1 //===-- X86BaseInfo.h - Top level definitions for X86 -------- --*- C++ -*-===//
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 // This file contains small standalone helper functions and enum definitions for
11 // the X86 target useful for the compiler back-end and the MC libraries.
12 // As such, it deliberately does not include references to LLVM core
13 // code gen types, passes, etc..
15 //===----------------------------------------------------------------------===//
17 #ifndef LLVM_LIB_TARGET_X86_MCTARGETDESC_X86BASEINFO_H
18 #define LLVM_LIB_TARGET_X86_MCTARGETDESC_X86BASEINFO_H
20 #include "X86MCTargetDesc.h"
21 #include "llvm/MC/MCInstrDesc.h"
22 #include "llvm/Support/DataTypes.h"
23 #include "llvm/Support/ErrorHandling.h"
28 // Enums for memory operand decoding. Each memory operand is represented with
29 // a 5 operand sequence in the form:
30 // [BaseReg, ScaleAmt, IndexReg, Disp, Segment]
31 // These enums help decode this.
38 /// AddrSegmentReg - The operand # of the segment in the memory operand.
41 /// AddrNumOperands - Total number of operands in a memory reference.
45 /// AVX512 static rounding constants. These need to match the values in
47 enum STATIC_ROUNDING {
55 /// The constants to describe instr prefixes if there are
63 NO_SCHED_INFO = 32 // Don't add sched comment to the current instr because
64 // it was already added
66 } // end namespace X86;
68 /// X86II - This namespace holds all of the target specific flags that
69 /// instruction info tracks.
72 /// Target Operand Flag enum.
74 //===------------------------------------------------------------------===//
75 // X86 Specific MachineOperand flags.
79 /// MO_GOT_ABSOLUTE_ADDRESS - On a symbol operand, this represents a
81 /// SYMBOL_LABEL + [. - PICBASELABEL]
82 MO_GOT_ABSOLUTE_ADDRESS,
84 /// MO_PIC_BASE_OFFSET - On a symbol operand this indicates that the
85 /// immediate should get the value of the symbol minus the PIC base label:
86 /// SYMBOL_LABEL - PICBASELABEL
89 /// MO_GOT - On a symbol operand this indicates that the immediate is the
90 /// offset to the GOT entry for the symbol name from the base of the GOT.
92 /// See the X86-64 ELF ABI supplement for more details.
96 /// MO_GOTOFF - On a symbol operand this indicates that the immediate is
97 /// the offset to the location of the symbol name from the base of the GOT.
99 /// See the X86-64 ELF ABI supplement for more details.
100 /// SYMBOL_LABEL @GOTOFF
103 /// MO_GOTPCREL - On a symbol operand this indicates that the immediate is
104 /// offset to the GOT entry for the symbol name from the current code
107 /// See the X86-64 ELF ABI supplement for more details.
108 /// SYMBOL_LABEL @GOTPCREL
111 /// MO_PLT - On a symbol operand this indicates that the immediate is
112 /// offset to the PLT entry of symbol name from the current code location.
114 /// See the X86-64 ELF ABI supplement for more details.
115 /// SYMBOL_LABEL @PLT
118 /// MO_TLSGD - On a symbol operand this indicates that the immediate is
119 /// the offset of the GOT entry with the TLS index structure that contains
120 /// the module number and variable offset for the symbol. Used in the
121 /// general dynamic TLS access model.
123 /// See 'ELF Handling for Thread-Local Storage' for more details.
124 /// SYMBOL_LABEL @TLSGD
127 /// MO_TLSLD - On a symbol operand this indicates that the immediate is
128 /// the offset of the GOT entry with the TLS index for the module that
129 /// contains the symbol. When this index is passed to a call to
130 /// __tls_get_addr, the function will return the base address of the TLS
131 /// block for the symbol. Used in the x86-64 local dynamic TLS access model.
133 /// See 'ELF Handling for Thread-Local Storage' for more details.
134 /// SYMBOL_LABEL @TLSLD
137 /// MO_TLSLDM - On a symbol operand this indicates that the immediate is
138 /// the offset of the GOT entry with the TLS index for the module that
139 /// contains the symbol. When this index is passed to a call to
140 /// ___tls_get_addr, the function will return the base address of the TLS
141 /// block for the symbol. Used in the IA32 local dynamic TLS access model.
