIXME: Only approximates end...may include intervening whitespace.
4838 E = Parser.getTok().getLoc();
4841 Operands.push_back(ARMOperand::CreatePostIdxReg(Reg, isAdd, ShiftTy,
4844 return MatchOperand_Success;
4847 OperandMatchResultTy
4848 ARMAsmParser::parseAM3Offset(OperandVector &Operands) {
4849 // Check for a post-index addressing register operand. Specifically:
4850 // am3offset := '+' register
4857 // This method must return MatchOperand_NoMatch without consuming any tokens
4858 // in the case where there is no match, as other alternatives take other
4860 MCAsmParser &Parser = getParser();
4861 AsmToken Tok = Parser.getTok();
4862 SMLoc S = Tok.getLoc();
4864 // Do immediates first, as we always parse those if we have a '#'.
4865 if (Parser.getTok().is(AsmToken::Hash) ||
4866 Parser.getTok().is(AsmToken::Dollar)) {
4867 Parser.Lex(); // Eat '#' or '$'.
4868 // Explicitly look for a '-', as we need to encode negative zero
4870 bool isNegative = Parser.getTok().is(AsmToken::Minus);
4871 const MCExpr *Offset;
4873 if (getParser().parseExpression(Offset, E))
4874 return MatchOperand_ParseFail;
4875 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(Offset);
4877 Error(S, "constant expression expected");
4878 return MatchOperand_ParseFail;
4880 // Negative zero is encoded as the flag value INT32_MIN.
4881 int32_t Val = CE->getValue();
4882 if (isNegative && Val == 0)
4886 ARMOperand::CreateImm(MCConstantExpr::create(Val, getContext()), S, E));
4888 return MatchOperand_Success;
4892 bool haveEaten = false;
4894 if (Tok.is(AsmToken::Plus)) {
4895 Parser.Lex(); // Eat the '+' token.
4897 } else if (Tok.is(AsmToken::Minus)) {
4898 Parser.Lex(); // Eat the '-' token.
4903 Tok = Parser.getTok();
4904 int Reg = tryParseRegister();
4907 return MatchOperand_NoMatch;
4908 Error(Tok.getLoc(), "register expected");
4909 return MatchOperand_ParseFail;
4912 Operands.push_back(ARMOperand::CreatePostIdxReg(Reg, isAdd, ARM_AM::no_shift,
4913 0, S, Tok.getEndLoc()));
4915 return MatchOperand_Success;
4918 /// Convert parsed operands to MCInst. Needed here because this instruction
4919 /// only has two register operands, but multiplication is commutative so
4920 /// assemblers should accept both "mul rD, rN, rD" and "mul rD, rD, rN".
4921 void ARMAsmParser::cvtThumbMultiply(MCInst &Inst,
4922 const OperandVector &Operands) {
4923 ((ARMOperand &)*Operands[3]).addRegOperands(Inst, 1);
4924 ((ARMOperand &)*Operands[1]).addCCOutOperands(Inst, 1);
4925 // If we have a three-operand form, make sure to set Rn to be the operand
4926 // that isn't the same as Rd.
4928 if (Operands.size() == 6 &&
4929 ((ARMOperand &)*Operands[4]).getReg() ==
4930 ((ARMOperand &)*Operands[3]).getReg())
4932 ((ARMOperand &)*Operands[RegOp]).addRegOperands(Inst, 1);
4933 Inst.addOperand(Inst.getOperand(0));
4934 ((ARMOperand &)*Operands[2]).addCondCodeOperands(Inst, 2);
4937 void ARMAsmParser::cvtThumbBranches(MCInst &Inst,
4938 const OperandVector &Operands) {
4939 int CondOp = -1, ImmOp = -1;
4940 switch(Inst.getOpcode()) {
4942 case ARM::tBcc: CondOp = 1; ImmOp = 2; break;
4945 case ARM::t2Bcc: CondOp = 1; ImmOp = 3; break;
4947 default: llvm_unreachable("Unexpected instruction in cvtThumbBranches");
4949 // first decide whether or not the branch should be conditional
4950 // by looking at it's location relative to an IT block
4952 // inside an IT block we cannot have any conditional branches. any
4953 // such instructions needs to be converted to unconditional form
4954 switch(Inst.getOpcode()) {
4955 case ARM::tBcc: Inst.setOpcode(ARM::tB); break;
4956 case ARM::t2Bcc: Inst.setOpcode(ARM::t2B); break;
4959 // outside IT blocks we can only have unconditional branches with AL
4960 // condition code or conditional branches with non-AL condition code
4961 unsigned Cond = static_cast<ARMOperand &>(*Operands[CondOp]).getCondCode();
4962 switch(Inst.getOpcode()) {
4965 Inst.setOpcode(Cond == ARMCC::AL ? ARM::tB : ARM::tBcc);
4969 Inst.setOpcode(Cond == ARMCC::AL ? ARM::t2B : ARM::t2Bcc);
4974 // now decide on encoding size based on branch target range
4975 switch(Inst.getOpcode()) {
4976 // classify tB as either t2B or t1B based on range of immediate operand
4978 ARMOperand &op = static_cast<ARMOperand &>(*Operands[ImmOp]);
4979 if (!op.isSignedOffset<11, 1>() && isThumb() && hasV8MBaseline())
4980 Inst.setOpcode(ARM::t2B);
4983 // classify tBcc as either t2Bcc or t1Bcc based on range of immediate operand
4985 ARMOperand &op = static_cast<ARMOperand &>(*Operands[ImmOp]);
4986 if (!op.isSignedOffset<8, 1>() && isThumb() && hasV8MBaseline())
4987 Inst.setOpcode(ARM::t2Bcc);
4991 ((ARMOperand &)*Operands[ImmOp]).addImmOperands(Inst, 1);
4992 ((ARMOperand &)*Operands[CondOp]).addCondCodeOperands(Inst, 2);
4995 /// Parse an ARM memory expression, return false if successful else return true
4996 /// or an error. The first token must be a '[' when called.
4997 bool ARMAsmParser::parseMemory(OperandVector &Operands) {
4998 MCAsmParser &Parser = getParser();
5000 if (Parser.getTok().isNot(AsmToken::LBrac))
5001 return TokError("Token is not a Left Bracket");
5002 S = Parser.getTok().getLoc();
5003 Parser.Lex(); // Eat left bracket token.
5005 const AsmToken &BaseRegTok = Parser.getTok();
5006 int BaseRegNum = tryParseRegister();
5007 if (BaseRegNum == -1)
5008 return Error(BaseRegTok.getLoc(), "register expected");
5010 // The next token must either be a comma, a colon or a closing bracket.
5011 const AsmToken &Tok = Parser.getTok();
5012 if (!Tok.is(AsmToken::Colon) && !Tok.is(AsmToken::Comma) &&
5013 !Tok.is(AsmToken::RBrac))
5014 return Error(Tok.getLoc(), "malformed memory operand");
5016 if (Tok.is(AsmToken::RBrac)) {
5017 E = Tok.getEndLoc();
5018 Parser.Lex(); // Eat right bracket token.
5020 Operands.push_back(ARMOperand::CreateMem(BaseRegNum, nullptr, 0,
5021 ARM_AM::no_shift, 0, 0, false,
5024 // If there's a pre-indexing writeback marker, '!', just add it as a token
5025 // operand. It's rather odd, but syntactically valid.
5026 if (Parser.getTok().is(AsmToken::Exclaim)) {
5027 Operands.push_back(ARMOperand::CreateToken("!",Parser.getTok().getLoc()));
5028 Parser.Lex(); // Eat the '!'.
5034 assert((Tok.is(AsmToken::Colon) || Tok.is(AsmToken::Comma)) &&
5035 "Lost colon or comma in memory operand?!");
5036 if (Tok.is(AsmToken::Comma)) {
5037 Parser.Lex(); // Eat the comma.
5040 // If we have a ':', it's an alignment specifier.
5041 if (Parser.getTok().is(AsmToken::Colon)) {
5042 Parser.Lex(); // Eat the ':'.
5043 E = Parser.getTok().getLoc();
5044 SMLoc AlignmentLoc = Tok.getLoc();
5047 if (getParser().parseExpression(Expr))
5050 // The expression has to be a constant. Memory references with relocations
5051 // don't come through here, as they use the <label> forms of the relevant
5053 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(Expr);
5055 return Error (E, "constant expression expected");
5058 switch (CE->getValue()) {
5061 "alignment specifier must be 16, 32, 64, 128, or 256 bits");
5062 case 16: Align = 2; break;
5063 case 32: Align = 4; break;
5064 case 64: Align = 8; break;
5065 case 128: Align = 16; break;
5066 case 256: Align = 32; break;
5069 // Now we should have the closing ']'
5070 if (Parser.getTok().isNot(AsmToken::RBrac))
5071 return Error(Parser.getTok().getLoc(), "']' expected");
5072 E = Parser.getTok().getEndLoc();
5073 Parser.Lex(); // Eat right bracket token.
5075 // Don't worry about range checking the value here. That's handled by
5076 // the is*() predicates.
5077 Operands.push_back(ARMOperand::CreateMem(BaseRegNum, nullptr, 0,
5078 ARM_AM::no_shift, 0, Align,
5079 false, S, E, AlignmentLoc));
5081 // If there's a pre-indexing writeback marker, '!', just add it as a token
5083 if (Parser.getTok().is(AsmToken::Exclaim)) {
5084 Operands.push_back(ARMOperand::CreateToken("!",Parser.getTok().getLoc()));
5085 Parser.Lex(); // Eat the '!'.
5091 // If we have a '#', it's an immediate offset, else assume it's a register
5092 // offset. Be friendly and also accept a plain integer (without a leading
5093 // hash) for gas compatibility.
5094 if (Parser.getTok().is(AsmToken::Hash) ||
5095 Parser.getTok().is(AsmToken::Dollar) ||
5096 Parser.getTok().is(AsmToken::Integer)) {
5097 if (Parser.getTok().isNot(AsmToken::Integer))
5098 Parser.Lex(); // Eat '#' or '$'.
5099 E = Parser.getTok().getLoc();
5101 bool isNegative = getParser().getTok().is(AsmToken::Minus);
5102 const MCExpr *Offset;
5103 if (getParser().parseExpression(Offset))
5106 // The expression has to be a constant. Memory references with relocations
5107 // don't come through here, as they use the <label> forms of the relevant
5109 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(Offset);
5111 return Error (E, "constant expression expected");
5113 // If the constant was #-0, represent it as INT32_MIN.
5114 int32_t Val = CE->getValue();
5115 if (isNegative && Val == 0)
5116 CE = MCConstantExpr::create(INT32_MIN, getContext());
5118 // Now we should have the closing ']'
5119 if (Parser.getTok().isNot(AsmToken::RBrac))
5120 return Error(Parser.getTok().getLoc(), "']' expected");
5121 E = Parser.getTok().getEndLoc();
5122 Parser.Lex(); // Eat right bracket token.
5124 // Don't worry about range checking the value here. That's handled by
5125 // the is*() predicates.
5126 Operands.push_back(ARMOperand::CreateMem(BaseRegNum, CE, 0,
5127 ARM_AM::no_shift, 0, 0,
5130 // If there's a pre-indexing writeback marker, '!', just add it as a token
5132 if (Parser.getTok().is(AsmToken::Exclaim)) {
5133 Operands.push_back(ARMOperand::CreateToken("!",Parser.getTok().getLoc()));
5134 Parser.Lex(); // Eat the '!'.
5140 // The register offset is optionally preceded by a '+' or '-'
5141 bool isNegative = false;
5142 if (Parser.getTok().is(AsmToken::Minus)) {
5144 Parser.Lex(); // Eat the '-'.
5145 } else if (Parser.getTok().is(AsmToken::Plus)) {
5147 Parser.Lex(); // Eat the '+'.
5150 E = Parser.getTok().getLoc();
5151 int OffsetRegNum = tryParseRegister();
5152 if (OffsetRegNum == -1)
5153 return Error(E, "register expected");
5155 // If there's a shift operator, handle it.
5156 ARM_AM::ShiftOpc ShiftType = ARM_AM::no_shift;
5157 unsigned ShiftImm = 0;
5158 if (Parser.getTok().is(AsmToken::Comma)) {
5159 Parser.Lex(); // Eat the ','.
5160 if (parseMemRegOffsetShift(ShiftType, ShiftImm))
5164 // Now we should have the closing ']'
5165 if (Parser.getTok().isNot(AsmToken::RBrac))
5166 return Error(Parser.getTok().getLoc(), "']' expected");
5167 E = Parser.getTok().getEndLoc();
5168 Parser.Lex(); // Eat right bracket token.
5170 Operands.push_back(ARMOperand::CreateMem(BaseRegNum, nullptr, OffsetRegNum,
5171 ShiftType, ShiftImm, 0, isNegative,
5174 // If there's a pre-indexing writeback marker, '!', just add it as a token
5176 if (Parser.getTok().is(AsmToken::Exclaim)) {
5177 Operands.push_back(ARMOperand::CreateToken("!",Parser.getTok().getLoc()));
5178 Parser.Lex(); // Eat the '!'.
5184 /// parseMemRegOffsetShift - one of these two:
5185 /// ( lsl | lsr | asr | ror ) , # shift_amount
5187 /// return true if it parses a shift otherwise it returns false.
5188 bool ARMAsmParser::parseMemRegOffsetShift(ARM_AM::ShiftOpc &St,
5190 MCAsmParser &Parser = getParser();
5191 SMLoc Loc = Parser.getTok().getLoc();
5192 const AsmToken &Tok = Parser.getTok();
5193 if (Tok.isNot(AsmToken::Identifier))
5195 StringRef ShiftName = Tok.getString();
5196 if (ShiftName == "lsl" || ShiftName == "LSL" ||
5197 ShiftName == "asl" || ShiftName == "ASL")
5199 else if (ShiftName == "lsr" || ShiftName == "LSR")
5201 else if (ShiftName == "asr" || ShiftName == "ASR")
5203 else if (ShiftName == "ror" || ShiftName == "ROR")
5205 else if (ShiftName == "rrx" || ShiftName == "RRX")
5208 return Error(Loc, "illegal shift operator");
5209 Parser.Lex(); // Eat shift type token.
5211 // rrx stands alone.
5213 if (St != ARM_AM::rrx) {
5214 Loc = Parser.getTok().getLoc();
5215 // A '#' and a shift amount.
5216 const AsmToken &HashTok = Parser.getTok();
5217 if (HashTok.isNot(AsmToken::Hash) &&
5218 HashTok.isNot(AsmToken::Dollar))
5219 return Error(HashTok.getLoc(), "'#' expected");
5220 Parser.Lex(); // Eat hash token.
5223 if (getParser().parseExpression(Expr))
5225 // Range check the immediate.
5226 // lsl, ror: 0 <= imm <= 31
5227 // lsr, asr: 0 <= imm <= 32
5228 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(Expr);
5230 return Error(Loc, "shift amount must be an immediate");
5231 int64_t Imm = CE->getValue();
5233 ((St == ARM_AM::lsl || St == ARM_AM::ror) && Imm > 31) ||
5234 ((St == ARM_AM::lsr || St == ARM_AM::asr) && Imm > 32))
5235 return Error(Loc, "immediate shift value out of range");
5236 // If <ShiftTy> #0, turn it into a no_shift.
5239 // For consistency, treat lsr #32 and asr #32 as having immediate value 0.
5248 /// parseFPImm - A floating point immediate expression operand.
5249 OperandMatchResultTy
5250 ARMAsmParser::parseFPImm(OperandVector &Operands) {
5251 MCAsmParser &Parser = getParser();
5252 // Anything that can accept a floating point constant as an operand
5253 // needs to go through here, as the regular parseExpression is
5256 // This routine still creates a generic Immediate operand, containing
5257 // a bitcast of the 64-bit floating point value. The various operands
5258 // that accept floats can check whether the value is valid for them
5259 // via the standard is*() predicates.
5261 SMLoc S = Parser.getTok().getLoc();
5263 if (Parser.getTok().isNot(AsmToken::Hash) &&
5264 Parser.getTok().isNot(AsmToken::Dollar))
5265 return MatchOperand_NoMatch;
5267 // Disambiguate the VMOV forms that can accept an FP immediate.
5268 // vmov.f32 <sreg>, #imm
5269 // vmov.f64 <dreg>, #imm
5270 // vmov.f32 <dreg>, #imm @ vector f32x2
5271 // vmov.f32 <qreg>, #imm @ vector f32x4
5273 // There are also the NEON VMOV instructions which expect an
5274 // integer constant. Make sure we don't try to parse an FPImm
5276 // vmov.i{8|16|32|64} <dreg|qreg>, #imm
5277 ARMOperand &TyOp = static_cast<ARMOperand &>(*Operands[2]);
5278 bool isVmovf = TyOp.isToken() &&
5279 (TyOp.getToken() == ".f32" || TyOp.getToken() == ".f64" ||
5280 TyOp.getToken() == ".f16");
5281 ARMOperand &Mnemonic = static_cast<ARMOperand &>(*Operands[0]);
5282 bool isFconst = Mnemonic.isToken() && (Mnemonic.getToken() == "fconstd" ||
5283 Mnemonic.getToken() == "fconsts");
5284 if (!(isVmovf || isFconst))
5285 return MatchOperand_NoMatch;
5287 Parser.Lex(); // Eat '#' or '$'.
5289 // Handle negation, as that still comes through as a separate token.
5290 bool isNegative = false;
5291 if (Parser.getTok().is(AsmToken::Minus)) {
5295 const AsmToken &Tok = Parser.getTok();
5296 SMLoc Loc = Tok.getLoc();
5297 if (Tok.is(AsmToken::Real) && isVmovf) {
5298 APFloat RealVal(APFloat::IEEEsingle(), Tok.getString());
5299 uint64_t IntVal = RealVal.bitcastToAPInt().getZExtValue();
5300 // If we had a '-' in front, toggle the sign bit.
5301 IntVal ^= (uint64_t)isNegative << 31;
5302 Parser.Lex(); // Eat the token.
5303 Operands.push_back(ARMOperand::CreateImm(
5304 MCConstantExpr::create(IntVal, getContext()),
5305 S, Parser.getTok().getLoc()));
5306 return MatchOperand_Success;
5308 // Also handle plain integers. Instructions which allow floating point
5309 // immediates also allow a raw encoded 8-bit value.
5310 if (Tok.is(AsmToken::Integer) && isFconst) {
5311 int64_t Val = Tok.getIntVal();
5312 Parser.Lex(); // Eat the token.
5313 if (Val > 255 || Val < 0) {
5314 Error(Loc, "encoded floating point value out of range");
5315 return MatchOperand_ParseFail;
5317 float RealVal = ARM_AM::getFPImmFloat(Val);
5318 Val = APFloat(RealVal).bitcastToAPInt().getZExtValue();
5320 Operands.push_back(ARMOperand::CreateImm(
5321 MCConstantExpr::create(Val, getContext()), S,
5322 Parser.getTok().getLoc()));
5323 return MatchOperand_Success;
5326 Error(Loc, "invalid floating point immediate");
5327 return MatchOperand_ParseFail;
5330 /// Parse a arm instruction operand. For now this parses the operand regardless
5331 /// of the mnemonic.
5332 bool ARMAsmParser::parseOperand(OperandVector &Operands, StringRef Mnemonic) {
5333 MCAsmParser &Parser = getParser();
5336 // Check if the current operand has a custom associated parser, if so, try to
5337 // custom parse the operand, or fallback to the general approach.
5338 OperandMatchResultTy ResTy = MatchOperandParserImpl(Operands, Mnemonic);
5339 if (ResTy == MatchOperand_Success)
5341 // If there wasn't a custom match, try the generic matcher below. Otherwise,
5342 // there was a match, but an error occurred, in which case, just return that
5343 // the operand parsing failed.
5344 if (ResTy == MatchOperand_ParseFail)
5347 switch (getLexer().getKind()) {
5349 Error(Parser.getTok().getLoc(), "unexpected token in operand");
5351 case AsmToken::Identifier: {
5352 // If we've seen a branch mnemonic, the next operand must be a label. This
5353 // is true even if the label is a register name. So "br r1" means branch to
5355 bool ExpectLabel = Mnemonic == "b" || Mnemonic == "bl";
5357 if (!tryParseRegisterWithWriteBack(Operands))
5359 int Res = tryParseShiftRegister(Operands);
5360 if (Res == 0) // success
5362 else if (Res == -1) // irrecoverable error
5364 // If this is VMRS, check for the apsr_nzcv operand.
5365 if (Mnemonic == "vmrs" &&
5366 Parser.getTok().getString().equals_lower("apsr_nzcv")) {
5367 S = Parser.getTok().getLoc();
5369 Operands.push_back(ARMOperand::CreateToken("APSR_nzcv", S));
5374 // Fall though for the Identifier case that is not a register or a
5377 case AsmToken::LParen: // parenthesized expressions like (_strcmp-4)
5378 case AsmToken::Integer: // things like 1f and 2b as a branch targets
5379 case AsmToken::String: // quoted label names.
5380 case AsmToken::Dot: { // . as a branch target
5381 // This was not a register so parse other operands that start with an
5382 // identifier (like labels) as expressions and create them as immediates.
5383 const MCExpr *IdVal;
5384 S = Parser.getTok().getLoc();
5385 if (getParser().parseExpression(IdVal))
5387 E = SMLoc::getFromPointer(Parser.getTok().getLoc().getPointer() - 1);
5388 Operands.push_back(ARMOperand::CreateImm(IdVal, S, E));
5391 case AsmToken::LBrac:
5392 return parseMemory(Operands);
5393 case AsmToken::LCurly:
5394 return parseRegisterList(Operands);
5395 case AsmToken::Dollar:
5396 case AsmToken::Hash: {
5397 // #42 -> immediate.
5398 S = Parser.getTok().getLoc();
5401 if (Parser.getTok().isNot(AsmToken::Colon)) {
5402 bool isNegative = Parser.getTok().is(AsmToken::Minus);
5403 const MCExpr *ImmVal;
5404 if (getParser().parseExpression(ImmVal))
5406 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(ImmVal);
5408 int32_t Val = CE->getValue();
5409 if (isNegative && Val == 0)
5410 ImmVal = MCConstantExpr::create(INT32_MIN, getContext());
5412 E = SMLoc::getFromPointer(Parser.getTok().getLoc().getPointer() - 1);
5413 Operands.push_back(ARMOperand::CreateImm(ImmVal, S, E));
5415 // There can be a trailing '!' on operands that we want as a separate
5416 // '!' Token operand. Handle that here. For example, the compatibility
5417 // alias for 'srsdb sp!, #imm' is 'srsdb #imm!'.
5418 if (Parser.getTok().is(AsmToken::Exclaim)) {
5419 Operands.push_back(ARMOperand::CreateToken(Parser.getTok().getString(),
5420 Parser.getTok().getLoc()));
5421 Parser.Lex(); // Eat exclaim token
5425 // w/ a ':' after the '#', it's just like a plain ':'.
5428 case AsmToken::Colon: {
5429 S = Parser.getTok().getLoc();
5430 // ":lower16:" and ":upper16:" expression prefixes
5431 // FIXME: Check it's an expression prefix,
5432 // e.g. (FOO - :lower16:BAR) isn't legal.
5433 ARMMCExpr::VariantKind RefKind;
5434 if (parsePrefix(RefKind))
5437 const MCExpr *SubExprVal;
5438 if (getParser().parseExpression(SubExprVal))
5441 const MCExpr *ExprVal = ARMMCExpr::create(RefKind, SubExprVal,
5443 E = SMLoc::getFromPointer(Parser.getTok().getLoc().getPointer() - 1);
5444 Operands.push_back(ARMOperand::CreateImm(ExprVal, S, E));
5447 case AsmToken::Equal: {
5448 S = Parser.getTok().getLoc();
5449 if (Mnemonic != "ldr") // only parse for ldr pseudo (e.g. ldr r0, =val)
5450 return Error(S, "unexpected token in operand");
5451 Parser.Lex(); // Eat '='
5452 const MCExpr *SubExprVal;
5453 if (getParser().parseExpression(SubExprVal))
5455 E = SMLoc::getFromPointer(Parser.getTok().getLoc().getPointer() - 1);
5457 // execute-only: we assume that assembly programmers know what they are
5458 // doing and allow literal pool creation here
5459 Operands.push_back(ARMOperand::CreateConstantPoolImm(SubExprVal, S, E));
5465 // parsePrefix - Parse ARM 16-bit relocations expression prefix, i.e.
5466 // :lower16: and :upper16:.
5467 bool ARMAsmParser::parsePrefix(ARMMCExpr::VariantKind &RefKind) {
5468 MCAsmParser &Parser = getParser();
5469 RefKind = ARMMCExpr::VK_ARM_None;
5471 // consume an optional '#' (GNU compatibility)
5472 if (getLexer().is(AsmToken::Hash))
5475 // :lower16: and :upper16: modifiers
5476 assert(getLexer().is(AsmToken::Colon) && "expected a :");
5477 Parser.Lex(); // Eat ':'
5479 if (getLexer().isNot(AsmToken::Identifier)) {
5480 Error(Parser.getTok().getLoc(), "expected prefix identifier in operand");
5485 COFF = (1 << MCObjectFileInfo::IsCOFF),
5486 ELF = (1 << MCObjectFileInfo::IsELF),
5487 MACHO = (1 << MCObjectFileInfo::IsMachO)
5489 static const struct PrefixEntry {
5490 const char *Spelling;
5491 ARMMCExpr::VariantKind VariantKind;
5492 uint8_t SupportedFormats;
5493 } PrefixEntries[] = {
5494 { "lower16", ARMMCExpr::VK_ARM_LO16, COFF | ELF | MACHO },
5495 { "upper16", ARMMCExpr::VK_ARM_HI16, COFF | ELF | MACHO },
5498 StringRef IDVal = Parser.getTok().getIdentifier();
5500 const auto &Prefix =
5501 std::find_if(std::begin(PrefixEntries), std::end(PrefixEntries),
5502 [&IDVal](const PrefixEntry &PE) {
5503 return PE.Spelling == IDVal;
5505 if (Prefix == std::end(PrefixEntries)) {
5506 Error(Parser.getTok().getLoc(), "unexpected prefix in operand");
5510 uint8_t CurrentFormat;
5511 switch (getContext().getObjectFileInfo()->getObjectFileType()) {
5512 case MCObjectFileInfo::IsMachO:
5513 CurrentFormat = MACHO;
5515 case MCObjectFileInfo::IsELF:
5516 CurrentFormat = ELF;
5518 case MCObjectFileInfo::IsCOFF:
5519 CurrentFormat = COFF;
5523 if (~Prefix->SupportedFormats & CurrentFormat) {
5524 Error(Parser.getTok().getLoc(),
5525 "cannot represent relocation in the current file format");
5529 RefKind = Prefix->VariantKind;
5532 if (getLexer().isNot(AsmToken::Colon)) {
5533 Error(Parser.getTok().getLoc(), "unexpected token after prefix");
5536 Parser.Lex(); // Eat the last ':'
5541 /// \brief Given a mnemonic, split out possible predication code and carry
5542 /// setting letters to form a canonical mnemonic and flags.
5544 // FIXME: Would be nice to autogen this.
5545 // FIXME: This is a bit of a maze of special cases.
5546 StringRef ARMAsmParser::splitMnemonic(StringRef Mnemonic,
5547 unsigned &PredicationCode,
5549 unsigned &ProcessorIMod,
5550 StringRef &ITMask) {
5551 PredicationCode = ARMCC::AL;
5552 CarrySetting = false;
5555 // Ignore some mnemonics we know aren't predicated forms.
5557 // FIXME: Would be nice to autogen this.
5558 if ((Mnemonic == "movs" && isThumb()) ||
5559 Mnemonic == "teq" || Mnemonic == "vceq" || Mnemonic == "svc" ||
5560 Mnemonic == "mls" || Mnemonic == "smmls" || Mnemonic == "vcls" ||
5561 Mnemonic == "vmls" || Mnemonic == "vnmls" || Mnemonic == "vacge" ||
5562 Mnemonic == "vcge" || Mnemonic == "vclt" || Mnemonic == "vacgt" ||
5563 Mnemonic == "vaclt" || Mnemonic == "vacle" || Mnemonic == "hlt" ||
5564 Mnemonic == "vcgt" || Mnemonic == "vcle" || Mnemonic == "smlal" ||
5565 Mnemonic == "umaal" || Mnemonic == "umlal" || Mnemonic == "vabal" ||
5566 Mnemonic == "vmlal" || Mnemonic == "vpadal" || Mnemonic == "vqdmlal" ||
5567 Mnemonic == "fmuls" || Mnemonic == "vmaxnm" || Mnemonic == "vminnm" ||
5568 Mnemonic == "vcvta" || Mnemonic == "vcvtn" || Mnemonic == "vcvtp" ||
5569 Mnemonic == "vcvtm" || Mnemonic == "vrinta" || Mnemonic == "vrintn" ||
5570 Mnemonic == "vrintp" || Mnemonic == "vrintm" || Mnemonic == "hvc" ||
5571 Mnemonic.startswith("vsel") || Mnemonic == "vins" || Mnemonic == "vmovx" ||
5572 Mnemonic == "bxns" || Mnemonic == "blxns")
5575 // First, split out any predication code. Ignore mnemonics we know aren't
5576 // predicated but do have a carry-set and so weren't caught above.
5577 if (Mnemonic != "adcs" && Mnemonic != "bics" && Mnemonic != "movs" &&
5578 Mnemonic != "muls" && Mnemonic != "smlals" && Mnemonic != "smulls" &&
5579 Mnemonic != "umlals" && Mnemonic != "umulls" && Mnemonic != "lsls" &&
5580 Mnemonic != "sbcs" && Mnemonic != "rscs") {
5581 unsigned CC = StringSwitch<unsigned>(Mnemonic.substr(Mnemonic.size()-2))
5582 .Case("eq", ARMCC::EQ)
5583 .Case("ne", ARMCC::NE)
5584 .Case("hs", ARMCC::HS)
5585 .Case("cs", ARMCC::HS)
5586 .Case("lo", ARMCC::LO)
5587 .Case("cc", ARMCC::LO)
5588 .Case("mi", ARMCC::MI)
5589 .Case("pl", ARMCC::PL)
5590 .Case("vs", ARMCC::VS)
5591 .Case("vc", ARMCC::VC)
5592 .Case("hi", ARMCC::HI)
5593 .Case("ls", ARMCC::LS)
5594 .Case("ge", ARMCC::GE)
5595 .Case("lt", ARMCC::LT)
5596 .Case("gt", ARMCC::GT)
5597 .Case("le", ARMCC::LE)
5598 .Case("al", ARMCC::AL)
5601 Mnemonic = Mnemonic.slice(0, Mnemonic.size() - 2);
5602 PredicationCode = CC;
5606 // Next, determine if we have a carry setting bit. We explicitly ignore all
5607 // the instructions we know end in 's'.
5608 if (Mnemonic.endswith("s") &&
5609 !(Mnemonic == "cps" || Mnemonic == "mls" ||
5610 Mnemonic == "mrs" || Mnemonic == "smmls" || Mnemonic == "vabs" ||
5611 Mnemonic == "vcls" || Mnemonic == "vmls" || Mnemonic == "vmrs" ||
5612 Mnemonic == "vnmls" || Mnemonic == "vqabs" || Mnemonic == "vrecps" ||
5613 Mnemonic == "vrsqrts" || Mnemonic == "srs" || Mnemonic == "flds" ||
5614 Mnemonic == "fmrs" || Mnemonic == "fsqrts" || Mnemonic == "fsubs" ||
5615 Mnemonic == "fsts" || Mnemonic == "fcpys" || Mnemonic == "fdivs" ||
5616 Mnemonic == "fmuls" || Mnemonic == "fcmps" || Mnemonic == "fcmpzs" ||
5617 Mnemonic == "vfms" || Mnemonic == "vfnms" || Mnemonic == "fconsts" ||
5618 Mnemonic == "bxns" || Mnemonic == "blxns" ||
5619 (Mnemonic == "movs" && isThumb()))) {
5620 Mnemonic = Mnemonic.slice(0, Mnemonic.size() - 1);
5621 CarrySetting = true;
5624 // The "cps" instruction can have a interrupt mode operand which is glued into
5625 // the mnemonic. Check if this is the case, split it and parse the imod op
5626 if (Mnemonic.startswith("cps")) {
5627 // Split out any imod code.
