1 //===-- X86InstrInfo.td - Main X86 Instruction Definition --*- tablegen -*-===//
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 describes the X86 instruction set, defining the instructions, and
11 // properties of the instructions which are needed for code generation, machine
12 // code emission, and analysis.
14 //===----------------------------------------------------------------------===//
16 //===----------------------------------------------------------------------===//
17 // X86 specific DAG Nodes.
20 def SDTIntShiftDOp: SDTypeProfile<1, 3,
21 [SDTCisSameAs<0, 1>, SDTCisSameAs<0, 2>,
22 SDTCisInt<0>, SDTCisInt<3>]>;
24 def SDTX86CmpTest : SDTypeProfile<1, 2, [SDTCisVT<0, i32>, SDTCisSameAs<1, 2>]>;
26 def SDTX86Cmpsd : SDTypeProfile<1, 3, [SDTCisVT<0, f64>, SDTCisSameAs<1, 2>, SDTCisVT<3, i8>]>;
27 def SDTX86Cmpss : SDTypeProfile<1, 3, [SDTCisVT<0, f32>, SDTCisSameAs<1, 2>, SDTCisVT<3, i8>]>;
29 def SDTX86Cmov : SDTypeProfile<1, 4,
30 [SDTCisSameAs<0, 1>, SDTCisSameAs<1, 2>,
31 SDTCisVT<3, i8>, SDTCisVT<4, i32>]>;
33 // Unary and binary operator instructions that set EFLAGS as a side-effect.
34 def SDTUnaryArithWithFlags : SDTypeProfile<2, 1,
35 [SDTCisInt<0>, SDTCisVT<1, i32>]>;
37 def SDTBinaryArithWithFlags : SDTypeProfile<2, 2,
40 SDTCisInt<0>, SDTCisVT<1, i32>]>;
42 // SDTBinaryArithWithFlagsInOut - RES1, EFLAGS = op LHS, RHS, EFLAGS
43 def SDTBinaryArithWithFlagsInOut : SDTypeProfile<2, 3,
49 // RES1, RES2, FLAGS = op LHS, RHS
50 def SDT2ResultBinaryArithWithFlags : SDTypeProfile<3, 2,
54 SDTCisInt<0>, SDTCisVT<1, i32>]>;
55 def SDTX86BrCond : SDTypeProfile<0, 3,
56 [SDTCisVT<0, OtherVT>,
57 SDTCisVT<1, i8>, SDTCisVT<2, i32>]>;
59 def SDTX86SetCC : SDTypeProfile<1, 2,
61 SDTCisVT<1, i8>, SDTCisVT<2, i32>]>;
62 def SDTX86SetCC_C : SDTypeProfile<1, 2,
64 SDTCisVT<1, i8>, SDTCisVT<2, i32>]>;
66 def SDTX86cas : SDTypeProfile<0, 3, [SDTCisPtrTy<0>, SDTCisInt<1>,
68 def SDTX86caspair : SDTypeProfile<0, 1, [SDTCisPtrTy<0>]>;
70 def SDTX86atomicBinary : SDTypeProfile<2, 3, [SDTCisInt<0>, SDTCisInt<1>,
71 SDTCisPtrTy<2>, SDTCisInt<3>,SDTCisInt<4>]>;
72 def SDTX86Ret : SDTypeProfile<0, -1, [SDTCisVT<0, i16>]>;
74 def SDT_X86CallSeqStart : SDCallSeqStart<[SDTCisVT<0, i32>]>;
75 def SDT_X86CallSeqEnd : SDCallSeqEnd<[SDTCisVT<0, i32>,
78 def SDT_X86Call : SDTypeProfile<0, -1, [SDTCisVT<0, iPTR>]>;
80 def SDT_X86VASTART_SAVE_XMM_REGS : SDTypeProfile<0, -1, [SDTCisVT<0, i8>,
84 def SDT_X86VAARG_64 : SDTypeProfile<1, -1, [SDTCisPtrTy<0>,
90 def SDTX86RepStr : SDTypeProfile<0, 1, [SDTCisVT<0, OtherVT>]>;
92 def SDTX86Void : SDTypeProfile<0, 0, []>;
94 def SDTX86Wrapper : SDTypeProfile<1, 1, [SDTCisSameAs<0, 1>, SDTCisPtrTy<0>]>;
96 def SDT_X86TLSADDR : SDTypeProfile<0, 1, [SDTCisInt<0>]>;
98 def SDT_X86TLSCALL : SDTypeProfile<0, 1, [SDTCisInt<0>]>;
100 def SDT_X86SEG_ALLOCA : SDTypeProfile<1, 1, [SDTCisVT<0, iPTR>, SDTCisVT<1, iPTR>]>;
102 def SDT_X86WIN_FTOL : SDTypeProfile<0, 1, [SDTCisFP<0>]>;
104 def SDT_X86EHRET : SDTypeProfile<0, 1, [SDTCisInt<0>]>;
106 def SDT_X86TCRET : SDTypeProfile<0, 2, [SDTCisPtrTy<0>, SDTCisVT<1, i32>]>;
108 def SDT_X86MEMBARRIER : SDTypeProfile<0, 0, []>;
110 def X86MemBarrier : SDNode<"X86ISD::MEMBARRIER", SDT_X86MEMBARRIER,
112 def X86MFence : SDNode<"X86ISD::MFENCE", SDT_X86MEMBARRIER,
114 def X86SFence : SDNode<"X86ISD::SFENCE", SDT_X86MEMBARRIER,
116 def X86LFence : SDNode<"X86ISD::LFENCE", SDT_X86MEMBARRIER,
120 def X86bsf : SDNode<"X86ISD::BSF", SDTUnaryArithWithFlags>;
121 def X86bsr : SDNode<"X86ISD::BSR", SDTUnaryArithWithFlags>;
122 def X86shld : SDNode<"X86ISD::SHLD", SDTIntShiftDOp>;
123 def X86shrd : SDNode<"X86ISD::SHRD", SDTIntShiftDOp>;
125 def X86cmp : SDNode<"X86ISD::CMP" , SDTX86CmpTest>;
126 def X86bt : SDNode<"X86ISD::BT", SDTX86CmpTest>;
128 def X86cmov : SDNode<"X86ISD::CMOV", SDTX86Cmov>;
129 def X86brcond : SDNode<"X86ISD::BRCOND", SDTX86BrCond,
131 def X86setcc : SDNode<"X86ISD::SETCC", SDTX86SetCC>;
132 def X86setcc_c : SDNode<"X86ISD::SETCC_CARRY", SDTX86SetCC_C>;
134 def X86cas : SDNode<"X86ISD::LCMPXCHG_DAG", SDTX86cas,
135 [SDNPHasChain, SDNPInGlue, SDNPOutGlue, SDNPMayStore,
136 SDNPMayLoad, SDNPMemOperand]>;
137 def X86cas8 : SDNode<"X86ISD::LCMPXCHG8_DAG", SDTX86caspair,
138 [SDNPHasChain, SDNPInGlue, SDNPOutGlue, SDNPMayStore,
139 SDNPMayLoad, SDNPMemOperand]>;
140 def X86cas16 : SDNode<"X86ISD::LCMPXCHG16_DAG", SDTX86caspair,
141 [SDNPHasChain, SDNPInGlue, SDNPOutGlue, SDNPMayStore,
142 SDNPMayLoad, SDNPMemOperand]>;
144 def X86AtomAdd64 : SDNode<"X86ISD::ATOMADD64_DAG", SDTX86atomicBinary,
145 [SDNPHasChain, SDNPMayStore,
146 SDNPMayLoad, SDNPMemOperand]>;
147 def X86AtomSub64 : SDNode<"X86ISD::ATOMSUB64_DAG", SDTX86atomicBinary,
148 [SDNPHasChain, SDNPMayStore,
149 SDNPMayLoad, SDNPMemOperand]>;
150 def X86AtomOr64 : SDNode<"X86ISD::ATOMOR64_DAG", SDTX86atomicBinary,
151 [SDNPHasChain, SDNPMayStore,
152 SDNPMayLoad, SDNPMemOperand]>;
153 def X86AtomXor64 : SDNode<"X86ISD::ATOMXOR64_DAG", SDTX86atomicBinary,
154 [SDNPHasChain, SDNPMayStore,
155 SDNPMayLoad, SDNPMemOperand]>;
156 def X86AtomAnd64 : SDNode<"X86ISD::ATOMAND64_DAG", SDTX86atomicBinary,
157 [SDNPHasChain, SDNPMayStore,
158 SDNPMayLoad, SDNPMemOperand]>;
159 def X86AtomNand64 : SDNode<"X86ISD::ATOMNAND64_DAG", SDTX86atomicBinary,
160 [SDNPHasChain, SDNPMayStore,
161 SDNPMayLoad, SDNPMemOperand]>;
162 def X86AtomSwap64 : SDNode<"X86ISD::ATOMSWAP64_DAG", SDTX86atomicBinary,
163 [SDNPHasChain, SDNPMayStore,
164 SDNPMayLoad, SDNPMemOperand]>;
165 def X86retflag : SDNode<"X86ISD::RET_FLAG", SDTX86Ret,
166 [SDNPHasChain, SDNPOptInGlue, SDNPVariadic]>;
168 def X86vastart_save_xmm_regs :
169 SDNode<"X86ISD::VASTART_SAVE_XMM_REGS",
170 SDT_X86VASTART_SAVE_XMM_REGS,
171 [SDNPHasChain, SDNPVariadic]>;
173 SDNode<"X86ISD::VAARG_64", SDT_X86VAARG_64,
174 [SDNPHasChain, SDNPMayLoad, SDNPMayStore,
176 def X86callseq_start :
177 SDNode<"ISD::CALLSEQ_START", SDT_X86CallSeqStart,
178 [SDNPHasChain, SDNPOutGlue]>;
180 SDNode<"ISD::CALLSEQ_END", SDT_X86CallSeqEnd,
181 [SDNPHasChain, SDNPOptInGlue, SDNPOutGlue]>;
183 def X86call : SDNode<"X86ISD::CALL", SDT_X86Call,
184 [SDNPHasChain, SDNPOutGlue, SDNPOptInGlue,
187 def X86rep_stos: SDNode<"X86ISD::REP_STOS", SDTX86RepStr,
188 [SDNPHasChain, SDNPInGlue, SDNPOutGlue, SDNPMayStore]>;
189 def X86rep_movs: SDNode<"X86ISD::REP_MOVS", SDTX86RepStr,
190 [SDNPHasChain, SDNPInGlue, SDNPOutGlue, SDNPMayStore,
193 def X86rdtsc : SDNode<"X86ISD::RDTSC_DAG", SDTX86Void,
194 [SDNPHasChain, SDNPOutGlue, SDNPSideEffect]>;
196 def X86Wrapper : SDNode<"X86ISD::Wrapper", SDTX86Wrapper>;
197 def X86WrapperRIP : SDNode<"X86ISD::WrapperRIP", SDTX86Wrapper>;
199 def X86tlsaddr : SDNode<"X86ISD::TLSADDR", SDT_X86TLSADDR,
200 [SDNPHasChain, SDNPOptInGlue, SDNPOutGlue]>;
202 def X86ehret : SDNode<"X86ISD::EH_RETURN", SDT_X86EHRET,
205 def X86tcret : SDNode<"X86ISD::TC_RETURN", SDT_X86TCRET,
206 [SDNPHasChain, SDNPOptInGlue, SDNPVariadic]>;
208 def X86add_flag : SDNode<"X86ISD::ADD", SDTBinaryArithWithFlags,
210 def X86sub_flag : SDNode<"X86ISD::SUB", SDTBinaryArithWithFlags>;
211 def X86smul_flag : SDNode<"X86ISD::SMUL", SDTBinaryArithWithFlags,
213 def X86umul_flag : SDNode<"X86ISD::UMUL", SDT2ResultBinaryArithWithFlags,
215 def X86adc_flag : SDNode<"X86ISD::ADC", SDTBinaryArithWithFlagsInOut>;
216 def X86sbb_flag : SDNode<"X86ISD::SBB", SDTBinaryArithWithFlagsInOut>;
218 def X86inc_flag : SDNode<"X86ISD::INC", SDTUnaryArithWithFlags>;
219 def X86dec_flag : SDNode<"X86ISD::DEC", SDTUnaryArithWithFlags>;
220 def X86or_flag : SDNode<"X86ISD::OR", SDTBinaryArithWithFlags,
222 def X86xor_flag : SDNode<"X86ISD::XOR", SDTBinaryArithWithFlags,
224 def X86and_flag : SDNode<"X86ISD::AND", SDTBinaryArithWithFlags,
226 def X86andn_flag : SDNode<"X86ISD::ANDN", SDTBinaryArithWithFlags>;
228 def X86blsi_flag : SDNode<"X86ISD::BLSI", SDTUnaryArithWithFlags>;
229 def X86blsmsk_flag : SDNode<"X86ISD::BLSMSK", SDTUnaryArithWithFlags>;
230 def X86blsr_flag : SDNode<"X86ISD::BLSR", SDTUnaryArithWithFlags>;
232 def X86mul_imm : SDNode<"X86ISD::MUL_IMM", SDTIntBinOp>;
234 def X86WinAlloca : SDNode<"X86ISD::WIN_ALLOCA", SDTX86Void,
235 [SDNPHasChain, SDNPInGlue, SDNPOutGlue]>;
237 def X86SegAlloca : SDNode<"X86ISD::SEG_ALLOCA", SDT_X86SEG_ALLOCA,
240 def X86TLSCall : SDNode<"X86ISD::TLSCALL", SDT_X86TLSCALL,
241 [SDNPHasChain, SDNPOptInGlue, SDNPOutGlue]>;
243 def X86WinFTOL : SDNode<"X86ISD::WIN_FTOL", SDT_X86WIN_FTOL,
244 [SDNPHasChain, SDNPOutGlue]>;
246 //===----------------------------------------------------------------------===//
247 // X86 Operand Definitions.