143 /// See 'ELF Handling for Thread-Local Storage' for more details.
144 /// SYMBOL_LABEL @TLSLDM
147 /// MO_GOTTPOFF - On a symbol operand this indicates that the immediate is
148 /// the offset of the GOT entry with the thread-pointer offset for the
149 /// symbol. Used in the x86-64 initial exec TLS access model.
151 /// See 'ELF Handling for Thread-Local Storage' for more details.
152 /// SYMBOL_LABEL @GOTTPOFF
155 /// MO_INDNTPOFF - On a symbol operand this indicates that the immediate is
156 /// the absolute address of the GOT entry with the negative thread-pointer
157 /// offset for the symbol. Used in the non-PIC IA32 initial exec TLS access
160 /// See 'ELF Handling for Thread-Local Storage' for more details.
161 /// SYMBOL_LABEL @INDNTPOFF
164 /// MO_TPOFF - On a symbol operand this indicates that the immediate is
165 /// the thread-pointer offset for the symbol. Used in the x86-64 local
166 /// exec TLS access model.
168 /// See 'ELF Handling for Thread-Local Storage' for more details.
169 /// SYMBOL_LABEL @TPOFF
172 /// MO_DTPOFF - On a symbol operand this indicates that the immediate is
173 /// the offset of the GOT entry with the TLS offset of the symbol. Used
174 /// in the local dynamic TLS access model.
176 /// See 'ELF Handling for Thread-Local Storage' for more details.
177 /// SYMBOL_LABEL @DTPOFF
180 /// MO_NTPOFF - On a symbol operand this indicates that the immediate is
181 /// the negative thread-pointer offset for the symbol. Used in the IA32
182 /// local exec TLS access model.
184 /// See 'ELF Handling for Thread-Local Storage' for more details.
185 /// SYMBOL_LABEL @NTPOFF
188 /// MO_GOTNTPOFF - On a symbol operand this indicates that the immediate is
189 /// the offset of the GOT entry with the negative thread-pointer offset for
190 /// the symbol. Used in the PIC IA32 initial exec TLS access model.
192 /// See 'ELF Handling for Thread-Local Storage' for more details.
193 /// SYMBOL_LABEL @GOTNTPOFF
196 /// MO_DLLIMPORT - On a symbol operand "FOO", this indicates that the
197 /// reference is actually to the "__imp_FOO" symbol. This is used for
198 /// dllimport linkage on windows.
201 /// MO_DARWIN_NONLAZY - On a symbol operand "FOO", this indicates that the
202 /// reference is actually to the "FOO$non_lazy_ptr" symbol, which is a
203 /// non-PIC-base-relative reference to a non-hidden dyld lazy pointer stub.
206 /// MO_DARWIN_NONLAZY_PIC_BASE - On a symbol operand "FOO", this indicates
207 /// that the reference is actually to "FOO$non_lazy_ptr - PICBASE", which is
208 /// a PIC-base-relative reference to a non-hidden dyld lazy pointer stub.
209 MO_DARWIN_NONLAZY_PIC_BASE,
211 /// MO_TLVP - On a symbol operand this indicates that the immediate is
214 /// This is the TLS offset for the Darwin TLS mechanism.
217 /// MO_TLVP_PIC_BASE - On a symbol operand this indicates that the immediate
218 /// is some TLS offset from the picbase.
220 /// This is the 32-bit TLS offset for Darwin TLS in PIC mode.
223 /// MO_SECREL - On a symbol operand this indicates that the immediate is
224 /// the offset from beginning of section.
226 /// This is the TLS offset for the COFF/Windows TLS mechanism.
229 /// MO_ABS8 - On a symbol operand this indicates that the symbol is known
230 /// to be an absolute symbol in range [0,128), so we can use the @ABS8
236 //===------------------------------------------------------------------===//
237 // Instruction encodings. These are the standard/most common forms for X86
241 // PseudoFrm - This represents an instruction that is a pseudo instruction
242 // or one that has not been implemented yet. It is illegal to code generate
243 // it, but tolerated for intermediate implementation stages.
246 /// Raw - This form is for instructions that don't have any operands, so
247 /// they are just a fixed opcode value, like 'leave'.
