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 "ARMFPUName.h"
11 #include "ARMFeatures.h"
12 #include "MCTargetDesc/ARMAddressingModes.h"
13 #include "MCTargetDesc/ARMArchName.h"
14 #include "MCTargetDesc/ARMBaseInfo.h"
15 #include "MCTargetDesc/ARMMCExpr.h"
16 #include "llvm/ADT/STLExtras.h"
17 #include "llvm/ADT/SmallVector.h"
18 #include "llvm/ADT/StringExtras.h"
19 #include "llvm/ADT/StringSwitch.h"
20 #include "llvm/ADT/Twine.h"
21 #include "llvm/MC/MCAsmInfo.h"
22 #include "llvm/MC/MCAssembler.h"
23 #include "llvm/MC/MCContext.h"
24 #include "llvm/MC/MCDisassembler.h"
25 #include "llvm/MC/MCELFStreamer.h"
26 #include "llvm/MC/MCExpr.h"
27 #include "llvm/MC/MCInst.h"
28 #include "llvm/MC/MCInstrDesc.h"
29 #include "llvm/MC/MCInstrInfo.h"
30 #include "llvm/MC/MCObjectFileInfo.h"
31 #include "llvm/MC/MCParser/MCAsmLexer.h"
32 #include "llvm/MC/MCParser/MCAsmParser.h"
33 #include "llvm/MC/MCParser/MCParsedAsmOperand.h"
34 #include "llvm/MC/MCRegisterInfo.h"
35 #include "llvm/MC/MCSection.h"
36 #include "llvm/MC/MCStreamer.h"
37 #include "llvm/MC/MCSubtargetInfo.h"
38 #include "llvm/MC/MCSymbol.h"
39 #include "llvm/MC/MCTargetAsmParser.h"
40 #include "llvm/Support/ARMBuildAttributes.h"
41 #include "llvm/Support/ARMEHABI.h"
42 #include "llvm/Support/COFF.h"
43 #include "llvm/Support/Debug.h"
44 #include "llvm/Support/ELF.h"
45 #include "llvm/Support/MathExtras.h"
46 #include "llvm/Support/SourceMgr.h"
47 #include "llvm/Support/TargetRegistry.h"
48 #include "llvm/Support/raw_ostream.h"
56 enum VectorLaneTy { NoLanes, AllLanes, IndexedLane };
61 typedef SmallVector<SMLoc, 4> Locs;
66 Locs PersonalityIndexLocs;
71 UnwindContext(MCAsmParser &P) : Parser(P), FPReg(ARM::SP) {}
73 bool hasFnStart() const { return !FnStartLocs.empty(); }
74 bool cantUnwind() const { return !CantUnwindLocs.empty(); }
75 bool hasHandlerData() const { return !HandlerDataLocs.empty(); }
76 bool hasPersonality() const {
77 return !(PersonalityLocs.empty() && PersonalityIndexLocs.empty());
80 void recordFnStart(SMLoc L) { FnStartLocs.push_back(L); }
81 void recordCantUnwind(SMLoc L) { CantUnwindLocs.push_back(L); }
82 void recordPersonality(SMLoc L) { PersonalityLocs.push_back(L); }
83 void recordHandlerData(SMLoc L) { HandlerDataLocs.push_back(L); }
84 void recordPersonalityIndex(SMLoc L) { PersonalityIndexLocs.push_back(L); }
86 void saveFPReg(int Reg) { FPReg = Reg; }
87 int getFPReg() const { return FPReg; }
89 void emitFnStartLocNotes() const {
90 for (Locs::const_iterator FI = FnStartLocs.begin(), FE = FnStartLocs.end();
92 Parser.Note(*FI, ".fnstart was specified here");
94 void emitCantUnwindLocNotes() const {
95 for (Locs::const_iterator UI = CantUnwindLocs.begin(),
96 UE = CantUnwindLocs.end(); UI != UE; ++UI)
97 Parser.Note(*UI, ".cantunwind was specified here");
99 void emitHandlerDataLocNotes() const {
100 for (Locs::const_iterator HI = HandlerDataLocs.begin(),
101 HE = HandlerDataLocs.end(); HI != HE; ++HI)
102 Parser.Note(*HI, ".handlerdata was specified here");
104 void emitPersonalityLocNotes() const {
105 for (Locs::const_iterator PI = PersonalityLocs.begin(),
106 PE = PersonalityLocs.end(),
107 PII = PersonalityIndexLocs.begin(),
108 PIE = PersonalityIndexLocs.end();
109 PI != PE || PII != PIE;) {
110 if (PI != PE && (PII == PIE || PI->getPointer() < PII->getPointer()))
111 Parser.Note(*PI++, ".personality was specified here");
112 else if (PII != PIE && (PI == PE || PII->getPointer() < PI->getPointer()))
113 Parser.Note(*PII++, ".personalityindex was specified here");
115 llvm_unreachable(".personality and .personalityindex cannot be "
116 "at the same location");
121 FnStartLocs = Locs();
122 CantUnwindLocs = Locs();
123 PersonalityLocs = Locs();
124 HandlerDataLocs = Locs();
125 PersonalityIndexLocs = Locs();
130 class ARMAsmParser : public MCTargetAsmParser {
131 MCSubtargetInfo &STI;
133 const MCInstrInfo &MII;
134 const MCRegisterInfo *MRI;
137 ARMTargetStreamer &getTargetStreamer() {
138 MCTargetStreamer &TS = *getParser().getStreamer().getTargetStreamer();
139 return static_cast<ARMTargetStreamer &>(TS);
142 // Map of register aliases registers via the .req directive.
143 StringMap<unsigned> RegisterReqs;
145 bool NextSymbolIsThumb;
148 ARMCC::CondCodes Cond; // Condition for IT block.
149 unsigned Mask:4; // Condition mask for instructions.
150 // Starting at first 1 (from lsb).
151 // '1' condition as indicated in IT.
152 // '0' inverse of condition (else).
153 // Count of instructions in IT block is
154 // 4 - trailingzeroes(mask)
156 bool FirstCond; // Explicit flag for when we're parsing the
157 // First instruction in the IT block. It's
158 // implied in the mask, so needs special
161 unsigned CurPosition; // Current position in parsing of IT
162 // block. In range [0,3]. Initialized
163 // according to count of instructions in block.
164 // ~0U if no active IT block.
166 bool inITBlock() { return ITState.CurPosition != ~0U;}
167 void forwardITPosition() {
168 if (!inITBlock()) return;
169 // Move to the next instruction in the IT block, if there is one. If not,
170 // mark the block as done.
171 unsigned TZ = countTrailingZeros(ITState.Mask);
172 if (++ITState.CurPosition == 5 - TZ)
173 ITState.CurPosition = ~0U; // Done with the IT block after this.
177 MCAsmParser &getParser() const { return Parser; }
178 MCAsmLexer &getLexer() const { return Parser.getLexer(); }
180 void Note(SMLoc L, const Twine &Msg, ArrayRef<SMRange> Ranges = None) {
181 return Parser.Note(L, Msg, Ranges);
183 bool Warning(SMLoc L, const Twine &Msg,
184 ArrayRef<SMRange> Ranges = None) {
185 return Parser.Warning(L, Msg, Ranges);
187 bool Error(SMLoc L, const Twine &Msg,
188 ArrayRef<SMRange> Ranges = None) {
189 return Parser.Error(L, Msg, Ranges);
192 int tryParseRegister();
193 bool tryParseRegisterWithWriteBack(OperandVector &);
194 int tryParseShiftRegister(OperandVector &);
195 bool parseRegisterList(OperandVector &);
196 bool parseMemory(OperandVector &);
197 bool parseOperand(OperandVector &, StringRef Mnemonic);
198 bool parsePrefix(ARMMCExpr::VariantKind &RefKind);
199 bool parseMemRegOffsetShift(ARM_AM::ShiftOpc &ShiftType,
200 unsigned &ShiftAmount);
201 bool parseLiteralValues(unsigned Size, SMLoc L);
202 bool parseDirectiveThumb(SMLoc L);
203 bool parseDirectiveARM(SMLoc L);
204 bool parseDirectiveThumbFunc(SMLoc L);
205 bool parseDirectiveCode(SMLoc L);
206 bool parseDirectiveSyntax(SMLoc L);
207 bool parseDirectiveReq(StringRef Name, SMLoc L);
208 bool parseDirectiveUnreq(SMLoc L);
209 bool parseDirectiveArch(SMLoc L);
210 bool parseDirectiveEabiAttr(SMLoc L);
211 bool parseDirectiveCPU(SMLoc L);
212 bool parseDirectiveFPU(SMLoc L);
213 bool parseDirectiveFnStart(SMLoc L);
214 bool parseDirectiveFnEnd(SMLoc L);
215 bool parseDirectiveCantUnwind(SMLoc L);
216 bool parseDirectivePersonality(SMLoc L);
217 bool parseDirectiveHandlerData(SMLoc L);
218 bool parseDirectiveSetFP(SMLoc L);
219 bool parseDirectivePad(SMLoc L);
220 bool parseDirectiveRegSave(SMLoc L, bool IsVector);
221 bool parseDirectiveInst(SMLoc L, char Suffix = '\0');
222 bool parseDirectiveLtorg(SMLoc L);
223 bool parseDirectiveEven(SMLoc L);
224 bool parseDirectivePersonalityIndex(SMLoc L);
225 bool parseDirectiveUnwindRaw(SMLoc L);
226 bool parseDirectiveTLSDescSeq(SMLoc L);
227 bool parseDirectiveMovSP(SMLoc L);
228 bool parseDirectiveObjectArch(SMLoc L);
229 bool parseDirectiveArchExtension(SMLoc L);
230 bool parseDirectiveAlign(SMLoc L);
231 bool parseDirectiveThumbSet(SMLoc L);
233 StringRef splitMnemonic(StringRef Mnemonic, unsigned &PredicationCode,
234 bool &CarrySetting, unsigned &ProcessorIMod,
236 void getMnemonicAcceptInfo(StringRef Mnemonic, StringRef FullInst,
237 bool &CanAcceptCarrySet,
238 bool &CanAcceptPredicationCode);
240 bool isThumb() const {
241 // FIXME: Can tablegen auto-generate this?
242 return (STI.getFeatureBits() & ARM::ModeThumb) != 0;
244 bool isThumbOne() const {
245 return isThumb() && (STI.getFeatureBits() & ARM::FeatureThumb2) == 0;
247 bool isThumbTwo() const {
248 return isThumb() && (STI.getFeatureBits() & ARM::FeatureThumb2);
250 bool hasThumb() const {
251 return STI.getFeatureBits() & ARM::HasV4TOps;
253 bool hasV6Ops() const {
254 return STI.getFeatureBits() & ARM::HasV6Ops;
256 bool hasV6MOps() const {
257 return STI.getFeatureBits() & ARM::HasV6MOps;
259 bool hasV7Ops() const {
260 return STI.getFeatureBits() & ARM::HasV7Ops;
262 bool hasV8Ops() const {
263 return STI.getFeatureBits() & ARM::HasV8Ops;
265 bool hasARM() const {
266 return !(STI.getFeatureBits() & ARM::FeatureNoARM);
270 unsigned FB = ComputeAvailableFeatures(STI.ToggleFeature(ARM::ModeThumb));
271 setAvailableFeatures(FB);
273 bool isMClass() const {
274 return STI.getFeatureBits() & ARM::FeatureMClass;
277 /// @name Auto-generated Match Functions
280 #define GET_ASSEMBLER_HEADER
281 #include "ARMGenAsmMatcher.inc"
285 OperandMatchResultTy parseITCondCode(OperandVector &);
286 OperandMatchResultTy parseCoprocNumOperand(OperandVector &);
287 OperandMatchResultTy parseCoprocRegOperand(OperandVector &);
288 OperandMatchResultTy parseCoprocOptionOperand(OperandVector &);
289 OperandMatchResultTy parseMemBarrierOptOperand(OperandVector &);
290 OperandMatchResultTy parseInstSyncBarrierOptOperand(OperandVector &);
291 OperandMatchResultTy parseProcIFlagsOperand(OperandVector &);
292 OperandMatchResultTy parseMSRMaskOperand(OperandVector &);
293 OperandMatchResultTy parsePKHImm(OperandVector &O, StringRef Op, int Low,
295 OperandMatchResultTy parsePKHLSLImm(OperandVector &O) {
296 return parsePKHImm(O, "lsl", 0, 31);
298 OperandMatchResultTy parsePKHASRImm(OperandVector &O) {
299 return parsePKHImm(O, "asr", 1, 32);
301 OperandMatchResultTy parseSetEndImm(OperandVector &);
302 OperandMatchResultTy parseShifterImm(OperandVector &);
303 OperandMatchResultTy parseRotImm(OperandVector &);
304 OperandMatchResultTy parseBitfield(OperandVector &);
305 OperandMatchResultTy parsePostIdxReg(OperandVector &);
306 OperandMatchResultTy parseAM3Offset(OperandVector &);
307 OperandMatchResultTy parseFPImm(OperandVector &);
308 OperandMatchResultTy parseVectorList(OperandVector &);
309 OperandMatchResultTy parseVectorLane(VectorLaneTy &LaneKind, unsigned &Index,
312 // Asm Match Converter Methods
313 void cvtThumbMultiply(MCInst &Inst, const OperandVector &);
314 void cvtThumbBranches(MCInst &Inst, const OperandVector &);
316 bool validateInstruction(MCInst &Inst, const OperandVector &Ops);
317 bool processInstruction(MCInst &Inst, const OperandVector &Ops, MCStreamer &Out);
318 bool shouldOmitCCOutOperand(StringRef Mnemonic, OperandVector &Operands);
319 bool shouldOmitPredicateOperand(StringRef Mnemonic, OperandVector &Operands);
322 enum ARMMatchResultTy {
323 Match_RequiresITBlock = FIRST_TARGET_MATCH_RESULT_TY,
324 Match_RequiresNotITBlock,
326 Match_RequiresThumb2,
327 #define GET_OPERAND_DIAGNOSTIC_TYPES
328 #include "ARMGenAsmMatcher.inc"
332 ARMAsmParser(MCSubtargetInfo &_STI, MCAsmParser &_Parser,
333 const MCInstrInfo &MII,
334 const MCTargetOptions &Options)
335 : MCTargetAsmParser(), STI(_STI), Parser(_Parser), MII(MII), UC(_Parser) {
336 MCAsmParserExtension::Initialize(_Parser);
338 // Cache the MCRegisterInfo.
339 MRI = getContext().getRegisterInfo();
341 // Initialize the set of available features.
342 setAvailableFeatures(ComputeAvailableFeatures(STI.getFeatureBits()));
344 // Not in an ITBlock to start with.
345 ITState.CurPosition = ~0U;
347 NextSymbolIsThumb = false;
350 // Implementation of the MCTargetAsmParser interface:
351 bool ParseRegister(unsigned &RegNo, SMLoc &StartLoc, SMLoc &EndLoc) override;
352 bool ParseInstruction(ParseInstructionInfo &Info, StringRef Name,
353 SMLoc NameLoc, OperandVector &Operands) override;
354 bool ParseDirective(AsmToken DirectiveID) override;
356 unsigned validateTargetOperandClass(MCParsedAsmOperand &Op,
357 unsigned Kind) override;
358 unsigned checkTargetMatchPredicate(MCInst &Inst) override;
360 bool MatchAndEmitInstruction(SMLoc IDLoc, unsigned &Opcode,
361 OperandVector &Operands, MCStreamer &Out,
363 bool MatchingInlineAsm) override;
364 void onLabelParsed(MCSymbol *Symbol) override;
366 } // end anonymous namespace
370 /// ARMOperand - Instances of this class represent a parsed ARM machine
372 class ARMOperand : public MCParsedAsmOperand {
382 k_InstSyncBarrierOpt,
393 k_VectorListAllLanes,
399 k_BitfieldDescriptor,
403 SMLoc StartLoc, EndLoc, AlignmentLoc;
404 SmallVector<unsigned, 8> Registers;
407 ARMCC::CondCodes Val;
414 struct CoprocOptionOp {
427 ARM_ISB::InstSyncBOpt Val;
431 ARM_PROC::IFlags Val;
447 // A vector register list is a sequential list of 1 to 4 registers.
448 struct VectorListOp {
455 struct VectorIndexOp {
463 /// Combined record for all forms of ARM address expressions.
466 // Offset is in OffsetReg or OffsetImm. If both are zero, no offset
468 const MCConstantExpr *OffsetImm; // Offset immediate value
469 unsigned OffsetRegNum; // Offset register num, when OffsetImm == NULL
470 ARM_AM::ShiftOpc ShiftType; // Shift type for OffsetReg
471 unsigned ShiftImm; // shift for OffsetReg.
472 unsigned Alignment; // 0 = no alignment specified
473 // n = alignment in bytes (2, 4, 8, 16, or 32)
474 unsigned isNegative : 1; // Negated OffsetReg? (~'U' bit)
477 struct PostIdxRegOp {
480 ARM_AM::ShiftOpc ShiftTy;
484 struct ShifterImmOp {
489 struct RegShiftedRegOp {
490 ARM_AM::ShiftOpc ShiftTy;
496 struct RegShiftedImmOp {
497 ARM_AM::ShiftOpc ShiftTy;
514 struct CoprocOptionOp CoprocOption;
515 struct MBOptOp MBOpt;
516 struct ISBOptOp ISBOpt;
517 struct ITMaskOp ITMask;
518 struct IFlagsOp IFlags;
519 struct MMaskOp MMask;
522 struct VectorListOp VectorList;
523 struct VectorIndexOp VectorIndex;
525 struct MemoryOp Memory;
526 struct PostIdxRegOp PostIdxReg;
527 struct ShifterImmOp ShifterImm;
528 struct RegShiftedRegOp RegShiftedReg;
529 struct RegShiftedImmOp RegShiftedImm;
530 struct RotImmOp RotImm;
531 struct BitfieldOp Bitfield;
535 ARMOperand(KindTy K) : MCParsedAsmOperand(), Kind(K) {}
536 ARMOperand(const ARMOperand &o) : MCParsedAsmOperand() {
538 StartLoc = o.StartLoc;
555 case k_DPRRegisterList:
556 case k_SPRRegisterList:
557 Registers = o.Registers;
560 case k_VectorListAllLanes:
561 case k_VectorListIndexed:
562 VectorList = o.VectorList;
569 CoprocOption = o.CoprocOption;
574 case k_MemBarrierOpt:
577 case k_InstSyncBarrierOpt:
582 case k_PostIndexRegister:
583 PostIdxReg = o.PostIdxReg;
591 case k_ShifterImmediate:
592 ShifterImm = o.ShifterImm;
594 case k_ShiftedRegister:
595 RegShiftedReg = o.RegShiftedReg;
597 case k_ShiftedImmediate:
598 RegShiftedImm = o.RegShiftedImm;
600 case k_RotateImmediate:
603 case k_BitfieldDescriptor:
604 Bitfield = o.Bitfield;
607 VectorIndex = o.VectorIndex;
612 /// getStartLoc - Get the location of the first token of this operand.
613 SMLoc getStartLoc() const override { return StartLoc; }
614 /// getEndLoc - Get the location of the last token of this operand.
615 SMLoc getEndLoc() const override { return EndLoc; }
616 /// getLocRange - Get the range between the first and last token of this
618 SMRange getLocRange() const { return SMRange(StartLoc, EndLoc); }
620 /// getAlignmentLoc - Get the location of the Alignment token of this operand.
621 SMLoc getAlignmentLoc() const {
622 assert(Kind == k_Memory && "Invalid access!");
626 ARMCC::CondCodes getCondCode() const {
627 assert(Kind == k_CondCode && "Invalid access!");
631 unsigned getCoproc() const {
632 assert((Kind == k_CoprocNum || Kind == k_CoprocReg) && "Invalid access!");
636 StringRef getToken() const {
637 assert(Kind == k_Token && "Invalid access!");
638 return StringRef(Tok.Data, Tok.Length);
641 unsigned getReg() const override {
642 assert((Kind == k_Register || Kind == k_CCOut) && "Invalid access!");
646 const SmallVectorImpl<unsigned> &getRegList() const {
647 assert((Kind == k_RegisterList || Kind == k_DPRRegisterList ||
648 Kind == k_SPRRegisterList) && "Invalid access!");
652 const MCExpr *getImm() const {
653 assert(isImm() && "Invalid access!");
657 unsigned getVectorIndex() const {
658 assert(Kind == k_VectorIndex && "Invalid access!");
659 return VectorIndex.Val;
662 ARM_MB::MemBOpt getMemBarrierOpt() const {
663 assert(Kind == k_MemBarrierOpt && "Invalid access!");
667 ARM_ISB::InstSyncBOpt getInstSyncBarrierOpt() const {
668 assert(Kind == k_InstSyncBarrierOpt && "Invalid access!");
672 ARM_PROC::IFlags getProcIFlags() const {
673 assert(Kind == k_ProcIFlags && "Invalid access!");
677 unsigned getMSRMask() const {
678 assert(Kind == k_MSRMask && "Invalid access!");
682 bool isCoprocNum() const { return Kind == k_CoprocNum; }
683 bool isCoprocReg() const { return Kind == k_CoprocReg; }
684 bool isCoprocOption() const { return Kind == k_CoprocOption; }
685 bool isCondCode() const { return Kind == k_CondCode; }
686 bool isCCOut() const { return Kind == k_CCOut; }
687 bool isITMask() const { return Kind == k_ITCondMask; }
688 bool isITCondCode() const { return Kind == k_CondCode; }
689 bool isImm() const override { return Kind == k_Immediate; }
690 // checks whether this operand is an unsigned offset which fits is a field
691 // of specified width and scaled by a specific number of bits
692 template<unsigned width, unsigned scale>
693 bool isUnsignedOffset() const {
694 if (!isImm()) return false;
695 if (isa<MCSymbolRefExpr>(Imm.Val)) return true;
696 if (const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(Imm.Val)) {
697 int64_t Val = CE->getValue();
698 int64_t Align = 1LL << scale;
699 int64_t Max = Align * ((1LL << width) - 1);
700 return ((Val % Align) == 0) && (Val >= 0) && (Val <= Max);
704 // checks whether this operand is an signed offset which fits is a field
705 // of specified width and scaled by a specific number of bits
706 template<unsigned width, unsigned scale>
707 bool isSignedOffset() const {
708 if (!isImm()) return false;
709 if (isa<MCSymbolRefExpr>(Imm.Val)) return true;
710 if (const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(Imm.Val)) {
711 int64_t Val = CE->getValue();
712 int64_t Align = 1LL << scale;
713 int64_t Max = Align * ((1LL << (width-1)) - 1);
714 int64_t Min = -Align * (1LL << (width-1));
715 return ((Val % Align) == 0) && (Val >= Min) && (Val <= Max);
720 // checks whether this operand is a memory operand computed as an offset
721 // applied to PC. the offset may have 8 bits of magnitude and is represented
722 // with two bits of shift. textually it may be either [pc, #imm], #imm or
723 // relocable expression...
724 bool isThumbMemPC() const {
727 if (isa<MCSymbolRefExpr>(Imm.Val)) return true;
728 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(Imm.Val);
729 if (!CE) return false;
730 Val = CE->getValue();
733 if(!Memory.OffsetImm || Memory.OffsetRegNum) return false;
734 if(Memory.BaseRegNum != ARM::PC) return false;
735 Val = Memory.OffsetImm->getValue();
738 return ((Val % 4) == 0) && (Val >= 0) && (Val <= 1020);
740 bool isFPImm() const {
741 if (!isImm()) return false;
742 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
743 if (!CE) return false;
744 int Val = ARM_AM::getFP32Imm(APInt(32, CE->getValue()));
747 bool isFBits16() const {
748 if (!isImm()) return false;
749 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
750 if (!CE) return false;
751 int64_t Value = CE->getValue();
752 return Value >= 0 && Value <= 16;
754 bool isFBits32() const {
755 if (!isImm()) return false;
756 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
757 if (!CE) return false;
758 int64_t Value = CE->getValue();
759 return Value >= 1 && Value <= 32;
761 bool isImm8s4() const {
762 if (!isImm()) return false;
763 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
764 if (!CE) return false;
765 int64_t Value = CE->getValue();
766 return ((Value & 3) == 0) && Value >= -1020 && Value <= 1020;
768 bool isImm0_1020s4() const {
769 if (!isImm()) return false;
770 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
771 if (!CE) return false;
772 int64_t Value = CE->getValue();
773 return ((Value & 3) == 0) && Value >= 0 && Value <= 1020;
775 bool isImm0_508s4() const {
776 if (!isImm()) return false;
777 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
778 if (!CE) return false;
779 int64_t Value = CE->getValue();
780 return ((Value & 3) == 0) && Value >= 0 && Value <= 508;
782 bool isImm0_508s4Neg() const {
783 if (!isImm()) return false;
784 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
785 if (!CE) return false;
786 int64_t Value = -CE->getValue();
787 // explicitly exclude zero. we want that to use the normal 0_508 version.
788 return ((Value & 3) == 0) && Value > 0 && Value <= 508;
790 bool isImm0_239() const {
791 if (!isImm()) return false;
792 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
793 if (!CE) return false;
794 int64_t Value = CE->getValue();
795 return Value >= 0 && Value < 240;
797 bool isImm0_255() const {
798 if (!isImm()) return false;
799 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
800 if (!CE) return false;
801 int64_t Value = CE->getValue();
802 return Value >= 0 && Value < 256;
804 bool isImm0_4095() const {
805 if (!isImm()) return false;
806 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
807 if (!CE) return false;
808 int64_t Value = CE->getValue();
809 return Value >= 0 && Value < 4096;
811 bool isImm0_4095Neg() const {
812 if (!isImm()) return false;
813 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
814 if (!CE) return false;
815 int64_t Value = -CE->getValue();
816 return Value > 0 && Value < 4096;
818 bool isImm0_1() const {
819 if (!isImm()) return false;
820 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
821 if (!CE) return false;
822 int64_t Value = CE->getValue();
823 return Value >= 0 && Value < 2;
825 bool isImm0_3() const {
826 if (!isImm()) return false;
827 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
828 if (!CE) return false;
829 int64_t Value = CE->getValue();
830 return Value >= 0 && Value < 4;
832 bool isImm0_7() const {
833 if (!isImm()) return false;
834 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
835 if (!CE) return false;
836 int64_t Value = CE->getValue();
837 return Value >= 0 && Value < 8;
839 bool isImm0_15() const {
840 if (!isImm()) return false;
841 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
842 if (!CE) return false;
843 int64_t Value = CE->getValue();
844 return Value >= 0 && Value < 16;
846 bool isImm0_31() const {
847 if (!isImm()) return false;
848 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
849 if (!CE) return false;
850 int64_t Value = CE->getValue();
851 return Value >= 0 && Value < 32;
853 bool isImm0_63() const {
854 if (!isImm()) return false;
855 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
856 if (!CE) return false;
857 int64_t Value = CE->getValue();
858 return Value >= 0 && Value < 64;
860 bool isImm8() const {
861 if (!isImm()) return false;
862 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
863 if (!CE) return false;
864 int64_t Value = CE->getValue();
867 bool isImm16() const {
868 if (!isImm()) return false;
869 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
870 if (!CE) return false;
871 int64_t Value = CE->getValue();
874 bool isImm32() const {
875 if (!isImm()) return false;
876 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
877 if (!CE) return false;
878 int64_t Value = CE->getValue();
881 bool isShrImm8() const {
882 if (!isImm()) return false;
883 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
884 if (!CE) return false;
885 int64_t Value = CE->getValue();
886 return Value > 0 && Value <= 8;
888 bool isShrImm16() const {
889 if (!isImm()) return false;
890 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
891 if (!CE) return false;
892 int64_t Value = CE->getValue();
893 return Value > 0 && Value <= 16;
895 bool isShrImm32() const {
896 if (!isImm()) return false;
897 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
898 if (!CE) return false;
899 int64_t Value = CE->getValue();
900 return Value > 0 && Value <= 32;
902 bool isShrImm64() const {
903 if (!isImm()) return false;
904 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
905 if (!CE) return false;
906 int64_t Value = CE->getValue();
907 return Value > 0 && Value <= 64;
909 bool isImm1_7() const {
910 if (!isImm()) return false;
911 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
912 if (!CE) return false;
913 int64_t Value = CE->getValue();
914 return Value > 0 && Value < 8;
916 bool isImm1_15() const {
917 if (!isImm()) return false;
918 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
919 if (!CE) return false;
920 int64_t Value = CE->getValue();
921 return Value > 0 && Value < 16;
923 bool isImm1_31() const {
924 if (!isImm()) return false;
925 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
926 if (!CE) return false;
927 int64_t Value = CE->getValue();
928 return Value > 0 && Value < 32;
930 bool isImm1_16() const {
931 if (!isImm()) return false;
932 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
933 if (!CE) return false;
934 int64_t Value = CE->getValue();
935 return Value > 0 && Value < 17;
937 bool isImm1_32() const {
938 if (!isImm()) return false;
939 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
940 if (!CE) return false;
941 int64_t Value = CE->getValue();
942 return Value > 0 && Value < 33;
944 bool isImm0_32() const {
945 if (!isImm()) return false;
946 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
947 if (!CE) return false;
948 int64_t Value = CE->getValue();
949 return Value >= 0 && Value < 33;
951 bool isImm0_65535() const {
952 if (!isImm()) return false;
953 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
954 if (!CE) return false;
955 int64_t Value = CE->getValue();
956 return Value >= 0 && Value < 65536;
958 bool isImm256_65535Expr() const {
959 if (!isImm()) return false;
960 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
961 // If it's not a constant expression, it'll generate a fixup and be
963 if (!CE) return true;
964 int64_t Value = CE->getValue();
965 return Value >= 256 && Value < 65536;
967 bool isImm0_65535Expr() const {
968 if (!isImm()) return false;
969 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
970 // If it's not a constant expression, it'll generate a fixup and be
972 if (!CE) return true;
973 int64_t Value = CE->getValue();
974 return Value >= 0 && Value < 65536;
976 bool isImm24bit() const {
977 if (!isImm()) return false;
978 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
979 if (!CE) return false;
980 int64_t Value = CE->getValue();
981 return Value >= 0 && Value <= 0xffffff;
983 bool isImmThumbSR() const {
984 if (!isImm()) return false;
985 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
986 if (!CE) return false;
987 int64_t Value = CE->getValue();
988 return Value > 0 && Value < 33;
990 bool isPKHLSLImm() const {
991 if (!isImm()) return false;
992 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
993 if (!CE) return false;
994 int64_t Value = CE->getValue();
995 return Value >= 0 && Value < 32;
997 bool isPKHASRImm() const {
998 if (!isImm()) return false;
999 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
1000 if (!CE) return false;
1001 int64_t Value = CE->getValue();
1002 return Value > 0 && Value <= 32;
1004 bool isAdrLabel() const {
1005 // If we have an immediate that's not a constant, treat it as a label
1006 // reference needing a fixup. If it is a constant, but it can't fit
1007 // into shift immediate encoding, we reject it.
1008 if (isImm() && !isa<MCConstantExpr>(getImm())) return true;
1009 else return (isARMSOImm() || isARMSOImmNeg());
1011 bool isARMSOImm() const {
1012 if (!isImm()) return false;
1013 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
1014 if (!CE) return false;
1015 int64_t Value = CE->getValue();
1016 return ARM_AM::getSOImmVal(Value) != -1;
1018 bool isARMSOImmNot() const {
1019 if (!isImm()) return false;
1020 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
1021 if (!CE) return false;
1022 int64_t Value = CE->getValue();
1023 return ARM_AM::getSOImmVal(~Value) != -1;
1025 bool isARMSOImmNeg() const {
1026 if (!isImm()) return false;
1027 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
1028 if (!CE) return false;
1029 int64_t Value = CE->getValue();
1030 // Only use this when not representable as a plain so_imm.
1031 return ARM_AM::getSOImmVal(Value) == -1 &&
1032 ARM_AM::getSOImmVal(-Value) != -1;
1034 bool isT2SOImm() const {
1035 if (!isImm()) return false;
1036 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
1037 if (!CE) return false;
1038 int64_t Value = CE->getValue();
1039 return ARM_AM::getT2SOImmVal(Value) != -1;
1041 bool isT2SOImmNot() const {
1042 if (!isImm()) return false;
1043 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
1044 if (!CE) return false;
1045 int64_t Value = CE->getValue();
1046 return ARM_AM::getT2SOImmVal(Value) == -1 &&
1047 ARM_AM::getT2SOImmVal(~Value) != -1;
1049 bool isT2SOImmNeg() const {
1050 if (!isImm()) return false;
1051 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
1052 if (!CE) return false;
1053 int64_t Value = CE->getValue();
1054 // Only use this when not representable as a plain so_imm.
1055 return ARM_AM::getT2SOImmVal(Value) == -1 &&
1056 ARM_AM::getT2SOImmVal(-Value) != -1;
1058 bool isSetEndImm() const {
1059 if (!isImm()) return false;
1060 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
1061 if (!CE) return false;
1062 int64_t Value = CE->getValue();
1063 return Value == 1 || Value == 0;
1065 bool isReg() const override { return Kind == k_Register; }
1066 bool isRegList() const { return Kind == k_RegisterList; }
1067 bool isDPRRegList() const { return Kind == k_DPRRegisterList; }
1068 bool isSPRRegList() const { return Kind == k_SPRRegisterList; }
1069 bool isToken() const override { return Kind == k_Token; }
1070 bool isMemBarrierOpt() const { return Kind == k_MemBarrierOpt; }
1071 bool isInstSyncBarrierOpt() const { return Kind == k_InstSyncBarrierOpt; }
1072 bool isMem() const override { return Kind == k_Memory; }
1073 bool isShifterImm() const { return Kind == k_ShifterImmediate; }
1074 bool isRegShiftedReg() const { return Kind == k_ShiftedRegister; }
1075 bool isRegShiftedImm() const { return Kind == k_ShiftedImmediate; }
1076 bool isRotImm() const { return Kind == k_RotateImmediate; }
1077 bool isBitfield() const { return Kind == k_BitfieldDescriptor; }
1078 bool isPostIdxRegShifted() const { return Kind == k_PostIndexRegister; }
1079 bool isPostIdxReg() const {
1080 return Kind == k_PostIndexRegister && PostIdxReg.ShiftTy ==ARM_AM::no_shift;
1082 bool isMemNoOffset(bool alignOK = false, unsigned Alignment = 0) const {
1085 // No offset of any kind.
1086 return Memory.OffsetRegNum == 0 && Memory.OffsetImm == nullptr &&
1087 (alignOK || Memory.Alignment == Alignment);
1089 bool isMemPCRelImm12() const {
1090 if (!isMem() || Memory.OffsetRegNum != 0 || Memory.Alignment != 0)
1092 // Base register must be PC.
1093 if (Memory.BaseRegNum != ARM::PC)
1095 // Immediate offset in range [-4095, 4095].
1096 if (!Memory.OffsetImm) return true;
1097 int64_t Val = Memory.OffsetImm->getValue();
1098 return (Val > -4096 && Val < 4096) || (Val == INT32_MIN);
1100 bool isAlignedMemory() const {
1101 return isMemNoOffset(true);
1103 bool isAlignedMemoryNone() const {
1104 return isMemNoOffset(false, 0);
1106 bool isDupAlignedMemoryNone() const {
1107 return isMemNoOffset(false, 0);
1109 bool isAlignedMemory16() const {
1110 if (isMemNoOffset(false, 2)) // alignment in bytes for 16-bits is 2.
1112 return isMemNoOffset(false, 0);
1114 bool isDupAlignedMemory16() const {
1115 if (isMemNoOffset(false, 2)) // alignment in bytes for 16-bits is 2.
1117 return isMemNoOffset(false, 0);
1119 bool isAlignedMemory32() const {
1120 if (isMemNoOffset(false, 4)) // alignment in bytes for 32-bits is 4.
1122 return isMemNoOffset(false, 0);
1124 bool isDupAlignedMemory32() const {
1125 if (isMemNoOffset(false, 4)) // alignment in bytes for 32-bits is 4.
1127 return isMemNoOffset(false, 0);
1129 bool isAlignedMemory64() const {
1130 if (isMemNoOffset(false, 8)) // alignment in bytes for 64-bits is 8.
1132 return isMemNoOffset(false, 0);
1134 bool isDupAlignedMemory64() const {
1135 if (isMemNoOffset(false, 8)) // alignment in bytes for 64-bits is 8.
1137 return isMemNoOffset(false, 0);
1139 bool isAlignedMemory64or128() const {
1140 if (isMemNoOffset(false, 8)) // alignment in bytes for 64-bits is 8.
1142 if (isMemNoOffset(false, 16)) // alignment in bytes for 128-bits is 16.
1144 return isMemNoOffset(false, 0);
1146 bool isDupAlignedMemory64or128() const {
1147 if (isMemNoOffset(false, 8)) // alignment in bytes for 64-bits is 8.
1149 if (isMemNoOffset(false, 16)) // alignment in bytes for 128-bits is 16.
1151 return isMemNoOffset(false, 0);
1153 bool isAlignedMemory64or128or256() const {
1154 if (isMemNoOffset(false, 8)) // alignment in bytes for 64-bits is 8.
1156 if (isMemNoOffset(false, 16)) // alignment in bytes for 128-bits is 16.
1158 if (isMemNoOffset(false, 32)) // alignment in bytes for 256-bits is 32.
1160 return isMemNoOffset(false, 0);
1162 bool isAddrMode2() const {
1163 if (!isMem() || Memory.Alignment != 0) return false;
1164 // Check for register offset.
1165 if (Memory.OffsetRegNum) return true;
1166 // Immediate offset in range [-4095, 4095].
1167 if (!Memory.OffsetImm) return true;
1168 int64_t Val = Memory.OffsetImm->getValue();
1169 return Val > -4096 && Val < 4096;
1171 bool isAM2OffsetImm() const {
1172 if (!isImm()) return false;
1173 // Immediate offset in range [-4095, 4095].
1174 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
1175 if (!CE) return false;
1176 int64_t Val = CE->getValue();
1177 return (Val == INT32_MIN) || (Val > -4096 && Val < 4096);
1179 bool isAddrMode3() const {
1180 // If we have an immediate that's not a constant, treat it as a label
1181 // reference needing a fixup. If it is a constant, it's something else
1182 // and we reject it.
1183 if (isImm() && !isa<MCConstantExpr>(getImm()))
1185 if (!isMem() || Memory.Alignment != 0) return false;
1186 // No shifts are legal for AM3.
1187 if (Memory.ShiftType != ARM_AM::no_shift) return false;
1188 // Check for register offset.
1189 if (Memory.OffsetRegNum) return true;
1190 // Immediate offset in range [-255, 255].
1191 if (!Memory.OffsetImm) return true;
1192 int64_t Val = Memory.OffsetImm->getValue();
1193 // The #-0 offset is encoded as INT32_MIN, and we have to check
1195 return (Val > -256 && Val < 256) || Val == INT32_MIN;
1197 bool isAM3Offset() const {
1198 if (Kind != k_Immediate && Kind != k_PostIndexRegister)
1200 if (Kind == k_PostIndexRegister)
1201 return PostIdxReg.ShiftTy == ARM_AM::no_shift;
1202 // Immediate offset in range [-255, 255].
1203 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
1204 if (!CE) return false;
1205 int64_t Val = CE->getValue();
1206 // Special case, #-0 is INT32_MIN.
1207 return (Val > -256 && Val < 256) || Val == INT32_MIN;
1209 bool isAddrMode5() const {
1210 // If we have an immediate that's not a constant, treat it as a label
1211 // reference needing a fixup. If it is a constant, it's something else
1212 // and we reject it.
1213 if (isImm() && !isa<MCConstantExpr>(getImm()))
1215 if (!isMem() || Memory.Alignment != 0) return false;
1216 // Check for register offset.
1217 if (Memory.OffsetRegNum) return false;
1218 // Immediate offset in range [-1020, 1020] and a multiple of 4.
1219 if (!Memory.OffsetImm) return true;
1220 int64_t Val = Memory.OffsetImm->getValue();
1221 return (Val >= -1020 && Val <= 1020 && ((Val & 3) == 0)) ||
1224 bool isMemTBB() const {
1225 if (!isMem() || !Memory.OffsetRegNum || Memory.isNegative ||
1226 Memory.ShiftType != ARM_AM::no_shift || Memory.Alignment != 0)
1230 bool isMemTBH() const {
1231 if (!isMem() || !Memory.OffsetRegNum || Memory.isNegative ||
1232 Memory.ShiftType != ARM_AM::lsl || Memory.ShiftImm != 1 ||
1233 Memory.Alignment != 0 )
1237 bool isMemRegOffset() const {
1238 if (!isMem() || !Memory.OffsetRegNum || Memory.Alignment != 0)
1242 bool isT2MemRegOffset() const {
1243 if (!isMem() || !Memory.OffsetRegNum || Memory.isNegative ||
1244 Memory.Alignment != 0)
1246 // Only lsl #{0, 1, 2, 3} allowed.
1247 if (Memory.ShiftType == ARM_AM::no_shift)
1249 if (Memory.ShiftType != ARM_AM::lsl || Memory.ShiftImm > 3)
1253 bool isMemThumbRR() const {
1254 // Thumb reg+reg addressing is simple. Just two registers, a base and
1255 // an offset. No shifts, negations or any other complicating factors.
1256 if (!isMem() || !Memory.OffsetRegNum || Memory.isNegative ||
1257 Memory.ShiftType != ARM_AM::no_shift || Memory.Alignment != 0)
1259 return isARMLowRegister(Memory.BaseRegNum) &&
1260 (!Memory.OffsetRegNum || isARMLowRegister(Memory.OffsetRegNum));
1262 bool isMemThumbRIs4() const {
1263 if (!isMem() || Memory.OffsetRegNum != 0 ||
1264 !isARMLowRegister(Memory.BaseRegNum) || Memory.Alignment != 0)
1266 // Immediate offset, multiple of 4 in range [0, 124].
1267 if (!Memory.OffsetImm) return true;
1268 int64_t Val = Memory.OffsetImm->getValue();
1269 return Val >= 0 && Val <= 124 && (Val % 4) == 0;
1271 bool isMemThumbRIs2() const {
1272 if (!isMem() || Memory.OffsetRegNum != 0 ||
1273 !isARMLowRegister(Memory.BaseRegNum) || Memory.Alignment != 0)
1275 // Immediate offset, multiple of 4 in range [0, 62].
1276 if (!Memory.OffsetImm) return true;
1277 int64_t Val = Memory.OffsetImm->getValue();
1278 return Val >= 0 && Val <= 62 && (Val % 2) == 0;
1280 bool isMemThumbRIs1() const {
1281 if (!isMem() || Memory.OffsetRegNum != 0 ||
1282 !isARMLowRegister(Memory.BaseRegNum) || Memory.Alignment != 0)
1284 // Immediate offset in range [0, 31].
1285 if (!Memory.OffsetImm) return true;
1286 int64_t Val = Memory.OffsetImm->getValue();
1287 return Val >= 0 && Val <= 31;
1289 bool isMemThumbSPI() const {
1290 if (!isMem() || Memory.OffsetRegNum != 0 ||
1291 Memory.BaseRegNum != ARM::SP || Memory.Alignment != 0)
1293 // Immediate offset, multiple of 4 in range [0, 1020].
1294 if (!Memory.OffsetImm) return true;
1295 int64_t Val = Memory.OffsetImm->getValue();
1296 return Val >= 0 && Val <= 1020 && (Val % 4) == 0;
1298 bool isMemImm8s4Offset() const {
1299 // If we have an immediate that's not a constant, treat it as a label
1300 // reference needing a fixup. If it is a constant, it's something else
1301 // and we reject it.
1302 if (isImm() && !isa<MCConstantExpr>(getImm()))
1304 if (!isMem() || Memory.OffsetRegNum != 0 || Memory.Alignment != 0)
1306 // Immediate offset a multiple of 4 in range [-1020, 1020].
1307 if (!Memory.OffsetImm) return true;
1308 int64_t Val = Memory.OffsetImm->getValue();
1309 // Special case, #-0 is INT32_MIN.
1310 return (Val >= -1020 && Val <= 1020 && (Val & 3) == 0) || Val == INT32_MIN;
1312 bool isMemImm0_1020s4Offset() const {
1313 if (!isMem() || Memory.OffsetRegNum != 0 || Memory.Alignment != 0)
1315 // Immediate offset a multiple of 4 in range [0, 1020].
1316 if (!Memory.OffsetImm) return true;
1317 int64_t Val = Memory.OffsetImm->getValue();
1318 return Val >= 0 && Val <= 1020 && (Val & 3) == 0;
1320 bool isMemImm8Offset() const {
1321 if (!isMem() || Memory.OffsetRegNum != 0 || Memory.Alignment != 0)
1323 // Base reg of PC isn't allowed for these encodings.
1324 if (Memory.BaseRegNum == ARM::PC) return false;
1325 // Immediate offset in range [-255, 255].
1326 if (!Memory.OffsetImm) return true;
1327 int64_t Val = Memory.OffsetImm->getValue();
1328 return (Val == INT32_MIN) || (Val > -256 && Val < 256);
1330 bool isMemPosImm8Offset() const {
1331 if (!isMem() || Memory.OffsetRegNum != 0 || Memory.Alignment != 0)
1333 // Immediate offset in range [0, 255].
1334 if (!Memory.OffsetImm) return true;
1335 int64_t Val = Memory.OffsetImm->getValue();
1336 return Val >= 0 && Val < 256;
1338 bool isMemNegImm8Offset() const {
1339 if (!isMem() || Memory.OffsetRegNum != 0 || Memory.Alignment != 0)
1341 // Base reg of PC isn't allowed for these encodings.
1342 if (Memory.BaseRegNum == ARM::PC) return false;
1343 // Immediate offset in range [-255, -1].
1344 if (!Memory.OffsetImm) return false;
1345 int64_t Val = Memory.OffsetImm->getValue();
1346 return (Val == INT32_MIN) || (Val > -256 && Val < 0);
1348 bool isMemUImm12Offset() const {
1349 if (!isMem() || Memory.OffsetRegNum != 0 || Memory.Alignment != 0)
1351 // Immediate offset in range [0, 4095].
1352 if (!Memory.OffsetImm) return true;
1353 int64_t Val = Memory.OffsetImm->getValue();
1354 return (Val >= 0 && Val < 4096);
1356 bool isMemImm12Offset() const {
1357 // If we have an immediate that's not a constant, treat it as a label
1358 // reference needing a fixup. If it is a constant, it's something else
1359 // and we reject it.
1360 if (isImm() && !isa<MCConstantExpr>(getImm()))
1363 if (!isMem() || Memory.OffsetRegNum != 0 || Memory.Alignment != 0)
1365 // Immediate offset in range [-4095, 4095].