250 // A version of ptr_rc which excludes SP, ESP, and RSP. This is used for
251 // the index operand of an address, to conform to x86 encoding restrictions.
252 def ptr_rc_nosp : PointerLikeRegClass<1>;
254 // *mem - Operand definitions for the funky X86 addressing mode operands.
256 def X86MemAsmOperand : AsmOperandClass {
257 let Name = "Mem"; let PredicateMethod = "isMem";
259 def X86Mem8AsmOperand : AsmOperandClass {
260 let Name = "Mem8"; let PredicateMethod = "isMem8";
262 def X86Mem16AsmOperand : AsmOperandClass {
263 let Name = "Mem16"; let PredicateMethod = "isMem16";
265 def X86Mem32AsmOperand : AsmOperandClass {
266 let Name = "Mem32"; let PredicateMethod = "isMem32";
268 def X86Mem64AsmOperand : AsmOperandClass {
269 let Name = "Mem64"; let PredicateMethod = "isMem64";
271 def X86Mem80AsmOperand : AsmOperandClass {
272 let Name = "Mem80"; let PredicateMethod = "isMem80";
274 def X86Mem128AsmOperand : AsmOperandClass {
275 let Name = "Mem128"; let PredicateMethod = "isMem128";
277 def X86Mem256AsmOperand : AsmOperandClass {
278 let Name = "Mem256"; let PredicateMethod = "isMem256";
281 def X86AbsMemAsmOperand : AsmOperandClass {
283 let SuperClasses = [X86MemAsmOperand];
285 class X86MemOperand<string printMethod> : Operand<iPTR> {
286 let PrintMethod = printMethod;
287 let MIOperandInfo = (ops ptr_rc, i8imm, ptr_rc_nosp, i32imm, i8imm);
288 let ParserMatchClass = X86MemAsmOperand;
291 let OperandType = "OPERAND_MEMORY" in {
292 def opaque32mem : X86MemOperand<"printopaquemem">;
293 def opaque48mem : X86MemOperand<"printopaquemem">;
294 def opaque80mem : X86MemOperand<"printopaquemem">;
295 def opaque512mem : X86MemOperand<"printopaquemem">;
297 def i8mem : X86MemOperand<"printi8mem"> {
298 let ParserMatchClass = X86Mem8AsmOperand; }
299 def i16mem : X86MemOperand<"printi16mem"> {
300 let ParserMatchClass = X86Mem16AsmOperand; }
301 def i32mem : X86MemOperand<"printi32mem"> {
302 let ParserMatchClass = X86Mem32AsmOperand; }
303 def i64mem : X86MemOperand<"printi64mem"> {
304 let ParserMatchClass = X86Mem64AsmOperand; }
305 def i128mem : X86MemOperand<"printi128mem"> {
306 let ParserMatchClass = X86Mem128AsmOperand; }
307 def i256mem : X86MemOperand<"printi256mem"> {
308 let ParserMatchClass = X86Mem256AsmOperand; }
309 def f32mem : X86MemOperand<"printf32mem"> {
310 let ParserMatchClass = X86Mem32AsmOperand; }
311 def f64mem : X86MemOperand<"printf64mem"> {
312 let ParserMatchClass = X86Mem64AsmOperand; }
313 def f80mem : X86MemOperand<"printf80mem"> {
314 let ParserMatchClass = X86Mem80AsmOperand; }
315 def f128mem : X86MemOperand<"printf128mem"> {
316 let ParserMatchClass = X86Mem128AsmOperand; }
317 def f256mem : X86MemOperand<"printf256mem">{
318 let ParserMatchClass = X86Mem256AsmOperand; }
321 // A version of i8mem for use on x86-64 that uses GR64_NOREX instead of
322 // plain GR64, so that it doesn't potentially require a REX prefix.
323 def i8mem_NOREX : Operand<i64> {
324 let PrintMethod = "printi8mem";
325 let MIOperandInfo = (ops GR64_NOREX, i8imm, GR64_NOREX_NOSP, i32imm, i8imm);
326 let ParserMatchClass = X86Mem8AsmOperand;
327 let OperandType = "OPERAND_MEMORY";
330 // GPRs available for tailcall.
331 // It represents GR64_TC or GR64_TCW64.
332 def ptr_rc_tailcall : PointerLikeRegClass<2>;
334 // Special i32mem for addresses of load folding tail calls. These are not
335 // allowed to use callee-saved registers since they must be scheduled
336 // after callee-saved register are popped.
337 def i32mem_TC : Operand<i32> {
338 let PrintMethod = "printi32mem";
339 let MIOperandInfo = (ops GR32_TC, i8imm, GR32_TC, i32imm, i8imm);
340 let ParserMatchClass = X86Mem32AsmOperand;
341 let OperandType = "OPERAND_MEMORY";
344 // Special i64mem for addresses of load folding tail calls. These are not
345 // allowed to use callee-saved registers since they must be scheduled
346 // after callee-saved register are popped.
347 def i64mem_TC : Operand<i64> {
348 let PrintMethod = "printi64mem";
349 let MIOperandInfo = (ops ptr_rc_tailcall, i8imm,
350 ptr_rc_tailcall, i32imm, i8imm);
351 let ParserMatchClass = X86Mem64AsmOperand;
352 let OperandType = "OPERAND_MEMORY";
355 let OperandType = "OPERAND_PCREL",
356 ParserMatchClass = X86AbsMemAsmOperand,
357 PrintMethod = "print_pcrel_imm" in {
358 def i32imm_pcrel : Operand<i32>;
359 def i16imm_pcrel : Operand<i16>;
361 def offset8 : Operand<i64>;
362 def offset16 : Operand<i64>;
363 def offset32 : Operand<i64>;
364 def offset64 : Operand<i64>;
366 // Branch targets have OtherVT type and print as pc-relative values.
367 def brtarget : Operand<OtherVT>;
368 def brtarget8 : Operand<OtherVT>;
372 def SSECC : Operand<i8> {
373 let PrintMethod = "printSSECC";
374 let OperandType = "OPERAND_IMMEDIATE";
377 def AVXCC : Operand<i8> {
378 let PrintMethod = "printSSECC";
379 let OperandType = "OPERAND_IMMEDIATE";
382 class ImmSExtAsmOperandClass : AsmOperandClass {
383 let SuperClasses = [ImmAsmOperand];
384 let RenderMethod = "addImmOperands";
387 class ImmZExtAsmOperandClass : AsmOperandClass {
388 let SuperClasses = [ImmAsmOperand];
389 let RenderMethod = "addImmOperands";
392 // Sign-extended immediate classes. We don't need to define the full lattice
393 // here because there is no instruction with an ambiguity between ImmSExti64i32
396 // The strange ranges come from the fact that the assembler always works with
397 // 64-bit immediates, but for a 16-bit target value we want to accept both "-1"
398 // (which will be a -1ULL), and "0xFF" (-1 in 16-bits).