250 /// AddRegFrm - This form is used for instructions like 'push r32' that have
251 /// their one register operand added to their opcode.
254 /// RawFrmMemOffs - This form is for instructions that store an absolute
255 /// memory offset as an immediate with a possible segment override.
258 /// RawFrmSrc - This form is for instructions that use the source index
259 /// register SI/ESI/RSI with a possible segment override.
262 /// RawFrmDst - This form is for instructions that use the destination index
263 /// register DI/EDI/ESI.
266 /// RawFrmSrc - This form is for instructions that use the source index
267 /// register SI/ESI/ERI with a possible segment override, and also the
268 /// destination index register DI/ESI/RDI.
271 /// RawFrmImm8 - This is used for the ENTER instruction, which has two
272 /// immediates, the first of which is a 16-bit immediate (specified by
273 /// the imm encoding) and the second is a 8-bit fixed value.
276 /// RawFrmImm16 - This is used for CALL FAR instructions, which have two
277 /// immediates, the first of which is a 16 or 32-bit immediate (specified by
278 /// the imm encoding) and the second is a 16-bit fixed value. In the AMD
279 /// manual, this operand is described as pntr16:32 and pntr16:16
282 /// MRM[0-7][rm] - These forms are used to represent instructions that use
283 /// a Mod/RM byte, and use the middle field to hold extended opcode
284 /// information. In the intel manual these are represented as /0, /1, ...
287 /// MRMDestMem - This form is used for instructions that use the Mod/RM byte
288 /// to specify a destination, which in this case is memory.
292 /// MRMSrcMem - This form is used for instructions that use the Mod/RM byte
293 /// to specify a source, which in this case is memory.
297 /// MRMSrcMem4VOp3 - This form is used for instructions that encode
298 /// operand 3 with VEX.VVVV and load from memory.
302 /// MRMSrcMemOp4 - This form is used for instructions that use the Mod/RM
303 /// byte to specify the fourth source, which in this case is memory.
307 /// MRMXm - This form is used for instructions that use the Mod/RM byte
308 /// to specify a memory source, but doesn't use the middle field.
310 MRMXm = 39, // Instruction that uses Mod/RM but not the middle field.
312 // Next, instructions that operate on a memory r/m operand...
313 MRM0m = 40, MRM1m = 41, MRM2m = 42, MRM3m = 43, // Format /0 /1 /2 /3
314 MRM4m = 44, MRM5m = 45, MRM6m = 46, MRM7m = 47, // Format /4 /5 /6 /7
316 /// MRMDestReg - This form is used for instructions that use the Mod/RM byte
317 /// to specify a destination, which in this case is a register.
321 /// MRMSrcReg - This form is used for instructions that use the Mod/RM byte
322 /// to specify a source, which in this case is a register.
326 /// MRMSrcReg4VOp3 - This form is used for instructions that encode
327 /// operand 3 with VEX.VVVV and do not load from memory.
331 /// MRMSrcRegOp4 - This form is used for instructions that use the Mod/RM
332 /// byte to specify the fourth source, which in this case is a register.
336 /// MRMXr - This form is used for instructions that use the Mod/RM byte
337 /// to specify a register source, but doesn't use the middle field.
339 MRMXr = 55, // Instruction that uses Mod/RM but not the middle field.
341 // Instructions that operate on a register r/m operand...
342 MRM0r = 56, MRM1r = 57, MRM2r = 58, MRM3r = 59, // Format /0 /1 /2 /3
343 MRM4r = 60, MRM5r = 61, MRM6r = 62, MRM7r = 63, // Format /4 /5 /6 /7
345 /// MRM_XX - A mod/rm byte of exactly 0xXX.