1366 if (!Memory.OffsetImm) return true;
1367 int64_t Val = Memory.OffsetImm->getValue();
1368 return (Val > -4096 && Val < 4096) || (Val == INT32_MIN);
1370 bool isPostIdxImm8() const {
1371 if (!isImm()) return false;
1372 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
1373 if (!CE) return false;
1374 int64_t Val = CE->getValue();
1375 return (Val > -256 && Val < 256) || (Val == INT32_MIN);
1377 bool isPostIdxImm8s4() const {
1378 if (!isImm()) return false;
1379 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
1380 if (!CE) return false;
1381 int64_t Val = CE->getValue();
1382 return ((Val & 3) == 0 && Val >= -1020 && Val <= 1020) ||
1386 bool isMSRMask() const { return Kind == k_MSRMask; }
1387 bool isProcIFlags() const { return Kind == k_ProcIFlags; }
1390 bool isSingleSpacedVectorList() const {
1391 return Kind == k_VectorList && !VectorList.isDoubleSpaced;
1393 bool isDoubleSpacedVectorList() const {
1394 return Kind == k_VectorList && VectorList.isDoubleSpaced;
1396 bool isVecListOneD() const {
1397 if (!isSingleSpacedVectorList()) return false;
1398 return VectorList.Count == 1;
1401 bool isVecListDPair() const {
1402 if (!isSingleSpacedVectorList()) return false;
1403 return (ARMMCRegisterClasses[ARM::DPairRegClassID]
1404 .contains(VectorList.RegNum));
1407 bool isVecListThreeD() const {
1408 if (!isSingleSpacedVectorList()) return false;
1409 return VectorList.Count == 3;
1412 bool isVecListFourD() const {
1413 if (!isSingleSpacedVectorList()) return false;
1414 return VectorList.Count == 4;
1417 bool isVecListDPairSpaced() const {
1418 if (Kind != k_VectorList) return false;
1419 if (isSingleSpacedVectorList()) return false;
1420 return (ARMMCRegisterClasses[ARM::DPairSpcRegClassID]
1421 .contains(VectorList.RegNum));
1424 bool isVecListThreeQ() const {
1425 if (!isDoubleSpacedVectorList()) return false;
1426 return VectorList.Count == 3;
1429 bool isVecListFourQ() const {
1430 if (!isDoubleSpacedVectorList()) return false;
1431 return VectorList.Count == 4;
1434 bool isSingleSpacedVectorAllLanes() const {
1435 return Kind == k_VectorListAllLanes && !VectorList.isDoubleSpaced;
1437 bool isDoubleSpacedVectorAllLanes() const {
1438 return Kind == k_VectorListAllLanes && VectorList.isDoubleSpaced;
1440 bool isVecListOneDAllLanes() const {
1441 if (!isSingleSpacedVectorAllLanes()) return false;
1442 return VectorList.Count == 1;
1445 bool isVecListDPairAllLanes() const {
1446 if (!isSingleSpacedVectorAllLanes()) return false;
1447 return (ARMMCRegisterClasses[ARM::DPairRegClassID]
1448 .contains(VectorList.RegNum));
1451 bool isVecListDPairSpacedAllLanes() const {
1452 if (!isDoubleSpacedVectorAllLanes()) return false;
1453 return VectorList.Count == 2;
1456 bool isVecListThreeDAllLanes() const {
1457 if (!isSingleSpacedVectorAllLanes()) return false;
1458 return VectorList.Count == 3;
1461 bool isVecListThreeQAllLanes() const {
1462 if (!isDoubleSpacedVectorAllLanes()) return false;
1463 return VectorList.Count == 3;
1466 bool isVecListFourDAllLanes() const {
1467 if (!isSingleSpacedVectorAllLanes()) return false;
1468 return VectorList.Count == 4;
1471 bool isVecListFourQAllLanes() const {
1472 if (!isDoubleSpacedVectorAllLanes()) return false;
1473 return VectorList.Count == 4;
1476 bool isSingleSpacedVectorIndexed() const {
1477 return Kind == k_VectorListIndexed && !VectorList.isDoubleSpaced;
1479 bool isDoubleSpacedVectorIndexed() const {
1480 return Kind == k_VectorListIndexed && VectorList.isDoubleSpaced;
1482 bool isVecListOneDByteIndexed() const {
1483 if (!isSingleSpacedVectorIndexed()) return false;
1484 return VectorList.Count == 1 && VectorList.LaneIndex <= 7;
1487 bool isVecListOneDHWordIndexed() const {
1488 if (!isSingleSpacedVectorIndexed()) return false;
1489 return VectorList.Count == 1 && VectorList.LaneIndex <= 3;
1492 bool isVecListOneDWordIndexed() const {
1493 if (!isSingleSpacedVectorIndexed()) return false;
1494 return VectorList.Count == 1 && VectorList.LaneIndex <= 1;
1497 bool isVecListTwoDByteIndexed() const {
1498 if (!isSingleSpacedVectorIndexed()) return false;
1499 return VectorList.Count == 2 && VectorList.LaneIndex <= 7;
1502 bool isVecListTwoDHWordIndexed() const {
1503 if (!isSingleSpacedVectorIndexed()) return false;
1504 return VectorList.Count == 2 && VectorList.LaneIndex <= 3;
1507 bool isVecListTwoQWordIndexed() const {
1508 if (!isDoubleSpacedVectorIndexed()) return false;
1509 return VectorList.Count == 2 && VectorList.LaneIndex <= 1;
1512 bool isVecListTwoQHWordIndexed() const {
1513 if (!isDoubleSpacedVectorIndexed()) return false;
1514 return VectorList.Count == 2 && VectorList.LaneIndex <= 3;
1517 bool isVecListTwoDWordIndexed() const {
1518 if (!isSingleSpacedVectorIndexed()) return false;
1519 return VectorList.Count == 2 && VectorList.LaneIndex <= 1;
1522 bool isVecListThreeDByteIndexed() const {
1523 if (!isSingleSpacedVectorIndexed()) return false;
1524 return VectorList.Count == 3 && VectorList.LaneIndex <= 7;
1527 bool isVecListThreeDHWordIndexed() const {
1528 if (!isSingleSpacedVectorIndexed()) return false;
1529 return VectorList.Count == 3 && VectorList.LaneIndex <= 3;
1532 bool isVecListThreeQWordIndexed() const {
1533 if (!isDoubleSpacedVectorIndexed()) return false;
1534 return VectorList.Count == 3 && VectorList.LaneIndex <= 1;
1537 bool isVecListThreeQHWordIndexed() const {
1538 if (!isDoubleSpacedVectorIndexed()) return false;
1539 return VectorList.Count == 3 && VectorList.LaneIndex <= 3;
1542 bool isVecListThreeDWordIndexed() const {
1543 if (!isSingleSpacedVectorIndexed()) return false;
1544 return VectorList.Count == 3 && VectorList.LaneIndex <= 1;
1547 bool isVecListFourDByteIndexed() const {
1548 if (!isSingleSpacedVectorIndexed()) return false;
1549 return VectorList.Count == 4 && VectorList.LaneIndex <= 7;
1552 bool isVecListFourDHWordIndexed() const {
1553 if (!isSingleSpacedVectorIndexed()) return false;
1554 return VectorList.Count == 4 && VectorList.LaneIndex <= 3;
1557 bool isVecListFourQWordIndexed() const {
1558 if (!isDoubleSpacedVectorIndexed()) return false;
1559 return VectorList.Count == 4 && VectorList.LaneIndex <= 1;
1562 bool isVecListFourQHWordIndexed() const {
1563 if (!isDoubleSpacedVectorIndexed()) return false;
1564 return VectorList.Count == 4 && VectorList.LaneIndex <= 3;
1567 bool isVecListFourDWordIndexed() const {
1568 if (!isSingleSpacedVectorIndexed()) return false;
1569 return VectorList.Count == 4 && VectorList.LaneIndex <= 1;
1572 bool isVectorIndex8() const {
1573 if (Kind != k_VectorIndex) return false;
1574 return VectorIndex.Val < 8;
1576 bool isVectorIndex16() const {
1577 if (Kind != k_VectorIndex) return false;
1578 return VectorIndex.Val < 4;
1580 bool isVectorIndex32() const {
1581 if (Kind != k_VectorIndex) return false;
1582 return VectorIndex.Val < 2;
1585 bool isNEONi8splat() const {
1586 if (!isImm()) return false;
1587 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
1588 // Must be a constant.
1589 if (!CE) return false;
1590 int64_t Value = CE->getValue();
1591 // i8 value splatted across 8 bytes. The immediate is just the 8 byte
1593 return Value >= 0 && Value < 256;
1596 bool isNEONi16splat() const {
1597 if (isNEONByteReplicate(2))
1598 return false; // Leave that for bytes replication and forbid by default.
1601 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
1602 // Must be a constant.
1603 if (!CE) return false;
1604 int64_t Value = CE->getValue();
1605 // i16 value in the range [0,255] or [0x0100, 0xff00]
1606 return (Value >= 0 && Value < 256) || (Value >= 0x0100 && Value <= 0xff00);
1609 bool isNEONi32splat() const {
1610 if (isNEONByteReplicate(4))
1611 return false; // Leave that for bytes replication and forbid by default.
1614 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
1615 // Must be a constant.
1616 if (!CE) return false;
1617 int64_t Value = CE->getValue();
1618 // i32 value with set bits only in one byte X000, 0X00, 00X0, or 000X.
1619 return (Value >= 0 && Value < 256) ||
1620 (Value >= 0x0100 && Value <= 0xff00) ||
1621 (Value >= 0x010000 && Value <= 0xff0000) ||
1622 (Value >= 0x01000000 && Value <= 0xff000000);
1625 bool isNEONByteReplicate(unsigned NumBytes) const {
1628 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
1629 // Must be a constant.
1632 int64_t Value = CE->getValue();
1634 return false; // Don't bother with zero.
1636 unsigned char B = Value & 0xff;
1637 for (unsigned i = 1; i < NumBytes; ++i) {
1639 if ((Value & 0xff) != B)
1644 bool isNEONi16ByteReplicate() const { return isNEONByteReplicate(2); }
1645 bool isNEONi32ByteReplicate() const { return isNEONByteReplicate(4); }
1646 bool isNEONi32vmov() const {
1647 if (isNEONByteReplicate(4))
1648 return false; // Let it to be classified as byte-replicate case.
1651 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
1652 // Must be a constant.
1655 int64_t Value = CE->getValue();
1656 // i32 value with set bits only in one byte X000, 0X00, 00X0, or 000X,
1657 // for VMOV/VMVN only, 00Xf or 0Xff are also accepted.
1658 return (Value >= 0 && Value < 256) ||
1659 (Value >= 0x0100 && Value <= 0xff00) ||
1660 (Value >= 0x010000 && Value <= 0xff0000) ||
1661 (Value >= 0x01000000 && Value <= 0xff000000) ||
1662 (Value >= 0x01ff && Value <= 0xffff && (Value & 0xff) == 0xff) ||
1663 (Value >= 0x01ffff && Value <= 0xffffff && (Value & 0xffff) == 0xffff);
1665 bool isNEONi32vmovNeg() const {
1666 if (!isImm()) return false;
1667 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
1668 // Must be a constant.
1669 if (!CE) return false;
1670 int64_t Value = ~CE->getValue();
1671 // i32 value with set bits only in one byte X000, 0X00, 00X0, or 000X,
1672 // for VMOV/VMVN only, 00Xf or 0Xff are also accepted.
1673 return (Value >= 0 && Value < 256) ||
1674 (Value >= 0x0100 && Value <= 0xff00) ||
1675 (Value >= 0x010000 && Value <= 0xff0000) ||
1676 (Value >= 0x01000000 && Value <= 0xff000000) ||
1677 (Value >= 0x01ff && Value <= 0xffff && (Value & 0xff) == 0xff) ||
1678 (Value >= 0x01ffff && Value <= 0xffffff && (Value & 0xffff) == 0xffff);
1681 bool isNEONi64splat() const {
1682 if (!isImm()) return false;
1683 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
1684 // Must be a constant.
1685 if (!CE) return false;
1686 uint64_t Value = CE->getValue();
1687 // i64 value with each byte being either 0 or 0xff.
1688 for (unsigned i = 0; i < 8; ++i)
1689 if ((Value & 0xff) != 0 && (Value & 0xff) != 0xff) return false;
1693 void addExpr(MCInst &Inst, const MCExpr *Expr) const {
1694 // Add as immediates when possible. Null MCExpr = 0.
1696 Inst.addOperand(MCOperand::CreateImm(0));
1697 else if (const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(Expr))
1698 Inst.addOperand(MCOperand::CreateImm(CE->getValue()));
1700 Inst.addOperand(MCOperand::CreateExpr(Expr));
1703 void addCondCodeOperands(MCInst &Inst, unsigned N) const {
1704 assert(N == 2 && "Invalid number of operands!");
1705 Inst.addOperand(MCOperand::CreateImm(unsigned(getCondCode())));
1706 unsigned RegNum = getCondCode() == ARMCC::AL ? 0: ARM::CPSR;
1707 Inst.addOperand(MCOperand::CreateReg(RegNum));
1710 void addCoprocNumOperands(MCInst &Inst, unsigned N) const {
1711 assert(N == 1 && "Invalid number of operands!");
1712 Inst.addOperand(MCOperand::CreateImm(getCoproc()));
1715 void addCoprocRegOperands(MCInst &Inst, unsigned N) const {
1716 assert(N == 1 && "Invalid number of operands!");
1717 Inst.addOperand(MCOperand::CreateImm(getCoproc()));
1720 void addCoprocOptionOperands(MCInst &Inst, unsigned N) const {
1721 assert(N == 1 && "Invalid number of operands!");
1722 Inst.addOperand(MCOperand::CreateImm(CoprocOption.Val));
1725 void addITMaskOperands(MCInst &Inst, unsigned N) const {
1726 assert(N == 1 && "Invalid number of operands!");
1727 Inst.addOperand(MCOperand::CreateImm(ITMask.Mask));
1730 void addITCondCodeOperands(MCInst &Inst, unsigned N) const {
1731 assert(N == 1 && "Invalid number of operands!");
1732 Inst.addOperand(MCOperand::CreateImm(unsigned(getCondCode())));
1735 void addCCOutOperands(MCInst &Inst, unsigned N) const {
1736 assert(N == 1 && "Invalid number of operands!");
1737 Inst.addOperand(MCOperand::CreateReg(getReg()));
1740 void addRegOperands(MCInst &Inst, unsigned N) const {
1741 assert(N == 1 && "Invalid number of operands!");
1742 Inst.addOperand(MCOperand::CreateReg(getReg()));
1745 void addRegShiftedRegOperands(MCInst &Inst, unsigned N) const {
1746 assert(N == 3 && "Invalid number of operands!");
1747 assert(isRegShiftedReg() &&
1748 "addRegShiftedRegOperands() on non-RegShiftedReg!");
1749 Inst.addOperand(MCOperand::CreateReg(RegShiftedReg.SrcReg));
1750 Inst.addOperand(MCOperand::CreateReg(RegShiftedReg.ShiftReg));
1751 Inst.addOperand(MCOperand::CreateImm(
1752 ARM_AM::getSORegOpc(RegShiftedReg.ShiftTy, RegShiftedReg.ShiftImm)));
1755 void addRegShiftedImmOperands(MCInst &Inst, unsigned N) const {
1756 assert(N == 2 && "Invalid number of operands!");
1757 assert(isRegShiftedImm() &&
1758 "addRegShiftedImmOperands() on non-RegShiftedImm!");
1759 Inst.addOperand(MCOperand::CreateReg(RegShiftedImm.SrcReg));
1760 // Shift of #32 is encoded as 0 where permitted
1761 unsigned Imm = (RegShiftedImm.ShiftImm == 32 ? 0 : RegShiftedImm.ShiftImm);
1762 Inst.addOperand(MCOperand::CreateImm(
1763 ARM_AM::getSORegOpc(RegShiftedImm.ShiftTy, Imm)));
1766 void addShifterImmOperands(MCInst &Inst, unsigned N) const {
1767 assert(N == 1 && "Invalid number of operands!");
1768 Inst.addOperand(MCOperand::CreateImm((ShifterImm.isASR << 5) |
1772 void addRegListOperands(MCInst &Inst, unsigned N) const {
1773 assert(N == 1 && "Invalid number of operands!");
1774 const SmallVectorImpl<unsigned> &RegList = getRegList();
1775 for (SmallVectorImpl<unsigned>::const_iterator
1776 I = RegList.begin(), E = RegList.end(); I != E; ++I)
1777 Inst.addOperand(MCOperand::CreateReg(*I));
1780 void addDPRRegListOperands(MCInst &Inst, unsigned N) const {
1781 addRegListOperands(Inst, N);
1784 void addSPRRegListOperands(MCInst &Inst, unsigned N) const {
1785 addRegListOperands(Inst, N);
1788 void addRotImmOperands(MCInst &Inst, unsigned N) const {
1789 assert(N == 1 && "Invalid number of operands!");
1790 // Encoded as val>>3. The printer handles display as 8, 16, 24.
1791 Inst.addOperand(MCOperand::CreateImm(RotImm.Imm >> 3));
1794 void addBitfieldOperands(MCInst &Inst, unsigned N) const {
1795 assert(N == 1 && "Invalid number of operands!");
1796 // Munge the lsb/width into a bitfield mask.
1797 unsigned lsb = Bitfield.LSB;
1798 unsigned width = Bitfield.Width;
1799 // Make a 32-bit mask w/ the referenced bits clear and all other bits set.
1800 uint32_t Mask = ~(((uint32_t)0xffffffff >> lsb) << (32 - width) >>
1801 (32 - (lsb + width)));
1802 Inst.addOperand(MCOperand::CreateImm(Mask));
1805 void addImmOperands(MCInst &Inst, unsigned N) const {
1806 assert(N == 1 && "Invalid number of operands!");
1807 addExpr(Inst, getImm());
1810 void addFBits16Operands(MCInst &Inst, unsigned N) const {
1811 assert(N == 1 && "Invalid number of operands!");
1812 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
1813 Inst.addOperand(MCOperand::CreateImm(16 - CE->getValue()));
1816 void addFBits32Operands(MCInst &Inst, unsigned N) const {
1817 assert(N == 1 && "Invalid number of operands!");
1818 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
1819 Inst.addOperand(MCOperand::CreateImm(32 - CE->getValue()));
1822 void addFPImmOperands(MCInst &Inst, unsigned N) const {
1823 assert(N == 1 && "Invalid number of operands!");
1824 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
1825 int Val = ARM_AM::getFP32Imm(APInt(32, CE->getValue()));
1826 Inst.addOperand(MCOperand::CreateImm(Val));
1829 void addImm8s4Operands(MCInst &Inst, unsigned N) const {
1830 assert(N == 1 && "Invalid number of operands!");
1831 // FIXME: We really want to scale the value here, but the LDRD/STRD
1832 // instruction don't encode operands that way yet.
1833 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
1834 Inst.addOperand(MCOperand::CreateImm(CE->getValue()));
1837 void addImm0_1020s4Operands(MCInst &Inst, unsigned N) const {
1838 assert(N == 1 && "Invalid number of operands!");
1839 // The immediate is scaled by four in the encoding and is stored
1840 // in the MCInst as such. Lop off the low two bits here.
1841 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
1842 Inst.addOperand(MCOperand::CreateImm(CE->getValue() / 4));
1845 void addImm0_508s4NegOperands(MCInst &Inst, unsigned N) const {
1846 assert(N == 1 && "Invalid number of operands!");
1847 // The immediate is scaled by four in the encoding and is stored
1848 // in the MCInst as such. Lop off the low two bits here.
1849 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
1850 Inst.addOperand(MCOperand::CreateImm(-(CE->getValue() / 4)));
1853 void addImm0_508s4Operands(MCInst &Inst, unsigned N) const {
1854 assert(N == 1 && "Invalid number of operands!");
1855 // The immediate is scaled by four in the encoding and is stored
1856 // in the MCInst as such. Lop off the low two bits here.
1857 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
1858 Inst.addOperand(MCOperand::CreateImm(CE->getValue() / 4));
1861 void addImm1_16Operands(MCInst &Inst, unsigned N) const {
1862 assert(N == 1 && "Invalid number of operands!");
1863 // The constant encodes as the immediate-1, and we store in the instruction
1864 // the bits as encoded, so subtract off one here.
1865 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
1866 Inst.addOperand(MCOperand::CreateImm(CE->getValue() - 1));
1869 void addImm1_32Operands(MCInst &Inst, unsigned N) const {
1870 assert(N == 1 && "Invalid number of operands!");
1871 // The constant encodes as the immediate-1, and we store in the instruction
1872 // the bits as encoded, so subtract off one here.
1873 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
1874 Inst.addOperand(MCOperand::CreateImm(CE->getValue() - 1));
1877 void addImmThumbSROperands(MCInst &Inst, unsigned N) const {
1878 assert(N == 1 && "Invalid number of operands!");
1879 // The constant encodes as the immediate, except for 32, which encodes as
1881 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
1882 unsigned Imm = CE->getValue();
1883 Inst.addOperand(MCOperand::CreateImm((Imm == 32 ? 0 : Imm)));
1886 void addPKHASRImmOperands(MCInst &Inst, unsigned N) const {
1887 assert(N == 1 && "Invalid number of operands!");
1888 // An ASR value of 32 encodes as 0, so that's how we want to add it to
1889 // the instruction as well.
1890 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
1891 int Val = CE->getValue();
1892 Inst.addOperand(MCOperand::CreateImm(Val == 32 ? 0 : Val));
1895 void addT2SOImmNotOperands(MCInst &Inst, unsigned N) const {
1896 assert(N == 1 && "Invalid number of operands!");
1897 // The operand is actually a t2_so_imm, but we have its bitwise
1898 // negation in the assembly source, so twiddle it here.
1899 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
1900 Inst.addOperand(MCOperand::CreateImm(~CE->getValue()));
1903 void addT2SOImmNegOperands(MCInst &Inst, unsigned N) const {
1904 assert(N == 1 && "Invalid number of operands!");
1905 // The operand is actually a t2_so_imm, but we have its
1906 // negation in the assembly source, so twiddle it here.
1907 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
1908 Inst.addOperand(MCOperand::CreateImm(-CE->getValue()));
1911 void addImm0_4095NegOperands(MCInst &Inst, unsigned N) const {
1912 assert(N == 1 && "Invalid number of operands!");
1913 // The operand is actually an imm0_4095, but we have its
1914 // negation in the assembly source, so twiddle it here.
1915 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
1916 Inst.addOperand(MCOperand::CreateImm(-CE->getValue()));
1919 void addUnsignedOffset_b8s2Operands(MCInst &Inst, unsigned N) const {
1920 if(const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm())) {
1921 Inst.addOperand(MCOperand::CreateImm(CE->getValue() >> 2));
1925 const MCSymbolRefExpr *SR = dyn_cast<MCSymbolRefExpr>(Imm.Val);
1926 assert(SR && "Unknown value type!");
1927 Inst.addOperand(MCOperand::CreateExpr(SR));
1930 void addThumbMemPCOperands(MCInst &Inst, unsigned N) const {
1931 assert(N == 1 && "Invalid number of operands!");
1933 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
1935 Inst.addOperand(MCOperand::CreateImm(CE->getValue()));
1939 const MCSymbolRefExpr *SR = dyn_cast<MCSymbolRefExpr>(Imm.Val);
1940 assert(SR && "Unknown value type!");
1941 Inst.addOperand(MCOperand::CreateExpr(SR));
1945 assert(isMem() && "Unknown value type!");
1946 assert(isa<MCConstantExpr>(Memory.OffsetImm) && "Unknown value type!");
1947 Inst.addOperand(MCOperand::CreateImm(Memory.OffsetImm->getValue()));
1950 void addARMSOImmNotOperands(MCInst &Inst, unsigned N) const {
1951 assert(N == 1 && "Invalid number of operands!");
1952 // The operand is actually a so_imm, but we have its bitwise
1953 // negation in the assembly source, so twiddle it here.
1954 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
1955 Inst.addOperand(MCOperand::CreateImm(~CE->getValue()));
1958 void addARMSOImmNegOperands(MCInst &Inst, unsigned N) const {
1959 assert(N == 1 && "Invalid number of operands!");
1960 // The operand is actually a so_imm, but we have its
1961 // negation in the assembly source, so twiddle it here.
1962 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
1963 Inst.addOperand(MCOperand::CreateImm(-CE->getValue()));
1966 void addMemBarrierOptOperands(MCInst &Inst, unsigned N) const {
1967 assert(N == 1 && "Invalid number of operands!");
1968 Inst.addOperand(MCOperand::CreateImm(unsigned(getMemBarrierOpt())));
1971 void addInstSyncBarrierOptOperands(MCInst &Inst, unsigned N) const {
1972 assert(N == 1 && "Invalid number of operands!");
1973 Inst.addOperand(MCOperand::CreateImm(unsigned(getInstSyncBarrierOpt())));
1976 void addMemNoOffsetOperands(MCInst &Inst, unsigned N) const {
1977 assert(N == 1 && "Invalid number of operands!");
1978 Inst.addOperand(MCOperand::CreateReg(Memory.BaseRegNum));
1981 void addMemPCRelImm12Operands(MCInst &Inst, unsigned N) const {
1982 assert(N == 1 && "Invalid number of operands!");
1983 int32_t Imm = Memory.OffsetImm->getValue();
1984 Inst.addOperand(MCOperand::CreateImm(Imm));
1987 void addAdrLabelOperands(MCInst &Inst, unsigned N) const {
1988 assert(N == 1 && "Invalid number of operands!");
1989 assert(isImm() && "Not an immediate!");
1991 // If we have an immediate that's not a constant, treat it as a label
1992 // reference needing a fixup.
1993 if (!isa<MCConstantExpr>(getImm())) {
1994 Inst.addOperand(MCOperand::CreateExpr(getImm()));
1998 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
1999 int Val = CE->getValue();
2000 Inst.addOperand(MCOperand::CreateImm(Val));
2003 void addAlignedMemoryOperands(MCInst &Inst, unsigned N) const {
2004 assert(N == 2 && "Invalid number of operands!");
2005 Inst.addOperand(MCOperand::CreateReg(Memory.BaseRegNum));
2006 Inst.addOperand(MCOperand::CreateImm(Memory.Alignment));
2009 void addDupAlignedMemoryNoneOperands(MCInst &Inst, unsigned N) const {
2010 addAlignedMemoryOperands(Inst, N);
2013 void addAlignedMemoryNoneOperands(MCInst &Inst, unsigned N) const {
2014 addAlignedMemoryOperands(Inst, N);
2017 void addAlignedMemory16Operands(MCInst &Inst, unsigned N) const {
2018 addAlignedMemoryOperands(Inst, N);
2021 void addDupAlignedMemory16Operands(MCInst &Inst, unsigned N) const {
2022 addAlignedMemoryOperands(Inst, N);
2025 void addAlignedMemory32Operands(MCInst &Inst, unsigned N) const {
2026 addAlignedMemoryOperands(Inst, N);
2029 void addDupAlignedMemory32Operands(MCInst &Inst, unsigned N) const {
2030 addAlignedMemoryOperands(Inst, N);
2033 void addAlignedMemory64Operands(MCInst &Inst, unsigned N) const {
2034 addAlignedMemoryOperands(Inst, N);
2037 void addDupAlignedMemory64Operands(MCInst &Inst, unsigned N) const {
2038 addAlignedMemoryOperands(Inst, N);
2041 void addAlignedMemory64or128Operands(MCInst &Inst, unsigned N) const {
2042 addAlignedMemoryOperands(Inst, N);
2045 void addDupAlignedMemory64or128Operands(MCInst &Inst, unsigned N) const {
2046 addAlignedMemoryOperands(Inst, N);
2049 void addAlignedMemory64or128or256Operands(MCInst &Inst, unsigned N) const {
2050 addAlignedMemoryOperands(Inst, N);
2053 void addAddrMode2Operands(MCInst &Inst, unsigned N) const {
2054 assert(N == 3 && "Invalid number of operands!");
2055 int32_t Val = Memory.OffsetImm ? Memory.OffsetImm->getValue() : 0;
2056 if (!Memory.OffsetRegNum) {
2057 ARM_AM::AddrOpc AddSub = Val < 0 ? ARM_AM::sub : ARM_AM::add;
2058 // Special case for #-0
2059 if (Val == INT32_MIN) Val = 0;
2060 if (Val < 0) Val = -Val;
2061 Val = ARM_AM::getAM2Opc(AddSub, Val, ARM_AM::no_shift);
2063 // For register offset, we encode the shift type and negation flag
2065 Val = ARM_AM::getAM2Opc(Memory.isNegative ? ARM_AM::sub : ARM_AM::add,
2066 Memory.ShiftImm, Memory.ShiftType);
2068 Inst.addOperand(MCOperand::CreateReg(Memory.BaseRegNum));
2069 Inst.addOperand(MCOperand::CreateReg(Memory.OffsetRegNum));
2070 Inst.addOperand(MCOperand::CreateImm(Val));
2073 void addAM2OffsetImmOperands(MCInst &Inst, unsigned N) const {
2074 assert(N == 2 && "Invalid number of operands!");
2075 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
2076 assert(CE && "non-constant AM2OffsetImm operand!");
2077 int32_t Val = CE->getValue();
2078 ARM_AM::AddrOpc AddSub = Val < 0 ? ARM_AM::sub : ARM_AM::add;
2079 // Special case for #-0
2080 if (Val == INT32_MIN) Val = 0;
2081 if (Val < 0) Val = -Val;
2082 Val = ARM_AM::getAM2Opc(AddSub, Val, ARM_AM::no_shift);
2083 Inst.addOperand(MCOperand::CreateReg(0));
2084 Inst.addOperand(MCOperand::CreateImm(Val));
2087 void addAddrMode3Operands(MCInst &Inst, unsigned N) const {
2088 assert(N == 3 && "Invalid number of operands!");
2089 // If we have an immediate that's not a constant, treat it as a label
2090 // reference needing a fixup. If it is a constant, it's something else
2091 // and we reject it.
2093 Inst.addOperand(MCOperand::CreateExpr(getImm()));
2094 Inst.addOperand(MCOperand::CreateReg(0));
2095 Inst.addOperand(MCOperand::CreateImm(0));
2099 int32_t Val = Memory.OffsetImm ? Memory.OffsetImm->getValue() : 0;
2100 if (!Memory.OffsetRegNum) {
2101 ARM_AM::AddrOpc AddSub = Val < 0 ? ARM_AM::sub : ARM_AM::add;
2102 // Special case for #-0
2103 if (Val == INT32_MIN) Val = 0;
2104 if (Val < 0) Val = -Val;
2105 Val = ARM_AM::getAM3Opc(AddSub, Val);
2107 // For register offset, we encode the shift type and negation flag
2109 Val = ARM_AM::getAM3Opc(Memory.isNegative ? ARM_AM::sub : ARM_AM::add, 0);
2111 Inst.addOperand(MCOperand::CreateReg(Memory.BaseRegNum));
2112 Inst.addOperand(MCOperand::CreateReg(Memory.OffsetRegNum));
2113 Inst.addOperand(MCOperand::CreateImm(Val));
2116 void addAM3OffsetOperands(MCInst &Inst, unsigned N) const {
2117 assert(N == 2 && "Invalid number of operands!");
2118 if (Kind == k_PostIndexRegister) {
2120 ARM_AM::getAM3Opc(PostIdxReg.isAdd ? ARM_AM::add : ARM_AM::sub, 0);
2121 Inst.addOperand(MCOperand::CreateReg(PostIdxReg.RegNum));
2122 Inst.addOperand(MCOperand::CreateImm(Val));
2127 const MCConstantExpr *CE = static_cast<const MCConstantExpr*>(getImm());
2128 int32_t Val = CE->getValue();
2129 ARM_AM::AddrOpc AddSub = Val < 0 ? ARM_AM::sub : ARM_AM::add;
2130 // Special case for #-0
2131 if (Val == INT32_MIN) Val = 0;
2132 if (Val < 0) Val = -Val;
2133 Val = ARM_AM::getAM3Opc(AddSub, Val);
2134 Inst.addOperand(MCOperand::CreateReg(0));
2135 Inst.addOperand(MCOperand::CreateImm(Val));
2138 void addAddrMode5Operands(MCInst &Inst, unsigned N) const {
2139 assert(N == 2 && "Invalid number of operands!");
2140 // If we have an immediate that's not a constant, treat it as a label
2141 // reference needing a fixup. If it is a constant, it's something else
2142 // and we reject it.
2144 Inst.addOperand(MCOperand::CreateExpr(getImm()));
2145 Inst.addOperand(MCOperand::CreateImm(0));
2149 // The lower two bits are always zero and as such are not encoded.
2150 int32_t Val = Memory.OffsetImm ? Memory.OffsetImm->getValue() / 4 : 0;
2151 ARM_AM::AddrOpc AddSub = Val < 0 ? ARM_AM::sub : ARM_AM::add;
2152 // Special case for #-0
2153 if (Val == INT32_MIN) Val = 0;
2154 if (Val < 0) Val = -Val;
2155 Val = ARM_AM::getAM5Opc(AddSub, Val);
2156 Inst.addOperand(MCOperand::CreateReg(Memory.BaseRegNum));
2157 Inst.addOperand(MCOperand::CreateImm(Val));
2160 void addMemImm8s4OffsetOperands(MCInst &Inst, unsigned N) const {
2161 assert(N == 2 && "Invalid number of operands!");
2162 // If we have an immediate that's not a constant, treat it as a label
2163 // reference needing a fixup. If it is a constant, it's something else
2164 // and we reject it.
2166 Inst.addOperand(MCOperand::CreateExpr(getImm()));
2167 Inst.addOperand(MCOperand::CreateImm(0));
2171 int64_t Val = Memory.OffsetImm ? Memory.OffsetImm->getValue() : 0;
2172 Inst.addOperand(MCOperand::CreateReg(Memory.BaseRegNum));
2173 Inst.addOperand(MCOperand::CreateImm(Val));
2176 void addMemImm0_1020s4OffsetOperands(MCInst &Inst, unsigned N) const {
2177 assert(N == 2 && "Invalid number of operands!");
2178 // The lower two bits are always zero and as such are not encoded.
2179 int32_t Val = Memory.OffsetImm ? Memory.OffsetImm->getValue() / 4 : 0;
2180 Inst.addOperand(MCOperand::CreateReg(Memory.BaseRegNum));
2181 Inst.addOperand(MCOperand::CreateImm(Val));
2184 void addMemImm8OffsetOperands(MCInst &Inst, unsigned N) const {
2185 assert(N == 2 && "Invalid number of operands!");
2186 int64_t Val = Memory.OffsetImm ? Memory.OffsetImm->getValue() : 0;
2187 Inst.addOperand(MCOperand::CreateReg(Memory.BaseRegNum));
2188 Inst.addOperand(MCOperand::CreateImm(Val));
2191 void addMemPosImm8OffsetOperands(MCInst &Inst, unsigned N) const {
2192 addMemImm8OffsetOperands(Inst, N);
2195 void addMemNegImm8OffsetOperands(MCInst &Inst, unsigned N) const {
2196 addMemImm8OffsetOperands(Inst, N);
2199 void addMemUImm12OffsetOperands(MCInst &Inst, unsigned N) const {
2200 assert(N == 2 && "Invalid number of operands!");
2201 // If this is an immediate, it's a label reference.
2203 addExpr(Inst, getImm());
2204 Inst.addOperand(MCOperand::CreateImm(0));
2208 // Otherwise, it's a normal memory reg+offset.
2209 int64_t Val = Memory.OffsetImm ? Memory.OffsetImm->getValue() : 0;
2210 Inst.addOperand(MCOperand::CreateReg(Memory.BaseRegNum));
2211 Inst.addOperand(MCOperand::CreateImm(Val));
2214 void addMemImm12OffsetOperands(MCInst &Inst, unsigned N) const {
2215 assert(N == 2 && "Invalid number of operands!");
2216 // If this is an immediate, it's a label reference.
2218 addExpr(Inst, getImm());
2219 Inst.addOperand(MCOperand::CreateImm(0));
2223 // Otherwise, it's a normal memory reg+offset.
2224 int64_t Val = Memory.OffsetImm ? Memory.OffsetImm->getValue() : 0;
2225 Inst.addOperand(MCOperand::CreateReg(Memory.BaseRegNum));
2226 Inst.addOperand(MCOperand::CreateImm(Val));
2229 void addMemTBBOperands(MCInst &Inst, unsigned N) const {
2230 assert(N == 2 && "Invalid number of operands!");
2231 Inst.addOperand(MCOperand::CreateReg(Memory.BaseRegNum));
2232 Inst.addOperand(MCOperand::CreateReg(Memory.OffsetRegNum));
2235 void addMemTBHOperands(MCInst &Inst, unsigned N) const {
2236 assert(N == 2 && "Invalid number of operands!");
2237 Inst.addOperand(MCOperand::CreateReg(Memory.BaseRegNum));
2238 Inst.addOperand(MCOperand::CreateReg(Memory.OffsetRegNum));
2241 void addMemRegOffsetOperands(MCInst &Inst, unsigned N) const {
2242 assert(N == 3 && "Invalid number of operands!");
2244 ARM_AM::getAM2Opc(Memory.isNegative ? ARM_AM::sub : ARM_AM::add,
2245 Memory.ShiftImm, Memory.ShiftType);
2246 Inst.addOperand(MCOperand::CreateReg(Memory.BaseRegNum));
2247 Inst.addOperand(MCOperand::CreateReg(Memory.OffsetRegNum));
2248 Inst.addOperand(MCOperand::CreateImm(Val));
2251 void addT2MemRegOffsetOperands(MCInst &Inst, unsigned N) const {
2252 assert(N == 3 && "Invalid number of operands!");
2253 Inst.addOperand(MCOperand::CreateReg(Memory.BaseRegNum));
2254 Inst.addOperand(MCOperand::CreateReg(Memory.OffsetRegNum));
2255 Inst.addOperand(MCOperand::CreateImm(Memory.ShiftImm));
2258 void addMemThumbRROperands(MCInst &Inst, unsigned N) const {
2259 assert(N == 2 && "Invalid number of operands!");
2260 Inst.addOperand(MCOperand::CreateReg(Memory.BaseRegNum));
2261 Inst.addOperand(MCOperand::CreateReg(Memory.OffsetRegNum));
2264 void addMemThumbRIs4Operands(MCInst &Inst, unsigned N) const {
2265 assert(N == 2 && "Invalid number of operands!");
2266 int64_t Val = Memory.OffsetImm ? (Memory.OffsetImm->getValue() / 4) : 0;
2267 Inst.addOperand(MCOperand::CreateReg(Memory.BaseRegNum));
2268 Inst.addOperand(MCOperand::CreateImm(Val));
2271 void addMemThumbRIs2Operands(MCInst &Inst, unsigned N) const {
2272 assert(N == 2 && "Invalid number of operands!");
2273 int64_t Val = Memory.OffsetImm ? (Memory.OffsetImm->getValue() / 2) : 0;
2274 Inst.addOperand(MCOperand::CreateReg(Memory.BaseRegNum));
2275 Inst.addOperand(MCOperand::CreateImm(Val));
2278 void addMemThumbRIs1Operands(MCInst &Inst, unsigned N) const {
2279 assert(N == 2 && "Invalid number of operands!");
2280 int64_t Val = Memory.OffsetImm ? (Memory.OffsetImm->getValue()) : 0;
2281 Inst.addOperand(MCOperand::CreateReg(Memory.BaseRegNum));
2282 Inst.addOperand(MCOperand::CreateImm(Val));
2285 void addMemThumbSPIOperands(MCInst &Inst, unsigned N) const {
2286 assert(N == 2 && "Invalid number of operands!");
2287 int64_t Val = Memory.OffsetImm ? (Memory.OffsetImm->getValue() / 4) : 0;
2288 Inst.addOperand(MCOperand::CreateReg(Memory.BaseRegNum));
2289 Inst.addOperand(MCOperand::CreateImm(Val));
2292 void addPostIdxImm8Operands(MCInst &Inst, unsigned N) const {
2293 assert(N == 1 && "Invalid number of operands!");
2294 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
2295 assert(CE && "non-constant post-idx-imm8 operand!");
2296 int Imm = CE->getValue();
2297 bool isAdd = Imm >= 0;
2298 if (Imm == INT32_MIN) Imm = 0;
2299 Imm = (Imm < 0 ? -Imm : Imm) | (int)isAdd << 8;
2300 Inst.addOperand(MCOperand::CreateImm(Imm));
2303 void addPostIdxImm8s4Operands(MCInst &Inst, unsigned N) const {
2304 assert(N == 1 && "Invalid number of operands!");
2305 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
2306 assert(CE && "non-constant post-idx-imm8s4 operand!");
2307 int Imm = CE->getValue();
2308 bool isAdd = Imm >= 0;
2309 if (Imm == INT32_MIN) Imm = 0;
2310 // Immediate is scaled by 4.
2311 Imm = ((Imm < 0 ? -Imm : Imm) / 4) | (int)isAdd << 8;
2312 Inst.addOperand(MCOperand::CreateImm(Imm));
2315 void addPostIdxRegOperands(MCInst &Inst, unsigned N) const {
2316 assert(N == 2 && "Invalid number of operands!");
2317 Inst.addOperand(MCOperand::CreateReg(PostIdxReg.RegNum));
2318 Inst.addOperand(MCOperand::CreateImm(PostIdxReg.isAdd));
2321 void addPostIdxRegShiftedOperands(MCInst &Inst, unsigned N) const {
2322 assert(N == 2 && "Invalid number of operands!");
2323 Inst.addOperand(MCOperand::CreateReg(PostIdxReg.RegNum));
2324 // The sign, shift type, and shift amount are encoded in a single operand
2325 // using the AM2 encoding helpers.
2326 ARM_AM::AddrOpc opc = PostIdxReg.isAdd ? ARM_AM::add : ARM_AM::sub;
2327 unsigned Imm = ARM_AM::getAM2Opc(opc, PostIdxReg.ShiftImm,
2328 PostIdxReg.ShiftTy);
2329 Inst.addOperand(MCOperand::CreateImm(Imm));
2332 void addMSRMaskOperands(MCInst &Inst, unsigned N) const {
2333 assert(N == 1 && "Invalid number of operands!");
2334 Inst.addOperand(MCOperand::CreateImm(unsigned(getMSRMask())));
2337 void addProcIFlagsOperands(MCInst &Inst, unsigned N) const {
2338 assert(N == 1 && "Invalid number of operands!");
2339 Inst.addOperand(MCOperand::CreateImm(unsigned(getProcIFlags())));
2342 void addVecListOperands(MCInst &Inst, unsigned N) const {
2343 assert(N == 1 && "Invalid number of operands!");
2344 Inst.addOperand(MCOperand::CreateReg(VectorList.RegNum));
2347 void addVecListIndexedOperands(MCInst &Inst, unsigned N) const {
2348 assert(N == 2 && "Invalid number of operands!");
2349 Inst.addOperand(MCOperand::CreateReg(VectorList.RegNum));
2350 Inst.addOperand(MCOperand::CreateImm(VectorList.LaneIndex));
2353 void addVectorIndex8Operands(MCInst &Inst, unsigned N) const {
2354 assert(N == 1 && "Invalid number of operands!");
2355 Inst.addOperand(MCOperand::CreateImm(getVectorIndex()));
2358 void addVectorIndex16Operands(MCInst &Inst, unsigned N) const {
2359 assert(N == 1 && "Invalid number of operands!");
2360 Inst.addOperand(MCOperand::CreateImm(getVectorIndex()));
2363 void addVectorIndex32Operands(MCInst &Inst, unsigned N) const {
2364 assert(N == 1 && "Invalid number of operands!");
2365 Inst.addOperand(MCOperand::CreateImm(getVectorIndex()));
2368 void addNEONi8splatOperands(MCInst &Inst, unsigned N) const {
2369 assert(N == 1 && "Invalid number of operands!");
2370 // The immediate encodes the type of constant as well as the value.
2371 // Mask in that this is an i8 splat.
2372 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
2373 Inst.addOperand(MCOperand::CreateImm(CE->getValue() | 0xe00));
2376 void addNEONi16splatOperands(MCInst &Inst, unsigned N) const {
2377 assert(N == 1 && "Invalid number of operands!");
2378 // The immediate encodes the type of constant as well as the value.
2379 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
2380 unsigned Value = CE->getValue();
2382 Value = (Value >> 8) | 0xa00;
2385 Inst.addOperand(MCOperand::CreateImm(Value));
2388 void addNEONi32splatOperands(MCInst &Inst, unsigned N) const {
2389 assert(N == 1 && "Invalid number of operands!");
2390 // The immediate encodes the type of constant as well as the value.
2391 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
2392 unsigned Value = CE->getValue();
2393 if (Value >= 256 && Value <= 0xff00)
2394 Value = (Value >> 8) | 0x200;
2395 else if (Value > 0xffff && Value <= 0xff0000)
2396 Value = (Value >> 16) | 0x400;
2397 else if (Value > 0xffffff)
2398 Value = (Value >> 24) | 0x600;
2399 Inst.addOperand(MCOperand::CreateImm(Value));
2402 void addNEONinvByteReplicateOperands(MCInst &Inst, unsigned N) const {
2403 assert(N == 1 && "Invalid number of operands!");
2404 // The immediate encodes the type of constant as well as the value.
2405 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
2406 unsigned Value = CE->getValue();
2407 assert((Inst.getOpcode() == ARM::VMOVv8i8 ||
2408 Inst.getOpcode() == ARM::VMOVv16i8) &&
2409 "All vmvn instructions that wants to replicate non-zero byte "
2410 "always must be replaced with VMOVv8i8 or VMOVv16i8.");
2411 unsigned B = ((~Value) & 0xff);
2412 B |= 0xe00; // cmode = 0b1110
2413 Inst.addOperand(MCOperand::CreateImm(B));
2415 void addNEONi32vmovOperands(MCInst &Inst, unsigned N) const {
2416 assert(N == 1 && "Invalid number of operands!");
2417 // The immediate encodes the type of constant as well as the value.
2418 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
2419 unsigned Value = CE->getValue();
2420 if (Value >= 256 && Value <= 0xffff)
2421 Value = (Value >> 8) | ((Value & 0xff) ? 0xc00 : 0x200);
2422 else if (Value > 0xffff && Value <= 0xffffff)
2423 Value = (Value >> 16) | ((Value & 0xff) ? 0xd00 : 0x400);
2424 else if (Value > 0xffffff)
2425 Value = (Value >> 24) | 0x600;
2426 Inst.addOperand(MCOperand::CreateImm(Value));
2429 void addNEONvmovByteReplicateOperands(MCInst &Inst, unsigned N) const {
2430 assert(N == 1 && "Invalid number of operands!");
2431 // The immediate encodes the type of constant as well as the value.
2432 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
2433 unsigned Value = CE->getValue();
2434 assert((Inst.getOpcode() == ARM::VMOVv8i8 ||
2435 Inst.getOpcode() == ARM::VMOVv16i8) &&
2436 "All instructions that wants to replicate non-zero byte "
2437 "always must be replaced with VMOVv8i8 or VMOVv16i8.");
2438 unsigned B = Value & 0xff;
2439 B |= 0xe00; // cmode = 0b1110
2440 Inst.addOperand(MCOperand::CreateImm(B));
2442 void addNEONi32vmovNegOperands(MCInst &Inst, unsigned N) const {
2443 assert(N == 1 && "Invalid number of operands!");
2444 // The immediate encodes the type of constant as well as the value.
2445 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
2446 unsigned Value = ~CE->getValue();
2447 if (Value >= 256 && Value <= 0xffff)
2448 Value = (Value >> 8) | ((Value & 0xff) ? 0xc00 : 0x200);
2449 else if (Value > 0xffff && Value <= 0xffffff)
2450 Value = (Value >> 16) | ((Value & 0xff) ? 0xd00 : 0x400);
2451 else if (Value > 0xffffff)
2452 Value = (Value >> 24) | 0x600;
2453 Inst.addOperand(MCOperand::CreateImm(Value));
2456 void addNEONi64splatOperands(MCInst &Inst, unsigned N) const {
2457 assert(N == 1 && "Invalid number of operands!");
2458 // The immediate encodes the type of constant as well as the value.
2459 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
2460 uint64_t Value = CE->getValue();
2462 for (unsigned i = 0; i < 8; ++i, Value >>= 8) {
2463 Imm |= (Value & 1) << i;
2465 Inst.addOperand(MCOperand::CreateImm(Imm | 0x1e00));
2468 void print(raw_ostream &OS) const override;
2470 static std::unique_ptr<ARMOperand> CreateITMask(unsigned Mask, SMLoc S) {
2471 auto Op = make_unique<ARMOperand>(k_ITCondMask);
2472 Op->ITMask.Mask = Mask;
2478 static std::unique_ptr<ARMOperand> CreateCondCode(ARMCC::CondCodes CC,
2480 auto Op = make_unique<ARMOperand>(k_CondCode);
2487 static std::unique_ptr<ARMOperand> CreateCoprocNum(unsigned CopVal, SMLoc S) {
2488 auto Op = make_unique<ARMOperand>(k_CoprocNum);
2489 Op->Cop.Val = CopVal;
2495 static std::unique_ptr<ARMOperand> CreateCoprocReg(unsigned CopVal, SMLoc S) {
2496 auto Op = make_unique<ARMOperand>(k_CoprocReg);
2497 Op->Cop.Val = CopVal;
2503 static std::unique_ptr<ARMOperand> CreateCoprocOption(unsigned Val, SMLoc S,
2505 auto Op = make_unique<ARMOperand>(k_CoprocOption);
2512 static std::unique_ptr<ARMOperand> CreateCCOut(unsigned RegNum, SMLoc S) {
2513 auto Op = make_unique<ARMOperand>(k_CCOut);
2514 Op->Reg.RegNum = RegNum;
2520 static std::unique_ptr<ARMOperand> CreateToken(StringRef Str, SMLoc S) {
2521 auto Op = make_unique<ARMOperand>(k_Token);
2522 Op->Tok.Data = Str.data();
2523 Op->Tok.Length = Str.size();
2529 static std::unique_ptr<ARMOperand> CreateReg(unsigned RegNum, SMLoc S,
2531 auto Op = make_unique<ARMOperand>(k_Register);
2532 Op->Reg.RegNum = RegNum;
2538 static std::unique_ptr<ARMOperand>
2539 CreateShiftedRegister(ARM_AM::ShiftOpc ShTy, unsigned SrcReg,
2540 unsigned ShiftReg, unsigned ShiftImm, SMLoc S,
2542 auto Op = make_unique<ARMOperand>(k_ShiftedRegister);
2543 Op->RegShiftedReg.ShiftTy = ShTy;
2544 Op->RegShiftedReg.SrcReg = SrcReg;
2545 Op->RegShiftedReg.ShiftReg = ShiftReg;
2546 Op->RegShiftedReg.ShiftImm = ShiftImm;
2552 static std::unique_ptr<ARMOperand>
2553 CreateShiftedImmediate(ARM_AM::ShiftOpc ShTy, unsigned SrcReg,
2554 unsigned ShiftImm, SMLoc S, SMLoc E) {
2555 auto Op = make_unique<ARMOperand>(k_ShiftedImmediate);
2556 Op->RegShiftedImm.ShiftTy = ShTy;
2557 Op->RegShiftedImm.SrcReg = SrcReg;
2558 Op->RegShiftedImm.ShiftImm = ShiftImm;
2564 static std::unique_ptr<ARMOperand> CreateShifterImm(bool isASR, unsigned Imm,
2566 auto Op = make_unique<ARMOperand>(k_ShifterImmediate);
2567 Op->ShifterImm.isASR = isASR;
2568 Op->ShifterImm.Imm = Imm;
2574 static std::unique_ptr<ARMOperand> CreateRotImm(unsigned Imm, SMLoc S,
2576 auto Op = make_unique<ARMOperand>(k_RotateImmediate);
2577 Op->RotImm.Imm = Imm;
2583 static std::unique_ptr<ARMOperand>
2584 CreateBitfield(unsigned LSB, unsigned Width, SMLoc S, SMLoc E) {
2585 auto Op = make_unique<ARMOperand>(k_BitfieldDescriptor);
2586 Op->Bitfield.LSB = LSB;
2587 Op->Bitfield.Width = Width;
2593 static std::unique_ptr<ARMOperand>
2594 CreateRegList(SmallVectorImpl<std::pair<unsigned, unsigned>> &Regs,
2595 SMLoc StartLoc, SMLoc EndLoc) {
2596 assert (Regs.size() > 0 && "RegList contains no registers?");
2597 KindTy Kind = k_RegisterList;
2599 if (ARMMCRegisterClasses[ARM::DPRRegClassID].contains(Regs.front().second))
2600 Kind = k_DPRRegisterList;
2601 else if (ARMMCRegisterClasses[ARM::SPRRegClassID].
2602 contains(Regs.front().second))
2603 Kind = k_SPRRegisterList;
2605 // Sort based on the register encoding values.