5629 StringSwitch<unsigned>(Mnemonic.substr(Mnemonic.size()-2, 2))
5630 .Case("ie", ARM_PROC::IE)
5631 .Case("id", ARM_PROC::ID)
5634 Mnemonic = Mnemonic.slice(0, Mnemonic.size()-2);
5635 ProcessorIMod = IMod;
5639 // The "it" instruction has the condition mask on the end of the mnemonic.
5640 if (Mnemonic.startswith("it")) {
5641 ITMask = Mnemonic.slice(2, Mnemonic.size());
5642 Mnemonic = Mnemonic.slice(0, 2);
5648 /// \brief Given a canonical mnemonic, determine if the instruction ever allows
5649 /// inclusion of carry set or predication code operands.
5651 // FIXME: It would be nice to autogen this.
5652 void ARMAsmParser::getMnemonicAcceptInfo(StringRef Mnemonic, StringRef FullInst,
5653 bool &CanAcceptCarrySet,
5654 bool &CanAcceptPredicationCode) {
5656 Mnemonic == "and" || Mnemonic == "lsl" || Mnemonic == "lsr" ||
5657 Mnemonic == "rrx" || Mnemonic == "ror" || Mnemonic == "sub" ||
5658 Mnemonic == "add" || Mnemonic == "adc" || Mnemonic == "mul" ||
5659 Mnemonic == "bic" || Mnemonic == "asr" || Mnemonic == "orr" ||
5660 Mnemonic == "mvn" || Mnemonic == "rsb" || Mnemonic == "rsc" ||
5661 Mnemonic == "orn" || Mnemonic == "sbc" || Mnemonic == "eor" ||
5662 Mnemonic == "neg" || Mnemonic == "vfm" || Mnemonic == "vfnm" ||
5664 (Mnemonic == "smull" || Mnemonic == "mov" || Mnemonic == "mla" ||
5665 Mnemonic == "smlal" || Mnemonic == "umlal" || Mnemonic == "umull"));
5667 if (Mnemonic == "bkpt" || Mnemonic == "cbnz" || Mnemonic == "setend" ||
5668 Mnemonic == "cps" || Mnemonic == "it" || Mnemonic == "cbz" ||
5669 Mnemonic == "trap" || Mnemonic == "hlt" || Mnemonic == "udf" ||
5670 Mnemonic.startswith("crc32") || Mnemonic.startswith("cps") ||
5671 Mnemonic.startswith("vsel") || Mnemonic == "vmaxnm" ||
5672 Mnemonic == "vminnm" || Mnemonic == "vcvta" || Mnemonic == "vcvtn" ||
5673 Mnemonic == "vcvtp" || Mnemonic == "vcvtm" || Mnemonic == "vrinta" ||
5674 Mnemonic == "vrintn" || Mnemonic == "vrintp" || Mnemonic == "vrintm" ||
5675 Mnemonic.startswith("aes") || Mnemonic == "hvc" || Mnemonic == "setpan" ||
5676 Mnemonic.startswith("sha1") || Mnemonic.startswith("sha256") ||
5677 (FullInst.startswith("vmull") && FullInst.endswith(".p64")) ||
5678 Mnemonic == "vmovx" || Mnemonic == "vins") {
5679 // These mnemonics are never predicable
5680 CanAcceptPredicationCode = false;
5681 } else if (!isThumb()) {
5682 // Some instructions are only predicable in Thumb mode
5683 CanAcceptPredicationCode =
5684 Mnemonic != "cdp2" && Mnemonic != "clrex" && Mnemonic != "mcr2" &&
5685 Mnemonic != "mcrr2" && Mnemonic != "mrc2" && Mnemonic != "mrrc2" &&
5686 Mnemonic != "dmb" && Mnemonic != "dsb" && Mnemonic != "isb" &&
5687 Mnemonic != "pld" && Mnemonic != "pli" && Mnemonic != "pldw" &&
5688 Mnemonic != "ldc2" && Mnemonic != "ldc2l" && Mnemonic != "stc2" &&
5689 Mnemonic != "stc2l" && !Mnemonic.startswith("rfe") &&
5690 !Mnemonic.startswith("srs");
5691 } else if (isThumbOne()) {
5693 CanAcceptPredicationCode = Mnemonic != "movs";
5695 CanAcceptPredicationCode = Mnemonic != "nop" && Mnemonic != "movs";
5697 CanAcceptPredicationCode = true;
5700 // \brief Some Thumb instructions have two operand forms that are not
5701 // available as three operand, convert to two operand form if possible.
5703 // FIXME: We would really like to be able to tablegen'erate this.
5704 void ARMAsmParser::tryConvertingToTwoOperandForm(StringRef Mnemonic,
5706 OperandVector &Operands) {
5707 if (Operands.size() != 6)
5710 const auto &Op3 = static_cast<ARMOperand &>(*Operands[3]);
5711 auto &Op4 = static_cast<ARMOperand &>(*Operands[4]);
5712 if (!Op3.isReg() || !Op4.isReg())
5715 auto Op3Reg = Op3.getReg();
5716 auto Op4Reg = Op4.getReg();
5718 // For most Thumb2 cases we just generate the 3 operand form and reduce
5719 // it in processInstruction(), but the 3 operand form of ADD (t2ADDrr)
5720 // won't accept SP or PC so we do the transformation here taking care
5721 // with immediate range in the 'add sp, sp #imm' case.
5722 auto &Op5 = static_cast<ARMOperand &>(*Operands[5]);
5724 if (Mnemonic != "add")
5726 bool TryTransform = Op3Reg == ARM::PC || Op4Reg == ARM::PC ||
5727 (Op5.isReg() && Op5.getReg() == ARM::PC);
5728 if (!TryTransform) {
5729 TryTransform = (Op3Reg == ARM::SP || Op4Reg == ARM::SP ||
5730 (Op5.isReg() && Op5.getReg() == ARM::SP)) &&
5731 !(Op3Reg == ARM::SP && Op4Reg == ARM::SP &&
5732 Op5.isImm() && !Op5.isImm0_508s4());
5736 } else if (!isThumbOne())
5739 if (!(Mnemonic == "add" || Mnemonic == "sub" || Mnemonic == "and" ||
5740 Mnemonic == "eor" || Mnemonic == "lsl" || Mnemonic == "lsr" ||
5741 Mnemonic == "asr" || Mnemonic == "adc" || Mnemonic == "sbc" ||
5742 Mnemonic == "ror" || Mnemonic == "orr" || Mnemonic == "bic"))
5745 // If first 2 operands of a 3 operand instruction are the same
5746 // then transform to 2 operand version of the same instruction
5747 // e.g. 'adds r0, r0, #1' transforms to 'adds r0, #1'
5748 bool Transform = Op3Reg == Op4Reg;
5750 // For communtative operations, we might be able to transform if we swap
5751 // Op4 and Op5. The 'ADD Rdm, SP, Rdm' form is already handled specially
5753 const ARMOperand *LastOp = &Op5;
5755 if (!Transform && Op5.isReg() && Op3Reg == Op5.getReg() &&
5756 ((Mnemonic == "add" && Op4Reg != ARM::SP) ||
5757 Mnemonic == "and" || Mnemonic == "eor" ||
5758 Mnemonic == "adc" || Mnemonic == "orr")) {
5764 // If both registers are the same then remove one of them from
5765 // the operand list, with certain exceptions.
5767 // Don't transform 'adds Rd, Rd, Rm' or 'sub{s} Rd, Rd, Rm' because the
5768 // 2 operand forms don't exist.
5769 if (((Mnemonic == "add" && CarrySetting) || Mnemonic == "sub") &&
5773 // Don't transform 'add/sub{s} Rd, Rd, #imm' if the immediate fits into
5774 // 3-bits because the ARMARM says not to.
5775 if ((Mnemonic == "add" || Mnemonic == "sub") && LastOp->isImm0_7())
5781 std::swap(Op4, Op5);
5782 Operands.erase(Operands.begin() + 3);
5786 bool ARMAsmParser::shouldOmitCCOutOperand(StringRef Mnemonic,
5787 OperandVector &Operands) {
5788 // FIXME: This is all horribly hacky. We really need a better way to deal
5789 // with optional operands like this in the matcher table.
5791 // The 'mov' mnemonic is special. One variant has a cc_out operand, while
5792 // another does not. Specifically, the MOVW instruction does not. So we
5793 // special case it here and remove the defaulted (non-setting) cc_out
5794 // operand if that's the instruction we're trying to match.
5796 // We do this as post-processing of the explicit operands rather than just
5797 // conditionally adding the cc_out in the first place because we need
5798 // to check the type of the parsed immediate operand.
5799 if (Mnemonic == "mov" && Operands.size() > 4 && !isThumb() &&
5800 !static_cast<ARMOperand &>(*Operands[4]).isModImm() &&
5801 static_cast<ARMOperand &>(*Operands[4]).isImm0_65535Expr() &&
5802 static_cast<ARMOperand &>(*Operands[1]).getReg() == 0)
5805 // Register-register 'add' for thumb does not have a cc_out operand
5806 // when there are only two register operands.
5807 if (isThumb() && Mnemonic == "add" && Operands.size() == 5 &&
5808 static_cast<ARMOperand &>(*Operands[3]).isReg() &&
5809 static_cast<ARMOperand &>(*Operands[4]).isReg() &&
5810 static_cast<ARMOperand &>(*Operands[1]).getReg() == 0)
5812 // Register-register 'add' for thumb does not have a cc_out operand
5813 // when it's an ADD Rdm, SP, {Rdm|#imm0_255} instruction. We do
5814 // have to check the immediate range here since Thumb2 has a variant
5815 // that can handle a different range and has a cc_out operand.
5816 if (((isThumb() && Mnemonic == "add") ||
5817 (isThumbTwo() && Mnemonic == "sub")) &&
5818 Operands.size() == 6 && static_cast<ARMOperand &>(*Operands[3]).isReg() &&
5819 static_cast<ARMOperand &>(*Operands[4]).isReg() &&
5820 static_cast<ARMOperand &>(*Operands[4]).getReg() == ARM::SP &&
5821 static_cast<ARMOperand &>(*Operands[1]).getReg() == 0 &&
5822 ((Mnemonic == "add" && static_cast<ARMOperand &>(*Operands[5]).isReg()) ||
5823 static_cast<ARMOperand &>(*Operands[5]).isImm0_1020s4()))
5825 // For Thumb2, add/sub immediate does not have a cc_out operand for the
5826 // imm0_4095 variant. That's the least-preferred variant when
5827 // selecting via the generic "add" mnemonic, so to know that we
5828 // should remove the cc_out operand, we have to explicitly check that
5829 // it's not one of the other variants. Ugh.
5830 if (isThumbTwo() && (Mnemonic == "add" || Mnemonic == "sub") &&
5831 Operands.size() == 6 && static_cast<ARMOperand &>(*Operands[3]).isReg() &&
5832 static_cast<ARMOperand &>(*Operands[4]).isReg() &&
5833 static_cast<ARMOperand &>(*Operands[5]).isImm()) {
5834 // Nest conditions rather than one big 'if' statement for readability.
5836 // If both registers are low, we're in an IT block, and the immediate is
5837 // in range, we should use encoding T1 instead, which has a cc_out.
5839 isARMLowRegister(static_cast<ARMOperand &>(*Operands[3]).getReg()) &&
5840 isARMLowRegister(static_cast<ARMOperand &>(*Operands[4]).getReg()) &&
5841 static_cast<ARMOperand &>(*Operands[5]).isImm0_7())
5843 // Check against T3. If the second register is the PC, this is an
5844 // alternate form of ADR, which uses encoding T4, so check for that too.
5845 if (static_cast<ARMOperand &>(*Operands[4]).getReg() != ARM::PC &&
5846 static_cast<ARMOperand &>(*Operands[5]).isT2SOImm())
5849 // Otherwise, we use encoding T4, which does not have a cc_out
5854 // The thumb2 multiply instruction doesn't have a CCOut register, so
5855 // if we have a "mul" mnemonic in Thumb mode, check if we'll be able to
5856 // use the 16-bit encoding or not.
5857 if (isThumbTwo() && Mnemonic == "mul" && Operands.size() == 6 &&
5858 static_cast<ARMOperand &>(*Operands[1]).getReg() == 0 &&
5859 static_cast<ARMOperand &>(*Operands[3]).isReg() &&
5860 static_cast<ARMOperand &>(*Operands[4]).isReg() &&
5861 static_cast<ARMOperand &>(*Operands[5]).isReg() &&
5862 // If the registers aren't low regs, the destination reg isn't the
5863 // same as one of the source regs, or the cc_out operand is zero
5864 // outside of an IT block, we have to use the 32-bit encoding, so
5865 // remove the cc_out operand.
5866 (!isARMLowRegister(static_cast<ARMOperand &>(*Operands[3]).getReg()) ||
5867 !isARMLowRegister(static_cast<ARMOperand &>(*Operands[4]).getReg()) ||
5868 !isARMLowRegister(static_cast<ARMOperand &>(*Operands[5]).getReg()) ||
5869 !inITBlock() || (static_cast<ARMOperand &>(*Operands[3]).getReg() !=
5870 static_cast<ARMOperand &>(*Operands[5]).getReg() &&
5871 static_cast<ARMOperand &>(*Operands[3]).getReg() !=
5872 static_cast<ARMOperand &>(*Operands[4]).getReg())))
5875 // Also check the 'mul' syntax variant that doesn't specify an explicit
5876 // destination register.
5877 if (isThumbTwo() && Mnemonic == "mul" && Operands.size() == 5 &&
5878 static_cast<ARMOperand &>(*Operands[1]).getReg() == 0 &&
5879 static_cast<ARMOperand &>(*Operands[3]).isReg() &&
5880 static_cast<ARMOperand &>(*Operands[4]).isReg() &&
5881 // If the registers aren't low regs or the cc_out operand is zero
5882 // outside of an IT block, we have to use the 32-bit encoding, so
5883 // remove the cc_out operand.
5884 (!isARMLowRegister(static_cast<ARMOperand &>(*Operands[3]).getReg()) ||
5885 !isARMLowRegister(static_cast<ARMOperand &>(*Operands[4]).getReg()) ||
5891 // Register-register 'add/sub' for thumb does not have a cc_out operand
5892 // when it's an ADD/SUB SP, #imm. Be lenient on count since there's also
5893 // the "add/sub SP, SP, #imm" version. If the follow-up operands aren't
5894 // right, this will result in better diagnostics (which operand is off)
5896 if (isThumb() && (Mnemonic == "add" || Mnemonic == "sub") &&
5897 (Operands.size() == 5 || Operands.size() == 6) &&
5898 static_cast<ARMOperand &>(*Operands[3]).isReg() &&
5899 static_cast<ARMOperand &>(*Operands[3]).getReg() == ARM::SP &&
5900 static_cast<ARMOperand &>(*Operands[1]).getReg() == 0 &&
5901 (static_cast<ARMOperand &>(*Operands[4]).isImm() ||
5902 (Operands.size() == 6 &&
5903 static_cast<ARMOperand &>(*Operands[5]).isImm())))
5909 bool ARMAsmParser::shouldOmitPredicateOperand(StringRef Mnemonic,
5910 OperandVector &Operands) {
5911 // VRINT{Z, R, X} have a predicate operand in VFP, but not in NEON
5912 unsigned RegIdx = 3;
5913 if ((Mnemonic == "vrintz" || Mnemonic == "vrintx" || Mnemonic == "vrintr") &&
5914 (static_cast<ARMOperand &>(*Operands[2]).getToken() == ".f32" ||
5915 static_cast<ARMOperand &>(*Operands[2]).getToken() == ".f16")) {
5916 if (static_cast<ARMOperand &>(*Operands[3]).isToken() &&
5917 (static_cast<ARMOperand &>(*Operands[3]).getToken() == ".f32" ||
5918 static_cast<ARMOperand &>(*Operands[3]).getToken() == ".f16"))
5921 if (static_cast<ARMOperand &>(*Operands[RegIdx]).isReg() &&
5922 (ARMMCRegisterClasses[ARM::DPRRegClassID].contains(
5923 static_cast<ARMOperand &>(*Operands[RegIdx]).getReg()) ||
5924 ARMMCRegisterClasses[ARM::QPRRegClassID].contains(
5925 static_cast<ARMOperand &>(*Operands[RegIdx]).getReg())))
5931 static bool isDataTypeToken(StringRef Tok) {
5932 return Tok == ".8" || Tok == ".16" || Tok == ".32" || Tok == ".64" ||
5933 Tok == ".i8" || Tok == ".i16" || Tok == ".i32" || Tok == ".i64" ||
5934 Tok == ".u8" || Tok == ".u16" || Tok == ".u32" || Tok == ".u64" ||
5935 Tok == ".s8" || Tok == ".s16" || Tok == ".s32" || Tok == ".s64" ||
5936 Tok == ".p8" || Tok == ".p16" || Tok == ".f32" || Tok == ".f64" ||
5937 Tok == ".f" || Tok == ".d";
5940 // FIXME: This bit should probably be handled via an explicit match class
5941 // in the .td files that matches the suffix instead of having it be
5942 // a literal string token the way it is now.
5943 static bool doesIgnoreDataTypeSuffix(StringRef Mnemonic, StringRef DT) {
5944 return Mnemonic.startswith("vldm") || Mnemonic.startswith("vstm");
5946 static void applyMnemonicAliases(StringRef &Mnemonic, uint64_t Features,
5947 unsigned VariantID);
5949 static bool RequiresVFPRegListValidation(StringRef Inst,
5950 bool &AcceptSinglePrecisionOnly,
5951 bool &AcceptDoublePrecisionOnly) {
5952 if (Inst.size() < 7)
5955 if (Inst.startswith("fldm") || Inst.startswith("fstm")) {
5956 StringRef AddressingMode = Inst.substr(4, 2);
5957 if (AddressingMode == "ia" || AddressingMode == "db" ||
5958 AddressingMode == "ea" || AddressingMode == "fd") {
5959 AcceptSinglePrecisionOnly = Inst[6] == 's';
5960 AcceptDoublePrecisionOnly = Inst[6] == 'd' || Inst[6] == 'x';
5968 /// Parse an arm instruction mnemonic followed by its operands.
5969 bool ARMAsmParser::ParseInstruction(ParseInstructionInfo &Info, StringRef Name,
5970 SMLoc NameLoc, OperandVector &Operands) {
5971 MCAsmParser &Parser = getParser();
5972 // FIXME: Can this be done via tablegen in some fashion?
5973 bool RequireVFPRegisterListCheck;
5974 bool AcceptSinglePrecisionOnly;
5975 bool AcceptDoublePrecisionOnly;
5976 RequireVFPRegisterListCheck =
5977 RequiresVFPRegListValidation(Name, AcceptSinglePrecisionOnly,
5978 AcceptDoublePrecisionOnly);
5980 // Apply mnemonic aliases before doing anything else, as the destination
5981 // mnemonic may include suffices and we want to handle them normally.
5982 // The generic tblgen'erated code does this later, at the start of
5983 // MatchInstructionImpl(), but that's too late for aliases that include
5984 // any sort of suffix.
5985 uint64_t AvailableFeatures = getAvailableFeatures();
5986 unsigned AssemblerDialect = getParser().getAssemblerDialect();
5987 applyMnemonicAliases(Name, AvailableFeatures, AssemblerDialect);
5989 // First check for the ARM-specific .req directive.
5990 if (Parser.getTok().is(AsmToken::Identifier) &&
5991 Parser.getTok().getIdentifier() == ".req") {
5992 parseDirectiveReq(Name, NameLoc);
5993 // We always return 'error' for this, as we're done with this
5994 // statement and don't need to match the 'instruction."
5998 // Create the leading tokens for the mnemonic, split by '.' characters.
5999 size_t Start = 0, Next = Name.find('.');
6000 StringRef Mnemonic = Name.slice(Start, Next);
6002 // Split out the predication code and carry setting flag from the mnemonic.
6003 unsigned PredicationCode;
6004 unsigned ProcessorIMod;
6007 Mnemonic = splitMnemonic(Mnemonic, PredicationCode, CarrySetting,
6008 ProcessorIMod, ITMask);
6010 // In Thumb1, only the branch (B) instruction can be predicated.
6011 if (isThumbOne() && PredicationCode != ARMCC::AL && Mnemonic != "b") {
6012 return Error(NameLoc, "conditional execution not supported in Thumb1");
6015 Operands.push_back(ARMOperand::CreateToken(Mnemonic, NameLoc));
6017 // Handle the IT instruction ITMask. Convert it to a bitmask. This
6018 // is the mask as it will be for the IT encoding if the conditional
6019 // encoding has a '1' as it's bit0 (i.e. 't' ==> '1'). In the case
6020 // where the conditional bit0 is zero, the instruction post-processing
6021 // will adjust the mask accordingly.
6022 if (Mnemonic == "it") {
6023 SMLoc Loc = SMLoc::getFromPointer(NameLoc.getPointer() + 2);
6024 if (ITMask.size() > 3) {
6025 return Error(Loc, "too many conditions on IT instruction");
6028 for (unsigned i = ITMask.size(); i != 0; --i) {
6029 char pos = ITMask[i - 1];
6030 if (pos != 't' && pos != 'e') {
6031 return Error(Loc, "illegal IT block condition mask '" + ITMask + "'");
6034 if (ITMask[i - 1] == 't')
6037 Operands.push_back(ARMOperand::CreateITMask(Mask, Loc));
6040 // FIXME: This is all a pretty gross hack. We should automatically handle
6041 // optional operands like this via tblgen.
6043 // Next, add the CCOut and ConditionCode operands, if needed.
6045 // For mnemonics which can ever incorporate a carry setting bit or predication
6046 // code, our matching model involves us always generating CCOut and
6047 // ConditionCode operands to match the mnemonic "as written" and then we let
6048 // the matcher deal with finding the right instruction or generating an
6049 // appropriate error.
6050 bool CanAcceptCarrySet, CanAcceptPredicationCode;
6051 getMnemonicAcceptInfo(Mnemonic, Name, CanAcceptCarrySet, CanAcceptPredicationCode);
6053 // If we had a carry-set on an instruction that can't do that, issue an
6055 if (!CanAcceptCarrySet && CarrySetting) {
6056 return Error(NameLoc, "instruction '" + Mnemonic +
6057 "' can not set flags, but 's' suffix specified");
6059 // If we had a predication code on an instruction that can't do that, issue an
6061 if (!CanAcceptPredicationCode && PredicationCode != ARMCC::AL) {
6062 return Error(NameLoc, "instruction '" + Mnemonic +
6063 "' is not predicable, but condition code specified");
6066 // Add the carry setting operand, if necessary.
6067 if (CanAcceptCarrySet) {
6068 SMLoc Loc = SMLoc::getFromPointer(NameLoc.getPointer() + Mnemonic.size());
6069 Operands.push_back(ARMOperand::CreateCCOut(CarrySetting ? ARM::CPSR : 0,
6073 // Add the predication code operand, if necessary.
6074 if (CanAcceptPredicationCode) {
6075 SMLoc Loc = SMLoc::getFromPointer(NameLoc.getPointer() + Mnemonic.size() +
6077 Operands.push_back(ARMOperand::CreateCondCode(
6078 ARMCC::CondCodes(PredicationCode), Loc));
6081 // Add the processor imod operand, if necessary.
6082 if (ProcessorIMod) {
6083 Operands.push_back(ARMOperand::CreateImm(
6084 MCConstantExpr::create(ProcessorIMod, getContext()),
6086 } else if (Mnemonic == "cps" && isMClass()) {
6087 return Error(NameLoc, "instruction 'cps' requires effect for M-class");
6090 // Add the remaining tokens in the mnemonic.
6091 while (Next != StringRef::npos) {
6093 Next = Name.find('.', Start + 1);
6094 StringRef ExtraToken = Name.slice(Start, Next);
6096 // Some NEON instructions have an optional datatype suffix that is
6097 // completely ignored. Check for that.
6098 if (isDataTypeToken(ExtraToken) &&
6099 doesIgnoreDataTypeSuffix(Mnemonic, ExtraToken))
6102 // For for ARM mode generate an error if the .n qualifier is used.
6103 if (ExtraToken == ".n" && !isThumb()) {
6104 SMLoc Loc = SMLoc::getFromPointer(NameLoc.getPointer() + Start);
6105 return Error(Loc, "instruction with .n (narrow) qualifier not allowed in "
6109 // The .n qualifier is always discarded as that is what the tables
6110 // and matcher expect. In ARM mode the .w qualifier has no effect,
6111 // so discard it to avoid errors that can be caused by the matcher.
6112 if (ExtraToken != ".n" && (isThumb() || ExtraToken != ".w")) {
6113 SMLoc Loc = SMLoc::getFromPointer(NameLoc.getPointer() + Start);
6114 Operands.push_back(ARMOperand::CreateToken(ExtraToken, Loc));
6118 // Read the remaining operands.
6119 if (getLexer().isNot(AsmToken::EndOfStatement)) {
6120 // Read the first operand.
6121 if (parseOperand(Operands, Mnemonic)) {
6125 while (parseOptionalToken(AsmToken::Comma)) {
6126 // Parse and remember the operand.
6127 if (parseOperand(Operands, Mnemonic)) {
6133 if (parseToken(AsmToken::EndOfStatement, "unexpected token in argument list"))
6136 if (RequireVFPRegisterListCheck) {
6137 ARMOperand &Op = static_cast<ARMOperand &>(*Operands.back());
6138 if (AcceptSinglePrecisionOnly && !Op.isSPRRegList())
6139 return Error(Op.getStartLoc(),
6140 "VFP/Neon single precision register expected");
6141 if (AcceptDoublePrecisionOnly && !Op.isDPRRegList())
6142 return Error(Op.getStartLoc(),
6143 "VFP/Neon double precision register expected");
6146 tryConvertingToTwoOperandForm(Mnemonic, CarrySetting, Operands);
6148 // Some instructions, mostly Thumb, have forms for the same mnemonic that
6149 // do and don't have a cc_out optional-def operand. With some spot-checks
6150 // of the operand list, we can figure out which variant we're trying to
6151 // parse and adjust accordingly before actually matching. We shouldn't ever
6152 // try to remove a cc_out operand that was explicitly set on the
6153 // mnemonic, of course (CarrySetting == true). Reason number #317 the
6154 // table driven matcher doesn't fit well with the ARM instruction set.
6155 if (!CarrySetting && shouldOmitCCOutOperand(Mnemonic, Operands))
6156 Operands.erase(Operands.begin() + 1);
6158 // Some instructions have the same mnemonic, but don't always
6159 // have a predicate. Distinguish them here and delete the
6160 // predicate if needed.
6161 if (shouldOmitPredicateOperand(Mnemonic, Operands))
6162 Operands.erase(Operands.begin() + 1);
6164 // ARM mode 'blx' need special handling, as the register operand version
6165 // is predicable, but the label operand version is not. So, we can't rely
6166 // on the Mnemonic based checking to correctly figure out when to put
6167 // a k_CondCode operand in the list. If we're trying to match the label
6168 // version, remove the k_CondCode operand here.
6169 if (!isThumb() && Mnemonic == "blx" && Operands.size() == 3 &&
6170 static_cast<ARMOperand &>(*Operands[2]).isImm())
6171 Operands.erase(Operands.begin() + 1);
6173 // Adjust operands of ldrexd/strexd to MCK_GPRPair.
6174 // ldrexd/strexd require even/odd GPR pair. To enforce this constraint,
6175 // a single GPRPair reg operand is used in the .td file to replace the two
6176 // GPRs. However, when parsing from asm, the two GRPs cannot be automatically
6177 // expressed as a GPRPair, so we have to manually merge them.
6178 // FIXME: We would really like to be able to tablegen'erate this.
6179 if (!isThumb() && Operands.size() > 4 &&
6180 (Mnemonic == "ldrexd" || Mnemonic == "strexd" || Mnemonic == "ldaexd" ||
6181 Mnemonic == "stlexd")) {
6182 bool isLoad = (Mnemonic == "ldrexd" || Mnemonic == "ldaexd");
6183 unsigned Idx = isLoad ? 2 : 3;
6184 ARMOperand &Op1 = static_cast<ARMOperand &>(*Operands[Idx]);
6185 ARMOperand &Op2 = static_cast<ARMOperand &>(*Operands[Idx + 1]);
6187 const MCRegisterClass& MRC = MRI->getRegClass(ARM::GPRRegClassID);
6188 // Adjust only if Op1 and Op2 are GPRs.
6189 if (Op1.isReg() && Op2.isReg() && MRC.contains(Op1.getReg()) &&
6190 MRC.contains(Op2.getReg())) {
6191 unsigned Reg1 = Op1.getReg();
6192 unsigned Reg2 = Op2.getReg();
6193 unsigned Rt = MRI->getEncodingValue(Reg1);
6194 unsigned Rt2 = MRI->getEncodingValue(Reg2);
6196 // Rt2 must be Rt + 1 and Rt must be even.
6197 if (Rt + 1 != Rt2 || (Rt & 1)) {
6198 return Error(Op2.getStartLoc(),
6199 isLoad ? "destination operands must be sequential"
6200 : "source operands must be sequential");
6202 unsigned NewReg = MRI->getMatchingSuperReg(Reg1, ARM::gsub_0,
6203 &(MRI->getRegClass(ARM::GPRPairRegClassID)));
6205 ARMOperand::CreateReg(NewReg, Op1.getStartLoc(), Op2.getEndLoc());
6206 Operands.erase(Operands.begin() + Idx + 1);
6210 // GNU Assembler extension (compatibility)
6211 if ((Mnemonic == "ldrd" || Mnemonic == "strd")) {
6212 ARMOperand &Op2 = static_cast<ARMOperand &>(*Operands[2]);
6213 ARMOperand &Op3 = static_cast<ARMOperand &>(*Operands[3]);
6215 assert(Op2.isReg() && "expected register argument");
6217 unsigned SuperReg = MRI->getMatchingSuperReg(
6218 Op2.getReg(), ARM::gsub_0, &MRI->getRegClass(ARM::GPRPairRegClassID));
6220 assert(SuperReg && "expected register pair");
6222 unsigned PairedReg = MRI->getSubReg(SuperReg, ARM::gsub_1);
6225 Operands.begin() + 3,
6226 ARMOperand::CreateReg(PairedReg, Op2.getStartLoc(), Op2.getEndLoc()));
6230 // FIXME: As said above, this is all a pretty gross hack. This instruction
6231 // does not fit with other "subs" and tblgen.
6232 // Adjust operands of B9.3.19 SUBS PC, LR, #imm (Thumb2) system instruction
6233 // so the Mnemonic is the original name "subs" and delete the predicate
6234 // operand so it will match the table entry.
6235 if (isThumbTwo() && Mnemonic == "sub" && Operands.size() == 6 &&
6236 static_cast<ARMOperand &>(*Operands[3]).isReg() &&
6237 static_cast<ARMOperand &>(*Operands[3]).getReg() == ARM::PC &&
6238 static_cast<ARMOperand &>(*Operands[4]).isReg() &&
6239 static_cast<ARMOperand &>(*Operands[4]).getReg() == ARM::LR &&
6240 static_cast<ARMOperand &>(*Operands[5]).isImm()) {
6241 Operands.front() = ARMOperand::CreateToken(Name, NameLoc);
6242 Operands.erase(Operands.begin() + 1);
6247 // Validate context-sensitive operand constraints.
6249 // return 'true' if register list contains non-low GPR registers,
6250 // 'false' otherwise. If Reg is in the register list or is HiReg, set
6251 // 'containsReg' to true.