401 // [0xFFFFFFFF80000000, 0xFFFFFFFFFFFFFFFF]
402 def ImmSExti64i32AsmOperand : ImmSExtAsmOperandClass {
403 let Name = "ImmSExti64i32";
406 // [0, 0x0000007F] | [0x000000000000FF80, 0x000000000000FFFF] |
407 // [0xFFFFFFFFFFFFFF80, 0xFFFFFFFFFFFFFFFF]
408 def ImmSExti16i8AsmOperand : ImmSExtAsmOperandClass {
409 let Name = "ImmSExti16i8";
410 let SuperClasses = [ImmSExti64i32AsmOperand];
413 // [0, 0x0000007F] | [0x00000000FFFFFF80, 0x00000000FFFFFFFF] |
414 // [0xFFFFFFFFFFFFFF80, 0xFFFFFFFFFFFFFFFF]
415 def ImmSExti32i8AsmOperand : ImmSExtAsmOperandClass {
416 let Name = "ImmSExti32i8";
420 def ImmZExtu32u8AsmOperand : ImmZExtAsmOperandClass {
421 let Name = "ImmZExtu32u8";
426 // [0xFFFFFFFFFFFFFF80, 0xFFFFFFFFFFFFFFFF]
427 def ImmSExti64i8AsmOperand : ImmSExtAsmOperandClass {
428 let Name = "ImmSExti64i8";
429 let SuperClasses = [ImmSExti16i8AsmOperand, ImmSExti32i8AsmOperand,
430 ImmSExti64i32AsmOperand];
433 // A couple of more descriptive operand definitions.
434 // 16-bits but only 8 bits are significant.
435 def i16i8imm : Operand<i16> {
436 let ParserMatchClass = ImmSExti16i8AsmOperand;
437 let OperandType = "OPERAND_IMMEDIATE";
439 // 32-bits but only 8 bits are significant.
440 def i32i8imm : Operand<i32> {
441 let ParserMatchClass = ImmSExti32i8AsmOperand;
442 let OperandType = "OPERAND_IMMEDIATE";
444 // 32-bits but only 8 bits are significant, and those 8 bits are unsigned.
445 def u32u8imm : Operand<i32> {
446 let ParserMatchClass = ImmZExtu32u8AsmOperand;
447 let OperandType = "OPERAND_IMMEDIATE";
450 // 64-bits but only 32 bits are significant.
451 def i64i32imm : Operand<i64> {
452 let ParserMatchClass = ImmSExti64i32AsmOperand;
453 let OperandType = "OPERAND_IMMEDIATE";
456 // 64-bits but only 32 bits are significant, and those bits are treated as being
458 def i64i32imm_pcrel : Operand<i64> {
459 let PrintMethod = "print_pcrel_imm";
460 let ParserMatchClass = X86AbsMemAsmOperand;
461 let OperandType = "OPERAND_PCREL";
464 // 64-bits but only 8 bits are significant.
465 def i64i8imm : Operand<i64> {
466 let ParserMatchClass = ImmSExti64i8AsmOperand;
467 let OperandType = "OPERAND_IMMEDIATE";
470 def lea64_32mem : Operand<i32> {
471 let PrintMethod = "printi32mem";
472 let AsmOperandLowerMethod = "lower_lea64_32mem";
473 let MIOperandInfo = (ops GR32, i8imm, GR32_NOSP, i32imm, i8imm);
474 let ParserMatchClass = X86MemAsmOperand;
478 //===----------------------------------------------------------------------===//
479 // X86 Complex Pattern Definitions.
482 // Define X86 specific addressing mode.
483 def addr : ComplexPattern<iPTR, 5, "SelectAddr", [], [SDNPWantParent]>;
484 def lea32addr : ComplexPattern<i32, 5, "SelectLEAAddr",
485 [add, sub, mul, X86mul_imm, shl, or, frameindex],
487 def tls32addr : ComplexPattern<i32, 5, "SelectTLSADDRAddr",
488 [tglobaltlsaddr], []>;
490 def lea64addr : ComplexPattern<i64, 5, "SelectLEAAddr",
491 [add, sub, mul, X86mul_imm, shl, or, frameindex,
494 def tls64addr : ComplexPattern<i64, 5, "SelectTLSADDRAddr",
495 [tglobaltlsaddr], []>;
497 //===----------------------------------------------------------------------===//
498 // X86 Instruction Predicate Definitions.
499 def HasCMov : Predicate<"Subtarget->hasCMov()">;
500 def NoCMov : Predicate<"!Subtarget->hasCMov()">;
502 def HasMMX : Predicate<"Subtarget->hasMMX()">;
503 def Has3DNow : Predicate<"Subtarget->has3DNow()">;
504 def Has3DNowA : Predicate<"Subtarget->has3DNowA()">;
505 def HasSSE1 : Predicate<"Subtarget->hasSSE1()">;
506 def HasSSE2 : Predicate<"Subtarget->hasSSE2()">;
507 def HasSSE3 : Predicate<"Subtarget->hasSSE3()">;
508 def HasSSSE3 : Predicate<"Subtarget->hasSSSE3()">;
509 def HasSSE41 : Predicate<"Subtarget->hasSSE41()">;
510 def HasSSE42 : Predicate<"Subtarget->hasSSE42()">;
511 def HasSSE4A : Predicate<"Subtarget->hasSSE4A()">;
512 def HasAVX : Predicate<"Subtarget->hasAVX()">;
513 def HasAVX2 : Predicate<"Subtarget->hasAVX2()">;
515 def HasPOPCNT : Predicate<"Subtarget->hasPOPCNT()">;
516 def HasAES : Predicate<"Subtarget->hasAES()">;
517 def HasCLMUL : Predicate<"Subtarget->hasCLMUL()">;
518 def HasFMA3 : Predicate<"Subtarget->hasFMA3()">;
519 def HasFMA4 : Predicate<"Subtarget->hasFMA4()">;
520 def HasXOP : Predicate<"Subtarget->hasXOP()">;
521 def HasMOVBE : Predicate<"Subtarget->hasMOVBE()">;
522 def HasRDRAND : Predicate<"Subtarget->hasRDRAND()">;
523 def HasF16C : Predicate<"Subtarget->hasF16C()">;
524 def HasFSGSBase : Predicate<"Subtarget->hasFSGSBase()">;
525 def HasLZCNT : Predicate<"Subtarget->hasLZCNT()">;
526 def HasBMI : Predicate<"Subtarget->hasBMI()">;
527 def HasBMI2 : Predicate<"Subtarget->hasBMI2()">;
528 def FPStackf32 : Predicate<"!Subtarget->hasSSE1()">;
529 def FPStackf64 : Predicate<"!Subtarget->hasSSE2()">;
530 def HasCmpxchg16b: Predicate<"Subtarget->hasCmpxchg16b()">;
531 def In32BitMode : Predicate<"!Subtarget->is64Bit()">,
532 AssemblerPredicate<"!Mode64Bit">;
533 def In64BitMode : Predicate<"Subtarget->is64Bit()">,
534 AssemblerPredicate<"Mode64Bit">;
535 def IsWin64 : Predicate<"Subtarget->isTargetWin64()">;
536 def IsNaCl : Predicate<"Subtarget->isTargetNaCl()">;
537 def NotNaCl : Predicate<"!Subtarget->isTargetNaCl()">;
538 def SmallCode : Predicate<"TM.getCodeModel() == CodeModel::Small">;
539 def KernelCode : Predicate<"TM.getCodeModel() == CodeModel::Kernel">;
540 def FarData : Predicate<"TM.getCodeModel() != CodeModel::Small &&"
541 "TM.getCodeModel() != CodeModel::Kernel">;
542 def NearData : Predicate<"TM.getCodeModel() == CodeModel::Small ||"
543 "TM.getCodeModel() == CodeModel::Kernel">;
544 def IsStatic : Predicate<"TM.getRelocationModel() == Reloc::Static">;
545 def IsNotPIC : Predicate<"TM.getRelocationModel() != Reloc::PIC_">;
546 def OptForSize : Predicate<"OptForSize">;
547 def OptForSpeed : Predicate<"!OptForSize">;
548 def FastBTMem : Predicate<"!Subtarget->isBTMemSlow()">;
549 def CallImmAddr : Predicate<"Subtarget->IsLegalToCallImmediateAddr(TM)">;
551 //===----------------------------------------------------------------------===//
552 // X86 Instruction Format Definitions.
555 include "X86InstrFormats.td"
557 //===----------------------------------------------------------------------===//
558 // Pattern fragments.
561 // X86 specific condition code. These correspond to CondCode in
562 // X86InstrInfo.h. They must be kept in synch.
563 def X86_COND_A : PatLeaf<(i8 0)>; // alt. COND_NBE
564 def X86_COND_AE : PatLeaf<(i8 1)>; // alt. COND_NC
565 def X86_COND_B : PatLeaf<(i8 2)>; // alt. COND_C
566 def X86_COND_BE : PatLeaf<(i8 3)>; // alt. COND_NA
567 def X86_COND_E : PatLeaf<(i8 4)>; // alt. COND_Z
568 def X86_COND_G : PatLeaf<(i8 5)>; // alt. COND_NLE
569 def X86_COND_GE : PatLeaf<(i8 6)>; // alt. COND_NL
570 def X86_COND_L : PatLeaf<(i8 7)>; // alt. COND_NGE
571 def X86_COND_LE : PatLeaf<(i8 8)>; // alt. COND_NG
572 def X86_COND_NE : PatLeaf<(i8 9)>; // alt. COND_NZ
573 def X86_COND_NO : PatLeaf<(i8 10)>;
574 def X86_COND_NP : PatLeaf<(i8 11)>; // alt. COND_PO
575 def X86_COND_NS : PatLeaf<(i8 12)>;
576 def X86_COND_O : PatLeaf<(i8 13)>;
577 def X86_COND_P : PatLeaf<(i8 14)>; // alt. COND_PE
578 def X86_COND_S : PatLeaf<(i8 15)>;
580 let FastIselShouldIgnore = 1 in { // FastIsel should ignore all simm8 instrs.
581 def i16immSExt8 : ImmLeaf<i16, [{ return Imm == (int8_t)Imm; }]>;
582 def i32immSExt8 : ImmLeaf<i32, [{ return Imm == (int8_t)Imm; }]>;
583 def i64immSExt8 : ImmLeaf<i64, [{ return Imm == (int8_t)Imm; }]>;
586 def i64immSExt32 : ImmLeaf<i64, [{ return Imm == (int32_t)Imm; }]>;
589 // i64immZExt32 predicate - True if the 64-bit immediate fits in a 32-bit
591 def i64immZExt32 : ImmLeaf<i64, [{ return (uint64_t)Imm == (uint32_t)Imm; }]>;
593 def i64immZExt32SExt8 : ImmLeaf<i64, [{
594 return (uint64_t)Imm == (uint32_t)Imm && (int32_t)Imm == (int8_t)Imm;
597 // Helper fragments for loads.
598 // It's always safe to treat a anyext i16 load as a i32 load if the i16 is
599 // known to be 32-bit aligned or better. Ditto for i8 to i16.