2606 array_pod_sort(Regs.begin(), Regs.end());
2608 auto Op = make_unique<ARMOperand>(Kind);
2609 for (SmallVectorImpl<std::pair<unsigned, unsigned> >::const_iterator
2610 I = Regs.begin(), E = Regs.end(); I != E; ++I)
2611 Op->Registers.push_back(I->second);
2612 Op->StartLoc = StartLoc;
2613 Op->EndLoc = EndLoc;
2617 static std::unique_ptr<ARMOperand> CreateVectorList(unsigned RegNum,
2619 bool isDoubleSpaced,
2621 auto Op = make_unique<ARMOperand>(k_VectorList);
2622 Op->VectorList.RegNum = RegNum;
2623 Op->VectorList.Count = Count;
2624 Op->VectorList.isDoubleSpaced = isDoubleSpaced;
2630 static std::unique_ptr<ARMOperand>
2631 CreateVectorListAllLanes(unsigned RegNum, unsigned Count, bool isDoubleSpaced,
2633 auto Op = make_unique<ARMOperand>(k_VectorListAllLanes);
2634 Op->VectorList.RegNum = RegNum;
2635 Op->VectorList.Count = Count;
2636 Op->VectorList.isDoubleSpaced = isDoubleSpaced;
2642 static std::unique_ptr<ARMOperand>
2643 CreateVectorListIndexed(unsigned RegNum, unsigned Count, unsigned Index,
2644 bool isDoubleSpaced, SMLoc S, SMLoc E) {
2645 auto Op = make_unique<ARMOperand>(k_VectorListIndexed);
2646 Op->VectorList.RegNum = RegNum;
2647 Op->VectorList.Count = Count;
2648 Op->VectorList.LaneIndex = Index;
2649 Op->VectorList.isDoubleSpaced = isDoubleSpaced;
2655 static std::unique_ptr<ARMOperand>
2656 CreateVectorIndex(unsigned Idx, SMLoc S, SMLoc E, MCContext &Ctx) {
2657 auto Op = make_unique<ARMOperand>(k_VectorIndex);
2658 Op->VectorIndex.Val = Idx;
2664 static std::unique_ptr<ARMOperand> CreateImm(const MCExpr *Val, SMLoc S,
2666 auto Op = make_unique<ARMOperand>(k_Immediate);
2673 static std::unique_ptr<ARMOperand>
2674 CreateMem(unsigned BaseRegNum, const MCConstantExpr *OffsetImm,
2675 unsigned OffsetRegNum, ARM_AM::ShiftOpc ShiftType,
2676 unsigned ShiftImm, unsigned Alignment, bool isNegative, SMLoc S,
2677 SMLoc E, SMLoc AlignmentLoc = SMLoc()) {
2678 auto Op = make_unique<ARMOperand>(k_Memory);
2679 Op->Memory.BaseRegNum = BaseRegNum;
2680 Op->Memory.OffsetImm = OffsetImm;
2681 Op->Memory.OffsetRegNum = OffsetRegNum;
2682 Op->Memory.ShiftType = ShiftType;
2683 Op->Memory.ShiftImm = ShiftImm;
2684 Op->Memory.Alignment = Alignment;
2685 Op->Memory.isNegative = isNegative;
2688 Op->AlignmentLoc = AlignmentLoc;
2692 static std::unique_ptr<ARMOperand>
2693 CreatePostIdxReg(unsigned RegNum, bool isAdd, ARM_AM::ShiftOpc ShiftTy,
2694 unsigned ShiftImm, SMLoc S, SMLoc E) {
2695 auto Op = make_unique<ARMOperand>(k_PostIndexRegister);
2696 Op->PostIdxReg.RegNum = RegNum;
2697 Op->PostIdxReg.isAdd = isAdd;
2698 Op->PostIdxReg.ShiftTy = ShiftTy;
2699 Op->PostIdxReg.ShiftImm = ShiftImm;
2705 static std::unique_ptr<ARMOperand> CreateMemBarrierOpt(ARM_MB::MemBOpt Opt,
2707 auto Op = make_unique<ARMOperand>(k_MemBarrierOpt);
2708 Op->MBOpt.Val = Opt;
2714 static std::unique_ptr<ARMOperand>
2715 CreateInstSyncBarrierOpt(ARM_ISB::InstSyncBOpt Opt, SMLoc S) {
2716 auto Op = make_unique<ARMOperand>(k_InstSyncBarrierOpt);
2717 Op->ISBOpt.Val = Opt;
2723 static std::unique_ptr<ARMOperand> CreateProcIFlags(ARM_PROC::IFlags IFlags,
2725 auto Op = make_unique<ARMOperand>(k_ProcIFlags);
2726 Op->IFlags.Val = IFlags;
2732 static std::unique_ptr<ARMOperand> CreateMSRMask(unsigned MMask, SMLoc S) {
2733 auto Op = make_unique<ARMOperand>(k_MSRMask);
2734 Op->MMask.Val = MMask;
2741 } // end anonymous namespace.
2743 void ARMOperand::print(raw_ostream &OS) const {
2746 OS << "<ARMCC::" << ARMCondCodeToString(getCondCode()) << ">";
2749 OS << "<ccout " << getReg() << ">";
2751 case k_ITCondMask: {
2752 static const char *const MaskStr[] = {
2753 "()", "(t)", "(e)", "(tt)", "(et)", "(te)", "(ee)", "(ttt)", "(ett)",
2754 "(tet)", "(eet)", "(tte)", "(ete)", "(tee)", "(eee)"
2756 assert((ITMask.Mask & 0xf) == ITMask.Mask);
2757 OS << "<it-mask " << MaskStr[ITMask.Mask] << ">";
2761 OS << "<coprocessor number: " << getCoproc() << ">";
2764 OS << "<coprocessor register: " << getCoproc() << ">";
2766 case k_CoprocOption:
2767 OS << "<coprocessor option: " << CoprocOption.Val << ">";
2770 OS << "<mask: " << getMSRMask() << ">";
2773 getImm()->print(OS);
2775 case k_MemBarrierOpt:
2776 OS << "<ARM_MB::" << MemBOptToString(getMemBarrierOpt(), false) << ">";
2778 case k_InstSyncBarrierOpt:
2779 OS << "<ARM_ISB::" << InstSyncBOptToString(getInstSyncBarrierOpt()) << ">";
2783 << " base:" << Memory.BaseRegNum;
2786 case k_PostIndexRegister:
2787 OS << "post-idx register " << (PostIdxReg.isAdd ? "" : "-")
2788 << PostIdxReg.RegNum;
2789 if (PostIdxReg.ShiftTy != ARM_AM::no_shift)
2790 OS << ARM_AM::getShiftOpcStr(PostIdxReg.ShiftTy) << " "
2791 << PostIdxReg.ShiftImm;
2794 case k_ProcIFlags: {
2795 OS << "<ARM_PROC::";
2796 unsigned IFlags = getProcIFlags();
2797 for (int i=2; i >= 0; --i)
2798 if (IFlags & (1 << i))
2799 OS << ARM_PROC::IFlagsToString(1 << i);
2804 OS << "<register " << getReg() << ">";
2806 case k_ShifterImmediate:
2807 OS << "<shift " << (ShifterImm.isASR ? "asr" : "lsl")
2808 << " #" << ShifterImm.Imm << ">";
2810 case k_ShiftedRegister:
2811 OS << "<so_reg_reg "
2812 << RegShiftedReg.SrcReg << " "
2813 << ARM_AM::getShiftOpcStr(RegShiftedReg.ShiftTy)
2814 << " " << RegShiftedReg.ShiftReg << ">";
2816 case k_ShiftedImmediate:
2817 OS << "<so_reg_imm "
2818 << RegShiftedImm.SrcReg << " "
2819 << ARM_AM::getShiftOpcStr(RegShiftedImm.ShiftTy)
2820 << " #" << RegShiftedImm.ShiftImm << ">";
2822 case k_RotateImmediate:
2823 OS << "<ror " << " #" << (RotImm.Imm * 8) << ">";
2825 case k_BitfieldDescriptor:
2826 OS << "<bitfield " << "lsb: " << Bitfield.LSB
2827 << ", width: " << Bitfield.Width << ">";
2829 case k_RegisterList:
2830 case k_DPRRegisterList:
2831 case k_SPRRegisterList: {
2832 OS << "<register_list ";
2834 const SmallVectorImpl<unsigned> &RegList = getRegList();
2835 for (SmallVectorImpl<unsigned>::const_iterator
2836 I = RegList.begin(), E = RegList.end(); I != E; ) {
2838 if (++I < E) OS << ", ";
2845 OS << "<vector_list " << VectorList.Count << " * "
2846 << VectorList.RegNum << ">";
2848 case k_VectorListAllLanes:
2849 OS << "<vector_list(all lanes) " << VectorList.Count << " * "
2850 << VectorList.RegNum << ">";
2852 case k_VectorListIndexed:
2853 OS << "<vector_list(lane " << VectorList.LaneIndex << ") "
2854 << VectorList.Count << " * " << VectorList.RegNum << ">";
2857 OS << "'" << getToken() << "'";
2860 OS << "<vectorindex " << getVectorIndex() << ">";
2865 /// @name Auto-generated Match Functions
2868 static unsigned MatchRegisterName(StringRef Name);
2872 bool ARMAsmParser::ParseRegister(unsigned &RegNo,
2873 SMLoc &StartLoc, SMLoc &EndLoc) {
2874 StartLoc = Parser.getTok().getLoc();
2875 EndLoc = Parser.getTok().getEndLoc();
2876 RegNo = tryParseRegister();
2878 return (RegNo == (unsigned)-1);
2881 /// Try to parse a register name. The token must be an Identifier when called,
2882 /// and if it is a register name the token is eaten and the register number is
2883 /// returned. Otherwise return -1.
2885 int ARMAsmParser::tryParseRegister() {
2886 const AsmToken &Tok = Parser.getTok();
2887 if (Tok.isNot(AsmToken::Identifier)) return -1;
2889 std::string lowerCase = Tok.getString().lower();
2890 unsigned RegNum = MatchRegisterName(lowerCase);
2892 RegNum = StringSwitch<unsigned>(lowerCase)
2893 .Case("r13", ARM::SP)
2894 .Case("r14", ARM::LR)
2895 .Case("r15", ARM::PC)
2896 .Case("ip", ARM::R12)
2897 // Additional register name aliases for 'gas' compatibility.
2898 .Case("a1", ARM::R0)
2899 .Case("a2", ARM::R1)
2900 .Case("a3", ARM::R2)
2901 .Case("a4", ARM::R3)
2902 .Case("v1", ARM::R4)
2903 .Case("v2", ARM::R5)
2904 .Case("v3", ARM::R6)
2905 .Case("v4", ARM::R7)
2906 .Case("v5", ARM::R8)
2907 .Case("v6", ARM::R9)
2908 .Case("v7", ARM::R10)
2909 .Case("v8", ARM::R11)
2910 .Case("sb", ARM::R9)
2911 .Case("sl", ARM::R10)
2912 .Case("fp", ARM::R11)
2916 // Check for aliases registered via .req. Canonicalize to lower case.
2917 // That's more consistent since register names are case insensitive, and
2918 // it's how the original entry was passed in from MC/MCParser/AsmParser.
2919 StringMap<unsigned>::const_iterator Entry = RegisterReqs.find(lowerCase);
2920 // If no match, return failure.
2921 if (Entry == RegisterReqs.end())
2923 Parser.Lex(); // Eat identifier token.
2924 return Entry->getValue();
2927 Parser.Lex(); // Eat identifier token.
2932 // Try to parse a shifter (e.g., "lsl <amt>"). On success, return 0.
2933 // If a recoverable error occurs, return 1. If an irrecoverable error
2934 // occurs, return -1. An irrecoverable error is one where tokens have been
2935 // consumed in the process of trying to parse the shifter (i.e., when it is
2936 // indeed a shifter operand, but malformed).
2937 int ARMAsmParser::tryParseShiftRegister(OperandVector &Operands) {
2938 SMLoc S = Parser.getTok().getLoc();
2939 const AsmToken &Tok = Parser.getTok();
2940 if (Tok.isNot(AsmToken::Identifier))
2943 std::string lowerCase = Tok.getString().lower();
2944 ARM_AM::ShiftOpc ShiftTy = StringSwitch<ARM_AM::ShiftOpc>(lowerCase)
2945 .Case("asl", ARM_AM::lsl)
2946 .Case("lsl", ARM_AM::lsl)
2947 .Case("lsr", ARM_AM::lsr)
2948 .Case("asr", ARM_AM::asr)
2949 .Case("ror", ARM_AM::ror)
2950 .Case("rrx", ARM_AM::rrx)
2951 .Default(ARM_AM::no_shift);
2953 if (ShiftTy == ARM_AM::no_shift)
2956 Parser.Lex(); // Eat the operator.
2958 // The source register for the shift has already been added to the
2959 // operand list, so we need to pop it off and combine it into the shifted
2960 // register operand instead.
2961 std::unique_ptr<ARMOperand> PrevOp(
2962 (ARMOperand *)Operands.pop_back_val().release());
2963 if (!PrevOp->isReg())
2964 return Error(PrevOp->getStartLoc(), "shift must be of a register");
2965 int SrcReg = PrevOp->getReg();
2970 if (ShiftTy == ARM_AM::rrx) {
2971 // RRX Doesn't have an explicit shift amount. The encoder expects
2972 // the shift register to be the same as the source register. Seems odd,
2976 // Figure out if this is shifted by a constant or a register (for non-RRX).
2977 if (Parser.getTok().is(AsmToken::Hash) ||
2978 Parser.getTok().is(AsmToken::Dollar)) {
2979 Parser.Lex(); // Eat hash.
2980 SMLoc ImmLoc = Parser.getTok().getLoc();
2981 const MCExpr *ShiftExpr = nullptr;
2982 if (getParser().parseExpression(ShiftExpr, EndLoc)) {
2983 Error(ImmLoc, "invalid immediate shift value");
2986 // The expression must be evaluatable as an immediate.
2987 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(ShiftExpr);
2989 Error(ImmLoc, "invalid immediate shift value");
2992 // Range check the immediate.
2993 // lsl, ror: 0 <= imm <= 31
2994 // lsr, asr: 0 <= imm <= 32
2995 Imm = CE->getValue();
2997 ((ShiftTy == ARM_AM::lsl || ShiftTy == ARM_AM::ror) && Imm > 31) ||
2998 ((ShiftTy == ARM_AM::lsr || ShiftTy == ARM_AM::asr) && Imm > 32)) {
2999 Error(ImmLoc, "immediate shift value out of range");
3002 // shift by zero is a nop. Always send it through as lsl.
3003 // ('as' compatibility)
3005 ShiftTy = ARM_AM::lsl;
3006 } else if (Parser.getTok().is(AsmToken::Identifier)) {
3007 SMLoc L = Parser.getTok().getLoc();
3008 EndLoc = Parser.getTok().getEndLoc();
3009 ShiftReg = tryParseRegister();
3010 if (ShiftReg == -1) {
3011 Error(L, "expected immediate or register in shift operand");
3015 Error(Parser.getTok().getLoc(),
3016 "expected immediate or register in shift operand");
3021 if (ShiftReg && ShiftTy != ARM_AM::rrx)
3022 Operands.push_back(ARMOperand::CreateShiftedRegister(ShiftTy, SrcReg,
3026 Operands.push_back(ARMOperand::CreateShiftedImmediate(ShiftTy, SrcReg, Imm,
3033 /// Try to parse a register name. The token must be an Identifier when called.
3034 /// If it's a register, an AsmOperand is created. Another AsmOperand is created
3035 /// if there is a "writeback". 'true' if it's not a register.
3037 /// TODO this is likely to change to allow different register types and or to
3038 /// parse for a specific register type.
3039 bool ARMAsmParser::tryParseRegisterWithWriteBack(OperandVector &Operands) {
3040 const AsmToken &RegTok = Parser.getTok();
3041 int RegNo = tryParseRegister();
3045 Operands.push_back(ARMOperand::CreateReg(RegNo, RegTok.getLoc(),
3046 RegTok.getEndLoc()));
3048 const AsmToken &ExclaimTok = Parser.getTok();
3049 if (ExclaimTok.is(AsmToken::Exclaim)) {
3050 Operands.push_back(ARMOperand::CreateToken(ExclaimTok.getString(),
3051 ExclaimTok.getLoc()));
3052 Parser.Lex(); // Eat exclaim token
3056 // Also check for an index operand. This is only legal for vector registers,
3057 // but that'll get caught OK in operand matching, so we don't need to
3058 // explicitly filter everything else out here.
3059 if (Parser.getTok().is(AsmToken::LBrac)) {
3060 SMLoc SIdx = Parser.getTok().getLoc();
3061 Parser.Lex(); // Eat left bracket token.
3063 const MCExpr *ImmVal;
3064 if (getParser().parseExpression(ImmVal))
3066 const MCConstantExpr *MCE = dyn_cast<MCConstantExpr>(ImmVal);
3068 return TokError("immediate value expected for vector index");
3070 if (Parser.getTok().isNot(AsmToken::RBrac))
3071 return Error(Parser.getTok().getLoc(), "']' expected");
3073 SMLoc E = Parser.getTok().getEndLoc();
3074 Parser.Lex(); // Eat right bracket token.
3076 Operands.push_back(ARMOperand::CreateVectorIndex(MCE->getValue(),
3084 /// MatchCoprocessorOperandName - Try to parse an coprocessor related
3085 /// instruction with a symbolic operand name.
3086 /// We accept "crN" syntax for GAS compatibility.
3087 /// <operand-name> ::= <prefix><number>
3088 /// If CoprocOp is 'c', then:
3089 /// <prefix> ::= c | cr
3090 /// If CoprocOp is 'p', then :
3092 /// <number> ::= integer in range [0, 15]
3093 static int MatchCoprocessorOperandName(StringRef Name, char CoprocOp) {
3094 // Use the same layout as the tablegen'erated register name matcher. Ugly,
3096 if (Name.size() < 2 || Name[0] != CoprocOp)
3098 Name = (Name[1] == 'r') ? Name.drop_front(2) : Name.drop_front();
3100 switch (Name.size()) {
3121 // CP10 and CP11 are VFP/NEON and so vector instructions should be used.
3122 // However, old cores (v5/v6) did use them in that way.
3123 case '0': return 10;
3124 case '1': return 11;
3125 case '2': return 12;
3126 case '3': return 13;
3127 case '4': return 14;
3128 case '5': return 15;
3133 /// parseITCondCode - Try to parse a condition code for an IT instruction.
3134 ARMAsmParser::OperandMatchResultTy
3135 ARMAsmParser::parseITCondCode(OperandVector &Operands) {
3136 SMLoc S = Parser.getTok().getLoc();
3137 const AsmToken &Tok = Parser.getTok();
3138 if (!Tok.is(AsmToken::Identifier))
3139 return MatchOperand_NoMatch;
3140 unsigned CC = StringSwitch<unsigned>(Tok.getString().lower())
3141 .Case("eq", ARMCC::EQ)
3142 .Case("ne", ARMCC::NE)
3143 .Case("hs", ARMCC::HS)
3144 .Case("cs", ARMCC::HS)
3145 .Case("lo", ARMCC::LO)
3146 .Case("cc", ARMCC::LO)
3147 .Case("mi", ARMCC::MI)
3148 .Case("pl", ARMCC::PL)
3149 .Case("vs", ARMCC::VS)
3150 .Case("vc", ARMCC::VC)
3151 .Case("hi", ARMCC::HI)
3152 .Case("ls", ARMCC::LS)
3153 .Case("ge", ARMCC::GE)
3154 .Case("lt", ARMCC::LT)
3155 .Case("gt", ARMCC::GT)
3156 .Case("le", ARMCC::LE)
3157 .Case("al", ARMCC::AL)
3160 return MatchOperand_NoMatch;
3161 Parser.Lex(); // Eat the token.
3163 Operands.push_back(ARMOperand::CreateCondCode(ARMCC::CondCodes(CC), S));
3165 return MatchOperand_Success;
3168 /// parseCoprocNumOperand - Try to parse an coprocessor number operand. The
3169 /// token must be an Identifier when called, and if it is a coprocessor
3170 /// number, the token is eaten and the operand is added to the operand list.
3171 ARMAsmParser::OperandMatchResultTy
3172 ARMAsmParser::parseCoprocNumOperand(OperandVector &Operands) {
3173 SMLoc S = Parser.getTok().getLoc();
3174 const AsmToken &Tok = Parser.getTok();
3175 if (Tok.isNot(AsmToken::Identifier))
3176 return MatchOperand_NoMatch;
3178 int Num = MatchCoprocessorOperandName(Tok.getString(), 'p');
3180 return MatchOperand_NoMatch;
3181 // ARMv7 and v8 don't allow cp10/cp11 due to VFP/NEON specific instructions
3182 if ((hasV7Ops() || hasV8Ops()) && (Num == 10 || Num == 11))
3183 return MatchOperand_NoMatch;
3185 Parser.Lex(); // Eat identifier token.
3186 Operands.push_back(ARMOperand::CreateCoprocNum(Num, S));
3187 return MatchOperand_Success;
3190 /// parseCoprocRegOperand - Try to parse an coprocessor register operand. The
3191 /// token must be an Identifier when called, and if it is a coprocessor
3192 /// number, the token is eaten and the operand is added to the operand list.
3193 ARMAsmParser::OperandMatchResultTy
3194 ARMAsmParser::parseCoprocRegOperand(OperandVector &Operands) {
3195 SMLoc S = Parser.getTok().getLoc();
3196 const AsmToken &Tok = Parser.getTok();
3197 if (Tok.isNot(AsmToken::Identifier))
3198 return MatchOperand_NoMatch;
3200 int Reg = MatchCoprocessorOperandName(Tok.getString(), 'c');
3202 return MatchOperand_NoMatch;
3204 Parser.Lex(); // Eat identifier token.
3205 Operands.push_back(ARMOperand::CreateCoprocReg(Reg, S));
3206 return MatchOperand_Success;
3209 /// parseCoprocOptionOperand - Try to parse an coprocessor option operand.
3210 /// coproc_option : '{' imm0_255 '}'
3211 ARMAsmParser::OperandMatchResultTy
3212 ARMAsmParser::parseCoprocOptionOperand(OperandVector &Operands) {
3213 SMLoc S = Parser.getTok().getLoc();
3215 // If this isn't a '{', this isn't a coprocessor immediate operand.
3216 if (Parser.getTok().isNot(AsmToken::LCurly))
3217 return MatchOperand_NoMatch;
3218 Parser.Lex(); // Eat the '{'
3221 SMLoc Loc = Parser.getTok().getLoc();
3222 if (getParser().parseExpression(Expr)) {
3223 Error(Loc, "illegal expression");
3224 return MatchOperand_ParseFail;
3226 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(Expr);
3227 if (!CE || CE->getValue() < 0 || CE->getValue() > 255) {
3228 Error(Loc, "coprocessor option must be an immediate in range [0, 255]");
3229 return MatchOperand_ParseFail;
3231 int Val = CE->getValue();
3233 // Check for and consume the closing '}'
3234 if (Parser.getTok().isNot(AsmToken::RCurly))
3235 return MatchOperand_ParseFail;
3236 SMLoc E = Parser.getTok().getEndLoc();
3237 Parser.Lex(); // Eat the '}'
3239 Operands.push_back(ARMOperand::CreateCoprocOption(Val, S, E));
3240 return MatchOperand_Success;
3243 // For register list parsing, we need to map from raw GPR register numbering
3244 // to the enumeration values. The enumeration values aren't sorted by
3245 // register number due to our using "sp", "lr" and "pc" as canonical names.
3246 static unsigned getNextRegister(unsigned Reg) {
3247 // If this is a GPR, we need to do it manually, otherwise we can rely
3248 // on the sort ordering of the enumeration since the other reg-classes
3250 if (!ARMMCRegisterClasses[ARM::GPRRegClassID].contains(Reg))
3253 default: llvm_unreachable("Invalid GPR number!");
3254 case ARM::R0: return ARM::R1; case ARM::R1: return ARM::R2;
3255 case ARM::R2: return ARM::R3; case ARM::R3: return ARM::R4;
3256 case ARM::R4: return ARM::R5; case ARM::R5: return ARM::R6;
3257 case ARM::R6: return ARM::R7; case ARM::R7: return ARM::R8;
3258 case ARM::R8: return ARM::R9; case ARM::R9: return ARM::R10;
3259 case ARM::R10: return ARM::R11; case ARM::R11: return ARM::R12;
3260 case ARM::R12: return ARM::SP; case ARM::SP: return ARM::LR;
3261 case ARM::LR: return ARM::PC; case ARM::PC: return ARM::R0;
3265 // Return the low-subreg of a given Q register.
3266 static unsigned getDRegFromQReg(unsigned QReg) {
3268 default: llvm_unreachable("expected a Q register!");
3269 case ARM::Q0: return ARM::D0;
3270 case ARM::Q1: return ARM::D2;
3271 case ARM::Q2: return ARM::D4;
3272 case ARM::Q3: return ARM::D6;
3273 case ARM::Q4: return ARM::D8;
3274 case ARM::Q5: return ARM::D10;
3275 case ARM::Q6: return ARM::D12;
3276 case ARM::Q7: return ARM::D14;
3277 case ARM::Q8: return ARM::D16;
3278 case ARM::Q9: return ARM::D18;
3279 case ARM::Q10: return ARM::D20;
3280 case ARM::Q11: return ARM::D22;
3281 case ARM::Q12: return ARM::D24;
3282 case ARM::Q13: return ARM::D26;
3283 case ARM::Q14: return ARM::D28;
3284 case ARM::Q15: return ARM::D30;
3288 /// Parse a register list.
3289 bool ARMAsmParser::parseRegisterList(OperandVector &Operands) {
3290 assert(Parser.getTok().is(AsmToken::LCurly) &&
3291 "Token is not a Left Curly Brace");
3292 SMLoc S = Parser.getTok().getLoc();
3293 Parser.Lex(); // Eat '{' token.
3294 SMLoc RegLoc = Parser.getTok().getLoc();
3296 // Check the first register in the list to see what register class
3297 // this is a list of.
3298 int Reg = tryParseRegister();
3300 return Error(RegLoc, "register expected");
3302 // The reglist instructions have at most 16 registers, so reserve
3303 // space for that many.
3305 SmallVector<std::pair<unsigned, unsigned>, 16> Registers;
3307 // Allow Q regs and just interpret them as the two D sub-registers.
3308 if (ARMMCRegisterClasses[ARM::QPRRegClassID].contains(Reg)) {
3309 Reg = getDRegFromQReg(Reg);
3310 EReg = MRI->getEncodingValue(Reg);
3311 Registers.push_back(std::pair<unsigned, unsigned>(EReg, Reg));
3314 const MCRegisterClass *RC;
3315 if (ARMMCRegisterClasses[ARM::GPRRegClassID].contains(Reg))
3316 RC = &ARMMCRegisterClasses[ARM::GPRRegClassID];
3317 else if (ARMMCRegisterClasses[ARM::DPRRegClassID].contains(Reg))
3318 RC = &ARMMCRegisterClasses[ARM::DPRRegClassID];
3319 else if (ARMMCRegisterClasses[ARM::SPRRegClassID].contains(Reg))
3320 RC = &ARMMCRegisterClasses[ARM::SPRRegClassID];
3322 return Error(RegLoc, "invalid register in register list");
3324 // Store the register.
3325 EReg = MRI->getEncodingValue(Reg);
3326 Registers.push_back(std::pair<unsigned, unsigned>(EReg, Reg));
3328 // This starts immediately after the first register token in the list,
3329 // so we can see either a comma or a minus (range separator) as a legal
3331 while (Parser.getTok().is(AsmToken::Comma) ||
3332 Parser.getTok().is(AsmToken::Minus)) {
3333 if (Parser.getTok().is(AsmToken::Minus)) {
3334 Parser.Lex(); // Eat the minus.
3335 SMLoc AfterMinusLoc = Parser.getTok().getLoc();
3336 int EndReg = tryParseRegister();
3338 return Error(AfterMinusLoc, "register expected");
3339 // Allow Q regs and just interpret them as the two D sub-registers.
3340 if (ARMMCRegisterClasses[ARM::QPRRegClassID].contains(EndReg))
3341 EndReg = getDRegFromQReg(EndReg) + 1;
3342 // If the register is the same as the start reg, there's nothing
3346 // The register must be in the same register class as the first.
3347 if (!RC->contains(EndReg))
3348 return Error(AfterMinusLoc, "invalid register in register list");
3349 // Ranges must go from low to high.
3350 if (MRI->getEncodingValue(Reg) > MRI->getEncodingValue(EndReg))
3351 return Error(AfterMinusLoc, "bad range in register list");
3353 // Add all the registers in the range to the register list.
3354 while (Reg != EndReg) {
3355 Reg = getNextRegister(Reg);
3356 EReg = MRI->getEncodingValue(Reg);
3357 Registers.push_back(std::pair<unsigned, unsigned>(EReg, Reg));
3361 Parser.Lex(); // Eat the comma.
3362 RegLoc = Parser.getTok().getLoc();
3364 const AsmToken RegTok = Parser.getTok();
3365 Reg = tryParseRegister();
3367 return Error(RegLoc, "register expected");
3368 // Allow Q regs and just interpret them as the two D sub-registers.
3369 bool isQReg = false;
3370 if (ARMMCRegisterClasses[ARM::QPRRegClassID].contains(Reg)) {
3371 Reg = getDRegFromQReg(Reg);
3374 // The register must be in the same register class as the first.
3375 if (!RC->contains(Reg))
3376 return Error(RegLoc, "invalid register in register list");
3377 // List must be monotonically increasing.
3378 if (MRI->getEncodingValue(Reg) < MRI->getEncodingValue(OldReg)) {
3379 if (ARMMCRegisterClasses[ARM::GPRRegClassID].contains(Reg))
3380 Warning(RegLoc, "register list not in ascending order");
3382 return Error(RegLoc, "register list not in ascending order");
3384 if (MRI->getEncodingValue(Reg) == MRI->getEncodingValue(OldReg)) {
3385 Warning(RegLoc, "duplicated register (" + RegTok.getString() +
3386 ") in register list");
3389 // VFP register lists must also be contiguous.
3390 if (RC != &ARMMCRegisterClasses[ARM::GPRRegClassID] &&
3392 return Error(RegLoc, "non-contiguous register range");
3393 EReg = MRI->getEncodingValue(Reg);
3394 Registers.push_back(std::pair<unsigned, unsigned>(EReg, Reg));
3396 EReg = MRI->getEncodingValue(++Reg);
3397 Registers.push_back(std::pair<unsigned, unsigned>(EReg, Reg));
3401 if (Parser.getTok().isNot(AsmToken::RCurly))
3402 return Error(Parser.getTok().getLoc(), "'}' expected");
3403 SMLoc E = Parser.getTok().getEndLoc();
3404 Parser.Lex(); // Eat '}' token.
3406 // Push the register list operand.
3407 Operands.push_back(ARMOperand::CreateRegList(Registers, S, E));
3409 // The ARM system instruction variants for LDM/STM have a '^' token here.
3410 if (Parser.getTok().is(AsmToken::Caret)) {
3411 Operands.push_back(ARMOperand::CreateToken("^",Parser.getTok().getLoc()));
3412 Parser.Lex(); // Eat '^' token.
3418 // Helper function to parse the lane index for vector lists.
3419 ARMAsmParser::OperandMatchResultTy ARMAsmParser::
3420 parseVectorLane(VectorLaneTy &LaneKind, unsigned &Index, SMLoc &EndLoc) {
3421 Index = 0; // Always return a defined index value.
3422 if (Parser.getTok().is(AsmToken::LBrac)) {
3423 Parser.Lex(); // Eat the '['.
3424 if (Parser.getTok().is(AsmToken::RBrac)) {
3425 // "Dn[]" is the 'all lanes' syntax.
3426 LaneKind = AllLanes;
3427 EndLoc = Parser.getTok().getEndLoc();
3428 Parser.Lex(); // Eat the ']'.
3429 return MatchOperand_Success;
3432 // There's an optional '#' token here. Normally there wouldn't be, but
3433 // inline assemble puts one in, and it's friendly to accept that.
3434 if (Parser.getTok().is(AsmToken::Hash))
3435 Parser.Lex(); // Eat '#' or '$'.
3437 const MCExpr *LaneIndex;
3438 SMLoc Loc = Parser.getTok().getLoc();
3439 if (getParser().parseExpression(LaneIndex)) {
3440 Error(Loc, "illegal expression");
3441 return MatchOperand_ParseFail;
3443 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(LaneIndex);
3445 Error(Loc, "lane index must be empty or an integer");
3446 return MatchOperand_ParseFail;
3448 if (Parser.getTok().isNot(AsmToken::RBrac)) {
3449 Error(Parser.getTok().getLoc(), "']' expected");
3450 return MatchOperand_ParseFail;
3452 EndLoc = Parser.getTok().getEndLoc();
3453 Parser.Lex(); // Eat the ']'.
3454 int64_t Val = CE->getValue();
3456 // FIXME: Make this range check context sensitive for .8, .16, .32.
3457 if (Val < 0 || Val > 7) {
3458 Error(Parser.getTok().getLoc(), "lane index out of range");
3459 return MatchOperand_ParseFail;
3462 LaneKind = IndexedLane;
3463 return MatchOperand_Success;
3466 return MatchOperand_Success;
3469 // parse a vector register list
3470 ARMAsmParser::OperandMatchResultTy
3471 ARMAsmParser::parseVectorList(OperandVector &Operands) {
3472 VectorLaneTy LaneKind;
3474 SMLoc S = Parser.getTok().getLoc();
3475 // As an extension (to match gas), support a plain D register or Q register
3476 // (without encosing curly braces) as a single or double entry list,
3478 if (Parser.getTok().is(AsmToken::Identifier)) {
3479 SMLoc E = Parser.getTok().getEndLoc();
3480 int Reg = tryParseRegister();
3482 return MatchOperand_NoMatch;
3483 if (ARMMCRegisterClasses[ARM::DPRRegClassID].contains(Reg)) {
3484 OperandMatchResultTy Res = parseVectorLane(LaneKind, LaneIndex, E);
3485 if (Res != MatchOperand_Success)
3489 Operands.push_back(ARMOperand::CreateVectorList(Reg, 1, false, S, E));
3492 Operands.push_back(ARMOperand::CreateVectorListAllLanes(Reg, 1, false,
3496 Operands.push_back(ARMOperand::CreateVectorListIndexed(Reg, 1,
3501 return MatchOperand_Success;
3503 if (ARMMCRegisterClasses[ARM::QPRRegClassID].contains(Reg)) {
3504 Reg = getDRegFromQReg(Reg);
3505 OperandMatchResultTy Res = parseVectorLane(LaneKind, LaneIndex, E);
3506 if (Res != MatchOperand_Success)
3510 Reg = MRI->getMatchingSuperReg(Reg, ARM::dsub_0,
3511 &ARMMCRegisterClasses[ARM::DPairRegClassID]);
3512 Operands.push_back(ARMOperand::CreateVectorList(Reg, 2, false, S, E));
3515 Reg = MRI->getMatchingSuperReg(Reg, ARM::dsub_0,
3516 &ARMMCRegisterClasses[ARM::DPairRegClassID]);
3517 Operands.push_back(ARMOperand::CreateVectorListAllLanes(Reg, 2, false,
3521 Operands.push_back(ARMOperand::CreateVectorListIndexed(Reg, 2,
3526 return MatchOperand_Success;
3528 Error(S, "vector register expected");
3529 return MatchOperand_ParseFail;
3532 if (Parser.getTok().isNot(AsmToken::LCurly))
3533 return MatchOperand_NoMatch;
3535 Parser.Lex(); // Eat '{' token.
3536 SMLoc RegLoc = Parser.getTok().getLoc();
3538 int Reg = tryParseRegister();
3540 Error(RegLoc, "register expected");
3541 return MatchOperand_ParseFail;
3545 unsigned FirstReg = Reg;
3546 // The list is of D registers, but we also allow Q regs and just interpret
3547 // them as the two D sub-registers.
3548 if (ARMMCRegisterClasses[ARM::QPRRegClassID].contains(Reg)) {
3549 FirstReg = Reg = getDRegFromQReg(Reg);
3550 Spacing = 1; // double-spacing requires explicit D registers, otherwise
3551 // it's ambiguous with four-register single spaced.
3557 if (parseVectorLane(LaneKind, LaneIndex, E) != MatchOperand_Success)
3558 return MatchOperand_ParseFail;
3560 while (Parser.getTok().is(AsmToken::Comma) ||
3561 Parser.getTok().is(AsmToken::Minus)) {
3562 if (Parser.getTok().is(AsmToken::Minus)) {
3564 Spacing = 1; // Register range implies a single spaced list.
3565 else if (Spacing == 2) {
3566 Error(Parser.getTok().getLoc(),
3567 "sequential registers in double spaced list");
3568 return MatchOperand_ParseFail;
3570 Parser.Lex(); // Eat the minus.
3571 SMLoc AfterMinusLoc = Parser.getTok().getLoc();
3572 int EndReg = tryParseRegister();
3574 Error(AfterMinusLoc, "register expected");
3575 return MatchOperand_ParseFail;
3577 // Allow Q regs and just interpret them as the two D sub-registers.
3578 if (ARMMCRegisterClasses[ARM::QPRRegClassID].contains(EndReg))
3579 EndReg = getDRegFromQReg(EndReg) + 1;
3580 // If the register is the same as the start reg, there's nothing
3584 // The register must be in the same register class as the first.
3585 if (!ARMMCRegisterClasses[ARM::DPRRegClassID].contains(EndReg)) {
3586 Error(AfterMinusLoc, "invalid register in register list");
3587 return MatchOperand_ParseFail;
3589 // Ranges must go from low to high.
3591 Error(AfterMinusLoc, "bad range in register list");
3592 return MatchOperand_ParseFail;
3594 // Parse the lane specifier if present.
3595 VectorLaneTy NextLaneKind;
3596 unsigned NextLaneIndex;
3597 if (parseVectorLane(NextLaneKind, NextLaneIndex, E) !=
3598 MatchOperand_Success)
3599 return MatchOperand_ParseFail;
3600 if (NextLaneKind != LaneKind || LaneIndex != NextLaneIndex) {
3601 Error(AfterMinusLoc, "mismatched lane index in register list");
3602 return MatchOperand_ParseFail;
3605 // Add all the registers in the range to the register list.
3606 Count += EndReg - Reg;
3610 Parser.Lex(); // Eat the comma.
3611 RegLoc = Parser.getTok().getLoc();
3613 Reg = tryParseRegister();
3615 Error(RegLoc, "register expected");
3616 return MatchOperand_ParseFail;
3618 // vector register lists must be contiguous.
3619 // It's OK to use the enumeration values directly here rather, as the
3620 // VFP register classes have the enum sorted properly.
3622 // The list is of D registers, but we also allow Q regs and just interpret
3623 // them as the two D sub-registers.
3624 if (ARMMCRegisterClasses[ARM::QPRRegClassID].contains(Reg)) {
3626 Spacing = 1; // Register range implies a single spaced list.
3627 else if (Spacing == 2) {
3629 "invalid register in double-spaced list (must be 'D' register')");
3630 return MatchOperand_ParseFail;
3632 Reg = getDRegFromQReg(Reg);
3633 if (Reg != OldReg + 1) {
3634 Error(RegLoc, "non-contiguous register range");
3635 return MatchOperand_ParseFail;
3639 // Parse the lane specifier if present.
3640 VectorLaneTy NextLaneKind;
3641 unsigned NextLaneIndex;
3642 SMLoc LaneLoc = Parser.getTok().getLoc();
3643 if (parseVectorLane(NextLaneKind, NextLaneIndex, E) !=
3644 MatchOperand_Success)
3645 return MatchOperand_ParseFail;
3646 if (NextLaneKind != LaneKind || LaneIndex != NextLaneIndex) {
3647 Error(LaneLoc, "mismatched lane index in register list");
3648 return MatchOperand_ParseFail;
3652 // Normal D register.
3653 // Figure out the register spacing (single or double) of the list if
3654 // we don't know it already.
3656 Spacing = 1 + (Reg == OldReg + 2);
3658 // Just check that it's contiguous and keep going.
3659 if (Reg != OldReg + Spacing) {
3660 Error(RegLoc, "non-contiguous register range");
3661 return MatchOperand_ParseFail;
3664 // Parse the lane specifier if present.
3665 VectorLaneTy NextLaneKind;
3666 unsigned NextLaneIndex;
3667 SMLoc EndLoc = Parser.getTok().getLoc();
3668 if (parseVectorLane(NextLaneKind, NextLaneIndex, E) != MatchOperand_Success)
3669 return MatchOperand_ParseFail;
3670 if (NextLaneKind != LaneKind || LaneIndex != NextLaneIndex) {
3671 Error(EndLoc, "mismatched lane index in register list");
3672 return MatchOperand_ParseFail;
3676 if (Parser.getTok().isNot(AsmToken::RCurly)) {
3677 Error(Parser.getTok().getLoc(), "'}' expected");
3678 return MatchOperand_ParseFail;
3680 E = Parser.getTok().getEndLoc();
3681 Parser.Lex(); // Eat '}' token.
3685 // Two-register operands have been converted to the
3686 // composite register classes.
3688 const MCRegisterClass *RC = (Spacing == 1) ?
3689 &ARMMCRegisterClasses[ARM::DPairRegClassID] :
3690 &ARMMCRegisterClasses[ARM::DPairSpcRegClassID];
3691 FirstReg = MRI->getMatchingSuperReg(FirstReg, ARM::dsub_0, RC);
3694 Operands.push_back(ARMOperand::CreateVectorList(FirstReg, Count,
3695 (Spacing == 2), S, E));
3698 // Two-register operands have been converted to the
3699 // composite register classes.
3701 const MCRegisterClass *RC = (Spacing == 1) ?
3702 &ARMMCRegisterClasses[ARM::DPairRegClassID] :
3703 &ARMMCRegisterClasses[ARM::DPairSpcRegClassID];
3704 FirstReg = MRI->getMatchingSuperReg(FirstReg, ARM::dsub_0, RC);
3706 Operands.push_back(ARMOperand::CreateVectorListAllLanes(FirstReg, Count,
3711 Operands.push_back(ARMOperand::CreateVectorListIndexed(FirstReg, Count,
3717 return MatchOperand_Success;
3720 /// parseMemBarrierOptOperand - Try to parse DSB/DMB data barrier options.
3721 ARMAsmParser::OperandMatchResultTy
3722 ARMAsmParser::parseMemBarrierOptOperand(OperandVector &Operands) {
3723 SMLoc S = Parser.getTok().getLoc();
3724 const AsmToken &Tok = Parser.getTok();
3727 if (Tok.is(AsmToken::Identifier)) {
3728 StringRef OptStr = Tok.getString();
3730 Opt = StringSwitch<unsigned>(OptStr.slice(0, OptStr.size()).lower())
3731 .Case("sy", ARM_MB::SY)
3732 .Case("st", ARM_MB::ST)
3733 .Case("ld", ARM_MB::LD)
3734 .Case("sh", ARM_MB::ISH)
3735 .Case("ish", ARM_MB::ISH)
3736 .Case("shst", ARM_MB::ISHST)
3737 .Case("ishst", ARM_MB::ISHST)
3738 .Case("ishld", ARM_MB::ISHLD)
3739 .Case("nsh", ARM_MB::NSH)
3740 .Case("un", ARM_MB::NSH)
3741 .Case("nshst", ARM_MB::NSHST)
3742 .Case("nshld", ARM_MB::NSHLD)
3743 .Case("unst", ARM_MB::NSHST)
3744 .Case("osh", ARM_MB::OSH)
3745 .Case("oshst", ARM_MB::OSHST)
3746 .Case("oshld", ARM_MB::OSHLD)
3749 // ishld, oshld, nshld and ld are only available from ARMv8.
3750 if (!hasV8Ops() && (Opt == ARM_MB::ISHLD || Opt == ARM_MB::OSHLD ||
3751 Opt == ARM_MB::NSHLD || Opt == ARM_MB::LD))
3755 return MatchOperand_NoMatch;
3757 Parser.Lex(); // Eat identifier token.
3758 } else if (Tok.is(AsmToken::Hash) ||
3759 Tok.is(AsmToken::Dollar) ||
3760 Tok.is(AsmToken::Integer)) {
3761 if (Parser.getTok().isNot(AsmToken::Integer))
3762 Parser.Lex(); // Eat '#' or '$'.
3763 SMLoc Loc = Parser.getTok().getLoc();
3765 const MCExpr *MemBarrierID;
3766 if (getParser().parseExpression(MemBarrierID)) {
3767 Error(Loc, "illegal expression");
3768 return MatchOperand_ParseFail;
3771 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(MemBarrierID);
3773 Error(Loc, "constant expression expected");
3774 return MatchOperand_ParseFail;
3777 int Val = CE->getValue();
3779 Error(Loc, "immediate value out of range");
3780 return MatchOperand_ParseFail;
3783 Opt = ARM_MB::RESERVED_0 + Val;
3785 return MatchOperand_ParseFail;
3787 Operands.push_back(ARMOperand::CreateMemBarrierOpt((ARM_MB::MemBOpt)Opt, S));
3788 return MatchOperand_Success;
3791 /// parseInstSyncBarrierOptOperand - Try to parse ISB inst sync barrier options.
3792 ARMAsmParser::OperandMatchResultTy
3793 ARMAsmParser::parseInstSyncBarrierOptOperand(OperandVector &Operands) {
3794 SMLoc S = Parser.getTok().getLoc();
3795 const AsmToken &Tok = Parser.getTok();
3798 if (Tok.is(AsmToken::Identifier)) {
3799 StringRef OptStr = Tok.getString();
3801 if (OptStr.equals_lower("sy"))
3804 return MatchOperand_NoMatch;
3806 Parser.Lex(); // Eat identifier token.
3807 } else if (Tok.is(AsmToken::Hash) ||
3808 Tok.is(AsmToken::Dollar) ||
3809 Tok.is(AsmToken::Integer)) {
3810 if (Parser.getTok().isNot(AsmToken::Integer))
3811 Parser.Lex(); // Eat '#' or '$'.
3812 SMLoc Loc = Parser.getTok().getLoc();
3814 const MCExpr *ISBarrierID;
3815 if (getParser().parseExpression(ISBarrierID)) {
3816 Error(Loc, "illegal expression");
3817 return MatchOperand_ParseFail;
3820 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(ISBarrierID);
3822 Error(Loc, "constant expression expected");
3823 return MatchOperand_ParseFail;
3826 int Val = CE->getValue();
3828 Error(Loc, "immediate value out of range");
3829 return MatchOperand_ParseFail;
3832 Opt = ARM_ISB::RESERVED_0 + Val;
3834 return MatchOperand_ParseFail;
3836 Operands.push_back(ARMOperand::CreateInstSyncBarrierOpt(
3837 (ARM_ISB::InstSyncBOpt)Opt, S));
3838 return MatchOperand_Success;
3842 /// parseProcIFlagsOperand - Try to parse iflags from CPS instruction.
3843 ARMAsmParser::OperandMatchResultTy
3844 ARMAsmParser::parseProcIFlagsOperand(OperandVector &Operands) {
3845 SMLoc S = Parser.getTok().getLoc();
3846 const AsmToken &Tok = Parser.getTok();
3847 if (!Tok.is(AsmToken::Identifier))
3848 return MatchOperand_NoMatch;
3849 StringRef IFlagsStr = Tok.getString();
3851 // An iflags string of "none" is interpreted to mean that none of the AIF
3852 // bits are set. Not a terribly useful instruction, but a valid encoding.
3853 unsigned IFlags = 0;
3854 if (IFlagsStr != "none") {
3855 for (int i = 0, e = IFlagsStr.size(); i != e; ++i) {
3856 unsigned Flag = StringSwitch<unsigned>(IFlagsStr.substr(i, 1))
3857 .Case("a", ARM_PROC::A)
3858 .Case("i", ARM_PROC::I)
3859 .Case("f", ARM_PROC::F)
3862 // If some specific iflag is already set, it means that some letter is
3863 // present more than once, this is not acceptable.
3864 if (Flag == ~0U || (IFlags & Flag))
3865 return MatchOperand_NoMatch;
3871 Parser.Lex(); // Eat identifier token.
3872 Operands.push_back(ARMOperand::CreateProcIFlags((ARM_PROC::IFlags)IFlags, S));
3873 return MatchOperand_Success;
3876 /// parseMSRMaskOperand - Try to parse mask flags from MSR instruction.
3877 ARMAsmParser::OperandMatchResultTy
3878 ARMAsmParser::parseMSRMaskOperand(OperandVector &Operands) {
3879 SMLoc S = Parser.getTok().getLoc();
3880 const AsmToken &Tok = Parser.getTok();
3881 if (!Tok.is(AsmToken::Identifier))
3882 return MatchOperand_NoMatch;
3883 StringRef Mask = Tok.getString();
3886 // See ARMv6-M 10.1.1
3887 std::string Name = Mask.lower();
3888 unsigned FlagsVal = StringSwitch<unsigned>(Name)
3889 // Note: in the documentation:
3890 // ARM deprecates using MSR APSR without a _<bits> qualifier as an alias
3891 // for MSR APSR_nzcvq.
3892 // but we do make it an alias here. This is so to get the "mask encoding"
3893 // bits correct on MSR APSR writes.
3895 // FIXME: Note the 0xc00 "mask encoding" bits version of the registers
3896 // should really only be allowed when writing a special register. Note
3897 // they get dropped in the MRS instruction reading a special register as
3898 // the SYSm field is only 8 bits.
3900 // FIXME: the _g and _nzcvqg versions are only allowed if the processor
3901 // includes the DSP extension but that is not checked.
3902 .Case("apsr", 0x800)
3903 .Case("apsr_nzcvq", 0x800)
3904 .Case("apsr_g", 0x400)
3905 .Case("apsr_nzcvqg", 0xc00)
3906 .Case("iapsr", 0x801)
3907 .Case("iapsr_nzcvq", 0x801)
3908 .Case("iapsr_g", 0x401)
3909 .Case("iapsr_nzcvqg", 0xc01)
3910 .Case("eapsr", 0x802)
3911 .Case("eapsr_nzcvq", 0x802)
3912 .Case("eapsr_g", 0x402)
3913 .Case("eapsr_nzcvqg", 0xc02)
3914 .Case("xpsr", 0x803)
3915 .Case("xpsr_nzcvq", 0x803)
3916 .Case("xpsr_g", 0x403)
3917 .Case("xpsr_nzcvqg", 0xc03)
3918 .Case("ipsr", 0x805)
3919 .Case("epsr", 0x806)
3920 .Case("iepsr", 0x807)
3923 .Case("primask", 0x810)
3924 .Case("basepri", 0x811)
3925 .Case("basepri_max", 0x812)
3926 .Case("faultmask", 0x813)
3927 .Case("control", 0x814)
3930 if (FlagsVal == ~0U)
3931 return MatchOperand_NoMatch;
3933 if (!hasV7Ops() && FlagsVal >= 0x811 && FlagsVal <= 0x813)
3934 // basepri, basepri_max and faultmask only valid for V7m.