6252 static bool checkLowRegisterList(const MCInst &Inst, unsigned OpNo,
6253 unsigned Reg, unsigned HiReg,
6254 bool &containsReg) {
6255 containsReg = false;
6256 for (unsigned i = OpNo; i < Inst.getNumOperands(); ++i) {
6257 unsigned OpReg = Inst.getOperand(i).getReg();
6260 // Anything other than a low register isn't legal here.
6261 if (!isARMLowRegister(OpReg) && (!HiReg || OpReg != HiReg))
6267 // Check if the specified regisgter is in the register list of the inst,
6268 // starting at the indicated operand number.
6269 static bool listContainsReg(const MCInst &Inst, unsigned OpNo, unsigned Reg) {
6270 for (unsigned i = OpNo, e = Inst.getNumOperands(); i < e; ++i) {
6271 unsigned OpReg = Inst.getOperand(i).getReg();
6278 // Return true if instruction has the interesting property of being
6279 // allowed in IT blocks, but not being predicable.
6280 static bool instIsBreakpoint(const MCInst &Inst) {
6281 return Inst.getOpcode() == ARM::tBKPT ||
6282 Inst.getOpcode() == ARM::BKPT ||
6283 Inst.getOpcode() == ARM::tHLT ||
6284 Inst.getOpcode() == ARM::HLT;
6288 bool ARMAsmParser::validatetLDMRegList(const MCInst &Inst,
6289 const OperandVector &Operands,
6290 unsigned ListNo, bool IsARPop) {
6291 const ARMOperand &Op = static_cast<const ARMOperand &>(*Operands[ListNo]);
6292 bool HasWritebackToken = Op.isToken() && Op.getToken() == "!";
6294 bool ListContainsSP = listContainsReg(Inst, ListNo, ARM::SP);
6295 bool ListContainsLR = listContainsReg(Inst, ListNo, ARM::LR);
6296 bool ListContainsPC = listContainsReg(Inst, ListNo, ARM::PC);
6298 if (!IsARPop && ListContainsSP)
6299 return Error(Operands[ListNo + HasWritebackToken]->getStartLoc(),
6300 "SP may not be in the register list");
6301 else if (ListContainsPC && ListContainsLR)
6302 return Error(Operands[ListNo + HasWritebackToken]->getStartLoc(),
6303 "PC and LR may not be in the register list simultaneously");
6304 else if (inITBlock() && !lastInITBlock() && ListContainsPC)
6305 return Error(Operands[ListNo + HasWritebackToken]->getStartLoc(),
6306 "instruction must be outside of IT block or the last "
6307 "instruction in an IT block");
6311 bool ARMAsmParser::validatetSTMRegList(const MCInst &Inst,
6312 const OperandVector &Operands,
6314 const ARMOperand &Op = static_cast<const ARMOperand &>(*Operands[ListNo]);
6315 bool HasWritebackToken = Op.isToken() && Op.getToken() == "!";
6317 bool ListContainsSP = listContainsReg(Inst, ListNo, ARM::SP);
6318 bool ListContainsPC = listContainsReg(Inst, ListNo, ARM::PC);
6320 if (ListContainsSP && ListContainsPC)
6321 return Error(Operands[ListNo + HasWritebackToken]->getStartLoc(),
6322 "SP and PC may not be in the register list");
6323 else if (ListContainsSP)
6324 return Error(Operands[ListNo + HasWritebackToken]->getStartLoc(),
6325 "SP may not be in the register list");
6326 else if (ListContainsPC)
6327 return Error(Operands[ListNo + HasWritebackToken]->getStartLoc(),
6328 "PC may not be in the register list");
6332 // FIXME: We would really like to be able to tablegen'erate this.
6333 bool ARMAsmParser::validateInstruction(MCInst &Inst,
6334 const OperandVector &Operands) {
6335 const MCInstrDesc &MCID = MII.get(Inst.getOpcode());
6336 SMLoc Loc = Operands[0]->getStartLoc();
6338 // Check the IT block state first.
6339 // NOTE: BKPT and HLT instructions have the interesting property of being
6340 // allowed in IT blocks, but not being predicable. They just always execute.
6341 if (inITBlock() && !instIsBreakpoint(Inst)) {
6342 // The instruction must be predicable.
6343 if (!MCID.isPredicable())
6344 return Error(Loc, "instructions in IT block must be predicable");
6345 unsigned Cond = Inst.getOperand(MCID.findFirstPredOperandIdx()).getImm();
6346 if (Cond != currentITCond()) {
6347 // Find the condition code Operand to get its SMLoc information.
6349 for (unsigned I = 1; I < Operands.size(); ++I)
6350 if (static_cast<ARMOperand &>(*Operands[I]).isCondCode())
6351 CondLoc = Operands[I]->getStartLoc();
6352 return Error(CondLoc, "incorrect condition in IT block; got '" +
6353 StringRef(ARMCondCodeToString(ARMCC::CondCodes(Cond))) +
6354 "', but expected '" +
6355 ARMCondCodeToString(ARMCC::CondCodes(currentITCond())) + "'");
6357 // Check for non-'al' condition codes outside of the IT block.
6358 } else if (isThumbTwo() && MCID.isPredicable() &&
6359 Inst.getOperand(MCID.findFirstPredOperandIdx()).getImm() !=
6360 ARMCC::AL && Inst.getOpcode() != ARM::tBcc &&
6361 Inst.getOpcode() != ARM::t2Bcc) {
6362 return Error(Loc, "predicated instructions must be in IT block");
6363 } else if (!isThumb() && !useImplicitITARM() && MCID.isPredicable() &&
6364 Inst.getOperand(MCID.findFirstPredOperandIdx()).getImm() !=
6366 return Warning(Loc, "predicated instructions should be in IT block");
6369 const unsigned Opcode = Inst.getOpcode();
6373 case ARM::LDRD_POST: {
6374 const unsigned RtReg = Inst.getOperand(0).getReg();
6377 if (RtReg == ARM::LR)
6378 return Error(Operands[3]->getStartLoc(),
6381 const unsigned Rt = MRI->getEncodingValue(RtReg);
6382 // Rt must be even-numbered.
6384 return Error(Operands[3]->getStartLoc(),
6385 "Rt must be even-numbered");
6387 // Rt2 must be Rt + 1.
6388 const unsigned Rt2 = MRI->getEncodingValue(Inst.getOperand(1).getReg());
6390 return Error(Operands[3]->getStartLoc(),
6391 "destination operands must be sequential");
6393 if (Opcode == ARM::LDRD_PRE || Opcode == ARM::LDRD_POST) {
6394 const unsigned Rn = MRI->getEncodingValue(Inst.getOperand(3).getReg());
6395 // For addressing modes with writeback, the base register needs to be
6396 // different from the destination registers.
6397 if (Rn == Rt || Rn == Rt2)
6398 return Error(Operands[3]->getStartLoc(),
6399 "base register needs to be different from destination "
6406 case ARM::t2LDRD_PRE:
6407 case ARM::t2LDRD_POST: {
6408 // Rt2 must be different from Rt.
6409 unsigned Rt = MRI->getEncodingValue(Inst.getOperand(0).getReg());
6410 unsigned Rt2 = MRI->getEncodingValue(Inst.getOperand(1).getReg());
6412 return Error(Operands[3]->getStartLoc(),
6413 "destination operands can't be identical");
6417 const unsigned RmReg = Inst.getOperand(0).getReg();
6418 // Rm = SP is no longer unpredictable in v8-A
6419 if (RmReg == ARM::SP && !hasV8Ops())
6420 return Error(Operands[2]->getStartLoc(),
6421 "r13 (SP) is an unpredictable operand to BXJ");
6425 // Rt2 must be Rt + 1.
6426 unsigned Rt = MRI->getEncodingValue(Inst.getOperand(0).getReg());
6427 unsigned Rt2 = MRI->getEncodingValue(Inst.getOperand(1).getReg());
6429 return Error(Operands[3]->getStartLoc(),
6430 "source operands must be sequential");
6434 case ARM::STRD_POST: {
6435 // Rt2 must be Rt + 1.
6436 unsigned Rt = MRI->getEncodingValue(Inst.getOperand(1).getReg());
6437 unsigned Rt2 = MRI->getEncodingValue(Inst.getOperand(2).getReg());
6439 return Error(Operands[3]->getStartLoc(),
6440 "source operands must be sequential");
6443 case ARM::STR_PRE_IMM:
6444 case ARM::STR_PRE_REG:
6445 case ARM::STR_POST_IMM:
6446 case ARM::STR_POST_REG:
6448 case ARM::STRH_POST:
6449 case ARM::STRB_PRE_IMM:
6450 case ARM::STRB_PRE_REG:
6451 case ARM::STRB_POST_IMM:
6452 case ARM::STRB_POST_REG: {
6453 // Rt must be different from Rn.
6454 const unsigned Rt = MRI->getEncodingValue(Inst.getOperand(1).getReg());
6455 const unsigned Rn = MRI->getEncodingValue(Inst.getOperand(2).getReg());
6458 return Error(Operands[3]->getStartLoc(),
6459 "source register and base register can't be identical");
6462 case ARM::LDR_PRE_IMM:
6463 case ARM::LDR_PRE_REG:
6464 case ARM::LDR_POST_IMM:
6465 case ARM::LDR_POST_REG:
6467 case ARM::LDRH_POST:
6468 case ARM::LDRSH_PRE:
6469 case ARM::LDRSH_POST:
6470 case ARM::LDRB_PRE_IMM:
6471 case ARM::LDRB_PRE_REG:
6472 case ARM::LDRB_POST_IMM:
6473 case ARM::LDRB_POST_REG:
6474 case ARM::LDRSB_PRE:
6475 case ARM::LDRSB_POST: {
6476 // Rt must be different from Rn.
6477 const unsigned Rt = MRI->getEncodingValue(Inst.getOperand(0).getReg());
6478 const unsigned Rn = MRI->getEncodingValue(Inst.getOperand(2).getReg());
6481 return Error(Operands[3]->getStartLoc(),
6482 "destination register and base register can't be identical");
6487 // Width must be in range [1, 32-lsb].
6488 unsigned LSB = Inst.getOperand(2).getImm();
6489 unsigned Widthm1 = Inst.getOperand(3).getImm();
6490 if (Widthm1 >= 32 - LSB)
6491 return Error(Operands[5]->getStartLoc(),
6492 "bitfield width must be in range [1,32-lsb]");
6495 // Notionally handles ARM::tLDMIA_UPD too.
6497 // If we're parsing Thumb2, the .w variant is available and handles
6498 // most cases that are normally illegal for a Thumb1 LDM instruction.
6499 // We'll make the transformation in processInstruction() if necessary.
6501 // Thumb LDM instructions are writeback iff the base register is not
6502 // in the register list.
6503 unsigned Rn = Inst.getOperand(0).getReg();
6504 bool HasWritebackToken =
6505 (static_cast<ARMOperand &>(*Operands[3]).isToken() &&
6506 static_cast<ARMOperand &>(*Operands[3]).getToken() == "!");
6507 bool ListContainsBase;
6508 if (checkLowRegisterList(Inst, 3, Rn, 0, ListContainsBase) && !isThumbTwo())
6509 return Error(Operands[3 + HasWritebackToken]->getStartLoc(),
6510 "registers must be in range r0-r7");
6511 // If we should have writeback, then there should be a '!' token.
6512 if (!ListContainsBase && !HasWritebackToken && !isThumbTwo())
6513 return Error(Operands[2]->getStartLoc(),
6514 "writeback operator '!' expected");
6515 // If we should not have writeback, there must not be a '!'. This is
6516 // true even for the 32-bit wide encodings.
6517 if (ListContainsBase && HasWritebackToken)
6518 return Error(Operands[3]->getStartLoc(),
6519 "writeback operator '!' not allowed when base register "
6520 "in register list");
6522 if (validatetLDMRegList(Inst, Operands, 3))
6526 case ARM::LDMIA_UPD:
6527 case ARM::LDMDB_UPD:
6528 case ARM::LDMIB_UPD:
6529 case ARM::LDMDA_UPD:
6530 // ARM variants loading and updating the same register are only officially
6531 // UNPREDICTABLE on v7 upwards. Goodness knows what they did before.
6534 if (listContainsReg(Inst, 3, Inst.getOperand(0).getReg()))
6535 return Error(Operands.back()->getStartLoc(),
6536 "writeback register not allowed in register list");
6540 if (validatetLDMRegList(Inst, Operands, 3))
6545 if (validatetSTMRegList(Inst, Operands, 3))
6548 case ARM::t2LDMIA_UPD:
6549 case ARM::t2LDMDB_UPD:
6550 case ARM::t2STMIA_UPD:
6551 case ARM::t2STMDB_UPD: {
6552 if (listContainsReg(Inst, 3, Inst.getOperand(0).getReg()))
6553 return Error(Operands.back()->getStartLoc(),
6554 "writeback register not allowed in register list");
6556 if (Opcode == ARM::t2LDMIA_UPD || Opcode == ARM::t2LDMDB_UPD) {
6557 if (validatetLDMRegList(Inst, Operands, 3))
6560 if (validatetSTMRegList(Inst, Operands, 3))
6565 case ARM::sysLDMIA_UPD:
6566 case ARM::sysLDMDA_UPD:
6567 case ARM::sysLDMDB_UPD:
6568 case ARM::sysLDMIB_UPD:
6569 if (!listContainsReg(Inst, 3, ARM::PC))
6570 return Error(Operands[4]->getStartLoc(),
6571 "writeback register only allowed on system LDM "
6572 "if PC in register-list");
6574 case ARM::sysSTMIA_UPD:
6575 case ARM::sysSTMDA_UPD:
6576 case ARM::sysSTMDB_UPD:
6577 case ARM::sysSTMIB_UPD:
6578 return Error(Operands[2]->getStartLoc(),
6579 "system STM cannot have writeback register");
6581 // The second source operand must be the same register as the destination
6584 // In this case, we must directly check the parsed operands because the
6585 // cvtThumbMultiply() function is written in such a way that it guarantees
6586 // this first statement is always true for the new Inst. Essentially, the
6587 // destination is unconditionally copied into the second source operand
6588 // without checking to see if it matches what we actually parsed.
6589 if (Operands.size() == 6 && (((ARMOperand &)*Operands[3]).getReg() !=
6590 ((ARMOperand &)*Operands[5]).getReg()) &&
6591 (((ARMOperand &)*Operands[3]).getReg() !=
6592 ((ARMOperand &)*Operands[4]).getReg())) {
6593 return Error(Operands[3]->getStartLoc(),
6594 "destination register must match source register");
6598 // Like for ldm/stm, push and pop have hi-reg handling version in Thumb2,
6599 // so only issue a diagnostic for thumb1. The instructions will be
6600 // switched to the t2 encodings in processInstruction() if necessary.
6602 bool ListContainsBase;
6603 if (checkLowRegisterList(Inst, 2, 0, ARM::PC, ListContainsBase) &&
6605 return Error(Operands[2]->getStartLoc(),
6606 "registers must be in range r0-r7 or pc");
6607 if (validatetLDMRegList(Inst, Operands, 2, !isMClass()))
6612 bool ListContainsBase;
6613 if (checkLowRegisterList(Inst, 2, 0, ARM::LR, ListContainsBase) &&
6615 return Error(Operands[2]->getStartLoc(),
6616 "registers must be in range r0-r7 or lr");
6617 if (validatetSTMRegList(Inst, Operands, 2))
6621 case ARM::tSTMIA_UPD: {
6622 bool ListContainsBase, InvalidLowList;
6623 InvalidLowList = checkLowRegisterList(Inst, 4, Inst.getOperand(0).getReg(),
6624 0, ListContainsBase);
6625 if (InvalidLowList && !isThumbTwo())
6626 return Error(Operands[4]->getStartLoc(),
6627 "registers must be in range r0-r7");
6629 // This would be converted to a 32-bit stm, but that's not valid if the
6630 // writeback register is in the list.
6631 if (InvalidLowList && ListContainsBase)
6632 return Error(Operands[4]->getStartLoc(),
6633 "writeback operator '!' not allowed when base register "
6634 "in register list");
6636 if (validatetSTMRegList(Inst, Operands, 4))
6640 case ARM::tADDrSP: {
6641 // If the non-SP source operand and the destination operand are not the
6642 // same, we need thumb2 (for the wide encoding), or we have an error.
6643 if (!isThumbTwo() &&
6644 Inst.getOperand(0).getReg() != Inst.getOperand(2).getReg()) {
6645 return Error(Operands[4]->getStartLoc(),
6646 "source register must be the same as destination");
6650 // Final range checking for Thumb unconditional branch instructions.
6652 if (!(static_cast<ARMOperand &>(*Operands[2])).isSignedOffset<11, 1>())
6653 return Error(Operands[2]->getStartLoc(), "branch target out of range");
6656 int op = (Operands[2]->isImm()) ? 2 : 3;
6657 if (!static_cast<ARMOperand &>(*Operands[op]).isSignedOffset<24, 1>())
6658 return Error(Operands[op]->getStartLoc(), "branch target out of range");
6661 // Final range checking for Thumb conditional branch instructions.
6663 if (!static_cast<ARMOperand &>(*Operands[2]).isSignedOffset<8, 1>())
6664 return Error(Operands[2]->getStartLoc(), "branch target out of range");
6667 int Op = (Operands[2]->isImm()) ? 2 : 3;
6668 if (!static_cast<ARMOperand &>(*Operands[Op]).isSignedOffset<20, 1>())
6669 return Error(Operands[Op]->getStartLoc(), "branch target out of range");
6674 if (!static_cast<ARMOperand &>(*Operands[2]).isUnsignedOffset<6, 1>())
6675 return Error(Operands[2]->getStartLoc(), "branch target out of range");
6680 case ARM::t2MOVTi16:
6682 // We want to avoid misleadingly allowing something like "mov r0, <symbol>"
6683 // especially when we turn it into a movw and the expression <symbol> does
6684 // not have a :lower16: or :upper16 as part of the expression. We don't
6685 // want the behavior of silently truncating, which can be unexpected and
6686 // lead to bugs that are difficult to find since this is an easy mistake
6688 int i = (Operands[3]->isImm()) ? 3 : 4;
6689 ARMOperand &Op = static_cast<ARMOperand &>(*Operands[i]);
6690 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(Op.getImm());
6692 const MCExpr *E = dyn_cast<MCExpr>(Op.getImm());
6694 const ARMMCExpr *ARM16Expr = dyn_cast<ARMMCExpr>(E);
6695 if (!ARM16Expr || (ARM16Expr->getKind() != ARMMCExpr::VK_ARM_HI16 &&
6696 ARM16Expr->getKind() != ARMMCExpr::VK_ARM_LO16))
6699 "immediate expression for mov requires :lower16: or :upper16");
6705 // ESB is not predicable (pred must be AL)
6706 unsigned Imm8 = Inst.getOperand(0).getImm();
6707 unsigned Pred = Inst.getOperand(1).getImm();
6708 if (Imm8 == 0x10 && Pred != ARMCC::AL)
6709 return Error(Operands[1]->getStartLoc(), "instruction 'esb' is not "
6710 "predicable, but condition "
6713 // Without the RAS extension, this behaves as any other unallocated hint.
6721 static unsigned getRealVSTOpcode(unsigned Opc, unsigned &Spacing) {
6723 default: llvm_unreachable("unexpected opcode!");
6725 case ARM::VST1LNdWB_fixed_Asm_8: Spacing = 1; return ARM::VST1LNd8_UPD;
6726 case ARM::VST1LNdWB_fixed_Asm_16: Spacing = 1; return ARM::VST1LNd16_UPD;
6727 case ARM::VST1LNdWB_fixed_Asm_32: Spacing = 1; return ARM::VST1LNd32_UPD;
6728 case ARM::VST1LNdWB_register_Asm_8: Spacing = 1; return ARM::VST1LNd8_UPD;
6729 case ARM::VST1LNdWB_register_Asm_16: Spacing = 1; return ARM::VST1LNd16_UPD;
6730 case ARM::VST1LNdWB_register_Asm_32: Spacing = 1; return ARM::VST1LNd32_UPD;
6731 case ARM::VST1LNdAsm_8: Spacing = 1; return ARM::VST1LNd8;
6732 case ARM::VST1LNdAsm_16: Spacing = 1; return ARM::VST1LNd16;
6733 case ARM::VST1LNdAsm_32: Spacing = 1; return ARM::VST1LNd32;
6736 case ARM::VST2LNdWB_fixed_Asm_8: Spacing = 1; return ARM::VST2LNd8_UPD;
6737 case ARM::VST2LNdWB_fixed_Asm_16: Spacing = 1; return ARM::VST2LNd16_UPD;
6738 case ARM::VST2LNdWB_fixed_Asm_32: Spacing = 1; return ARM::VST2LNd32_UPD;
6739 case ARM::VST2LNqWB_fixed_Asm_16: Spacing = 2; return ARM::VST2LNq16_UPD;
6740 case ARM::VST2LNqWB_fixed_Asm_32: Spacing = 2; return ARM::VST2LNq32_UPD;
6742 case ARM::VST2LNdWB_register_Asm_8: Spacing = 1; return ARM::VST2LNd8_UPD;
6743 case ARM::VST2LNdWB_register_Asm_16: Spacing = 1; return ARM::VST2LNd16_UPD;
6744 case ARM::VST2LNdWB_register_Asm_32: Spacing = 1; return ARM::VST2LNd32_UPD;
6745 case ARM::VST2LNqWB_register_Asm_16: Spacing = 2; return ARM::VST2LNq16_UPD;
6746 case ARM::VST2LNqWB_register_Asm_32: Spacing = 2; return ARM::VST2LNq32_UPD;
6748 case ARM::VST2LNdAsm_8: Spacing = 1; return ARM::VST2LNd8;
6749 case ARM::VST2LNdAsm_16: Spacing = 1; return ARM::VST2LNd16;
6750 case ARM::VST2LNdAsm_32: Spacing = 1; return ARM::VST2LNd32;
6751 case ARM::VST2LNqAsm_16: Spacing = 2; return ARM::VST2LNq16;
6752 case ARM::VST2LNqAsm_32: Spacing = 2; return ARM::VST2LNq32;
6755 case ARM::VST3LNdWB_fixed_Asm_8: Spacing = 1; return ARM::VST3LNd8_UPD;
6756 case ARM::VST3LNdWB_fixed_Asm_16: Spacing = 1; return ARM::VST3LNd16_UPD;
6757 case ARM::VST3LNdWB_fixed_Asm_32: Spacing = 1; return ARM::VST3LNd32_UPD;
6758 case ARM::VST3LNqWB_fixed_Asm_16: Spacing = 1; return ARM::VST3LNq16_UPD;
6759 case ARM::VST3LNqWB_fixed_Asm_32: Spacing = 2; return ARM::VST3LNq32_UPD;
6760 case ARM::VST3LNdWB_register_Asm_8: Spacing = 1; return ARM::VST3LNd8_UPD;
6761 case ARM::VST3LNdWB_register_Asm_16: Spacing = 1; return ARM::VST3LNd16_UPD;
6762 case ARM::VST3LNdWB_register_Asm_32: Spacing = 1; return ARM::VST3LNd32_UPD;
6763 case ARM::VST3LNqWB_register_Asm_16: Spacing = 2; return ARM::VST3LNq16_UPD;
6764 case ARM::VST3LNqWB_register_Asm_32: Spacing = 2; return ARM::VST3LNq32_UPD;
6765 case ARM::VST3LNdAsm_8: Spacing = 1; return ARM::VST3LNd8;
6766 case ARM::VST3LNdAsm_16: Spacing = 1; return ARM::VST3LNd16;
6767 case ARM::VST3LNdAsm_32: Spacing = 1; return ARM::VST3LNd32;
6768 case ARM::VST3LNqAsm_16: Spacing = 2; return ARM::VST3LNq16;
6769 case ARM::VST3LNqAsm_32: Spacing = 2; return ARM::VST3LNq32;
6772 case ARM::VST3dWB_fixed_Asm_8: Spacing = 1; return ARM::VST3d8_UPD;
6773 case ARM::VST3dWB_fixed_Asm_16: Spacing = 1; return ARM::VST3d16_UPD;
6774 case ARM::VST3dWB_fixed_Asm_32: Spacing = 1; return ARM::VST3d32_UPD;
6775 case ARM::VST3qWB_fixed_Asm_8: Spacing = 2; return ARM::VST3q8_UPD;
6776 case ARM::VST3qWB_fixed_Asm_16: Spacing = 2; return ARM::VST3q16_UPD;
6777 case ARM::VST3qWB_fixed_Asm_32: Spacing = 2; return ARM::VST3q32_UPD;
6778 case ARM::VST3dWB_register_Asm_8: Spacing = 1; return ARM::VST3d8_UPD;
6779 case ARM::VST3dWB_register_Asm_16: Spacing = 1; return ARM::VST3d16_UPD;
6780 case ARM::VST3dWB_register_Asm_32: Spacing = 1; return ARM::VST3d32_UPD;
6781 case ARM::VST3qWB_register_Asm_8: Spacing = 2; return ARM::VST3q8_UPD;
6782 case ARM::VST3qWB_register_Asm_16: Spacing = 2; return ARM::VST3q16_UPD;
6783 case ARM::VST3qWB_register_Asm_32: Spacing = 2; return ARM::VST3q32_UPD;
6784 case ARM::VST3dAsm_8: Spacing = 1; return ARM::VST3d8;
6785 case ARM::VST3dAsm_16: Spacing = 1; return ARM::VST3d16;
6786 case ARM::VST3dAsm_32: Spacing = 1; return ARM::VST3d32;
6787 case ARM::VST3qAsm_8: Spacing = 2; return ARM::VST3q8;
6788 case ARM::VST3qAsm_16: Spacing = 2; return ARM::VST3q16;
6789 case ARM::VST3qAsm_32: Spacing = 2; return ARM::VST3q32;
6792 case ARM::VST4LNdWB_fixed_Asm_8: Spacing = 1; return ARM::VST4LNd8_UPD;
6793 case ARM::VST4LNdWB_fixed_Asm_16: Spacing = 1; return ARM::VST4LNd16_UPD;
6794 case ARM::VST4LNdWB_fixed_Asm_32: Spacing = 1; return ARM::VST4LNd32_UPD;
6795 case ARM::VST4LNqWB_fixed_Asm_16: Spacing = 1; return ARM::VST4LNq16_UPD;
6796 case ARM::VST4LNqWB_fixed_Asm_32: Spacing = 2; return ARM::VST4LNq32_UPD;
6797 case ARM::VST4LNdWB_register_Asm_8: Spacing = 1; return ARM::VST4LNd8_UPD;
6798 case ARM::VST4LNdWB_register_Asm_16: Spacing = 1; return ARM::VST4LNd16_UPD;
6799 case ARM::VST4LNdWB_register_Asm_32: Spacing = 1; return ARM::VST4LNd32_UPD;
6800 case ARM::VST4LNqWB_register_Asm_16: Spacing = 2; return ARM::VST4LNq16_UPD;
6801 case ARM::VST4LNqWB_register_Asm_32: Spacing = 2; return ARM::VST4LNq32_UPD;
6802 case ARM::VST4LNdAsm_8: Spacing = 1; return ARM::VST4LNd8;
6803 case ARM::VST4LNdAsm_16: Spacing = 1; return ARM::VST4LNd16;
6804 case ARM::VST4LNdAsm_32: Spacing = 1; return ARM::VST4LNd32;
6805 case ARM::VST4LNqAsm_16: Spacing = 2; return ARM::VST4LNq16;
6806 case ARM::VST4LNqAsm_32: Spacing = 2; return ARM::VST4LNq32;
6809 case ARM::VST4dWB_fixed_Asm_8: Spacing = 1; return ARM::VST4d8_UPD;
6810 case ARM::VST4dWB_fixed_Asm_16: Spacing = 1; return ARM::VST4d16_UPD;
6811 case ARM::VST4dWB_fixed_Asm_32: Spacing = 1; return ARM::VST4d32_UPD;
6812 case ARM::VST4qWB_fixed_Asm_8: Spacing = 2; return ARM::VST4q8_UPD;
6813 case ARM::VST4qWB_fixed_Asm_16: Spacing = 2; return ARM::VST4q16_UPD;
6814 case ARM::VST4qWB_fixed_Asm_32: Spacing = 2; return ARM::VST4q32_UPD;
6815 case ARM::VST4dWB_register_Asm_8: Spacing = 1; return ARM::VST4d8_UPD;
6816 case ARM::VST4dWB_register_Asm_16: Spacing = 1; return ARM::VST4d16_UPD;
6817 case ARM::VST4dWB_register_Asm_32: Spacing = 1; return ARM::VST4d32_UPD;
6818 case ARM::VST4qWB_register_Asm_8: Spacing = 2; return ARM::VST4q8_UPD;
6819 case ARM::VST4qWB_register_Asm_16: Spacing = 2; return ARM::VST4q16_UPD;
6820 case ARM::VST4qWB_register_Asm_32: Spacing = 2; return ARM::VST4q32_UPD;
6821 case ARM::VST4dAsm_8: Spacing = 1; return ARM::VST4d8;
6822 case ARM::VST4dAsm_16: Spacing = 1; return ARM::VST4d16;
6823 case ARM::VST4dAsm_32: Spacing = 1; return ARM::VST4d32;
6824 case ARM::VST4qAsm_8: Spacing = 2; return ARM::VST4q8;
6825 case ARM::VST4qAsm_16: Spacing = 2; return ARM::VST4q16;
6826 case ARM::VST4qAsm_32: Spacing = 2; return ARM::VST4q32;
6830 static unsigned getRealVLDOpcode(unsigned Opc, unsigned &Spacing) {
6832 default: llvm_unreachable("unexpected opcode!");
6834 case ARM::VLD1LNdWB_fixed_Asm_8: Spacing = 1; return ARM::VLD1LNd8_UPD;
6835 case ARM::VLD1LNdWB_fixed_Asm_16: Spacing = 1; return ARM::VLD1LNd16_UPD;
6836 case ARM::VLD1LNdWB_fixed_Asm_32: Spacing = 1; return ARM::VLD1LNd32_UPD;
6837 case ARM::VLD1LNdWB_register_Asm_8: Spacing = 1; return ARM::VLD1LNd8_UPD;
6838 case ARM::VLD1LNdWB_register_Asm_16: Spacing = 1; return ARM::VLD1LNd16_UPD;
6839 case ARM::VLD1LNdWB_register_Asm_32: Spacing = 1; return ARM::VLD1LNd32_UPD;
6840 case ARM::VLD1LNdAsm_8: Spacing = 1; return ARM::VLD1LNd8;
6841 case ARM::VLD1LNdAsm_16: Spacing = 1; return ARM::VLD1LNd16;
6842 case ARM::VLD1LNdAsm_32: Spacing = 1; return ARM::VLD1LNd32;
6845 case ARM::VLD2LNdWB_fixed_Asm_8: Spacing = 1; return ARM::VLD2LNd8_UPD;
6846 case ARM::VLD2LNdWB_fixed_Asm_16: Spacing = 1; return ARM::VLD2LNd16_UPD;
6847 case ARM::VLD2LNdWB_fixed_Asm_32: Spacing = 1; return ARM::VLD2LNd32_UPD;
6848 case ARM::VLD2LNqWB_fixed_Asm_16: Spacing = 1; return ARM::VLD2LNq16_UPD;
6849 case ARM::VLD2LNqWB_fixed_Asm_32: Spacing = 2; return ARM::VLD2LNq32_UPD;
6850 case ARM::VLD2LNdWB_register_Asm_8: Spacing = 1; return ARM::VLD2LNd8_UPD;