600 def loadi16 : PatFrag<(ops node:$ptr), (i16 (unindexedload node:$ptr)), [{
601 LoadSDNode *LD = cast<LoadSDNode>(N);
602 ISD::LoadExtType ExtType = LD->getExtensionType();
603 if (ExtType == ISD::NON_EXTLOAD)
605 if (ExtType == ISD::EXTLOAD)
606 return LD->getAlignment() >= 2 && !LD->isVolatile();
610 def loadi16_anyext : PatFrag<(ops node:$ptr), (i32 (unindexedload node:$ptr)),[{
611 LoadSDNode *LD = cast<LoadSDNode>(N);
612 ISD::LoadExtType ExtType = LD->getExtensionType();
613 if (ExtType == ISD::EXTLOAD)
614 return LD->getAlignment() >= 2 && !LD->isVolatile();
618 def loadi32 : PatFrag<(ops node:$ptr), (i32 (unindexedload node:$ptr)), [{
619 LoadSDNode *LD = cast<LoadSDNode>(N);
620 ISD::LoadExtType ExtType = LD->getExtensionType();
621 if (ExtType == ISD::NON_EXTLOAD)
623 if (ExtType == ISD::EXTLOAD)
624 return LD->getAlignment() >= 4 && !LD->isVolatile();
628 def loadi8 : PatFrag<(ops node:$ptr), (i8 (load node:$ptr))>;
629 def loadi64 : PatFrag<(ops node:$ptr), (i64 (load node:$ptr))>;
630 def loadf32 : PatFrag<(ops node:$ptr), (f32 (load node:$ptr))>;
631 def loadf64 : PatFrag<(ops node:$ptr), (f64 (load node:$ptr))>;
632 def loadf80 : PatFrag<(ops node:$ptr), (f80 (load node:$ptr))>;
634 def sextloadi16i8 : PatFrag<(ops node:$ptr), (i16 (sextloadi8 node:$ptr))>;
635 def sextloadi32i8 : PatFrag<(ops node:$ptr), (i32 (sextloadi8 node:$ptr))>;
636 def sextloadi32i16 : PatFrag<(ops node:$ptr), (i32 (sextloadi16 node:$ptr))>;
637 def sextloadi64i8 : PatFrag<(ops node:$ptr), (i64 (sextloadi8 node:$ptr))>;
638 def sextloadi64i16 : PatFrag<(ops node:$ptr), (i64 (sextloadi16 node:$ptr))>;
639 def sextloadi64i32 : PatFrag<(ops node:$ptr), (i64 (sextloadi32 node:$ptr))>;
641 def zextloadi8i1 : PatFrag<(ops node:$ptr), (i8 (zextloadi1 node:$ptr))>;
642 def zextloadi16i1 : PatFrag<(ops node:$ptr), (i16 (zextloadi1 node:$ptr))>;
643 def zextloadi32i1 : PatFrag<(ops node:$ptr), (i32 (zextloadi1 node:$ptr))>;
644 def zextloadi16i8 : PatFrag<(ops node:$ptr), (i16 (zextloadi8 node:$ptr))>;
645 def zextloadi32i8 : PatFrag<(ops node:$ptr), (i32 (zextloadi8 node:$ptr))>;
646 def zextloadi32i16 : PatFrag<(ops node:$ptr), (i32 (zextloadi16 node:$ptr))>;
647 def zextloadi64i1 : PatFrag<(ops node:$ptr), (i64 (zextloadi1 node:$ptr))>;
648 def zextloadi64i8 : PatFrag<(ops node:$ptr), (i64 (zextloadi8 node:$ptr))>;
649 def zextloadi64i16 : PatFrag<(ops node:$ptr), (i64 (zextloadi16 node:$ptr))>;
650 def zextloadi64i32 : PatFrag<(ops node:$ptr), (i64 (zextloadi32 node:$ptr))>;
652 def extloadi8i1 : PatFrag<(ops node:$ptr), (i8 (extloadi1 node:$ptr))>;
653 def extloadi16i1 : PatFrag<(ops node:$ptr), (i16 (extloadi1 node:$ptr))>;
654 def extloadi32i1 : PatFrag<(ops node:$ptr), (i32 (extloadi1 node:$ptr))>;
655 def extloadi16i8 : PatFrag<(ops node:$ptr), (i16 (extloadi8 node:$ptr))>;
656 def extloadi32i8 : PatFrag<(ops node:$ptr), (i32 (extloadi8 node:$ptr))>;
657 def extloadi32i16 : PatFrag<(ops node:$ptr), (i32 (extloadi16 node:$ptr))>;
658 def extloadi64i1 : PatFrag<(ops node:$ptr), (i64 (extloadi1 node:$ptr))>;
659 def extloadi64i8 : PatFrag<(ops node:$ptr), (i64 (extloadi8 node:$ptr))>;
660 def extloadi64i16 : PatFrag<(ops node:$ptr), (i64 (extloadi16 node:$ptr))>;
661 def extloadi64i32 : PatFrag<(ops node:$ptr), (i64 (extloadi32 node:$ptr))>;
664 // An 'and' node with a single use.
665 def and_su : PatFrag<(ops node:$lhs, node:$rhs), (and node:$lhs, node:$rhs), [{
666 return N->hasOneUse();
668 // An 'srl' node with a single use.
669 def srl_su : PatFrag<(ops node:$lhs, node:$rhs), (srl node:$lhs, node:$rhs), [{
670 return N->hasOneUse();
672 // An 'trunc' node with a single use.
673 def trunc_su : PatFrag<(ops node:$src), (trunc node:$src), [{
674 return N->hasOneUse();
677 //===----------------------------------------------------------------------===//
682 let neverHasSideEffects = 1 in {
683 def NOOP : I<0x90, RawFrm, (outs), (ins), "nop", []>;
684 def NOOPW : I<0x1f, MRM0m, (outs), (ins i16mem:$zero),
685 "nop{w}\t$zero", []>, TB, OpSize;
686 def NOOPL : I<0x1f, MRM0m, (outs), (ins i32mem:$zero),
687 "nop{l}\t$zero", []>, TB;
691 // Constructing a stack frame.
692 def ENTER : Ii16<0xC8, RawFrmImm8, (outs), (ins i16imm:$len, i8imm:$lvl),
693 "enter\t$len, $lvl", []>;
695 let Defs = [EBP, ESP], Uses = [EBP, ESP], mayLoad = 1, neverHasSideEffects=1 in
696 def LEAVE : I<0xC9, RawFrm,
697 (outs), (ins), "leave", []>, Requires<[In32BitMode]>;
699 let Defs = [RBP,RSP], Uses = [RBP,RSP], mayLoad = 1, neverHasSideEffects = 1 in
700 def LEAVE64 : I<0xC9, RawFrm,
701 (outs), (ins), "leave", []>, Requires<[In64BitMode]>;
703 //===----------------------------------------------------------------------===//
704 // Miscellaneous Instructions.
707 let Defs = [ESP], Uses = [ESP], neverHasSideEffects=1 in {
709 def POP16r : I<0x58, AddRegFrm, (outs GR16:$reg), (ins), "pop{w}\t$reg", []>,
711 def POP32r : I<0x58, AddRegFrm, (outs GR32:$reg), (ins), "pop{l}\t$reg", []>;
712 def POP16rmr: I<0x8F, MRM0r, (outs GR16:$reg), (ins), "pop{w}\t$reg", []>,
714 def POP16rmm: I<0x8F, MRM0m, (outs i16mem:$dst), (ins), "pop{w}\t$dst", []>,
716 def POP32rmr: I<0x8F, MRM0r, (outs GR32:$reg), (ins), "pop{l}\t$reg", []>;
717 def POP32rmm: I<0x8F, MRM0m, (outs i32mem:$dst), (ins), "pop{l}\t$dst", []>;
719 def POPF16 : I<0x9D, RawFrm, (outs), (ins), "popf{w}", []>, OpSize;
720 def POPF32 : I<0x9D, RawFrm, (outs), (ins), "popf{l|d}", []>,
721 Requires<[In32BitMode]>;
724 let mayStore = 1 in {
725 def PUSH16r : I<0x50, AddRegFrm, (outs), (ins GR16:$reg), "push{w}\t$reg",[]>,
727 def PUSH32r : I<0x50, AddRegFrm, (outs), (ins GR32:$reg), "push{l}\t$reg",[]>;
728 def PUSH16rmr: I<0xFF, MRM6r, (outs), (ins GR16:$reg), "push{w}\t$reg",[]>,
730 def PUSH16rmm: I<0xFF, MRM6m, (outs), (ins i16mem:$src), "push{w}\t$src",[]>,
732 def PUSH32rmr: I<0xFF, MRM6r, (outs), (ins GR32:$reg), "push{l}\t$reg",[]>;
733 def PUSH32rmm: I<0xFF, MRM6m, (outs), (ins i32mem:$src), "push{l}\t$src",[]>;
735 def PUSHi8 : Ii8<0x6a, RawFrm, (outs), (ins i32i8imm:$imm),
736 "push{l}\t$imm", []>;
737 def PUSHi16 : Ii16<0x68, RawFrm, (outs), (ins i16imm:$imm),
738 "push{w}\t$imm", []>, OpSize;
739 def PUSHi32 : Ii32<0x68, RawFrm, (outs), (ins i32imm:$imm),
740 "push{l}\t$imm", []>;
742 def PUSHF16 : I<0x9C, RawFrm, (outs), (ins), "pushf{w}", []>, OpSize;
743 def PUSHF32 : I<0x9C, RawFrm, (outs), (ins), "pushf{l|d}", []>,
744 Requires<[In32BitMode]>;
749 let Defs = [RSP], Uses = [RSP], neverHasSideEffects=1 in {
751 def POP64r : I<0x58, AddRegFrm,
752 (outs GR64:$reg), (ins), "pop{q}\t$reg", []>;
753 def POP64rmr: I<0x8F, MRM0r, (outs GR64:$reg), (ins), "pop{q}\t$reg", []>;
754 def POP64rmm: I<0x8F, MRM0m, (outs i64mem:$dst), (ins), "pop{q}\t$dst", []>;
756 let mayStore = 1 in {
757 def PUSH64r : I<0x50, AddRegFrm,
758 (outs), (ins GR64:$reg), "push{q}\t$reg", []>;
759 def PUSH64rmr: I<0xFF, MRM6r, (outs), (ins GR64:$reg), "push{q}\t$reg", []>;
760 def PUSH64rmm: I<0xFF, MRM6m, (outs), (ins i64mem:$src), "push{q}\t$src", []>;
764 let Defs = [RSP], Uses = [RSP], neverHasSideEffects = 1, mayStore = 1 in {
765 def PUSH64i8 : Ii8<0x6a, RawFrm, (outs), (ins i64i8imm:$imm),
766 "push{q}\t$imm", []>;
767 def PUSH64i16 : Ii16<0x68, RawFrm, (outs), (ins i16imm:$imm),
768 "push{q}\t$imm", []>;
769 def PUSH64i32 : Ii32<0x68, RawFrm, (outs), (ins i64i32imm:$imm),
770 "push{q}\t$imm", []>;
773 let Defs = [RSP, EFLAGS], Uses = [RSP], mayLoad = 1, neverHasSideEffects=1 in
774 def POPF64 : I<0x9D, RawFrm, (outs), (ins), "popfq", []>,
775 Requires<[In64BitMode]>;
776 let Defs = [RSP], Uses = [RSP, EFLAGS], mayStore = 1, neverHasSideEffects=1 in
777 def PUSHF64 : I<0x9C, RawFrm, (outs), (ins), "pushfq", []>,
778 Requires<[In64BitMode]>;
782 let Defs = [EDI, ESI, EBP, EBX, EDX, ECX, EAX, ESP], Uses = [ESP],
783 mayLoad=1, neverHasSideEffects=1 in {
784 def POPA32 : I<0x61, RawFrm, (outs), (ins), "popa{l}", []>,
785 Requires<[In32BitMode]>;
787 let Defs = [ESP], Uses = [EDI, ESI, EBP, EBX, EDX, ECX, EAX, ESP],
788 mayStore=1, neverHasSideEffects=1 in {
789 def PUSHA32 : I<0x60, RawFrm, (outs), (ins), "pusha{l}", []>,
790 Requires<[In32BitMode]>;
793 let Constraints = "$src = $dst" in { // GR32 = bswap GR32
794 def BSWAP32r : I<0xC8, AddRegFrm,
795 (outs GR32:$dst), (ins GR32:$src),
797 [(set GR32:$dst, (bswap GR32:$src))]>, TB;
799 def BSWAP64r : RI<0xC8, AddRegFrm, (outs GR64:$dst), (ins GR64:$src),
801 [(set GR64:$dst, (bswap GR64:$src))]>, TB;
802 } // Constraints = "$src = $dst"
804 // Bit scan instructions.