3935 return MatchOperand_NoMatch;
3937 Parser.Lex(); // Eat identifier token.
3938 Operands.push_back(ARMOperand::CreateMSRMask(FlagsVal, S));
3939 return MatchOperand_Success;
3942 // Split spec_reg from flag, example: CPSR_sxf => "CPSR" and "sxf"
3943 size_t Start = 0, Next = Mask.find('_');
3944 StringRef Flags = "";
3945 std::string SpecReg = Mask.slice(Start, Next).lower();
3946 if (Next != StringRef::npos)
3947 Flags = Mask.slice(Next+1, Mask.size());
3949 // FlagsVal contains the complete mask:
3951 // 4: Special Reg (cpsr, apsr => 0; spsr => 1)
3952 unsigned FlagsVal = 0;
3954 if (SpecReg == "apsr") {
3955 FlagsVal = StringSwitch<unsigned>(Flags)
3956 .Case("nzcvq", 0x8) // same as CPSR_f
3957 .Case("g", 0x4) // same as CPSR_s
3958 .Case("nzcvqg", 0xc) // same as CPSR_fs
3961 if (FlagsVal == ~0U) {
3963 return MatchOperand_NoMatch;
3965 FlagsVal = 8; // No flag
3967 } else if (SpecReg == "cpsr" || SpecReg == "spsr") {
3968 // cpsr_all is an alias for cpsr_fc, as is plain cpsr.
3969 if (Flags == "all" || Flags == "")
3971 for (int i = 0, e = Flags.size(); i != e; ++i) {
3972 unsigned Flag = StringSwitch<unsigned>(Flags.substr(i, 1))
3979 // If some specific flag is already set, it means that some letter is
3980 // present more than once, this is not acceptable.
3981 if (FlagsVal == ~0U || (FlagsVal & Flag))
3982 return MatchOperand_NoMatch;
3985 } else // No match for special register.
3986 return MatchOperand_NoMatch;
3988 // Special register without flags is NOT equivalent to "fc" flags.
3989 // NOTE: This is a divergence from gas' behavior. Uncommenting the following
3990 // two lines would enable gas compatibility at the expense of breaking
3996 // Bit 4: Special Reg (cpsr, apsr => 0; spsr => 1)
3997 if (SpecReg == "spsr")
4000 Parser.Lex(); // Eat identifier token.
4001 Operands.push_back(ARMOperand::CreateMSRMask(FlagsVal, S));
4002 return MatchOperand_Success;
4005 ARMAsmParser::OperandMatchResultTy
4006 ARMAsmParser::parsePKHImm(OperandVector &Operands, StringRef Op, int Low,
4008 const AsmToken &Tok = Parser.getTok();
4009 if (Tok.isNot(AsmToken::Identifier)) {
4010 Error(Parser.getTok().getLoc(), Op + " operand expected.");
4011 return MatchOperand_ParseFail;
4013 StringRef ShiftName = Tok.getString();
4014 std::string LowerOp = Op.lower();
4015 std::string UpperOp = Op.upper();
4016 if (ShiftName != LowerOp && ShiftName != UpperOp) {
4017 Error(Parser.getTok().getLoc(), Op + " operand expected.");
4018 return MatchOperand_ParseFail;
4020 Parser.Lex(); // Eat shift type token.
4022 // There must be a '#' and a shift amount.
4023 if (Parser.getTok().isNot(AsmToken::Hash) &&
4024 Parser.getTok().isNot(AsmToken::Dollar)) {
4025 Error(Parser.getTok().getLoc(), "'#' expected");
4026 return MatchOperand_ParseFail;
4028 Parser.Lex(); // Eat hash token.
4030 const MCExpr *ShiftAmount;
4031 SMLoc Loc = Parser.getTok().getLoc();
4033 if (getParser().parseExpression(ShiftAmount, EndLoc)) {
4034 Error(Loc, "illegal expression");
4035 return MatchOperand_ParseFail;
4037 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(ShiftAmount);
4039 Error(Loc, "constant expression expected");
4040 return MatchOperand_ParseFail;
4042 int Val = CE->getValue();
4043 if (Val < Low || Val > High) {
4044 Error(Loc, "immediate value out of range");
4045 return MatchOperand_ParseFail;
4048 Operands.push_back(ARMOperand::CreateImm(CE, Loc, EndLoc));
4050 return MatchOperand_Success;
4053 ARMAsmParser::OperandMatchResultTy
4054 ARMAsmParser::parseSetEndImm(OperandVector &Operands) {
4055 const AsmToken &Tok = Parser.getTok();
4056 SMLoc S = Tok.getLoc();
4057 if (Tok.isNot(AsmToken::Identifier)) {
4058 Error(S, "'be' or 'le' operand expected");
4059 return MatchOperand_ParseFail;
4061 int Val = StringSwitch<int>(Tok.getString().lower())
4065 Parser.Lex(); // Eat the token.
4068 Error(S, "'be' or 'le' operand expected");
4069 return MatchOperand_ParseFail;
4071 Operands.push_back(ARMOperand::CreateImm(MCConstantExpr::Create(Val,
4073 S, Tok.getEndLoc()));
4074 return MatchOperand_Success;
4077 /// parseShifterImm - Parse the shifter immediate operand for SSAT/USAT
4078 /// instructions. Legal values are:
4079 /// lsl #n 'n' in [0,31]
4080 /// asr #n 'n' in [1,32]
4081 /// n == 32 encoded as n == 0.
4082 ARMAsmParser::OperandMatchResultTy
4083 ARMAsmParser::parseShifterImm(OperandVector &Operands) {
4084 const AsmToken &Tok = Parser.getTok();
4085 SMLoc S = Tok.getLoc();
4086 if (Tok.isNot(AsmToken::Identifier)) {
4087 Error(S, "shift operator 'asr' or 'lsl' expected");
4088 return MatchOperand_ParseFail;
4090 StringRef ShiftName = Tok.getString();
4092 if (ShiftName == "lsl" || ShiftName == "LSL")
4094 else if (ShiftName == "asr" || ShiftName == "ASR")
4097 Error(S, "shift operator 'asr' or 'lsl' expected");
4098 return MatchOperand_ParseFail;
4100 Parser.Lex(); // Eat the operator.
4102 // A '#' and a shift amount.
4103 if (Parser.getTok().isNot(AsmToken::Hash) &&
4104 Parser.getTok().isNot(AsmToken::Dollar)) {
4105 Error(Parser.getTok().getLoc(), "'#' expected");
4106 return MatchOperand_ParseFail;
4108 Parser.Lex(); // Eat hash token.
4109 SMLoc ExLoc = Parser.getTok().getLoc();
4111 const MCExpr *ShiftAmount;
4113 if (getParser().parseExpression(ShiftAmount, EndLoc)) {
4114 Error(ExLoc, "malformed shift expression");
4115 return MatchOperand_ParseFail;
4117 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(ShiftAmount);
4119 Error(ExLoc, "shift amount must be an immediate");
4120 return MatchOperand_ParseFail;
4123 int64_t Val = CE->getValue();
4125 // Shift amount must be in [1,32]
4126 if (Val < 1 || Val > 32) {
4127 Error(ExLoc, "'asr' shift amount must be in range [1,32]");
4128 return MatchOperand_ParseFail;
4130 // asr #32 encoded as asr #0, but is not allowed in Thumb2 mode.
4131 if (isThumb() && Val == 32) {
4132 Error(ExLoc, "'asr #32' shift amount not allowed in Thumb mode");
4133 return MatchOperand_ParseFail;
4135 if (Val == 32) Val = 0;
4137 // Shift amount must be in [1,32]
4138 if (Val < 0 || Val > 31) {
4139 Error(ExLoc, "'lsr' shift amount must be in range [0,31]");
4140 return MatchOperand_ParseFail;
4144 Operands.push_back(ARMOperand::CreateShifterImm(isASR, Val, S, EndLoc));
4146 return MatchOperand_Success;
4149 /// parseRotImm - Parse the shifter immediate operand for SXTB/UXTB family
4150 /// of instructions. Legal values are:
4151 /// ror #n 'n' in {0, 8, 16, 24}
4152 ARMAsmParser::OperandMatchResultTy
4153 ARMAsmParser::parseRotImm(OperandVector &Operands) {
4154 const AsmToken &Tok = Parser.getTok();
4155 SMLoc S = Tok.getLoc();
4156 if (Tok.isNot(AsmToken::Identifier))
4157 return MatchOperand_NoMatch;
4158 StringRef ShiftName = Tok.getString();
4159 if (ShiftName != "ror" && ShiftName != "ROR")
4160 return MatchOperand_NoMatch;
4161 Parser.Lex(); // Eat the operator.
4163 // A '#' and a rotate amount.
4164 if (Parser.getTok().isNot(AsmToken::Hash) &&
4165 Parser.getTok().isNot(AsmToken::Dollar)) {
4166 Error(Parser.getTok().getLoc(), "'#' expected");
4167 return MatchOperand_ParseFail;
4169 Parser.Lex(); // Eat hash token.
4170 SMLoc ExLoc = Parser.getTok().getLoc();
4172 const MCExpr *ShiftAmount;
4174 if (getParser().parseExpression(ShiftAmount, EndLoc)) {
4175 Error(ExLoc, "malformed rotate expression");
4176 return MatchOperand_ParseFail;
4178 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(ShiftAmount);
4180 Error(ExLoc, "rotate amount must be an immediate");
4181 return MatchOperand_ParseFail;
4184 int64_t Val = CE->getValue();
4185 // Shift amount must be in {0, 8, 16, 24} (0 is undocumented extension)
4186 // normally, zero is represented in asm by omitting the rotate operand
4188 if (Val != 8 && Val != 16 && Val != 24 && Val != 0) {
4189 Error(ExLoc, "'ror' rotate amount must be 8, 16, or 24");
4190 return MatchOperand_ParseFail;
4193 Operands.push_back(ARMOperand::CreateRotImm(Val, S, EndLoc));
4195 return MatchOperand_Success;
4198 ARMAsmParser::OperandMatchResultTy
4199 ARMAsmParser::parseBitfield(OperandVector &Operands) {
4200 SMLoc S = Parser.getTok().getLoc();
4201 // The bitfield descriptor is really two operands, the LSB and the width.
4202 if (Parser.getTok().isNot(AsmToken::Hash) &&
4203 Parser.getTok().isNot(AsmToken::Dollar)) {
4204 Error(Parser.getTok().getLoc(), "'#' expected");
4205 return MatchOperand_ParseFail;
4207 Parser.Lex(); // Eat hash token.
4209 const MCExpr *LSBExpr;
4210 SMLoc E = Parser.getTok().getLoc();
4211 if (getParser().parseExpression(LSBExpr)) {
4212 Error(E, "malformed immediate expression");
4213 return MatchOperand_ParseFail;
4215 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(LSBExpr);
4217 Error(E, "'lsb' operand must be an immediate");
4218 return MatchOperand_ParseFail;
4221 int64_t LSB = CE->getValue();
4222 // The LSB must be in the range [0,31]
4223 if (LSB < 0 || LSB > 31) {
4224 Error(E, "'lsb' operand must be in the range [0,31]");
4225 return MatchOperand_ParseFail;
4227 E = Parser.getTok().getLoc();
4229 // Expect another immediate operand.
4230 if (Parser.getTok().isNot(AsmToken::Comma)) {
4231 Error(Parser.getTok().getLoc(), "too few operands");
4232 return MatchOperand_ParseFail;
4234 Parser.Lex(); // Eat hash token.
4235 if (Parser.getTok().isNot(AsmToken::Hash) &&
4236 Parser.getTok().isNot(AsmToken::Dollar)) {
4237 Error(Parser.getTok().getLoc(), "'#' expected");
4238 return MatchOperand_ParseFail;
4240 Parser.Lex(); // Eat hash token.
4242 const MCExpr *WidthExpr;
4244 if (getParser().parseExpression(WidthExpr, EndLoc)) {
4245 Error(E, "malformed immediate expression");
4246 return MatchOperand_ParseFail;
4248 CE = dyn_cast<MCConstantExpr>(WidthExpr);
4250 Error(E, "'width' operand must be an immediate");
4251 return MatchOperand_ParseFail;
4254 int64_t Width = CE->getValue();
4255 // The LSB must be in the range [1,32-lsb]
4256 if (Width < 1 || Width > 32 - LSB) {
4257 Error(E, "'width' operand must be in the range [1,32-lsb]");
4258 return MatchOperand_ParseFail;
4261 Operands.push_back(ARMOperand::CreateBitfield(LSB, Width, S, EndLoc));
4263 return MatchOperand_Success;
4266 ARMAsmParser::OperandMatchResultTy
4267 ARMAsmParser::parsePostIdxReg(OperandVector &Operands) {
4268 // Check for a post-index addressing register operand. Specifically:
4269 // postidx_reg := '+' register {, shift}
4270 // | '-' register {, shift}
4271 // | register {, shift}
4273 // This method must return MatchOperand_NoMatch without consuming any tokens
4274 // in the case where there is no match, as other alternatives take other
4276 AsmToken Tok = Parser.getTok();
4277 SMLoc S = Tok.getLoc();
4278 bool haveEaten = false;
4280 if (Tok.is(AsmToken::Plus)) {
4281 Parser.Lex(); // Eat the '+' token.
4283 } else if (Tok.is(AsmToken::Minus)) {
4284 Parser.Lex(); // Eat the '-' token.
4289 SMLoc E = Parser.getTok().getEndLoc();
4290 int Reg = tryParseRegister();
4293 return MatchOperand_NoMatch;
4294 Error(Parser.getTok().getLoc(), "register expected");
4295 return MatchOperand_ParseFail;
4298 ARM_AM::ShiftOpc ShiftTy = ARM_AM::no_shift;
4299 unsigned ShiftImm = 0;
4300 if (Parser.getTok().is(AsmToken::Comma)) {
4301 Parser.Lex(); // Eat the ','.
4302 if (parseMemRegOffsetShift(ShiftTy, ShiftImm))
4303 return MatchOperand_ParseFail;
4305 // FIXME: Only approximates end...may include intervening whitespace.
4306 E = Parser.getTok().getLoc();
4309 Operands.push_back(ARMOperand::CreatePostIdxReg(Reg, isAdd, ShiftTy,
4312 return MatchOperand_Success;
4315 ARMAsmParser::OperandMatchResultTy
4316 ARMAsmParser::parseAM3Offset(OperandVector &Operands) {
4317 // Check for a post-index addressing register operand. Specifically:
4318 // am3offset := '+' register
4325 // This method must return MatchOperand_NoMatch without consuming any tokens
4326 // in the case where there is no match, as other alternatives take other
4328 AsmToken Tok = Parser.getTok();
4329 SMLoc S = Tok.getLoc();
4331 // Do immediates first, as we always parse those if we have a '#'.
4332 if (Parser.getTok().is(AsmToken::Hash) ||
4333 Parser.getTok().is(AsmToken::Dollar)) {
4334 Parser.Lex(); // Eat '#' or '$'.
4335 // Explicitly look for a '-', as we need to encode negative zero
4337 bool isNegative = Parser.getTok().is(AsmToken::Minus);
4338 const MCExpr *Offset;
4340 if (getParser().parseExpression(Offset, E))
4341 return MatchOperand_ParseFail;
4342 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(Offset);
4344 Error(S, "constant expression expected");
4345 return MatchOperand_ParseFail;
4347 // Negative zero is encoded as the flag value INT32_MIN.
4348 int32_t Val = CE->getValue();
4349 if (isNegative && Val == 0)
4353 ARMOperand::CreateImm(MCConstantExpr::Create(Val, getContext()), S, E));
4355 return MatchOperand_Success;
4359 bool haveEaten = false;
4361 if (Tok.is(AsmToken::Plus)) {
4362 Parser.Lex(); // Eat the '+' token.
4364 } else if (Tok.is(AsmToken::Minus)) {
4365 Parser.Lex(); // Eat the '-' token.
4370 Tok = Parser.getTok();
4371 int Reg = tryParseRegister();
4374 return MatchOperand_NoMatch;
4375 Error(Tok.getLoc(), "register expected");
4376 return MatchOperand_ParseFail;
4379 Operands.push_back(ARMOperand::CreatePostIdxReg(Reg, isAdd, ARM_AM::no_shift,
4380 0, S, Tok.getEndLoc()));
4382 return MatchOperand_Success;
4385 /// Convert parsed operands to MCInst. Needed here because this instruction
4386 /// only has two register operands, but multiplication is commutative so
4387 /// assemblers should accept both "mul rD, rN, rD" and "mul rD, rD, rN".
4388 void ARMAsmParser::cvtThumbMultiply(MCInst &Inst,
4389 const OperandVector &Operands) {
4390 ((ARMOperand &)*Operands[3]).addRegOperands(Inst, 1);
4391 ((ARMOperand &)*Operands[1]).addCCOutOperands(Inst, 1);
4392 // If we have a three-operand form, make sure to set Rn to be the operand
4393 // that isn't the same as Rd.
4395 if (Operands.size() == 6 &&
4396 ((ARMOperand &)*Operands[4]).getReg() ==
4397 ((ARMOperand &)*Operands[3]).getReg())
4399 ((ARMOperand &)*Operands[RegOp]).addRegOperands(Inst, 1);
4400 Inst.addOperand(Inst.getOperand(0));
4401 ((ARMOperand &)*Operands[2]).addCondCodeOperands(Inst, 2);
4404 void ARMAsmParser::cvtThumbBranches(MCInst &Inst,
4405 const OperandVector &Operands) {
4406 int CondOp = -1, ImmOp = -1;
4407 switch(Inst.getOpcode()) {
4409 case ARM::tBcc: CondOp = 1; ImmOp = 2; break;
4412 case ARM::t2Bcc: CondOp = 1; ImmOp = 3; break;
4414 default: llvm_unreachable("Unexpected instruction in cvtThumbBranches");
4416 // first decide whether or not the branch should be conditional
4417 // by looking at it's location relative to an IT block
4419 // inside an IT block we cannot have any conditional branches. any
4420 // such instructions needs to be converted to unconditional form
4421 switch(Inst.getOpcode()) {
4422 case ARM::tBcc: Inst.setOpcode(ARM::tB); break;
4423 case ARM::t2Bcc: Inst.setOpcode(ARM::t2B); break;
4426 // outside IT blocks we can only have unconditional branches with AL
4427 // condition code or conditional branches with non-AL condition code
4428 unsigned Cond = static_cast<ARMOperand &>(*Operands[CondOp]).getCondCode();
4429 switch(Inst.getOpcode()) {
4432 Inst.setOpcode(Cond == ARMCC::AL ? ARM::tB : ARM::tBcc);
4436 Inst.setOpcode(Cond == ARMCC::AL ? ARM::t2B : ARM::t2Bcc);
4441 // now decide on encoding size based on branch target range
4442 switch(Inst.getOpcode()) {
4443 // classify tB as either t2B or t1B based on range of immediate operand
4445 ARMOperand &op = static_cast<ARMOperand &>(*Operands[ImmOp]);
4446 if (!op.isSignedOffset<11, 1>() && isThumbTwo())
4447 Inst.setOpcode(ARM::t2B);
4450 // classify tBcc as either t2Bcc or t1Bcc based on range of immediate operand
4452 ARMOperand &op = static_cast<ARMOperand &>(*Operands[ImmOp]);
4453 if (!op.isSignedOffset<8, 1>() && isThumbTwo())
4454 Inst.setOpcode(ARM::t2Bcc);
4458 ((ARMOperand &)*Operands[ImmOp]).addImmOperands(Inst, 1);
4459 ((ARMOperand &)*Operands[CondOp]).addCondCodeOperands(Inst, 2);
4462 /// Parse an ARM memory expression, return false if successful else return true
4463 /// or an error. The first token must be a '[' when called.
4464 bool ARMAsmParser::parseMemory(OperandVector &Operands) {
4466 assert(Parser.getTok().is(AsmToken::LBrac) &&
4467 "Token is not a Left Bracket");
4468 S = Parser.getTok().getLoc();
4469 Parser.Lex(); // Eat left bracket token.
4471 const AsmToken &BaseRegTok = Parser.getTok();
4472 int BaseRegNum = tryParseRegister();
4473 if (BaseRegNum == -1)
4474 return Error(BaseRegTok.getLoc(), "register expected");
4476 // The next token must either be a comma, a colon or a closing bracket.
4477 const AsmToken &Tok = Parser.getTok();
4478 if (!Tok.is(AsmToken::Colon) && !Tok.is(AsmToken::Comma) &&
4479 !Tok.is(AsmToken::RBrac))
4480 return Error(Tok.getLoc(), "malformed memory operand");
4482 if (Tok.is(AsmToken::RBrac)) {
4483 E = Tok.getEndLoc();
4484 Parser.Lex(); // Eat right bracket token.
4486 Operands.push_back(ARMOperand::CreateMem(BaseRegNum, nullptr, 0,
4487 ARM_AM::no_shift, 0, 0, false,
4490 // If there's a pre-indexing writeback marker, '!', just add it as a token
4491 // operand. It's rather odd, but syntactically valid.
4492 if (Parser.getTok().is(AsmToken::Exclaim)) {
4493 Operands.push_back(ARMOperand::CreateToken("!",Parser.getTok().getLoc()));
4494 Parser.Lex(); // Eat the '!'.
4500 assert((Tok.is(AsmToken::Colon) || Tok.is(AsmToken::Comma)) &&
4501 "Lost colon or comma in memory operand?!");
4502 if (Tok.is(AsmToken::Comma)) {
4503 Parser.Lex(); // Eat the comma.
4506 // If we have a ':', it's an alignment specifier.
4507 if (Parser.getTok().is(AsmToken::Colon)) {
4508 Parser.Lex(); // Eat the ':'.
4509 E = Parser.getTok().getLoc();
4510 SMLoc AlignmentLoc = Tok.getLoc();
4513 if (getParser().parseExpression(Expr))
4516 // The expression has to be a constant. Memory references with relocations
4517 // don't come through here, as they use the <label> forms of the relevant
4519 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(Expr);
4521 return Error (E, "constant expression expected");
4524 switch (CE->getValue()) {
4527 "alignment specifier must be 16, 32, 64, 128, or 256 bits");
4528 case 16: Align = 2; break;
4529 case 32: Align = 4; break;
4530 case 64: Align = 8; break;
4531 case 128: Align = 16; break;
4532 case 256: Align = 32; break;
4535 // Now we should have the closing ']'
4536 if (Parser.getTok().isNot(AsmToken::RBrac))
4537 return Error(Parser.getTok().getLoc(), "']' expected");
4538 E = Parser.getTok().getEndLoc();
4539 Parser.Lex(); // Eat right bracket token.
4541 // Don't worry about range checking the value here. That's handled by
4542 // the is*() predicates.
4543 Operands.push_back(ARMOperand::CreateMem(BaseRegNum, nullptr, 0,
4544 ARM_AM::no_shift, 0, Align,
4545 false, S, E, AlignmentLoc));
4547 // If there's a pre-indexing writeback marker, '!', just add it as a token
4549 if (Parser.getTok().is(AsmToken::Exclaim)) {
4550 Operands.push_back(ARMOperand::CreateToken("!",Parser.getTok().getLoc()));
4551 Parser.Lex(); // Eat the '!'.
4557 // If we have a '#', it's an immediate offset, else assume it's a register
4558 // offset. Be friendly and also accept a plain integer (without a leading
4559 // hash) for gas compatibility.
4560 if (Parser.getTok().is(AsmToken::Hash) ||
4561 Parser.getTok().is(AsmToken::Dollar) ||
4562 Parser.getTok().is(AsmToken::Integer)) {
4563 if (Parser.getTok().isNot(AsmToken::Integer))
4564 Parser.Lex(); // Eat '#' or '$'.
4565 E = Parser.getTok().getLoc();
4567 bool isNegative = getParser().getTok().is(AsmToken::Minus);
4568 const MCExpr *Offset;
4569 if (getParser().parseExpression(Offset))
4572 // The expression has to be a constant. Memory references with relocations
4573 // don't come through here, as they use the <label> forms of the relevant
4575 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(Offset);
4577 return Error (E, "constant expression expected");
4579 // If the constant was #-0, represent it as INT32_MIN.
4580 int32_t Val = CE->getValue();
4581 if (isNegative && Val == 0)
4582 CE = MCConstantExpr::Create(INT32_MIN, getContext());
4584 // Now we should have the closing ']'
4585 if (Parser.getTok().isNot(AsmToken::RBrac))
4586 return Error(Parser.getTok().getLoc(), "']' expected");
4587 E = Parser.getTok().getEndLoc();
4588 Parser.Lex(); // Eat right bracket token.
4590 // Don't worry about range checking the value here. That's handled by
4591 // the is*() predicates.
4592 Operands.push_back(ARMOperand::CreateMem(BaseRegNum, CE, 0,
4593 ARM_AM::no_shift, 0, 0,
4596 // If there's a pre-indexing writeback marker, '!', just add it as a token
4598 if (Parser.getTok().is(AsmToken::Exclaim)) {
4599 Operands.push_back(ARMOperand::CreateToken("!",Parser.getTok().getLoc()));
4600 Parser.Lex(); // Eat the '!'.
4606 // The register offset is optionally preceded by a '+' or '-'
4607 bool isNegative = false;
4608 if (Parser.getTok().is(AsmToken::Minus)) {
4610 Parser.Lex(); // Eat the '-'.
4611 } else if (Parser.getTok().is(AsmToken::Plus)) {
4613 Parser.Lex(); // Eat the '+'.
4616 E = Parser.getTok().getLoc();
4617 int OffsetRegNum = tryParseRegister();
4618 if (OffsetRegNum == -1)
4619 return Error(E, "register expected");
4621 // If there's a shift operator, handle it.
4622 ARM_AM::ShiftOpc ShiftType = ARM_AM::no_shift;
4623 unsigned ShiftImm = 0;
4624 if (Parser.getTok().is(AsmToken::Comma)) {
4625 Parser.Lex(); // Eat the ','.
4626 if (parseMemRegOffsetShift(ShiftType, ShiftImm))
4630 // Now we should have the closing ']'
4631 if (Parser.getTok().isNot(AsmToken::RBrac))
4632 return Error(Parser.getTok().getLoc(), "']' expected");
4633 E = Parser.getTok().getEndLoc();
4634 Parser.Lex(); // Eat right bracket token.
4636 Operands.push_back(ARMOperand::CreateMem(BaseRegNum, nullptr, OffsetRegNum,
4637 ShiftType, ShiftImm, 0, isNegative,
4640 // If there's a pre-indexing writeback marker, '!', just add it as a token
4642 if (Parser.getTok().is(AsmToken::Exclaim)) {
4643 Operands.push_back(ARMOperand::CreateToken("!",Parser.getTok().getLoc()));
4644 Parser.Lex(); // Eat the '!'.
4650 /// parseMemRegOffsetShift - one of these two:
4651 /// ( lsl | lsr | asr | ror ) , # shift_amount
4653 /// return true if it parses a shift otherwise it returns false.
4654 bool ARMAsmParser::parseMemRegOffsetShift(ARM_AM::ShiftOpc &St,
4656 SMLoc Loc = Parser.getTok().getLoc();
4657 const AsmToken &Tok = Parser.getTok();
4658 if (Tok.isNot(AsmToken::Identifier))
4660 StringRef ShiftName = Tok.getString();
4661 if (ShiftName == "lsl" || ShiftName == "LSL" ||
4662 ShiftName == "asl" || ShiftName == "ASL")
4664 else if (ShiftName == "lsr" || ShiftName == "LSR")
4666 else if (ShiftName == "asr" || ShiftName == "ASR")
4668 else if (ShiftName == "ror" || ShiftName == "ROR")
4670 else if (ShiftName == "rrx" || ShiftName == "RRX")
4673 return Error(Loc, "illegal shift operator");
4674 Parser.Lex(); // Eat shift type token.
4676 // rrx stands alone.
4678 if (St != ARM_AM::rrx) {
4679 Loc = Parser.getTok().getLoc();
4680 // A '#' and a shift amount.
4681 const AsmToken &HashTok = Parser.getTok();
4682 if (HashTok.isNot(AsmToken::Hash) &&
4683 HashTok.isNot(AsmToken::Dollar))
4684 return Error(HashTok.getLoc(), "'#' expected");
4685 Parser.Lex(); // Eat hash token.
4688 if (getParser().parseExpression(Expr))
4690 // Range check the immediate.
4691 // lsl, ror: 0 <= imm <= 31
4692 // lsr, asr: 0 <= imm <= 32
4693 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(Expr);
4695 return Error(Loc, "shift amount must be an immediate");
4696 int64_t Imm = CE->getValue();
4698 ((St == ARM_AM::lsl || St == ARM_AM::ror) && Imm > 31) ||
4699 ((St == ARM_AM::lsr || St == ARM_AM::asr) && Imm > 32))
4700 return Error(Loc, "immediate shift value out of range");
4701 // If <ShiftTy> #0, turn it into a no_shift.
4704 // For consistency, treat lsr #32 and asr #32 as having immediate value 0.
4713 /// parseFPImm - A floating point immediate expression operand.
4714 ARMAsmParser::OperandMatchResultTy
4715 ARMAsmParser::parseFPImm(OperandVector &Operands) {
4716 // Anything that can accept a floating point constant as an operand
4717 // needs to go through here, as the regular parseExpression is
4720 // This routine still creates a generic Immediate operand, containing
4721 // a bitcast of the 64-bit floating point value. The various operands
4722 // that accept floats can check whether the value is valid for them
4723 // via the standard is*() predicates.
4725 SMLoc S = Parser.getTok().getLoc();
4727 if (Parser.getTok().isNot(AsmToken::Hash) &&
4728 Parser.getTok().isNot(AsmToken::Dollar))
4729 return MatchOperand_NoMatch;
4731 // Disambiguate the VMOV forms that can accept an FP immediate.
4732 // vmov.f32 <sreg>, #imm
4733 // vmov.f64 <dreg>, #imm
4734 // vmov.f32 <dreg>, #imm @ vector f32x2
4735 // vmov.f32 <qreg>, #imm @ vector f32x4
4737 // There are also the NEON VMOV instructions which expect an
4738 // integer constant. Make sure we don't try to parse an FPImm
4740 // vmov.i{8|16|32|64} <dreg|qreg>, #imm
4741 ARMOperand &TyOp = static_cast<ARMOperand &>(*Operands[2]);
4742 bool isVmovf = TyOp.isToken() &&
4743 (TyOp.getToken() == ".f32" || TyOp.getToken() == ".f64");
4744 ARMOperand &Mnemonic = static_cast<ARMOperand &>(*Operands[0]);
4745 bool isFconst = Mnemonic.isToken() && (Mnemonic.getToken() == "fconstd" ||
4746 Mnemonic.getToken() == "fconsts");
4747 if (!(isVmovf || isFconst))
4748 return MatchOperand_NoMatch;
4750 Parser.Lex(); // Eat '#' or '$'.
4752 // Handle negation, as that still comes through as a separate token.
4753 bool isNegative = false;
4754 if (Parser.getTok().is(AsmToken::Minus)) {
4758 const AsmToken &Tok = Parser.getTok();
4759 SMLoc Loc = Tok.getLoc();
4760 if (Tok.is(AsmToken::Real) && isVmovf) {
4761 APFloat RealVal(APFloat::IEEEsingle, Tok.getString());
4762 uint64_t IntVal = RealVal.bitcastToAPInt().getZExtValue();
4763 // If we had a '-' in front, toggle the sign bit.
4764 IntVal ^= (uint64_t)isNegative << 31;
4765 Parser.Lex(); // Eat the token.
4766 Operands.push_back(ARMOperand::CreateImm(
4767 MCConstantExpr::Create(IntVal, getContext()),
4768 S, Parser.getTok().getLoc()));
4769 return MatchOperand_Success;
4771 // Also handle plain integers. Instructions which allow floating point
4772 // immediates also allow a raw encoded 8-bit value.
4773 if (Tok.is(AsmToken::Integer) && isFconst) {
4774 int64_t Val = Tok.getIntVal();
4775 Parser.Lex(); // Eat the token.
4776 if (Val > 255 || Val < 0) {
4777 Error(Loc, "encoded floating point value out of range");
4778 return MatchOperand_ParseFail;
4780 float RealVal = ARM_AM::getFPImmFloat(Val);
4781 Val = APFloat(RealVal).bitcastToAPInt().getZExtValue();
4783 Operands.push_back(ARMOperand::CreateImm(
4784 MCConstantExpr::Create(Val, getContext()), S,
4785 Parser.getTok().getLoc()));
4786 return MatchOperand_Success;
4789 Error(Loc, "invalid floating point immediate");
4790 return MatchOperand_ParseFail;
4793 /// Parse a arm instruction operand. For now this parses the operand regardless
4794 /// of the mnemonic.
4795 bool ARMAsmParser::parseOperand(OperandVector &Operands, StringRef Mnemonic) {
4798 // Check if the current operand has a custom associated parser, if so, try to
4799 // custom parse the operand, or fallback to the general approach.
4800 OperandMatchResultTy ResTy = MatchOperandParserImpl(Operands, Mnemonic);
4801 if (ResTy == MatchOperand_Success)
4803 // If there wasn't a custom match, try the generic matcher below. Otherwise,
4804 // there was a match, but an error occurred, in which case, just return that
4805 // the operand parsing failed.
4806 if (ResTy == MatchOperand_ParseFail)
4809 switch (getLexer().getKind()) {
4811 Error(Parser.getTok().getLoc(), "unexpected token in operand");
4813 case AsmToken::Identifier: {
4814 // If we've seen a branch mnemonic, the next operand must be a label. This
4815 // is true even if the label is a register name. So "br r1" means branch to
4817 bool ExpectLabel = Mnemonic == "b" || Mnemonic == "bl";
4819 if (!tryParseRegisterWithWriteBack(Operands))
4821 int Res = tryParseShiftRegister(Operands);
4822 if (Res == 0) // success
4824 else if (Res == -1) // irrecoverable error
4826 // If this is VMRS, check for the apsr_nzcv operand.
4827 if (Mnemonic == "vmrs" &&
4828 Parser.getTok().getString().equals_lower("apsr_nzcv")) {
4829 S = Parser.getTok().getLoc();
4831 Operands.push_back(ARMOperand::CreateToken("APSR_nzcv", S));
4836 // Fall though for the Identifier case that is not a register or a
4839 case AsmToken::LParen: // parenthesized expressions like (_strcmp-4)
4840 case AsmToken::Integer: // things like 1f and 2b as a branch targets
4841 case AsmToken::String: // quoted label names.
4842 case AsmToken::Dot: { // . as a branch target
4843 // This was not a register so parse other operands that start with an
4844 // identifier (like labels) as expressions and create them as immediates.
4845 const MCExpr *IdVal;
4846 S = Parser.getTok().getLoc();
4847 if (getParser().parseExpression(IdVal))
4849 E = SMLoc::getFromPointer(Parser.getTok().getLoc().getPointer() - 1);
4850 Operands.push_back(ARMOperand::CreateImm(IdVal, S, E));
4853 case AsmToken::LBrac:
4854 return parseMemory(Operands);
4855 case AsmToken::LCurly:
4856 return parseRegisterList(Operands);
4857 case AsmToken::Dollar:
4858 case AsmToken::Hash: {
4859 // #42 -> immediate.
4860 S = Parser.getTok().getLoc();
4863 if (Parser.getTok().isNot(AsmToken::Colon)) {
4864 bool isNegative = Parser.getTok().is(AsmToken::Minus);
4865 const MCExpr *ImmVal;
4866 if (getParser().parseExpression(ImmVal))
4868 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(ImmVal);
4870 int32_t Val = CE->getValue();
4871 if (isNegative && Val == 0)
4872 ImmVal = MCConstantExpr::Create(INT32_MIN, getContext());
4874 E = SMLoc::getFromPointer(Parser.getTok().getLoc().getPointer() - 1);
4875 Operands.push_back(ARMOperand::CreateImm(ImmVal, S, E));
4877 // There can be a trailing '!' on operands that we want as a separate
4878 // '!' Token operand. Handle that here. For example, the compatibility
4879 // alias for 'srsdb sp!, #imm' is 'srsdb #imm!'.
4880 if (Parser.getTok().is(AsmToken::Exclaim)) {
4881 Operands.push_back(ARMOperand::CreateToken(Parser.getTok().getString(),
4882 Parser.getTok().getLoc()));
4883 Parser.Lex(); // Eat exclaim token
4887 // w/ a ':' after the '#', it's just like a plain ':'.
4890 case AsmToken::Colon: {
4891 // ":lower16:" and ":upper16:" expression prefixes
4892 // FIXME: Check it's an expression prefix,
4893 // e.g. (FOO - :lower16:BAR) isn't legal.
4894 ARMMCExpr::VariantKind RefKind;
4895 if (parsePrefix(RefKind))
4898 const MCExpr *SubExprVal;
4899 if (getParser().parseExpression(SubExprVal))
4902 const MCExpr *ExprVal = ARMMCExpr::Create(RefKind, SubExprVal,
4904 E = SMLoc::getFromPointer(Parser.getTok().getLoc().getPointer() - 1);
4905 Operands.push_back(ARMOperand::CreateImm(ExprVal, S, E));
4908 case AsmToken::Equal: {
4909 if (Mnemonic != "ldr") // only parse for ldr pseudo (e.g. ldr r0, =val)
4910 return Error(Parser.getTok().getLoc(), "unexpected token in operand");
4912 Parser.Lex(); // Eat '='
4913 const MCExpr *SubExprVal;
4914 if (getParser().parseExpression(SubExprVal))
4916 E = SMLoc::getFromPointer(Parser.getTok().getLoc().getPointer() - 1);
4918 const MCExpr *CPLoc = getTargetStreamer().addConstantPoolEntry(SubExprVal);
4919 Operands.push_back(ARMOperand::CreateImm(CPLoc, S, E));
4925 // parsePrefix - Parse ARM 16-bit relocations expression prefix, i.e.
4926 // :lower16: and :upper16:.
4927 bool ARMAsmParser::parsePrefix(ARMMCExpr::VariantKind &RefKind) {
4928 RefKind = ARMMCExpr::VK_ARM_None;
4930 // consume an optional '#' (GNU compatibility)
4931 if (getLexer().is(AsmToken::Hash))
4934 // :lower16: and :upper16: modifiers
4935 assert(getLexer().is(AsmToken::Colon) && "expected a :");
4936 Parser.Lex(); // Eat ':'
4938 if (getLexer().isNot(AsmToken::Identifier)) {
4939 Error(Parser.getTok().getLoc(), "expected prefix identifier in operand");
4943 StringRef IDVal = Parser.getTok().getIdentifier();
4944 if (IDVal == "lower16") {
4945 RefKind = ARMMCExpr::VK_ARM_LO16;
4946 } else if (IDVal == "upper16") {
4947 RefKind = ARMMCExpr::VK_ARM_HI16;
4949 Error(Parser.getTok().getLoc(), "unexpected prefix in operand");
4954 if (getLexer().isNot(AsmToken::Colon)) {
4955 Error(Parser.getTok().getLoc(), "unexpected token after prefix");
4958 Parser.Lex(); // Eat the last ':'
4962 /// \brief Given a mnemonic, split out possible predication code and carry
4963 /// setting letters to form a canonical mnemonic and flags.
4965 // FIXME: Would be nice to autogen this.
4966 // FIXME: This is a bit of a maze of special cases.
4967 StringRef ARMAsmParser::splitMnemonic(StringRef Mnemonic,
4968 unsigned &PredicationCode,
4970 unsigned &ProcessorIMod,
4971 StringRef &ITMask) {
4972 PredicationCode = ARMCC::AL;
4973 CarrySetting = false;
4976 // Ignore some mnemonics we know aren't predicated forms.
4978 // FIXME: Would be nice to autogen this.
4979 if ((Mnemonic == "movs" && isThumb()) ||
4980 Mnemonic == "teq" || Mnemonic == "vceq" || Mnemonic == "svc" ||
4981 Mnemonic == "mls" || Mnemonic == "smmls" || Mnemonic == "vcls" ||
4982 Mnemonic == "vmls" || Mnemonic == "vnmls" || Mnemonic == "vacge" ||
4983 Mnemonic == "vcge" || Mnemonic == "vclt" || Mnemonic == "vacgt" ||
4984 Mnemonic == "vaclt" || Mnemonic == "vacle" || Mnemonic == "hlt" ||
4985 Mnemonic == "vcgt" || Mnemonic == "vcle" || Mnemonic == "smlal" ||
4986 Mnemonic == "umaal" || Mnemonic == "umlal" || Mnemonic == "vabal" ||
4987 Mnemonic == "vmlal" || Mnemonic == "vpadal" || Mnemonic == "vqdmlal" ||
4988 Mnemonic == "fmuls" || Mnemonic == "vmaxnm" || Mnemonic == "vminnm" ||
4989 Mnemonic == "vcvta" || Mnemonic == "vcvtn" || Mnemonic == "vcvtp" ||
4990 Mnemonic == "vcvtm" || Mnemonic == "vrinta" || Mnemonic == "vrintn" ||
4991 Mnemonic == "vrintp" || Mnemonic == "vrintm" || Mnemonic.startswith("vsel"))
4994 // First, split out any predication code. Ignore mnemonics we know aren't
4995 // predicated but do have a carry-set and so weren't caught above.
4996 if (Mnemonic != "adcs" && Mnemonic != "bics" && Mnemonic != "movs" &&
4997 Mnemonic != "muls" && Mnemonic != "smlals" && Mnemonic != "smulls" &&
4998 Mnemonic != "umlals" && Mnemonic != "umulls" && Mnemonic != "lsls" &&
4999 Mnemonic != "sbcs" && Mnemonic != "rscs") {
5000 unsigned CC = StringSwitch<unsigned>(Mnemonic.substr(Mnemonic.size()-2))
5001 .Case("eq", ARMCC::EQ)
5002 .Case("ne", ARMCC::NE)
5003 .Case("hs", ARMCC::HS)
5004 .Case("cs", ARMCC::HS)
5005 .Case("lo", ARMCC::LO)
5006 .Case("cc", ARMCC::LO)
5007 .Case("mi", ARMCC::MI)
5008 .Case("pl", ARMCC::PL)
5009 .Case("vs", ARMCC::VS)
5010 .Case("vc", ARMCC::VC)
5011 .Case("hi", ARMCC::HI)
5012 .Case("ls", ARMCC::LS)
5013 .Case("ge", ARMCC::GE)
5014 .Case("lt", ARMCC::LT)
5015 .Case("gt", ARMCC::GT)
5016 .Case("le", ARMCC::LE)
5017 .Case("al", ARMCC::AL)
5020 Mnemonic = Mnemonic.slice(0, Mnemonic.size() - 2);
5021 PredicationCode = CC;
5025 // Next, determine if we have a carry setting bit. We explicitly ignore all
5026 // the instructions we know end in 's'.
5027 if (Mnemonic.endswith("s") &&
5028 !(Mnemonic == "cps" || Mnemonic == "mls" ||
5029 Mnemonic == "mrs" || Mnemonic == "smmls" || Mnemonic == "vabs" ||
5030 Mnemonic == "vcls" || Mnemonic == "vmls" || Mnemonic == "vmrs" ||
5031 Mnemonic == "vnmls" || Mnemonic == "vqabs" || Mnemonic == "vrecps" ||
5032 Mnemonic == "vrsqrts" || Mnemonic == "srs" || Mnemonic == "flds" ||
5033 Mnemonic == "fmrs" || Mnemonic == "fsqrts" || Mnemonic == "fsubs" ||
5034 Mnemonic == "fsts" || Mnemonic == "fcpys" || Mnemonic == "fdivs" ||
5035 Mnemonic == "fmuls" || Mnemonic == "fcmps" || Mnemonic == "fcmpzs" ||
5036 Mnemonic == "vfms" || Mnemonic == "vfnms" || Mnemonic == "fconsts" ||
5037 (Mnemonic == "movs" && isThumb()))) {
5038 Mnemonic = Mnemonic.slice(0, Mnemonic.size() - 1);
5039 CarrySetting = true;
5042 // The "cps" instruction can have a interrupt mode operand which is glued into
5043 // the mnemonic. Check if this is the case, split it and parse the imod op
5044 if (Mnemonic.startswith("cps")) {
5045 // Split out any imod code.
5047 StringSwitch<unsigned>(Mnemonic.substr(Mnemonic.size()-2, 2))
5048 .Case("ie", ARM_PROC::IE)
5049 .Case("id", ARM_PROC::ID)
5052 Mnemonic = Mnemonic.slice(0, Mnemonic.size()-2);
5053 ProcessorIMod = IMod;
5057 // The "it" instruction has the condition mask on the end of the mnemonic.
5058 if (Mnemonic.startswith("it")) {
5059 ITMask = Mnemonic.slice(2, Mnemonic.size());
5060 Mnemonic = Mnemonic.slice(0, 2);
5066 /// \brief Given a canonical mnemonic, determine if the instruction ever allows
5067 /// inclusion of carry set or predication code operands.
5069 // FIXME: It would be nice to autogen this.
5071 getMnemonicAcceptInfo(StringRef Mnemonic, StringRef FullInst,
5072 bool &CanAcceptCarrySet, bool &CanAcceptPredicationCode) {
5073 if (Mnemonic == "and" || Mnemonic == "lsl" || Mnemonic == "lsr" ||
5074 Mnemonic == "rrx" || Mnemonic == "ror" || Mnemonic == "sub" ||
5075 Mnemonic == "add" || Mnemonic == "adc" ||
5076 Mnemonic == "mul" || Mnemonic == "bic" || Mnemonic == "asr" ||
5077 Mnemonic == "orr" || Mnemonic == "mvn" ||
5078 Mnemonic == "rsb" || Mnemonic == "rsc" || Mnemonic == "orn" ||
5079 Mnemonic == "sbc" || Mnemonic == "eor" || Mnemonic == "neg" ||
5080 Mnemonic == "vfm" || Mnemonic == "vfnm" ||
5081 (!isThumb() && (Mnemonic == "smull" || Mnemonic == "mov" ||
5082 Mnemonic == "mla" || Mnemonic == "smlal" ||
5083 Mnemonic == "umlal" || Mnemonic == "umull"))) {
5084 CanAcceptCarrySet = true;
5086 CanAcceptCarrySet = false;
5088 if (Mnemonic == "bkpt" || Mnemonic == "cbnz" || Mnemonic == "setend" ||
5089 Mnemonic == "cps" || Mnemonic == "it" || Mnemonic == "cbz" ||
5090 Mnemonic == "trap" || Mnemonic == "hlt" || Mnemonic == "udf" ||
5091 Mnemonic.startswith("crc32") || Mnemonic.startswith("cps") ||
5092 Mnemonic.startswith("vsel") ||
5093 Mnemonic == "vmaxnm" || Mnemonic == "vminnm" || Mnemonic == "vcvta" ||
5094 Mnemonic == "vcvtn" || Mnemonic == "vcvtp" || Mnemonic == "vcvtm" ||
5095 Mnemonic == "vrinta" || Mnemonic == "vrintn" || Mnemonic == "vrintp" ||
5096 Mnemonic == "vrintm" || Mnemonic.startswith("aes") ||
5097 Mnemonic.startswith("sha1") || Mnemonic.startswith("sha256") ||
5098 (FullInst.startswith("vmull") && FullInst.endswith(".p64"))) {
5099 // These mnemonics are never predicable
5100 CanAcceptPredicationCode = false;
5101 } else if (!isThumb()) {
5102 // Some instructions are only predicable in Thumb mode
5103 CanAcceptPredicationCode
5104 = Mnemonic != "cdp2" && Mnemonic != "clrex" && Mnemonic != "mcr2" &&
5105 Mnemonic != "mcrr2" && Mnemonic != "mrc2" && Mnemonic != "mrrc2" &&
5106 Mnemonic != "dmb" && Mnemonic != "dsb" && Mnemonic != "isb" &&
5107 Mnemonic != "pld" && Mnemonic != "pli" && Mnemonic != "pldw" &&
5108 Mnemonic != "ldc2" && Mnemonic != "ldc2l" &&
5109 Mnemonic != "stc2" && Mnemonic != "stc2l" &&
5110 !Mnemonic.startswith("rfe") && !Mnemonic.startswith("srs");
5111 } else if (isThumbOne()) {
5113 CanAcceptPredicationCode = Mnemonic != "movs";
5115 CanAcceptPredicationCode = Mnemonic != "nop" && Mnemonic != "movs";
5117 CanAcceptPredicationCode = true;
5120 bool ARMAsmParser::shouldOmitCCOutOperand(StringRef Mnemonic,
5121 OperandVector &Operands) {
5122 // FIXME: This is all horribly hacky. We really need a better way to deal
5123 // with optional operands like this in the matcher table.
5125 // The 'mov' mnemonic is special. One variant has a cc_out operand, while
5126 // another does not. Specifically, the MOVW instruction does not. So we
5127 // special case it here and remove the defaulted (non-setting) cc_out
5128 // operand if that's the instruction we're trying to match.
5130 // We do this as post-processing of the explicit operands rather than just
5131 // conditionally adding the cc_out in the first place because we need
5132 // to check the type of the parsed immediate operand.
5133 if (Mnemonic == "mov" && Operands.size() > 4 && !isThumb() &&
5134 !static_cast<ARMOperand &>(*Operands[4]).isARMSOImm() &&
5135 static_cast<ARMOperand &>(*Operands[4]).isImm0_65535Expr() &&
5136 static_cast<ARMOperand &>(*Operands[1]).getReg() == 0)
5139 // Register-register 'add' for thumb does not have a cc_out operand
5140 // when there are only two register operands.