346 MRM_C0 = 64, MRM_C1 = 65, MRM_C2 = 66, MRM_C3 = 67,
347 MRM_C4 = 68, MRM_C5 = 69, MRM_C6 = 70, MRM_C7 = 71,
348 MRM_C8 = 72, MRM_C9 = 73, MRM_CA = 74, MRM_CB = 75,
349 MRM_CC = 76, MRM_CD = 77, MRM_CE = 78, MRM_CF = 79,
350 MRM_D0 = 80, MRM_D1 = 81, MRM_D2 = 82, MRM_D3 = 83,
351 MRM_D4 = 84, MRM_D5 = 85, MRM_D6 = 86, MRM_D7 = 87,
352 MRM_D8 = 88, MRM_D9 = 89, MRM_DA = 90, MRM_DB = 91,
353 MRM_DC = 92, MRM_DD = 93, MRM_DE = 94, MRM_DF = 95,
354 MRM_E0 = 96, MRM_E1 = 97, MRM_E2 = 98, MRM_E3 = 99,
355 MRM_E4 = 100, MRM_E5 = 101, MRM_E6 = 102, MRM_E7 = 103,
356 MRM_E8 = 104, MRM_E9 = 105, MRM_EA = 106, MRM_EB = 107,
357 MRM_EC = 108, MRM_ED = 109, MRM_EE = 110, MRM_EF = 111,
358 MRM_F0 = 112, MRM_F1 = 113, MRM_F2 = 114, MRM_F3 = 115,
359 MRM_F4 = 116, MRM_F5 = 117, MRM_F6 = 118, MRM_F7 = 119,
360 MRM_F8 = 120, MRM_F9 = 121, MRM_FA = 122, MRM_FB = 123,
361 MRM_FC = 124, MRM_FD = 125, MRM_FE = 126, MRM_FF = 127,
365 //===------------------------------------------------------------------===//
368 // OpSize - OpSizeFixed implies instruction never needs a 0x66 prefix.
369 // OpSize16 means this is a 16-bit instruction and needs 0x66 prefix in
370 // 32-bit mode. OpSize32 means this is a 32-bit instruction needs a 0x66
371 // prefix in 16-bit mode. OpSizeIgnore means that the instruction may
372 // take a optional 0x66 byte but should not emit with one.
374 OpSizeMask = 0x3 << OpSizeShift,
376 OpSizeFixed = 0 << OpSizeShift,
377 OpSize16 = 1 << OpSizeShift,
378 OpSize32 = 2 << OpSizeShift,
379 OpSizeIgnore = 3 << OpSizeShift,
381 // AsSize - AdSizeX implies this instruction determines its need of 0x67
382 // prefix from a normal ModRM memory operand. The other types indicate that
383 // an operand is encoded with a specific width and a prefix is needed if
384 // it differs from the current mode.
385 AdSizeShift = OpSizeShift + 2,
386 AdSizeMask = 0x3 << AdSizeShift,
388 AdSizeX = 1 << AdSizeShift,
389 AdSize16 = 1 << AdSizeShift,
390 AdSize32 = 2 << AdSizeShift,
391 AdSize64 = 3 << AdSizeShift,
393 //===------------------------------------------------------------------===//
394 // OpPrefix - There are several prefix bytes that are used as opcode
395 // extensions. These are 0x66, 0xF3, and 0xF2. If this field is 0 there is
398 OpPrefixShift = AdSizeShift + 2,
399 OpPrefixMask = 0x7 << OpPrefixShift,
401 // PS, PD - Prefix code for packed single and double precision vector
402 // floating point operations performed in the SSE registers.
403 PS = 1 << OpPrefixShift, PD = 2 << OpPrefixShift,
405 // XS, XD - These prefix codes are for single and double precision scalar
406 // floating point operations performed in the SSE registers.
407 XS = 3 << OpPrefixShift, XD = 4 << OpPrefixShift,
409 //===------------------------------------------------------------------===//
410 // OpMap - This field determines which opcode map this instruction
411 // belongs to. i.e. one-byte, two-byte, 0x0f 0x38, 0x0f 0x3a, etc.
413 OpMapShift = OpPrefixShift + 3,
414 OpMapMask = 0x7 << OpMapShift,
416 // OB - OneByte - Set if this instruction has a one byte opcode.
417 OB = 0 << OpMapShift,
419 // TB - TwoByte - Set if this instruction has a two byte opcode, which
420 // starts with a 0x0F byte before the real opcode.
421 TB = 1 << OpMapShift,
423 // T8, TA - Prefix after the 0x0F prefix.
424 T8 = 2 << OpMapShift, TA = 3 << OpMapShift,
426 // XOP8 - Prefix to include use of imm byte.
427 XOP8 = 4 << OpMapShift,
429 // XOP9 - Prefix to exclude use of imm byte.