805 let Defs = [EFLAGS] in {
806 def BSF16rr : I<0xBC, MRMSrcReg, (outs GR16:$dst), (ins GR16:$src),
807 "bsf{w}\t{$src, $dst|$dst, $src}",
808 [(set GR16:$dst, EFLAGS, (X86bsf GR16:$src))]>, TB, OpSize;
809 def BSF16rm : I<0xBC, MRMSrcMem, (outs GR16:$dst), (ins i16mem:$src),
810 "bsf{w}\t{$src, $dst|$dst, $src}",
811 [(set GR16:$dst, EFLAGS, (X86bsf (loadi16 addr:$src)))]>, TB,
813 def BSF32rr : I<0xBC, MRMSrcReg, (outs GR32:$dst), (ins GR32:$src),
814 "bsf{l}\t{$src, $dst|$dst, $src}",
815 [(set GR32:$dst, EFLAGS, (X86bsf GR32:$src))]>, TB;
816 def BSF32rm : I<0xBC, MRMSrcMem, (outs GR32:$dst), (ins i32mem:$src),
817 "bsf{l}\t{$src, $dst|$dst, $src}",
818 [(set GR32:$dst, EFLAGS, (X86bsf (loadi32 addr:$src)))]>, TB;
819 def BSF64rr : RI<0xBC, MRMSrcReg, (outs GR64:$dst), (ins GR64:$src),
820 "bsf{q}\t{$src, $dst|$dst, $src}",
821 [(set GR64:$dst, EFLAGS, (X86bsf GR64:$src))]>, TB;
822 def BSF64rm : RI<0xBC, MRMSrcMem, (outs GR64:$dst), (ins i64mem:$src),
823 "bsf{q}\t{$src, $dst|$dst, $src}",
824 [(set GR64:$dst, EFLAGS, (X86bsf (loadi64 addr:$src)))]>, TB;
826 def BSR16rr : I<0xBD, MRMSrcReg, (outs GR16:$dst), (ins GR16:$src),
827 "bsr{w}\t{$src, $dst|$dst, $src}",
828 [(set GR16:$dst, EFLAGS, (X86bsr GR16:$src))]>, TB, OpSize;
829 def BSR16rm : I<0xBD, MRMSrcMem, (outs GR16:$dst), (ins i16mem:$src),
830 "bsr{w}\t{$src, $dst|$dst, $src}",
831 [(set GR16:$dst, EFLAGS, (X86bsr (loadi16 addr:$src)))]>, TB,
833 def BSR32rr : I<0xBD, MRMSrcReg, (outs GR32:$dst), (ins GR32:$src),
834 "bsr{l}\t{$src, $dst|$dst, $src}",
835 [(set GR32:$dst, EFLAGS, (X86bsr GR32:$src))]>, TB;
836 def BSR32rm : I<0xBD, MRMSrcMem, (outs GR32:$dst), (ins i32mem:$src),
837 "bsr{l}\t{$src, $dst|$dst, $src}",
838 [(set GR32:$dst, EFLAGS, (X86bsr (loadi32 addr:$src)))]>, TB;
839 def BSR64rr : RI<0xBD, MRMSrcReg, (outs GR64:$dst), (ins GR64:$src),
840 "bsr{q}\t{$src, $dst|$dst, $src}",
841 [(set GR64:$dst, EFLAGS, (X86bsr GR64:$src))]>, TB;
842 def BSR64rm : RI<0xBD, MRMSrcMem, (outs GR64:$dst), (ins i64mem:$src),
843 "bsr{q}\t{$src, $dst|$dst, $src}",
844 [(set GR64:$dst, EFLAGS, (X86bsr (loadi64 addr:$src)))]>, TB;
848 // These uses the DF flag in the EFLAGS register to inc or dec EDI and ESI
849 let Defs = [EDI,ESI], Uses = [EDI,ESI,EFLAGS] in {
850 def MOVSB : I<0xA4, RawFrm, (outs), (ins), "movsb", []>;
851 def MOVSW : I<0xA5, RawFrm, (outs), (ins), "movsw", []>, OpSize;
852 def MOVSD : I<0xA5, RawFrm, (outs), (ins), "movs{l|d}", []>;
853 def MOVSQ : RI<0xA5, RawFrm, (outs), (ins), "movsq", []>;
856 // These uses the DF flag in the EFLAGS register to inc or dec EDI and ESI
857 let Defs = [EDI], Uses = [AL,EDI,EFLAGS] in
858 def STOSB : I<0xAA, RawFrm, (outs), (ins), "stosb", []>;
859 let Defs = [EDI], Uses = [AX,EDI,EFLAGS] in
860 def STOSW : I<0xAB, RawFrm, (outs), (ins), "stosw", []>, OpSize;
861 let Defs = [EDI], Uses = [EAX,EDI,EFLAGS] in
862 def STOSD : I<0xAB, RawFrm, (outs), (ins), "stos{l|d}", []>;
863 let Defs = [RCX,RDI], Uses = [RAX,RCX,RDI,EFLAGS] in
864 def STOSQ : RI<0xAB, RawFrm, (outs), (ins), "stosq", []>;
866 def SCAS8 : I<0xAE, RawFrm, (outs), (ins), "scasb", []>;
867 def SCAS16 : I<0xAF, RawFrm, (outs), (ins), "scasw", []>, OpSize;
868 def SCAS32 : I<0xAF, RawFrm, (outs), (ins), "scas{l|d}", []>;
869 def SCAS64 : RI<0xAF, RawFrm, (outs), (ins), "scasq", []>;
871 def CMPS8 : I<0xA6, RawFrm, (outs), (ins), "cmpsb", []>;
872 def CMPS16 : I<0xA7, RawFrm, (outs), (ins), "cmpsw", []>, OpSize;
873 def CMPS32 : I<0xA7, RawFrm, (outs), (ins), "cmps{l|d}", []>;
874 def CMPS64 : RI<0xA7, RawFrm, (outs), (ins), "cmpsq", []>;
877 //===----------------------------------------------------------------------===//
878 // Move Instructions.
881 let neverHasSideEffects = 1 in {
882 def MOV8rr : I<0x88, MRMDestReg, (outs GR8 :$dst), (ins GR8 :$src),
883 "mov{b}\t{$src, $dst|$dst, $src}", []>;
884 def MOV16rr : I<0x89, MRMDestReg, (outs GR16:$dst), (ins GR16:$src),
885 "mov{w}\t{$src, $dst|$dst, $src}", []>, OpSize;
886 def MOV32rr : I<0x89, MRMDestReg, (outs GR32:$dst), (ins GR32:$src),
887 "mov{l}\t{$src, $dst|$dst, $src}", []>;
888 def MOV64rr : RI<0x89, MRMDestReg, (outs GR64:$dst), (ins GR64:$src),
889 "mov{q}\t{$src, $dst|$dst, $src}", []>;
891 let isReMaterializable = 1, isAsCheapAsAMove = 1 in {
892 def MOV8ri : Ii8 <0xB0, AddRegFrm, (outs GR8 :$dst), (ins i8imm :$src),
893 "mov{b}\t{$src, $dst|$dst, $src}",
894 [(set GR8:$dst, imm:$src)]>;
895 def MOV16ri : Ii16<0xB8, AddRegFrm, (outs GR16:$dst), (ins i16imm:$src),
896 "mov{w}\t{$src, $dst|$dst, $src}",
897 [(set GR16:$dst, imm:$src)]>, OpSize;
898 def MOV32ri : Ii32<0xB8, AddRegFrm, (outs GR32:$dst), (ins i32imm:$src),
899 "mov{l}\t{$src, $dst|$dst, $src}",
900 [(set GR32:$dst, imm:$src)]>;
901 def MOV64ri : RIi64<0xB8, AddRegFrm, (outs GR64:$dst), (ins i64imm:$src),
902 "movabs{q}\t{$src, $dst|$dst, $src}",
903 [(set GR64:$dst, imm:$src)]>;
904 def MOV64ri32 : RIi32<0xC7, MRM0r, (outs GR64:$dst), (ins i64i32imm:$src),
905 "mov{q}\t{$src, $dst|$dst, $src}",
906 [(set GR64:$dst, i64immSExt32:$src)]>;
909 def MOV8mi : Ii8 <0xC6, MRM0m, (outs), (ins i8mem :$dst, i8imm :$src),
910 "mov{b}\t{$src, $dst|$dst, $src}",
911 [(store (i8 imm:$src), addr:$dst)]>;
912 def MOV16mi : Ii16<0xC7, MRM0m, (outs), (ins i16mem:$dst, i16imm:$src),
913 "mov{w}\t{$src, $dst|$dst, $src}",
914 [(store (i16 imm:$src), addr:$dst)]>, OpSize;
915 def MOV32mi : Ii32<0xC7, MRM0m, (outs), (ins i32mem:$dst, i32imm:$src),
916 "mov{l}\t{$src, $dst|$dst, $src}",
917 [(store (i32 imm:$src), addr:$dst)]>;
918 def MOV64mi32 : RIi32<0xC7, MRM0m, (outs), (ins i64mem:$dst, i64i32imm:$src),
919 "mov{q}\t{$src, $dst|$dst, $src}",
920 [(store i64immSExt32:$src, addr:$dst)]>;
922 /// moffs8, moffs16 and moffs32 versions of moves. The immediate is a
923 /// 32-bit offset from the PC. These are only valid in x86-32 mode.