5141 if (isThumb() && Mnemonic == "add" && Operands.size() == 5 &&
5142 static_cast<ARMOperand &>(*Operands[3]).isReg() &&
5143 static_cast<ARMOperand &>(*Operands[4]).isReg() &&
5144 static_cast<ARMOperand &>(*Operands[1]).getReg() == 0)
5146 // Register-register 'add' for thumb does not have a cc_out operand
5147 // when it's an ADD Rdm, SP, {Rdm|#imm0_255} instruction. We do
5148 // have to check the immediate range here since Thumb2 has a variant
5149 // that can handle a different range and has a cc_out operand.
5150 if (((isThumb() && Mnemonic == "add") ||
5151 (isThumbTwo() && Mnemonic == "sub")) &&
5152 Operands.size() == 6 && static_cast<ARMOperand &>(*Operands[3]).isReg() &&
5153 static_cast<ARMOperand &>(*Operands[4]).isReg() &&
5154 static_cast<ARMOperand &>(*Operands[4]).getReg() == ARM::SP &&
5155 static_cast<ARMOperand &>(*Operands[1]).getReg() == 0 &&
5156 ((Mnemonic == "add" && static_cast<ARMOperand &>(*Operands[5]).isReg()) ||
5157 static_cast<ARMOperand &>(*Operands[5]).isImm0_1020s4()))
5159 // For Thumb2, add/sub immediate does not have a cc_out operand for the
5160 // imm0_4095 variant. That's the least-preferred variant when
5161 // selecting via the generic "add" mnemonic, so to know that we
5162 // should remove the cc_out operand, we have to explicitly check that
5163 // it's not one of the other variants. Ugh.
5164 if (isThumbTwo() && (Mnemonic == "add" || Mnemonic == "sub") &&
5165 Operands.size() == 6 && static_cast<ARMOperand &>(*Operands[3]).isReg() &&
5166 static_cast<ARMOperand &>(*Operands[4]).isReg() &&
5167 static_cast<ARMOperand &>(*Operands[5]).isImm()) {
5168 // Nest conditions rather than one big 'if' statement for readability.
5170 // If both registers are low, we're in an IT block, and the immediate is
5171 // in range, we should use encoding T1 instead, which has a cc_out.
5173 isARMLowRegister(static_cast<ARMOperand &>(*Operands[3]).getReg()) &&
5174 isARMLowRegister(static_cast<ARMOperand &>(*Operands[4]).getReg()) &&
5175 static_cast<ARMOperand &>(*Operands[5]).isImm0_7())
5177 // Check against T3. If the second register is the PC, this is an
5178 // alternate form of ADR, which uses encoding T4, so check for that too.
5179 if (static_cast<ARMOperand &>(*Operands[4]).getReg() != ARM::PC &&
5180 static_cast<ARMOperand &>(*Operands[5]).isT2SOImm())
5183 // Otherwise, we use encoding T4, which does not have a cc_out
5188 // The thumb2 multiply instruction doesn't have a CCOut register, so
5189 // if we have a "mul" mnemonic in Thumb mode, check if we'll be able to
5190 // use the 16-bit encoding or not.
5191 if (isThumbTwo() && Mnemonic == "mul" && Operands.size() == 6 &&
5192 static_cast<ARMOperand &>(*Operands[1]).getReg() == 0 &&
5193 static_cast<ARMOperand &>(*Operands[3]).isReg() &&
5194 static_cast<ARMOperand &>(*Operands[4]).isReg() &&
5195 static_cast<ARMOperand &>(*Operands[5]).isReg() &&
5196 // If the registers aren't low regs, the destination reg isn't the
5197 // same as one of the source regs, or the cc_out operand is zero
5198 // outside of an IT block, we have to use the 32-bit encoding, so
5199 // remove the cc_out operand.
5200 (!isARMLowRegister(static_cast<ARMOperand &>(*Operands[3]).getReg()) ||
5201 !isARMLowRegister(static_cast<ARMOperand &>(*Operands[4]).getReg()) ||
5202 !isARMLowRegister(static_cast<ARMOperand &>(*Operands[5]).getReg()) ||
5203 !inITBlock() || (static_cast<ARMOperand &>(*Operands[3]).getReg() !=
5204 static_cast<ARMOperand &>(*Operands[5]).getReg() &&
5205 static_cast<ARMOperand &>(*Operands[3]).getReg() !=
5206 static_cast<ARMOperand &>(*Operands[4]).getReg())))
5209 // Also check the 'mul' syntax variant that doesn't specify an explicit
5210 // destination register.
5211 if (isThumbTwo() && Mnemonic == "mul" && Operands.size() == 5 &&
5212 static_cast<ARMOperand &>(*Operands[1]).getReg() == 0 &&
5213 static_cast<ARMOperand &>(*Operands[3]).isReg() &&
5214 static_cast<ARMOperand &>(*Operands[4]).isReg() &&
5215 // If the registers aren't low regs or the cc_out operand is zero
5216 // outside of an IT block, we have to use the 32-bit encoding, so
5217 // remove the cc_out operand.
5218 (!isARMLowRegister(static_cast<ARMOperand &>(*Operands[3]).getReg()) ||
5219 !isARMLowRegister(static_cast<ARMOperand &>(*Operands[4]).getReg()) ||
5225 // Register-register 'add/sub' for thumb does not have a cc_out operand
5226 // when it's an ADD/SUB SP, #imm. Be lenient on count since there's also
5227 // the "add/sub SP, SP, #imm" version. If the follow-up operands aren't
5228 // right, this will result in better diagnostics (which operand is off)
5230 if (isThumb() && (Mnemonic == "add" || Mnemonic == "sub") &&
5231 (Operands.size() == 5 || Operands.size() == 6) &&
5232 static_cast<ARMOperand &>(*Operands[3]).isReg() &&
5233 static_cast<ARMOperand &>(*Operands[3]).getReg() == ARM::SP &&
5234 static_cast<ARMOperand &>(*Operands[1]).getReg() == 0 &&
5235 (static_cast<ARMOperand &>(*Operands[4]).isImm() ||
5236 (Operands.size() == 6 &&
5237 static_cast<ARMOperand &>(*Operands[5]).isImm())))
5243 bool ARMAsmParser::shouldOmitPredicateOperand(StringRef Mnemonic,
5244 OperandVector &Operands) {
5245 // VRINT{Z, R, X} have a predicate operand in VFP, but not in NEON
5246 unsigned RegIdx = 3;
5247 if ((Mnemonic == "vrintz" || Mnemonic == "vrintx" || Mnemonic == "vrintr") &&
5248 static_cast<ARMOperand &>(*Operands[2]).getToken() == ".f32") {
5249 if (static_cast<ARMOperand &>(*Operands[3]).isToken() &&
5250 static_cast<ARMOperand &>(*Operands[3]).getToken() == ".f32")
5253 if (static_cast<ARMOperand &>(*Operands[RegIdx]).isReg() &&
5254 (ARMMCRegisterClasses[ARM::DPRRegClassID].contains(
5255 static_cast<ARMOperand &>(*Operands[RegIdx]).getReg()) ||
5256 ARMMCRegisterClasses[ARM::QPRRegClassID].contains(
5257 static_cast<ARMOperand &>(*Operands[RegIdx]).getReg())))
5263 static bool isDataTypeToken(StringRef Tok) {
5264 return Tok == ".8" || Tok == ".16" || Tok == ".32" || Tok == ".64" ||
5265 Tok == ".i8" || Tok == ".i16" || Tok == ".i32" || Tok == ".i64" ||
5266 Tok == ".u8" || Tok == ".u16" || Tok == ".u32" || Tok == ".u64" ||
5267 Tok == ".s8" || Tok == ".s16" || Tok == ".s32" || Tok == ".s64" ||
5268 Tok == ".p8" || Tok == ".p16" || Tok == ".f32" || Tok == ".f64" ||
5269 Tok == ".f" || Tok == ".d";
5272 // FIXME: This bit should probably be handled via an explicit match class
5273 // in the .td files that matches the suffix instead of having it be
5274 // a literal string token the way it is now.
5275 static bool doesIgnoreDataTypeSuffix(StringRef Mnemonic, StringRef DT) {
5276 return Mnemonic.startswith("vldm") || Mnemonic.startswith("vstm");
5278 static void applyMnemonicAliases(StringRef &Mnemonic, unsigned Features,
5279 unsigned VariantID);
5281 static bool RequiresVFPRegListValidation(StringRef Inst,
5282 bool &AcceptSinglePrecisionOnly,
5283 bool &AcceptDoublePrecisionOnly) {
5284 if (Inst.size() < 7)
5287 if (Inst.startswith("fldm") || Inst.startswith("fstm")) {
5288 StringRef AddressingMode = Inst.substr(4, 2);
5289 if (AddressingMode == "ia" || AddressingMode == "db" ||
5290 AddressingMode == "ea" || AddressingMode == "fd") {
5291 AcceptSinglePrecisionOnly = Inst[6] == 's';
5292 AcceptDoublePrecisionOnly = Inst[6] == 'd' || Inst[6] == 'x';
5300 /// Parse an arm instruction mnemonic followed by its operands.
5301 bool ARMAsmParser::ParseInstruction(ParseInstructionInfo &Info, StringRef Name,
5302 SMLoc NameLoc, OperandVector &Operands) {
5303 // FIXME: Can this be done via tablegen in some fashion?
5304 bool RequireVFPRegisterListCheck;
5305 bool AcceptSinglePrecisionOnly;
5306 bool AcceptDoublePrecisionOnly;
5307 RequireVFPRegisterListCheck =
5308 RequiresVFPRegListValidation(Name, AcceptSinglePrecisionOnly,
5309 AcceptDoublePrecisionOnly);
5311 // Apply mnemonic aliases before doing anything else, as the destination
5312 // mnemonic may include suffices and we want to handle them normally.
5313 // The generic tblgen'erated code does this later, at the start of
5314 // MatchInstructionImpl(), but that's too late for aliases that include
5315 // any sort of suffix.
5316 unsigned AvailableFeatures = getAvailableFeatures();
5317 unsigned AssemblerDialect = getParser().getAssemblerDialect();
5318 applyMnemonicAliases(Name, AvailableFeatures, AssemblerDialect);
5320 // First check for the ARM-specific .req directive.
5321 if (Parser.getTok().is(AsmToken::Identifier) &&
5322 Parser.getTok().getIdentifier() == ".req") {
5323 parseDirectiveReq(Name, NameLoc);
5324 // We always return 'error' for this, as we're done with this
5325 // statement and don't need to match the 'instruction."
5329 // Create the leading tokens for the mnemonic, split by '.' characters.
5330 size_t Start = 0, Next = Name.find('.');
5331 StringRef Mnemonic = Name.slice(Start, Next);
5333 // Split out the predication code and carry setting flag from the mnemonic.
5334 unsigned PredicationCode;
5335 unsigned ProcessorIMod;
5338 Mnemonic = splitMnemonic(Mnemonic, PredicationCode, CarrySetting,
5339 ProcessorIMod, ITMask);
5341 // In Thumb1, only the branch (B) instruction can be predicated.
5342 if (isThumbOne() && PredicationCode != ARMCC::AL && Mnemonic != "b") {
5343 Parser.eatToEndOfStatement();
5344 return Error(NameLoc, "conditional execution not supported in Thumb1");
5347 Operands.push_back(ARMOperand::CreateToken(Mnemonic, NameLoc));
5349 // Handle the IT instruction ITMask. Convert it to a bitmask. This
5350 // is the mask as it will be for the IT encoding if the conditional
5351 // encoding has a '1' as it's bit0 (i.e. 't' ==> '1'). In the case
5352 // where the conditional bit0 is zero, the instruction post-processing
5353 // will adjust the mask accordingly.
5354 if (Mnemonic == "it") {
5355 SMLoc Loc = SMLoc::getFromPointer(NameLoc.getPointer() + 2);
5356 if (ITMask.size() > 3) {
5357 Parser.eatToEndOfStatement();
5358 return Error(Loc, "too many conditions on IT instruction");
5361 for (unsigned i = ITMask.size(); i != 0; --i) {
5362 char pos = ITMask[i - 1];
5363 if (pos != 't' && pos != 'e') {
5364 Parser.eatToEndOfStatement();
5365 return Error(Loc, "illegal IT block condition mask '" + ITMask + "'");
5368 if (ITMask[i - 1] == 't')
5371 Operands.push_back(ARMOperand::CreateITMask(Mask, Loc));
5374 // FIXME: This is all a pretty gross hack. We should automatically handle
5375 // optional operands like this via tblgen.
5377 // Next, add the CCOut and ConditionCode operands, if needed.
5379 // For mnemonics which can ever incorporate a carry setting bit or predication
5380 // code, our matching model involves us always generating CCOut and
5381 // ConditionCode operands to match the mnemonic "as written" and then we let
5382 // the matcher deal with finding the right instruction or generating an
5383 // appropriate error.
5384 bool CanAcceptCarrySet, CanAcceptPredicationCode;
5385 getMnemonicAcceptInfo(Mnemonic, Name, CanAcceptCarrySet, CanAcceptPredicationCode);
5387 // If we had a carry-set on an instruction that can't do that, issue an
5389 if (!CanAcceptCarrySet && CarrySetting) {
5390 Parser.eatToEndOfStatement();
5391 return Error(NameLoc, "instruction '" + Mnemonic +
5392 "' can not set flags, but 's' suffix specified");
5394 // If we had a predication code on an instruction that can't do that, issue an
5396 if (!CanAcceptPredicationCode && PredicationCode != ARMCC::AL) {
5397 Parser.eatToEndOfStatement();
5398 return Error(NameLoc, "instruction '" + Mnemonic +
5399 "' is not predicable, but condition code specified");
5402 // Add the carry setting operand, if necessary.
5403 if (CanAcceptCarrySet) {
5404 SMLoc Loc = SMLoc::getFromPointer(NameLoc.getPointer() + Mnemonic.size());
5405 Operands.push_back(ARMOperand::CreateCCOut(CarrySetting ? ARM::CPSR : 0,
5409 // Add the predication code operand, if necessary.
5410 if (CanAcceptPredicationCode) {
5411 SMLoc Loc = SMLoc::getFromPointer(NameLoc.getPointer() + Mnemonic.size() +
5413 Operands.push_back(ARMOperand::CreateCondCode(
5414 ARMCC::CondCodes(PredicationCode), Loc));
5417 // Add the processor imod operand, if necessary.
5418 if (ProcessorIMod) {
5419 Operands.push_back(ARMOperand::CreateImm(
5420 MCConstantExpr::Create(ProcessorIMod, getContext()),
5424 // Add the remaining tokens in the mnemonic.
5425 while (Next != StringRef::npos) {
5427 Next = Name.find('.', Start + 1);
5428 StringRef ExtraToken = Name.slice(Start, Next);
5430 // Some NEON instructions have an optional datatype suffix that is
5431 // completely ignored. Check for that.
5432 if (isDataTypeToken(ExtraToken) &&
5433 doesIgnoreDataTypeSuffix(Mnemonic, ExtraToken))
5436 // For for ARM mode generate an error if the .n qualifier is used.
5437 if (ExtraToken == ".n" && !isThumb()) {
5438 SMLoc Loc = SMLoc::getFromPointer(NameLoc.getPointer() + Start);
5439 Parser.eatToEndOfStatement();
5440 return Error(Loc, "instruction with .n (narrow) qualifier not allowed in "
5444 // The .n qualifier is always discarded as that is what the tables
5445 // and matcher expect. In ARM mode the .w qualifier has no effect,
5446 // so discard it to avoid errors that can be caused by the matcher.
5447 if (ExtraToken != ".n" && (isThumb() || ExtraToken != ".w")) {
5448 SMLoc Loc = SMLoc::getFromPointer(NameLoc.getPointer() + Start);
5449 Operands.push_back(ARMOperand::CreateToken(ExtraToken, Loc));
5453 // Read the remaining operands.
5454 if (getLexer().isNot(AsmToken::EndOfStatement)) {
5455 // Read the first operand.
5456 if (parseOperand(Operands, Mnemonic)) {
5457 Parser.eatToEndOfStatement();
5461 while (getLexer().is(AsmToken::Comma)) {
5462 Parser.Lex(); // Eat the comma.
5464 // Parse and remember the operand.
5465 if (parseOperand(Operands, Mnemonic)) {
5466 Parser.eatToEndOfStatement();
5472 if (getLexer().isNot(AsmToken::EndOfStatement)) {
5473 SMLoc Loc = getLexer().getLoc();
5474 Parser.eatToEndOfStatement();
5475 return Error(Loc, "unexpected token in argument list");
5478 Parser.Lex(); // Consume the EndOfStatement
5480 if (RequireVFPRegisterListCheck) {
5481 ARMOperand &Op = static_cast<ARMOperand &>(*Operands.back());
5482 if (AcceptSinglePrecisionOnly && !Op.isSPRRegList())
5483 return Error(Op.getStartLoc(),
5484 "VFP/Neon single precision register expected");
5485 if (AcceptDoublePrecisionOnly && !Op.isDPRRegList())
5486 return Error(Op.getStartLoc(),
5487 "VFP/Neon double precision register expected");
5490 // Some instructions, mostly Thumb, have forms for the same mnemonic that
5491 // do and don't have a cc_out optional-def operand. With some spot-checks
5492 // of the operand list, we can figure out which variant we're trying to
5493 // parse and adjust accordingly before actually matching. We shouldn't ever
5494 // try to remove a cc_out operand that was explicitly set on the the
5495 // mnemonic, of course (CarrySetting == true). Reason number #317 the
5496 // table driven matcher doesn't fit well with the ARM instruction set.
5497 if (!CarrySetting && shouldOmitCCOutOperand(Mnemonic, Operands))
5498 Operands.erase(Operands.begin() + 1);
5500 // Some instructions have the same mnemonic, but don't always
5501 // have a predicate. Distinguish them here and delete the
5502 // predicate if needed.
5503 if (shouldOmitPredicateOperand(Mnemonic, Operands))
5504 Operands.erase(Operands.begin() + 1);
5506 // ARM mode 'blx' need special handling, as the register operand version
5507 // is predicable, but the label operand version is not. So, we can't rely
5508 // on the Mnemonic based checking to correctly figure out when to put
5509 // a k_CondCode operand in the list. If we're trying to match the label
5510 // version, remove the k_CondCode operand here.
5511 if (!isThumb() && Mnemonic == "blx" && Operands.size() == 3 &&
5512 static_cast<ARMOperand &>(*Operands[2]).isImm())
5513 Operands.erase(Operands.begin() + 1);
5515 // Adjust operands of ldrexd/strexd to MCK_GPRPair.
5516 // ldrexd/strexd require even/odd GPR pair. To enforce this constraint,
5517 // a single GPRPair reg operand is used in the .td file to replace the two
5518 // GPRs. However, when parsing from asm, the two GRPs cannot be automatically
5519 // expressed as a GPRPair, so we have to manually merge them.
5520 // FIXME: We would really like to be able to tablegen'erate this.
5521 if (!isThumb() && Operands.size() > 4 &&
5522 (Mnemonic == "ldrexd" || Mnemonic == "strexd" || Mnemonic == "ldaexd" ||
5523 Mnemonic == "stlexd")) {
5524 bool isLoad = (Mnemonic == "ldrexd" || Mnemonic == "ldaexd");
5525 unsigned Idx = isLoad ? 2 : 3;
5526 ARMOperand &Op1 = static_cast<ARMOperand &>(*Operands[Idx]);
5527 ARMOperand &Op2 = static_cast<ARMOperand &>(*Operands[Idx + 1]);
5529 const MCRegisterClass& MRC = MRI->getRegClass(ARM::GPRRegClassID);
5530 // Adjust only if Op1 and Op2 are GPRs.
5531 if (Op1.isReg() && Op2.isReg() && MRC.contains(Op1.getReg()) &&
5532 MRC.contains(Op2.getReg())) {
5533 unsigned Reg1 = Op1.getReg();
5534 unsigned Reg2 = Op2.getReg();
5535 unsigned Rt = MRI->getEncodingValue(Reg1);
5536 unsigned Rt2 = MRI->getEncodingValue(Reg2);
5538 // Rt2 must be Rt + 1 and Rt must be even.
5539 if (Rt + 1 != Rt2 || (Rt & 1)) {
5540 Error(Op2.getStartLoc(), isLoad
5541 ? "destination operands must be sequential"
5542 : "source operands must be sequential");
5545 unsigned NewReg = MRI->getMatchingSuperReg(Reg1, ARM::gsub_0,
5546 &(MRI->getRegClass(ARM::GPRPairRegClassID)));
5548 ARMOperand::CreateReg(NewReg, Op1.getStartLoc(), Op2.getEndLoc());
5549 Operands.erase(Operands.begin() + Idx + 1);
5553 // GNU Assembler extension (compatibility)
5554 if ((Mnemonic == "ldrd" || Mnemonic == "strd")) {
5555 ARMOperand &Op2 = static_cast<ARMOperand &>(*Operands[2]);
5556 ARMOperand &Op3 = static_cast<ARMOperand &>(*Operands[3]);
5558 assert(Op2.isReg() && "expected register argument");
5560 unsigned SuperReg = MRI->getMatchingSuperReg(
5561 Op2.getReg(), ARM::gsub_0, &MRI->getRegClass(ARM::GPRPairRegClassID));
5563 assert(SuperReg && "expected register pair");
5565 unsigned PairedReg = MRI->getSubReg(SuperReg, ARM::gsub_1);
5568 Operands.begin() + 3,
5569 ARMOperand::CreateReg(PairedReg, Op2.getStartLoc(), Op2.getEndLoc()));
5573 // FIXME: As said above, this is all a pretty gross hack. This instruction
5574 // does not fit with other "subs" and tblgen.
5575 // Adjust operands of B9.3.19 SUBS PC, LR, #imm (Thumb2) system instruction
5576 // so the Mnemonic is the original name "subs" and delete the predicate
5577 // operand so it will match the table entry.
5578 if (isThumbTwo() && Mnemonic == "sub" && Operands.size() == 6 &&
5579 static_cast<ARMOperand &>(*Operands[3]).isReg() &&
5580 static_cast<ARMOperand &>(*Operands[3]).getReg() == ARM::PC &&
5581 static_cast<ARMOperand &>(*Operands[4]).isReg() &&
5582 static_cast<ARMOperand &>(*Operands[4]).getReg() == ARM::LR &&
5583 static_cast<ARMOperand &>(*Operands[5]).isImm()) {
5584 Operands.front() = ARMOperand::CreateToken(Name, NameLoc);
5585 Operands.erase(Operands.begin() + 1);
5590 // Validate context-sensitive operand constraints.
5592 // return 'true' if register list contains non-low GPR registers,
5593 // 'false' otherwise. If Reg is in the register list or is HiReg, set
5594 // 'containsReg' to true.
5595 static bool checkLowRegisterList(MCInst Inst, unsigned OpNo, unsigned Reg,
5596 unsigned HiReg, bool &containsReg) {
5597 containsReg = false;
5598 for (unsigned i = OpNo; i < Inst.getNumOperands(); ++i) {
5599 unsigned OpReg = Inst.getOperand(i).getReg();
5602 // Anything other than a low register isn't legal here.
5603 if (!isARMLowRegister(OpReg) && (!HiReg || OpReg != HiReg))
5609 // Check if the specified regisgter is in the register list of the inst,
5610 // starting at the indicated operand number.
5611 static bool listContainsReg(MCInst &Inst, unsigned OpNo, unsigned Reg) {
5612 for (unsigned i = OpNo; i < Inst.getNumOperands(); ++i) {
5613 unsigned OpReg = Inst.getOperand(i).getReg();
5620 // Return true if instruction has the interesting property of being
5621 // allowed in IT blocks, but not being predicable.
5622 static bool instIsBreakpoint(const MCInst &Inst) {
5623 return Inst.getOpcode() == ARM::tBKPT ||
5624 Inst.getOpcode() == ARM::BKPT ||
5625 Inst.getOpcode() == ARM::tHLT ||
5626 Inst.getOpcode() == ARM::HLT;
5630 // FIXME: We would really like to be able to tablegen'erate this.
5631 bool ARMAsmParser::validateInstruction(MCInst &Inst,
5632 const OperandVector &Operands) {
5633 const MCInstrDesc &MCID = MII.get(Inst.getOpcode());
5634 SMLoc Loc = Operands[0]->getStartLoc();
5636 // Check the IT block state first.
5637 // NOTE: BKPT and HLT instructions have the interesting property of being
5638 // allowed in IT blocks, but not being predicable. They just always execute.
5639 if (inITBlock() && !instIsBreakpoint(Inst)) {
5641 if (ITState.FirstCond)
5642 ITState.FirstCond = false;
5644 Bit = (ITState.Mask >> (5 - ITState.CurPosition)) & 1;
5645 // The instruction must be predicable.
5646 if (!MCID.isPredicable())
5647 return Error(Loc, "instructions in IT block must be predicable");
5648 unsigned Cond = Inst.getOperand(MCID.findFirstPredOperandIdx()).getImm();
5649 unsigned ITCond = Bit ? ITState.Cond :
5650 ARMCC::getOppositeCondition(ITState.Cond);
5651 if (Cond != ITCond) {
5652 // Find the condition code Operand to get its SMLoc information.
5654 for (unsigned I = 1; I < Operands.size(); ++I)
5655 if (static_cast<ARMOperand &>(*Operands[I]).isCondCode())
5656 CondLoc = Operands[I]->getStartLoc();
5657 return Error(CondLoc, "incorrect condition in IT block; got '" +
5658 StringRef(ARMCondCodeToString(ARMCC::CondCodes(Cond))) +
5659 "', but expected '" +
5660 ARMCondCodeToString(ARMCC::CondCodes(ITCond)) + "'");
5662 // Check for non-'al' condition codes outside of the IT block.
5663 } else if (isThumbTwo() && MCID.isPredicable() &&
5664 Inst.getOperand(MCID.findFirstPredOperandIdx()).getImm() !=
5665 ARMCC::AL && Inst.getOpcode() != ARM::tBcc &&
5666 Inst.getOpcode() != ARM::t2Bcc)
5667 return Error(Loc, "predicated instructions must be in IT block");
5669 const unsigned Opcode = Inst.getOpcode();
5673 case ARM::LDRD_POST: {
5674 const unsigned RtReg = Inst.getOperand(0).getReg();
5677 if (RtReg == ARM::LR)
5678 return Error(Operands[3]->getStartLoc(),
5681 const unsigned Rt = MRI->getEncodingValue(RtReg);
5682 // Rt must be even-numbered.
5684 return Error(Operands[3]->getStartLoc(),
5685 "Rt must be even-numbered");
5687 // Rt2 must be Rt + 1.
5688 const unsigned Rt2 = MRI->getEncodingValue(Inst.getOperand(1).getReg());
5690 return Error(Operands[3]->getStartLoc(),
5691 "destination operands must be sequential");
5693 if (Opcode == ARM::LDRD_PRE || Opcode == ARM::LDRD_POST) {
5694 const unsigned Rn = MRI->getEncodingValue(Inst.getOperand(3).getReg());
5695 // For addressing modes with writeback, the base register needs to be
5696 // different from the destination registers.
5697 if (Rn == Rt || Rn == Rt2)
5698 return Error(Operands[3]->getStartLoc(),
5699 "base register needs to be different from destination "
5706 case ARM::t2LDRD_PRE:
5707 case ARM::t2LDRD_POST: {
5708 // Rt2 must be different from Rt.
5709 unsigned Rt = MRI->getEncodingValue(Inst.getOperand(0).getReg());
5710 unsigned Rt2 = MRI->getEncodingValue(Inst.getOperand(1).getReg());
5712 return Error(Operands[3]->getStartLoc(),
5713 "destination operands can't be identical");
5717 // Rt2 must be Rt + 1.
5718 unsigned Rt = MRI->getEncodingValue(Inst.getOperand(0).getReg());
5719 unsigned Rt2 = MRI->getEncodingValue(Inst.getOperand(1).getReg());
5721 return Error(Operands[3]->getStartLoc(),
5722 "source operands must be sequential");
5726 case ARM::STRD_POST: {
5727 // Rt2 must be Rt + 1.
5728 unsigned Rt = MRI->getEncodingValue(Inst.getOperand(1).getReg());
5729 unsigned Rt2 = MRI->getEncodingValue(Inst.getOperand(2).getReg());
5731 return Error(Operands[3]->getStartLoc(),
5732 "source operands must be sequential");
5737 // Width must be in range [1, 32-lsb].
5738 unsigned LSB = Inst.getOperand(2).getImm();
5739 unsigned Widthm1 = Inst.getOperand(3).getImm();
5740 if (Widthm1 >= 32 - LSB)
5741 return Error(Operands[5]->getStartLoc(),
5742 "bitfield width must be in range [1,32-lsb]");
5745 // Notionally handles ARM::tLDMIA_UPD too.
5747 // If we're parsing Thumb2, the .w variant is available and handles
5748 // most cases that are normally illegal for a Thumb1 LDM instruction.
5749 // We'll make the transformation in processInstruction() if necessary.
5751 // Thumb LDM instructions are writeback iff the base register is not
5752 // in the register list.
5753 unsigned Rn = Inst.getOperand(0).getReg();
5754 bool HasWritebackToken =
5755 (static_cast<ARMOperand &>(*Operands[3]).isToken() &&
5756 static_cast<ARMOperand &>(*Operands[3]).getToken() == "!");
5757 bool ListContainsBase;
5758 if (checkLowRegisterList(Inst, 3, Rn, 0, ListContainsBase) && !isThumbTwo())
5759 return Error(Operands[3 + HasWritebackToken]->getStartLoc(),
5760 "registers must be in range r0-r7");
5761 // If we should have writeback, then there should be a '!' token.
5762 if (!ListContainsBase && !HasWritebackToken && !isThumbTwo())
5763 return Error(Operands[2]->getStartLoc(),
5764 "writeback operator '!' expected");
5765 // If we should not have writeback, there must not be a '!'. This is
5766 // true even for the 32-bit wide encodings.
5767 if (ListContainsBase && HasWritebackToken)
5768 return Error(Operands[3]->getStartLoc(),
5769 "writeback operator '!' not allowed when base register "
5770 "in register list");
5774 case ARM::LDMIA_UPD:
5775 case ARM::LDMDB_UPD:
5776 case ARM::LDMIB_UPD:
5777 case ARM::LDMDA_UPD:
5778 // ARM variants loading and updating the same register are only officially
5779 // UNPREDICTABLE on v7 upwards. Goodness knows what they did before.
5783 case ARM::t2LDMIA_UPD:
5784 case ARM::t2LDMDB_UPD:
5785 case ARM::t2STMIA_UPD:
5786 case ARM::t2STMDB_UPD: {
5787 if (listContainsReg(Inst, 3, Inst.getOperand(0).getReg()))
5788 return Error(Operands.back()->getStartLoc(),
5789 "writeback register not allowed in register list");
5792 case ARM::sysLDMIA_UPD:
5793 case ARM::sysLDMDA_UPD:
5794 case ARM::sysLDMDB_UPD:
5795 case ARM::sysLDMIB_UPD:
5796 if (!listContainsReg(Inst, 3, ARM::PC))
5797 return Error(Operands[4]->getStartLoc(),
5798 "writeback register only allowed on system LDM "
5799 "if PC in register-list");
5801 case ARM::sysSTMIA_UPD:
5802 case ARM::sysSTMDA_UPD:
5803 case ARM::sysSTMDB_UPD:
5804 case ARM::sysSTMIB_UPD:
5805 return Error(Operands[2]->getStartLoc(),
5806 "system STM cannot have writeback register");
5808 // The second source operand must be the same register as the destination
5811 // In this case, we must directly check the parsed operands because the
5812 // cvtThumbMultiply() function is written in such a way that it guarantees
5813 // this first statement is always true for the new Inst. Essentially, the
5814 // destination is unconditionally copied into the second source operand
5815 // without checking to see if it matches what we actually parsed.
5816 if (Operands.size() == 6 && (((ARMOperand &)*Operands[3]).getReg() !=
5817 ((ARMOperand &)*Operands[5]).getReg()) &&
5818 (((ARMOperand &)*Operands[3]).getReg() !=
5819 ((ARMOperand &)*Operands[4]).getReg())) {
5820 return Error(Operands[3]->getStartLoc(),
5821 "destination register must match source register");
5825 // Like for ldm/stm, push and pop have hi-reg handling version in Thumb2,
5826 // so only issue a diagnostic for thumb1. The instructions will be
5827 // switched to the t2 encodings in processInstruction() if necessary.
5829 bool ListContainsBase;
5830 if (checkLowRegisterList(Inst, 2, 0, ARM::PC, ListContainsBase) &&
5832 return Error(Operands[2]->getStartLoc(),
5833 "registers must be in range r0-r7 or pc");
5837 bool ListContainsBase;
5838 if (checkLowRegisterList(Inst, 2, 0, ARM::LR, ListContainsBase) &&
5840 return Error(Operands[2]->getStartLoc(),
5841 "registers must be in range r0-r7 or lr");
5844 case ARM::tSTMIA_UPD: {
5845 bool ListContainsBase, InvalidLowList;
5846 InvalidLowList = checkLowRegisterList(Inst, 4, Inst.getOperand(0).getReg(),
5847 0, ListContainsBase);
5848 if (InvalidLowList && !isThumbTwo())
5849 return Error(Operands[4]->getStartLoc(),
5850 "registers must be in range r0-r7");
5852 // This would be converted to a 32-bit stm, but that's not valid if the
5853 // writeback register is in the list.
5854 if (InvalidLowList && ListContainsBase)
5855 return Error(Operands[4]->getStartLoc(),
5856 "writeback operator '!' not allowed when base register "
5857 "in register list");
5860 case ARM::tADDrSP: {
5861 // If the non-SP source operand and the destination operand are not the
5862 // same, we need thumb2 (for the wide encoding), or we have an error.
5863 if (!isThumbTwo() &&
5864 Inst.getOperand(0).getReg() != Inst.getOperand(2).getReg()) {
5865 return Error(Operands[4]->getStartLoc(),
5866 "source register must be the same as destination");
5870 // Final range checking for Thumb unconditional branch instructions.
5872 if (!(static_cast<ARMOperand &>(*Operands[2])).isSignedOffset<11, 1>())
5873 return Error(Operands[2]->getStartLoc(), "branch target out of range");
5876 int op = (Operands[2]->isImm()) ? 2 : 3;
5877 if (!static_cast<ARMOperand &>(*Operands[op]).isSignedOffset<24, 1>())
5878 return Error(Operands[op]->getStartLoc(), "branch target out of range");
5881 // Final range checking for Thumb conditional branch instructions.
5883 if (!static_cast<ARMOperand &>(*Operands[2]).isSignedOffset<8, 1>())
5884 return Error(Operands[2]->getStartLoc(), "branch target out of range");
5887 int Op = (Operands[2]->isImm()) ? 2 : 3;
5888 if (!static_cast<ARMOperand &>(*Operands[Op]).isSignedOffset<20, 1>())
5889 return Error(Operands[Op]->getStartLoc(), "branch target out of range");
5894 case ARM::t2MOVTi16:
5896 // We want to avoid misleadingly allowing something like "mov r0, <symbol>"
5897 // especially when we turn it into a movw and the expression <symbol> does
5898 // not have a :lower16: or :upper16 as part of the expression. We don't
5899 // want the behavior of silently truncating, which can be unexpected and
5900 // lead to bugs that are difficult to find since this is an easy mistake
5902 int i = (Operands[3]->isImm()) ? 3 : 4;
5903 ARMOperand &Op = static_cast<ARMOperand &>(*Operands[i]);
5904 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(Op.getImm());
5906 const MCExpr *E = dyn_cast<MCExpr>(Op.getImm());
5908 const ARMMCExpr *ARM16Expr = dyn_cast<ARMMCExpr>(E);
5909 if (!ARM16Expr || (ARM16Expr->getKind() != ARMMCExpr::VK_ARM_HI16 &&
5910 ARM16Expr->getKind() != ARMMCExpr::VK_ARM_LO16))
5913 "immediate expression for mov requires :lower16: or :upper16");
5921 static unsigned getRealVSTOpcode(unsigned Opc, unsigned &Spacing) {
5923 default: llvm_unreachable("unexpected opcode!");
5925 case ARM::VST1LNdWB_fixed_Asm_8: Spacing = 1; return ARM::VST1LNd8_UPD;
5926 case ARM::VST1LNdWB_fixed_Asm_16: Spacing = 1; return ARM::VST1LNd16_UPD;
5927 case ARM::VST1LNdWB_fixed_Asm_32: Spacing = 1; return ARM::VST1LNd32_UPD;
5928 case ARM::VST1LNdWB_register_Asm_8: Spacing = 1; return ARM::VST1LNd8_UPD;
5929 case ARM::VST1LNdWB_register_Asm_16: Spacing = 1; return ARM::VST1LNd16_UPD;
5930 case ARM::VST1LNdWB_register_Asm_32: Spacing = 1; return ARM::VST1LNd32_UPD;
5931 case ARM::VST1LNdAsm_8: Spacing = 1; return ARM::VST1LNd8;
5932 case ARM::VST1LNdAsm_16: Spacing = 1; return ARM::VST1LNd16;
5933 case ARM::VST1LNdAsm_32: Spacing = 1; return ARM::VST1LNd32;
5936 case ARM::VST2LNdWB_fixed_Asm_8: Spacing = 1; return ARM::VST2LNd8_UPD;
5937 case ARM::VST2LNdWB_fixed_Asm_16: Spacing = 1; return ARM::VST2LNd16_UPD;
5938 case ARM::VST2LNdWB_fixed_Asm_32: Spacing = 1; return ARM::VST2LNd32_UPD;
5939 case ARM::VST2LNqWB_fixed_Asm_16: Spacing = 2; return ARM::VST2LNq16_UPD;
5940 case ARM::VST2LNqWB_fixed_Asm_32: Spacing = 2; return ARM::VST2LNq32_UPD;
5942 case ARM::VST2LNdWB_register_Asm_8: Spacing = 1; return ARM::VST2LNd8_UPD;
5943 case ARM::VST2LNdWB_register_Asm_16: Spacing = 1; return ARM::VST2LNd16_UPD;
5944 case ARM::VST2LNdWB_register_Asm_32: Spacing = 1; return ARM::VST2LNd32_UPD;
5945 case ARM::VST2LNqWB_register_Asm_16: Spacing = 2; return ARM::VST2LNq16_UPD;
5946 case ARM::VST2LNqWB_register_Asm_32: Spacing = 2; return ARM::VST2LNq32_UPD;
5948 case ARM::VST2LNdAsm_8: Spacing = 1; return ARM::VST2LNd8;
5949 case ARM::VST2LNdAsm_16: Spacing = 1; return ARM::VST2LNd16;
5950 case ARM::VST2LNdAsm_32: Spacing = 1; return ARM::VST2LNd32;
5951 case ARM::VST2LNqAsm_16: Spacing = 2; return ARM::VST2LNq16;
5952 case ARM::VST2LNqAsm_32: Spacing = 2; return ARM::VST2LNq32;
5955 case ARM::VST3LNdWB_fixed_Asm_8: Spacing = 1; return ARM::VST3LNd8_UPD;
5956 case ARM::VST3LNdWB_fixed_Asm_16: Spacing = 1; return ARM::VST3LNd16_UPD;
5957 case ARM::VST3LNdWB_fixed_Asm_32: Spacing = 1; return ARM::VST3LNd32_UPD;
5958 case ARM::VST3LNqWB_fixed_Asm_16: Spacing = 1; return ARM::VST3LNq16_UPD;
5959 case ARM::VST3LNqWB_fixed_Asm_32: Spacing = 2; return ARM::VST3LNq32_UPD;
5960 case ARM::VST3LNdWB_register_Asm_8: Spacing = 1; return ARM::VST3LNd8_UPD;
5961 case ARM::VST3LNdWB_register_Asm_16: Spacing = 1; return ARM::VST3LNd16_UPD;
5962 case ARM::VST3LNdWB_register_Asm_32: Spacing = 1; return ARM::VST3LNd32_UPD;
5963 case ARM::VST3LNqWB_register_Asm_16: Spacing = 2; return ARM::VST3LNq16_UPD;
5964 case ARM::VST3LNqWB_register_Asm_32: Spacing = 2; return ARM::VST3LNq32_UPD;
5965 case ARM::VST3LNdAsm_8: Spacing = 1; return ARM::VST3LNd8;
5966 case ARM::VST3LNdAsm_16: Spacing = 1; return ARM::VST3LNd16;
5967 case ARM::VST3LNdAsm_32: Spacing = 1; return ARM::VST3LNd32;
5968 case ARM::VST3LNqAsm_16: Spacing = 2; return ARM::VST3LNq16;
5969 case ARM::VST3LNqAsm_32: Spacing = 2; return ARM::VST3LNq32;
5972 case ARM::VST3dWB_fixed_Asm_8: Spacing = 1; return ARM::VST3d8_UPD;
5973 case ARM::VST3dWB_fixed_Asm_16: Spacing = 1; return ARM::VST3d16_UPD;
5974 case ARM::VST3dWB_fixed_Asm_32: Spacing = 1; return ARM::VST3d32_UPD;
5975 case ARM::VST3qWB_fixed_Asm_8: Spacing = 2; return ARM::VST3q8_UPD;
5976 case ARM::VST3qWB_fixed_Asm_16: Spacing = 2; return ARM::VST3q16_UPD;
5977 case ARM::VST3qWB_fixed_Asm_32: Spacing = 2; return ARM::VST3q32_UPD;
5978 case ARM::VST3dWB_register_Asm_8: Spacing = 1; return ARM::VST3d8_UPD;
5979 case ARM::VST3dWB_register_Asm_16: Spacing = 1; return ARM::VST3d16_UPD;
5980 case ARM::VST3dWB_register_Asm_32: Spacing = 1; return ARM::VST3d32_UPD;
5981 case ARM::VST3qWB_register_Asm_8: Spacing = 2; return ARM::VST3q8_UPD;
5982 case ARM::VST3qWB_register_Asm_16: Spacing = 2; return ARM::VST3q16_UPD;
5983 case ARM::VST3qWB_register_Asm_32: Spacing = 2; return ARM::VST3q32_UPD;
5984 case ARM::VST3dAsm_8: Spacing = 1; return ARM::VST3d8;
5985 case ARM::VST3dAsm_16: Spacing = 1; return ARM::VST3d16;
5986 case ARM::VST3dAsm_32: Spacing = 1; return ARM::VST3d32;
5987 case ARM::VST3qAsm_8: Spacing = 2; return ARM::VST3q8;
5988 case ARM::VST3qAsm_16: Spacing = 2; return ARM::VST3q16;
5989 case ARM::VST3qAsm_32: Spacing = 2; return ARM::VST3q32;
5992 case ARM::VST4LNdWB_fixed_Asm_8: Spacing = 1; return ARM::VST4LNd8_UPD;
5993 case ARM::VST4LNdWB_fixed_Asm_16: Spacing = 1; return ARM::VST4LNd16_UPD;
5994 case ARM::VST4LNdWB_fixed_Asm_32: Spacing = 1; return ARM::VST4LNd32_UPD;
5995 case ARM::VST4LNqWB_fixed_Asm_16: Spacing = 1; return ARM::VST4LNq16_UPD;
5996 case ARM::VST4LNqWB_fixed_Asm_32: Spacing = 2; return ARM::VST4LNq32_UPD;
5997 case ARM::VST4LNdWB_register_Asm_8: Spacing = 1; return ARM::VST4LNd8_UPD;
5998 case ARM::VST4LNdWB_register_Asm_16: Spacing = 1; return ARM::VST4LNd16_UPD;
5999 case ARM::VST4LNdWB_register_Asm_32: Spacing = 1; return ARM::VST4LNd32_UPD;
6000 case ARM::VST4LNqWB_register_Asm_16: Spacing = 2; return ARM::VST4LNq16_UPD;
6001 case ARM::VST4LNqWB_register_Asm_32: Spacing = 2; return ARM::VST4LNq32_UPD;
6002 case ARM::VST4LNdAsm_8: Spacing = 1; return ARM::VST4LNd8;
6003 case ARM::VST4LNdAsm_16: Spacing = 1; return ARM::VST4LNd16;
6004 case ARM::VST4LNdAsm_32: Spacing = 1; return ARM::VST4LNd32;
6005 case ARM::VST4LNqAsm_16: Spacing = 2; return ARM::VST4LNq16;
6006 case ARM::VST4LNqAsm_32: Spacing = 2; return ARM::VST4LNq32;
6009 case ARM::VST4dWB_fixed_Asm_8: Spacing = 1; return ARM::VST4d8_UPD;
6010 case ARM::VST4dWB_fixed_Asm_16: Spacing = 1; return ARM::VST4d16_UPD;
6011 case ARM::VST4dWB_fixed_Asm_32: Spacing = 1; return ARM::VST4d32_UPD;
6012 case ARM::VST4qWB_fixed_Asm_8: Spacing = 2; return ARM::VST4q8_UPD;
6013 case ARM::VST4qWB_fixed_Asm_16: Spacing = 2; return ARM::VST4q16_UPD;
6014 case ARM::VST4qWB_fixed_Asm_32: Spacing = 2; return ARM::VST4q32_UPD;
6015 case ARM::VST4dWB_register_Asm_8: Spacing = 1; return ARM::VST4d8_UPD;
6016 case ARM::VST4dWB_register_Asm_16: Spacing = 1; return ARM::VST4d16_UPD;
6017 case ARM::VST4dWB_register_Asm_32: Spacing = 1; return ARM::VST4d32_UPD;
6018 case ARM::VST4qWB_register_Asm_8: Spacing = 2; return ARM::VST4q8_UPD;
6019 case ARM::VST4qWB_register_Asm_16: Spacing = 2; return ARM::VST4q16_UPD;
6020 case ARM::VST4qWB_register_Asm_32: Spacing = 2; return ARM::VST4q32_UPD;
6021 case ARM::VST4dAsm_8: Spacing = 1; return ARM::VST4d8;
6022 case ARM::VST4dAsm_16: Spacing = 1; return ARM::VST4d16;
6023 case ARM::VST4dAsm_32: Spacing = 1; return ARM::VST4d32;
6024 case ARM::VST4qAsm_8: Spacing = 2; return ARM::VST4q8;
6025 case ARM::VST4qAsm_16: Spacing = 2; return ARM::VST4q16;
6026 case ARM::VST4qAsm_32: Spacing = 2; return ARM::VST4q32;
6030 static unsigned getRealVLDOpcode(unsigned Opc, unsigned &Spacing) {
6032 default: llvm_unreachable("unexpected opcode!");
6034 case ARM::VLD1LNdWB_fixed_Asm_8: Spacing = 1; return ARM::VLD1LNd8_UPD;
6035 case ARM::VLD1LNdWB_fixed_Asm_16: Spacing = 1; return ARM::VLD1LNd16_UPD;
6036 case ARM::VLD1LNdWB_fixed_Asm_32: Spacing = 1; return ARM::VLD1LNd32_UPD;
6037 case ARM::VLD1LNdWB_register_Asm_8: Spacing = 1; return ARM::VLD1LNd8_UPD;
6038 case ARM::VLD1LNdWB_register_Asm_16: Spacing = 1; return ARM::VLD1LNd16_UPD;
6039 case ARM::VLD1LNdWB_register_Asm_32: Spacing = 1; return ARM::VLD1LNd32_UPD;
6040 case ARM::VLD1LNdAsm_8: Spacing = 1; return ARM::VLD1LNd8;
6041 case ARM::VLD1LNdAsm_16: Spacing = 1; return ARM::VLD1LNd16;
6042 case ARM::VLD1LNdAsm_32: Spacing = 1; return ARM::VLD1LNd32;
6045 case ARM::VLD2LNdWB_fixed_Asm_8: Spacing = 1; return ARM::VLD2LNd8_UPD;
6046 case ARM::VLD2LNdWB_fixed_Asm_16: Spacing = 1; return ARM::VLD2LNd16_UPD;
6047 case ARM::VLD2LNdWB_fixed_Asm_32: Spacing = 1; return ARM::VLD2LNd32_UPD;
6048 case ARM::VLD2LNqWB_fixed_Asm_16: Spacing = 1; return ARM::VLD2LNq16_UPD;
6049 case ARM::VLD2LNqWB_fixed_Asm_32: Spacing = 2; return ARM::VLD2LNq32_UPD;
6050 case ARM::VLD2LNdWB_register_Asm_8: Spacing = 1; return ARM::VLD2LNd8_UPD;
6051 case ARM::VLD2LNdWB_register_Asm_16: Spacing = 1; return ARM::VLD2LNd16_UPD;
6052 case ARM::VLD2LNdWB_register_Asm_32: Spacing = 1; return ARM::VLD2LNd32_UPD;
6053 case ARM::VLD2LNqWB_register_Asm_16: Spacing = 2; return ARM::VLD2LNq16_UPD;
6054 case ARM::VLD2LNqWB_register_Asm_32: Spacing = 2; return ARM::VLD2LNq32_UPD;
6055 case ARM::VLD2LNdAsm_8: Spacing = 1; return ARM::VLD2LNd8;
6056 case ARM::VLD2LNdAsm_16: Spacing = 1; return ARM::VLD2LNd16;
6057 case ARM::VLD2LNdAsm_32: Spacing = 1; return ARM::VLD2LNd32;
6058 case ARM::VLD2LNqAsm_16: Spacing = 2; return ARM::VLD2LNq16;
6059 case ARM::VLD2LNqAsm_32: Spacing = 2; return ARM::VLD2LNq32;
6062 case ARM::VLD3DUPdWB_fixed_Asm_8: Spacing = 1; return ARM::VLD3DUPd8_UPD;
6063 case ARM::VLD3DUPdWB_fixed_Asm_16: Spacing = 1; return ARM::VLD3DUPd16_UPD;
6064 case ARM::VLD3DUPdWB_fixed_Asm_32: Spacing = 1; return ARM::VLD3DUPd32_UPD;
6065 case ARM::VLD3DUPqWB_fixed_Asm_8: Spacing = 1; return ARM::VLD3DUPq8_UPD;
6066 case ARM::VLD3DUPqWB_fixed_Asm_16: Spacing = 2; return ARM::VLD3DUPq16_UPD;
6067 case ARM::VLD3DUPqWB_fixed_Asm_32: Spacing = 2; return ARM::VLD3DUPq32_UPD;
6068 case ARM::VLD3DUPdWB_register_Asm_8: Spacing = 1; return ARM::VLD3DUPd8_UPD;
6069 case ARM::VLD3DUPdWB_register_Asm_16: Spacing = 1; return ARM::VLD3DUPd16_UPD;
6070 case ARM::VLD3DUPdWB_register_Asm_32: Spacing = 1; return ARM::VLD3DUPd32_UPD;
6071 case ARM::VLD3DUPqWB_register_Asm_8: Spacing = 2; return ARM::VLD3DUPq8_UPD;
6072 case ARM::VLD3DUPqWB_register_Asm_16: Spacing = 2; return ARM::VLD3DUPq16_UPD;
6073 case ARM::VLD3DUPqWB_register_Asm_32: Spacing = 2; return ARM::VLD3DUPq32_UPD;
6074 case ARM::VLD3DUPdAsm_8: Spacing = 1; return ARM::VLD3DUPd8;
6075 case ARM::VLD3DUPdAsm_16: Spacing = 1; return ARM::VLD3DUPd16;
6076 case ARM::VLD3DUPdAsm_32: Spacing = 1; return ARM::VLD3DUPd32;
6077 case ARM::VLD3DUPqAsm_8: Spacing = 2; return ARM::VLD3DUPq8;
6078 case ARM::VLD3DUPqAsm_16: Spacing = 2; return ARM::VLD3DUPq16;
6079 case ARM::VLD3DUPqAsm_32: Spacing = 2; return ARM::VLD3DUPq32;
6082 case ARM::VLD3LNdWB_fixed_Asm_8: Spacing = 1; return ARM::VLD3LNd8_UPD;
6083 case ARM::VLD3LNdWB_fixed_Asm_16: Spacing = 1; return ARM::VLD3LNd16_UPD;
6084 case ARM::VLD3LNdWB_fixed_Asm_32: Spacing = 1; return ARM::VLD3LNd32_UPD;
6085 case ARM::VLD3LNqWB_fixed_Asm_16: Spacing = 1; return ARM::VLD3LNq16_UPD;
6086 case ARM::VLD3LNqWB_fixed_Asm_32: Spacing = 2; return ARM::VLD3LNq32_UPD;
6087 case ARM::VLD3LNdWB_register_Asm_8: Spacing = 1; return ARM::VLD3LNd8_UPD;
6088 case ARM::VLD3LNdWB_register_Asm_16: Spacing = 1; return ARM::VLD3LNd16_UPD;
6089 case ARM::VLD3LNdWB_register_Asm_32: Spacing = 1; return ARM::VLD3LNd32_UPD;
6090 case ARM::VLD3LNqWB_register_Asm_16: Spacing = 2; return ARM::VLD3LNq16_UPD;
6091 case ARM::VLD3LNqWB_register_Asm_32: Spacing = 2; return ARM::VLD3LNq32_UPD;
6092 case ARM::VLD3LNdAsm_8: Spacing = 1; return ARM::VLD3LNd8;
6093 case ARM::VLD3LNdAsm_16: Spacing = 1; return ARM::VLD3LNd16;
6094 case ARM::VLD3LNdAsm_32: Spacing = 1; return ARM::VLD3LNd32;
6095 case ARM::VLD3LNqAsm_16: Spacing = 2; return ARM::VLD3LNq16;
6096 case ARM::VLD3LNqAsm_32: Spacing = 2; return ARM::VLD3LNq32;
6099 case ARM::VLD3dWB_fixed_Asm_8: Spacing = 1; return ARM::VLD3d8_UPD;
6100 case ARM::VLD3dWB_fixed_Asm_16: Spacing = 1; return ARM::VLD3d16_UPD;
6101 case ARM::VLD3dWB_fixed_Asm_32: Spacing = 1; return ARM::VLD3d32_UPD;
6102 case ARM::VLD3qWB_fixed_Asm_8: Spacing = 2; return ARM::VLD3q8_UPD;
6103 case ARM::VLD3qWB_fixed_Asm_16: Spacing = 2; return ARM::VLD3q16_UPD;
6104 case ARM::VLD3qWB_fixed_Asm_32: Spacing = 2; return ARM::VLD3q32_UPD;
6105 case ARM::VLD3dWB_register_Asm_8: Spacing = 1; return ARM::VLD3d8_UPD;
6106 case ARM::VLD3dWB_register_Asm_16: Spacing = 1; return ARM::VLD3d16_UPD;
6107 case ARM::VLD3dWB_register_Asm_32: Spacing = 1; return ARM::VLD3d32_UPD;
6108 case ARM::VLD3qWB_register_Asm_8: Spacing = 2; return ARM::VLD3q8_UPD;
6109 case ARM::VLD3qWB_register_Asm_16: Spacing = 2; return ARM::VLD3q16_UPD;
6110 case ARM::VLD3qWB_register_Asm_32: Spacing = 2; return ARM::VLD3q32_UPD;
6111 case ARM::VLD3dAsm_8: Spacing = 1; return ARM::VLD3d8;
6112 case ARM::VLD3dAsm_16: Spacing = 1; return ARM::VLD3d16;
6113 case ARM::VLD3dAsm_32: Spacing = 1; return ARM::VLD3d32;
6114 case ARM::VLD3qAsm_8: Spacing = 2; return ARM::VLD3q8;
6115 case ARM::VLD3qAsm_16: Spacing = 2; return ARM::VLD3q16;
6116 case ARM::VLD3qAsm_32: Spacing = 2; return ARM::VLD3q32;
6119 case ARM::VLD4LNdWB_fixed_Asm_8: Spacing = 1; return ARM::VLD4LNd8_UPD;
6120 case ARM::VLD4LNdWB_fixed_Asm_16: Spacing = 1; return ARM::VLD4LNd16_UPD;
6121 case ARM::VLD4LNdWB_fixed_Asm_32: Spacing = 1; return ARM::VLD4LNd32_UPD;
6122 case ARM::VLD4LNqWB_fixed_Asm_16: Spacing = 2; return ARM::VLD4LNq16_UPD;
6123 case ARM::VLD4LNqWB_fixed_Asm_32: Spacing = 2; return ARM::VLD4LNq32_UPD;
6124 case ARM::VLD4LNdWB_register_Asm_8: Spacing = 1; return ARM::VLD4LNd8_UPD;
6125 case ARM::VLD4LNdWB_register_Asm_16: Spacing = 1; return ARM::VLD4LNd16_UPD;
6126 case ARM::VLD4LNdWB_register_Asm_32: Spacing = 1; return ARM::VLD4LNd32_UPD;
6127 case ARM::VLD4LNqWB_register_Asm_16: Spacing = 2; return ARM::VLD4LNq16_UPD;
6128 case ARM::VLD4LNqWB_register_Asm_32: Spacing = 2; return ARM::VLD4LNq32_UPD;
6129 case ARM::VLD4LNdAsm_8: Spacing = 1; return ARM::VLD4LNd8;
6130 case ARM::VLD4LNdAsm_16: Spacing = 1; return ARM::VLD4LNd16;
6131 case ARM::VLD4LNdAsm_32: Spacing = 1; return ARM::VLD4LNd32;
6132 case ARM::VLD4LNqAsm_16: Spacing = 2; return ARM::VLD4LNq16;
6133 case ARM::VLD4LNqAsm_32: Spacing = 2; return ARM::VLD4LNq32;
6136 case ARM::VLD4DUPdWB_fixed_Asm_8: Spacing = 1; return ARM::VLD4DUPd8_UPD;
6137 case ARM::VLD4DUPdWB_fixed_Asm_16: Spacing = 1; return ARM::VLD4DUPd16_UPD;
6138 case ARM::VLD4DUPdWB_fixed_Asm_32: Spacing = 1; return ARM::VLD4DUPd32_UPD;
6139 case ARM::VLD4DUPqWB_fixed_Asm_8: Spacing = 1; return ARM::VLD4DUPq8_UPD;
6140 case ARM::VLD4DUPqWB_fixed_Asm_16: Spacing = 1; return ARM::VLD4DUPq16_UPD;
6141 case ARM::VLD4DUPqWB_fixed_Asm_32: Spacing = 2; return ARM::VLD4DUPq32_UPD;
6142 case ARM::VLD4DUPdWB_register_Asm_8: Spacing = 1; return ARM::VLD4DUPd8_UPD;
6143 case ARM::VLD4DUPdWB_register_Asm_16: Spacing = 1; return ARM::VLD4DUPd16_UPD;
6144 case ARM::VLD4DUPdWB_register_Asm_32: Spacing = 1; return ARM::VLD4DUPd32_UPD;
6145 case ARM::VLD4DUPqWB_register_Asm_8: Spacing = 2; return ARM::VLD4DUPq8_UPD;
6146 case ARM::VLD4DUPqWB_register_Asm_16: Spacing = 2; return ARM::VLD4DUPq16_UPD;
6147 case ARM::VLD4DUPqWB_register_Asm_32: Spacing = 2; return ARM::VLD4DUPq32_UPD;
6148 case ARM::VLD4DUPdAsm_8: Spacing = 1; return ARM::VLD4DUPd8;
6149 case ARM::VLD4DUPdAsm_16: Spacing = 1; return ARM::VLD4DUPd16;
6150 case ARM::VLD4DUPdAsm_32: Spacing = 1; return ARM::VLD4DUPd32;
6151 case ARM::VLD4DUPqAsm_8: Spacing = 2; return ARM::VLD4DUPq8;
6152 case ARM::VLD4DUPqAsm_16: Spacing = 2; return ARM::VLD4DUPq16;
6153 case ARM::VLD4DUPqAsm_32: Spacing = 2; return ARM::VLD4DUPq32;
6156 case ARM::VLD4dWB_fixed_Asm_8: Spacing = 1; return ARM::VLD4d8_UPD;
6157 case ARM::VLD4dWB_fixed_Asm_16: Spacing = 1; return ARM::VLD4d16_UPD;
6158 case ARM::VLD4dWB_fixed_Asm_32: Spacing = 1; return ARM::VLD4d32_UPD;
6159 case ARM::VLD4qWB_fixed_Asm_8: Spacing = 2; return ARM::VLD4q8_UPD;
6160 case ARM::VLD4qWB_fixed_Asm_16: Spacing = 2; return ARM::VLD4q16_UPD;
6161 case ARM::VLD4qWB_fixed_Asm_32: Spacing = 2; return ARM::VLD4q32_UPD;
6162 case ARM::VLD4dWB_register_Asm_8: Spacing = 1; return ARM::VLD4d8_UPD;
6163 case ARM::VLD4dWB_register_Asm_16: Spacing = 1; return ARM::VLD4d16_UPD;
6164 case ARM::VLD4dWB_register_Asm_32: Spacing = 1; return ARM::VLD4d32_UPD;
6165 case ARM::VLD4qWB_register_Asm_8: Spacing = 2; return ARM::VLD4q8_UPD;
6166 case ARM::VLD4qWB_register_Asm_16: Spacing = 2; return ARM::VLD4q16_UPD;
6167 case ARM::VLD4qWB_register_Asm_32: Spacing = 2; return ARM::VLD4q32_UPD;
6168 case ARM::VLD4dAsm_8: Spacing = 1; return ARM::VLD4d8;
6169 case ARM::VLD4dAsm_16: Spacing = 1; return ARM::VLD4d16;
6170 case ARM::VLD4dAsm_32: Spacing = 1; return ARM::VLD4d32;
6171 case ARM::VLD4qAsm_8: Spacing = 2; return ARM::VLD4q8;
6172 case ARM::VLD4qAsm_16: Spacing = 2; return ARM::VLD4q16;
6173 case ARM::VLD4qAsm_32: Spacing = 2; return ARM::VLD4q32;
6177 bool ARMAsmParser::processInstruction(MCInst &Inst,
6178 const OperandVector &Operands,
6180 switch (Inst.getOpcode()) {
6181 // Alias for alternate form of 'ldr{,b}t Rt, [Rn], #imm' instruction.