430 XOP9 = 5 << OpMapShift,
432 // XOPA - Prefix to encode 0xA in VEX.MMMM of XOP instructions.
433 XOPA = 6 << OpMapShift,
435 //===------------------------------------------------------------------===//
436 // REX_W - REX prefixes are instruction prefixes used in 64-bit mode.
437 // They are used to specify GPRs and SSE registers, 64-bit operand size,
438 // etc. We only cares about REX.W and REX.R bits and only the former is
439 // statically determined.
441 REXShift = OpMapShift + 3,
442 REX_W = 1 << REXShift,
444 //===------------------------------------------------------------------===//
445 // This three-bit field describes the size of an immediate operand. Zero is
446 // unused so that we can tell if we forgot to set a value.
447 ImmShift = REXShift + 1,
448 ImmMask = 15 << ImmShift,
449 Imm8 = 1 << ImmShift,
450 Imm8PCRel = 2 << ImmShift,
451 Imm8Reg = 3 << ImmShift,
452 Imm16 = 4 << ImmShift,
453 Imm16PCRel = 5 << ImmShift,
454 Imm32 = 6 << ImmShift,
455 Imm32PCRel = 7 << ImmShift,
456 Imm32S = 8 << ImmShift,
457 Imm64 = 9 << ImmShift,
459 //===------------------------------------------------------------------===//
460 // FP Instruction Classification... Zero is non-fp instruction.
462 // FPTypeMask - Mask for all of the FP types...
463 FPTypeShift = ImmShift + 4,
464 FPTypeMask = 7 << FPTypeShift,
466 // NotFP - The default, set for instructions that do not use FP registers.
467 NotFP = 0 << FPTypeShift,
469 // ZeroArgFP - 0 arg FP instruction which implicitly pushes ST(0), f.e. fld0
470 ZeroArgFP = 1 << FPTypeShift,
472 // OneArgFP - 1 arg FP instructions which implicitly read ST(0), such as fst
473 OneArgFP = 2 << FPTypeShift,
475 // OneArgFPRW - 1 arg FP instruction which implicitly read ST(0) and write a
476 // result back to ST(0). For example, fcos, fsqrt, etc.
478 OneArgFPRW = 3 << FPTypeShift,
480 // TwoArgFP - 2 arg FP instructions which implicitly read ST(0), and an
481 // explicit argument, storing the result to either ST(0) or the implicit
482 // argument. For example: fadd, fsub, fmul, etc...
483 TwoArgFP = 4 << FPTypeShift,
485 // CompareFP - 2 arg FP instructions which implicitly read ST(0) and an
486 // explicit argument, but have no destination. Example: fucom, fucomi, ...
487 CompareFP = 5 << FPTypeShift,
489 // CondMovFP - "2 operand" floating point conditional move instructions.
490 CondMovFP = 6 << FPTypeShift,
492 // SpecialFP - Special instruction forms. Dispatch by opcode explicitly.
493 SpecialFP = 7 << FPTypeShift,
496 LOCKShift = FPTypeShift + 3,
497 LOCK = 1 << LOCKShift,
500 REPShift = LOCKShift + 1,
503 // Execution domain for SSE instructions.
504 // 0 means normal, non-SSE instruction.
505 SSEDomainShift = REPShift + 1,
508 EncodingShift = SSEDomainShift + 2,
509 EncodingMask = 0x3 << EncodingShift,
511 // VEX - encoding using 0xC4/0xC5
512 VEX = 1 << EncodingShift,
514 /// XOP - Opcode prefix used by XOP instructions.
515 XOP = 2 << EncodingShift,
517 // VEX_EVEX - Specifies that this instruction use EVEX form which provides
518 // syntax support up to 32 512-bit register operands and up to 7 16-bit
519 // mask operands as well as source operand data swizzling/memory operand
520 // conversion, eviction hint, and rounding mode.
521 EVEX = 3 << EncodingShift,
524 OpcodeShift = EncodingShift + 2,
526 /// VEX_W - Has a opcode specific functionality, but is used in the same
527 /// way as REX_W is for regular SSE instructions.
528 VEX_WShift = OpcodeShift + 8,
529 VEX_W = 1ULL << VEX_WShift,
531 /// VEX_4V - Used to specify an additional AVX/SSE register. Several 2
532 /// address instructions in SSE are represented as 3 address ones in AVX
533 /// and the additional register is encoded in VEX_VVVV prefix.