6851 case ARM::VLD2LNdWB_register_Asm_16: Spacing = 1; return ARM::VLD2LNd16_UPD;
6852 case ARM::VLD2LNdWB_register_Asm_32: Spacing = 1; return ARM::VLD2LNd32_UPD;
6853 case ARM::VLD2LNqWB_register_Asm_16: Spacing = 2; return ARM::VLD2LNq16_UPD;
6854 case ARM::VLD2LNqWB_register_Asm_32: Spacing = 2; return ARM::VLD2LNq32_UPD;
6855 case ARM::VLD2LNdAsm_8: Spacing = 1; return ARM::VLD2LNd8;
6856 case ARM::VLD2LNdAsm_16: Spacing = 1; return ARM::VLD2LNd16;
6857 case ARM::VLD2LNdAsm_32: Spacing = 1; return ARM::VLD2LNd32;
6858 case ARM::VLD2LNqAsm_16: Spacing = 2; return ARM::VLD2LNq16;
6859 case ARM::VLD2LNqAsm_32: Spacing = 2; return ARM::VLD2LNq32;
6862 case ARM::VLD3DUPdWB_fixed_Asm_8: Spacing = 1; return ARM::VLD3DUPd8_UPD;
6863 case ARM::VLD3DUPdWB_fixed_Asm_16: Spacing = 1; return ARM::VLD3DUPd16_UPD;
6864 case ARM::VLD3DUPdWB_fixed_Asm_32: Spacing = 1; return ARM::VLD3DUPd32_UPD;
6865 case ARM::VLD3DUPqWB_fixed_Asm_8: Spacing = 1; return ARM::VLD3DUPq8_UPD;
6866 case ARM::VLD3DUPqWB_fixed_Asm_16: Spacing = 2; return ARM::VLD3DUPq16_UPD;
6867 case ARM::VLD3DUPqWB_fixed_Asm_32: Spacing = 2; return ARM::VLD3DUPq32_UPD;
6868 case ARM::VLD3DUPdWB_register_Asm_8: Spacing = 1; return ARM::VLD3DUPd8_UPD;
6869 case ARM::VLD3DUPdWB_register_Asm_16: Spacing = 1; return ARM::VLD3DUPd16_UPD;
6870 case ARM::VLD3DUPdWB_register_Asm_32: Spacing = 1; return ARM::VLD3DUPd32_UPD;
6871 case ARM::VLD3DUPqWB_register_Asm_8: Spacing = 2; return ARM::VLD3DUPq8_UPD;
6872 case ARM::VLD3DUPqWB_register_Asm_16: Spacing = 2; return ARM::VLD3DUPq16_UPD;
6873 case ARM::VLD3DUPqWB_register_Asm_32: Spacing = 2; return ARM::VLD3DUPq32_UPD;
6874 case ARM::VLD3DUPdAsm_8: Spacing = 1; return ARM::VLD3DUPd8;
6875 case ARM::VLD3DUPdAsm_16: Spacing = 1; return ARM::VLD3DUPd16;
6876 case ARM::VLD3DUPdAsm_32: Spacing = 1; return ARM::VLD3DUPd32;
6877 case ARM::VLD3DUPqAsm_8: Spacing = 2; return ARM::VLD3DUPq8;
6878 case ARM::VLD3DUPqAsm_16: Spacing = 2; return ARM::VLD3DUPq16;
6879 case ARM::VLD3DUPqAsm_32: Spacing = 2; return ARM::VLD3DUPq32;
6882 case ARM::VLD3LNdWB_fixed_Asm_8: Spacing = 1; return ARM::VLD3LNd8_UPD;
6883 case ARM::VLD3LNdWB_fixed_Asm_16: Spacing = 1; return ARM::VLD3LNd16_UPD;
6884 case ARM::VLD3LNdWB_fixed_Asm_32: Spacing = 1; return ARM::VLD3LNd32_UPD;
6885 case ARM::VLD3LNqWB_fixed_Asm_16: Spacing = 1; return ARM::VLD3LNq16_UPD;
6886 case ARM::VLD3LNqWB_fixed_Asm_32: Spacing = 2; return ARM::VLD3LNq32_UPD;
6887 case ARM::VLD3LNdWB_register_Asm_8: Spacing = 1; return ARM::VLD3LNd8_UPD;
6888 case ARM::VLD3LNdWB_register_Asm_16: Spacing = 1; return ARM::VLD3LNd16_UPD;
6889 case ARM::VLD3LNdWB_register_Asm_32: Spacing = 1; return ARM::VLD3LNd32_UPD;
6890 case ARM::VLD3LNqWB_register_Asm_16: Spacing = 2; return ARM::VLD3LNq16_UPD;
6891 case ARM::VLD3LNqWB_register_Asm_32: Spacing = 2; return ARM::VLD3LNq32_UPD;
6892 case ARM::VLD3LNdAsm_8: Spacing = 1; return ARM::VLD3LNd8;
6893 case ARM::VLD3LNdAsm_16: Spacing = 1; return ARM::VLD3LNd16;
6894 case ARM::VLD3LNdAsm_32: Spacing = 1; return ARM::VLD3LNd32;
6895 case ARM::VLD3LNqAsm_16: Spacing = 2; return ARM::VLD3LNq16;
6896 case ARM::VLD3LNqAsm_32: Spacing = 2; return ARM::VLD3LNq32;
6899 case ARM::VLD3dWB_fixed_Asm_8: Spacing = 1; return ARM::VLD3d8_UPD;
6900 case ARM::VLD3dWB_fixed_Asm_16: Spacing = 1; return ARM::VLD3d16_UPD;
6901 case ARM::VLD3dWB_fixed_Asm_32: Spacing = 1; return ARM::VLD3d32_UPD;
6902 case ARM::VLD3qWB_fixed_Asm_8: Spacing = 2; return ARM::VLD3q8_UPD;
6903 case ARM::VLD3qWB_fixed_Asm_16: Spacing = 2; return ARM::VLD3q16_UPD;
6904 case ARM::VLD3qWB_fixed_Asm_32: Spacing = 2; return ARM::VLD3q32_UPD;
6905 case ARM::VLD3dWB_register_Asm_8: Spacing = 1; return ARM::VLD3d8_UPD;
6906 case ARM::VLD3dWB_register_Asm_16: Spacing = 1; return ARM::VLD3d16_UPD;
6907 case ARM::VLD3dWB_register_Asm_32: Spacing = 1; return ARM::VLD3d32_UPD;
6908 case ARM::VLD3qWB_register_Asm_8: Spacing = 2; return ARM::VLD3q8_UPD;
6909 case ARM::VLD3qWB_register_Asm_16: Spacing = 2; return ARM::VLD3q16_UPD;
6910 case ARM::VLD3qWB_register_Asm_32: Spacing = 2; return ARM::VLD3q32_UPD;
6911 case ARM::VLD3dAsm_8: Spacing = 1; return ARM::VLD3d8;
6912 case ARM::VLD3dAsm_16: Spacing = 1; return ARM::VLD3d16;
6913 case ARM::VLD3dAsm_32: Spacing = 1; return ARM::VLD3d32;
6914 case ARM::VLD3qAsm_8: Spacing = 2; return ARM::VLD3q8;
6915 case ARM::VLD3qAsm_16: Spacing = 2; return ARM::VLD3q16;
6916 case ARM::VLD3qAsm_32: Spacing = 2; return ARM::VLD3q32;
6919 case ARM::VLD4LNdWB_fixed_Asm_8: Spacing = 1; return ARM::VLD4LNd8_UPD;
6920 case ARM::VLD4LNdWB_fixed_Asm_16: Spacing = 1; return ARM::VLD4LNd16_UPD;
6921 case ARM::VLD4LNdWB_fixed_Asm_32: Spacing = 1; return ARM::VLD4LNd32_UPD;
6922 case ARM::VLD4LNqWB_fixed_Asm_16: Spacing = 2; return ARM::VLD4LNq16_UPD;
6923 case ARM::VLD4LNqWB_fixed_Asm_32: Spacing = 2; return ARM::VLD4LNq32_UPD;
6924 case ARM::VLD4LNdWB_register_Asm_8: Spacing = 1; return ARM::VLD4LNd8_UPD;
6925 case ARM::VLD4LNdWB_register_Asm_16: Spacing = 1; return ARM::VLD4LNd16_UPD;
6926 case ARM::VLD4LNdWB_register_Asm_32: Spacing = 1; return ARM::VLD4LNd32_UPD;
6927 case ARM::VLD4LNqWB_register_Asm_16: Spacing = 2; return ARM::VLD4LNq16_UPD;
6928 case ARM::VLD4LNqWB_register_Asm_32: Spacing = 2; return ARM::VLD4LNq32_UPD;
6929 case ARM::VLD4LNdAsm_8: Spacing = 1; return ARM::VLD4LNd8;
6930 case ARM::VLD4LNdAsm_16: Spacing = 1; return ARM::VLD4LNd16;
6931 case ARM::VLD4LNdAsm_32: Spacing = 1; return ARM::VLD4LNd32;
6932 case ARM::VLD4LNqAsm_16: Spacing = 2; return ARM::VLD4LNq16;
6933 case ARM::VLD4LNqAsm_32: Spacing = 2; return ARM::VLD4LNq32;
6936 case ARM::VLD4DUPdWB_fixed_Asm_8: Spacing = 1; return ARM::VLD4DUPd8_UPD;
6937 case ARM::VLD4DUPdWB_fixed_Asm_16: Spacing = 1; return ARM::VLD4DUPd16_UPD;
6938 case ARM::VLD4DUPdWB_fixed_Asm_32: Spacing = 1; return ARM::VLD4DUPd32_UPD;
6939 case ARM::VLD4DUPqWB_fixed_Asm_8: Spacing = 1; return ARM::VLD4DUPq8_UPD;
6940 case ARM::VLD4DUPqWB_fixed_Asm_16: Spacing = 1; return ARM::VLD4DUPq16_UPD;
6941 case ARM::VLD4DUPqWB_fixed_Asm_32: Spacing = 2; return ARM::VLD4DUPq32_UPD;
6942 case ARM::VLD4DUPdWB_register_Asm_8: Spacing = 1; return ARM::VLD4DUPd8_UPD;
6943 case ARM::VLD4DUPdWB_register_Asm_16: Spacing = 1; return ARM::VLD4DUPd16_UPD;
6944 case ARM::VLD4DUPdWB_register_Asm_32: Spacing = 1; return ARM::VLD4DUPd32_UPD;
6945 case ARM::VLD4DUPqWB_register_Asm_8: Spacing = 2; return ARM::VLD4DUPq8_UPD;
6946 case ARM::VLD4DUPqWB_register_Asm_16: Spacing = 2; return ARM::VLD4DUPq16_UPD;
6947 case ARM::VLD4DUPqWB_register_Asm_32: Spacing = 2; return ARM::VLD4DUPq32_UPD;
6948 case ARM::VLD4DUPdAsm_8: Spacing = 1; return ARM::VLD4DUPd8;
6949 case ARM::VLD4DUPdAsm_16: Spacing = 1; return ARM::VLD4DUPd16;
6950 case ARM::VLD4DUPdAsm_32: Spacing = 1; return ARM::VLD4DUPd32;
6951 case ARM::VLD4DUPqAsm_8: Spacing = 2; return ARM::VLD4DUPq8;
6952 case ARM::VLD4DUPqAsm_16: Spacing = 2; return ARM::VLD4DUPq16;
6953 case ARM::VLD4DUPqAsm_32: Spacing = 2; return ARM::VLD4DUPq32;
6956 case ARM::VLD4dWB_fixed_Asm_8: Spacing = 1; return ARM::VLD4d8_UPD;
6957 case ARM::VLD4dWB_fixed_Asm_16: Spacing = 1; return ARM::VLD4d16_UPD;
6958 case ARM::VLD4dWB_fixed_Asm_32: Spacing = 1; return ARM::VLD4d32_UPD;
6959 case ARM::VLD4qWB_fixed_Asm_8: Spacing = 2; return ARM::VLD4q8_UPD;
6960 case ARM::VLD4qWB_fixed_Asm_16: Spacing = 2; return ARM::VLD4q16_UPD;
6961 case ARM::VLD4qWB_fixed_Asm_32: Spacing = 2; return ARM::VLD4q32_UPD;
6962 case ARM::VLD4dWB_register_Asm_8: Spacing = 1; return ARM::VLD4d8_UPD;
6963 case ARM::VLD4dWB_register_Asm_16: Spacing = 1; return ARM::VLD4d16_UPD;
6964 case ARM::VLD4dWB_register_Asm_32: Spacing = 1; return ARM::VLD4d32_UPD;
6965 case ARM::VLD4qWB_register_Asm_8: Spacing = 2; return ARM::VLD4q8_UPD;
6966 case ARM::VLD4qWB_register_Asm_16: Spacing = 2; return ARM::VLD4q16_UPD;
6967 case ARM::VLD4qWB_register_Asm_32: Spacing = 2; return ARM::VLD4q32_UPD;
6968 case ARM::VLD4dAsm_8: Spacing = 1; return ARM::VLD4d8;
6969 case ARM::VLD4dAsm_16: Spacing = 1; return ARM::VLD4d16;
6970 case ARM::VLD4dAsm_32: Spacing = 1; return ARM::VLD4d32;
6971 case ARM::VLD4qAsm_8: Spacing = 2; return ARM::VLD4q8;
6972 case ARM::VLD4qAsm_16: Spacing = 2; return ARM::VLD4q16;
6973 case ARM::VLD4qAsm_32: Spacing = 2; return ARM::VLD4q32;
6977 bool ARMAsmParser::processInstruction(MCInst &Inst,
6978 const OperandVector &Operands,
6980 switch (Inst.getOpcode()) {
6981 // Alias for alternate form of 'ldr{,b}t Rt, [Rn], #imm' instruction.
6982 case ARM::LDRT_POST:
6983 case ARM::LDRBT_POST: {
6984 const unsigned Opcode =
6985 (Inst.getOpcode() == ARM::LDRT_POST) ? ARM::LDRT_POST_IMM
6986 : ARM::LDRBT_POST_IMM;
6988 TmpInst.setOpcode(Opcode);
6989 TmpInst.addOperand(Inst.getOperand(0));
6990 TmpInst.addOperand(Inst.getOperand(1));
6991 TmpInst.addOperand(Inst.getOperand(1));
6992 TmpInst.addOperand(MCOperand::createReg(0));
6993 TmpInst.addOperand(MCOperand::createImm(0));
6994 TmpInst.addOperand(Inst.getOperand(2));
6995 TmpInst.addOperand(Inst.getOperand(3));
6999 // Alias for alternate form of 'str{,b}t Rt, [Rn], #imm' instruction.
7000 case ARM::STRT_POST:
7001 case ARM::STRBT_POST: {
7002 const unsigned Opcode =
7003 (Inst.getOpcode() == ARM::STRT_POST) ? ARM::STRT_POST_IMM
7004 : ARM::STRBT_POST_IMM;
7006 TmpInst.setOpcode(Opcode);
7007 TmpInst.addOperand(Inst.getOperand(1));
7008 TmpInst.addOperand(Inst.getOperand(0));
7009 TmpInst.addOperand(Inst.getOperand(1));
7010 TmpInst.addOperand(MCOperand::createReg(0));
7011 TmpInst.addOperand(MCOperand::createImm(0));
7012 TmpInst.addOperand(Inst.getOperand(2));
7013 TmpInst.addOperand(Inst.getOperand(3));
7017 // Alias for alternate form of 'ADR Rd, #imm' instruction.
7019 if (Inst.getOperand(1).getReg() != ARM::PC ||
7020 Inst.getOperand(5).getReg() != 0 ||
7021 !(Inst.getOperand(2).isExpr() || Inst.getOperand(2).isImm()))
7024 TmpInst.setOpcode(ARM::ADR);
7025 TmpInst.addOperand(Inst.getOperand(0));
7026 if (Inst.getOperand(2).isImm()) {
7027 // Immediate (mod_imm) will be in its encoded form, we must unencode it
7028 // before passing it to the ADR instruction.
7029 unsigned Enc = Inst.getOperand(2).getImm();
7030 TmpInst.addOperand(MCOperand::createImm(
7031 ARM_AM::rotr32(Enc & 0xFF, (Enc & 0xF00) >> 7)));
7033 // Turn PC-relative expression into absolute expression.
7034 // Reading PC provides the start of the current instruction + 8 and
7035 // the transform to adr is biased by that.
7036 MCSymbol *Dot = getContext().createTempSymbol();
7038 const MCExpr *OpExpr = Inst.getOperand(2).getExpr();
7039 const MCExpr *InstPC = MCSymbolRefExpr::create(Dot,
7040 MCSymbolRefExpr::VK_None,
7042 const MCExpr *Const8 = MCConstantExpr::create(8, getContext());
7043 const MCExpr *ReadPC = MCBinaryExpr::createAdd(InstPC, Const8,
7045 const MCExpr *FixupAddr = MCBinaryExpr::createAdd(ReadPC, OpExpr,
7047 TmpInst.addOperand(MCOperand::createExpr(FixupAddr));
7049 TmpInst.addOperand(Inst.getOperand(3));
7050 TmpInst.addOperand(Inst.getOperand(4));
7054 // Aliases for alternate PC+imm syntax of LDR instructions.
7055 case ARM::t2LDRpcrel:
7056 // Select the narrow version if the immediate will fit.
7057 if (Inst.getOperand(1).getImm() > 0 &&
7058 Inst.getOperand(1).getImm() <= 0xff &&
7059 !(static_cast<ARMOperand &>(*Operands[2]).isToken() &&
7060 static_cast<ARMOperand &>(*Operands[2]).getToken() == ".w"))
7061 Inst.setOpcode(ARM::tLDRpci);
7063 Inst.setOpcode(ARM::t2LDRpci);
7065 case ARM::t2LDRBpcrel:
7066 Inst.setOpcode(ARM::t2LDRBpci);
7068 case ARM::t2LDRHpcrel:
7069 Inst.setOpcode(ARM::t2LDRHpci);
7071 case ARM::t2LDRSBpcrel:
7072 Inst.setOpcode(ARM::t2LDRSBpci);
7074 case ARM::t2LDRSHpcrel:
7075 Inst.setOpcode(ARM::t2LDRSHpci);
7077 case ARM::LDRConstPool:
7078 case ARM::tLDRConstPool:
7079 case ARM::t2LDRConstPool: {
7080 // Pseudo instruction ldr rt, =immediate is converted to a
7081 // MOV rt, immediate if immediate is known and representable
7082 // otherwise we create a constant pool entry that we load from.
7084 if (Inst.getOpcode() == ARM::LDRConstPool)
7085 TmpInst.setOpcode(ARM::LDRi12);
7086 else if (Inst.getOpcode() == ARM::tLDRConstPool)
7087 TmpInst.setOpcode(ARM::tLDRpci);
7088 else if (Inst.getOpcode() == ARM::t2LDRConstPool)
7089 TmpInst.setOpcode(ARM::t2LDRpci);
7090 const ARMOperand &PoolOperand =
7091 (static_cast<ARMOperand &>(*Operands[2]).isToken() &&
7092 static_cast<ARMOperand &>(*Operands[2]).getToken() == ".w") ?
7093 static_cast<ARMOperand &>(*Operands[4]) :
7094 static_cast<ARMOperand &>(*Operands[3]);
7095 const MCExpr *SubExprVal = PoolOperand.getConstantPoolImm();
7096 // If SubExprVal is a constant we may be able to use a MOV
7097 if (isa<MCConstantExpr>(SubExprVal) &&
7098 Inst.getOperand(0).getReg() != ARM::PC &&
7099 Inst.getOperand(0).getReg() != ARM::SP) {
7101 (int64_t) (cast<MCConstantExpr>(SubExprVal))->getValue();
7103 bool MovHasS = true;
7104 if (Inst.getOpcode() == ARM::LDRConstPool) {
7106 if (ARM_AM::getSOImmVal(Value) != -1) {
7107 Value = ARM_AM::getSOImmVal(Value);
7108 TmpInst.setOpcode(ARM::MOVi);
7110 else if (ARM_AM::getSOImmVal(~Value) != -1) {
7111 Value = ARM_AM::getSOImmVal(~Value);
7112 TmpInst.setOpcode(ARM::MVNi);
7114 else if (hasV6T2Ops() &&
7115 Value >=0 && Value < 65536) {
7116 TmpInst.setOpcode(ARM::MOVi16);
7123 // Thumb/Thumb2 Constant
7125 ARM_AM::getT2SOImmVal(Value) != -1)
7126 TmpInst.setOpcode(ARM::t2MOVi);
7127 else if (hasThumb2() &&
7128 ARM_AM::getT2SOImmVal(~Value) != -1) {
7129 TmpInst.setOpcode(ARM::t2MVNi);
7132 else if (hasV8MBaseline() &&
7133 Value >=0 && Value < 65536) {
7134 TmpInst.setOpcode(ARM::t2MOVi16);
7141 TmpInst.addOperand(Inst.getOperand(0)); // Rt
7142 TmpInst.addOperand(MCOperand::createImm(Value)); // Immediate
7143 TmpInst.addOperand(Inst.getOperand(2)); // CondCode
7144 TmpInst.addOperand(Inst.getOperand(3)); // CondCode
7146 TmpInst.addOperand(MCOperand::createReg(0)); // S
7151 // No opportunity to use MOV/MVN create constant pool
7152 const MCExpr *CPLoc =
7153 getTargetStreamer().addConstantPoolEntry(SubExprVal,
7154 PoolOperand.getStartLoc());
7155 TmpInst.addOperand(Inst.getOperand(0)); // Rt
7156 TmpInst.addOperand(MCOperand::createExpr(CPLoc)); // offset to constpool
7157 if (TmpInst.getOpcode() == ARM::LDRi12)
7158 TmpInst.addOperand(MCOperand::createImm(0)); // unused offset
7159 TmpInst.addOperand(Inst.getOperand(2)); // CondCode
7160 TmpInst.addOperand(Inst.getOperand(3)); // CondCode
7164 // Handle NEON VST complex aliases.
7165 case ARM::VST1LNdWB_register_Asm_8:
7166 case ARM::VST1LNdWB_register_Asm_16:
7167 case ARM::VST1LNdWB_register_Asm_32: {
7169 // Shuffle the operands around so the lane index operand is in the
7172 TmpInst.setOpcode(getRealVSTOpcode(Inst.getOpcode(), Spacing));
7173 TmpInst.addOperand(Inst.getOperand(2)); // Rn_wb
7174 TmpInst.addOperand(Inst.getOperand(2)); // Rn
7175 TmpInst.addOperand(Inst.getOperand(3)); // alignment
7176 TmpInst.addOperand(Inst.getOperand(4)); // Rm
7177 TmpInst.addOperand(Inst.getOperand(0)); // Vd
7178 TmpInst.addOperand(Inst.getOperand(1)); // lane
7179 TmpInst.addOperand(Inst.getOperand(5)); // CondCode
7180 TmpInst.addOperand(Inst.getOperand(6));
7185 case ARM::VST2LNdWB_register_Asm_8:
7186 case ARM::VST2LNdWB_register_Asm_16:
7187 case ARM::VST2LNdWB_register_Asm_32:
7188 case ARM::VST2LNqWB_register_Asm_16:
7189 case ARM::VST2LNqWB_register_Asm_32: {
7191 // Shuffle the operands around so the lane index operand is in the
7194 TmpInst.setOpcode(getRealVSTOpcode(Inst.getOpcode(), Spacing));
7195 TmpInst.addOperand(Inst.getOperand(2)); // Rn_wb
7196 TmpInst.addOperand(Inst.getOperand(2)); // Rn
7197 TmpInst.addOperand(Inst.getOperand(3)); // alignment
7198 TmpInst.addOperand(Inst.getOperand(4)); // Rm
7199 TmpInst.addOperand(Inst.getOperand(0)); // Vd
7200 TmpInst.addOperand(MCOperand::createReg(Inst.getOperand(0).getReg() +
7202 TmpInst.addOperand(Inst.getOperand(1)); // lane
7203 TmpInst.addOperand(Inst.getOperand(5)); // CondCode
7204 TmpInst.addOperand(Inst.getOperand(6));
7209 case ARM::VST3LNdWB_register_Asm_8:
7210 case ARM::VST3LNdWB_register_Asm_16:
7211 case ARM::VST3LNdWB_register_Asm_32:
7212 case ARM::VST3LNqWB_register_Asm_16:
7213 case ARM::VST3LNqWB_register_Asm_32: {
7215 // Shuffle the operands around so the lane index operand is in the
7218 TmpInst.setOpcode(getRealVSTOpcode(Inst.getOpcode(), Spacing));
7219 TmpInst.addOperand(Inst.getOperand(2)); // Rn_wb
7220 TmpInst.addOperand(Inst.getOperand(2)); // Rn
7221 TmpInst.addOperand(Inst.getOperand(3)); // alignment
7222 TmpInst.addOperand(Inst.getOperand(4)); // Rm
7223 TmpInst.addOperand(Inst.getOperand(0)); // Vd
7224 TmpInst.addOperand(MCOperand::createReg(Inst.getOperand(0).getReg() +
7226 TmpInst.addOperand(MCOperand::createReg(Inst.getOperand(0).getReg() +
7228 TmpInst.addOperand(Inst.getOperand(1)); // lane
7229 TmpInst.addOperand(Inst.getOperand(5)); // CondCode
7230 TmpInst.addOperand(Inst.getOperand(6));
7235 case ARM::VST4LNdWB_register_Asm_8:
7236 case ARM::VST4LNdWB_register_Asm_16:
7237 case ARM::VST4LNdWB_register_Asm_32:
7238 case ARM::VST4LNqWB_register_Asm_16:
7239 case ARM::VST4LNqWB_register_Asm_32: {
7241 // Shuffle the operands around so the lane index operand is in the
7244 TmpInst.setOpcode(getRealVSTOpcode(Inst.getOpcode(), Spacing));
7245 TmpInst.addOperand(Inst.getOperand(2)); // Rn_wb
7246 TmpInst.addOperand(Inst.getOperand(2)); // Rn
7247 TmpInst.addOperand(Inst.getOperand(3)); // alignment
7248 TmpInst.addOperand(Inst.getOperand(4)); // Rm
7249 TmpInst.addOperand(Inst.getOperand(0)); // Vd
7250 TmpInst.addOperand(MCOperand::createReg(Inst.getOperand(0).getReg() +
7252 TmpInst.addOperand(MCOperand::createReg(Inst.getOperand(0).getReg() +
7254 TmpInst.addOperand(MCOperand::createReg(Inst.getOperand(0).getReg() +
7256 TmpInst.addOperand(Inst.getOperand(1)); // lane
7257 TmpInst.addOperand(Inst.getOperand(5)); // CondCode
7258 TmpInst.addOperand(Inst.getOperand(6));
7263 case ARM::VST1LNdWB_fixed_Asm_8:
7264 case ARM::VST1LNdWB_fixed_Asm_16:
7265 case ARM::VST1LNdWB_fixed_Asm_32: {
7267 // Shuffle the operands around so the lane index operand is in the
7270 TmpInst.setOpcode(getRealVSTOpcode(Inst.getOpcode(), Spacing));
7271 TmpInst.addOperand(Inst.getOperand(2)); // Rn_wb
7272 TmpInst.addOperand(Inst.getOperand(2)); // Rn
7273 TmpInst.addOperand(Inst.getOperand(3)); // alignment
7274 TmpInst.addOperand(MCOperand::createReg(0)); // Rm
7275 TmpInst.addOperand(Inst.getOperand(0)); // Vd
7276 TmpInst.addOperand(Inst.getOperand(1)); // lane
7277 TmpInst.addOperand(Inst.getOperand(4)); // CondCode
7278 TmpInst.addOperand(Inst.getOperand(5));
7283 case ARM::VST2LNdWB_fixed_Asm_8:
7284 case ARM::VST2LNdWB_fixed_Asm_16:
7285 case ARM::VST2LNdWB_fixed_Asm_32:
7286 case ARM::VST2LNqWB_fixed_Asm_16:
7287 case ARM::VST2LNqWB_fixed_Asm_32: {
7289 // Shuffle the operands around so the lane index operand is in the
7292 TmpInst.setOpcode(getRealVSTOpcode(Inst.getOpcode(), Spacing));
7293 TmpInst.addOperand(Inst.getOperand(2)); // Rn_wb
7294 TmpInst.addOperand(Inst.getOperand(2)); // Rn
7295 TmpInst.addOperand(Inst.getOperand(3)); // alignment
7296 TmpInst.addOperand(MCOperand::createReg(0)); // Rm
7297 TmpInst.addOperand(Inst.getOperand(0)); // Vd
7298 TmpInst.addOperand(MCOperand::createReg(Inst.getOperand(0).getReg() +
7300 TmpInst.addOperand(Inst.getOperand(1)); // lane
7301 TmpInst.addOperand(Inst.getOperand(4)); // CondCode
7302 TmpInst.addOperand(Inst.getOperand(5));
7307 case ARM::VST3LNdWB_fixed_Asm_8:
7308 case ARM::VST3LNdWB_fixed_Asm_16:
7309 case ARM::VST3LNdWB_fixed_Asm_32:
7310 case ARM::VST3LNqWB_fixed_Asm_16:
7311 case ARM::VST3LNqWB_fixed_Asm_32: {
7313 // Shuffle the operands around so the lane index operand is in the
7316 TmpInst.setOpcode(getRealVSTOpcode(Inst.getOpcode(), Spacing));
7317 TmpInst.addOperand(Inst.getOperand(2)); // Rn_wb
7318 TmpInst.addOperand(Inst.getOperand(2)); // Rn
7319 TmpInst.addOperand(Inst.getOperand(3)); // alignment
7320 TmpInst.addOperand(MCOperand::createReg(0)); // Rm
7321 TmpInst.addOperand(Inst.getOperand(0)); // Vd
7322 TmpInst.addOperand(MCOperand::createReg(Inst.getOperand(0).getReg() +
7324 TmpInst.addOperand(MCOperand::createReg(Inst.getOperand(0).getReg() +
7326 TmpInst.addOperand(Inst.getOperand(1)); // lane
7327 TmpInst.addOperand(Inst.getOperand(4)); // CondCode
7328 TmpInst.addOperand(Inst.getOperand(5));
7333 case ARM::VST4LNdWB_fixed_Asm_8:
7334 case ARM::VST4LNdWB_fixed_Asm_16:
7335 case ARM::VST4LNdWB_fixed_Asm_32:
7336 case ARM::VST4LNqWB_fixed_Asm_16:
7337 case ARM::VST4LNqWB_fixed_Asm_32: {
7339 // Shuffle the operands around so the lane index operand is in the
7342 TmpInst.setOpcode(getRealVSTOpcode(Inst.getOpcode(), Spacing));
7343 TmpInst.addOperand(Inst.getOperand(2)); // Rn_wb
7344 TmpInst.addOperand(Inst.getOperand(2)); // Rn
7345 TmpInst.addOperand(Inst.getOperand(3)); // alignment
7346 TmpInst.addOperand(MCOperand::createReg(0)); // Rm
7347 TmpInst.addOperand(Inst.getOperand(0)); // Vd
7348 TmpInst.addOperand(MCOperand::createReg(Inst.getOperand(0).getReg() +
7350 TmpInst.addOperand(MCOperand::createReg(Inst.getOperand(0).getReg() +
7352 TmpInst.addOperand(MCOperand::createReg(Inst.getOperand(0).getReg() +
7354 TmpInst.addOperand(Inst.getOperand(1)); // lane
7355 TmpInst.addOperand(Inst.getOperand(4)); // CondCode
7356 TmpInst.addOperand(Inst.getOperand(5));
7361 case ARM::VST1LNdAsm_8:
7362 case ARM::VST1LNdAsm_16:
7363 case ARM::VST1LNdAsm_32: {
7365 // Shuffle the operands around so the lane index operand is in the
7368 TmpInst.setOpcode(getRealVSTOpcode(Inst.getOpcode(), Spacing));
7369 TmpInst.addOperand(Inst.getOperand(2)); // Rn
7370 TmpInst.addOperand(Inst.getOperand(3)); // alignment
7371 TmpInst.addOperand(Inst.getOperand(0)); // Vd
7372 TmpInst.addOperand(Inst.getOperand(1)); // lane
7373 TmpInst.addOperand(Inst.getOperand(4)); // CondCode
7374 TmpInst.addOperand(Inst.getOperand(5));
7379 case ARM::VST2LNdAsm_8:
7380 case ARM::VST2LNdAsm_16:
7381 case ARM::VST2LNdAsm_32:
7382 case ARM::VST2LNqAsm_16:
7383 case ARM::VST2LNqAsm_32: {
7385 // Shuffle the operands around so the lane index operand is in the
7388 TmpInst.setOpcode(getRealVSTOpcode(Inst.getOpcode(), Spacing));
7389 TmpInst.addOperand(Inst.getOperand(2)); // Rn
7390 TmpInst.addOperand(Inst.getOperand(3)); // alignment
7391 TmpInst.addOperand(Inst.getOperand(0)); // Vd
7392 TmpInst.addOperand(MCOperand::createReg(Inst.getOperand(0).getReg() +
7394 TmpInst.addOperand(Inst.getOperand(1)); // lane
7395 TmpInst.addOperand(Inst.getOperand(4)); // CondCode
7396 TmpInst.addOperand(Inst.getOperand(5));
7401 case ARM::VST3LNdAsm_8:
7402 case ARM::VST3LNdAsm_16:
7403 case ARM::VST3LNdAsm_32:
7404 case ARM::VST3LNqAsm_16:
7405 case ARM::VST3LNqAsm_32: {
7407 // Shuffle the operands around so the lane index operand is in the
7410 TmpInst.setOpcode(getRealVSTOpcode(Inst.getOpcode(), Spacing));
7411 TmpInst.addOperand(Inst.getOperand(2)); // Rn
7412 TmpInst.addOperand(Inst.getOperand(3)); // alignment
7413 TmpInst.addOperand(Inst.getOperand(0)); // Vd
7414 TmpInst.addOperand(MCOperand::createReg(Inst.getOperand(0).getReg() +
7416 TmpInst.addOperand(MCOperand::createReg(Inst.getOperand(0).getReg() +
7418 TmpInst.addOperand(Inst.getOperand(1)); // lane
7419 TmpInst.addOperand(Inst.getOperand(4)); // CondCode
7420 TmpInst.addOperand(Inst.getOperand(5));
7425 case ARM::VST4LNdAsm_8:
7426 case ARM::VST4LNdAsm_16:
7427 case ARM::VST4LNdAsm_32:
7428 case ARM::VST4LNqAsm_16:
7429 case ARM::VST4LNqAsm_32: {
7431 // Shuffle the operands around so the lane index operand is in the
7434 TmpInst.setOpcode(getRealVSTOpcode(Inst.getOpcode(), Spacing));
7435 TmpInst.addOperand(Inst.getOperand(2)); // Rn
7436 TmpInst.addOperand(Inst.getOperand(3)); // alignment
7437 TmpInst.addOperand(Inst.getOperand(0)); // Vd
7438 TmpInst.addOperand(MCOperand::createReg(Inst.getOperand(0).getReg() +
7440 TmpInst.addOperand(MCOperand::createReg(Inst.getOperand(0).getReg() +
7442 TmpInst.addOperand(MCOperand::createReg(Inst.getOperand(0).getReg() +
7444 TmpInst.addOperand(Inst.getOperand(1)); // lane
7445 TmpInst.addOperand(Inst.getOperand(4)); // CondCode
7446 TmpInst.addOperand(Inst.getOperand(5));
7451 // Handle NEON VLD complex aliases.