6182 case ARM::LDRT_POST:
6183 case ARM::LDRBT_POST: {
6184 const unsigned Opcode =
6185 (Inst.getOpcode() == ARM::LDRT_POST) ? ARM::LDRT_POST_IMM
6186 : ARM::LDRBT_POST_IMM;
6188 TmpInst.setOpcode(Opcode);
6189 TmpInst.addOperand(Inst.getOperand(0));
6190 TmpInst.addOperand(Inst.getOperand(1));
6191 TmpInst.addOperand(Inst.getOperand(1));
6192 TmpInst.addOperand(MCOperand::CreateReg(0));
6193 TmpInst.addOperand(MCOperand::CreateImm(0));
6194 TmpInst.addOperand(Inst.getOperand(2));
6195 TmpInst.addOperand(Inst.getOperand(3));
6199 // Alias for alternate form of 'str{,b}t Rt, [Rn], #imm' instruction.
6200 case ARM::STRT_POST:
6201 case ARM::STRBT_POST: {
6202 const unsigned Opcode =
6203 (Inst.getOpcode() == ARM::STRT_POST) ? ARM::STRT_POST_IMM
6204 : ARM::STRBT_POST_IMM;
6206 TmpInst.setOpcode(Opcode);
6207 TmpInst.addOperand(Inst.getOperand(1));
6208 TmpInst.addOperand(Inst.getOperand(0));
6209 TmpInst.addOperand(Inst.getOperand(1));
6210 TmpInst.addOperand(MCOperand::CreateReg(0));
6211 TmpInst.addOperand(MCOperand::CreateImm(0));
6212 TmpInst.addOperand(Inst.getOperand(2));
6213 TmpInst.addOperand(Inst.getOperand(3));
6217 // Alias for alternate form of 'ADR Rd, #imm' instruction.
6219 if (Inst.getOperand(1).getReg() != ARM::PC ||
6220 Inst.getOperand(5).getReg() != 0 ||
6221 !(Inst.getOperand(2).isExpr() || Inst.getOperand(2).isImm()))
6224 TmpInst.setOpcode(ARM::ADR);
6225 TmpInst.addOperand(Inst.getOperand(0));
6226 if (Inst.getOperand(2).isImm()) {
6227 TmpInst.addOperand(Inst.getOperand(2));
6229 // Turn PC-relative expression into absolute expression.
6230 // Reading PC provides the start of the current instruction + 8 and
6231 // the transform to adr is biased by that.
6232 MCSymbol *Dot = getContext().CreateTempSymbol();
6234 const MCExpr *OpExpr = Inst.getOperand(2).getExpr();
6235 const MCExpr *InstPC = MCSymbolRefExpr::Create(Dot,
6236 MCSymbolRefExpr::VK_None,
6238 const MCExpr *Const8 = MCConstantExpr::Create(8, getContext());
6239 const MCExpr *ReadPC = MCBinaryExpr::CreateAdd(InstPC, Const8,
6241 const MCExpr *FixupAddr = MCBinaryExpr::CreateAdd(ReadPC, OpExpr,
6243 TmpInst.addOperand(MCOperand::CreateExpr(FixupAddr));
6245 TmpInst.addOperand(Inst.getOperand(3));
6246 TmpInst.addOperand(Inst.getOperand(4));
6250 // Aliases for alternate PC+imm syntax of LDR instructions.
6251 case ARM::t2LDRpcrel:
6252 // Select the narrow version if the immediate will fit.
6253 if (Inst.getOperand(1).getImm() > 0 &&
6254 Inst.getOperand(1).getImm() <= 0xff &&
6255 !(static_cast<ARMOperand &>(*Operands[2]).isToken() &&
6256 static_cast<ARMOperand &>(*Operands[2]).getToken() == ".w"))
6257 Inst.setOpcode(ARM::tLDRpci);
6259 Inst.setOpcode(ARM::t2LDRpci);
6261 case ARM::t2LDRBpcrel:
6262 Inst.setOpcode(ARM::t2LDRBpci);
6264 case ARM::t2LDRHpcrel:
6265 Inst.setOpcode(ARM::t2LDRHpci);
6267 case ARM::t2LDRSBpcrel:
6268 Inst.setOpcode(ARM::t2LDRSBpci);
6270 case ARM::t2LDRSHpcrel:
6271 Inst.setOpcode(ARM::t2LDRSHpci);
6273 // Handle NEON VST complex aliases.
6274 case ARM::VST1LNdWB_register_Asm_8:
6275 case ARM::VST1LNdWB_register_Asm_16:
6276 case ARM::VST1LNdWB_register_Asm_32: {
6278 // Shuffle the operands around so the lane index operand is in the
6281 TmpInst.setOpcode(getRealVSTOpcode(Inst.getOpcode(), Spacing));
6282 TmpInst.addOperand(Inst.getOperand(2)); // Rn_wb
6283 TmpInst.addOperand(Inst.getOperand(2)); // Rn
6284 TmpInst.addOperand(Inst.getOperand(3)); // alignment
6285 TmpInst.addOperand(Inst.getOperand(4)); // Rm
6286 TmpInst.addOperand(Inst.getOperand(0)); // Vd
6287 TmpInst.addOperand(Inst.getOperand(1)); // lane
6288 TmpInst.addOperand(Inst.getOperand(5)); // CondCode
6289 TmpInst.addOperand(Inst.getOperand(6));
6294 case ARM::VST2LNdWB_register_Asm_8:
6295 case ARM::VST2LNdWB_register_Asm_16:
6296 case ARM::VST2LNdWB_register_Asm_32:
6297 case ARM::VST2LNqWB_register_Asm_16:
6298 case ARM::VST2LNqWB_register_Asm_32: {
6300 // Shuffle the operands around so the lane index operand is in the
6303 TmpInst.setOpcode(getRealVSTOpcode(Inst.getOpcode(), Spacing));
6304 TmpInst.addOperand(Inst.getOperand(2)); // Rn_wb
6305 TmpInst.addOperand(Inst.getOperand(2)); // Rn
6306 TmpInst.addOperand(Inst.getOperand(3)); // alignment
6307 TmpInst.addOperand(Inst.getOperand(4)); // Rm
6308 TmpInst.addOperand(Inst.getOperand(0)); // Vd
6309 TmpInst.addOperand(MCOperand::CreateReg(Inst.getOperand(0).getReg() +
6311 TmpInst.addOperand(Inst.getOperand(1)); // lane
6312 TmpInst.addOperand(Inst.getOperand(5)); // CondCode
6313 TmpInst.addOperand(Inst.getOperand(6));
6318 case ARM::VST3LNdWB_register_Asm_8:
6319 case ARM::VST3LNdWB_register_Asm_16:
6320 case ARM::VST3LNdWB_register_Asm_32:
6321 case ARM::VST3LNqWB_register_Asm_16:
6322 case ARM::VST3LNqWB_register_Asm_32: {
6324 // Shuffle the operands around so the lane index operand is in the
6327 TmpInst.setOpcode(getRealVSTOpcode(Inst.getOpcode(), Spacing));
6328 TmpInst.addOperand(Inst.getOperand(2)); // Rn_wb
6329 TmpInst.addOperand(Inst.getOperand(2)); // Rn
6330 TmpInst.addOperand(Inst.getOperand(3)); // alignment
6331 TmpInst.addOperand(Inst.getOperand(4)); // Rm
6332 TmpInst.addOperand(Inst.getOperand(0)); // Vd
6333 TmpInst.addOperand(MCOperand::CreateReg(Inst.getOperand(0).getReg() +
6335 TmpInst.addOperand(MCOperand::CreateReg(Inst.getOperand(0).getReg() +
6337 TmpInst.addOperand(Inst.getOperand(1)); // lane
6338 TmpInst.addOperand(Inst.getOperand(5)); // CondCode
6339 TmpInst.addOperand(Inst.getOperand(6));
6344 case ARM::VST4LNdWB_register_Asm_8:
6345 case ARM::VST4LNdWB_register_Asm_16:
6346 case ARM::VST4LNdWB_register_Asm_32:
6347 case ARM::VST4LNqWB_register_Asm_16:
6348 case ARM::VST4LNqWB_register_Asm_32: {
6350 // Shuffle the operands around so the lane index operand is in the
6353 TmpInst.setOpcode(getRealVSTOpcode(Inst.getOpcode(), Spacing));
6354 TmpInst.addOperand(Inst.getOperand(2)); // Rn_wb
6355 TmpInst.addOperand(Inst.getOperand(2)); // Rn
6356 TmpInst.addOperand(Inst.getOperand(3)); // alignment
6357 TmpInst.addOperand(Inst.getOperand(4)); // Rm
6358 TmpInst.addOperand(Inst.getOperand(0)); // Vd
6359 TmpInst.addOperand(MCOperand::CreateReg(Inst.getOperand(0).getReg() +
6361 TmpInst.addOperand(MCOperand::CreateReg(Inst.getOperand(0).getReg() +
6363 TmpInst.addOperand(MCOperand::CreateReg(Inst.getOperand(0).getReg() +
6365 TmpInst.addOperand(Inst.getOperand(1)); // lane
6366 TmpInst.addOperand(Inst.getOperand(5)); // CondCode
6367 TmpInst.addOperand(Inst.getOperand(6));
6372 case ARM::VST1LNdWB_fixed_Asm_8:
6373 case ARM::VST1LNdWB_fixed_Asm_16:
6374 case ARM::VST1LNdWB_fixed_Asm_32: {
6376 // Shuffle the operands around so the lane index operand is in the
6379 TmpInst.setOpcode(getRealVSTOpcode(Inst.getOpcode(), Spacing));
6380 TmpInst.addOperand(Inst.getOperand(2)); // Rn_wb
6381 TmpInst.addOperand(Inst.getOperand(2)); // Rn
6382 TmpInst.addOperand(Inst.getOperand(3)); // alignment
6383 TmpInst.addOperand(MCOperand::CreateReg(0)); // Rm
6384 TmpInst.addOperand(Inst.getOperand(0)); // Vd
6385 TmpInst.addOperand(Inst.getOperand(1)); // lane
6386 TmpInst.addOperand(Inst.getOperand(4)); // CondCode
6387 TmpInst.addOperand(Inst.getOperand(5));
6392 case ARM::VST2LNdWB_fixed_Asm_8:
6393 case ARM::VST2LNdWB_fixed_Asm_16:
6394 case ARM::VST2LNdWB_fixed_Asm_32:
6395 case ARM::VST2LNqWB_fixed_Asm_16:
6396 case ARM::VST2LNqWB_fixed_Asm_32: {
6398 // Shuffle the operands around so the lane index operand is in the
6401 TmpInst.setOpcode(getRealVSTOpcode(Inst.getOpcode(), Spacing));
6402 TmpInst.addOperand(Inst.getOperand(2)); // Rn_wb
6403 TmpInst.addOperand(Inst.getOperand(2)); // Rn
6404 TmpInst.addOperand(Inst.getOperand(3)); // alignment
6405 TmpInst.addOperand(MCOperand::CreateReg(0)); // Rm
6406 TmpInst.addOperand(Inst.getOperand(0)); // Vd
6407 TmpInst.addOperand(MCOperand::CreateReg(Inst.getOperand(0).getReg() +
6409 TmpInst.addOperand(Inst.getOperand(1)); // lane
6410 TmpInst.addOperand(Inst.getOperand(4)); // CondCode
6411 TmpInst.addOperand(Inst.getOperand(5));
6416 case ARM::VST3LNdWB_fixed_Asm_8:
6417 case ARM::VST3LNdWB_fixed_Asm_16:
6418 case ARM::VST3LNdWB_fixed_Asm_32:
6419 case ARM::VST3LNqWB_fixed_Asm_16:
6420 case ARM::VST3LNqWB_fixed_Asm_32: {
6422 // Shuffle the operands around so the lane index operand is in the
6425 TmpInst.setOpcode(getRealVSTOpcode(Inst.getOpcode(), Spacing));
6426 TmpInst.addOperand(Inst.getOperand(2)); // Rn_wb
6427 TmpInst.addOperand(Inst.getOperand(2)); // Rn
6428 TmpInst.addOperand(Inst.getOperand(3)); // alignment
6429 TmpInst.addOperand(MCOperand::CreateReg(0)); // Rm
6430 TmpInst.addOperand(Inst.getOperand(0)); // Vd
6431 TmpInst.addOperand(MCOperand::CreateReg(Inst.getOperand(0).getReg() +
6433 TmpInst.addOperand(MCOperand::CreateReg(Inst.getOperand(0).getReg() +
6435 TmpInst.addOperand(Inst.getOperand(1)); // lane
6436 TmpInst.addOperand(Inst.getOperand(4)); // CondCode
6437 TmpInst.addOperand(Inst.getOperand(5));
6442 case ARM::VST4LNdWB_fixed_Asm_8:
6443 case ARM::VST4LNdWB_fixed_Asm_16:
6444 case ARM::VST4LNdWB_fixed_Asm_32:
6445 case ARM::VST4LNqWB_fixed_Asm_16:
6446 case ARM::VST4LNqWB_fixed_Asm_32: {
6448 // Shuffle the operands around so the lane index operand is in the
6451 TmpInst.setOpcode(getRealVSTOpcode(Inst.getOpcode(), Spacing));
6452 TmpInst.addOperand(Inst.getOperand(2)); // Rn_wb
6453 TmpInst.addOperand(Inst.getOperand(2)); // Rn
6454 TmpInst.addOperand(Inst.getOperand(3)); // alignment
6455 TmpInst.addOperand(MCOperand::CreateReg(0)); // Rm
6456 TmpInst.addOperand(Inst.getOperand(0)); // Vd
6457 TmpInst.addOperand(MCOperand::CreateReg(Inst.getOperand(0).getReg() +
6459 TmpInst.addOperand(MCOperand::CreateReg(Inst.getOperand(0).getReg() +
6461 TmpInst.addOperand(MCOperand::CreateReg(Inst.getOperand(0).getReg() +
6463 TmpInst.addOperand(Inst.getOperand(1)); // lane
6464 TmpInst.addOperand(Inst.getOperand(4)); // CondCode
6465 TmpInst.addOperand(Inst.getOperand(5));
6470 case ARM::VST1LNdAsm_8:
6471 case ARM::VST1LNdAsm_16:
6472 case ARM::VST1LNdAsm_32: {
6474 // Shuffle the operands around so the lane index operand is in the
6477 TmpInst.setOpcode(getRealVSTOpcode(Inst.getOpcode(), Spacing));
6478 TmpInst.addOperand(Inst.getOperand(2)); // Rn
6479 TmpInst.addOperand(Inst.getOperand(3)); // alignment
6480 TmpInst.addOperand(Inst.getOperand(0)); // Vd
6481 TmpInst.addOperand(Inst.getOperand(1)); // lane
6482 TmpInst.addOperand(Inst.getOperand(4)); // CondCode
6483 TmpInst.addOperand(Inst.getOperand(5));
6488 case ARM::VST2LNdAsm_8:
6489 case ARM::VST2LNdAsm_16:
6490 case ARM::VST2LNdAsm_32:
6491 case ARM::VST2LNqAsm_16:
6492 case ARM::VST2LNqAsm_32: {
6494 // Shuffle the operands around so the lane index operand is in the
6497 TmpInst.setOpcode(getRealVSTOpcode(Inst.getOpcode(), Spacing));
6498 TmpInst.addOperand(Inst.getOperand(2)); // Rn
6499 TmpInst.addOperand(Inst.getOperand(3)); // alignment
6500 TmpInst.addOperand(Inst.getOperand(0)); // Vd
6501 TmpInst.addOperand(MCOperand::CreateReg(Inst.getOperand(0).getReg() +
6503 TmpInst.addOperand(Inst.getOperand(1)); // lane
6504 TmpInst.addOperand(Inst.getOperand(4)); // CondCode
6505 TmpInst.addOperand(Inst.getOperand(5));
6510 case ARM::VST3LNdAsm_8:
6511 case ARM::VST3LNdAsm_16:
6512 case ARM::VST3LNdAsm_32:
6513 case ARM::VST3LNqAsm_16:
6514 case ARM::VST3LNqAsm_32: {
6516 // Shuffle the operands around so the lane index operand is in the
6519 TmpInst.setOpcode(getRealVSTOpcode(Inst.getOpcode(), Spacing));
6520 TmpInst.addOperand(Inst.getOperand(2)); // Rn
6521 TmpInst.addOperand(Inst.getOperand(3)); // alignment
6522 TmpInst.addOperand(Inst.getOperand(0)); // Vd
6523 TmpInst.addOperand(MCOperand::CreateReg(Inst.getOperand(0).getReg() +
6525 TmpInst.addOperand(MCOperand::CreateReg(Inst.getOperand(0).getReg() +
6527 TmpInst.addOperand(Inst.getOperand(1)); // lane
6528 TmpInst.addOperand(Inst.getOperand(4)); // CondCode
6529 TmpInst.addOperand(Inst.getOperand(5));
6534 case ARM::VST4LNdAsm_8:
6535 case ARM::VST4LNdAsm_16:
6536 case ARM::VST4LNdAsm_32:
6537 case ARM::VST4LNqAsm_16:
6538 case ARM::VST4LNqAsm_32: {
6540 // Shuffle the operands around so the lane index operand is in the
6543 TmpInst.setOpcode(getRealVSTOpcode(Inst.getOpcode(), Spacing));
6544 TmpInst.addOperand(Inst.getOperand(2)); // Rn
6545 TmpInst.addOperand(Inst.getOperand(3)); // alignment
6546 TmpInst.addOperand(Inst.getOperand(0)); // Vd
6547 TmpInst.addOperand(MCOperand::CreateReg(Inst.getOperand(0).getReg() +
6549 TmpInst.addOperand(MCOperand::CreateReg(Inst.getOperand(0).getReg() +
6551 TmpInst.addOperand(MCOperand::CreateReg(Inst.getOperand(0).getReg() +
6553 TmpInst.addOperand(Inst.getOperand(1)); // lane
6554 TmpInst.addOperand(Inst.getOperand(4)); // CondCode
6555 TmpInst.addOperand(Inst.getOperand(5));
6560 // Handle NEON VLD complex aliases.
6561 case ARM::VLD1LNdWB_register_Asm_8:
6562 case ARM::VLD1LNdWB_register_Asm_16:
6563 case ARM::VLD1LNdWB_register_Asm_32: {
6565 // Shuffle the operands around so the lane index operand is in the
6568 TmpInst.setOpcode(getRealVLDOpcode(Inst.getOpcode(), Spacing));
6569 TmpInst.addOperand(Inst.getOperand(0)); // Vd
6570 TmpInst.addOperand(Inst.getOperand(2)); // Rn_wb
6571 TmpInst.addOperand(Inst.getOperand(2)); // Rn
6572 TmpInst.addOperand(Inst.getOperand(3)); // alignment
6573 TmpInst.addOperand(Inst.getOperand(4)); // Rm
6574 TmpInst.addOperand(Inst.getOperand(0)); // Tied operand src (== Vd)
6575 TmpInst.addOperand(Inst.getOperand(1)); // lane
6576 TmpInst.addOperand(Inst.getOperand(5)); // CondCode
6577 TmpInst.addOperand(Inst.getOperand(6));
6582 case ARM::VLD2LNdWB_register_Asm_8:
6583 case ARM::VLD2LNdWB_register_Asm_16:
6584 case ARM::VLD2LNdWB_register_Asm_32:
6585 case ARM::VLD2LNqWB_register_Asm_16:
6586 case ARM::VLD2LNqWB_register_Asm_32: {
6588 // Shuffle the operands around so the lane index operand is in the
6591 TmpInst.setOpcode(getRealVLDOpcode(Inst.getOpcode(), Spacing));
6592 TmpInst.addOperand(Inst.getOperand(0)); // Vd
6593 TmpInst.addOperand(MCOperand::CreateReg(Inst.getOperand(0).getReg() +
6595 TmpInst.addOperand(Inst.getOperand(2)); // Rn_wb
6596 TmpInst.addOperand(Inst.getOperand(2)); // Rn
6597 TmpInst.addOperand(Inst.getOperand(3)); // alignment
6598 TmpInst.addOperand(Inst.getOperand(4)); // Rm
6599 TmpInst.addOperand(Inst.getOperand(0)); // Tied operand src (== Vd)
6600 TmpInst.addOperand(MCOperand::CreateReg(Inst.getOperand(0).getReg() +
6602 TmpInst.addOperand(Inst.getOperand(1)); // lane
6603 TmpInst.addOperand(Inst.getOperand(5)); // CondCode
6604 TmpInst.addOperand(Inst.getOperand(6));
6609 case ARM::VLD3LNdWB_register_Asm_8:
6610 case ARM::VLD3LNdWB_register_Asm_16:
6611 case ARM::VLD3LNdWB_register_Asm_32:
6612 case ARM::VLD3LNqWB_register_Asm_16:
6613 case ARM::VLD3LNqWB_register_Asm_32: {
6615 // Shuffle the operands around so the lane index operand is in the
6618 TmpInst.setOpcode(getRealVLDOpcode(Inst.getOpcode(), Spacing));
6619 TmpInst.addOperand(Inst.getOperand(0)); // Vd
6620 TmpInst.addOperand(MCOperand::CreateReg(Inst.getOperand(0).getReg() +
6622 TmpInst.addOperand(MCOperand::CreateReg(Inst.getOperand(0).getReg() +
6624 TmpInst.addOperand(Inst.getOperand(2)); // Rn_wb
6625 TmpInst.addOperand(Inst.getOperand(2)); // Rn
6626 TmpInst.addOperand(Inst.getOperand(3)); // alignment
6627 TmpInst.addOperand(Inst.getOperand(4)); // Rm
6628 TmpInst.addOperand(Inst.getOperand(0)); // Tied operand src (== Vd)
6629 TmpInst.addOperand(MCOperand::CreateReg(Inst.getOperand(0).getReg() +
6631 TmpInst.addOperand(MCOperand::CreateReg(Inst.getOperand(0).getReg() +
6633 TmpInst.addOperand(Inst.getOperand(1)); // lane
6634 TmpInst.addOperand(Inst.getOperand(5)); // CondCode
6635 TmpInst.addOperand(Inst.getOperand(6));
6640 case ARM::VLD4LNdWB_register_Asm_8:
6641 case ARM::VLD4LNdWB_register_Asm_16:
6642 case ARM::VLD4LNdWB_register_Asm_32:
6643 case ARM::VLD4LNqWB_register_Asm_16:
6644 case ARM::VLD4LNqWB_register_Asm_32: {
6646 // Shuffle the operands around so the lane index operand is in the
6649 TmpInst.setOpcode(getRealVLDOpcode(Inst.getOpcode(), Spacing));
6650 TmpInst.addOperand(Inst.getOperand(0)); // Vd
6651 TmpInst.addOperand(MCOperand::CreateReg(Inst.getOperand(0).getReg() +
6653 TmpInst.addOperand(MCOperand::CreateReg(Inst.getOperand(0).getReg() +
6655 TmpInst.addOperand(MCOperand::CreateReg(Inst.getOperand(0).getReg() +
6657 TmpInst.addOperand(Inst.getOperand(2)); // Rn_wb
6658 TmpInst.addOperand(Inst.getOperand(2)); // Rn
6659 TmpInst.addOperand(Inst.getOperand(3)); // alignment
6660 TmpInst.addOperand(Inst.getOperand(4)); // Rm
6661 TmpInst.addOperand(Inst.getOperand(0)); // Tied operand src (== Vd)
6662 TmpInst.addOperand(MCOperand::CreateReg(Inst.getOperand(0).getReg() +
6664 TmpInst.addOperand(MCOperand::CreateReg(Inst.getOperand(0).getReg() +
6666 TmpInst.addOperand(MCOperand::CreateReg(Inst.getOperand(0).getReg() +
6668 TmpInst.addOperand(Inst.getOperand(1)); // lane
6669 TmpInst.addOperand(Inst.getOperand(5)); // CondCode
6670 TmpInst.addOperand(Inst.getOperand(6));
6675 case ARM::VLD1LNdWB_fixed_Asm_8:
6676 case ARM::VLD1LNdWB_fixed_Asm_16:
6677 case ARM::VLD1LNdWB_fixed_Asm_32: {
6679 // Shuffle the operands around so the lane index operand is in the
6682 TmpInst.setOpcode(getRealVLDOpcode(Inst.getOpcode(), Spacing));
6683 TmpInst.addOperand(Inst.getOperand(0)); // Vd
6684 TmpInst.addOperand(Inst.getOperand(2)); // Rn_wb
6685 TmpInst.addOperand(Inst.getOperand(2)); // Rn
6686 TmpInst.addOperand(Inst.getOperand(3)); // alignment
6687 TmpInst.addOperand(MCOperand::CreateReg(0)); // Rm
6688 TmpInst.addOperand(Inst.getOperand(0)); // Tied operand src (== Vd)
6689 TmpInst.addOperand(Inst.getOperand(1)); // lane
6690 TmpInst.addOperand(Inst.getOperand(4)); // CondCode
6691 TmpInst.addOperand(Inst.getOperand(5));
6696 case ARM::VLD2LNdWB_fixed_Asm_8:
6697 case ARM::VLD2LNdWB_fixed_Asm_16:
6698 case ARM::VLD2LNdWB_fixed_Asm_32:
6699 case ARM::VLD2LNqWB_fixed_Asm_16:
6700 case ARM::VLD2LNqWB_fixed_Asm_32: {
6702 // Shuffle the operands around so the lane index operand is in the
6705 TmpInst.setOpcode(getRealVLDOpcode(Inst.getOpcode(), Spacing));
6706 TmpInst.addOperand(Inst.getOperand(0)); // Vd
6707 TmpInst.addOperand(MCOperand::CreateReg(Inst.getOperand(0).getReg() +
6709 TmpInst.addOperand(Inst.getOperand(2)); // Rn_wb
6710 TmpInst.addOperand(Inst.getOperand(2)); // Rn
6711 TmpInst.addOperand(Inst.getOperand(3)); // alignment
6712 TmpInst.addOperand(MCOperand::CreateReg(0)); // Rm
6713 TmpInst.addOperand(Inst.getOperand(0)); // Tied operand src (== Vd)
6714 TmpInst.addOperand(MCOperand::CreateReg(Inst.getOperand(0).getReg() +
6716 TmpInst.addOperand(Inst.getOperand(1)); // lane
6717 TmpInst.addOperand(Inst.getOperand(4)); // CondCode
6718 TmpInst.addOperand(Inst.getOperand(5));
6723 case ARM::VLD3LNdWB_fixed_Asm_8:
6724 case ARM::VLD3LNdWB_fixed_Asm_16:
6725 case ARM::VLD3LNdWB_fixed_Asm_32:
6726 case ARM::VLD3LNqWB_fixed_Asm_16:
6727 case ARM::VLD3LNqWB_fixed_Asm_32: {
6729 // Shuffle the operands around so the lane index operand is in the
6732 TmpInst.setOpcode(getRealVLDOpcode(Inst.getOpcode(), Spacing));
6733 TmpInst.addOperand(Inst.getOperand(0)); // Vd
6734 TmpInst.addOperand(MCOperand::CreateReg(Inst.getOperand(0).getReg() +
6736 TmpInst.addOperand(MCOperand::CreateReg(Inst.getOperand(0).getReg() +
6738 TmpInst.addOperand(Inst.getOperand(2)); // Rn_wb
6739 TmpInst.addOperand(Inst.getOperand(2)); // Rn
6740 TmpInst.addOperand(Inst.getOperand(3)); // alignment
6741 TmpInst.addOperand(MCOperand::CreateReg(0)); // Rm
6742 TmpInst.addOperand(Inst.getOperand(0)); // Tied operand src (== Vd)
6743 TmpInst.addOperand(MCOperand::CreateReg(Inst.getOperand(0).getReg() +
6745 TmpInst.addOperand(MCOperand::CreateReg(Inst.getOperand(0).getReg() +
6747 TmpInst.addOperand(Inst.getOperand(1)); // lane
6748 TmpInst.addOperand(Inst.getOperand(4)); // CondCode
6749 TmpInst.addOperand(Inst.getOperand(5));
6754 case ARM::VLD4LNdWB_fixed_Asm_8:
6755 case ARM::VLD4LNdWB_fixed_Asm_16:
6756 case ARM::VLD4LNdWB_fixed_Asm_32:
6757 case ARM::VLD4LNqWB_fixed_Asm_16:
6758 case ARM::VLD4LNqWB_fixed_Asm_32: {
6760 // Shuffle the operands around so the lane index operand is in the
6763 TmpInst.setOpcode(getRealVLDOpcode(Inst.getOpcode(), Spacing));
6764 TmpInst.addOperand(Inst.getOperand(0)); // Vd
6765 TmpInst.addOperand(MCOperand::CreateReg(Inst.getOperand(0).getReg() +
6767 TmpInst.addOperand(MCOperand::CreateReg(Inst.getOperand(0).getReg() +
6769 TmpInst.addOperand(MCOperand::CreateReg(Inst.getOperand(0).getReg() +
6771 TmpInst.addOperand(Inst.getOperand(2)); // Rn_wb
6772 TmpInst.addOperand(Inst.getOperand(2)); // Rn
6773 TmpInst.addOperand(Inst.getOperand(3)); // alignment
6774 TmpInst.addOperand(MCOperand::CreateReg(0)); // Rm
6775 TmpInst.addOperand(Inst.getOperand(0)); // Tied operand src (== Vd)
6776 TmpInst.addOperand(MCOperand::CreateReg(Inst.getOperand(0).getReg() +
6778 TmpInst.addOperand(MCOperand::CreateReg(Inst.getOperand(0).getReg() +
6780 TmpInst.addOperand(MCOperand::CreateReg(Inst.getOperand(0).getReg() +
6782 TmpInst.addOperand(Inst.getOperand(1)); // lane
6783 TmpInst.addOperand(Inst.getOperand(4)); // CondCode
6784 TmpInst.addOperand(Inst.getOperand(5));
6789 case ARM::VLD1LNdAsm_8:
6790 case ARM::VLD1LNdAsm_16:
6791 case ARM::VLD1LNdAsm_32: {
6793 // Shuffle the operands around so the lane index operand is in the
6796 TmpInst.setOpcode(getRealVLDOpcode(Inst.getOpcode(), Spacing));
6797 TmpInst.addOperand(Inst.getOperand(0)); // Vd
6798 TmpInst.addOperand(Inst.getOperand(2)); // Rn
6799 TmpInst.addOperand(Inst.getOperand(3)); // alignment
6800 TmpInst.addOperand(Inst.getOperand(0)); // Tied operand src (== Vd)
6801 TmpInst.addOperand(Inst.getOperand(1)); // lane
6802 TmpInst.addOperand(Inst.getOperand(4)); // CondCode
6803 TmpInst.addOperand(Inst.getOperand(5));
6808 case ARM::VLD2LNdAsm_8:
6809 case ARM::VLD2LNdAsm_16:
6810 case ARM::VLD2LNdAsm_32:
6811 case ARM::VLD2LNqAsm_16:
6812 case ARM::VLD2LNqAsm_32: {
6814 // Shuffle the operands around so the lane index operand is in the
6817 TmpInst.setOpcode(getRealVLDOpcode(Inst.getOpcode(), Spacing));
6818 TmpInst.addOperand(Inst.getOperand(0)); // Vd
6819 TmpInst.addOperand(MCOperand::CreateReg(Inst.getOperand(0).getReg() +
6821 TmpInst.addOperand(Inst.getOperand(2)); // Rn
6822 TmpInst.addOperand(Inst.getOperand(3)); // alignment
6823 TmpInst.addOperand(Inst.getOperand(0)); // Tied operand src (== Vd)
6824 TmpInst.addOperand(MCOperand::CreateReg(Inst.getOperand(0).getReg() +
6826 TmpInst.addOperand(Inst.getOperand(1)); // lane
6827 TmpInst.addOperand(Inst.getOperand(4)); // CondCode
6828 TmpInst.addOperand(Inst.getOperand(5));
6833 case ARM::VLD3LNdAsm_8:
6834 case ARM::VLD3LNdAsm_16:
6835 case ARM::VLD3LNdAsm_32:
6836 case ARM::VLD3LNqAsm_16:
6837 case ARM::VLD3LNqAsm_32: {
6839 // Shuffle the operands around so the lane index operand is in the
6842 TmpInst.setOpcode(getRealVLDOpcode(Inst.getOpcode(), Spacing));
6843 TmpInst.addOperand(Inst.getOperand(0)); // Vd
6844 TmpInst.addOperand(MCOperand::CreateReg(Inst.getOperand(0).getReg() +
6846 TmpInst.addOperand(MCOperand::CreateReg(Inst.getOperand(0).getReg() +
6848 TmpInst.addOperand(Inst.getOperand(2)); // Rn
6849 TmpInst.addOperand(Inst.getOperand(3)); // alignment
6850 TmpInst.addOperand(Inst.getOperand(0)); // Tied operand src (== Vd)
6851 TmpInst.addOperand(MCOperand::CreateReg(Inst.getOperand(0).getReg() +
6853 TmpInst.addOperand(MCOperand::CreateReg(Inst.getOperand(0).getReg() +
6855 TmpInst.addOperand(Inst.getOperand(1)); // lane
6856 TmpInst.addOperand(Inst.getOperand(4)); // CondCode
6857 TmpInst.addOperand(Inst.getOperand(5));
6862 case ARM::VLD4LNdAsm_8:
6863 case ARM::VLD4LNdAsm_16:
6864 case ARM::VLD4LNdAsm_32:
6865 case ARM::VLD4LNqAsm_16:
6866 case ARM::VLD4LNqAsm_32: {
6868 // Shuffle the operands around so the lane index operand is in the
6871 TmpInst.setOpcode(getRealVLDOpcode(Inst.getOpcode(), Spacing));
6872 TmpInst.addOperand(Inst.getOperand(0)); // Vd
6873 TmpInst.addOperand(MCOperand::CreateReg(Inst.getOperand(0).getReg() +
6875 TmpInst.addOperand(MCOperand::CreateReg(Inst.getOperand(0).getReg() +
6877 TmpInst.addOperand(MCOperand::CreateReg(Inst.getOperand(0).getReg() +
6879 TmpInst.addOperand(Inst.getOperand(2)); // Rn
6880 TmpInst.addOperand(Inst.getOperand(3)); // alignment
6881 TmpInst.addOperand(Inst.getOperand(0)); // Tied operand src (== Vd)
6882 TmpInst.addOperand(MCOperand::CreateReg(Inst.getOperand(0).getReg() +
6884 TmpInst.addOperand(MCOperand::CreateReg(Inst.getOperand(0).getReg() +
6886 TmpInst.addOperand(MCOperand::CreateReg(Inst.getOperand(0).getReg() +
6888 TmpInst.addOperand(Inst.getOperand(1)); // lane
6889 TmpInst.addOperand(Inst.getOperand(4)); // CondCode
6890 TmpInst.addOperand(Inst.getOperand(5));
6895 // VLD3DUP single 3-element structure to all lanes instructions.
6896 case ARM::VLD3DUPdAsm_8:
6897 case ARM::VLD3DUPdAsm_16:
6898 case ARM::VLD3DUPdAsm_32:
6899 case ARM::VLD3DUPqAsm_8:
6900 case ARM::VLD3DUPqAsm_16:
6901 case ARM::VLD3DUPqAsm_32: {
6904 TmpInst.setOpcode(getRealVLDOpcode(Inst.getOpcode(), Spacing));
6905 TmpInst.addOperand(Inst.getOperand(0)); // Vd
6906 TmpInst.addOperand(MCOperand::CreateReg(Inst.getOperand(0).getReg() +
6908 TmpInst.addOperand(MCOperand::CreateReg(Inst.getOperand(0).getReg() +
6910 TmpInst.addOperand(Inst.getOperand(1)); // Rn
6911 TmpInst.addOperand(Inst.getOperand(2)); // alignment
6912 TmpInst.addOperand(Inst.getOperand(3)); // CondCode
6913 TmpInst.addOperand(Inst.getOperand(4));
6918 case ARM::VLD3DUPdWB_fixed_Asm_8:
6919 case ARM::VLD3DUPdWB_fixed_Asm_16:
6920 case ARM::VLD3DUPdWB_fixed_Asm_32:
6921 case ARM::VLD3DUPqWB_fixed_Asm_8:
6922 case ARM::VLD3DUPqWB_fixed_Asm_16:
6923 case ARM::VLD3DUPqWB_fixed_Asm_32: {
6926 TmpInst.setOpcode(getRealVLDOpcode(Inst.getOpcode(), Spacing));
6927 TmpInst.addOperand(Inst.getOperand(0)); // Vd
6928 TmpInst.addOperand(MCOperand::CreateReg(Inst.getOperand(0).getReg() +
6930 TmpInst.addOperand(MCOperand::CreateReg(Inst.getOperand(0).getReg() +
6932 TmpInst.addOperand(Inst.getOperand(1)); // Rn
6933 TmpInst.addOperand(Inst.getOperand(1)); // Rn_wb == tied Rn
6934 TmpInst.addOperand(Inst.getOperand(2)); // alignment
6935 TmpInst.addOperand(MCOperand::CreateReg(0)); // Rm
6936 TmpInst.addOperand(Inst.getOperand(3)); // CondCode
6937 TmpInst.addOperand(Inst.getOperand(4));
6942 case ARM::VLD3DUPdWB_register_Asm_8:
6943 case ARM::VLD3DUPdWB_register_Asm_16:
6944 case ARM::VLD3DUPdWB_register_Asm_32:
6945 case ARM::VLD3DUPqWB_register_Asm_8:
6946 case ARM::VLD3DUPqWB_register_Asm_16:
6947 case ARM::VLD3DUPqWB_register_Asm_32: {
6950 TmpInst.setOpcode(getRealVLDOpcode(Inst.getOpcode(), Spacing));
6951 TmpInst.addOperand(Inst.getOperand(0)); // Vd
6952 TmpInst.addOperand(MCOperand::CreateReg(Inst.getOperand(0).getReg() +
6954 TmpInst.addOperand(MCOperand::CreateReg(Inst.getOperand(0).getReg() +
6956 TmpInst.addOperand(Inst.getOperand(1)); // Rn
6957 TmpInst.addOperand(Inst.getOperand(1)); // Rn_wb == tied Rn
6958 TmpInst.addOperand(Inst.getOperand(2)); // alignment
6959 TmpInst.addOperand(Inst.getOperand(3)); // Rm
6960 TmpInst.addOperand(Inst.getOperand(4)); // CondCode
6961 TmpInst.addOperand(Inst.getOperand(5));
6966 // VLD3 multiple 3-element structure instructions.