534 VEX_4VShift = VEX_WShift + 1,
535 VEX_4V = 1ULL << VEX_4VShift,
537 /// VEX_L - Stands for a bit in the VEX opcode prefix meaning the current
538 /// instruction uses 256-bit wide registers. This is usually auto detected
539 /// if a VR256 register is used, but some AVX instructions also have this
540 /// field marked when using a f256 memory references.
541 VEX_LShift = VEX_4VShift + 1,
542 VEX_L = 1ULL << VEX_LShift,
544 // EVEX_K - Set if this instruction requires masking
545 EVEX_KShift = VEX_LShift + 1,
546 EVEX_K = 1ULL << EVEX_KShift,
548 // EVEX_Z - Set if this instruction has EVEX.Z field set.
549 EVEX_ZShift = EVEX_KShift + 1,
550 EVEX_Z = 1ULL << EVEX_ZShift,
552 // EVEX_L2 - Set if this instruction has EVEX.L' field set.
553 EVEX_L2Shift = EVEX_ZShift + 1,
554 EVEX_L2 = 1ULL << EVEX_L2Shift,
556 // EVEX_B - Set if this instruction has EVEX.B field set.
557 EVEX_BShift = EVEX_L2Shift + 1,
558 EVEX_B = 1ULL << EVEX_BShift,
560 // The scaling factor for the AVX512's 8-bit compressed displacement.
561 CD8_Scale_Shift = EVEX_BShift + 1,
562 CD8_Scale_Mask = 127ULL << CD8_Scale_Shift,
564 /// Has3DNow0F0FOpcode - This flag indicates that the instruction uses the
565 /// wacky 0x0F 0x0F prefix for 3DNow! instructions. The manual documents
566 /// this as having a 0x0F prefix with a 0x0F opcode, and each instruction
567 /// storing a classifier in the imm8 field. To simplify our implementation,
568 /// we handle this by storeing the classifier in the opcode field and using
569 /// this flag to indicate that the encoder should do the wacky 3DNow! thing.
570 Has3DNow0F0FOpcodeShift = CD8_Scale_Shift + 7,
571 Has3DNow0F0FOpcode = 1ULL << Has3DNow0F0FOpcodeShift,
573 /// Explicitly specified rounding control
574 EVEX_RCShift = Has3DNow0F0FOpcodeShift + 1,
575 EVEX_RC = 1ULL << EVEX_RCShift
578 // getBaseOpcodeFor - This function returns the "base" X86 opcode for the
579 // specified machine instruction.
581 inline unsigned char getBaseOpcodeFor(uint64_t TSFlags) {
582 return TSFlags >> X86II::OpcodeShift;
585 inline bool hasImm(uint64_t TSFlags) {
586 return (TSFlags & X86II::ImmMask) != 0;
589 /// getSizeOfImm - Decode the "size of immediate" field from the TSFlags field
590 /// of the specified instruction.
591 inline unsigned getSizeOfImm(uint64_t TSFlags) {
592 switch (TSFlags & X86II::ImmMask) {
593 default: llvm_unreachable("Unknown immediate size");
595 case X86II::Imm8PCRel:
596 case X86II::Imm8Reg: return 1;
598 case X86II::Imm16PCRel: return 2;
601 case X86II::Imm32PCRel: return 4;
602 case X86II::Imm64: return 8;
606 /// isImmPCRel - Return true if the immediate of the specified instruction's
607 /// TSFlags indicates that it is pc relative.
608 inline unsigned isImmPCRel(uint64_t TSFlags) {
609 switch (TSFlags & X86II::ImmMask) {
610 default: llvm_unreachable("Unknown immediate size");
611 case X86II::Imm8PCRel:
612 case X86II::Imm16PCRel:
613 case X86II::Imm32PCRel:
625 /// isImmSigned - Return true if the immediate of the specified instruction's
626 /// TSFlags indicates that it is signed.
627 inline unsigned isImmSigned(uint64_t TSFlags) {
628 switch (TSFlags & X86II::ImmMask) {
629 default: llvm_unreachable("Unknown immediate signedness");
633 case X86II::Imm8PCRel:
636 case X86II::Imm16PCRel:
638 case X86II::Imm32PCRel:
644 /// getOperandBias - compute any additional adjustment needed to
645 /// the offset to the start of the memory operand
646 /// in this instruction.