7452 case ARM::VLD1LNdWB_register_Asm_8:
7453 case ARM::VLD1LNdWB_register_Asm_16:
7454 case ARM::VLD1LNdWB_register_Asm_32: {
7456 // Shuffle the operands around so the lane index operand is in the
7459 TmpInst.setOpcode(getRealVLDOpcode(Inst.getOpcode(), Spacing));
7460 TmpInst.addOperand(Inst.getOperand(0)); // Vd
7461 TmpInst.addOperand(Inst.getOperand(2)); // Rn_wb
7462 TmpInst.addOperand(Inst.getOperand(2)); // Rn
7463 TmpInst.addOperand(Inst.getOperand(3)); // alignment
7464 TmpInst.addOperand(Inst.getOperand(4)); // Rm
7465 TmpInst.addOperand(Inst.getOperand(0)); // Tied operand src (== Vd)
7466 TmpInst.addOperand(Inst.getOperand(1)); // lane
7467 TmpInst.addOperand(Inst.getOperand(5)); // CondCode
7468 TmpInst.addOperand(Inst.getOperand(6));
7473 case ARM::VLD2LNdWB_register_Asm_8:
7474 case ARM::VLD2LNdWB_register_Asm_16:
7475 case ARM::VLD2LNdWB_register_Asm_32:
7476 case ARM::VLD2LNqWB_register_Asm_16:
7477 case ARM::VLD2LNqWB_register_Asm_32: {
7479 // Shuffle the operands around so the lane index operand is in the
7482 TmpInst.setOpcode(getRealVLDOpcode(Inst.getOpcode(), Spacing));
7483 TmpInst.addOperand(Inst.getOperand(0)); // Vd
7484 TmpInst.addOperand(MCOperand::createReg(Inst.getOperand(0).getReg() +
7486 TmpInst.addOperand(Inst.getOperand(2)); // Rn_wb
7487 TmpInst.addOperand(Inst.getOperand(2)); // Rn
7488 TmpInst.addOperand(Inst.getOperand(3)); // alignment
7489 TmpInst.addOperand(Inst.getOperand(4)); // Rm
7490 TmpInst.addOperand(Inst.getOperand(0)); // Tied operand src (== Vd)
7491 TmpInst.addOperand(MCOperand::createReg(Inst.getOperand(0).getReg() +
7493 TmpInst.addOperand(Inst.getOperand(1)); // lane
7494 TmpInst.addOperand(Inst.getOperand(5)); // CondCode
7495 TmpInst.addOperand(Inst.getOperand(6));
7500 case ARM::VLD3LNdWB_register_Asm_8:
7501 case ARM::VLD3LNdWB_register_Asm_16:
7502 case ARM::VLD3LNdWB_register_Asm_32:
7503 case ARM::VLD3LNqWB_register_Asm_16:
7504 case ARM::VLD3LNqWB_register_Asm_32: {
7506 // Shuffle the operands around so the lane index operand is in the
7509 TmpInst.setOpcode(getRealVLDOpcode(Inst.getOpcode(), Spacing));
7510 TmpInst.addOperand(Inst.getOperand(0)); // Vd
7511 TmpInst.addOperand(MCOperand::createReg(Inst.getOperand(0).getReg() +
7513 TmpInst.addOperand(MCOperand::createReg(Inst.getOperand(0).getReg() +
7515 TmpInst.addOperand(Inst.getOperand(2)); // Rn_wb
7516 TmpInst.addOperand(Inst.getOperand(2)); // Rn
7517 TmpInst.addOperand(Inst.getOperand(3)); // alignment
7518 TmpInst.addOperand(Inst.getOperand(4)); // Rm
7519 TmpInst.addOperand(Inst.getOperand(0)); // Tied operand src (== Vd)
7520 TmpInst.addOperand(MCOperand::createReg(Inst.getOperand(0).getReg() +
7522 TmpInst.addOperand(MCOperand::createReg(Inst.getOperand(0).getReg() +
7524 TmpInst.addOperand(Inst.getOperand(1)); // lane
7525 TmpInst.addOperand(Inst.getOperand(5)); // CondCode
7526 TmpInst.addOperand(Inst.getOperand(6));
7531 case ARM::VLD4LNdWB_register_Asm_8:
7532 case ARM::VLD4LNdWB_register_Asm_16:
7533 case ARM::VLD4LNdWB_register_Asm_32:
7534 case ARM::VLD4LNqWB_register_Asm_16:
7535 case ARM::VLD4LNqWB_register_Asm_32: {
7537 // Shuffle the operands around so the lane index operand is in the
7540 TmpInst.setOpcode(getRealVLDOpcode(Inst.getOpcode(), Spacing));
7541 TmpInst.addOperand(Inst.getOperand(0)); // Vd
7542 TmpInst.addOperand(MCOperand::createReg(Inst.getOperand(0).getReg() +
7544 TmpInst.addOperand(MCOperand::createReg(Inst.getOperand(0).getReg() +
7546 TmpInst.addOperand(MCOperand::createReg(Inst.getOperand(0).getReg() +
7548 TmpInst.addOperand(Inst.getOperand(2)); // Rn_wb
7549 TmpInst.addOperand(Inst.getOperand(2)); // Rn
7550 TmpInst.addOperand(Inst.getOperand(3)); // alignment
7551 TmpInst.addOperand(Inst.getOperand(4)); // Rm
7552 TmpInst.addOperand(Inst.getOperand(0)); // Tied operand src (== Vd)
7553 TmpInst.addOperand(MCOperand::createReg(Inst.getOperand(0).getReg() +
7555 TmpInst.addOperand(MCOperand::createReg(Inst.getOperand(0).getReg() +
7557 TmpInst.addOperand(MCOperand::createReg(Inst.getOperand(0).getReg() +
7559 TmpInst.addOperand(Inst.getOperand(1)); // lane
7560 TmpInst.addOperand(Inst.getOperand(5)); // CondCode
7561 TmpInst.addOperand(Inst.getOperand(6));
7566 case ARM::VLD1LNdWB_fixed_Asm_8:
7567 case ARM::VLD1LNdWB_fixed_Asm_16:
7568 case ARM::VLD1LNdWB_fixed_Asm_32: {
7570 // Shuffle the operands around so the lane index operand is in the
7573 TmpInst.setOpcode(getRealVLDOpcode(Inst.getOpcode(), Spacing));
7574 TmpInst.addOperand(Inst.getOperand(0)); // Vd
7575 TmpInst.addOperand(Inst.getOperand(2)); // Rn_wb
7576 TmpInst.addOperand(Inst.getOperand(2)); // Rn
7577 TmpInst.addOperand(Inst.getOperand(3)); // alignment
7578 TmpInst.addOperand(MCOperand::createReg(0)); // Rm
7579 TmpInst.addOperand(Inst.getOperand(0)); // Tied operand src (== Vd)
7580 TmpInst.addOperand(Inst.getOperand(1)); // lane
7581 TmpInst.addOperand(Inst.getOperand(4)); // CondCode
7582 TmpInst.addOperand(Inst.getOperand(5));
7587 case ARM::VLD2LNdWB_fixed_Asm_8:
7588 case ARM::VLD2LNdWB_fixed_Asm_16:
7589 case ARM::VLD2LNdWB_fixed_Asm_32:
7590 case ARM::VLD2LNqWB_fixed_Asm_16:
7591 case ARM::VLD2LNqWB_fixed_Asm_32: {
7593 // Shuffle the operands around so the lane index operand is in the
7596 TmpInst.setOpcode(getRealVLDOpcode(Inst.getOpcode(), Spacing));
7597 TmpInst.addOperand(Inst.getOperand(0)); // Vd
7598 TmpInst.addOperand(MCOperand::createReg(Inst.getOperand(0).getReg() +
7600 TmpInst.addOperand(Inst.getOperand(2)); // Rn_wb
7601 TmpInst.addOperand(Inst.getOperand(2)); // Rn
7602 TmpInst.addOperand(Inst.getOperand(3)); // alignment
7603 TmpInst.addOperand(MCOperand::createReg(0)); // Rm
7604 TmpInst.addOperand(Inst.getOperand(0)); // Tied operand src (== Vd)
7605 TmpInst.addOperand(MCOperand::createReg(Inst.getOperand(0).getReg() +
7607 TmpInst.addOperand(Inst.getOperand(1)); // lane
7608 TmpInst.addOperand(Inst.getOperand(4)); // CondCode
7609 TmpInst.addOperand(Inst.getOperand(5));
7614 case ARM::VLD3LNdWB_fixed_Asm_8:
7615 case ARM::VLD3LNdWB_fixed_Asm_16:
7616 case ARM::VLD3LNdWB_fixed_Asm_32:
7617 case ARM::VLD3LNqWB_fixed_Asm_16:
7618 case ARM::VLD3LNqWB_fixed_Asm_32: {
7620 // Shuffle the operands around so the lane index operand is in the
7623 TmpInst.setOpcode(getRealVLDOpcode(Inst.getOpcode(), Spacing));
7624 TmpInst.addOperand(Inst.getOperand(0)); // Vd
7625 TmpInst.addOperand(MCOperand::createReg(Inst.getOperand(0).getReg() +
7627 TmpInst.addOperand(MCOperand::createReg(Inst.getOperand(0).getReg() +
7629 TmpInst.addOperand(Inst.getOperand(2)); // Rn_wb
7630 TmpInst.addOperand(Inst.getOperand(2)); // Rn
7631 TmpInst.addOperand(Inst.getOperand(3)); // alignment
7632 TmpInst.addOperand(MCOperand::createReg(0)); // Rm
7633 TmpInst.addOperand(Inst.getOperand(0)); // Tied operand src (== Vd)
7634 TmpInst.addOperand(MCOperand::createReg(Inst.getOperand(0).getReg() +
7636 TmpInst.addOperand(MCOperand::createReg(Inst.getOperand(0).getReg() +
7638 TmpInst.addOperand(Inst.getOperand(1)); // lane
7639 TmpInst.addOperand(Inst.getOperand(4)); // CondCode
7640 TmpInst.addOperand(Inst.getOperand(5));
7645 case ARM::VLD4LNdWB_fixed_Asm_8:
7646 case ARM::VLD4LNdWB_fixed_Asm_16:
7647 case ARM::VLD4LNdWB_fixed_Asm_32:
7648 case ARM::VLD4LNqWB_fixed_Asm_16:
7649 case ARM::VLD4LNqWB_fixed_Asm_32: {
7651 // Shuffle the operands around so the lane index operand is in the
7654 TmpInst.setOpcode(getRealVLDOpcode(Inst.getOpcode(), Spacing));
7655 TmpInst.addOperand(Inst.getOperand(0)); // Vd
7656 TmpInst.addOperand(MCOperand::createReg(Inst.getOperand(0).getReg() +
7658 TmpInst.addOperand(MCOperand::createReg(Inst.getOperand(0).getReg() +
7660 TmpInst.addOperand(MCOperand::createReg(Inst.getOperand(0).getReg() +
7662 TmpInst.addOperand(Inst.getOperand(2)); // Rn_wb
7663 TmpInst.addOperand(Inst.getOperand(2)); // Rn
7664 TmpInst.addOperand(Inst.getOperand(3)); // alignment
7665 TmpInst.addOperand(MCOperand::createReg(0)); // Rm
7666 TmpInst.addOperand(Inst.getOperand(0)); // Tied operand src (== Vd)
7667 TmpInst.addOperand(MCOperand::createReg(Inst.getOperand(0).getReg() +
7669 TmpInst.addOperand(MCOperand::createReg(Inst.getOperand(0).getReg() +
7671 TmpInst.addOperand(MCOperand::createReg(Inst.getOperand(0).getReg() +
7673 TmpInst.addOperand(Inst.getOperand(1)); // lane
7674 TmpInst.addOperand(Inst.getOperand(4)); // CondCode
7675 TmpInst.addOperand(Inst.getOperand(5));
7680 case ARM::VLD1LNdAsm_8:
7681 case ARM::VLD1LNdAsm_16:
7682 case ARM::VLD1LNdAsm_32: {
7684 // Shuffle the operands around so the lane index operand is in the
7687 TmpInst.setOpcode(getRealVLDOpcode(Inst.getOpcode(), Spacing));
7688 TmpInst.addOperand(Inst.getOperand(0)); // Vd
7689 TmpInst.addOperand(Inst.getOperand(2)); // Rn
7690 TmpInst.addOperand(Inst.getOperand(3)); // alignment
7691 TmpInst.addOperand(Inst.getOperand(0)); // Tied operand src (== Vd)
7692 TmpInst.addOperand(Inst.getOperand(1)); // lane
7693 TmpInst.addOperand(Inst.getOperand(4)); // CondCode
7694 TmpInst.addOperand(Inst.getOperand(5));
7699 case ARM::VLD2LNdAsm_8:
7700 case ARM::VLD2LNdAsm_16:
7701 case ARM::VLD2LNdAsm_32:
7702 case ARM::VLD2LNqAsm_16:
7703 case ARM::VLD2LNqAsm_32: {
7705 // Shuffle the operands around so the lane index operand is in the
7708 TmpInst.setOpcode(getRealVLDOpcode(Inst.getOpcode(), Spacing));
7709 TmpInst.addOperand(Inst.getOperand(0)); // Vd
7710 TmpInst.addOperand(MCOperand::createReg(Inst.getOperand(0).getReg() +
7712 TmpInst.addOperand(Inst.getOperand(2)); // Rn
7713 TmpInst.addOperand(Inst.getOperand(3)); // alignment
7714 TmpInst.addOperand(Inst.getOperand(0)); // Tied operand src (== Vd)
7715 TmpInst.addOperand(MCOperand::createReg(Inst.getOperand(0).getReg() +
7717 TmpInst.addOperand(Inst.getOperand(1)); // lane
7718 TmpInst.addOperand(Inst.getOperand(4)); // CondCode
7719 TmpInst.addOperand(Inst.getOperand(5));
7724 case ARM::VLD3LNdAsm_8:
7725 case ARM::VLD3LNdAsm_16:
7726 case ARM::VLD3LNdAsm_32:
7727 case ARM::VLD3LNqAsm_16:
7728 case ARM::VLD3LNqAsm_32: {
7730 // Shuffle the operands around so the lane index operand is in the
7733 TmpInst.setOpcode(getRealVLDOpcode(Inst.getOpcode(), Spacing));
7734 TmpInst.addOperand(Inst.getOperand(0)); // Vd
7735 TmpInst.addOperand(MCOperand::createReg(Inst.getOperand(0).getReg() +
7737 TmpInst.addOperand(MCOperand::createReg(Inst.getOperand(0).getReg() +
7739 TmpInst.addOperand(Inst.getOperand(2)); // Rn
7740 TmpInst.addOperand(Inst.getOperand(3)); // alignment
7741 TmpInst.addOperand(Inst.getOperand(0)); // Tied operand src (== Vd)
7742 TmpInst.addOperand(MCOperand::createReg(Inst.getOperand(0).getReg() +
7744 TmpInst.addOperand(MCOperand::createReg(Inst.getOperand(0).getReg() +
7746 TmpInst.addOperand(Inst.getOperand(1)); // lane
7747 TmpInst.addOperand(Inst.getOperand(4)); // CondCode
7748 TmpInst.addOperand(Inst.getOperand(5));
7753 case ARM::VLD4LNdAsm_8:
7754 case ARM::VLD4LNdAsm_16:
7755 case ARM::VLD4LNdAsm_32:
7756 case ARM::VLD4LNqAsm_16:
7757 case ARM::VLD4LNqAsm_32: {
7759 // Shuffle the operands around so the lane index operand is in the
7762 TmpInst.setOpcode(getRealVLDOpcode(Inst.getOpcode(), Spacing));
7763 TmpInst.addOperand(Inst.getOperand(0)); // Vd
7764 TmpInst.addOperand(MCOperand::createReg(Inst.getOperand(0).getReg() +
7766 TmpInst.addOperand(MCOperand::createReg(Inst.getOperand(0).getReg() +
7768 TmpInst.addOperand(MCOperand::createReg(Inst.getOperand(0).getReg() +
7770 TmpInst.addOperand(Inst.getOperand(2)); // Rn
7771 TmpInst.addOperand(Inst.getOperand(3)); // alignment
7772 TmpInst.addOperand(Inst.getOperand(0)); // Tied operand src (== Vd)
7773 TmpInst.addOperand(MCOperand::createReg(Inst.getOperand(0).getReg() +
7775 TmpInst.addOperand(MCOperand::createReg(Inst.getOperand(0).getReg() +
7777 TmpInst.addOperand(MCOperand::createReg(Inst.getOperand(0).getReg() +
7779 TmpInst.addOperand(Inst.getOperand(1)); // lane
7780 TmpInst.addOperand(Inst.getOperand(4)); // CondCode
7781 TmpInst.addOperand(Inst.getOperand(5));
7786 // VLD3DUP single 3-element structure to all lanes instructions.
7787 case ARM::VLD3DUPdAsm_8:
7788 case ARM::VLD3DUPdAsm_16:
7789 case ARM::VLD3DUPdAsm_32:
7790 case ARM::VLD3DUPqAsm_8:
7791 case ARM::VLD3DUPqAsm_16:
7792 case ARM::VLD3DUPqAsm_32: {
7795 TmpInst.setOpcode(getRealVLDOpcode(Inst.getOpcode(), Spacing));
7796 TmpInst.addOperand(Inst.getOperand(0)); // Vd
7797 TmpInst.addOperand(MCOperand::createReg(Inst.getOperand(0).getReg() +
7799 TmpInst.addOperand(MCOperand::createReg(Inst.getOperand(0).getReg() +
7801 TmpInst.addOperand(Inst.getOperand(1)); // Rn
7802 TmpInst.addOperand(Inst.getOperand(2)); // alignment
7803 TmpInst.addOperand(Inst.getOperand(3)); // CondCode
7804 TmpInst.addOperand(Inst.getOperand(4));
7809 case ARM::VLD3DUPdWB_fixed_Asm_8:
7810 case ARM::VLD3DUPdWB_fixed_Asm_16:
7811 case ARM::VLD3DUPdWB_fixed_Asm_32:
7812 case ARM::VLD3DUPqWB_fixed_Asm_8:
7813 case ARM::VLD3DUPqWB_fixed_Asm_16:
7814 case ARM::VLD3DUPqWB_fixed_Asm_32: {
7817 TmpInst.setOpcode(getRealVLDOpcode(Inst.getOpcode(), Spacing));
7818 TmpInst.addOperand(Inst.getOperand(0)); // Vd
7819 TmpInst.addOperand(MCOperand::createReg(Inst.getOperand(0).getReg() +
7821 TmpInst.addOperand(MCOperand::createReg(Inst.getOperand(0).getReg() +
7823 TmpInst.addOperand(Inst.getOperand(1)); // Rn
7824 TmpInst.addOperand(Inst.getOperand(1)); // Rn_wb == tied Rn
7825 TmpInst.addOperand(Inst.getOperand(2)); // alignment
7826 TmpInst.addOperand(MCOperand::createReg(0)); // Rm
7827 TmpInst.addOperand(Inst.getOperand(3)); // CondCode
7828 TmpInst.addOperand(Inst.getOperand(4));
7833 case ARM::VLD3DUPdWB_register_Asm_8:
7834 case ARM::VLD3DUPdWB_register_Asm_16:
7835 case ARM::VLD3DUPdWB_register_Asm_32:
7836 case ARM::VLD3DUPqWB_register_Asm_8:
7837 case ARM::VLD3DUPqWB_register_Asm_16:
7838 case ARM::VLD3DUPqWB_register_Asm_32: {
7841 TmpInst.setOpcode(getRealVLDOpcode(Inst.getOpcode(), Spacing));
7842 TmpInst.addOperand(Inst.getOperand(0)); // Vd
7843 TmpInst.addOperand(MCOperand::createReg(Inst.getOperand(0).getReg() +
7845 TmpInst.addOperand(MCOperand::createReg(Inst.getOperand(0).getReg() +
7847 TmpInst.addOperand(Inst.getOperand(1)); // Rn
7848 TmpInst.addOperand(Inst.getOperand(1)); // Rn_wb == tied Rn
7849 TmpInst.addOperand(Inst.getOperand(2)); // alignment
7850 TmpInst.addOperand(Inst.getOperand(3)); // Rm
7851 TmpInst.addOperand(Inst.getOperand(4)); // CondCode
7852 TmpInst.addOperand(Inst.getOperand(5));
7857 // VLD3 multiple 3-element structure instructions.
7858 case ARM::VLD3dAsm_8:
7859 case ARM::VLD3dAsm_16:
7860 case ARM::VLD3dAsm_32:
7861 case ARM::VLD3qAsm_8:
7862 case ARM::VLD3qAsm_16:
7863 case ARM::VLD3qAsm_32: {
7866 TmpInst.setOpcode(getRealVLDOpcode(Inst.getOpcode(), Spacing));
7867 TmpInst.addOperand(Inst.getOperand(0)); // Vd
7868 TmpInst.addOperand(MCOperand::createReg(Inst.getOperand(0).getReg() +
7870 TmpInst.addOperand(MCOperand::createReg(Inst.getOperand(0).getReg() +
7872 TmpInst.addOperand(Inst.getOperand(1)); // Rn
7873 TmpInst.addOperand(Inst.getOperand(2)); // alignment
7874 TmpInst.addOperand(Inst.getOperand(3)); // CondCode
7875 TmpInst.addOperand(Inst.getOperand(4));
7880 case ARM::VLD3dWB_fixed_Asm_8:
7881 case ARM::VLD3dWB_fixed_Asm_16:
7882 case ARM::VLD3dWB_fixed_Asm_32:
7883 case ARM::VLD3qWB_fixed_Asm_8:
7884 case ARM::VLD3qWB_fixed_Asm_16:
7885 case ARM::VLD3qWB_fixed_Asm_32: {
7888 TmpInst.setOpcode(getRealVLDOpcode(Inst.getOpcode(), Spacing));
7889 TmpInst.addOperand(Inst.getOperand(0)); // Vd
7890 TmpInst.addOperand(MCOperand::createReg(Inst.getOperand(0).getReg() +
7892 TmpInst.addOperand(MCOperand::createReg(Inst.getOperand(0).getReg() +
7894 TmpInst.addOperand(Inst.getOperand(1)); // Rn
7895 TmpInst.addOperand(Inst.getOperand(1)); // Rn_wb == tied Rn
7896 TmpInst.addOperand(Inst.getOperand(2)); // alignment
7897 TmpInst.addOperand(MCOperand::createReg(0)); // Rm
7898 TmpInst.addOperand(Inst.getOperand(3)); // CondCode
7899 TmpInst.addOperand(Inst.getOperand(4));
7904 case ARM::VLD3dWB_register_Asm_8:
7905 case ARM::VLD3dWB_register_Asm_16:
7906 case ARM::VLD3dWB_register_Asm_32:
7907 case ARM::VLD3qWB_register_Asm_8:
7908 case ARM::VLD3qWB_register_Asm_16:
7909 case ARM::VLD3qWB_register_Asm_32: {
7912 TmpInst.setOpcode(getRealVLDOpcode(Inst.getOpcode(), Spacing));
7913 TmpInst.addOperand(Inst.getOperand(0)); // Vd
7914 TmpInst.addOperand(MCOperand::createReg(Inst.getOperand(0).getReg() +
7916 TmpInst.addOperand(MCOperand::createReg(Inst.getOperand(0).getReg() +
7918 TmpInst.addOperand(Inst.getOperand(1)); // Rn
7919 TmpInst.addOperand(Inst.getOperand(1)); // Rn_wb == tied Rn
7920 TmpInst.addOperand(Inst.getOperand(2)); // alignment
7921 TmpInst.addOperand(Inst.getOperand(3)); // Rm
7922 TmpInst.addOperand(Inst.getOperand(4)); // CondCode
7923 TmpInst.addOperand(Inst.getOperand(5));
7928 // VLD4DUP single 3-element structure to all lanes instructions.
7929 case ARM::VLD4DUPdAsm_8:
7930 case ARM::VLD4DUPdAsm_16:
7931 case ARM::VLD4DUPdAsm_32:
7932 case ARM::VLD4DUPqAsm_8:
7933 case ARM::VLD4DUPqAsm_16:
7934 case ARM::VLD4DUPqAsm_32: {
7937 TmpInst.setOpcode(getRealVLDOpcode(Inst.getOpcode(), Spacing));
7938 TmpInst.addOperand(Inst.getOperand(0)); // Vd
7939 TmpInst.addOperand(MCOperand::createReg(Inst.getOperand(0).getReg() +
7941 TmpInst.addOperand(MCOperand::createReg(Inst.getOperand(0).getReg() +
7943 TmpInst.addOperand(MCOperand::createReg(Inst.getOperand(0).getReg() +
7945 TmpInst.addOperand(Inst.getOperand(1)); // Rn
7946 TmpInst.addOperand(Inst.getOperand(2)); // alignment
7947 TmpInst.addOperand(Inst.getOperand(3)); // CondCode
7948 TmpInst.addOperand(Inst.getOperand(4));
7953 case ARM::VLD4DUPdWB_fixed_Asm_8:
7954 case ARM::VLD4DUPdWB_fixed_Asm_16:
7955 case ARM::VLD4DUPdWB_fixed_Asm_32:
7956 case ARM::VLD4DUPqWB_fixed_Asm_8:
7957 case ARM::VLD4DUPqWB_fixed_Asm_16:
7958 case ARM::VLD4DUPqWB_fixed_Asm_32: {
7961 TmpInst.setOpcode(getRealVLDOpcode(Inst.getOpcode(), Spacing));
7962 TmpInst.addOperand(Inst.getOperand(0)); // Vd
7963 TmpInst.addOperand(MCOperand::createReg(Inst.getOperand(0).getReg() +
7965 TmpInst.addOperand(MCOperand::createReg(Inst.getOperand(0).getReg() +
7967 TmpInst.addOperand(MCOperand::createReg(Inst.getOperand(0).getReg() +
7969 TmpInst.addOperand(Inst.getOperand(1)); // Rn
7970 TmpInst.addOperand(Inst.getOperand(1)); // Rn_wb == tied Rn
7971 TmpInst.addOperand(Inst.getOperand(2)); // alignment
7972 TmpInst.addOperand(MCOperand::createReg(0)); // Rm
7973 TmpInst.addOperand(Inst.getOperand(3)); // CondCode
7974 TmpInst.addOperand(Inst.getOperand(4));
7979 case ARM::VLD4DUPdWB_register_Asm_8:
7980 case ARM::VLD4DUPdWB_register_Asm_16:
7981 case ARM::VLD4DUPdWB_register_Asm_32:
7982 case ARM::VLD4DUPqWB_register_Asm_8:
7983 case ARM::VLD4DUPqWB_register_Asm_16:
7984 case ARM::VLD4DUPqWB_register_Asm_32: {
7987 TmpInst.setOpcode(getRealVLDOpcode(Inst.getOpcode(), Spacing));
7988 TmpInst.addOperand(Inst.getOperand(0)); // Vd
7989 TmpInst.addOperand(MCOperand::createReg(Inst.getOperand(0).getReg() +
7991 TmpInst.addOperand(MCOperand::createReg(Inst.getOperand(0).getReg() +
7993 TmpInst.addOperand(MCOperand::createReg(Inst.getOperand(0).getReg() +
7995 TmpInst.addOperand(Inst.getOperand(1)); // Rn
7996 TmpInst.addOperand(Inst.getOperand(1)); // Rn_wb == tied Rn
7997 TmpInst.addOperand(Inst.getOperand(2)); // alignment
7998 TmpInst.addOperand(Inst.getOperand(3)); // Rm
7999 TmpInst.addOperand(Inst.getOperand(4)); // CondCode
8000 TmpInst.addOperand(Inst.getOperand(5));
8005 // VLD4 multiple 4-element structure instructions.