6967 case ARM::VLD3dAsm_8:
6968 case ARM::VLD3dAsm_16:
6969 case ARM::VLD3dAsm_32:
6970 case ARM::VLD3qAsm_8:
6971 case ARM::VLD3qAsm_16:
6972 case ARM::VLD3qAsm_32: {
6975 TmpInst.setOpcode(getRealVLDOpcode(Inst.getOpcode(), Spacing));
6976 TmpInst.addOperand(Inst.getOperand(0)); // Vd
6977 TmpInst.addOperand(MCOperand::CreateReg(Inst.getOperand(0).getReg() +
6979 TmpInst.addOperand(MCOperand::CreateReg(Inst.getOperand(0).getReg() +
6981 TmpInst.addOperand(Inst.getOperand(1)); // Rn
6982 TmpInst.addOperand(Inst.getOperand(2)); // alignment
6983 TmpInst.addOperand(Inst.getOperand(3)); // CondCode
6984 TmpInst.addOperand(Inst.getOperand(4));
6989 case ARM::VLD3dWB_fixed_Asm_8:
6990 case ARM::VLD3dWB_fixed_Asm_16:
6991 case ARM::VLD3dWB_fixed_Asm_32:
6992 case ARM::VLD3qWB_fixed_Asm_8:
6993 case ARM::VLD3qWB_fixed_Asm_16:
6994 case ARM::VLD3qWB_fixed_Asm_32: {
6997 TmpInst.setOpcode(getRealVLDOpcode(Inst.getOpcode(), Spacing));
6998 TmpInst.addOperand(Inst.getOperand(0)); // Vd
6999 TmpInst.addOperand(MCOperand::CreateReg(Inst.getOperand(0).getReg() +
7001 TmpInst.addOperand(MCOperand::CreateReg(Inst.getOperand(0).getReg() +
7003 TmpInst.addOperand(Inst.getOperand(1)); // Rn
7004 TmpInst.addOperand(Inst.getOperand(1)); // Rn_wb == tied Rn
7005 TmpInst.addOperand(Inst.getOperand(2)); // alignment
7006 TmpInst.addOperand(MCOperand::CreateReg(0)); // Rm
7007 TmpInst.addOperand(Inst.getOperand(3)); // CondCode
7008 TmpInst.addOperand(Inst.getOperand(4));
7013 case ARM::VLD3dWB_register_Asm_8:
7014 case ARM::VLD3dWB_register_Asm_16:
7015 case ARM::VLD3dWB_register_Asm_32:
7016 case ARM::VLD3qWB_register_Asm_8:
7017 case ARM::VLD3qWB_register_Asm_16:
7018 case ARM::VLD3qWB_register_Asm_32: {
7021 TmpInst.setOpcode(getRealVLDOpcode(Inst.getOpcode(), Spacing));
7022 TmpInst.addOperand(Inst.getOperand(0)); // Vd
7023 TmpInst.addOperand(MCOperand::CreateReg(Inst.getOperand(0).getReg() +
7025 TmpInst.addOperand(MCOperand::CreateReg(Inst.getOperand(0).getReg() +
7027 TmpInst.addOperand(Inst.getOperand(1)); // Rn
7028 TmpInst.addOperand(Inst.getOperand(1)); // Rn_wb == tied Rn
7029 TmpInst.addOperand(Inst.getOperand(2)); // alignment
7030 TmpInst.addOperand(Inst.getOperand(3)); // Rm
7031 TmpInst.addOperand(Inst.getOperand(4)); // CondCode
7032 TmpInst.addOperand(Inst.getOperand(5));
7037 // VLD4DUP single 3-element structure to all lanes instructions.
7038 case ARM::VLD4DUPdAsm_8:
7039 case ARM::VLD4DUPdAsm_16:
7040 case ARM::VLD4DUPdAsm_32:
7041 case ARM::VLD4DUPqAsm_8:
7042 case ARM::VLD4DUPqAsm_16:
7043 case ARM::VLD4DUPqAsm_32: {
7046 TmpInst.setOpcode(getRealVLDOpcode(Inst.getOpcode(), Spacing));
7047 TmpInst.addOperand(Inst.getOperand(0)); // Vd
7048 TmpInst.addOperand(MCOperand::CreateReg(Inst.getOperand(0).getReg() +
7050 TmpInst.addOperand(MCOperand::CreateReg(Inst.getOperand(0).getReg() +
7052 TmpInst.addOperand(MCOperand::CreateReg(Inst.getOperand(0).getReg() +
7054 TmpInst.addOperand(Inst.getOperand(1)); // Rn
7055 TmpInst.addOperand(Inst.getOperand(2)); // alignment
7056 TmpInst.addOperand(Inst.getOperand(3)); // CondCode
7057 TmpInst.addOperand(Inst.getOperand(4));
7062 case ARM::VLD4DUPdWB_fixed_Asm_8:
7063 case ARM::VLD4DUPdWB_fixed_Asm_16:
7064 case ARM::VLD4DUPdWB_fixed_Asm_32:
7065 case ARM::VLD4DUPqWB_fixed_Asm_8:
7066 case ARM::VLD4DUPqWB_fixed_Asm_16:
7067 case ARM::VLD4DUPqWB_fixed_Asm_32: {
7070 TmpInst.setOpcode(getRealVLDOpcode(Inst.getOpcode(), Spacing));
7071 TmpInst.addOperand(Inst.getOperand(0)); // Vd
7072 TmpInst.addOperand(MCOperand::CreateReg(Inst.getOperand(0).getReg() +
7074 TmpInst.addOperand(MCOperand::CreateReg(Inst.getOperand(0).getReg() +
7076 TmpInst.addOperand(MCOperand::CreateReg(Inst.getOperand(0).getReg() +
7078 TmpInst.addOperand(Inst.getOperand(1)); // Rn
7079 TmpInst.addOperand(Inst.getOperand(1)); // Rn_wb == tied Rn
7080 TmpInst.addOperand(Inst.getOperand(2)); // alignment
7081 TmpInst.addOperand(MCOperand::CreateReg(0)); // Rm
7082 TmpInst.addOperand(Inst.getOperand(3)); // CondCode
7083 TmpInst.addOperand(Inst.getOperand(4));
7088 case ARM::VLD4DUPdWB_register_Asm_8:
7089 case ARM::VLD4DUPdWB_register_Asm_16:
7090 case ARM::VLD4DUPdWB_register_Asm_32:
7091 case ARM::VLD4DUPqWB_register_Asm_8:
7092 case ARM::VLD4DUPqWB_register_Asm_16:
7093 case ARM::VLD4DUPqWB_register_Asm_32: {
7096 TmpInst.setOpcode(getRealVLDOpcode(Inst.getOpcode(), Spacing));
7097 TmpInst.addOperand(Inst.getOperand(0)); // Vd
7098 TmpInst.addOperand(MCOperand::CreateReg(Inst.getOperand(0).getReg() +
7100 TmpInst.addOperand(MCOperand::CreateReg(Inst.getOperand(0).getReg() +
7102 TmpInst.addOperand(MCOperand::CreateReg(Inst.getOperand(0).getReg() +
7104 TmpInst.addOperand(Inst.getOperand(1)); // Rn
7105 TmpInst.addOperand(Inst.getOperand(1)); // Rn_wb == tied Rn
7106 TmpInst.addOperand(Inst.getOperand(2)); // alignment
7107 TmpInst.addOperand(Inst.getOperand(3)); // Rm
7108 TmpInst.addOperand(Inst.getOperand(4)); // CondCode
7109 TmpInst.addOperand(Inst.getOperand(5));
7114 // VLD4 multiple 4-element structure instructions.
7115 case ARM::VLD4dAsm_8:
7116 case ARM::VLD4dAsm_16:
7117 case ARM::VLD4dAsm_32:
7118 case ARM::VLD4qAsm_8:
7119 case ARM::VLD4qAsm_16:
7120 case ARM::VLD4qAsm_32: {
7123 TmpInst.setOpcode(getRealVLDOpcode(Inst.getOpcode(), Spacing));
7124 TmpInst.addOperand(Inst.getOperand(0)); // Vd
7125 TmpInst.addOperand(MCOperand::CreateReg(Inst.getOperand(0).getReg() +
7127 TmpInst.addOperand(MCOperand::CreateReg(Inst.getOperand(0).getReg() +
7129 TmpInst.addOperand(MCOperand::CreateReg(Inst.getOperand(0).getReg() +
7131 TmpInst.addOperand(Inst.getOperand(1)); // Rn
7132 TmpInst.addOperand(Inst.getOperand(2)); // alignment
7133 TmpInst.addOperand(Inst.getOperand(3)); // CondCode
7134 TmpInst.addOperand(Inst.getOperand(4));
7139 case ARM::VLD4dWB_fixed_Asm_8:
7140 case ARM::VLD4dWB_fixed_Asm_16:
7141 case ARM::VLD4dWB_fixed_Asm_32:
7142 case ARM::VLD4qWB_fixed_Asm_8:
7143 case ARM::VLD4qWB_fixed_Asm_16:
7144 case ARM::VLD4qWB_fixed_Asm_32: {
7147 TmpInst.setOpcode(getRealVLDOpcode(Inst.getOpcode(), Spacing));
7148 TmpInst.addOperand(Inst.getOperand(0)); // Vd
7149 TmpInst.addOperand(MCOperand::CreateReg(Inst.getOperand(0).getReg() +
7151 TmpInst.addOperand(MCOperand::CreateReg(Inst.getOperand(0).getReg() +
7153 TmpInst.addOperand(MCOperand::CreateReg(Inst.getOperand(0).getReg() +
7155 TmpInst.addOperand(Inst.getOperand(1)); // Rn
7156 TmpInst.addOperand(Inst.getOperand(1)); // Rn_wb == tied Rn
7157 TmpInst.addOperand(Inst.getOperand(2)); // alignment
7158 TmpInst.addOperand(MCOperand::CreateReg(0)); // Rm
7159 TmpInst.addOperand(Inst.getOperand(3)); // CondCode
7160 TmpInst.addOperand(Inst.getOperand(4));
7165 case ARM::VLD4dWB_register_Asm_8:
7166 case ARM::VLD4dWB_register_Asm_16:
7167 case ARM::VLD4dWB_register_Asm_32:
7168 case ARM::VLD4qWB_register_Asm_8:
7169 case ARM::VLD4qWB_register_Asm_16:
7170 case ARM::VLD4qWB_register_Asm_32: {
7173 TmpInst.setOpcode(getRealVLDOpcode(Inst.getOpcode(), Spacing));
7174 TmpInst.addOperand(Inst.getOperand(0)); // Vd
7175 TmpInst.addOperand(MCOperand::CreateReg(Inst.getOperand(0).getReg() +
7177 TmpInst.addOperand(MCOperand::CreateReg(Inst.getOperand(0).getReg() +
7179 TmpInst.addOperand(MCOperand::CreateReg(Inst.getOperand(0).getReg() +
7181 TmpInst.addOperand(Inst.getOperand(1)); // Rn
7182 TmpInst.addOperand(Inst.getOperand(1)); // Rn_wb == tied Rn
7183 TmpInst.addOperand(Inst.getOperand(2)); // alignment
7184 TmpInst.addOperand(Inst.getOperand(3)); // Rm
7185 TmpInst.addOperand(Inst.getOperand(4)); // CondCode
7186 TmpInst.addOperand(Inst.getOperand(5));
7191 // VST3 multiple 3-element structure instructions.
7192 case ARM::VST3dAsm_8:
7193 case ARM::VST3dAsm_16:
7194 case ARM::VST3dAsm_32:
7195 case ARM::VST3qAsm_8:
7196 case ARM::VST3qAsm_16:
7197 case ARM::VST3qAsm_32: {
7200 TmpInst.setOpcode(getRealVSTOpcode(Inst.getOpcode(), Spacing));
7201 TmpInst.addOperand(Inst.getOperand(1)); // Rn
7202 TmpInst.addOperand(Inst.getOperand(2)); // alignment
7203 TmpInst.addOperand(Inst.getOperand(0)); // Vd
7204 TmpInst.addOperand(MCOperand::CreateReg(Inst.getOperand(0).getReg() +
7206 TmpInst.addOperand(MCOperand::CreateReg(Inst.getOperand(0).getReg() +
7208 TmpInst.addOperand(Inst.getOperand(3)); // CondCode
7209 TmpInst.addOperand(Inst.getOperand(4));
7214 case ARM::VST3dWB_fixed_Asm_8:
7215 case ARM::VST3dWB_fixed_Asm_16:
7216 case ARM::VST3dWB_fixed_Asm_32:
7217 case ARM::VST3qWB_fixed_Asm_8:
7218 case ARM::VST3qWB_fixed_Asm_16:
7219 case ARM::VST3qWB_fixed_Asm_32: {
7222 TmpInst.setOpcode(getRealVSTOpcode(Inst.getOpcode(), Spacing));
7223 TmpInst.addOperand(Inst.getOperand(1)); // Rn
7224 TmpInst.addOperand(Inst.getOperand(1)); // Rn_wb == tied Rn
7225 TmpInst.addOperand(Inst.getOperand(2)); // alignment
7226 TmpInst.addOperand(MCOperand::CreateReg(0)); // Rm
7227 TmpInst.addOperand(Inst.getOperand(0)); // Vd
7228 TmpInst.addOperand(MCOperand::CreateReg(Inst.getOperand(0).getReg() +
7230 TmpInst.addOperand(MCOperand::CreateReg(Inst.getOperand(0).getReg() +
7232 TmpInst.addOperand(Inst.getOperand(3)); // CondCode
7233 TmpInst.addOperand(Inst.getOperand(4));
7238 case ARM::VST3dWB_register_Asm_8:
7239 case ARM::VST3dWB_register_Asm_16:
7240 case ARM::VST3dWB_register_Asm_32:
7241 case ARM::VST3qWB_register_Asm_8:
7242 case ARM::VST3qWB_register_Asm_16:
7243 case ARM::VST3qWB_register_Asm_32: {
7246 TmpInst.setOpcode(getRealVSTOpcode(Inst.getOpcode(), Spacing));
7247 TmpInst.addOperand(Inst.getOperand(1)); // Rn
7248 TmpInst.addOperand(Inst.getOperand(1)); // Rn_wb == tied Rn
7249 TmpInst.addOperand(Inst.getOperand(2)); // alignment
7250 TmpInst.addOperand(Inst.getOperand(3)); // Rm
7251 TmpInst.addOperand(Inst.getOperand(0)); // Vd
7252 TmpInst.addOperand(MCOperand::CreateReg(Inst.getOperand(0).getReg() +
7254 TmpInst.addOperand(MCOperand::CreateReg(Inst.getOperand(0).getReg() +
7256 TmpInst.addOperand(Inst.getOperand(4)); // CondCode
7257 TmpInst.addOperand(Inst.getOperand(5));
7262 // VST4 multiple 3-element structure instructions.
7263 case ARM::VST4dAsm_8:
7264 case ARM::VST4dAsm_16:
7265 case ARM::VST4dAsm_32:
7266 case ARM::VST4qAsm_8:
7267 case ARM::VST4qAsm_16:
7268 case ARM::VST4qAsm_32: {
7271 TmpInst.setOpcode(getRealVSTOpcode(Inst.getOpcode(), Spacing));
7272 TmpInst.addOperand(Inst.getOperand(1)); // Rn
7273 TmpInst.addOperand(Inst.getOperand(2)); // alignment
7274 TmpInst.addOperand(Inst.getOperand(0)); // Vd
7275 TmpInst.addOperand(MCOperand::CreateReg(Inst.getOperand(0).getReg() +
7277 TmpInst.addOperand(MCOperand::CreateReg(Inst.getOperand(0).getReg() +
7279 TmpInst.addOperand(MCOperand::CreateReg(Inst.getOperand(0).getReg() +
7281 TmpInst.addOperand(Inst.getOperand(3)); // CondCode
7282 TmpInst.addOperand(Inst.getOperand(4));
7287 case ARM::VST4dWB_fixed_Asm_8:
7288 case ARM::VST4dWB_fixed_Asm_16:
7289 case ARM::VST4dWB_fixed_Asm_32:
7290 case ARM::VST4qWB_fixed_Asm_8:
7291 case ARM::VST4qWB_fixed_Asm_16:
7292 case ARM::VST4qWB_fixed_Asm_32: {
7295 TmpInst.setOpcode(getRealVSTOpcode(Inst.getOpcode(), Spacing));
7296 TmpInst.addOperand(Inst.getOperand(1)); // Rn
7297 TmpInst.addOperand(Inst.getOperand(1)); // Rn_wb == tied Rn
7298 TmpInst.addOperand(Inst.getOperand(2)); // alignment
7299 TmpInst.addOperand(MCOperand::CreateReg(0)); // Rm
7300 TmpInst.addOperand(Inst.getOperand(0)); // Vd
7301 TmpInst.addOperand(MCOperand::CreateReg(Inst.getOperand(0).getReg() +
7303 TmpInst.addOperand(MCOperand::CreateReg(Inst.getOperand(0).getReg() +
7305 TmpInst.addOperand(MCOperand::CreateReg(Inst.getOperand(0).getReg() +
7307 TmpInst.addOperand(Inst.getOperand(3)); // CondCode
7308 TmpInst.addOperand(Inst.getOperand(4));
7313 case ARM::VST4dWB_register_Asm_8:
7314 case ARM::VST4dWB_register_Asm_16:
7315 case ARM::VST4dWB_register_Asm_32:
7316 case ARM::VST4qWB_register_Asm_8:
7317 case ARM::VST4qWB_register_Asm_16:
7318 case ARM::VST4qWB_register_Asm_32: {
7321 TmpInst.setOpcode(getRealVSTOpcode(Inst.getOpcode(), Spacing));
7322 TmpInst.addOperand(Inst.getOperand(1)); // Rn
7323 TmpInst.addOperand(Inst.getOperand(1)); // Rn_wb == tied Rn
7324 TmpInst.addOperand(Inst.getOperand(2)); // alignment
7325 TmpInst.addOperand(Inst.getOperand(3)); // Rm
7326 TmpInst.addOperand(Inst.getOperand(0)); // Vd
7327 TmpInst.addOperand(MCOperand::CreateReg(Inst.getOperand(0).getReg() +
7329 TmpInst.addOperand(MCOperand::CreateReg(Inst.getOperand(0).getReg() +
7331 TmpInst.addOperand(MCOperand::CreateReg(Inst.getOperand(0).getReg() +
7333 TmpInst.addOperand(Inst.getOperand(4)); // CondCode
7334 TmpInst.addOperand(Inst.getOperand(5));
7339 // Handle encoding choice for the shift-immediate instructions.
7342 case ARM::t2ASRri: {
7343 if (isARMLowRegister(Inst.getOperand(0).getReg()) &&
7344 Inst.getOperand(0).getReg() == Inst.getOperand(1).getReg() &&
7345 Inst.getOperand(5).getReg() == (inITBlock() ? 0 : ARM::CPSR) &&
7346 !(static_cast<ARMOperand &>(*Operands[3]).isToken() &&
7347 static_cast<ARMOperand &>(*Operands[3]).getToken() == ".w")) {
7349 switch (Inst.getOpcode()) {
7350 default: llvm_unreachable("unexpected opcode");
7351 case ARM::t2LSLri: NewOpc = ARM::tLSLri; break;
7352 case ARM::t2LSRri: NewOpc = ARM::tLSRri; break;
7353 case ARM::t2ASRri: NewOpc = ARM::tASRri; break;
7355 // The Thumb1 operands aren't in the same order. Awesome, eh?
7357 TmpInst.setOpcode(NewOpc);
7358 TmpInst.addOperand(Inst.getOperand(0));
7359 TmpInst.addOperand(Inst.getOperand(5));
7360 TmpInst.addOperand(Inst.getOperand(1));
7361 TmpInst.addOperand(Inst.getOperand(2));
7362 TmpInst.addOperand(Inst.getOperand(3));
7363 TmpInst.addOperand(Inst.getOperand(4));
7370 // Handle the Thumb2 mode MOV complex aliases.
7372 case ARM::t2MOVSsr: {
7373 // Which instruction to expand to depends on the CCOut operand and
7374 // whether we're in an IT block if the register operands are low
7376 bool isNarrow = false;
7377 if (isARMLowRegister(Inst.getOperand(0).getReg()) &&
7378 isARMLowRegister(Inst.getOperand(1).getReg()) &&
7379 isARMLowRegister(Inst.getOperand(2).getReg()) &&
7380 Inst.getOperand(0).getReg() == Inst.getOperand(1).getReg() &&
7381 inITBlock() == (Inst.getOpcode() == ARM::t2MOVsr))
7385 switch(ARM_AM::getSORegShOp(Inst.getOperand(3).getImm())) {
7386 default: llvm_unreachable("unexpected opcode!");
7387 case ARM_AM::asr: newOpc = isNarrow ? ARM::tASRrr : ARM::t2ASRrr; break;
7388 case ARM_AM::lsr: newOpc = isNarrow ? ARM::tLSRrr : ARM::t2LSRrr; break;
7389 case ARM_AM::lsl: newOpc = isNarrow ? ARM::tLSLrr : ARM::t2LSLrr; break;
7390 case ARM_AM::ror: newOpc = isNarrow ? ARM::tROR : ARM::t2RORrr; break;
7392 TmpInst.setOpcode(newOpc);
7393 TmpInst.addOperand(Inst.getOperand(0)); // Rd
7395 TmpInst.addOperand(MCOperand::CreateReg(
7396 Inst.getOpcode() == ARM::t2MOVSsr ? ARM::CPSR : 0));
7397 TmpInst.addOperand(Inst.getOperand(1)); // Rn
7398 TmpInst.addOperand(Inst.getOperand(2)); // Rm
7399 TmpInst.addOperand(Inst.getOperand(4)); // CondCode
7400 TmpInst.addOperand(Inst.getOperand(5));
7402 TmpInst.addOperand(MCOperand::CreateReg(
7403 Inst.getOpcode() == ARM::t2MOVSsr ? ARM::CPSR : 0));
7408 case ARM::t2MOVSsi: {
7409 // Which instruction to expand to depends on the CCOut operand and
7410 // whether we're in an IT block if the register operands are low
7412 bool isNarrow = false;
7413 if (isARMLowRegister(Inst.getOperand(0).getReg()) &&
7414 isARMLowRegister(Inst.getOperand(1).getReg()) &&
7415 inITBlock() == (Inst.getOpcode() == ARM::t2MOVsi))
7419 switch(ARM_AM::getSORegShOp(Inst.getOperand(2).getImm())) {
7420 default: llvm_unreachable("unexpected opcode!");
7421 case ARM_AM::asr: newOpc = isNarrow ? ARM::tASRri : ARM::t2ASRri; break;
7422 case ARM_AM::lsr: newOpc = isNarrow ? ARM::tLSRri : ARM::t2LSRri; break;
7423 case ARM_AM::lsl: newOpc = isNarrow ? ARM::tLSLri : ARM::t2LSLri; break;
7424 case ARM_AM::ror: newOpc = ARM::t2RORri; isNarrow = false; break;
7425 case ARM_AM::rrx: isNarrow = false; newOpc = ARM::t2RRX; break;
7427 unsigned Amount = ARM_AM::getSORegOffset(Inst.getOperand(2).getImm());
7428 if (Amount == 32) Amount = 0;
7429 TmpInst.setOpcode(newOpc);
7430 TmpInst.addOperand(Inst.getOperand(0)); // Rd
7432 TmpInst.addOperand(MCOperand::CreateReg(
7433 Inst.getOpcode() == ARM::t2MOVSsi ? ARM::CPSR : 0));
7434 TmpInst.addOperand(Inst.getOperand(1)); // Rn
7435 if (newOpc != ARM::t2RRX)
7436 TmpInst.addOperand(MCOperand::CreateImm(Amount));
7437 TmpInst.addOperand(Inst.getOperand(3)); // CondCode
7438 TmpInst.addOperand(Inst.getOperand(4));
7440 TmpInst.addOperand(MCOperand::CreateReg(
7441 Inst.getOpcode() == ARM::t2MOVSsi ? ARM::CPSR : 0));
7445 // Handle the ARM mode MOV complex aliases.
7450 ARM_AM::ShiftOpc ShiftTy;
7451 switch(Inst.getOpcode()) {
7452 default: llvm_unreachable("unexpected opcode!");
7453 case ARM::ASRr: ShiftTy = ARM_AM::asr; break;
7454 case ARM::LSRr: ShiftTy = ARM_AM::lsr; break;
7455 case ARM::LSLr: ShiftTy = ARM_AM::lsl; break;
7456 case ARM::RORr: ShiftTy = ARM_AM::ror; break;
7458 unsigned Shifter = ARM_AM::getSORegOpc(ShiftTy, 0);
7460 TmpInst.setOpcode(ARM::MOVsr);
7461 TmpInst.addOperand(Inst.getOperand(0)); // Rd
7462 TmpInst.addOperand(Inst.getOperand(1)); // Rn
7463 TmpInst.addOperand(Inst.getOperand(2)); // Rm
7464 TmpInst.addOperand(MCOperand::CreateImm(Shifter)); // Shift value and ty
7465 TmpInst.addOperand(Inst.getOperand(3)); // CondCode
7466 TmpInst.addOperand(Inst.getOperand(4));
7467 TmpInst.addOperand(Inst.getOperand(5)); // cc_out
7475 ARM_AM::ShiftOpc ShiftTy;
7476 switch(Inst.getOpcode()) {
7477 default: llvm_unreachable("unexpected opcode!");
7478 case ARM::ASRi: ShiftTy = ARM_AM::asr; break;
7479 case ARM::LSRi: ShiftTy = ARM_AM::lsr; break;
7480 case ARM::LSLi: ShiftTy = ARM_AM::lsl; break;
7481 case ARM::RORi: ShiftTy = ARM_AM::ror; break;
7483 // A shift by zero is a plain MOVr, not a MOVsi.
7484 unsigned Amt = Inst.getOperand(2).getImm();
7485 unsigned Opc = Amt == 0 ? ARM::MOVr : ARM::MOVsi;
7486 // A shift by 32 should be encoded as 0 when permitted
7487 if (Amt == 32 && (ShiftTy == ARM_AM::lsr || ShiftTy == ARM_AM::asr))
7489 unsigned Shifter = ARM_AM::getSORegOpc(ShiftTy, Amt);
7491 TmpInst.setOpcode(Opc);
7492 TmpInst.addOperand(Inst.getOperand(0)); // Rd
7493 TmpInst.addOperand(Inst.getOperand(1)); // Rn
7494 if (Opc == ARM::MOVsi)
7495 TmpInst.addOperand(MCOperand::CreateImm(Shifter)); // Shift value and ty
7496 TmpInst.addOperand(Inst.getOperand(3)); // CondCode
7497 TmpInst.addOperand(Inst.getOperand(4));
7498 TmpInst.addOperand(Inst.getOperand(5)); // cc_out
7503 unsigned Shifter = ARM_AM::getSORegOpc(ARM_AM::rrx, 0);
7505 TmpInst.setOpcode(ARM::MOVsi);
7506 TmpInst.addOperand(Inst.getOperand(0)); // Rd
7507 TmpInst.addOperand(Inst.getOperand(1)); // Rn
7508 TmpInst.addOperand(MCOperand::CreateImm(Shifter)); // Shift value and ty
7509 TmpInst.addOperand(Inst.getOperand(2)); // CondCode
7510 TmpInst.addOperand(Inst.getOperand(3));
7511 TmpInst.addOperand(Inst.getOperand(4)); // cc_out
7515 case ARM::t2LDMIA_UPD: {
7516 // If this is a load of a single register, then we should use
7517 // a post-indexed LDR instruction instead, per the ARM ARM.
7518 if (Inst.getNumOperands() != 5)
7521 TmpInst.setOpcode(ARM::t2LDR_POST);
7522 TmpInst.addOperand(Inst.getOperand(4)); // Rt
7523 TmpInst.addOperand(Inst.getOperand(0)); // Rn_wb
7524 TmpInst.addOperand(Inst.getOperand(1)); // Rn
7525 TmpInst.addOperand(MCOperand::CreateImm(4));
7526 TmpInst.addOperand(Inst.getOperand(2)); // CondCode
7527 TmpInst.addOperand(Inst.getOperand(3));
7531 case ARM::t2STMDB_UPD: {
7532 // If this is a store of a single register, then we should use
7533 // a pre-indexed STR instruction instead, per the ARM ARM.
7534 if (Inst.getNumOperands() != 5)
7537 TmpInst.setOpcode(ARM::t2STR_PRE);
7538 TmpInst.addOperand(Inst.getOperand(0)); // Rn_wb
7539 TmpInst.addOperand(Inst.getOperand(4)); // Rt
7540 TmpInst.addOperand(Inst.getOperand(1)); // Rn
7541 TmpInst.addOperand(MCOperand::CreateImm(-4));
7542 TmpInst.addOperand(Inst.getOperand(2)); // CondCode
7543 TmpInst.addOperand(Inst.getOperand(3));
7547 case ARM::LDMIA_UPD:
7548 // If this is a load of a single register via a 'pop', then we should use
7549 // a post-indexed LDR instruction instead, per the ARM ARM.
7550 if (static_cast<ARMOperand &>(*Operands[0]).getToken() == "pop" &&
7551 Inst.getNumOperands() == 5) {
7553 TmpInst.setOpcode(ARM::LDR_POST_IMM);
7554 TmpInst.addOperand(Inst.getOperand(4)); // Rt
7555 TmpInst.addOperand(Inst.getOperand(0)); // Rn_wb
7556 TmpInst.addOperand(Inst.getOperand(1)); // Rn
7557 TmpInst.addOperand(MCOperand::CreateReg(0)); // am2offset
7558 TmpInst.addOperand(MCOperand::CreateImm(4));
7559 TmpInst.addOperand(Inst.getOperand(2)); // CondCode
7560 TmpInst.addOperand(Inst.getOperand(3));
7565 case ARM::STMDB_UPD:
7566 // If this is a store of a single register via a 'push', then we should use
7567 // a pre-indexed STR instruction instead, per the ARM ARM.
7568 if (static_cast<ARMOperand &>(*Operands[0]).getToken() == "push" &&
7569 Inst.getNumOperands() == 5) {
7571 TmpInst.setOpcode(ARM::STR_PRE_IMM);
7572 TmpInst.addOperand(Inst.getOperand(0)); // Rn_wb
7573 TmpInst.addOperand(Inst.getOperand(4)); // Rt
7574 TmpInst.addOperand(Inst.getOperand(1)); // addrmode_imm12
7575 TmpInst.addOperand(MCOperand::CreateImm(-4));
7576 TmpInst.addOperand(Inst.getOperand(2)); // CondCode
7577 TmpInst.addOperand(Inst.getOperand(3));
7581 case ARM::t2ADDri12:
7582 // If the immediate fits for encoding T3 (t2ADDri) and the generic "add"
7583 // mnemonic was used (not "addw"), encoding T3 is preferred.
7584 if (static_cast<ARMOperand &>(*Operands[0]).getToken() != "add" ||
7585 ARM_AM::getT2SOImmVal(Inst.getOperand(2).getImm()) == -1)
7587 Inst.setOpcode(ARM::t2ADDri);
7588 Inst.addOperand(MCOperand::CreateReg(0)); // cc_out
7590 case ARM::t2SUBri12:
7591 // If the immediate fits for encoding T3 (t2SUBri) and the generic "sub"
7592 // mnemonic was used (not "subw"), encoding T3 is preferred.
7593 if (static_cast<ARMOperand &>(*Operands[0]).getToken() != "sub" ||
7594 ARM_AM::getT2SOImmVal(Inst.getOperand(2).getImm()) == -1)
7596 Inst.setOpcode(ARM::t2SUBri);
7597 Inst.addOperand(MCOperand::CreateReg(0)); // cc_out
7600 // If the immediate is in the range 0-7, we want tADDi3 iff Rd was
7601 // explicitly specified. From the ARM ARM: "Encoding T1 is preferred
7602 // to encoding T2 if <Rd> is specified and encoding T2 is preferred
7603 // to encoding T1 if <Rd> is omitted."
7604 if ((unsigned)Inst.getOperand(3).getImm() < 8 && Operands.size() == 6) {
7605 Inst.setOpcode(ARM::tADDi3);
7610 // If the immediate is in the range 0-7, we want tADDi3 iff Rd was
7611 // explicitly specified. From the ARM ARM: "Encoding T1 is preferred
7612 // to encoding T2 if <Rd> is specified and encoding T2 is preferred
7613 // to encoding T1 if <Rd> is omitted."
7614 if ((unsigned)Inst.getOperand(3).getImm() < 8 && Operands.size() == 6) {
7615 Inst.setOpcode(ARM::tSUBi3);
7620 case ARM::t2SUBri: {
7621 // If the destination and first source operand are the same, and
7622 // the flags are compatible with the current IT status, use encoding T2
7623 // instead of T3. For compatibility with the system 'as'. Make sure the
7624 // wide encoding wasn't explicit.
7625 if (Inst.getOperand(0).getReg() != Inst.getOperand(1).getReg() ||
7626 !isARMLowRegister(Inst.getOperand(0).getReg()) ||
7627 (unsigned)Inst.getOperand(2).getImm() > 255 ||
7628 ((!inITBlock() && Inst.getOperand(5).getReg() != ARM::CPSR) ||
7629 (inITBlock() && Inst.getOperand(5).getReg() != 0)) ||
7630 (static_cast<ARMOperand &>(*Operands[3]).isToken() &&
7631 static_cast<ARMOperand &>(*Operands[3]).getToken() == ".w"))
7634 TmpInst.setOpcode(Inst.getOpcode() == ARM::t2ADDri ?
7635 ARM::tADDi8 : ARM::tSUBi8);
7636 TmpInst.addOperand(Inst.getOperand(0));
7637 TmpInst.addOperand(Inst.getOperand(5));
7638 TmpInst.addOperand(Inst.getOperand(0));
7639 TmpInst.addOperand(Inst.getOperand(2));
7640 TmpInst.addOperand(Inst.getOperand(3));
7641 TmpInst.addOperand(Inst.getOperand(4));
7645 case ARM::t2ADDrr: {
7646 // If the destination and first source operand are the same, and
7647 // there's no setting of the flags, use encoding T2 instead of T3.
7648 // Note that this is only for ADD, not SUB. This mirrors the system
7649 // 'as' behaviour. Make sure the wide encoding wasn't explicit.
7650 if (Inst.getOperand(0).getReg() != Inst.getOperand(1).getReg() ||
7651 Inst.getOperand(5).getReg() != 0 ||
7652 (static_cast<ARMOperand &>(*Operands[3]).isToken() &&
7653 static_cast<ARMOperand &>(*Operands[3]).getToken() == ".w"))
7656 TmpInst.setOpcode(ARM::tADDhirr);
7657 TmpInst.addOperand(Inst.getOperand(0));
7658 TmpInst.addOperand(Inst.getOperand(0));
7659 TmpInst.addOperand(Inst.getOperand(2));
7660 TmpInst.addOperand(Inst.getOperand(3));
7661 TmpInst.addOperand(Inst.getOperand(4));
7665 case ARM::tADDrSP: {
7666 // If the non-SP source operand and the destination operand are not the
7667 // same, we need to use the 32-bit encoding if it's available.
7668 if (Inst.getOperand(0).getReg() != Inst.getOperand(2).getReg()) {
7669 Inst.setOpcode(ARM::t2ADDrr);
7670 Inst.addOperand(MCOperand::CreateReg(0)); // cc_out
7676 // A Thumb conditional branch outside of an IT block is a tBcc.
7677 if (Inst.getOperand(1).getImm() != ARMCC::AL && !inITBlock()) {
7678 Inst.setOpcode(ARM::tBcc);
7683 // A Thumb2 conditional branch outside of an IT block is a t2Bcc.
7684 if (Inst.getOperand(1).getImm() != ARMCC::AL && !inITBlock()){
7685 Inst.setOpcode(ARM::t2Bcc);
7690 // If the conditional is AL or we're in an IT block, we really want t2B.
7691 if (Inst.getOperand(1).getImm() == ARMCC::AL || inITBlock()) {
7692 Inst.setOpcode(ARM::t2B);
7697 // If the conditional is AL, we really want tB.
7698 if (Inst.getOperand(1).getImm() == ARMCC::AL) {
7699 Inst.setOpcode(ARM::tB);
7704 // If the register list contains any high registers, or if the writeback
7705 // doesn't match what tLDMIA can do, we need to use the 32-bit encoding
7706 // instead if we're in Thumb2. Otherwise, this should have generated
7707 // an error in validateInstruction().
7708 unsigned Rn = Inst.getOperand(0).getReg();
7709 bool hasWritebackToken =
7710 (static_cast<ARMOperand &>(*Operands[3]).isToken() &&
7711 static_cast<ARMOperand &>(*Operands[3]).getToken() == "!");
7712 bool listContainsBase;
7713 if (checkLowRegisterList(Inst, 3, Rn, 0, listContainsBase) ||
7714 (!listContainsBase && !hasWritebackToken) ||
7715 (listContainsBase && hasWritebackToken)) {
7716 // 16-bit encoding isn't sufficient. Switch to the 32-bit version.
7717 assert (isThumbTwo());
7718 Inst.setOpcode(hasWritebackToken ? ARM::t2LDMIA_UPD : ARM::t2LDMIA);
7719 // If we're switching to the updating version, we need to insert
7720 // the writeback tied operand.
7721 if (hasWritebackToken)
7722 Inst.insert(Inst.begin(),
7723 MCOperand::CreateReg(Inst.getOperand(0).getReg()));
7728 case ARM::tSTMIA_UPD: {
7729 // If the register list contains any high registers, we need to use
7730 // the 32-bit encoding instead if we're in Thumb2. Otherwise, this
7731 // should have generated an error in validateInstruction().
7732 unsigned Rn = Inst.getOperand(0).getReg();
7733 bool listContainsBase;
7734 if (checkLowRegisterList(Inst, 4, Rn, 0, listContainsBase)) {
7735 // 16-bit encoding isn't sufficient. Switch to the 32-bit version.
7736 assert (isThumbTwo());
7737 Inst.setOpcode(ARM::t2STMIA_UPD);
7743 bool listContainsBase;
7744 // If the register list contains any high registers, we need to use
7745 // the 32-bit encoding instead if we're in Thumb2. Otherwise, this
7746 // should have generated an error in validateInstruction().
7747 if (!checkLowRegisterList(Inst, 2, 0, ARM::PC, listContainsBase))
7749 assert (isThumbTwo());
7750 Inst.setOpcode(ARM::t2LDMIA_UPD);
7751 // Add the base register and writeback operands.
7752 Inst.insert(Inst.begin(), MCOperand::CreateReg(ARM::SP));
7753 Inst.insert(Inst.begin(), MCOperand::CreateReg(ARM::SP));
7757 bool listContainsBase;
7758 if (!checkLowRegisterList(Inst, 2, 0, ARM::LR, listContainsBase))
7760 assert (isThumbTwo());
7761 Inst.setOpcode(ARM::t2STMDB_UPD);
7762 // Add the base register and writeback operands.
7763 Inst.insert(Inst.begin(), MCOperand::CreateReg(ARM::SP));
7764 Inst.insert(Inst.begin(), MCOperand::CreateReg(ARM::SP));
7768 // If we can use the 16-bit encoding and the user didn't explicitly
7769 // request the 32-bit variant, transform it here.
7770 if (isARMLowRegister(Inst.getOperand(0).getReg()) &&
7771 (unsigned)Inst.getOperand(1).getImm() <= 255 &&
7772 ((!inITBlock() && Inst.getOperand(2).getImm() == ARMCC::AL &&
7773 Inst.getOperand(4).getReg() == ARM::CPSR) ||
7774 (inITBlock() && Inst.getOperand(4).getReg() == 0)) &&
7775 (!static_cast<ARMOperand &>(*Operands[2]).isToken() ||
7776 static_cast<ARMOperand &>(*Operands[2]).getToken() != ".w")) {
7777 // The operands aren't in the same order for tMOVi8...
7779 TmpInst.setOpcode(ARM::tMOVi8);
7780 TmpInst.addOperand(Inst.getOperand(0));
7781 TmpInst.addOperand(Inst.getOperand(4));
7782 TmpInst.addOperand(Inst.getOperand(1));
7783 TmpInst.addOperand(Inst.getOperand(2));
7784 TmpInst.addOperand(Inst.getOperand(3));
7791 // If we can use the 16-bit encoding and the user didn't explicitly
7792 // request the 32-bit variant, transform it here.
7793 if (isARMLowRegister(Inst.getOperand(0).getReg()) &&
7794 isARMLowRegister(Inst.getOperand(1).getReg()) &&
7795 Inst.getOperand(2).getImm() == ARMCC::AL &&
7796 Inst.getOperand(4).getReg() == ARM::CPSR &&
7797 (!static_cast<ARMOperand &>(*Operands[2]).isToken() ||
7798 static_cast<ARMOperand &>(*Operands[2]).getToken() != ".w")) {
7799 // The operands aren't the same for tMOV[S]r... (no cc_out)
7801 TmpInst.setOpcode(Inst.getOperand(4).getReg() ? ARM::tMOVSr : ARM::tMOVr);
7802 TmpInst.addOperand(Inst.getOperand(0));
7803 TmpInst.addOperand(Inst.getOperand(1));
7804 TmpInst.addOperand(Inst.getOperand(2));
7805 TmpInst.addOperand(Inst.getOperand(3));
7815 // If we can use the 16-bit encoding and the user didn't explicitly
7816 // request the 32-bit variant, transform it here.
7817 if (isARMLowRegister(Inst.getOperand(0).getReg()) &&
7818 isARMLowRegister(Inst.getOperand(1).getReg()) &&
7819 Inst.getOperand(2).getImm() == 0 &&
7820 (!static_cast<ARMOperand &>(*Operands[2]).isToken() ||
7821 static_cast<ARMOperand &>(*Operands[2]).getToken() != ".w")) {
7823 switch (Inst.getOpcode()) {
7824 default: llvm_unreachable("Illegal opcode!");
7825 case ARM::t2SXTH: NewOpc = ARM::tSXTH; break;
7826 case ARM::t2SXTB: NewOpc = ARM::tSXTB; break;
7827 case ARM::t2UXTH: NewOpc = ARM::tUXTH; break;
7828 case ARM::t2UXTB: NewOpc = ARM::tUXTB; break;
7830 // The operands aren't the same for thumb1 (no rotate operand).
7832 TmpInst.setOpcode(NewOpc);
7833 TmpInst.addOperand(Inst.getOperand(0));
7834 TmpInst.addOperand(Inst.getOperand(1));
7835 TmpInst.addOperand(Inst.getOperand(3));
7836 TmpInst.addOperand(Inst.getOperand(4));
7843 ARM_AM::ShiftOpc SOpc = ARM_AM::getSORegShOp(Inst.getOperand(2).getImm());
7844 // rrx shifts and asr/lsr of #32 is encoded as 0
7845 if (SOpc == ARM_AM::rrx || SOpc == ARM_AM::asr || SOpc == ARM_AM::lsr)
7847 if (ARM_AM::getSORegOffset(Inst.getOperand(2).getImm()) == 0) {
7848 // Shifting by zero is accepted as a vanilla 'MOVr'
7850 TmpInst.setOpcode(ARM::MOVr);
7851 TmpInst.addOperand(Inst.getOperand(0));
7852 TmpInst.addOperand(Inst.getOperand(1));
7853 TmpInst.addOperand(Inst.getOperand(3));
7854 TmpInst.addOperand(Inst.getOperand(4));
7855 TmpInst.addOperand(Inst.getOperand(5));
7868 ARM_AM::ShiftOpc SOpc = ARM_AM::getSORegShOp(Inst.getOperand(3).getImm());
7869 if (SOpc == ARM_AM::rrx) return false;
7870 switch (Inst.getOpcode()) {
7871 default: llvm_unreachable("unexpected opcode!");
7872 case ARM::ANDrsi: newOpc = ARM::ANDrr; break;
7873 case ARM::ORRrsi: newOpc = ARM::ORRrr; break;
7874 case ARM::EORrsi: newOpc = ARM::EORrr; break;
7875 case ARM::BICrsi: newOpc = ARM::BICrr; break;
7876 case ARM::SUBrsi: newOpc = ARM::SUBrr; break;
7877 case ARM::ADDrsi: newOpc = ARM::ADDrr; break;
7879 // If the shift is by zero, use the non-shifted instruction definition.
7880 // The exception is for right shifts, where 0 == 32
7881 if (ARM_AM::getSORegOffset(Inst.getOperand(3).getImm()) == 0 &&
7882 !(SOpc == ARM_AM::lsr || SOpc == ARM_AM::asr)) {
7884 TmpInst.setOpcode(newOpc);
7885 TmpInst.addOperand(Inst.getOperand(0));
7886 TmpInst.addOperand(Inst.getOperand(1));
7887 TmpInst.addOperand(Inst.getOperand(2));
7888 TmpInst.addOperand(Inst.getOperand(4));
7889 TmpInst.addOperand(Inst.getOperand(5));
7890 TmpInst.addOperand(Inst.getOperand(6));
7898 // The mask bits for all but the first condition are represented as
7899 // the low bit of the condition code value implies 't'. We currently
7900 // always have 1 implies 't', so XOR toggle the bits if the low bit
7901 // of the condition code is zero.
7902 MCOperand &MO = Inst.getOperand(1);
7903 unsigned Mask = MO.getImm();
7904 unsigned OrigMask = Mask;
7905 unsigned TZ = countTrailingZeros(Mask);
7906 if ((Inst.getOperand(0).getImm() & 1) == 0) {
7907 assert(Mask && TZ <= 3 && "illegal IT mask value!");
7908 Mask ^= (0xE << TZ) & 0xF;
7912 // Set up the IT block state according to the IT instruction we just
7914 assert(!inITBlock() && "nested IT blocks?!");
7915 ITState.Cond = ARMCC::CondCodes(Inst.getOperand(0).getImm());
7916 ITState.Mask = OrigMask; // Use the original mask, not the updated one.
7917 ITState.CurPosition = 0;
7918 ITState.FirstCond = true;
7928 // Assemblers should use the narrow encodings of these instructions when permissible.
7929 if ((isARMLowRegister(Inst.getOperand(1).getReg()) &&
7930 isARMLowRegister(Inst.getOperand(2).getReg())) &&
7931 Inst.getOperand(0).getReg() == Inst.getOperand(1).getReg() &&
7932 ((!inITBlock() && Inst.getOperand(5).getReg() == ARM::CPSR) ||
7933 (inITBlock() && Inst.getOperand(5).getReg() != ARM::CPSR)) &&
7934 (!static_cast<ARMOperand &>(*Operands[3]).isToken() ||
7935 !static_cast<ARMOperand &>(*Operands[3]).getToken().equals_lower(
7938 switch (Inst.getOpcode()) {
7939 default: llvm_unreachable("unexpected opcode");
7940 case ARM::t2LSLrr: NewOpc = ARM::tLSLrr; break;
7941 case ARM::t2LSRrr: NewOpc = ARM::tLSRrr; break;
7942 case ARM::t2ASRrr: NewOpc = ARM::tASRrr; break;
7943 case ARM::t2SBCrr: NewOpc = ARM::tSBC; break;
7944 case ARM::t2RORrr: NewOpc = ARM::tROR; break;
7945 case ARM::t2BICrr: NewOpc = ARM::tBIC; break;
7948 TmpInst.setOpcode(NewOpc);
7949 TmpInst.addOperand(Inst.getOperand(0));
7950 TmpInst.addOperand(Inst.getOperand(5));
7951 TmpInst.addOperand(Inst.getOperand(1));
7952 TmpInst.addOperand(Inst.getOperand(2));
7953 TmpInst.addOperand(Inst.getOperand(3));
7954 TmpInst.addOperand(Inst.getOperand(4));
7965 // Assemblers should use the narrow encodings of these instructions when permissible.
7966 // These instructions are special in that they are commutable, so shorter encodings
7967 // are available more often.
7968 if ((isARMLowRegister(Inst.getOperand(1).getReg()) &&
7969 isARMLowRegister(Inst.getOperand(2).getReg())) &&
7970 (Inst.getOperand(0).getReg() == Inst.getOperand(1).getReg() ||
7971 Inst.getOperand(0).getReg() == Inst.getOperand(2).getReg()) &&
7972 ((!inITBlock() && Inst.getOperand(5).getReg() == ARM::CPSR) ||
7973 (inITBlock() && Inst.getOperand(5).getReg() != ARM::CPSR)) &&
7974 (!static_cast<ARMOperand &>(*Operands[3]).isToken() ||
7975 !static_cast<ARMOperand &>(*Operands[3]).getToken().equals_lower(
7978 switch (Inst.getOpcode()) {
7979 default: llvm_unreachable("unexpected opcode");
7980 case ARM::t2ADCrr: NewOpc = ARM::tADC; break;
7981 case ARM::t2ANDrr: NewOpc = ARM::tAND; break;
7982 case ARM::t2EORrr: NewOpc = ARM::tEOR; break;
7983 case ARM::t2ORRrr: NewOpc = ARM::tORR; break;
7986 TmpInst.setOpcode(NewOpc);
7987 TmpInst.addOperand(Inst.getOperand(0));
7988 TmpInst.addOperand(Inst.getOperand(5));
7989 if (Inst.getOperand(0).getReg() == Inst.getOperand(1).getReg()) {
7990 TmpInst.addOperand(Inst.getOperand(1));
7991 TmpInst.addOperand(Inst.getOperand(2));
7993 TmpInst.addOperand(Inst.getOperand(2));
7994 TmpInst.addOperand(Inst.getOperand(1));
7996 TmpInst.addOperand(Inst.getOperand(3));
7997 TmpInst.addOperand(Inst.getOperand(4));
8007 unsigned ARMAsmParser::checkTargetMatchPredicate(MCInst &Inst) {
8008 // 16-bit thumb arithmetic instructions either require or preclude the 'S'
8009 // suffix depending on whether they're in an IT block or not.
8010 unsigned Opc = Inst.getOpcode();
8011 const MCInstrDesc &MCID = MII.get(Opc);
8012 if (MCID.TSFlags & ARMII::ThumbArithFlagSetting) {
8013 assert(MCID.hasOptionalDef() &&
8014 "optionally flag setting instruction missing optional def operand");
8015 assert(MCID.NumOperands == Inst.getNumOperands() &&
8016 "operand count mismatch!");
8017 // Find the optional-def operand (cc_out).