647 /// If this is a two-address instruction,skip one of the register operands.
648 /// FIXME: This should be handled during MCInst lowering.
649 inline unsigned getOperandBias(const MCInstrDesc& Desc)
651 unsigned NumOps = Desc.getNumOperands();
652 if (NumOps > 1 && Desc.getOperandConstraint(1, MCOI::TIED_TO) == 0)
654 if (NumOps > 3 && Desc.getOperandConstraint(2, MCOI::TIED_TO) == 0 &&
655 Desc.getOperandConstraint(3, MCOI::TIED_TO) == 1)
656 // Special case for AVX-512 GATHER with 2 TIED_TO operands
657 // Skip the first 2 operands: dst, mask_wb
659 if (NumOps > 3 && Desc.getOperandConstraint(2, MCOI::TIED_TO) == 0 &&
660 Desc.getOperandConstraint(NumOps - 1, MCOI::TIED_TO) == 1)
661 // Special case for GATHER with 2 TIED_TO operands
662 // Skip the first 2 operands: dst, mask_wb
664 if (NumOps > 2 && Desc.getOperandConstraint(NumOps - 2, MCOI::TIED_TO) == 0)
670 /// getMemoryOperandNo - The function returns the MCInst operand # for the
671 /// first field of the memory operand. If the instruction doesn't have a
672 /// memory operand, this returns -1.
674 /// Note that this ignores tied operands. If there is a tied register which
675 /// is duplicated in the MCInst (e.g. "EAX = addl EAX, [mem]") it is only
676 /// counted as one operand.
678 inline int getMemoryOperandNo(uint64_t TSFlags) {
679 bool HasVEX_4V = TSFlags & X86II::VEX_4V;
680 bool HasEVEX_K = TSFlags & X86II::EVEX_K;
682 switch (TSFlags & X86II::FormMask) {
683 default: llvm_unreachable("Unknown FormMask value in getMemoryOperandNo!");
686 case X86II::AddRegFrm:
687 case X86II::RawFrmImm8:
688 case X86II::RawFrmImm16:
689 case X86II::RawFrmMemOffs:
690 case X86II::RawFrmSrc:
691 case X86II::RawFrmDst:
692 case X86II::RawFrmDstSrc:
694 case X86II::MRMDestMem:
696 case X86II::MRMSrcMem:
697 // Start from 1, skip any registers encoded in VEX_VVVV or I8IMM, or a
699 return 1 + HasVEX_4V + HasEVEX_K;
700 case X86II::MRMSrcMem4VOp3:
701 // Skip registers encoded in reg.
702 return 1 + HasEVEX_K;
703 case X86II::MRMSrcMemOp4:
704 // Skip registers encoded in reg, VEX_VVVV, and I8IMM.
706 case X86II::MRMDestReg:
707 case X86II::MRMSrcReg:
708 case X86II::MRMSrcReg4VOp3:
709 case X86II::MRMSrcRegOp4:
711 case X86II::MRM0r: case X86II::MRM1r:
712 case X86II::MRM2r: case X86II::MRM3r:
713 case X86II::MRM4r: case X86II::MRM5r:
714 case X86II::MRM6r: case X86II::MRM7r:
717 case X86II::MRM0m: case X86II::MRM1m:
718 case X86II::MRM2m: case X86II::MRM3m:
719 case X86II::MRM4m: case X86II::MRM5m:
720 case X86II::MRM6m: case X86II::MRM7m:
721 // Start from 0, skip registers encoded in VEX_VVVV or a mask register.