8006 case ARM::VLD4dAsm_8:
8007 case ARM::VLD4dAsm_16:
8008 case ARM::VLD4dAsm_32:
8009 case ARM::VLD4qAsm_8:
8010 case ARM::VLD4qAsm_16:
8011 case ARM::VLD4qAsm_32: {
8014 TmpInst.setOpcode(getRealVLDOpcode(Inst.getOpcode(), Spacing));
8015 TmpInst.addOperand(Inst.getOperand(0)); // Vd
8016 TmpInst.addOperand(MCOperand::createReg(Inst.getOperand(0).getReg() +
8018 TmpInst.addOperand(MCOperand::createReg(Inst.getOperand(0).getReg() +
8020 TmpInst.addOperand(MCOperand::createReg(Inst.getOperand(0).getReg() +
8022 TmpInst.addOperand(Inst.getOperand(1)); // Rn
8023 TmpInst.addOperand(Inst.getOperand(2)); // alignment
8024 TmpInst.addOperand(Inst.getOperand(3)); // CondCode
8025 TmpInst.addOperand(Inst.getOperand(4));
8030 case ARM::VLD4dWB_fixed_Asm_8:
8031 case ARM::VLD4dWB_fixed_Asm_16:
8032 case ARM::VLD4dWB_fixed_Asm_32:
8033 case ARM::VLD4qWB_fixed_Asm_8:
8034 case ARM::VLD4qWB_fixed_Asm_16:
8035 case ARM::VLD4qWB_fixed_Asm_32: {
8038 TmpInst.setOpcode(getRealVLDOpcode(Inst.getOpcode(), Spacing));
8039 TmpInst.addOperand(Inst.getOperand(0)); // Vd
8040 TmpInst.addOperand(MCOperand::createReg(Inst.getOperand(0).getReg() +
8042 TmpInst.addOperand(MCOperand::createReg(Inst.getOperand(0).getReg() +
8044 TmpInst.addOperand(MCOperand::createReg(Inst.getOperand(0).getReg() +
8046 TmpInst.addOperand(Inst.getOperand(1)); // Rn
8047 TmpInst.addOperand(Inst.getOperand(1)); // Rn_wb == tied Rn
8048 TmpInst.addOperand(Inst.getOperand(2)); // alignment
8049 TmpInst.addOperand(MCOperand::createReg(0)); // Rm
8050 TmpInst.addOperand(Inst.getOperand(3)); // CondCode
8051 TmpInst.addOperand(Inst.getOperand(4));
8056 case ARM::VLD4dWB_register_Asm_8:
8057 case ARM::VLD4dWB_register_Asm_16:
8058 case ARM::VLD4dWB_register_Asm_32:
8059 case ARM::VLD4qWB_register_Asm_8:
8060 case ARM::VLD4qWB_register_Asm_16:
8061 case ARM::VLD4qWB_register_Asm_32: {
8064 TmpInst.setOpcode(getRealVLDOpcode(Inst.getOpcode(), Spacing));
8065 TmpInst.addOperand(Inst.getOperand(0)); // Vd
8066 TmpInst.addOperand(MCOperand::createReg(Inst.getOperand(0).getReg() +
8068 TmpInst.addOperand(MCOperand::createReg(Inst.getOperand(0).getReg() +
8070 TmpInst.addOperand(MCOperand::createReg(Inst.getOperand(0).getReg() +
8072 TmpInst.addOperand(Inst.getOperand(1)); // Rn
8073 TmpInst.addOperand(Inst.getOperand(1)); // Rn_wb == tied Rn
8074 TmpInst.addOperand(Inst.getOperand(2)); // alignment
8075 TmpInst.addOperand(Inst.getOperand(3)); // Rm
8076 TmpInst.addOperand(Inst.getOperand(4)); // CondCode
8077 TmpInst.addOperand(Inst.getOperand(5));
8082 // VST3 multiple 3-element structure instructions.
8083 case ARM::VST3dAsm_8:
8084 case ARM::VST3dAsm_16:
8085 case ARM::VST3dAsm_32:
8086 case ARM::VST3qAsm_8:
8087 case ARM::VST3qAsm_16:
8088 case ARM::VST3qAsm_32: {
8091 TmpInst.setOpcode(getRealVSTOpcode(Inst.getOpcode(), Spacing));
8092 TmpInst.addOperand(Inst.getOperand(1)); // Rn
8093 TmpInst.addOperand(Inst.getOperand(2)); // alignment
8094 TmpInst.addOperand(Inst.getOperand(0)); // Vd
8095 TmpInst.addOperand(MCOperand::createReg(Inst.getOperand(0).getReg() +
8097 TmpInst.addOperand(MCOperand::createReg(Inst.getOperand(0).getReg() +
8099 TmpInst.addOperand(Inst.getOperand(3)); // CondCode
8100 TmpInst.addOperand(Inst.getOperand(4));
8105 case ARM::VST3dWB_fixed_Asm_8:
8106 case ARM::VST3dWB_fixed_Asm_16:
8107 case ARM::VST3dWB_fixed_Asm_32:
8108 case ARM::VST3qWB_fixed_Asm_8:
8109 case ARM::VST3qWB_fixed_Asm_16:
8110 case ARM::VST3qWB_fixed_Asm_32: {
8113 TmpInst.setOpcode(getRealVSTOpcode(Inst.getOpcode(), Spacing));
8114 TmpInst.addOperand(Inst.getOperand(1)); // Rn
8115 TmpInst.addOperand(Inst.getOperand(1)); // Rn_wb == tied Rn
8116 TmpInst.addOperand(Inst.getOperand(2)); // alignment
8117 TmpInst.addOperand(MCOperand::createReg(0)); // Rm
8118 TmpInst.addOperand(Inst.getOperand(0)); // Vd
8119 TmpInst.addOperand(MCOperand::createReg(Inst.getOperand(0).getReg() +
8121 TmpInst.addOperand(MCOperand::createReg(Inst.getOperand(0).getReg() +
8123 TmpInst.addOperand(Inst.getOperand(3)); // CondCode
8124 TmpInst.addOperand(Inst.getOperand(4));
8129 case ARM::VST3dWB_register_Asm_8:
8130 case ARM::VST3dWB_register_Asm_16:
8131 case ARM::VST3dWB_register_Asm_32:
8132 case ARM::VST3qWB_register_Asm_8:
8133 case ARM::VST3qWB_register_Asm_16:
8134 case ARM::VST3qWB_register_Asm_32: {
8137 TmpInst.setOpcode(getRealVSTOpcode(Inst.getOpcode(), Spacing));
8138 TmpInst.addOperand(Inst.getOperand(1)); // Rn
8139 TmpInst.addOperand(Inst.getOperand(1)); // Rn_wb == tied Rn
8140 TmpInst.addOperand(Inst.getOperand(2)); // alignment
8141 TmpInst.addOperand(Inst.getOperand(3)); // Rm
8142 TmpInst.addOperand(Inst.getOperand(0)); // Vd
8143 TmpInst.addOperand(MCOperand::createReg(Inst.getOperand(0).getReg() +
8145 TmpInst.addOperand(MCOperand::createReg(Inst.getOperand(0).getReg() +
8147 TmpInst.addOperand(Inst.getOperand(4)); // CondCode
8148 TmpInst.addOperand(Inst.getOperand(5));
8153 // VST4 multiple 3-element structure instructions.
8154 case ARM::VST4dAsm_8:
8155 case ARM::VST4dAsm_16:
8156 case ARM::VST4dAsm_32:
8157 case ARM::VST4qAsm_8:
8158 case ARM::VST4qAsm_16:
8159 case ARM::VST4qAsm_32: {
8162 TmpInst.setOpcode(getRealVSTOpcode(Inst.getOpcode(), Spacing));
8163 TmpInst.addOperand(Inst.getOperand(1)); // Rn
8164 TmpInst.addOperand(Inst.getOperand(2)); // alignment
8165 TmpInst.addOperand(Inst.getOperand(0)); // Vd
8166 TmpInst.addOperand(MCOperand::createReg(Inst.getOperand(0).getReg() +
8168 TmpInst.addOperand(MCOperand::createReg(Inst.getOperand(0).getReg() +
8170 TmpInst.addOperand(MCOperand::createReg(Inst.getOperand(0).getReg() +
8172 TmpInst.addOperand(Inst.getOperand(3)); // CondCode
8173 TmpInst.addOperand(Inst.getOperand(4));
8178 case ARM::VST4dWB_fixed_Asm_8:
8179 case ARM::VST4dWB_fixed_Asm_16:
8180 case ARM::VST4dWB_fixed_Asm_32:
8181 case ARM::VST4qWB_fixed_Asm_8:
8182 case ARM::VST4qWB_fixed_Asm_16:
8183 case ARM::VST4qWB_fixed_Asm_32: {
8186 TmpInst.setOpcode(getRealVSTOpcode(Inst.getOpcode(), Spacing));
8187 TmpInst.addOperand(Inst.getOperand(1)); // Rn
8188 TmpInst.addOperand(Inst.getOperand(1)); // Rn_wb == tied Rn
8189 TmpInst.addOperand(Inst.getOperand(2)); // alignment
8190 TmpInst.addOperand(MCOperand::createReg(0)); // Rm
8191 TmpInst.addOperand(Inst.getOperand(0)); // Vd
8192 TmpInst.addOperand(MCOperand::createReg(Inst.getOperand(0).getReg() +
8194 TmpInst.addOperand(MCOperand::createReg(Inst.getOperand(0).getReg() +
8196 TmpInst.addOperand(MCOperand::createReg(Inst.getOperand(0).getReg() +
8198 TmpInst.addOperand(Inst.getOperand(3)); // CondCode
8199 TmpInst.addOperand(Inst.getOperand(4));
8204 case ARM::VST4dWB_register_Asm_8:
8205 case ARM::VST4dWB_register_Asm_16:
8206 case ARM::VST4dWB_register_Asm_32:
8207 case ARM::VST4qWB_register_Asm_8:
8208 case ARM::VST4qWB_register_Asm_16:
8209 case ARM::VST4qWB_register_Asm_32: {
8212 TmpInst.setOpcode(getRealVSTOpcode(Inst.getOpcode(), Spacing));
8213 TmpInst.addOperand(Inst.getOperand(1)); // Rn
8214 TmpInst.addOperand(Inst.getOperand(1)); // Rn_wb == tied Rn
8215 TmpInst.addOperand(Inst.getOperand(2)); // alignment
8216 TmpInst.addOperand(Inst.getOperand(3)); // Rm
8217 TmpInst.addOperand(Inst.getOperand(0)); // Vd
8218 TmpInst.addOperand(MCOperand::createReg(Inst.getOperand(0).getReg() +
8220 TmpInst.addOperand(MCOperand::createReg(Inst.getOperand(0).getReg() +
8222 TmpInst.addOperand(MCOperand::createReg(Inst.getOperand(0).getReg() +
8224 TmpInst.addOperand(Inst.getOperand(4)); // CondCode
8225 TmpInst.addOperand(Inst.getOperand(5));
8230 // Handle encoding choice for the shift-immediate instructions.
8233 case ARM::t2ASRri: {
8234 if (isARMLowRegister(Inst.getOperand(0).getReg()) &&
8235 Inst.getOperand(0).getReg() == Inst.getOperand(1).getReg() &&
8236 Inst.getOperand(5).getReg() == (inITBlock() ? 0 : ARM::CPSR) &&
8237 !(static_cast<ARMOperand &>(*Operands[3]).isToken() &&
8238 static_cast<ARMOperand &>(*Operands[3]).getToken() == ".w")) {
8240 switch (Inst.getOpcode()) {
8241 default: llvm_unreachable("unexpected opcode");
8242 case ARM::t2LSLri: NewOpc = ARM::tLSLri; break;
8243 case ARM::t2LSRri: NewOpc = ARM::tLSRri; break;
8244 case ARM::t2ASRri: NewOpc = ARM::tASRri; break;
8246 // The Thumb1 operands aren't in the same order. Awesome, eh?
8248 TmpInst.setOpcode(NewOpc);
8249 TmpInst.addOperand(Inst.getOperand(0));
8250 TmpInst.addOperand(Inst.getOperand(5));
8251 TmpInst.addOperand(Inst.getOperand(1));
8252 TmpInst.addOperand(Inst.getOperand(2));
8253 TmpInst.addOperand(Inst.getOperand(3));
8254 TmpInst.addOperand(Inst.getOperand(4));
8261 // Handle the Thumb2 mode MOV complex aliases.
8263 case ARM::t2MOVSsr: {
8264 // Which instruction to expand to depends on the CCOut operand and
8265 // whether we're in an IT block if the register operands are low
8267 bool isNarrow = false;
8268 if (isARMLowRegister(Inst.getOperand(0).getReg()) &&
8269 isARMLowRegister(Inst.getOperand(1).getReg()) &&
8270 isARMLowRegister(Inst.getOperand(2).getReg()) &&
8271 Inst.getOperand(0).getReg() == Inst.getOperand(1).getReg() &&
8272 inITBlock() == (Inst.getOpcode() == ARM::t2MOVsr))
8276 switch(ARM_AM::getSORegShOp(Inst.getOperand(3).getImm())) {
8277 default: llvm_unreachable("unexpected opcode!");
8278 case ARM_AM::asr: newOpc = isNarrow ? ARM::tASRrr : ARM::t2ASRrr; break;
8279 case ARM_AM::lsr: newOpc = isNarrow ? ARM::tLSRrr : ARM::t2LSRrr; break;
8280 case ARM_AM::lsl: newOpc = isNarrow ? ARM::tLSLrr : ARM::t2LSLrr; break;
8281 case ARM_AM::ror: newOpc = isNarrow ? ARM::tROR : ARM::t2RORrr; break;
8283 TmpInst.setOpcode(newOpc);
8284 TmpInst.addOperand(Inst.getOperand(0)); // Rd
8286 TmpInst.addOperand(MCOperand::createReg(
8287 Inst.getOpcode() == ARM::t2MOVSsr ? ARM::CPSR : 0));
8288 TmpInst.addOperand(Inst.getOperand(1)); // Rn
8289 TmpInst.addOperand(Inst.getOperand(2)); // Rm
8290 TmpInst.addOperand(Inst.getOperand(4)); // CondCode
8291 TmpInst.addOperand(Inst.getOperand(5));
8293 TmpInst.addOperand(MCOperand::createReg(
8294 Inst.getOpcode() == ARM::t2MOVSsr ? ARM::CPSR : 0));
8299 case ARM::t2MOVSsi: {
8300 // Which instruction to expand to depends on the CCOut operand and
8301 // whether we're in an IT block if the register operands are low
8303 bool isNarrow = false;
8304 if (isARMLowRegister(Inst.getOperand(0).getReg()) &&
8305 isARMLowRegister(Inst.getOperand(1).getReg()) &&
8306 inITBlock() == (Inst.getOpcode() == ARM::t2MOVsi))
8310 switch(ARM_AM::getSORegShOp(Inst.getOperand(2).getImm())) {
8311 default: llvm_unreachable("unexpected opcode!");
8312 case ARM_AM::asr: newOpc = isNarrow ? ARM::tASRri : ARM::t2ASRri; break;
8313 case ARM_AM::lsr: newOpc = isNarrow ? ARM::tLSRri : ARM::t2LSRri; break;
8314 case ARM_AM::lsl: newOpc = isNarrow ? ARM::tLSLri : ARM::t2LSLri; break;
8315 case ARM_AM::ror: newOpc = ARM::t2RORri; isNarrow = false; break;
8316 case ARM_AM::rrx: isNarrow = false; newOpc = ARM::t2RRX; break;
8318 unsigned Amount = ARM_AM::getSORegOffset(Inst.getOperand(2).getImm());
8319 if (Amount == 32) Amount = 0;
8320 TmpInst.setOpcode(newOpc);
8321 TmpInst.addOperand(Inst.getOperand(0)); // Rd
8323 TmpInst.addOperand(MCOperand::createReg(
8324 Inst.getOpcode() == ARM::t2MOVSsi ? ARM::CPSR : 0));
8325 TmpInst.addOperand(Inst.getOperand(1)); // Rn
8326 if (newOpc != ARM::t2RRX)
8327 TmpInst.addOperand(MCOperand::createImm(Amount));
8328 TmpInst.addOperand(Inst.getOperand(3)); // CondCode
8329 TmpInst.addOperand(Inst.getOperand(4));
8331 TmpInst.addOperand(MCOperand::createReg(
8332 Inst.getOpcode() == ARM::t2MOVSsi ? ARM::CPSR : 0));
8336 // Handle the ARM mode MOV complex aliases.
8341 ARM_AM::ShiftOpc ShiftTy;
8342 switch(Inst.getOpcode()) {
8343 default: llvm_unreachable("unexpected opcode!");
8344 case ARM::ASRr: ShiftTy = ARM_AM::asr; break;
8345 case ARM::LSRr: ShiftTy = ARM_AM::lsr; break;
8346 case ARM::LSLr: ShiftTy = ARM_AM::lsl; break;
8347 case ARM::RORr: ShiftTy = ARM_AM::ror; break;
8349 unsigned Shifter = ARM_AM::getSORegOpc(ShiftTy, 0);
8351 TmpInst.setOpcode(ARM::MOVsr);
8352 TmpInst.addOperand(Inst.getOperand(0)); // Rd
8353 TmpInst.addOperand(Inst.getOperand(1)); // Rn
8354 TmpInst.addOperand(Inst.getOperand(2)); // Rm
8355 TmpInst.addOperand(MCOperand::createImm(Shifter)); // Shift value and ty
8356 TmpInst.addOperand(Inst.getOperand(3)); // CondCode
8357 TmpInst.addOperand(Inst.getOperand(4));
8358 TmpInst.addOperand(Inst.getOperand(5)); // cc_out
8366 ARM_AM::ShiftOpc ShiftTy;
8367 switch(Inst.getOpcode()) {
8368 default: llvm_unreachable("unexpected opcode!");
8369 case ARM::ASRi: ShiftTy = ARM_AM::asr; break;
8370 case ARM::LSRi: ShiftTy = ARM_AM::lsr; break;
8371 case ARM::LSLi: ShiftTy = ARM_AM::lsl; break;
8372 case ARM::RORi: ShiftTy = ARM_AM::ror; break;
8374 // A shift by zero is a plain MOVr, not a MOVsi.
8375 unsigned Amt = Inst.getOperand(2).getImm();
8376 unsigned Opc = Amt == 0 ? ARM::MOVr : ARM::MOVsi;
8377 // A shift by 32 should be encoded as 0 when permitted
8378 if (Amt == 32 && (ShiftTy == ARM_AM::lsr || ShiftTy == ARM_AM::asr))
8380 unsigned Shifter = ARM_AM::getSORegOpc(ShiftTy, Amt);
8382 TmpInst.setOpcode(Opc);
8383 TmpInst.addOperand(Inst.getOperand(0)); // Rd
8384 TmpInst.addOperand(Inst.getOperand(1)); // Rn
8385 if (Opc == ARM::MOVsi)
8386 TmpInst.addOperand(MCOperand::createImm(Shifter)); // Shift value and ty
8387 TmpInst.addOperand(Inst.getOperand(3)); // CondCode
8388 TmpInst.addOperand(Inst.getOperand(4));
8389 TmpInst.addOperand(Inst.getOperand(5)); // cc_out
8394 unsigned Shifter = ARM_AM::getSORegOpc(ARM_AM::rrx, 0);
8396 TmpInst.setOpcode(ARM::MOVsi);
8397 TmpInst.addOperand(Inst.getOperand(0)); // Rd
8398 TmpInst.addOperand(Inst.getOperand(1)); // Rn
8399 TmpInst.addOperand(MCOperand::createImm(Shifter)); // Shift value and ty
8400 TmpInst.addOperand(Inst.getOperand(2)); // CondCode
8401 TmpInst.addOperand(Inst.getOperand(3));
8402 TmpInst.addOperand(Inst.getOperand(4)); // cc_out
8406 case ARM::t2LDMIA_UPD: {
8407 // If this is a load of a single register, then we should use
8408 // a post-indexed LDR instruction instead, per the ARM ARM.
8409 if (Inst.getNumOperands() != 5)
8412 TmpInst.setOpcode(ARM::t2LDR_POST);
8413 TmpInst.addOperand(Inst.getOperand(4)); // Rt
8414 TmpInst.addOperand(Inst.getOperand(0)); // Rn_wb
8415 TmpInst.addOperand(Inst.getOperand(1)); // Rn
8416 TmpInst.addOperand(MCOperand::createImm(4));
8417 TmpInst.addOperand(Inst.getOperand(2)); // CondCode
8418 TmpInst.addOperand(Inst.getOperand(3));
8422 case ARM::t2STMDB_UPD: {
8423 // If this is a store of a single register, then we should use
8424 // a pre-indexed STR instruction instead, per the ARM ARM.
8425 if (Inst.getNumOperands() != 5)
8428 TmpInst.setOpcode(ARM::t2STR_PRE);
8429 TmpInst.addOperand(Inst.getOperand(0)); // Rn_wb
8430 TmpInst.addOperand(Inst.getOperand(4)); // Rt
8431 TmpInst.addOperand(Inst.getOperand(1)); // Rn
8432 TmpInst.addOperand(MCOperand::createImm(-4));
8433 TmpInst.addOperand(Inst.getOperand(2)); // CondCode
8434 TmpInst.addOperand(Inst.getOperand(3));
8438 case ARM::LDMIA_UPD:
8439 // If this is a load of a single register via a 'pop', then we should use
8440 // a post-indexed LDR instruction instead, per the ARM ARM.
8441 if (static_cast<ARMOperand &>(*Operands[0]).getToken() == "pop" &&
8442 Inst.getNumOperands() == 5) {
8444 TmpInst.setOpcode(ARM::LDR_POST_IMM);
8445 TmpInst.addOperand(Inst.getOperand(4)); // Rt
8446 TmpInst.addOperand(Inst.getOperand(0)); // Rn_wb
8447 TmpInst.addOperand(Inst.getOperand(1)); // Rn
8448 TmpInst.addOperand(MCOperand::createReg(0)); // am2offset
8449 TmpInst.addOperand(MCOperand::createImm(4));
8450 TmpInst.addOperand(Inst.getOperand(2)); // CondCode
8451 TmpInst.addOperand(Inst.getOperand(3));
8456 case ARM::STMDB_UPD:
8457 // If this is a store of a single register via a 'push', then we should use
8458 // a pre-indexed STR instruction instead, per the ARM ARM.
8459 if (static_cast<ARMOperand &>(*Operands[0]).getToken() == "push" &&
8460 Inst.getNumOperands() == 5) {
8462 TmpInst.setOpcode(ARM::STR_PRE_IMM);
8463 TmpInst.addOperand(Inst.getOperand(0)); // Rn_wb
8464 TmpInst.addOperand(Inst.getOperand(4)); // Rt
8465 TmpInst.addOperand(Inst.getOperand(1)); // addrmode_imm12
8466 TmpInst.addOperand(MCOperand::createImm(-4));
8467 TmpInst.addOperand(Inst.getOperand(2)); // CondCode
8468 TmpInst.addOperand(Inst.getOperand(3));
8472 case ARM::t2ADDri12:
8473 // If the immediate fits for encoding T3 (t2ADDri) and the generic "add"
8474 // mnemonic was used (not "addw"), encoding T3 is preferred.
8475 if (static_cast<ARMOperand &>(*Operands[0]).getToken() != "add" ||
8476 ARM_AM::getT2SOImmVal(Inst.getOperand(2).getImm()) == -1)
8478 Inst.setOpcode(ARM::t2ADDri);
8479 Inst.addOperand(MCOperand::createReg(0)); // cc_out
8481 case ARM::t2SUBri12:
8482 // If the immediate fits for encoding T3 (t2SUBri) and the generic "sub"
8483 // mnemonic was used (not "subw"), encoding T3 is preferred.
8484 if (static_cast<ARMOperand &>(*Operands[0]).getToken() != "sub" ||
8485 ARM_AM::getT2SOImmVal(Inst.getOperand(2).getImm()) == -1)
8487 Inst.setOpcode(ARM::t2SUBri);
8488 Inst.addOperand(MCOperand::createReg(0)); // cc_out
8491 // If the immediate is in the range 0-7, we want tADDi3 iff Rd was
8492 // explicitly specified. From the ARM ARM: "Encoding T1 is preferred
8493 // to encoding T2 if <Rd> is specified and encoding T2 is preferred
8494 // to encoding T1 if <Rd> is omitted."
8495 if ((unsigned)Inst.getOperand(3).getImm() < 8 && Operands.size() == 6) {
8496 Inst.setOpcode(ARM::tADDi3);
8501 // If the immediate is in the range 0-7, we want tADDi3 iff Rd was
8502 // explicitly specified. From the ARM ARM: "Encoding T1 is preferred
8503 // to encoding T2 if <Rd> is specified and encoding T2 is preferred
8504 // to encoding T1 if <Rd> is omitted."
8505 if ((unsigned)Inst.getOperand(3).getImm() < 8 && Operands.size() == 6) {
8506 Inst.setOpcode(ARM::tSUBi3);
8511 case ARM::t2SUBri: {
8512 // If the destination and first source operand are the same, and
8513 // the flags are compatible with the current IT status, use encoding T2
8514 // instead of T3. For compatibility with the system 'as'. Make sure the
8515 // wide encoding wasn't explicit.
8516 if (Inst.getOperand(0).getReg() != Inst.getOperand(1).getReg() ||
8517 !isARMLowRegister(Inst.getOperand(0).getReg()) ||
8518 (unsigned)Inst.getOperand(2).getImm() > 255 ||
8519 ((!inITBlock() && Inst.getOperand(5).getReg() != ARM::CPSR) ||
8520 (inITBlock() && Inst.getOperand(5).getReg() != 0)) ||
8521 (static_cast<ARMOperand &>(*Operands[3]).isToken() &&
8522 static_cast<ARMOperand &>(*Operands[3]).getToken() == ".w"))
8525 TmpInst.setOpcode(Inst.getOpcode() == ARM::t2ADDri ?
8526 ARM::tADDi8 : ARM::tSUBi8);
8527 TmpInst.addOperand(Inst.getOperand(0));
8528 TmpInst.addOperand(Inst.getOperand(5));
8529 TmpInst.addOperand(Inst.getOperand(0));
8530 TmpInst.addOperand(Inst.getOperand(2));
8531 TmpInst.addOperand(Inst.getOperand(3));
8532 TmpInst.addOperand(Inst.getOperand(4));
8536 case ARM::t2ADDrr: {
8537 // If the destination and first source operand are the same, and
8538 // there's no setting of the flags, use encoding T2 instead of T3.
8539 // Note that this is only for ADD, not SUB. This mirrors the system
8540 // 'as' behaviour. Also take advantage of ADD being commutative.
8541 // Make sure the wide encoding wasn't explicit.
8543 auto DestReg = Inst.getOperand(0).getReg();
8544 bool Transform = DestReg == Inst.getOperand(1).getReg();
8545 if (!Transform && DestReg == Inst.getOperand(2).getReg()) {
8550 Inst.getOperand(5).getReg() != 0 ||
8551 (static_cast<ARMOperand &>(*Operands[3]).isToken() &&
8552 static_cast<ARMOperand &>(*Operands[3]).getToken() == ".w"))
8555 TmpInst.setOpcode(ARM::tADDhirr);
8556 TmpInst.addOperand(Inst.getOperand(0));
8557 TmpInst.addOperand(Inst.getOperand(0));
8558 TmpInst.addOperand(Inst.getOperand(Swap ? 1 : 2));
8559 TmpInst.addOperand(Inst.getOperand(3));
8560 TmpInst.addOperand(Inst.getOperand(4));
8564 case ARM::tADDrSP: {
8565 // If the non-SP source operand and the destination operand are not the
8566 // same, we need to use the 32-bit encoding if it's available.
8567 if (Inst.getOperand(0).getReg() != Inst.getOperand(2).getReg()) {
8568 Inst.setOpcode(ARM::t2ADDrr);
8569 Inst.addOperand(MCOperand::createReg(0)); // cc_out
8575 // A Thumb conditional branch outside of an IT block is a tBcc.
8576 if (Inst.getOperand(1).getImm() != ARMCC::AL && !inITBlock()) {
8577 Inst.setOpcode(ARM::tBcc);
8582 // A Thumb2 conditional branch outside of an IT block is a t2Bcc.
8583 if (Inst.getOperand(1).getImm() != ARMCC::AL && !inITBlock()){
8584 Inst.setOpcode(ARM::t2Bcc);
8589 // If the conditional is AL or we're in an IT block, we really want t2B.
8590 if (Inst.getOperand(1).getImm() == ARMCC::AL || inITBlock()) {
8591 Inst.setOpcode(ARM::t2B);
8596 // If the conditional is AL, we really want tB.
8597 if (Inst.getOperand(1).getImm() == ARMCC::AL) {
8598 Inst.setOpcode(ARM::tB);
8603 // If the register list contains any high registers, or if the writeback
8604 // doesn't match what tLDMIA can do, we need to use the 32-bit encoding
8605 // instead if we're in Thumb2. Otherwise, this should have generated
8606 // an error in validateInstruction().
8607 unsigned Rn = Inst.getOperand(0).getReg();
8608 bool hasWritebackToken =
8609 (static_cast<ARMOperand &>(*Operands[3]).isToken() &&
8610 static_cast<ARMOperand &>(*Operands[3]).getToken() == "!");
8611 bool listContainsBase;
8612 if (checkLowRegisterList(Inst, 3, Rn, 0, listContainsBase) ||
8613 (!listContainsBase && !hasWritebackToken) ||
8614 (listContainsBase && hasWritebackToken)) {
8615 // 16-bit encoding isn't sufficient. Switch to the 32-bit version.
8616 assert (isThumbTwo());
8617 Inst.setOpcode(hasWritebackToken ? ARM::t2LDMIA_UPD : ARM::t2LDMIA);
8618 // If we're switching to the updating version, we need to insert
8619 // the writeback tied operand.
8620 if (hasWritebackToken)
8621 Inst.insert(Inst.begin(),
8622 MCOperand::createReg(Inst.getOperand(0).getReg()));
8627 case ARM::tSTMIA_UPD: {
8628 // If the register list contains any high registers, we need to use
8629 // the 32-bit encoding instead if we're in Thumb2. Otherwise, this
8630 // should have generated an error in validateInstruction().
8631 unsigned Rn = Inst.getOperand(0).getReg();
8632 bool listContainsBase;
8633 if (checkLowRegisterList(Inst, 4, Rn, 0, listContainsBase)) {
8634 // 16-bit encoding isn't sufficient. Switch to the 32-bit version.
8635 assert (isThumbTwo());
8636 Inst.setOpcode(ARM::t2STMIA_UPD);
8642 bool listContainsBase;
8643 // If the register list contains any high registers, we need to use
8644 // the 32-bit encoding instead if we're in Thumb2. Otherwise, this
8645 // should have generated an error in validateInstruction().
8646 if (!checkLowRegisterList(Inst, 2, 0, ARM::PC, listContainsBase))
8648 assert (isThumbTwo());
8649 Inst.setOpcode(ARM::t2LDMIA_UPD);
8650 // Add the base register and writeback operands.
8651 Inst.insert(Inst.begin(), MCOperand::createReg(ARM::SP));
8652 Inst.insert(Inst.begin(), MCOperand::createReg(ARM::SP));
8656 bool listContainsBase;
8657 if (!checkLowRegisterList(Inst, 2, 0, ARM::LR, listContainsBase))
8659 assert (isThumbTwo());
8660 Inst.setOpcode(ARM::t2STMDB_UPD);
8661 // Add the base register and writeback operands.
8662 Inst.insert(Inst.begin(), MCOperand::createReg(ARM::SP));
8663 Inst.insert(Inst.begin(), MCOperand::createReg(ARM::SP));
8667 // If we can use the 16-bit encoding and the user didn't explicitly
8668 // request the 32-bit variant, transform it here.
8669 if (isARMLowRegister(Inst.getOperand(0).getReg()) &&
8670 (unsigned)Inst.getOperand(1).getImm() <= 255 &&
8671 ((!inITBlock() && Inst.getOperand(2).getImm() == ARMCC::AL &&
8672 Inst.getOperand(4).getReg() == ARM::CPSR) ||
8673 (inITBlock() && Inst.getOperand(4).getReg() == 0)) &&
8674 (!static_cast<ARMOperand &>(*Operands[2]).isToken() ||
8675 static_cast<ARMOperand &>(*Operands[2]).getToken() != ".w")) {
8676 // The operands aren't in the same order for tMOVi8...
8678 TmpInst.setOpcode(ARM::tMOVi8);
8679 TmpInst.addOperand(Inst.getOperand(0));
8680 TmpInst.addOperand(Inst.getOperand(4));
8681 TmpInst.addOperand(Inst.getOperand(1));
8682 TmpInst.addOperand(Inst.getOperand(2));
8683 TmpInst.addOperand(Inst.getOperand(3));
8690 // If we can use the 16-bit encoding and the user didn't explicitly
8691 // request the 32-bit variant, transform it here.