924 def MOV8o8a : Ii32 <0xA0, RawFrm, (outs), (ins offset8:$src),
925 "mov{b}\t{$src, %al|AL, $src}", []>,
926 Requires<[In32BitMode]>;
927 def MOV16o16a : Ii32 <0xA1, RawFrm, (outs), (ins offset16:$src),
928 "mov{w}\t{$src, %ax|AL, $src}", []>, OpSize,
929 Requires<[In32BitMode]>;
930 def MOV32o32a : Ii32 <0xA1, RawFrm, (outs), (ins offset32:$src),
931 "mov{l}\t{$src, %eax|EAX, $src}", []>,
932 Requires<[In32BitMode]>;
933 def MOV8ao8 : Ii32 <0xA2, RawFrm, (outs offset8:$dst), (ins),
934 "mov{b}\t{%al, $dst|$dst, AL}", []>,
935 Requires<[In32BitMode]>;
936 def MOV16ao16 : Ii32 <0xA3, RawFrm, (outs offset16:$dst), (ins),
937 "mov{w}\t{%ax, $dst|$dst, AL}", []>, OpSize,
938 Requires<[In32BitMode]>;
939 def MOV32ao32 : Ii32 <0xA3, RawFrm, (outs offset32:$dst), (ins),
940 "mov{l}\t{%eax, $dst|$dst, EAX}", []>,
941 Requires<[In32BitMode]>;
943 // FIXME: These definitions are utterly broken
944 // Just leave them commented out for now because they're useless outside
945 // of the large code model, and most compilers won't generate the instructions
948 def MOV64o8a : RIi8<0xA0, RawFrm, (outs), (ins offset8:$src),
949 "mov{q}\t{$src, %rax|RAX, $src}", []>;
950 def MOV64o64a : RIi32<0xA1, RawFrm, (outs), (ins offset64:$src),
951 "mov{q}\t{$src, %rax|RAX, $src}", []>;
952 def MOV64ao8 : RIi8<0xA2, RawFrm, (outs offset8:$dst), (ins),
953 "mov{q}\t{%rax, $dst|$dst, RAX}", []>;
954 def MOV64ao64 : RIi32<0xA3, RawFrm, (outs offset64:$dst), (ins),
955 "mov{q}\t{%rax, $dst|$dst, RAX}", []>;
959 let isCodeGenOnly = 1 in {
960 def MOV8rr_REV : I<0x8A, MRMSrcReg, (outs GR8:$dst), (ins GR8:$src),
961 "mov{b}\t{$src, $dst|$dst, $src}", []>;
962 def MOV16rr_REV : I<0x8B, MRMSrcReg, (outs GR16:$dst), (ins GR16:$src),
963 "mov{w}\t{$src, $dst|$dst, $src}", []>, OpSize;
964 def MOV32rr_REV : I<0x8B, MRMSrcReg, (outs GR32:$dst), (ins GR32:$src),
965 "mov{l}\t{$src, $dst|$dst, $src}", []>;
966 def MOV64rr_REV : RI<0x8B, MRMSrcReg, (outs GR64:$dst), (ins GR64:$src),
967 "mov{q}\t{$src, $dst|$dst, $src}", []>;
970 let canFoldAsLoad = 1, isReMaterializable = 1 in {
971 def MOV8rm : I<0x8A, MRMSrcMem, (outs GR8 :$dst), (ins i8mem :$src),
972 "mov{b}\t{$src, $dst|$dst, $src}",
973 [(set GR8:$dst, (loadi8 addr:$src))]>;
974 def MOV16rm : I<0x8B, MRMSrcMem, (outs GR16:$dst), (ins i16mem:$src),
975 "mov{w}\t{$src, $dst|$dst, $src}",
976 [(set GR16:$dst, (loadi16 addr:$src))]>, OpSize;
977 def MOV32rm : I<0x8B, MRMSrcMem, (outs GR32:$dst), (ins i32mem:$src),
978 "mov{l}\t{$src, $dst|$dst, $src}",
979 [(set GR32:$dst, (loadi32 addr:$src))]>;
980 def MOV64rm : RI<0x8B, MRMSrcMem, (outs GR64:$dst), (ins i64mem:$src),
981 "mov{q}\t{$src, $dst|$dst, $src}",
982 [(set GR64:$dst, (load addr:$src))]>;
985 def MOV8mr : I<0x88, MRMDestMem, (outs), (ins i8mem :$dst, GR8 :$src),
986 "mov{b}\t{$src, $dst|$dst, $src}",
987 [(store GR8:$src, addr:$dst)]>;
988 def MOV16mr : I<0x89, MRMDestMem, (outs), (ins i16mem:$dst, GR16:$src),
989 "mov{w}\t{$src, $dst|$dst, $src}",
990 [(store GR16:$src, addr:$dst)]>, OpSize;
991 def MOV32mr : I<0x89, MRMDestMem, (outs), (ins i32mem:$dst, GR32:$src),
992 "mov{l}\t{$src, $dst|$dst, $src}",
993 [(store GR32:$src, addr:$dst)]>;
994 def MOV64mr : RI<0x89, MRMDestMem, (outs), (ins i64mem:$dst, GR64:$src),
995 "mov{q}\t{$src, $dst|$dst, $src}",
996 [(store GR64:$src, addr:$dst)]>;
998 // Versions of MOV8rr, MOV8mr, and MOV8rm that use i8mem_NOREX and GR8_NOREX so
999 // that they can be used for copying and storing h registers, which can't be
1000 // encoded when a REX prefix is present.
1001 let isCodeGenOnly = 1 in {
1002 let neverHasSideEffects = 1 in
1003 def MOV8rr_NOREX : I<0x88, MRMDestReg,
1004 (outs GR8_NOREX:$dst), (ins GR8_NOREX:$src),
1005 "mov{b}\t{$src, $dst|$dst, $src} # NOREX", []>;
1007 def MOV8mr_NOREX : I<0x88, MRMDestMem,
1008 (outs), (ins i8mem_NOREX:$dst, GR8_NOREX:$src),
1009 "mov{b}\t{$src, $dst|$dst, $src} # NOREX", []>;
1010 let mayLoad = 1, neverHasSideEffects = 1,
1011 canFoldAsLoad = 1, isReMaterializable = 1 in
1012 def MOV8rm_NOREX : I<0x8A, MRMSrcMem,
1013 (outs GR8_NOREX:$dst), (ins i8mem_NOREX:$src),
1014 "mov{b}\t{$src, $dst|$dst, $src} # NOREX", []>;
1018 // Condition code ops, incl. set if equal/not equal/...
1019 let Defs = [EFLAGS], Uses = [AH], neverHasSideEffects = 1 in
1020 def SAHF : I<0x9E, RawFrm, (outs), (ins), "sahf", []>; // flags = AH
1021 let Defs = [AH], Uses = [EFLAGS], neverHasSideEffects = 1 in
1022 def LAHF : I<0x9F, RawFrm, (outs), (ins), "lahf", []>; // AH = flags
1025 //===----------------------------------------------------------------------===//
1026 // Bit tests instructions: BT, BTS, BTR, BTC.
1028 let Defs = [EFLAGS] in {
1029 def BT16rr : I<0xA3, MRMDestReg, (outs), (ins GR16:$src1, GR16:$src2),
1030 "bt{w}\t{$src2, $src1|$src1, $src2}",
1031 [(set EFLAGS, (X86bt GR16:$src1, GR16:$src2))]>, OpSize, TB;
1032 def BT32rr : I<0xA3, MRMDestReg, (outs), (ins GR32:$src1, GR32:$src2),
1033 "bt{l}\t{$src2, $src1|$src1, $src2}",
1034 [(set EFLAGS, (X86bt GR32:$src1, GR32:$src2))]>, TB;
1035 def BT64rr : RI<0xA3, MRMDestReg, (outs), (ins GR64:$src1, GR64:$src2),
1036 "bt{q}\t{$src2, $src1|$src1, $src2}",
1037 [(set EFLAGS, (X86bt GR64:$src1, GR64:$src2))]>, TB;
1039 // Unlike with the register+register form, the memory+register form of the
1040 // bt instruction does not ignore the high bits of the index. From ISel's
1041 // perspective, this is pretty bizarre. Make these instructions disassembly
1044 def BT16mr : I<0xA3, MRMDestMem, (outs), (ins i16mem:$src1, GR16:$src2),
1045 "bt{w}\t{$src2, $src1|$src1, $src2}",
1046 // [(X86bt (loadi16 addr:$src1), GR16:$src2),
1047 // (implicit EFLAGS)]
1049 >, OpSize, TB, Requires<[FastBTMem]>;
1050 def BT32mr : I<0xA3, MRMDestMem, (outs), (ins i32mem:$src1, GR32:$src2),
1051 "bt{l}\t{$src2, $src1|$src1, $src2}",
1052 // [(X86bt (loadi32 addr:$src1), GR32:$src2),
1053 // (implicit EFLAGS)]
1055 >, TB, Requires<[FastBTMem]>;
1056 def BT64mr : RI<0xA3, MRMDestMem, (outs), (ins i64mem:$src1, GR64:$src2),
1057 "bt{q}\t{$src2, $src1|$src1, $src2}",
1058 // [(X86bt (loadi64 addr:$src1), GR64:$src2),
1059 // (implicit EFLAGS)]
1063 def BT16ri8 : Ii8<0xBA, MRM4r, (outs), (ins GR16:$src1, i16i8imm:$src2),
1064 "bt{w}\t{$src2, $src1|$src1, $src2}",
1065 [(set EFLAGS, (X86bt GR16:$src1, i16immSExt8:$src2))]>,
1067 def BT32ri8 : Ii8<0xBA, MRM4r, (outs), (ins GR32:$src1, i32i8imm:$src2),
1068 "bt{l}\t{$src2, $src1|$src1, $src2}",
1069 [(set EFLAGS, (X86bt GR32:$src1, i32immSExt8:$src2))]>, TB;
1070 def BT64ri8 : RIi8<0xBA, MRM4r, (outs), (ins GR64:$src1, i64i8imm:$src2),
1071 "bt{q}\t{$src2, $src1|$src1, $src2}",
1072 [(set EFLAGS, (X86bt GR64:$src1, i64immSExt8:$src2))]>, TB;
1074 // Note that these instructions don't need FastBTMem because that
1075 // only applies when the other operand is in a register. When it's
1076 // an immediate, bt is still fast.