722 return 0 + HasVEX_4V + HasEVEX_K;
723 case X86II::MRM_C0: case X86II::MRM_C1: case X86II::MRM_C2:
724 case X86II::MRM_C3: case X86II::MRM_C4: case X86II::MRM_C5:
725 case X86II::MRM_C6: case X86II::MRM_C7: case X86II::MRM_C8:
726 case X86II::MRM_C9: case X86II::MRM_CA: case X86II::MRM_CB:
727 case X86II::MRM_CC: case X86II::MRM_CD: case X86II::MRM_CE:
728 case X86II::MRM_CF: case X86II::MRM_D0: case X86II::MRM_D1:
729 case X86II::MRM_D2: case X86II::MRM_D3: case X86II::MRM_D4:
730 case X86II::MRM_D5: case X86II::MRM_D6: case X86II::MRM_D7:
731 case X86II::MRM_D8: case X86II::MRM_D9: case X86II::MRM_DA:
732 case X86II::MRM_DB: case X86II::MRM_DC: case X86II::MRM_DD:
733 case X86II::MRM_DE: case X86II::MRM_DF: case X86II::MRM_E0:
734 case X86II::MRM_E1: case X86II::MRM_E2: case X86II::MRM_E3:
735 case X86II::MRM_E4: case X86II::MRM_E5: case X86II::MRM_E6:
736 case X86II::MRM_E7: case X86II::MRM_E8: case X86II::MRM_E9:
737 case X86II::MRM_EA: case X86II::MRM_EB: case X86II::MRM_EC:
738 case X86II::MRM_ED: case X86II::MRM_EE: case X86II::MRM_EF:
739 case X86II::MRM_F0: case X86II::MRM_F1: case X86II::MRM_F2:
740 case X86II::MRM_F3: case X86II::MRM_F4: case X86II::MRM_F5:
741 case X86II::MRM_F6: case X86II::MRM_F7: case X86II::MRM_F8:
742 case X86II::MRM_F9: case X86II::MRM_FA: case X86II::MRM_FB:
743 case X86II::MRM_FC: case X86II::MRM_FD: case X86II::MRM_FE:
749 /// isX86_64ExtendedReg - Is the MachineOperand a x86-64 extended (r8 or
750 /// higher) register? e.g. r8, xmm8, xmm13, etc.
751 inline bool isX86_64ExtendedReg(unsigned RegNo) {
752 if ((RegNo >= X86::XMM8 && RegNo <= X86::XMM31) ||
753 (RegNo >= X86::YMM8 && RegNo <= X86::YMM31) ||
754 (RegNo >= X86::ZMM8 && RegNo <= X86::ZMM31))
759 case X86::R8: case X86::R9: case X86::R10: case X86::R11:
760 case X86::R12: case X86::R13: case X86::R14: case X86::R15:
761 case X86::R8D: case X86::R9D: case X86::R10D: case X86::R11D:
762 case X86::R12D: case X86::R13D: case X86::R14D: case X86::R15D:
763 case X86::R8W: case X86::R9W: case X86::R10W: case X86::R11W:
764 case X86::R12W: case X86::R13W: case X86::R14W: case X86::R15W:
765 case X86::R8B: case X86::R9B: case X86::R10B: case X86::R11B:
766 case X86::R12B: case X86::R13B: case X86::R14B: case X86::R15B:
767 case X86::CR8: case X86::CR9: case X86::CR10: case X86::CR11:
768 case X86::CR12: case X86::CR13: case X86::CR14: case X86::CR15:
769 case X86::DR8: case X86::DR9: case X86::DR10: case X86::DR11:
770 case X86::DR12: case X86::DR13: case X86::DR14: case X86::DR15:
776 /// is32ExtendedReg - Is the MemoryOperand a 32 extended (zmm16 or higher)
777 /// registers? e.g. zmm21, etc.
778 static inline bool is32ExtendedReg(unsigned RegNo) {
779 return ((RegNo >= X86::XMM16 && RegNo <= X86::XMM31) ||
780 (RegNo >= X86::YMM16 && RegNo <= X86::YMM31) ||
781 (RegNo >= X86::ZMM16 && RegNo <= X86::ZMM31));
785 inline bool isX86_64NonExtLowByteReg(unsigned reg) {
786 return (reg == X86::SPL || reg == X86::BPL ||
787 reg == X86::SIL || reg == X86::DIL);
790 /// isKMasked - Is this a masked instruction.
791 inline bool isKMasked(uint64_t TSFlags) {
792 return (TSFlags & X86II::EVEX_K) != 0;
795 /// isKMergedMasked - Is this a merge masked instruction.
796 inline bool isKMergeMasked(uint64_t TSFlags) {
797 return isKMasked(TSFlags) && (TSFlags & X86II::EVEX_Z) == 0;
801 } // end namespace llvm;