8692 if (isARMLowRegister(Inst.getOperand(0).getReg()) &&
8693 isARMLowRegister(Inst.getOperand(1).getReg()) &&
8694 Inst.getOperand(2).getImm() == ARMCC::AL &&
8695 Inst.getOperand(4).getReg() == ARM::CPSR &&
8696 (!static_cast<ARMOperand &>(*Operands[2]).isToken() ||
8697 static_cast<ARMOperand &>(*Operands[2]).getToken() != ".w")) {
8698 // The operands aren't the same for tMOV[S]r... (no cc_out)
8700 TmpInst.setOpcode(Inst.getOperand(4).getReg() ? ARM::tMOVSr : ARM::tMOVr);
8701 TmpInst.addOperand(Inst.getOperand(0));
8702 TmpInst.addOperand(Inst.getOperand(1));
8703 TmpInst.addOperand(Inst.getOperand(2));
8704 TmpInst.addOperand(Inst.getOperand(3));
8714 // If we can use the 16-bit encoding and the user didn't explicitly
8715 // request the 32-bit variant, transform it here.
8716 if (isARMLowRegister(Inst.getOperand(0).getReg()) &&
8717 isARMLowRegister(Inst.getOperand(1).getReg()) &&
8718 Inst.getOperand(2).getImm() == 0 &&
8719 (!static_cast<ARMOperand &>(*Operands[2]).isToken() ||
8720 static_cast<ARMOperand &>(*Operands[2]).getToken() != ".w")) {
8722 switch (Inst.getOpcode()) {
8723 default: llvm_unreachable("Illegal opcode!");
8724 case ARM::t2SXTH: NewOpc = ARM::tSXTH; break;
8725 case ARM::t2SXTB: NewOpc = ARM::tSXTB; break;
8726 case ARM::t2UXTH: NewOpc = ARM::tUXTH; break;
8727 case ARM::t2UXTB: NewOpc = ARM::tUXTB; break;
8729 // The operands aren't the same for thumb1 (no rotate operand).
8731 TmpInst.setOpcode(NewOpc);
8732 TmpInst.addOperand(Inst.getOperand(0));
8733 TmpInst.addOperand(Inst.getOperand(1));
8734 TmpInst.addOperand(Inst.getOperand(3));
8735 TmpInst.addOperand(Inst.getOperand(4));
8742 ARM_AM::ShiftOpc SOpc = ARM_AM::getSORegShOp(Inst.getOperand(2).getImm());
8743 // rrx shifts and asr/lsr of #32 is encoded as 0
8744 if (SOpc == ARM_AM::rrx || SOpc == ARM_AM::asr || SOpc == ARM_AM::lsr)
8746 if (ARM_AM::getSORegOffset(Inst.getOperand(2).getImm()) == 0) {
8747 // Shifting by zero is accepted as a vanilla 'MOVr'
8749 TmpInst.setOpcode(ARM::MOVr);
8750 TmpInst.addOperand(Inst.getOperand(0));
8751 TmpInst.addOperand(Inst.getOperand(1));
8752 TmpInst.addOperand(Inst.getOperand(3));
8753 TmpInst.addOperand(Inst.getOperand(4));
8754 TmpInst.addOperand(Inst.getOperand(5));
8767 ARM_AM::ShiftOpc SOpc = ARM_AM::getSORegShOp(Inst.getOperand(3).getImm());
8768 if (SOpc == ARM_AM::rrx) return false;
8769 switch (Inst.getOpcode()) {
8770 default: llvm_unreachable("unexpected opcode!");
8771 case ARM::ANDrsi: newOpc = ARM::ANDrr; break;
8772 case ARM::ORRrsi: newOpc = ARM::ORRrr; break;
8773 case ARM::EORrsi: newOpc = ARM::EORrr; break;
8774 case ARM::BICrsi: newOpc = ARM::BICrr; break;
8775 case ARM::SUBrsi: newOpc = ARM::SUBrr; break;
8776 case ARM::ADDrsi: newOpc = ARM::ADDrr; break;
8778 // If the shift is by zero, use the non-shifted instruction definition.
8779 // The exception is for right shifts, where 0 == 32
8780 if (ARM_AM::getSORegOffset(Inst.getOperand(3).getImm()) == 0 &&
8781 !(SOpc == ARM_AM::lsr || SOpc == ARM_AM::asr)) {
8783 TmpInst.setOpcode(newOpc);
8784 TmpInst.addOperand(Inst.getOperand(0));
8785 TmpInst.addOperand(Inst.getOperand(1));
8786 TmpInst.addOperand(Inst.getOperand(2));
8787 TmpInst.addOperand(Inst.getOperand(4));
8788 TmpInst.addOperand(Inst.getOperand(5));
8789 TmpInst.addOperand(Inst.getOperand(6));
8797 MCOperand &MO = Inst.getOperand(1);
8798 unsigned Mask = MO.getImm();
8799 ARMCC::CondCodes Cond = ARMCC::CondCodes(Inst.getOperand(0).getImm());
8801 // Set up the IT block state according to the IT instruction we just
8803 assert(!inITBlock() && "nested IT blocks?!");
8804 startExplicitITBlock(Cond, Mask);
8805 MO.setImm(getITMaskEncoding());
8815 // Assemblers should use the narrow encodings of these instructions when permissible.
8816 if ((isARMLowRegister(Inst.getOperand(1).getReg()) &&
8817 isARMLowRegister(Inst.getOperand(2).getReg())) &&
8818 Inst.getOperand(0).getReg() == Inst.getOperand(1).getReg() &&
8819 ((!inITBlock() && Inst.getOperand(5).getReg() == ARM::CPSR) ||
8820 (inITBlock() && Inst.getOperand(5).getReg() != ARM::CPSR)) &&
8821 (!static_cast<ARMOperand &>(*Operands[3]).isToken() ||
8822 !static_cast<ARMOperand &>(*Operands[3]).getToken().equals_lower(
8825 switch (Inst.getOpcode()) {
8826 default: llvm_unreachable("unexpected opcode");
8827 case ARM::t2LSLrr: NewOpc = ARM::tLSLrr; break;
8828 case ARM::t2LSRrr: NewOpc = ARM::tLSRrr; break;
8829 case ARM::t2ASRrr: NewOpc = ARM::tASRrr; break;
8830 case ARM::t2SBCrr: NewOpc = ARM::tSBC; break;
8831 case ARM::t2RORrr: NewOpc = ARM::tROR; break;
8832 case ARM::t2BICrr: NewOpc = ARM::tBIC; break;
8835 TmpInst.setOpcode(NewOpc);
8836 TmpInst.addOperand(Inst.getOperand(0));
8837 TmpInst.addOperand(Inst.getOperand(5));
8838 TmpInst.addOperand(Inst.getOperand(1));
8839 TmpInst.addOperand(Inst.getOperand(2));
8840 TmpInst.addOperand(Inst.getOperand(3));
8841 TmpInst.addOperand(Inst.getOperand(4));
8852 // Assemblers should use the narrow encodings of these instructions when permissible.
8853 // These instructions are special in that they are commutable, so shorter encodings
8854 // are available more often.
8855 if ((isARMLowRegister(Inst.getOperand(1).getReg()) &&
8856 isARMLowRegister(Inst.getOperand(2).getReg())) &&
8857 (Inst.getOperand(0).getReg() == Inst.getOperand(1).getReg() ||
8858 Inst.getOperand(0).getReg() == Inst.getOperand(2).getReg()) &&
8859 ((!inITBlock() && Inst.getOperand(5).getReg() == ARM::CPSR) ||
8860 (inITBlock() && Inst.getOperand(5).getReg() != ARM::CPSR)) &&
8861 (!static_cast<ARMOperand &>(*Operands[3]).isToken() ||
8862 !static_cast<ARMOperand &>(*Operands[3]).getToken().equals_lower(
8865 switch (Inst.getOpcode()) {
8866 default: llvm_unreachable("unexpected opcode");
8867 case ARM::t2ADCrr: NewOpc = ARM::tADC; break;
8868 case ARM::t2ANDrr: NewOpc = ARM::tAND; break;
8869 case ARM::t2EORrr: NewOpc = ARM::tEOR; break;
8870 case ARM::t2ORRrr: NewOpc = ARM::tORR; break;
8873 TmpInst.setOpcode(NewOpc);
8874 TmpInst.addOperand(Inst.getOperand(0));
8875 TmpInst.addOperand(Inst.getOperand(5));
8876 if (Inst.getOperand(0).getReg() == Inst.getOperand(1).getReg()) {
8877 TmpInst.addOperand(Inst.getOperand(1));
8878 TmpInst.addOperand(Inst.getOperand(2));
8880 TmpInst.addOperand(Inst.getOperand(2));
8881 TmpInst.addOperand(Inst.getOperand(1));
8883 TmpInst.addOperand(Inst.getOperand(3));
8884 TmpInst.addOperand(Inst.getOperand(4));
8894 unsigned ARMAsmParser::checkTargetMatchPredicate(MCInst &Inst) {
8895 // 16-bit thumb arithmetic instructions either require or preclude the 'S'
8896 // suffix depending on whether they're in an IT block or not.
8897 unsigned Opc = Inst.getOpcode();
8898 const MCInstrDesc &MCID = MII.get(Opc);
8899 if (MCID.TSFlags & ARMII::ThumbArithFlagSetting) {
8900 assert(MCID.hasOptionalDef() &&
8901 "optionally flag setting instruction missing optional def operand");
8902 assert(MCID.NumOperands == Inst.getNumOperands() &&
8903 "operand count mismatch!");
8904 // Find the optional-def operand (cc_out).
8907 !MCID.OpInfo[OpNo].isOptionalDef() && OpNo < MCID.NumOperands;
8910 // If we're parsing Thumb1, reject it completely.
8911 if (isThumbOne() && Inst.getOperand(OpNo).getReg() != ARM::CPSR)
8912 return Match_RequiresFlagSetting;
8913 // If we're parsing Thumb2, which form is legal depends on whether we're
8915 if (isThumbTwo() && Inst.getOperand(OpNo).getReg() != ARM::CPSR &&
8917 return Match_RequiresITBlock;
8918 if (isThumbTwo() && Inst.getOperand(OpNo).getReg() == ARM::CPSR &&
8920 return Match_RequiresNotITBlock;
8921 } else if (isThumbOne()) {
8922 // Some high-register supporting Thumb1 encodings only allow both registers
8923 // to be from r0-r7 when in Thumb2.
8924 if (Opc == ARM::tADDhirr && !hasV6MOps() &&
8925 isARMLowRegister(Inst.getOperand(1).getReg()) &&
8926 isARMLowRegister(Inst.getOperand(2).getReg()))
8927 return Match_RequiresThumb2;
8928 // Others only require ARMv6 or later.
8929 else if (Opc == ARM::tMOVr && !hasV6Ops() &&
8930 isARMLowRegister(Inst.getOperand(0).getReg()) &&
8931 isARMLowRegister(Inst.getOperand(1).getReg()))
8932 return Match_RequiresV6;
8935 for (unsigned I = 0; I < MCID.NumOperands; ++I)
8936 if (MCID.OpInfo[I].RegClass == ARM::rGPRRegClassID) {
8937 // rGPRRegClass excludes PC, and also excluded SP before ARMv8
8938 if ((Inst.getOperand(I).getReg() == ARM::SP) && !hasV8Ops())
8939 return Match_RequiresV8;
8940 else if (Inst.getOperand(I).getReg() == ARM::PC)
8941 return Match_InvalidOperand;
8944 return Match_Success;
8948 template <> inline bool IsCPSRDead<MCInst>(MCInst *Instr) {
8949 return true; // In an assembly source, no need to second-guess
8953 // Returns true if Inst is unpredictable if it is in and IT block, but is not
8954 // the last instruction in the block.
8955 bool ARMAsmParser::isITBlockTerminator(MCInst &Inst) const {
8956 const MCInstrDesc &MCID = MII.get(Inst.getOpcode());
8958 // All branch & call instructions terminate IT blocks.
8959 if (MCID.isTerminator() || MCID.isCall() || MCID.isReturn() ||
8960 MCID.isBranch() || MCID.isIndirectBranch())
8963 // Any arithmetic instruction which writes to the PC also terminates the IT
8965 for (unsigned OpIdx = 0; OpIdx < MCID.getNumDefs(); ++OpIdx) {
8966 MCOperand &Op = Inst.getOperand(OpIdx);
8967 if (Op.isReg() && Op.getReg() == ARM::PC)
8971 if (MCID.hasImplicitDefOfPhysReg(ARM::PC, MRI))
8974 // Instructions with variable operand lists, which write to the variable
8975 // operands. We only care about Thumb instructions here, as ARM instructions
8976 // obviously can't be in an IT block.
8977 switch (Inst.getOpcode()) {
8979 case ARM::t2LDMIA_UPD:
8981 case ARM::t2LDMDB_UPD:
8982 if (listContainsReg(Inst, 3, ARM::PC))
8986 if (listContainsReg(Inst, 2, ARM::PC))
8994 unsigned ARMAsmParser::MatchInstruction(OperandVector &Operands, MCInst &Inst,
8995 uint64_t &ErrorInfo,
8996 bool MatchingInlineAsm,
8997 bool &EmitInITBlock,
8999 // If we can't use an implicit IT block here, just match as normal.
9000 if (inExplicitITBlock() || !isThumbTwo() || !useImplicitITThumb())
9001 return MatchInstructionImpl(Operands, Inst, ErrorInfo, MatchingInlineAsm);
9003 // Try to match the instruction in an extension of the current IT block (if
9005 if (inImplicitITBlock()) {
9006 extendImplicitITBlock(ITState.Cond);
9007 if (MatchInstructionImpl(Operands, Inst, ErrorInfo, MatchingInlineAsm) ==
9009 // The match succeded, but we still have to check that the instruction is
9010 // valid in this implicit IT block.
9011 const MCInstrDesc &MCID = MII.get(Inst.getOpcode());
9012 if (MCID.isPredicable()) {
9013 ARMCC::CondCodes InstCond =
9014 (ARMCC::CondCodes)Inst.getOperand(MCID.findFirstPredOperandIdx())
9016 ARMCC::CondCodes ITCond = currentITCond();
9017 if (InstCond == ITCond) {
9018 EmitInITBlock = true;
9019 return Match_Success;
9020 } else if (InstCond == ARMCC::getOppositeCondition(ITCond)) {
9021 invertCurrentITCondition();
9022 EmitInITBlock = true;
9023 return Match_Success;
9027 rewindImplicitITPosition();
9030 // Finish the current IT block, and try to match outside any IT block.
9031 flushPendingInstructions(Out);
9032 unsigned PlainMatchResult =
9033 MatchInstructionImpl(Operands, Inst, ErrorInfo, MatchingInlineAsm);
9034 if (PlainMatchResult == Match_Success) {
9035 const MCInstrDesc &MCID = MII.get(Inst.getOpcode());
9036 if (MCID.isPredicable()) {
9037 ARMCC::CondCodes InstCond =
9038 (ARMCC::CondCodes)Inst.getOperand(MCID.findFirstPredOperandIdx())
9040 // Some forms of the branch instruction have their own condition code
9041 // fields, so can be conditionally executed without an IT block.
9042 if (Inst.getOpcode() == ARM::tBcc || Inst.getOpcode() == ARM::t2Bcc) {
9043 EmitInITBlock = false;
9044 return Match_Success;
9046 if (InstCond == ARMCC::AL) {
9047 EmitInITBlock = false;
9048 return Match_Success;
9051 EmitInITBlock = false;
9052 return Match_Success;
9056 // Try to match in a new IT block. The matcher doesn't check the actual
9057 // condition, so we create an IT block with a dummy condition, and fix it up
9058 // once we know the actual condition.
9059 startImplicitITBlock();
9060 if (MatchInstructionImpl(Operands, Inst, ErrorInfo, MatchingInlineAsm) ==
9062 const MCInstrDesc &MCID = MII.get(Inst.getOpcode());
9063 if (MCID.isPredicable()) {
9065 (ARMCC::CondCodes)Inst.getOperand(MCID.findFirstPredOperandIdx())
9067 EmitInITBlock = true;
9068 return Match_Success;
9071 discardImplicitITBlock();
9073 // If none of these succeed, return the error we got when trying to match
9074 // outside any IT blocks.
9075 EmitInITBlock = false;
9076 return PlainMatchResult;
9079 static const char *getSubtargetFeatureName(uint64_t Val);
9080 bool ARMAsmParser::MatchAndEmitInstruction(SMLoc IDLoc, unsigned &Opcode,
9081 OperandVector &Operands,
9082 MCStreamer &Out, uint64_t &ErrorInfo,
9083 bool MatchingInlineAsm) {
9085 unsigned MatchResult;
9086 bool PendConditionalInstruction = false;
9088 MatchResult = MatchInstruction(Operands, Inst, ErrorInfo, MatchingInlineAsm,
9089 PendConditionalInstruction, Out);
9091 switch (MatchResult) {
9093 // Context sensitive operand constraints aren't handled by the matcher,
9094 // so check them here.
9095 if (validateInstruction(Inst, Operands)) {
9096 // Still progress the IT block, otherwise one wrong condition causes
9097 // nasty cascading errors.
9098 forwardITPosition();
9102 { // processInstruction() updates inITBlock state, we need to save it away
9103 bool wasInITBlock = inITBlock();
9105 // Some instructions need post-processing to, for example, tweak which
9106 // encoding is selected. Loop on it while changes happen so the
9107 // individual transformations can chain off each other. E.g.,
9108 // tPOP(r8)->t2LDMIA_UPD(sp,r8)->t2STR_POST(sp,r8)
9109 while (processInstruction(Inst, Operands, Out))
9112 // Only after the instruction is fully processed, we can validate it
9113 if (wasInITBlock && hasV8Ops() && isThumb() &&
9114 !isV8EligibleForIT(&Inst)) {
9115 Warning(IDLoc, "deprecated instruction in IT block");
9119 // Only move forward at the very end so that everything in validate
9120 // and process gets a consistent answer about whether we're in an IT
9122 forwardITPosition();
9124 // ITasm is an ARM mode pseudo-instruction that just sets the ITblock and
9125 // doesn't actually encode.
9126 if (Inst.getOpcode() == ARM::ITasm)
9130 if (PendConditionalInstruction) {
9131 PendingConditionalInsts.push_back(Inst);
9132 if (isITBlockFull() || isITBlockTerminator(Inst))
9133 flushPendingInstructions(Out);
9135 Out.EmitInstruction(Inst, getSTI());
9138 case Match_MissingFeature: {
9139 assert(ErrorInfo && "Unknown missing feature!");
9140 // Special case the error message for the very common case where only
9141 // a single subtarget feature is missing (Thumb vs. ARM, e.g.).
9142 std::string Msg = "instruction requires:";
9144 for (unsigned i = 0; i < (sizeof(ErrorInfo)*8-1); ++i) {
9145 if (ErrorInfo & Mask) {
9147 Msg += getSubtargetFeatureName(ErrorInfo & Mask);
9151 return Error(IDLoc, Msg);
9153 case Match_InvalidOperand: {
9154 SMLoc ErrorLoc = IDLoc;
9155 if (ErrorInfo != ~0ULL) {
9156 if (ErrorInfo >= Operands.size())
9157 return Error(IDLoc, "too few operands for instruction");
9159 ErrorLoc = ((ARMOperand &)*Operands[ErrorInfo]).getStartLoc();
9160 if (ErrorLoc == SMLoc()) ErrorLoc = IDLoc;
9163 return Error(ErrorLoc, "invalid operand for instruction");
9165 case Match_MnemonicFail:
9166 return Error(IDLoc, "invalid instruction",
9167 ((ARMOperand &)*Operands[0]).getLocRange());
9168 case Match_RequiresNotITBlock:
9169 return Error(IDLoc, "flag setting instruction only valid outside IT block");
9170 case Match_RequiresITBlock:
9171 return Error(IDLoc, "instruction only valid inside IT block");
9172 case Match_RequiresV6:
9173 return Error(IDLoc, "instruction variant requires ARMv6 or later");
9174 case Match_RequiresThumb2:
9175 return Error(IDLoc, "instruction variant requires Thumb2");
9176 case Match_RequiresV8:
9177 return Error(IDLoc, "instruction variant requires ARMv8 or later");
9178 case Match_RequiresFlagSetting:
9179 return Error(IDLoc, "no flag-preserving variant of this instruction available");
9180 case Match_ImmRange0_15: {
9181 SMLoc ErrorLoc = ((ARMOperand &)*Operands[ErrorInfo]).getStartLoc();
9182 if (ErrorLoc == SMLoc()) ErrorLoc = IDLoc;
9183 return Error(ErrorLoc, "immediate operand must be in the range [0,15]");
9185 case Match_ImmRange0_239: {
9186 SMLoc ErrorLoc = ((ARMOperand &)*Operands[ErrorInfo]).getStartLoc();
9187 if (ErrorLoc == SMLoc()) ErrorLoc = IDLoc;
9188 return Error(ErrorLoc, "immediate operand must be in the range [0,239]");
9190 case Match_AlignedMemoryRequiresNone:
9191 case Match_DupAlignedMemoryRequiresNone:
9192 case Match_AlignedMemoryRequires16:
9193 case Match_DupAlignedMemoryRequires16:
9194 case Match_AlignedMemoryRequires32:
9195 case Match_DupAlignedMemoryRequires32:
9196 case Match_AlignedMemoryRequires64:
9197 case Match_DupAlignedMemoryRequires64:
9198 case Match_AlignedMemoryRequires64or128:
9199 case Match_DupAlignedMemoryRequires64or128:
9200 case Match_AlignedMemoryRequires64or128or256:
9202 SMLoc ErrorLoc = ((ARMOperand &)*Operands[ErrorInfo]).getAlignmentLoc();
9203 if (ErrorLoc == SMLoc()) ErrorLoc = IDLoc;
9204 switch (MatchResult) {
9206 llvm_unreachable("Missing Match_Aligned type");
9207 case Match_AlignedMemoryRequiresNone:
9208 case Match_DupAlignedMemoryRequiresNone:
9209 return Error(ErrorLoc, "alignment must be omitted");
9210 case Match_AlignedMemoryRequires16:
9211 case Match_DupAlignedMemoryRequires16:
9212 return Error(ErrorLoc, "alignment must be 16 or omitted");
9213 case Match_AlignedMemoryRequires32:
9214 case Match_DupAlignedMemoryRequires32:
9215 return Error(ErrorLoc, "alignment must be 32 or omitted");
9216 case Match_AlignedMemoryRequires64:
9217 case Match_DupAlignedMemoryRequires64:
9218 return Error(ErrorLoc, "alignment must be 64 or omitted");
9219 case Match_AlignedMemoryRequires64or128:
9220 case Match_DupAlignedMemoryRequires64or128:
9221 return Error(ErrorLoc, "alignment must be 64, 128 or omitted");
9222 case Match_AlignedMemoryRequires64or128or256:
9223 return Error(ErrorLoc, "alignment must be 64, 128, 256 or omitted");
9228 llvm_unreachable("Implement any new match types added!");
9231 /// parseDirective parses the arm specific directives
9232 bool ARMAsmParser::ParseDirective(AsmToken DirectiveID) {
9233 const MCObjectFileInfo::Environment Format =
9234 getContext().getObjectFileInfo()->getObjectFileType();
9235 bool IsMachO = Format == MCObjectFileInfo::IsMachO;
9236 bool IsCOFF = Format == MCObjectFileInfo::IsCOFF;
9238 StringRef IDVal = DirectiveID.getIdentifier();
9239 if (IDVal == ".word")
9240 parseLiteralValues(4, DirectiveID.getLoc());
9241 else if (IDVal == ".short" || IDVal == ".hword")
9242 parseLiteralValues(2, DirectiveID.getLoc());
9243 else if (IDVal == ".thumb")
9244 parseDirectiveThumb(DirectiveID.getLoc());
9245 else if (IDVal == ".arm")
9246 parseDirectiveARM(DirectiveID.getLoc());
9247 else if (IDVal == ".thumb_func")
9248 parseDirectiveThumbFunc(DirectiveID.getLoc());
9249 else if (IDVal == ".code")
9250 parseDirectiveCode(DirectiveID.getLoc());
9251 else if (IDVal == ".syntax")
9252 parseDirectiveSyntax(DirectiveID.getLoc());
9253 else if (IDVal == ".unreq")
9254 parseDirectiveUnreq(DirectiveID.getLoc());
9255 else if (IDVal == ".fnend")
9256 parseDirectiveFnEnd(DirectiveID.getLoc());
9257 else if (IDVal == ".cantunwind")
9258 parseDirectiveCantUnwind(DirectiveID.getLoc());
9259 else if (IDVal == ".personality")
9260 parseDirectivePersonality(DirectiveID.getLoc());
9261 else if (IDVal == ".handlerdata")
9262 parseDirectiveHandlerData(DirectiveID.getLoc());
9263 else if (IDVal == ".setfp")
9264 parseDirectiveSetFP(DirectiveID.getLoc());
9265 else if (IDVal == ".pad")
9266 parseDirectivePad(DirectiveID.getLoc());
9267 else if (IDVal == ".save")
9268 parseDirectiveRegSave(DirectiveID.getLoc(), false);
9269 else if (IDVal == ".vsave")
9270 parseDirectiveRegSave(DirectiveID.getLoc(), true);
9271 else if (IDVal == ".ltorg" || IDVal == ".pool")
9272 parseDirectiveLtorg(DirectiveID.getLoc());
9273 else if (IDVal == ".even")
9274 parseDirectiveEven(DirectiveID.getLoc());
9275 else if (IDVal == ".personalityindex")
9276 parseDirectivePersonalityIndex(DirectiveID.getLoc());
9277 else if (IDVal == ".unwind_raw")
9278 parseDirectiveUnwindRaw(DirectiveID.getLoc());
9279 else if (IDVal == ".movsp")
9280 parseDirectiveMovSP(DirectiveID.getLoc());
9281 else if (IDVal == ".arch_extension")
9282 parseDirectiveArchExtension(DirectiveID.getLoc());
9283 else if (IDVal == ".align")
9284 return parseDirectiveAlign(DirectiveID.getLoc()); // Use Generic on failure.
9285 else if (IDVal == ".thumb_set")
9286 parseDirectiveThumbSet(DirectiveID.getLoc());
9287 else if (!IsMachO && !IsCOFF) {
9288 if (IDVal == ".arch")
9289 parseDirectiveArch(DirectiveID.getLoc());
9290 else if (IDVal == ".cpu")
9291 parseDirectiveCPU(DirectiveID.getLoc());
9292 else if (IDVal == ".eabi_attribute")
9293 parseDirectiveEabiAttr(DirectiveID.getLoc());
9294 else if (IDVal == ".fpu")
9295 parseDirectiveFPU(DirectiveID.getLoc());
9296 else if (IDVal == ".fnstart")
9297 parseDirectiveFnStart(DirectiveID.getLoc());
9298 else if (IDVal == ".inst")
9299 parseDirectiveInst(DirectiveID.getLoc());
9300 else if (IDVal == ".inst.n")
9301 parseDirectiveInst(DirectiveID.getLoc(), 'n');
9302 else if (IDVal == ".inst.w")
9303 parseDirectiveInst(DirectiveID.getLoc(), 'w');
9304 else if (IDVal == ".object_arch")
9305 parseDirectiveObjectArch(DirectiveID.getLoc());
9306 else if (IDVal == ".tlsdescseq")
9307 parseDirectiveTLSDescSeq(DirectiveID.getLoc());
9315 /// parseLiteralValues
9316 /// ::= .hword expression [, expression]*
9317 /// ::= .short expression [, expression]*
9318 /// ::= .word expression [, expression]*
9319 bool ARMAsmParser::parseLiteralValues(unsigned Size, SMLoc L) {
9320 auto parseOne = [&]() -> bool {
9321 const MCExpr *Value;
9322 if (getParser().parseExpression(Value))
9324 getParser().getStreamer().EmitValue(Value, Size, L);
9327 return (parseMany(parseOne));
9330 /// parseDirectiveThumb
9332 bool ARMAsmParser::parseDirectiveThumb(SMLoc L) {
9333 if (parseToken(AsmToken::EndOfStatement, "unexpected token in directive") ||
9334 check(!hasThumb(), L, "target does not support Thumb mode"))
9340 getParser().getStreamer().EmitAssemblerFlag(MCAF_Code16);
9344 /// parseDirectiveARM
9346 bool ARMAsmParser::parseDirectiveARM(SMLoc L) {
9347 if (parseToken(AsmToken::EndOfStatement, "unexpected token in directive") ||
9348 check(!hasARM(), L, "target does not support ARM mode"))
9353 getParser().getStreamer().EmitAssemblerFlag(MCAF_Code32);
9357 void ARMAsmParser::onLabelParsed(MCSymbol *Symbol) {
9358 // We need to flush the current implicit IT block on a label, because it is
9359 // not legal to branch into an IT block.
9360 flushPendingInstructions(getStreamer());
9361 if (NextSymbolIsThumb) {
9362 getParser().getStreamer().EmitThumbFunc(Symbol);
9363 NextSymbolIsThumb = false;
9367 /// parseDirectiveThumbFunc
9368 /// ::= .thumbfunc symbol_name
9369 bool ARMAsmParser::parseDirectiveThumbFunc(SMLoc L) {
9370 MCAsmParser &Parser = getParser();
9371 const auto Format = getContext().getObjectFileInfo()->getObjectFileType();
9372 bool IsMachO = Format == MCObjectFileInfo::IsMachO;
9374 // Darwin asm has (optionally) function name after .thumb_func direction
9378 if (Parser.getTok().is(AsmToken::Identifier) ||
9379 Parser.getTok().is(AsmToken::String)) {
9380 MCSymbol *Func = getParser().getContext().getOrCreateSymbol(
9381 Parser.getTok().getIdentifier());
9382 getParser().getStreamer().EmitThumbFunc(Func);
9384 if (parseToken(AsmToken::EndOfStatement,
9385 "unexpected token in '.thumb_func' directive"))
9391 if (parseToken(AsmToken::EndOfStatement,
9392 "unexpected token in '.thumb_func' directive"))
9395 NextSymbolIsThumb = true;
9399 /// parseDirectiveSyntax
9400 /// ::= .syntax unified | divided
9401 bool ARMAsmParser::parseDirectiveSyntax(SMLoc L) {
9402 MCAsmParser &Parser = getParser();
9403 const AsmToken &Tok = Parser.getTok();
9404 if (Tok.isNot(AsmToken::Identifier)) {
9405 Error(L, "unexpected token in .syntax directive");
9409 StringRef Mode = Tok.getString();
9411 if (check(Mode == "divided" || Mode == "DIVIDED", L,
9412 "'.syntax divided' arm assembly not supported") ||
9413 check(Mode != "unified" && Mode != "UNIFIED", L,
9414 "unrecognized syntax mode in .syntax directive") ||
9415 parseToken(AsmToken::EndOfStatement, "unexpected token in directive"))
9418 // TODO tell the MC streamer the mode
9419 // getParser().getStreamer().Emit???();
9423 /// parseDirectiveCode
9424 /// ::= .code 16 | 32
9425 bool ARMAsmParser::parseDirectiveCode(SMLoc L) {
9426 MCAsmParser &Parser = getParser();
9427 const AsmToken &Tok = Parser.getTok();
9428 if (Tok.isNot(AsmToken::Integer))
9429 return Error(L, "unexpected token in .code directive");
9430 int64_t Val = Parser.getTok().getIntVal();
9431 if (Val != 16 && Val != 32) {
9432 Error(L, "invalid operand to .code directive");
9437 if (parseToken(AsmToken::EndOfStatement, "unexpected token in directive"))
9442 return Error(L, "target does not support Thumb mode");
9446 getParser().getStreamer().EmitAssemblerFlag(MCAF_Code16);
9449 return Error(L, "target does not support ARM mode");
9453 getParser().getStreamer().EmitAssemblerFlag(MCAF_Code32);
9459 /// parseDirectiveReq
9460 /// ::= name .req registername
9461 bool ARMAsmParser::parseDirectiveReq(StringRef Name, SMLoc L) {
9462 MCAsmParser &Parser = getParser();
9463 Parser.Lex(); // Eat the '.req' token.
9465 SMLoc SRegLoc, ERegLoc;
9466 if (check(ParseRegister(Reg, SRegLoc, ERegLoc), SRegLoc,
9467 "register name expected") ||
9468 parseToken(AsmToken::EndOfStatement,
9469 "unexpected input in .req directive."))