8020 !MCID.OpInfo[OpNo].isOptionalDef() && OpNo < MCID.NumOperands;
8023 // If we're parsing Thumb1, reject it completely.
8024 if (isThumbOne() && Inst.getOperand(OpNo).getReg() != ARM::CPSR)
8025 return Match_MnemonicFail;
8026 // If we're parsing Thumb2, which form is legal depends on whether we're
8028 if (isThumbTwo() && Inst.getOperand(OpNo).getReg() != ARM::CPSR &&
8030 return Match_RequiresITBlock;
8031 if (isThumbTwo() && Inst.getOperand(OpNo).getReg() == ARM::CPSR &&
8033 return Match_RequiresNotITBlock;
8035 // Some high-register supporting Thumb1 encodings only allow both registers
8036 // to be from r0-r7 when in Thumb2.
8037 else if (Opc == ARM::tADDhirr && isThumbOne() &&
8038 isARMLowRegister(Inst.getOperand(1).getReg()) &&
8039 isARMLowRegister(Inst.getOperand(2).getReg()))
8040 return Match_RequiresThumb2;
8041 // Others only require ARMv6 or later.
8042 else if (Opc == ARM::tMOVr && isThumbOne() && !hasV6Ops() &&
8043 isARMLowRegister(Inst.getOperand(0).getReg()) &&
8044 isARMLowRegister(Inst.getOperand(1).getReg()))
8045 return Match_RequiresV6;
8046 return Match_Success;
8050 template <> inline bool IsCPSRDead<MCInst>(MCInst *Instr) {
8051 return true; // In an assembly source, no need to second-guess
8055 static const char *getSubtargetFeatureName(unsigned Val);
8056 bool ARMAsmParser::MatchAndEmitInstruction(SMLoc IDLoc, unsigned &Opcode,
8057 OperandVector &Operands,
8058 MCStreamer &Out, unsigned &ErrorInfo,
8059 bool MatchingInlineAsm) {
8061 unsigned MatchResult;
8063 MatchResult = MatchInstructionImpl(Operands, Inst, ErrorInfo,
8065 switch (MatchResult) {
8068 // Context sensitive operand constraints aren't handled by the matcher,
8069 // so check them here.
8070 if (validateInstruction(Inst, Operands)) {
8071 // Still progress the IT block, otherwise one wrong condition causes
8072 // nasty cascading errors.
8073 forwardITPosition();
8077 { // processInstruction() updates inITBlock state, we need to save it away
8078 bool wasInITBlock = inITBlock();
8080 // Some instructions need post-processing to, for example, tweak which
8081 // encoding is selected. Loop on it while changes happen so the
8082 // individual transformations can chain off each other. E.g.,
8083 // tPOP(r8)->t2LDMIA_UPD(sp,r8)->t2STR_POST(sp,r8)
8084 while (processInstruction(Inst, Operands, Out))
8087 // Only after the instruction is fully processed, we can validate it
8088 if (wasInITBlock && hasV8Ops() && isThumb() &&
8089 !isV8EligibleForIT(&Inst)) {
8090 Warning(IDLoc, "deprecated instruction in IT block");
8094 // Only move forward at the very end so that everything in validate
8095 // and process gets a consistent answer about whether we're in an IT
8097 forwardITPosition();
8099 // ITasm is an ARM mode pseudo-instruction that just sets the ITblock and
8100 // doesn't actually encode.
8101 if (Inst.getOpcode() == ARM::ITasm)
8105 Out.EmitInstruction(Inst, STI);
8107 case Match_MissingFeature: {
8108 assert(ErrorInfo && "Unknown missing feature!");
8109 // Special case the error message for the very common case where only
8110 // a single subtarget feature is missing (Thumb vs. ARM, e.g.).
8111 std::string Msg = "instruction requires:";
8113 for (unsigned i = 0; i < (sizeof(ErrorInfo)*8-1); ++i) {
8114 if (ErrorInfo & Mask) {
8116 Msg += getSubtargetFeatureName(ErrorInfo & Mask);
8120 return Error(IDLoc, Msg);
8122 case Match_InvalidOperand: {
8123 SMLoc ErrorLoc = IDLoc;
8124 if (ErrorInfo != ~0U) {
8125 if (ErrorInfo >= Operands.size())
8126 return Error(IDLoc, "too few operands for instruction");
8128 ErrorLoc = ((ARMOperand &)*Operands[ErrorInfo]).getStartLoc();
8129 if (ErrorLoc == SMLoc()) ErrorLoc = IDLoc;
8132 return Error(ErrorLoc, "invalid operand for instruction");
8134 case Match_MnemonicFail:
8135 return Error(IDLoc, "invalid instruction",
8136 ((ARMOperand &)*Operands[0]).getLocRange());
8137 case Match_RequiresNotITBlock:
8138 return Error(IDLoc, "flag setting instruction only valid outside IT block");
8139 case Match_RequiresITBlock:
8140 return Error(IDLoc, "instruction only valid inside IT block");
8141 case Match_RequiresV6:
8142 return Error(IDLoc, "instruction variant requires ARMv6 or later");
8143 case Match_RequiresThumb2:
8144 return Error(IDLoc, "instruction variant requires Thumb2");
8145 case Match_ImmRange0_15: {
8146 SMLoc ErrorLoc = ((ARMOperand &)*Operands[ErrorInfo]).getStartLoc();
8147 if (ErrorLoc == SMLoc()) ErrorLoc = IDLoc;
8148 return Error(ErrorLoc, "immediate operand must be in the range [0,15]");
8150 case Match_ImmRange0_239: {
8151 SMLoc ErrorLoc = ((ARMOperand &)*Operands[ErrorInfo]).getStartLoc();
8152 if (ErrorLoc == SMLoc()) ErrorLoc = IDLoc;
8153 return Error(ErrorLoc, "immediate operand must be in the range [0,239]");
8155 case Match_AlignedMemoryRequiresNone:
8156 case Match_DupAlignedMemoryRequiresNone:
8157 case Match_AlignedMemoryRequires16:
8158 case Match_DupAlignedMemoryRequires16:
8159 case Match_AlignedMemoryRequires32:
8160 case Match_DupAlignedMemoryRequires32:
8161 case Match_AlignedMemoryRequires64:
8162 case Match_DupAlignedMemoryRequires64:
8163 case Match_AlignedMemoryRequires64or128:
8164 case Match_DupAlignedMemoryRequires64or128:
8165 case Match_AlignedMemoryRequires64or128or256:
8167 SMLoc ErrorLoc = ((ARMOperand &)*Operands[ErrorInfo]).getAlignmentLoc();
8168 if (ErrorLoc == SMLoc()) ErrorLoc = IDLoc;
8169 switch (MatchResult) {
8171 llvm_unreachable("Missing Match_Aligned type");
8172 case Match_AlignedMemoryRequiresNone:
8173 case Match_DupAlignedMemoryRequiresNone:
8174 return Error(ErrorLoc, "alignment must be omitted");
8175 case Match_AlignedMemoryRequires16:
8176 case Match_DupAlignedMemoryRequires16:
8177 return Error(ErrorLoc, "alignment must be 16 or omitted");
8178 case Match_AlignedMemoryRequires32:
8179 case Match_DupAlignedMemoryRequires32:
8180 return Error(ErrorLoc, "alignment must be 32 or omitted");
8181 case Match_AlignedMemoryRequires64:
8182 case Match_DupAlignedMemoryRequires64:
8183 return Error(ErrorLoc, "alignment must be 64 or omitted");
8184 case Match_AlignedMemoryRequires64or128:
8185 case Match_DupAlignedMemoryRequires64or128:
8186 return Error(ErrorLoc, "alignment must be 64, 128 or omitted");
8187 case Match_AlignedMemoryRequires64or128or256:
8188 return Error(ErrorLoc, "alignment must be 64, 128, 256 or omitted");
8193 llvm_unreachable("Implement any new match types added!");
8196 /// parseDirective parses the arm specific directives
8197 bool ARMAsmParser::ParseDirective(AsmToken DirectiveID) {
8198 const MCObjectFileInfo::Environment Format =
8199 getContext().getObjectFileInfo()->getObjectFileType();
8200 bool IsMachO = Format == MCObjectFileInfo::IsMachO;
8202 StringRef IDVal = DirectiveID.getIdentifier();
8203 if (IDVal == ".word")
8204 return parseLiteralValues(4, DirectiveID.getLoc());
8205 else if (IDVal == ".short" || IDVal == ".hword")
8206 return parseLiteralValues(2, DirectiveID.getLoc());
8207 else if (IDVal == ".thumb")
8208 return parseDirectiveThumb(DirectiveID.getLoc());
8209 else if (IDVal == ".arm")
8210 return parseDirectiveARM(DirectiveID.getLoc());
8211 else if (IDVal == ".thumb_func")
8212 return parseDirectiveThumbFunc(DirectiveID.getLoc());
8213 else if (IDVal == ".code")
8214 return parseDirectiveCode(DirectiveID.getLoc());
8215 else if (IDVal == ".syntax")
8216 return parseDirectiveSyntax(DirectiveID.getLoc());
8217 else if (IDVal == ".unreq")
8218 return parseDirectiveUnreq(DirectiveID.getLoc());
8219 else if (IDVal == ".fnend")
8220 return parseDirectiveFnEnd(DirectiveID.getLoc());
8221 else if (IDVal == ".cantunwind")
8222 return parseDirectiveCantUnwind(DirectiveID.getLoc());
8223 else if (IDVal == ".personality")
8224 return parseDirectivePersonality(DirectiveID.getLoc());
8225 else if (IDVal == ".handlerdata")
8226 return parseDirectiveHandlerData(DirectiveID.getLoc());
8227 else if (IDVal == ".setfp")
8228 return parseDirectiveSetFP(DirectiveID.getLoc());
8229 else if (IDVal == ".pad")
8230 return parseDirectivePad(DirectiveID.getLoc());
8231 else if (IDVal == ".save")
8232 return parseDirectiveRegSave(DirectiveID.getLoc(), false);
8233 else if (IDVal == ".vsave")
8234 return parseDirectiveRegSave(DirectiveID.getLoc(), true);
8235 else if (IDVal == ".ltorg" || IDVal == ".pool")
8236 return parseDirectiveLtorg(DirectiveID.getLoc());
8237 else if (IDVal == ".even")
8238 return parseDirectiveEven(DirectiveID.getLoc());
8239 else if (IDVal == ".personalityindex")
8240 return parseDirectivePersonalityIndex(DirectiveID.getLoc());
8241 else if (IDVal == ".unwind_raw")
8242 return parseDirectiveUnwindRaw(DirectiveID.getLoc());
8243 else if (IDVal == ".movsp")
8244 return parseDirectiveMovSP(DirectiveID.getLoc());
8245 else if (IDVal == ".arch_extension")
8246 return parseDirectiveArchExtension(DirectiveID.getLoc());
8247 else if (IDVal == ".align")
8248 return parseDirectiveAlign(DirectiveID.getLoc());
8249 else if (IDVal == ".thumb_set")
8250 return parseDirectiveThumbSet(DirectiveID.getLoc());
8253 if (IDVal == ".arch")
8254 return parseDirectiveArch(DirectiveID.getLoc());
8255 else if (IDVal == ".cpu")
8256 return parseDirectiveCPU(DirectiveID.getLoc());
8257 else if (IDVal == ".eabi_attribute")
8258 return parseDirectiveEabiAttr(DirectiveID.getLoc());
8259 else if (IDVal == ".fpu")
8260 return parseDirectiveFPU(DirectiveID.getLoc());
8261 else if (IDVal == ".fnstart")
8262 return parseDirectiveFnStart(DirectiveID.getLoc());
8263 else if (IDVal == ".inst")
8264 return parseDirectiveInst(DirectiveID.getLoc());
8265 else if (IDVal == ".inst.n")
8266 return parseDirectiveInst(DirectiveID.getLoc(), 'n');
8267 else if (IDVal == ".inst.w")
8268 return parseDirectiveInst(DirectiveID.getLoc(), 'w');
8269 else if (IDVal == ".object_arch")
8270 return parseDirectiveObjectArch(DirectiveID.getLoc());
8271 else if (IDVal == ".tlsdescseq")
8272 return parseDirectiveTLSDescSeq(DirectiveID.getLoc());
8278 /// parseLiteralValues
8279 /// ::= .hword expression [, expression]*
8280 /// ::= .short expression [, expression]*
8281 /// ::= .word expression [, expression]*
8282 bool ARMAsmParser::parseLiteralValues(unsigned Size, SMLoc L) {
8283 if (getLexer().isNot(AsmToken::EndOfStatement)) {
8285 const MCExpr *Value;
8286 if (getParser().parseExpression(Value)) {
8287 Parser.eatToEndOfStatement();
8291 getParser().getStreamer().EmitValue(Value, Size);
8293 if (getLexer().is(AsmToken::EndOfStatement))
8296 // FIXME: Improve diagnostic.
8297 if (getLexer().isNot(AsmToken::Comma)) {
8298 Error(L, "unexpected token in directive");
8309 /// parseDirectiveThumb
8311 bool ARMAsmParser::parseDirectiveThumb(SMLoc L) {
8312 if (getLexer().isNot(AsmToken::EndOfStatement)) {
8313 Error(L, "unexpected token in directive");
8319 Error(L, "target does not support Thumb mode");
8326 getParser().getStreamer().EmitAssemblerFlag(MCAF_Code16);
8330 /// parseDirectiveARM
8332 bool ARMAsmParser::parseDirectiveARM(SMLoc L) {
8333 if (getLexer().isNot(AsmToken::EndOfStatement)) {
8334 Error(L, "unexpected token in directive");
8340 Error(L, "target does not support ARM mode");
8347 getParser().getStreamer().EmitAssemblerFlag(MCAF_Code32);
8351 void ARMAsmParser::onLabelParsed(MCSymbol *Symbol) {
8352 if (NextSymbolIsThumb) {
8353 getParser().getStreamer().EmitThumbFunc(Symbol);
8354 NextSymbolIsThumb = false;
8358 /// parseDirectiveThumbFunc
8359 /// ::= .thumbfunc symbol_name
8360 bool ARMAsmParser::parseDirectiveThumbFunc(SMLoc L) {
8361 const MCAsmInfo *MAI = getParser().getStreamer().getContext().getAsmInfo();
8362 bool isMachO = MAI->hasSubsectionsViaSymbols();
8364 // Darwin asm has (optionally) function name after .thumb_func direction
8367 const AsmToken &Tok = Parser.getTok();
8368 if (Tok.isNot(AsmToken::EndOfStatement)) {
8369 if (Tok.isNot(AsmToken::Identifier) && Tok.isNot(AsmToken::String)) {
8370 Error(L, "unexpected token in .thumb_func directive");
8375 getParser().getContext().GetOrCreateSymbol(Tok.getIdentifier());
8376 getParser().getStreamer().EmitThumbFunc(Func);
8377 Parser.Lex(); // Consume the identifier token.
8382 if (getLexer().isNot(AsmToken::EndOfStatement)) {
8383 Error(L, "unexpected token in directive");
8387 NextSymbolIsThumb = true;
8391 /// parseDirectiveSyntax
8392 /// ::= .syntax unified | divided
8393 bool ARMAsmParser::parseDirectiveSyntax(SMLoc L) {
8394 const AsmToken &Tok = Parser.getTok();
8395 if (Tok.isNot(AsmToken::Identifier)) {
8396 Error(L, "unexpected token in .syntax directive");
8400 StringRef Mode = Tok.getString();
8401 if (Mode == "unified" || Mode == "UNIFIED") {
8403 } else if (Mode == "divided" || Mode == "DIVIDED") {
8404 Error(L, "'.syntax divided' arm asssembly not supported");
8407 Error(L, "unrecognized syntax mode in .syntax directive");
8411 if (getLexer().isNot(AsmToken::EndOfStatement)) {
8412 Error(Parser.getTok().getLoc(), "unexpected token in directive");
8417 // TODO tell the MC streamer the mode
8418 // getParser().getStreamer().Emit???();
8422 /// parseDirectiveCode
8423 /// ::= .code 16 | 32
8424 bool ARMAsmParser::parseDirectiveCode(SMLoc L) {
8425 const AsmToken &Tok = Parser.getTok();
8426 if (Tok.isNot(AsmToken::Integer)) {
8427 Error(L, "unexpected token in .code directive");
8430 int64_t Val = Parser.getTok().getIntVal();
8431 if (Val != 16 && Val != 32) {
8432 Error(L, "invalid operand to .code directive");
8437 if (getLexer().isNot(AsmToken::EndOfStatement)) {
8438 Error(Parser.getTok().getLoc(), "unexpected token in directive");
8445 Error(L, "target does not support Thumb mode");
8451 getParser().getStreamer().EmitAssemblerFlag(MCAF_Code16);
8454 Error(L, "target does not support ARM mode");
8460 getParser().getStreamer().EmitAssemblerFlag(MCAF_Code32);
8466 /// parseDirectiveReq
8467 /// ::= name .req registername
8468 bool ARMAsmParser::parseDirectiveReq(StringRef Name, SMLoc L) {
8469 Parser.Lex(); // Eat the '.req' token.
8471 SMLoc SRegLoc, ERegLoc;
8472 if (ParseRegister(Reg, SRegLoc, ERegLoc)) {
8473 Parser.eatToEndOfStatement();
8474 Error(SRegLoc, "register name expected");
8478 // Shouldn't be anything else.
8479 if (Parser.getTok().isNot(AsmToken::EndOfStatement)) {
8480 Parser.eatToEndOfStatement();
8481 Error(Parser.getTok().getLoc(), "unexpected input in .req directive.");
8485 Parser.Lex(); // Consume the EndOfStatement
8487 if (RegisterReqs.GetOrCreateValue(Name, Reg).getValue() != Reg) {
8488 Error(SRegLoc, "redefinition of '" + Name + "' does not match original.");
8495 /// parseDirectiveUneq
8496 /// ::= .unreq registername
8497 bool ARMAsmParser::parseDirectiveUnreq(SMLoc L) {
8498 if (Parser.getTok().isNot(AsmToken::Identifier)) {
8499 Parser.eatToEndOfStatement();
8500 Error(L, "unexpected input in .unreq directive.");
8503 RegisterReqs.erase(Parser.getTok().getIdentifier().lower());
8504 Parser.Lex(); // Eat the identifier.
8508 /// parseDirectiveArch
8510 bool ARMAsmParser::parseDirectiveArch(SMLoc L) {
8511 StringRef Arch = getParser().parseStringToEndOfStatement().trim();
8513 unsigned ID = StringSwitch<unsigned>(Arch)
8514 #define ARM_ARCH_NAME(NAME, ID, DEFAULT_CPU_NAME, DEFAULT_CPU_ARCH) \
8515 .Case(NAME, ARM::ID)
8516 #define ARM_ARCH_ALIAS(NAME, ID) \
8517 .Case(NAME, ARM::ID)
8518 #include "MCTargetDesc/ARMArchName.def"
8519 .Default(ARM::INVALID_ARCH);
8521 if (ID == ARM::INVALID_ARCH) {
8522 Error(L, "Unknown arch name");
8526 getTargetStreamer().emitArch(ID);
8530 /// parseDirectiveEabiAttr
8531 /// ::= .eabi_attribute int, int [, "str"]
8532 /// ::= .eabi_attribute Tag_name, int [, "str"]
8533 bool ARMAsmParser::parseDirectiveEabiAttr(SMLoc L) {
8536 TagLoc = Parser.getTok().getLoc();
8537 if (Parser.getTok().is(AsmToken::Identifier)) {
8538 StringRef Name = Parser.getTok().getIdentifier();
8539 Tag = ARMBuildAttrs::AttrTypeFromString(Name);
8541 Error(TagLoc, "attribute name not recognised: " + Name);
8542 Parser.eatToEndOfStatement();
8547 const MCExpr *AttrExpr;
8549 TagLoc = Parser.getTok().getLoc();
8550 if (Parser.parseExpression(AttrExpr)) {
8551 Parser.eatToEndOfStatement();
8555 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(AttrExpr);
8557 Error(TagLoc, "expected numeric constant");
8558 Parser.eatToEndOfStatement();
8562 Tag = CE->getValue();
8565 if (Parser.getTok().isNot(AsmToken::Comma)) {
8566 Error(Parser.getTok().getLoc(), "comma expected");
8567 Parser.eatToEndOfStatement();
8570 Parser.Lex(); // skip comma
8572 StringRef StringValue = "";
8573 bool IsStringValue = false;
8575 int64_t IntegerValue = 0;
8576 bool IsIntegerValue = false;
8578 if (Tag == ARMBuildAttrs::CPU_raw_name || Tag == ARMBuildAttrs::CPU_name)
8579 IsStringValue = true;
8580 else if (Tag == ARMBuildAttrs::compatibility) {
8581 IsStringValue = true;
8582 IsIntegerValue = true;
8583 } else if (Tag < 32 || Tag % 2 == 0)
8584 IsIntegerValue = true;
8585 else if (Tag % 2 == 1)
8586 IsStringValue = true;
8588 llvm_unreachable("invalid tag type");
8590 if (IsIntegerValue) {
8591 const MCExpr *ValueExpr;
8592 SMLoc ValueExprLoc = Parser.getTok().getLoc();
8593 if (Parser.parseExpression(ValueExpr)) {
8594 Parser.eatToEndOfStatement();
8598 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(ValueExpr);
8600 Error(ValueExprLoc, "expected numeric constant");
8601 Parser.eatToEndOfStatement();
8605 IntegerValue = CE->getValue();
8608 if (Tag == ARMBuildAttrs::compatibility) {
8609 if (Parser.getTok().isNot(AsmToken::Comma))
8610 IsStringValue = false;
8615 if (IsStringValue) {
8616 if (Parser.getTok().isNot(AsmToken::String)) {
8617 Error(Parser.getTok().getLoc(), "bad string constant");
8618 Parser.eatToEndOfStatement();
8622 StringValue = Parser.getTok().getStringContents();
8626 if (IsIntegerValue && IsStringValue) {
8627 assert(Tag == ARMBuildAttrs::compatibility);
8628 getTargetStreamer().emitIntTextAttribute(Tag, IntegerValue, StringValue);
8629 } else if (IsIntegerValue)
8630 getTargetStreamer().emitAttribute(Tag, IntegerValue);
8631 else if (IsStringValue)
8632 getTargetStreamer().emitTextAttribute(Tag, StringValue);
8636 /// parseDirectiveCPU
8638 bool ARMAsmParser::parseDirectiveCPU(SMLoc L) {
8639 StringRef CPU = getParser().parseStringToEndOfStatement().trim();
8640 getTargetStreamer().emitTextAttribute(ARMBuildAttrs::CPU_name, CPU);
8642 if (!STI.isCPUStringValid(CPU)) {
8643 Error(L, "Unknown CPU name");
8647 // FIXME: This switches the CPU features globally, therefore it might
8648 // happen that code you would not expect to assemble will. For details
8649 // see: http://llvm.org/bugs/show_bug.cgi?id=20757
8650 STI.InitMCProcessorInfo(CPU, "");
8651 STI.InitCPUSchedModel(CPU);
8652 unsigned FB = ComputeAvailableFeatures(STI.getFeatureBits());
8653 setAvailableFeatures(FB);
8658 // FIXME: This is duplicated in getARMFPUFeatures() in
8659 // tools/clang/lib/Driver/Tools.cpp
8660 static const struct {
8662 const uint64_t Enabled;
8663 const uint64_t Disabled;
8665 {ARM::VFP, ARM::FeatureVFP2, ARM::FeatureNEON},
8666 {ARM::VFPV2, ARM::FeatureVFP2, ARM::FeatureNEON},
8667 {ARM::VFPV3, ARM::FeatureVFP3, ARM::FeatureNEON},
8668 {ARM::VFPV3_D16, ARM::FeatureVFP3 | ARM::FeatureD16, ARM::FeatureNEON},
8669 {ARM::VFPV4, ARM::FeatureVFP4, ARM::FeatureNEON},
8670 {ARM::VFPV4_D16, ARM::FeatureVFP4 | ARM::FeatureD16, ARM::FeatureNEON},
8671 {ARM::FP_ARMV8, ARM::FeatureFPARMv8,
8672 ARM::FeatureNEON | ARM::FeatureCrypto},
8673 {ARM::NEON, ARM::FeatureNEON, 0},
8674 {ARM::NEON_VFPV4, ARM::FeatureVFP4 | ARM::FeatureNEON, 0},
8675 {ARM::NEON_FP_ARMV8, ARM::FeatureFPARMv8 | ARM::FeatureNEON,
8676 ARM::FeatureCrypto},
8677 {ARM::CRYPTO_NEON_FP_ARMV8,
8678 ARM::FeatureFPARMv8 | ARM::FeatureNEON | ARM::FeatureCrypto, 0},
8679 {ARM::SOFTVFP, 0, 0},
8682 /// parseDirectiveFPU
8684 bool ARMAsmParser::parseDirectiveFPU(SMLoc L) {
8685 StringRef FPU = getParser().parseStringToEndOfStatement().trim();
8687 unsigned ID = StringSwitch<unsigned>(FPU)
8688 #define ARM_FPU_NAME(NAME, ID) .Case(NAME, ARM::ID)
8689 #include "ARMFPUName.def"
8690 .Default(ARM::INVALID_FPU);
8692 if (ID == ARM::INVALID_FPU) {
8693 Error(L, "Unknown FPU name");
8697 for (const auto &Fpu : Fpus) {
8701 // Need to toggle features that should be on but are off and that
8702 // should off but are on.
8703 unsigned Toggle = (Fpu.Enabled & ~STI.getFeatureBits()) |
8704 (Fpu.Disabled & STI.getFeatureBits());
8705 setAvailableFeatures(ComputeAvailableFeatures(STI.ToggleFeature(Toggle)));
8709 getTargetStreamer().emitFPU(ID);
8713 /// parseDirectiveFnStart
8715 bool ARMAsmParser::parseDirectiveFnStart(SMLoc L) {
8716 if (UC.hasFnStart()) {
8717 Error(L, ".fnstart starts before the end of previous one");
8718 UC.emitFnStartLocNotes();
8722 // Reset the unwind directives parser state
8725 getTargetStreamer().emitFnStart();
8727 UC.recordFnStart(L);
8731 /// parseDirectiveFnEnd
8733 bool ARMAsmParser::parseDirectiveFnEnd(SMLoc L) {
8734 // Check the ordering of unwind directives
8735 if (!UC.hasFnStart()) {
8736 Error(L, ".fnstart must precede .fnend directive");
8740 // Reset the unwind directives parser state
8741 getTargetStreamer().emitFnEnd();
8747 /// parseDirectiveCantUnwind
8749 bool ARMAsmParser::parseDirectiveCantUnwind(SMLoc L) {
8750 UC.recordCantUnwind(L);
8752 // Check the ordering of unwind directives
8753 if (!UC.hasFnStart()) {
8754 Error(L, ".fnstart must precede .cantunwind directive");
8757 if (UC.hasHandlerData()) {
8758 Error(L, ".cantunwind can't be used with .handlerdata directive");
8759 UC.emitHandlerDataLocNotes();
8762 if (UC.hasPersonality()) {
8763 Error(L, ".cantunwind can't be used with .personality directive");
8764 UC.emitPersonalityLocNotes();
8768 getTargetStreamer().emitCantUnwind();
8772 /// parseDirectivePersonality
8773 /// ::= .personality name
8774 bool ARMAsmParser::parseDirectivePersonality(SMLoc L) {
8775 bool HasExistingPersonality = UC.hasPersonality();
8777 UC.recordPersonality(L);
8779 // Check the ordering of unwind directives
8780 if (!UC.hasFnStart()) {
8781 Error(L, ".fnstart must precede .personality directive");
8784 if (UC.cantUnwind()) {
8785 Error(L, ".personality can't be used with .cantunwind directive");
8786 UC.emitCantUnwindLocNotes();
8789 if (UC.hasHandlerData()) {
8790 Error(L, ".personality must precede .handlerdata directive");
8791 UC.emitHandlerDataLocNotes();
8794 if (HasExistingPersonality) {
8795 Parser.eatToEndOfStatement();
8796 Error(L, "multiple personality directives");
8797 UC.emitPersonalityLocNotes();
8801 // Parse the name of the personality routine
8802 if (Parser.getTok().isNot(AsmToken::Identifier)) {
8803 Parser.eatToEndOfStatement();
8804 Error(L, "unexpected input in .personality directive.");
8807 StringRef Name(Parser.getTok().getIdentifier());
8810 MCSymbol *PR = getParser().getContext().GetOrCreateSymbol(Name);
8811 getTargetStreamer().emitPersonality(PR);
8815 /// parseDirectiveHandlerData
8816 /// ::= .handlerdata
8817 bool ARMAsmParser::parseDirectiveHandlerData(SMLoc L) {
8818 UC.recordHandlerData(L);
8820 // Check the ordering of unwind directives
8821 if (!UC.hasFnStart()) {
8822 Error(L, ".fnstart must precede .personality directive");
8825 if (UC.cantUnwind()) {
8826 Error(L, ".handlerdata can't be used with .cantunwind directive");
8827 UC.emitCantUnwindLocNotes();
8831 getTargetStreamer().emitHandlerData();
8835 /// parseDirectiveSetFP
8836 /// ::= .setfp fpreg, spreg [, offset]
8837 bool ARMAsmParser::parseDirectiveSetFP(SMLoc L) {
8838 // Check the ordering of unwind directives
8839 if (!UC.hasFnStart()) {
8840 Error(L, ".fnstart must precede .setfp directive");
8843 if (UC.hasHandlerData()) {
8844 Error(L, ".setfp must precede .handlerdata directive");
8849 SMLoc FPRegLoc = Parser.getTok().getLoc();
8850 int FPReg = tryParseRegister();
8852 Error(FPRegLoc, "frame pointer register expected");
8857 if (Parser.getTok().isNot(AsmToken::Comma)) {
8858 Error(Parser.getTok().getLoc(), "comma expected");
8861 Parser.Lex(); // skip comma
8864 SMLoc SPRegLoc = Parser.getTok().getLoc();
8865 int SPReg = tryParseRegister();
8867 Error(SPRegLoc, "stack pointer register expected");
8871 if (SPReg != ARM::SP && SPReg != UC.getFPReg()) {
8872 Error(SPRegLoc, "register should be either $sp or the latest fp register");
8876 // Update the frame pointer register
8877 UC.saveFPReg(FPReg);
8881 if (Parser.getTok().is(AsmToken::Comma)) {
8882 Parser.Lex(); // skip comma
8884 if (Parser.getTok().isNot(AsmToken::Hash) &&
8885 Parser.getTok().isNot(AsmToken::Dollar)) {
8886 Error(Parser.getTok().getLoc(), "'#' expected");
8889 Parser.Lex(); // skip hash token.
8891 const MCExpr *OffsetExpr;
8892 SMLoc ExLoc = Parser.getTok().getLoc();
8894 if (getParser().parseExpression(OffsetExpr, EndLoc)) {
8895 Error(ExLoc, "malformed setfp offset");
8898 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(OffsetExpr);
8900 Error(ExLoc, "setfp offset must be an immediate");
8904 Offset = CE->getValue();
8907 getTargetStreamer().emitSetFP(static_cast<unsigned>(FPReg),
8908 static_cast<unsigned>(SPReg), Offset);
8914 bool ARMAsmParser::parseDirectivePad(SMLoc L) {
8915 // Check the ordering of unwind directives
8916 if (!UC.hasFnStart()) {
8917 Error(L, ".fnstart must precede .pad directive");
8920 if (UC.hasHandlerData()) {
8921 Error(L, ".pad must precede .handlerdata directive");
8926 if (Parser.getTok().isNot(AsmToken::Hash) &&
8927 Parser.getTok().isNot(AsmToken::Dollar)) {
8928 Error(Parser.getTok().getLoc(), "'#' expected");
8931 Parser.Lex(); // skip hash token.
8933 const MCExpr *OffsetExpr;
8934 SMLoc ExLoc = Parser.getTok().getLoc();
8936 if (getParser().parseExpression(OffsetExpr, EndLoc)) {
8937 Error(ExLoc, "malformed pad offset");
8940 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(OffsetExpr);
8942 Error(ExLoc, "pad offset must be an immediate");
8946 getTargetStreamer().emitPad(CE->getValue());
8950 /// parseDirectiveRegSave
8951 /// ::= .save { registers }
8952 /// ::= .vsave { registers }
8953 bool ARMAsmParser::parseDirectiveRegSave(SMLoc L, bool IsVector) {
8954 // Check the ordering of unwind directives
8955 if (!UC.hasFnStart()) {
8956 Error(L, ".fnstart must precede .save or .vsave directives");
8959 if (UC.hasHandlerData()) {
8960 Error(L, ".save or .vsave must precede .handlerdata directive");
8964 // RAII object to make sure parsed operands are deleted.
8965 SmallVector<std::unique_ptr<MCParsedAsmOperand>, 1> Operands;
8967 // Parse the register list
8968 if (parseRegisterList(Operands))
8970 ARMOperand &Op = (ARMOperand &)*Operands[0];
8971 if (!IsVector && !Op.isRegList()) {
8972 Error(L, ".save expects GPR registers");
8975 if (IsVector && !Op.isDPRRegList()) {
8976 Error(L, ".vsave expects DPR registers");
8980 getTargetStreamer().emitRegSave(Op.getRegList(), IsVector);
8984 /// parseDirectiveInst
8985 /// ::= .inst opcode [, ...]
8986 /// ::= .inst.n opcode [, ...]
8987 /// ::= .inst.w opcode [, ...]
8988 bool ARMAsmParser::parseDirectiveInst(SMLoc Loc, char Suffix) {
9000 Parser.eatToEndOfStatement();
9001 Error(Loc, "cannot determine Thumb instruction size, "
9002 "use inst.n/inst.w instead");
9007 Parser.eatToEndOfStatement();
9008 Error(Loc, "width suffixes are invalid in ARM mode");
9014 if (getLexer().is(AsmToken::EndOfStatement)) {
9015 Parser.eatToEndOfStatement();
9016 Error(Loc, "expected expression following directive");
9023 if (getParser().parseExpression(Expr)) {
9024 Error(Loc, "expected expression");
9028 const MCConstantExpr *Value = dyn_cast_or_null<MCConstantExpr>(Expr);
9030 Error(Loc, "expected constant expression");
9036 if (Value->getValue() > 0xffff) {
9037 Error(Loc, "inst.n operand is too big, use inst.w instead");
9042 if (Value->getValue() > 0xffffffff) {
9044 StringRef(Suffix ? "inst.w" : "inst") + " operand is too big");
9049 llvm_unreachable("only supported widths are 2 and 4");
9052 getTargetStreamer().emitInst(Value->getValue(), Suffix);
9054 if (getLexer().is(AsmToken::EndOfStatement))
9057 if (getLexer().isNot(AsmToken::Comma)) {
9058 Error(Loc, "unexpected token in directive");
9069 /// parseDirectiveLtorg
9070 /// ::= .ltorg | .pool
9071 bool ARMAsmParser::parseDirectiveLtorg(SMLoc L) {
9072 getTargetStreamer().emitCurrentConstantPool();
9076 bool ARMAsmParser::parseDirectiveEven(SMLoc L) {
9077 const MCSection *Section = getStreamer().getCurrentSection().first;
9079 if (getLexer().isNot(AsmToken::EndOfStatement)) {
9080 TokError("unexpected token in directive");
9085 getStreamer().InitSections();
9086 Section = getStreamer().getCurrentSection().first;
9089 assert(Section && "must have section to emit alignment");
9090 if (Section->UseCodeAlign())
9091 getStreamer().EmitCodeAlignment(2);
9093 getStreamer().EmitValueToAlignment(2);
9098 /// parseDirectivePersonalityIndex
9099 /// ::= .personalityindex index
9100 bool ARMAsmParser::parseDirectivePersonalityIndex(SMLoc L) {
9101 bool HasExistingPersonality = UC.hasPersonality();
9103 UC.recordPersonalityIndex(L);
9105 if (!UC.hasFnStart()) {
9106 Parser.eatToEndOfStatement();
9107 Error(L, ".fnstart must precede .personalityindex directive");
9110 if (UC.cantUnwind()) {
9111 Parser.eatToEndOfStatement();
9112 Error(L, ".personalityindex cannot be used with .cantunwind");
9113 UC.emitCantUnwindLocNotes();
9116 if (UC.hasHandlerData()) {
9117 Parser.eatToEndOfStatement();
9118 Error(L, ".personalityindex must precede .handlerdata directive");
9119 UC.emitHandlerDataLocNotes();
9122 if (HasExistingPersonality) {
9123 Parser.eatToEndOfStatement();
9124 Error(L, "multiple personality directives");
9125 UC.emitPersonalityLocNotes();
9129 const MCExpr *IndexExpression;
9130 SMLoc IndexLoc = Parser.getTok().getLoc();
9131 if (Parser.parseExpression(IndexExpression)) {
9132 Parser.eatToEndOfStatement();
9136 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(IndexExpression);
9138 Parser.eatToEndOfStatement();
9139 Error(IndexLoc, "index must be a constant number");
9142 if (CE->getValue() < 0 ||
9143 CE->getValue() >= ARM::EHABI::NUM_PERSONALITY_INDEX) {
9144 Parser.eatToEndOfStatement();
9145 Error(IndexLoc, "personality routine index should be in range [0-3]");
9149 getTargetStreamer().emitPersonalityIndex(CE->getValue());
9153 /// parseDirectiveUnwindRaw
9154 /// ::= .unwind_raw offset, opcode [, opcode...]
9155 bool ARMAsmParser::parseDirectiveUnwindRaw(SMLoc L) {
9156 if (!UC.hasFnStart()) {
9157 Parser.eatToEndOfStatement();
9158 Error(L, ".fnstart must precede .unwind_raw directives");
9162 int64_t StackOffset;
9164 const MCExpr *OffsetExpr;
9165 SMLoc OffsetLoc = getLexer().getLoc();
9166 if (getLexer().is(AsmToken::EndOfStatement) ||
9167 getParser().parseExpression(OffsetExpr)) {
9168 Error(OffsetLoc, "expected expression");
9169 Parser.eatToEndOfStatement();
9173 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(OffsetExpr);
9175 Error(OffsetLoc, "offset must be a constant");
9176 Parser.eatToEndOfStatement();
9180 StackOffset = CE->getValue();
9182 if (getLexer().isNot(AsmToken::Comma)) {
9183 Error(getLexer().getLoc(), "expected comma");
9184 Parser.eatToEndOfStatement();
9189 SmallVector<uint8_t, 16> Opcodes;
9193 SMLoc OpcodeLoc = getLexer().getLoc();
9194 if (getLexer().is(AsmToken::EndOfStatement) || Parser.parseExpression(OE)) {
9195 Error(OpcodeLoc, "expected opcode expression");
9196 Parser.eatToEndOfStatement();
9200 const MCConstantExpr *OC = dyn_cast<MCConstantExpr>(OE);
9202 Error(OpcodeLoc, "opcode value must be a constant");
9203 Parser.eatToEndOfStatement();
9207 const int64_t Opcode = OC->getValue();
9208 if (Opcode & ~0xff) {
9209 Error(OpcodeLoc, "invalid opcode");
9210 Parser.eatToEndOfStatement();
9214 Opcodes.push_back(uint8_t(Opcode));
9216 if (getLexer().is(AsmToken::EndOfStatement))
9219 if (getLexer().isNot(AsmToken::Comma)) {
9220 Error(getLexer().getLoc(), "unexpected token in directive");
9221 Parser.eatToEndOfStatement();
9228 getTargetStreamer().emitUnwindRaw(StackOffset, Opcodes);
9234 /// parseDirectiveTLSDescSeq
9235 /// ::= .tlsdescseq tls-variable
9236 bool ARMAsmParser::parseDirectiveTLSDescSeq(SMLoc L) {
9237 if (getLexer().isNot(AsmToken::Identifier)) {
9238 TokError("expected variable after '.tlsdescseq' directive");
9239 Parser.eatToEndOfStatement();
9243 const MCSymbolRefExpr *SRE =
9244 MCSymbolRefExpr::Create(Parser.getTok().getIdentifier(),
9245 MCSymbolRefExpr::VK_ARM_TLSDESCSEQ, getContext());
9248 if (getLexer().isNot(AsmToken::EndOfStatement)) {
9249 Error(Parser.getTok().getLoc(), "unexpected token");
9250 Parser.eatToEndOfStatement();
9254 getTargetStreamer().AnnotateTLSDescriptorSequence(SRE);
9258 /// parseDirectiveMovSP
9259 /// ::= .movsp reg [, #offset]
9260 bool ARMAsmParser::parseDirectiveMovSP(SMLoc L) {
9261 if (!UC.hasFnStart()) {
9262 Parser.eatToEndOfStatement();
9263 Error(L, ".fnstart must precede .movsp directives");
9266 if (UC.getFPReg() != ARM::SP) {
9267 Parser.eatToEndOfStatement();
9268 Error(L, "unexpected .movsp directive");
9272 SMLoc SPRegLoc = Parser.getTok().getLoc();
9273 int SPReg = tryParseRegister();
9275 Parser.eatToEndOfStatement();
9276 Error(SPRegLoc, "register expected");
9280 if (SPReg == ARM::SP || SPReg == ARM::PC) {
9281 Parser.eatToEndOfStatement();
9282 Error(SPRegLoc, "sp and pc are not permitted in .movsp directive");
9287 if (Parser.getTok().is(AsmToken::Comma)) {
9290 if (Parser.getTok().isNot(AsmToken::Hash)) {
9291 Error(Parser.getTok().getLoc(), "expected #constant");
9292 Parser.eatToEndOfStatement();
9297 const MCExpr *OffsetExpr;
9298 SMLoc OffsetLoc = Parser.getTok().getLoc();
9299 if (Parser.parseExpression(OffsetExpr)) {
9300 Parser.eatToEndOfStatement();
9301 Error(OffsetLoc, "malformed offset expression");
9305 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(OffsetExpr);
9307 Parser.eatToEndOfStatement();
9308 Error(OffsetLoc, "offset must be an immediate constant");
9312 Offset = CE->getValue();
9315 getTargetStreamer().emitMovSP(SPReg, Offset);
9316 UC.saveFPReg(SPReg);
9321 /// parseDirectiveObjectArch
9322 /// ::= .object_arch name
9323 bool ARMAsmParser::parseDirectiveObjectArch(SMLoc L) {
9324 if (getLexer().isNot(AsmToken::Identifier)) {
9325 Error(getLexer().getLoc(), "unexpected token");
9326 Parser.eatToEndOfStatement();
9330 StringRef Arch = Parser.getTok().getString();
9331 SMLoc ArchLoc = Parser.getTok().getLoc();
9334 unsigned ID = StringSwitch<unsigned>(Arch)
9335 #define ARM_ARCH_NAME(NAME, ID, DEFAULT_CPU_NAME, DEFAULT_CPU_ARCH) \
9336 .Case(NAME, ARM::ID)
9337 #define ARM_ARCH_ALIAS(NAME, ID) \
9338 .Case(NAME, ARM::ID)
9339 #include "MCTargetDesc/ARMArchName.def"
9340 #undef ARM_ARCH_NAME
9341 #undef ARM_ARCH_ALIAS
9342 .Default(ARM::INVALID_ARCH);
9344 if (ID == ARM::INVALID_ARCH) {
9345 Error(ArchLoc, "unknown architecture '" + Arch + "'");
9346 Parser.eatToEndOfStatement();
9350 getTargetStreamer().emitObjectArch(ID);
9352 if (getLexer().isNot(AsmToken::EndOfStatement)) {
9353 Error(getLexer().getLoc(), "unexpected token");
9354 Parser.eatToEndOfStatement();
9360 /// parseDirectiveAlign
9362 bool ARMAsmParser::parseDirectiveAlign(SMLoc L) {
9363 // NOTE: if this is not the end of the statement, fall back to the target
9364 // agnostic handling for this directive which will correctly handle this.
9365 if (getLexer().isNot(AsmToken::EndOfStatement))
9368 // '.align' is target specifically handled to mean 2**2 byte alignment.
9369 if (getStreamer().getCurrentSection().first->UseCodeAlign())
9370 getStreamer().EmitCodeAlignment(4, 0);
9372 getStreamer().EmitValueToAlignment(4, 0, 1, 0);
9377 /// parseDirectiveThumbSet
9378 /// ::= .thumb_set name, value
9379 bool ARMAsmParser::parseDirectiveThumbSet(SMLoc L) {
9381 if (Parser.parseIdentifier(Name)) {
9382 TokError("expected identifier after '.thumb_set'");
9383 Parser.eatToEndOfStatement();
9387 if (getLexer().isNot(AsmToken::Comma)) {
9388 TokError("expected comma after name '" + Name + "'");
9389 Parser.eatToEndOfStatement();
9394 const MCExpr *Value;
9395 if (Parser.parseExpression(Value)) {
9396 TokError("missing expression");
9397 Parser.eatToEndOfStatement();
9401 if (getLexer().isNot(AsmToken::EndOfStatement)) {
9402 TokError("unexpected token");
9403 Parser.eatToEndOfStatement();
9408 MCSymbol *Alias = getContext().GetOrCreateSymbol(Name);
9409 getTargetStreamer().emitThumbSet(Alias, Value);
9413 /// Force static initialization.
9414 extern "C" void LLVMInitializeARMAsmParser() {
9415 RegisterMCAsmParser<ARMAsmParser> X(TheARMLETarget);
9416 RegisterMCAsmParser<ARMAsmParser> Y(TheARMBETarget);
9417 RegisterMCAsmParser<ARMAsmParser> A(TheThumbLETarget);
9418 RegisterMCAsmParser<ARMAsmParser> B(TheThumbBETarget);
9421 #define GET_REGISTER_MATCHER
9422 #define GET_SUBTARGET_FEATURE_NAME
9423 #define GET_MATCHER_IMPLEMENTATION
9424 #include "ARMGenAsmMatcher.inc"
9426 static const struct ExtMapEntry {
9427 const char *Extension;
9428 const unsigned ArchCheck;
9429 const uint64_t Features;
9431 { "crc", Feature_HasV8, ARM::FeatureCRC },
9432 { "crypto", Feature_HasV8,
9433 ARM::FeatureCrypto | ARM::FeatureNEON | ARM::FeatureFPARMv8 },
9434 { "fp", Feature_HasV8, ARM::FeatureFPARMv8 },
9435 { "idiv", Feature_HasV7 | Feature_IsNotMClass,
9436 ARM::FeatureHWDiv | ARM::FeatureHWDivARM },
9437 // FIXME: iWMMXT not supported
9438 { "iwmmxt", Feature_None, 0 },
9439 // FIXME: iWMMXT2 not supported
9440 { "iwmmxt2", Feature_None, 0 },
9441 // FIXME: Maverick not supported
9442 { "maverick", Feature_None, 0 },
9443 { "mp", Feature_HasV7 | Feature_IsNotMClass, ARM::FeatureMP },
9444 // FIXME: ARMv6-m OS Extensions feature not checked
9445 { "os", Feature_None, 0 },
9446 // FIXME: Also available in ARMv6-K
9447 { "sec", Feature_HasV7, ARM::FeatureTrustZone },
9448 { "simd", Feature_HasV8, ARM::FeatureNEON | ARM::FeatureFPARMv8 },
9449 // FIXME: Only available in A-class, isel not predicated
9450 { "virt", Feature_HasV7, ARM::FeatureVirtualization },
9451 // FIXME: xscale not supported
9452 { "xscale", Feature_None, 0 },
9455 /// parseDirectiveArchExtension
9456 /// ::= .arch_extension [no]feature
9457 bool ARMAsmParser::parseDirectiveArchExtension(SMLoc L) {
9458 if (getLexer().isNot(AsmToken::Identifier)) {
9459 Error(getLexer().getLoc(), "unexpected token");
9460 Parser.eatToEndOfStatement();
9464 StringRef Extension = Parser.getTok().getString();
9465 SMLoc ExtLoc = Parser.getTok().getLoc();
9468 bool EnableFeature = true;
9469 if (Extension.startswith_lower("no")) {
9470 EnableFeature = false;
9471 Extension = Extension.substr(2);
9474 for (unsigned EI = 0, EE = array_lengthof(Extensions); EI != EE; ++EI) {
9475 if (Extensions[EI].Extension != Extension)
9478 unsigned FB = getAvailableFeatures();
9479 if ((FB & Extensions[EI].ArchCheck) != Extensions[EI].ArchCheck) {
9480 Error(ExtLoc, "architectural extension '" + Extension + "' is not "
9481 "allowed for the current base architecture");
9485 if (!Extensions[EI].Features)
9486 report_fatal_error("unsupported architectural extension: " + Extension);
9489 FB |= ComputeAvailableFeatures(Extensions[EI].Features);
9491 FB &= ~ComputeAvailableFeatures(Extensions[EI].Features);
9493 setAvailableFeatures(FB);
9497 Error(ExtLoc, "unknown architectural extension: " + Extension);
9498 Parser.eatToEndOfStatement();
9502 // Define this matcher function after the auto-generated include so we
9503 // have the match class enum definitions.
9504 unsigned ARMAsmParser::validateTargetOperandClass(MCParsedAsmOperand &AsmOp,
9506 ARMOperand &Op = static_cast<ARMOperand &>(AsmOp);
9507 // If the kind is a token for a literal immediate, check if our asm
9508 // operand matches. This is for InstAliases which have a fixed-value
9509 // immediate in the syntax.
9514 if (const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(Op.getImm()))
9515 if (CE->getValue() == 0)
9516 return Match_Success;
9520 const MCExpr *SOExpr = Op.getImm();
9522 if (!SOExpr->EvaluateAsAbsolute(Value))
9523 return Match_Success;
9524 assert((Value >= INT32_MIN && Value <= UINT32_MAX) &&
9525 "expression value must be representable in 32 bits");
9530 MRI->getRegClass(ARM::GPRRegClassID).contains(Op.getReg()))
9531 return Match_Success;
9534 return Match_InvalidOperand;