1077 def BT16mi8 : Ii8<0xBA, MRM4m, (outs), (ins i16mem:$src1, i16i8imm:$src2),
1078 "bt{w}\t{$src2, $src1|$src1, $src2}",
1079 [(set EFLAGS, (X86bt (loadi16 addr:$src1), i16immSExt8:$src2))
1081 def BT32mi8 : Ii8<0xBA, MRM4m, (outs), (ins i32mem:$src1, i32i8imm:$src2),
1082 "bt{l}\t{$src2, $src1|$src1, $src2}",
1083 [(set EFLAGS, (X86bt (loadi32 addr:$src1), i32immSExt8:$src2))
1085 def BT64mi8 : RIi8<0xBA, MRM4m, (outs), (ins i64mem:$src1, i64i8imm:$src2),
1086 "bt{q}\t{$src2, $src1|$src1, $src2}",
1087 [(set EFLAGS, (X86bt (loadi64 addr:$src1),
1088 i64immSExt8:$src2))]>, TB;
1091 def BTC16rr : I<0xBB, MRMDestReg, (outs), (ins GR16:$src1, GR16:$src2),
1092 "btc{w}\t{$src2, $src1|$src1, $src2}", []>, OpSize, TB;
1093 def BTC32rr : I<0xBB, MRMDestReg, (outs), (ins GR32:$src1, GR32:$src2),
1094 "btc{l}\t{$src2, $src1|$src1, $src2}", []>, TB;
1095 def BTC64rr : RI<0xBB, MRMDestReg, (outs), (ins GR64:$src1, GR64:$src2),
1096 "btc{q}\t{$src2, $src1|$src1, $src2}", []>, TB;
1097 def BTC16mr : I<0xBB, MRMDestMem, (outs), (ins i16mem:$src1, GR16:$src2),
1098 "btc{w}\t{$src2, $src1|$src1, $src2}", []>, OpSize, TB;
1099 def BTC32mr : I<0xBB, MRMDestMem, (outs), (ins i32mem:$src1, GR32:$src2),
1100 "btc{l}\t{$src2, $src1|$src1, $src2}", []>, TB;
1101 def BTC64mr : RI<0xBB, MRMDestMem, (outs), (ins i64mem:$src1, GR64:$src2),
1102 "btc{q}\t{$src2, $src1|$src1, $src2}", []>, TB;
1103 def BTC16ri8 : Ii8<0xBA, MRM7r, (outs), (ins GR16:$src1, i16i8imm:$src2),
1104 "btc{w}\t{$src2, $src1|$src1, $src2}", []>, OpSize, TB;
1105 def BTC32ri8 : Ii8<0xBA, MRM7r, (outs), (ins GR32:$src1, i32i8imm:$src2),
1106 "btc{l}\t{$src2, $src1|$src1, $src2}", []>, TB;
1107 def BTC64ri8 : RIi8<0xBA, MRM7r, (outs), (ins GR64:$src1, i64i8imm:$src2),
1108 "btc{q}\t{$src2, $src1|$src1, $src2}", []>, TB;
1109 def BTC16mi8 : Ii8<0xBA, MRM7m, (outs), (ins i16mem:$src1, i16i8imm:$src2),
1110 "btc{w}\t{$src2, $src1|$src1, $src2}", []>, OpSize, TB;
1111 def BTC32mi8 : Ii8<0xBA, MRM7m, (outs), (ins i32mem:$src1, i32i8imm:$src2),
1112 "btc{l}\t{$src2, $src1|$src1, $src2}", []>, TB;
1113 def BTC64mi8 : RIi8<0xBA, MRM7m, (outs), (ins i64mem:$src1, i64i8imm:$src2),
1114 "btc{q}\t{$src2, $src1|$src1, $src2}", []>, TB;
1116 def BTR16rr : I<0xB3, MRMDestReg, (outs), (ins GR16:$src1, GR16:$src2),
1117 "btr{w}\t{$src2, $src1|$src1, $src2}", []>, OpSize, TB;
1118 def BTR32rr : I<0xB3, MRMDestReg, (outs), (ins GR32:$src1, GR32:$src2),
1119 "btr{l}\t{$src2, $src1|$src1, $src2}", []>, TB;
1120 def BTR64rr : RI<0xB3, MRMDestReg, (outs), (ins GR64:$src1, GR64:$src2),
1121 "btr{q}\t{$src2, $src1|$src1, $src2}", []>, TB;
1122 def BTR16mr : I<0xB3, MRMDestMem, (outs), (ins i16mem:$src1, GR16:$src2),
1123 "btr{w}\t{$src2, $src1|$src1, $src2}", []>, OpSize, TB;
1124 def BTR32mr : I<0xB3, MRMDestMem, (outs), (ins i32mem:$src1, GR32:$src2),
1125 "btr{l}\t{$src2, $src1|$src1, $src2}", []>, TB;
1126 def BTR64mr : RI<0xB3, MRMDestMem, (outs), (ins i64mem:$src1, GR64:$src2),
1127 "btr{q}\t{$src2, $src1|$src1, $src2}", []>, TB;
1128 def BTR16ri8 : Ii8<0xBA, MRM6r, (outs), (ins GR16:$src1, i16i8imm:$src2),
1129 "btr{w}\t{$src2, $src1|$src1, $src2}", []>, OpSize, TB;
1130 def BTR32ri8 : Ii8<0xBA, MRM6r, (outs), (ins GR32:$src1, i32i8imm:$src2),
1131 "btr{l}\t{$src2, $src1|$src1, $src2}", []>, TB;
1132 def BTR64ri8 : RIi8<0xBA, MRM6r, (outs), (ins GR64:$src1, i64i8imm:$src2),
1133 "btr{q}\t{$src2, $src1|$src1, $src2}", []>, TB;
1134 def BTR16mi8 : Ii8<0xBA, MRM6m, (outs), (ins i16mem:$src1, i16i8imm:$src2),
1135 "btr{w}\t{$src2, $src1|$src1, $src2}", []>, OpSize, TB;
1136 def BTR32mi8 : Ii8<0xBA, MRM6m, (outs), (ins i32mem:$src1, i32i8imm:$src2),
1137 "btr{l}\t{$src2, $src1|$src1, $src2}", []>, TB;
1138 def BTR64mi8 : RIi8<0xBA, MRM6m, (outs), (ins i64mem:$src1, i64i8imm:$src2),
1139 "btr{q}\t{$src2, $src1|$src1, $src2}", []>, TB;
1141 def BTS16rr : I<0xAB, MRMDestReg, (outs), (ins GR16:$src1, GR16:$src2),
1142 "bts{w}\t{$src2, $src1|$src1, $src2}", []>, OpSize, TB;
1143 def BTS32rr : I<0xAB, MRMDestReg, (outs), (ins GR32:$src1, GR32:$src2),
1144 "bts{l}\t{$src2, $src1|$src1, $src2}", []>, TB;
1145 def BTS64rr : RI<0xAB, MRMDestReg, (outs), (ins GR64:$src1, GR64:$src2),
1146 "bts{q}\t{$src2, $src1|$src1, $src2}", []>, TB;
1147 def BTS16mr : I<0xAB, MRMDestMem, (outs), (ins i16mem:$src1, GR16:$src2),
1148 "bts{w}\t{$src2, $src1|$src1, $src2}", []>, OpSize, TB;
1149 def BTS32mr : I<0xAB, MRMDestMem, (outs), (ins i32mem:$src1, GR32:$src2),
1150 "bts{l}\t{$src2, $src1|$src1, $src2}", []>, TB;
1151 def BTS64mr : RI<0xAB, MRMDestMem, (outs), (ins i64mem:$src1, GR64:$src2),
1152 "bts{q}\t{$src2, $src1|$src1, $src2}", []>, TB;
1153 def BTS16ri8 : Ii8<0xBA, MRM5r, (outs), (ins GR16:$src1, i16i8imm:$src2),
1154 "bts{w}\t{$src2, $src1|$src1, $src2}", []>, OpSize, TB;
1155 def BTS32ri8 : Ii8<0xBA, MRM5r, (outs), (ins GR32:$src1, i32i8imm:$src2),
1156 "bts{l}\t{$src2, $src1|$src1, $src2}", []>, TB;
1157 def BTS64ri8 : RIi8<0xBA, MRM5r, (outs), (ins GR64:$src1, i64i8imm:$src2),
1158 "bts{q}\t{$src2, $src1|$src1, $src2}", []>, TB;
1159 def BTS16mi8 : Ii8<0xBA, MRM5m, (outs), (ins i16mem:$src1, i16i8imm:$src2),
1160 "bts{w}\t{$src2, $src1|$src1, $src2}", []>, OpSize, TB;
1161 def BTS32mi8 : Ii8<0xBA, MRM5m, (outs), (ins i32mem:$src1, i32i8imm:$src2),
1162 "bts{l}\t{$src2, $src1|$src1, $src2}", []>, TB;
1163 def BTS64mi8 : RIi8<0xBA, MRM5m, (outs), (ins i64mem:$src1, i64i8imm:$src2),
1164 "bts{q}\t{$src2, $src1|$src1, $src2}", []>, TB;
1165 } // Defs = [EFLAGS]
1168 //===----------------------------------------------------------------------===//
1173 // Atomic swap. These are just normal xchg instructions. But since a memory
1174 // operand is referenced, the atomicity is ensured.
1175 let Constraints = "$val = $dst" in {
1176 def XCHG8rm : I<0x86, MRMSrcMem, (outs GR8:$dst), (ins GR8:$val, i8mem:$ptr),
1177 "xchg{b}\t{$val, $ptr|$ptr, $val}",
1178 [(set GR8:$dst, (atomic_swap_8 addr:$ptr, GR8:$val))]>;
1179 def XCHG16rm : I<0x87, MRMSrcMem, (outs GR16:$dst),(ins GR16:$val, i16mem:$ptr),
1180 "xchg{w}\t{$val, $ptr|$ptr, $val}",
1181 [(set GR16:$dst, (atomic_swap_16 addr:$ptr, GR16:$val))]>,
1183 def XCHG32rm : I<0x87, MRMSrcMem, (outs GR32:$dst),(ins GR32:$val, i32mem:$ptr),
1184 "xchg{l}\t{$val, $ptr|$ptr, $val}",
1185 [(set GR32:$dst, (atomic_swap_32 addr:$ptr, GR32:$val))]>;
1186 def XCHG64rm : RI<0x87, MRMSrcMem, (outs GR64:$dst),(ins GR64:$val,i64mem:$ptr),
1187 "xchg{q}\t{$val, $ptr|$ptr, $val}",
1188 [(set GR64:$dst, (atomic_swap_64 addr:$ptr, GR64:$val))]>;
1190 def XCHG8rr : I<0x86, MRMSrcReg, (outs GR8:$dst), (ins GR8:$val, GR8:$src),
1191 "xchg{b}\t{$val, $src|$src, $val}", []>;
1192 def XCHG16rr : I<0x87, MRMSrcReg, (outs GR16:$dst), (ins GR16:$val, GR16:$src),
1193 "xchg{w}\t{$val, $src|$src, $val}", []>, OpSize;
1194 def XCHG32rr : I<0x87, MRMSrcReg, (outs GR32:$dst), (ins GR32:$val, GR32:$src),
1195 "xchg{l}\t{$val, $src|$src, $val}", []>;
1196 def XCHG64rr : RI<0x87, MRMSrcReg, (outs GR64:$dst), (ins GR64:$val,GR64:$src),
1197 "xchg{q}\t{$val, $src|$src, $val}", []>;
1200 def XCHG16ar : I<0x90, AddRegFrm, (outs), (ins GR16:$src),
1201 "xchg{w}\t{$src, %ax|AX, $src}", []>, OpSize;
1202 def XCHG32ar : I<0x90, AddRegFrm, (outs), (ins GR32:$src),
1203 "xchg{l}\t{$src, %eax|EAX, $src}", []>, Requires<[In32BitMode]>;
1204 // Uses GR32_NOAX in 64-bit mode to prevent encoding using the 0x90 NOP encoding.