9472 if (RegisterReqs.insert(std::make_pair(Name, Reg)).first->second != Reg)
9473 return Error(SRegLoc,
9474 "redefinition of '" + Name + "' does not match original.");
9479 /// parseDirectiveUneq
9480 /// ::= .unreq registername
9481 bool ARMAsmParser::parseDirectiveUnreq(SMLoc L) {
9482 MCAsmParser &Parser = getParser();
9483 if (Parser.getTok().isNot(AsmToken::Identifier))
9484 return Error(L, "unexpected input in .unreq directive.");
9485 RegisterReqs.erase(Parser.getTok().getIdentifier().lower());
9486 Parser.Lex(); // Eat the identifier.
9487 if (parseToken(AsmToken::EndOfStatement,
9488 "unexpected input in '.unreq' directive"))
9493 // After changing arch/CPU, try to put the ARM/Thumb mode back to what it was
9494 // before, if supported by the new target, or emit mapping symbols for the mode
9496 void ARMAsmParser::FixModeAfterArchChange(bool WasThumb, SMLoc Loc) {
9497 if (WasThumb != isThumb()) {
9498 if (WasThumb && hasThumb()) {
9499 // Stay in Thumb mode
9501 } else if (!WasThumb && hasARM()) {
9505 // Mode switch forced, because the new arch doesn't support the old mode.
9506 getParser().getStreamer().EmitAssemblerFlag(isThumb() ? MCAF_Code16
9508 // Warn about the implcit mode switch. GAS does not switch modes here,
9509 // but instead stays in the old mode, reporting an error on any following
9510 // instructions as the mode does not exist on the target.
9511 Warning(Loc, Twine("new target does not support ") +
9512 (WasThumb ? "thumb" : "arm") + " mode, switching to " +
9513 (!WasThumb ? "thumb" : "arm") + " mode");
9518 /// parseDirectiveArch
9520 bool ARMAsmParser::parseDirectiveArch(SMLoc L) {
9521 StringRef Arch = getParser().parseStringToEndOfStatement().trim();
9522 unsigned ID = ARM::parseArch(Arch);
9524 if (ID == ARM::AK_INVALID)
9525 return Error(L, "Unknown arch name");
9527 bool WasThumb = isThumb();
9529 MCSubtargetInfo &STI = copySTI();
9530 STI.setDefaultFeatures("", ("+" + ARM::getArchName(ID)).str());
9531 setAvailableFeatures(ComputeAvailableFeatures(STI.getFeatureBits()));
9532 FixModeAfterArchChange(WasThumb, L);
9534 getTargetStreamer().emitArch(ID);
9538 /// parseDirectiveEabiAttr
9539 /// ::= .eabi_attribute int, int [, "str"]
9540 /// ::= .eabi_attribute Tag_name, int [, "str"]
9541 bool ARMAsmParser::parseDirectiveEabiAttr(SMLoc L) {
9542 MCAsmParser &Parser = getParser();
9545 TagLoc = Parser.getTok().getLoc();
9546 if (Parser.getTok().is(AsmToken::Identifier)) {
9547 StringRef Name = Parser.getTok().getIdentifier();
9548 Tag = ARMBuildAttrs::AttrTypeFromString(Name);
9550 Error(TagLoc, "attribute name not recognised: " + Name);
9555 const MCExpr *AttrExpr;
9557 TagLoc = Parser.getTok().getLoc();
9558 if (Parser.parseExpression(AttrExpr))
9561 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(AttrExpr);
9562 if (check(!CE, TagLoc, "expected numeric constant"))
9565 Tag = CE->getValue();
9568 if (Parser.parseToken(AsmToken::Comma, "comma expected"))
9571 StringRef StringValue = "";
9572 bool IsStringValue = false;
9574 int64_t IntegerValue = 0;
9575 bool IsIntegerValue = false;
9577 if (Tag == ARMBuildAttrs::CPU_raw_name || Tag == ARMBuildAttrs::CPU_name)
9578 IsStringValue = true;
9579 else if (Tag == ARMBuildAttrs::compatibility) {
9580 IsStringValue = true;
9581 IsIntegerValue = true;
9582 } else if (Tag < 32 || Tag % 2 == 0)
9583 IsIntegerValue = true;
9584 else if (Tag % 2 == 1)
9585 IsStringValue = true;
9587 llvm_unreachable("invalid tag type");
9589 if (IsIntegerValue) {
9590 const MCExpr *ValueExpr;
9591 SMLoc ValueExprLoc = Parser.getTok().getLoc();
9592 if (Parser.parseExpression(ValueExpr))
9595 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(ValueExpr);
9597 return Error(ValueExprLoc, "expected numeric constant");
9598 IntegerValue = CE->getValue();
9601 if (Tag == ARMBuildAttrs::compatibility) {
9602 if (Parser.parseToken(AsmToken::Comma, "comma expected"))
9606 if (IsStringValue) {
9607 if (Parser.getTok().isNot(AsmToken::String))
9608 return Error(Parser.getTok().getLoc(), "bad string constant");
9610 StringValue = Parser.getTok().getStringContents();
9614 if (Parser.parseToken(AsmToken::EndOfStatement,
9615 "unexpected token in '.eabi_attribute' directive"))
9618 if (IsIntegerValue && IsStringValue) {
9619 assert(Tag == ARMBuildAttrs::compatibility);
9620 getTargetStreamer().emitIntTextAttribute(Tag, IntegerValue, StringValue);
9621 } else if (IsIntegerValue)
9622 getTargetStreamer().emitAttribute(Tag, IntegerValue);
9623 else if (IsStringValue)
9624 getTargetStreamer().emitTextAttribute(Tag, StringValue);
9628 /// parseDirectiveCPU
9630 bool ARMAsmParser::parseDirectiveCPU(SMLoc L) {
9631 StringRef CPU = getParser().parseStringToEndOfStatement().trim();
9632 getTargetStreamer().emitTextAttribute(ARMBuildAttrs::CPU_name, CPU);
9634 // FIXME: This is using table-gen data, but should be moved to
9635 // ARMTargetParser once that is table-gen'd.
9636 if (!getSTI().isCPUStringValid(CPU))
9637 return Error(L, "Unknown CPU name");
9639 bool WasThumb = isThumb();
9640 MCSubtargetInfo &STI = copySTI();
9641 STI.setDefaultFeatures(CPU, "");
9642 setAvailableFeatures(ComputeAvailableFeatures(STI.getFeatureBits()));
9643 FixModeAfterArchChange(WasThumb, L);
9647 /// parseDirectiveFPU
9649 bool ARMAsmParser::parseDirectiveFPU(SMLoc L) {
9650 SMLoc FPUNameLoc = getTok().getLoc();
9651 StringRef FPU = getParser().parseStringToEndOfStatement().trim();
9653 unsigned ID = ARM::parseFPU(FPU);
9654 std::vector<StringRef> Features;
9655 if (!ARM::getFPUFeatures(ID, Features))
9656 return Error(FPUNameLoc, "Unknown FPU name");
9658 MCSubtargetInfo &STI = copySTI();
9659 for (auto Feature : Features)
9660 STI.ApplyFeatureFlag(Feature);
9661 setAvailableFeatures(ComputeAvailableFeatures(STI.getFeatureBits()));
9663 getTargetStreamer().emitFPU(ID);
9667 /// parseDirectiveFnStart
9669 bool ARMAsmParser::parseDirectiveFnStart(SMLoc L) {
9670 if (parseToken(AsmToken::EndOfStatement,
9671 "unexpected token in '.fnstart' directive"))
9674 if (UC.hasFnStart()) {
9675 Error(L, ".fnstart starts before the end of previous one");
9676 UC.emitFnStartLocNotes();
9680 // Reset the unwind directives parser state
9683 getTargetStreamer().emitFnStart();
9685 UC.recordFnStart(L);
9689 /// parseDirectiveFnEnd
9691 bool ARMAsmParser::parseDirectiveFnEnd(SMLoc L) {
9692 if (parseToken(AsmToken::EndOfStatement,
9693 "unexpected token in '.fnend' directive"))
9695 // Check the ordering of unwind directives
9696 if (!UC.hasFnStart())
9697 return Error(L, ".fnstart must precede .fnend directive");
9699 // Reset the unwind directives parser state
9700 getTargetStreamer().emitFnEnd();
9706 /// parseDirectiveCantUnwind
9708 bool ARMAsmParser::parseDirectiveCantUnwind(SMLoc L) {
9709 if (parseToken(AsmToken::EndOfStatement,
9710 "unexpected token in '.cantunwind' directive"))
9713 UC.recordCantUnwind(L);
9714 // Check the ordering of unwind directives
9715 if (check(!UC.hasFnStart(), L, ".fnstart must precede .cantunwind directive"))
9718 if (UC.hasHandlerData()) {
9719 Error(L, ".cantunwind can't be used with .handlerdata directive");
9720 UC.emitHandlerDataLocNotes();
9723 if (UC.hasPersonality()) {
9724 Error(L, ".cantunwind can't be used with .personality directive");
9725 UC.emitPersonalityLocNotes();
9729 getTargetStreamer().emitCantUnwind();
9733 /// parseDirectivePersonality
9734 /// ::= .personality name
9735 bool ARMAsmParser::parseDirectivePersonality(SMLoc L) {
9736 MCAsmParser &Parser = getParser();
9737 bool HasExistingPersonality = UC.hasPersonality();
9739 // Parse the name of the personality routine
9740 if (Parser.getTok().isNot(AsmToken::Identifier))
9741 return Error(L, "unexpected input in .personality directive.");
9742 StringRef Name(Parser.getTok().getIdentifier());
9745 if (parseToken(AsmToken::EndOfStatement,
9746 "unexpected token in '.personality' directive"))
9749 UC.recordPersonality(L);
9751 // Check the ordering of unwind directives
9752 if (!UC.hasFnStart())
9753 return Error(L, ".fnstart must precede .personality directive");
9754 if (UC.cantUnwind()) {
9755 Error(L, ".personality can't be used with .cantunwind directive");
9756 UC.emitCantUnwindLocNotes();
9759 if (UC.hasHandlerData()) {
9760 Error(L, ".personality must precede .handlerdata directive");
9761 UC.emitHandlerDataLocNotes();
9764 if (HasExistingPersonality) {
9765 Error(L, "multiple personality directives");
9766 UC.emitPersonalityLocNotes();
9770 MCSymbol *PR = getParser().getContext().getOrCreateSymbol(Name);
9771 getTargetStreamer().emitPersonality(PR);
9775 /// parseDirectiveHandlerData
9776 /// ::= .handlerdata
9777 bool ARMAsmParser::parseDirectiveHandlerData(SMLoc L) {
9778 if (parseToken(AsmToken::EndOfStatement,
9779 "unexpected token in '.handlerdata' directive"))
9782 UC.recordHandlerData(L);
9783 // Check the ordering of unwind directives
9784 if (!UC.hasFnStart())
9785 return Error(L, ".fnstart must precede .personality directive");
9786 if (UC.cantUnwind()) {
9787 Error(L, ".handlerdata can't be used with .cantunwind directive");
9788 UC.emitCantUnwindLocNotes();
9792 getTargetStreamer().emitHandlerData();
9796 /// parseDirectiveSetFP
9797 /// ::= .setfp fpreg, spreg [, offset]
9798 bool ARMAsmParser::parseDirectiveSetFP(SMLoc L) {
9799 MCAsmParser &Parser = getParser();
9800 // Check the ordering of unwind directives
9801 if (check(!UC.hasFnStart(), L, ".fnstart must precede .setfp directive") ||
9802 check(UC.hasHandlerData(), L,
9803 ".setfp must precede .handlerdata directive"))
9807 SMLoc FPRegLoc = Parser.getTok().getLoc();
9808 int FPReg = tryParseRegister();
9810 if (check(FPReg == -1, FPRegLoc, "frame pointer register expected") ||
9811 Parser.parseToken(AsmToken::Comma, "comma expected"))
9815 SMLoc SPRegLoc = Parser.getTok().getLoc();
9816 int SPReg = tryParseRegister();
9817 if (check(SPReg == -1, SPRegLoc, "stack pointer register expected") ||
9818 check(SPReg != ARM::SP && SPReg != UC.getFPReg(), SPRegLoc,
9819 "register should be either $sp or the latest fp register"))
9822 // Update the frame pointer register
9823 UC.saveFPReg(FPReg);
9827 if (Parser.parseOptionalToken(AsmToken::Comma)) {
9828 if (Parser.getTok().isNot(AsmToken::Hash) &&
9829 Parser.getTok().isNot(AsmToken::Dollar))
9830 return Error(Parser.getTok().getLoc(), "'#' expected");
9831 Parser.Lex(); // skip hash token.
9833 const MCExpr *OffsetExpr;
9834 SMLoc ExLoc = Parser.getTok().getLoc();
9836 if (getParser().parseExpression(OffsetExpr, EndLoc))
9837 return Error(ExLoc, "malformed setfp offset");
9838 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(OffsetExpr);
9839 if (check(!CE, ExLoc, "setfp offset must be an immediate"))
9841 Offset = CE->getValue();
9844 if (Parser.parseToken(AsmToken::EndOfStatement))
9847 getTargetStreamer().emitSetFP(static_cast<unsigned>(FPReg),
9848 static_cast<unsigned>(SPReg), Offset);
9854 bool ARMAsmParser::parseDirectivePad(SMLoc L) {
9855 MCAsmParser &Parser = getParser();
9856 // Check the ordering of unwind directives
9857 if (!UC.hasFnStart())
9858 return Error(L, ".fnstart must precede .pad directive");
9859 if (UC.hasHandlerData())
9860 return Error(L, ".pad must precede .handlerdata directive");
9863 if (Parser.getTok().isNot(AsmToken::Hash) &&
9864 Parser.getTok().isNot(AsmToken::Dollar))
9865 return Error(Parser.getTok().getLoc(), "'#' expected");
9866 Parser.Lex(); // skip hash token.
9868 const MCExpr *OffsetExpr;
9869 SMLoc ExLoc = Parser.getTok().getLoc();
9871 if (getParser().parseExpression(OffsetExpr, EndLoc))
9872 return Error(ExLoc, "malformed pad offset");
9873 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(OffsetExpr);
9875 return Error(ExLoc, "pad offset must be an immediate");
9877 if (parseToken(AsmToken::EndOfStatement,
9878 "unexpected token in '.pad' directive"))
9881 getTargetStreamer().emitPad(CE->getValue());
9885 /// parseDirectiveRegSave
9886 /// ::= .save { registers }
9887 /// ::= .vsave { registers }
9888 bool ARMAsmParser::parseDirectiveRegSave(SMLoc L, bool IsVector) {
9889 // Check the ordering of unwind directives
9890 if (!UC.hasFnStart())
9891 return Error(L, ".fnstart must precede .save or .vsave directives");
9892 if (UC.hasHandlerData())
9893 return Error(L, ".save or .vsave must precede .handlerdata directive");
9895 // RAII object to make sure parsed operands are deleted.
9896 SmallVector<std::unique_ptr<MCParsedAsmOperand>, 1> Operands;
9898 // Parse the register list
9899 if (parseRegisterList(Operands) ||
9900 parseToken(AsmToken::EndOfStatement, "unexpected token in directive"))
9902 ARMOperand &Op = (ARMOperand &)*Operands[0];
9903 if (!IsVector && !Op.isRegList())
9904 return Error(L, ".save expects GPR registers");
9905 if (IsVector && !Op.isDPRRegList())
9906 return Error(L, ".vsave expects DPR registers");
9908 getTargetStreamer().emitRegSave(Op.getRegList(), IsVector);
9912 /// parseDirectiveInst
9913 /// ::= .inst opcode [, ...]
9914 /// ::= .inst.n opcode [, ...]
9915 /// ::= .inst.w opcode [, ...]
9916 bool ARMAsmParser::parseDirectiveInst(SMLoc Loc, char Suffix) {
9927 return Error(Loc, "cannot determine Thumb instruction size, "
9928 "use inst.n/inst.w instead");
9932 return Error(Loc, "width suffixes are invalid in ARM mode");
9935 auto parseOne = [&]() -> bool {
9937 if (getParser().parseExpression(Expr))
9939 const MCConstantExpr *Value = dyn_cast_or_null<MCConstantExpr>(Expr);
9941 return Error(Loc, "expected constant expression");
9946 if (Value->getValue() > 0xffff)
9947 return Error(Loc, "inst.n operand is too big, use inst.w instead");
9950 if (Value->getValue() > 0xffffffff)
9951 return Error(Loc, StringRef(Suffix ? "inst.w" : "inst") +
9952 " operand is too big");
9955 llvm_unreachable("only supported widths are 2 and 4");
9958 getTargetStreamer().emitInst(Value->getValue(), Suffix);
9962 if (parseOptionalToken(AsmToken::EndOfStatement))
9963 return Error(Loc, "expected expression following directive");
9964 if (parseMany(parseOne))
9969 /// parseDirectiveLtorg
9970 /// ::= .ltorg | .pool
9971 bool ARMAsmParser::parseDirectiveLtorg(SMLoc L) {
9972 if (parseToken(AsmToken::EndOfStatement, "unexpected token in directive"))
9974 getTargetStreamer().emitCurrentConstantPool();
9978 bool ARMAsmParser::parseDirectiveEven(SMLoc L) {
9979 const MCSection *Section = getStreamer().getCurrentSectionOnly();
9981 if (parseToken(AsmToken::EndOfStatement, "unexpected token in directive"))
9985 getStreamer().InitSections(false);
9986 Section = getStreamer().getCurrentSectionOnly();
9989 assert(Section && "must have section to emit alignment");
9990 if (Section->UseCodeAlign())
9991 getStreamer().EmitCodeAlignment(2);
9993 getStreamer().EmitValueToAlignment(2);
9998 /// parseDirectivePersonalityIndex
9999 /// ::= .personalityindex index
10000 bool ARMAsmParser::parseDirectivePersonalityIndex(SMLoc L) {
10001 MCAsmParser &Parser = getParser();
10002 bool HasExistingPersonality = UC.hasPersonality();
10004 const MCExpr *IndexExpression;
10005 SMLoc IndexLoc = Parser.getTok().getLoc();
10006 if (Parser.parseExpression(IndexExpression) ||
10007 parseToken(AsmToken::EndOfStatement,
10008 "unexpected token in '.personalityindex' directive")) {
10012 UC.recordPersonalityIndex(L);
10014 if (!UC.hasFnStart()) {
10015 return Error(L, ".fnstart must precede .personalityindex directive");
10017 if (UC.cantUnwind()) {
10018 Error(L, ".personalityindex cannot be used with .cantunwind");
10019 UC.emitCantUnwindLocNotes();
10022 if (UC.hasHandlerData()) {
10023 Error(L, ".personalityindex must precede .handlerdata directive");
10024 UC.emitHandlerDataLocNotes();
10027 if (HasExistingPersonality) {
10028 Error(L, "multiple personality directives");
10029 UC.emitPersonalityLocNotes();
10033 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(IndexExpression);
10035 return Error(IndexLoc, "index must be a constant number");
10036 if (CE->getValue() < 0 || CE->getValue() >= ARM::EHABI::NUM_PERSONALITY_INDEX)
10037 return Error(IndexLoc,
10038 "personality routine index should be in range [0-3]");
10040 getTargetStreamer().emitPersonalityIndex(CE->getValue());
10044 /// parseDirectiveUnwindRaw
10045 /// ::= .unwind_raw offset, opcode [, opcode...]
10046 bool ARMAsmParser::parseDirectiveUnwindRaw(SMLoc L) {
10047 MCAsmParser &Parser = getParser();
10048 int64_t StackOffset;
10049 const MCExpr *OffsetExpr;
10050 SMLoc OffsetLoc = getLexer().getLoc();
10052 if (!UC.hasFnStart())
10053 return Error(L, ".fnstart must precede .unwind_raw directives");
10054 if (getParser().parseExpression(OffsetExpr))
10055 return Error(OffsetLoc, "expected expression");
10057 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(OffsetExpr);
10059 return Error(OffsetLoc, "offset must be a constant");
10061 StackOffset = CE->getValue();
10063 if (Parser.parseToken(AsmToken::Comma, "expected comma"))
10066 SmallVector<uint8_t, 16> Opcodes;
10068 auto parseOne = [&]() -> bool {
10070 SMLoc OpcodeLoc = getLexer().getLoc();
10071 if (check(getLexer().is(AsmToken::EndOfStatement) ||
10072 Parser.parseExpression(OE),
10073 OpcodeLoc, "expected opcode expression"))
10075 const MCConstantExpr *OC = dyn_cast<MCConstantExpr>(OE);
10077 return Error(OpcodeLoc, "opcode value must be a constant");
10078 const int64_t Opcode = OC->getValue();
10079 if (Opcode & ~0xff)
10080 return Error(OpcodeLoc, "invalid opcode");
10081 Opcodes.push_back(uint8_t(Opcode));
10085 // Must have at least 1 element
10086 SMLoc OpcodeLoc = getLexer().getLoc();
10087 if (parseOptionalToken(AsmToken::EndOfStatement))
10088 return Error(OpcodeLoc, "expected opcode expression");
10089 if (parseMany(parseOne))
10092 getTargetStreamer().emitUnwindRaw(StackOffset, Opcodes);
10096 /// parseDirectiveTLSDescSeq
10097 /// ::= .tlsdescseq tls-variable
10098 bool ARMAsmParser::parseDirectiveTLSDescSeq(SMLoc L) {
10099 MCAsmParser &Parser = getParser();
10101 if (getLexer().isNot(AsmToken::Identifier))
10102 return TokError("expected variable after '.tlsdescseq' directive");
10104 const MCSymbolRefExpr *SRE =
10105 MCSymbolRefExpr::create(Parser.getTok().getIdentifier(),
10106 MCSymbolRefExpr::VK_ARM_TLSDESCSEQ, getContext());
10109 if (parseToken(AsmToken::EndOfStatement,
10110 "unexpected token in '.tlsdescseq' directive"))
10113 getTargetStreamer().AnnotateTLSDescriptorSequence(SRE);
10117 /// parseDirectiveMovSP
10118 /// ::= .movsp reg [, #offset]
10119 bool ARMAsmParser::parseDirectiveMovSP(SMLoc L) {
10120 MCAsmParser &Parser = getParser();
10121 if (!UC.hasFnStart())
10122 return Error(L, ".fnstart must precede .movsp directives");
10123 if (UC.getFPReg() != ARM::SP)
10124 return Error(L, "unexpected .movsp directive");
10126 SMLoc SPRegLoc = Parser.getTok().getLoc();
10127 int SPReg = tryParseRegister();
10129 return Error(SPRegLoc, "register expected");
10130 if (SPReg == ARM::SP || SPReg == ARM::PC)
10131 return Error(SPRegLoc, "sp and pc are not permitted in .movsp directive");
10133 int64_t Offset = 0;
10134 if (Parser.parseOptionalToken(AsmToken::Comma)) {
10135 if (Parser.parseToken(AsmToken::Hash, "expected #constant"))
10138 const MCExpr *OffsetExpr;
10139 SMLoc OffsetLoc = Parser.getTok().getLoc();
10141 if (Parser.parseExpression(OffsetExpr))
10142 return Error(OffsetLoc, "malformed offset expression");
10144 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(OffsetExpr);
10146 return Error(OffsetLoc, "offset must be an immediate constant");
10148 Offset = CE->getValue();
10151 if (parseToken(AsmToken::EndOfStatement,
10152 "unexpected token in '.movsp' directive"))
10155 getTargetStreamer().emitMovSP(SPReg, Offset);
10156 UC.saveFPReg(SPReg);
10161 /// parseDirectiveObjectArch
10162 /// ::= .object_arch name
10163 bool ARMAsmParser::parseDirectiveObjectArch(SMLoc L) {
10164 MCAsmParser &Parser = getParser();
10165 if (getLexer().isNot(AsmToken::Identifier))
10166 return Error(getLexer().getLoc(), "unexpected token");
10168 StringRef Arch = Parser.getTok().getString();
10169 SMLoc ArchLoc = Parser.getTok().getLoc();
10172 unsigned ID = ARM::parseArch(Arch);
10174 if (ID == ARM::AK_INVALID)
10175 return Error(ArchLoc, "unknown architecture '" + Arch + "'");
10176 if (parseToken(AsmToken::EndOfStatement))
10179 getTargetStreamer().emitObjectArch(ID);
10183 /// parseDirectiveAlign
10185 bool ARMAsmParser::parseDirectiveAlign(SMLoc L) {
10186 // NOTE: if this is not the end of the statement, fall back to the target
10187 // agnostic handling for this directive which will correctly handle this.
10188 if (parseOptionalToken(AsmToken::EndOfStatement)) {
10189 // '.align' is target specifically handled to mean 2**2 byte alignment.
10190 const MCSection *Section = getStreamer().getCurrentSectionOnly();
10191 assert(Section && "must have section to emit alignment");
10192 if (Section->UseCodeAlign())
10193 getStreamer().EmitCodeAlignment(4, 0);
10195 getStreamer().EmitValueToAlignment(4, 0, 1, 0);
10201 /// parseDirectiveThumbSet
10202 /// ::= .thumb_set name, value
10203 bool ARMAsmParser::parseDirectiveThumbSet(SMLoc L) {
10204 MCAsmParser &Parser = getParser();
10207 if (check(Parser.parseIdentifier(Name),
10208 "expected identifier after '.thumb_set'") ||
10209 parseToken(AsmToken::Comma, "expected comma after name '" + Name + "'"))
10213 const MCExpr *Value;
10214 if (MCParserUtils::parseAssignmentExpression(Name, /* allow_redef */ true,
10215 Parser, Sym, Value))
10218 getTargetStreamer().emitThumbSet(Sym, Value);
10222 /// Force static initialization.
10223 extern "C" void LLVMInitializeARMAsmParser() {
10224 RegisterMCAsmParser<ARMAsmParser> X(getTheARMLETarget());
10225 RegisterMCAsmParser<ARMAsmParser> Y(getTheARMBETarget());
10226 RegisterMCAsmParser<ARMAsmParser> A(getTheThumbLETarget());
10227 RegisterMCAsmParser<ARMAsmParser> B(getTheThumbBETarget());
10230 #define GET_REGISTER_MATCHER
10231 #define GET_SUBTARGET_FEATURE_NAME
10232 #define GET_MATCHER_IMPLEMENTATION
10233 #include "ARMGenAsmMatcher.inc"
10235 // FIXME: This structure should be moved inside ARMTargetParser
10236 // when we start to table-generate them, and we can use the ARM
10237 // flags below, that were generated by table-gen.
10238 static const struct {
10239 const unsigned Kind;
10240 const uint64_t ArchCheck;
10241 const FeatureBitset Features;
10243 { ARM::AEK_CRC, Feature_HasV8, {ARM::FeatureCRC} },
10244 { ARM::AEK_CRYPTO, Feature_HasV8,
10245 {ARM::FeatureCrypto, ARM::FeatureNEON, ARM::FeatureFPARMv8} },
10246 { ARM::AEK_FP, Feature_HasV8, {ARM::FeatureFPARMv8} },
10247 { (ARM::AEK_HWDIV | ARM::AEK_HWDIVARM), Feature_HasV7 | Feature_IsNotMClass,
10248 {ARM::FeatureHWDiv, ARM::FeatureHWDivARM} },
10249 { ARM::AEK_MP, Feature_HasV7 | Feature_IsNotMClass, {ARM::FeatureMP} },
10250 { ARM::AEK_SIMD, Feature_HasV8, {ARM::FeatureNEON, ARM::FeatureFPARMv8} },
10251 { ARM::AEK_SEC, Feature_HasV6K, {ARM::FeatureTrustZone} },
10252 // FIXME: Only available in A-class, isel not predicated
10253 { ARM::AEK_VIRT, Feature_HasV7, {ARM::FeatureVirtualization} },
10254 { ARM::AEK_FP16, Feature_HasV8_2a, {ARM::FeatureFPARMv8, ARM::FeatureFullFP16} },
10255 { ARM::AEK_RAS, Feature_HasV8, {ARM::FeatureRAS} },
10256 // FIXME: Unsupported extensions.
10257 { ARM::AEK_OS, Feature_None, {} },
10258 { ARM::AEK_IWMMXT, Feature_None, {} },
10259 { ARM::AEK_IWMMXT2, Feature_None, {} },
10260 { ARM::AEK_MAVERICK, Feature_None, {} },
10261 { ARM::AEK_XSCALE, Feature_None, {} },
10264 /// parseDirectiveArchExtension
10265 /// ::= .arch_extension [no]feature
10266 bool ARMAsmParser::parseDirectiveArchExtension(SMLoc L) {
10267 MCAsmParser &Parser = getParser();
10269 if (getLexer().isNot(AsmToken::Identifier))
10270 return Error(getLexer().getLoc(), "expected architecture extension name");
10272 StringRef Name = Parser.getTok().getString();
10273 SMLoc ExtLoc = Parser.getTok().getLoc();
10276 if (parseToken(AsmToken::EndOfStatement,
10277 "unexpected token in '.arch_extension' directive"))
10280 bool EnableFeature = true;
10281 if (Name.startswith_lower("no")) {
10282 EnableFeature = false;
10283 Name = Name.substr(2);
10285 unsigned FeatureKind = ARM::parseArchExt(Name);
10286 if (FeatureKind == ARM::AEK_INVALID)
10287 return Error(ExtLoc, "unknown architectural extension: " + Name);
10289 for (const auto &Extension : Extensions) {
10290 if (Extension.Kind != FeatureKind)
10293 if (Extension.Features.none())
10294 return Error(ExtLoc, "unsupported architectural extension: " + Name);
10296 if ((getAvailableFeatures() & Extension.ArchCheck) != Extension.ArchCheck)
10297 return Error(ExtLoc, "architectural extension '" + Name +
10299 "allowed for the current base architecture");
10301 MCSubtargetInfo &STI = copySTI();
10302 FeatureBitset ToggleFeatures = EnableFeature
10303 ? (~STI.getFeatureBits() & Extension.Features)
10304 : ( STI.getFeatureBits() & Extension.Features);
10306 uint64_t Features =
10307 ComputeAvailableFeatures(STI.ToggleFeature(ToggleFeatures));
10308 setAvailableFeatures(Features);
10312 return Error(ExtLoc, "unknown architectural extension: " + Name);
10315 // Define this matcher function after the auto-generated include so we
10316 // have the match class enum definitions.
10317 unsigned ARMAsmParser::validateTargetOperandClass(MCParsedAsmOperand &AsmOp,
10319 ARMOperand &Op = static_cast<ARMOperand &>(AsmOp);
10320 // If the kind is a token for a literal immediate, check if our asm
10321 // operand matches. This is for InstAliases which have a fixed-value
10322 // immediate in the syntax.
10327 if (const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(Op.getImm()))
10328 if (CE->getValue() == 0)
10329 return Match_Success;
10333 const MCExpr *SOExpr = Op.getImm();
10335 if (!SOExpr->evaluateAsAbsolute(Value))
10336 return Match_Success;
10337 assert((Value >= INT32_MIN && Value <= UINT32_MAX) &&
10338 "expression value must be representable in 32 bits");
10342 if (hasV8Ops() && Op.isReg() && Op.getReg() == ARM::SP)
10343 return Match_Success;
10347 MRI->getRegClass(ARM::GPRRegClassID).contains(Op.getReg()))
10348 return Match_Success;
10351 return Match_InvalidOperand;