1205 // xchg %eax, %eax needs to clear upper 32-bits of RAX so is not a NOP.
1206 def XCHG32ar64 : I<0x90, AddRegFrm, (outs), (ins GR32_NOAX:$src),
1207 "xchg{l}\t{$src, %eax|EAX, $src}", []>, Requires<[In64BitMode]>;
1208 def XCHG64ar : RI<0x90, AddRegFrm, (outs), (ins GR64:$src),
1209 "xchg{q}\t{$src, %rax|RAX, $src}", []>;
1213 def XADD8rr : I<0xC0, MRMDestReg, (outs GR8:$dst), (ins GR8:$src),
1214 "xadd{b}\t{$src, $dst|$dst, $src}", []>, TB;
1215 def XADD16rr : I<0xC1, MRMDestReg, (outs GR16:$dst), (ins GR16:$src),
1216 "xadd{w}\t{$src, $dst|$dst, $src}", []>, TB, OpSize;
1217 def XADD32rr : I<0xC1, MRMDestReg, (outs GR32:$dst), (ins GR32:$src),
1218 "xadd{l}\t{$src, $dst|$dst, $src}", []>, TB;
1219 def XADD64rr : RI<0xC1, MRMDestReg, (outs GR64:$dst), (ins GR64:$src),
1220 "xadd{q}\t{$src, $dst|$dst, $src}", []>, TB;
1222 let mayLoad = 1, mayStore = 1 in {
1223 def XADD8rm : I<0xC0, MRMDestMem, (outs), (ins i8mem:$dst, GR8:$src),
1224 "xadd{b}\t{$src, $dst|$dst, $src}", []>, TB;
1225 def XADD16rm : I<0xC1, MRMDestMem, (outs), (ins i16mem:$dst, GR16:$src),
1226 "xadd{w}\t{$src, $dst|$dst, $src}", []>, TB, OpSize;
1227 def XADD32rm : I<0xC1, MRMDestMem, (outs), (ins i32mem:$dst, GR32:$src),
1228 "xadd{l}\t{$src, $dst|$dst, $src}", []>, TB;
1229 def XADD64rm : RI<0xC1, MRMDestMem, (outs), (ins i64mem:$dst, GR64:$src),
1230 "xadd{q}\t{$src, $dst|$dst, $src}", []>, TB;
1234 def CMPXCHG8rr : I<0xB0, MRMDestReg, (outs GR8:$dst), (ins GR8:$src),
1235 "cmpxchg{b}\t{$src, $dst|$dst, $src}", []>, TB;
1236 def CMPXCHG16rr : I<0xB1, MRMDestReg, (outs GR16:$dst), (ins GR16:$src),
1237 "cmpxchg{w}\t{$src, $dst|$dst, $src}", []>, TB, OpSize;
1238 def CMPXCHG32rr : I<0xB1, MRMDestReg, (outs GR32:$dst), (ins GR32:$src),
1239 "cmpxchg{l}\t{$src, $dst|$dst, $src}", []>, TB;
1240 def CMPXCHG64rr : RI<0xB1, MRMDestReg, (outs GR64:$dst), (ins GR64:$src),
1241 "cmpxchg{q}\t{$src, $dst|$dst, $src}", []>, TB;
1243 let mayLoad = 1, mayStore = 1 in {
1244 def CMPXCHG8rm : I<0xB0, MRMDestMem, (outs), (ins i8mem:$dst, GR8:$src),
1245 "cmpxchg{b}\t{$src, $dst|$dst, $src}", []>, TB;
1246 def CMPXCHG16rm : I<0xB1, MRMDestMem, (outs), (ins i16mem:$dst, GR16:$src),
1247 "cmpxchg{w}\t{$src, $dst|$dst, $src}", []>, TB, OpSize;
1248 def CMPXCHG32rm : I<0xB1, MRMDestMem, (outs), (ins i32mem:$dst, GR32:$src),
1249 "cmpxchg{l}\t{$src, $dst|$dst, $src}", []>, TB;
1250 def CMPXCHG64rm : RI<0xB1, MRMDestMem, (outs), (ins i64mem:$dst, GR64:$src),
1251 "cmpxchg{q}\t{$src, $dst|$dst, $src}", []>, TB;
1254 let Defs = [EAX, EDX, EFLAGS], Uses = [EAX, EBX, ECX, EDX] in
1255 def CMPXCHG8B : I<0xC7, MRM1m, (outs), (ins i64mem:$dst),
1256 "cmpxchg8b\t$dst", []>, TB;
1258 let Defs = [RAX, RDX, EFLAGS], Uses = [RAX, RBX, RCX, RDX] in
1259 def CMPXCHG16B : RI<0xC7, MRM1m, (outs), (ins i128mem:$dst),
1260 "cmpxchg16b\t$dst", []>, TB, Requires<[HasCmpxchg16b]>;
1264 // Lock instruction prefix
1265 def LOCK_PREFIX : I<0xF0, RawFrm, (outs), (ins), "lock", []>;
1267 // Rex64 instruction prefix
1268 def REX64_PREFIX : I<0x48, RawFrm, (outs), (ins), "rex64", []>;
1270 // Data16 instruction prefix
1271 def DATA16_PREFIX : I<0x66, RawFrm, (outs), (ins), "data16", []>;
1273 // Repeat string operation instruction prefixes
1274 // These uses the DF flag in the EFLAGS register to inc or dec ECX
1275 let Defs = [ECX], Uses = [ECX,EFLAGS] in {
1276 // Repeat (used with INS, OUTS, MOVS, LODS and STOS)
1277 def REP_PREFIX : I<0xF3, RawFrm, (outs), (ins), "rep", []>;
1278 // Repeat while not equal (used with CMPS and SCAS)
1279 def REPNE_PREFIX : I<0xF2, RawFrm, (outs), (ins), "repne", []>;
1283 // String manipulation instructions
1284 def LODSB : I<0xAC, RawFrm, (outs), (ins), "lodsb", []>;
1285 def LODSW : I<0xAD, RawFrm, (outs), (ins), "lodsw", []>, OpSize;
1286 def LODSD : I<0xAD, RawFrm, (outs), (ins), "lods{l|d}", []>;
1287 def LODSQ : RI<0xAD, RawFrm, (outs), (ins), "lodsq", []>;
1289 def OUTSB : I<0x6E, RawFrm, (outs), (ins), "outsb", []>;
1290 def OUTSW : I<0x6F, RawFrm, (outs), (ins), "outsw", []>, OpSize;
1291 def OUTSD : I<0x6F, RawFrm, (outs), (ins), "outs{l|d}", []>;
1294 // Flag instructions
1295 def CLC : I<0xF8, RawFrm, (outs), (ins), "clc", []>;
1296 def STC : I<0xF9, RawFrm, (outs), (ins), "stc", []>;
1297 def CLI : I<0xFA, RawFrm, (outs), (ins), "cli", []>;
1298 def STI : I<0xFB, RawFrm, (outs), (ins), "sti", []>;
1299 def CLD : I<0xFC, RawFrm, (outs), (ins), "cld", []>;
1300 def STD : I<0xFD, RawFrm, (outs), (ins), "std", []>;
1301 def CMC : I<0xF5, RawFrm, (outs), (ins), "cmc", []>;
1303 def CLTS : I<0x06, RawFrm, (outs), (ins), "clts", []>, TB;
1305 // Table lookup instructions
1306 def XLAT : I<0xD7, RawFrm, (outs), (ins), "xlatb", []>;
1308 // ASCII Adjust After Addition
1309 // sets AL, AH and CF and AF of EFLAGS and uses AL and AF of EFLAGS
1310 def AAA : I<0x37, RawFrm, (outs), (ins), "aaa", []>, Requires<[In32BitMode]>;
1312 // ASCII Adjust AX Before Division
1313 // sets AL, AH and EFLAGS and uses AL and AH
1314 def AAD8i8 : Ii8<0xD5, RawFrm, (outs), (ins i8imm:$src),
1315 "aad\t$src", []>, Requires<[In32BitMode]>;
1317 // ASCII Adjust AX After Multiply
1318 // sets AL, AH and EFLAGS and uses AL
1319 def AAM8i8 : Ii8<0xD4, RawFrm, (outs), (ins i8imm:$src),
1320 "aam\t$src", []>, Requires<[In32BitMode]>;
1322 // ASCII Adjust AL After Subtraction - sets
1323 // sets AL, AH and CF and AF of EFLAGS and uses AL and AF of EFLAGS
1324 def AAS : I<0x3F, RawFrm, (outs), (ins), "aas", []>, Requires<[In32BitMode]>;
1326 // Decimal Adjust AL after Addition
1327 // sets AL, CF and AF of EFLAGS and uses AL, CF and AF of EFLAGS
1328 def DAA : I<0x27, RawFrm, (outs), (ins), "daa", []>, Requires<[In32BitMode]>;
1330 // Decimal Adjust AL after Subtraction
1331 // sets AL, CF and AF of EFLAGS and uses AL, CF and AF of EFLAGS
1332 def DAS : I<0x2F, RawFrm, (outs), (ins), "das", []>, Requires<[In32BitMode]>;
1334 // Check Array Index Against Bounds
1335 def BOUNDS16rm : I<0x62, MRMSrcMem, (outs GR16:$dst), (ins i16mem:$src),
1336 "bound\t{$src, $dst|$dst, $src}", []>, OpSize,
1337 Requires<[In32BitMode]>;
1338 def BOUNDS32rm : I<0x62, MRMSrcMem, (outs GR32:$dst), (ins i32mem:$src),
1339 "bound\t{$src, $dst|$dst, $src}", []>,
1340 Requires<[In32BitMode]>;
1342 // Adjust RPL Field of Segment Selector
1343 def ARPL16rr : I<0x63, MRMDestReg, (outs GR16:$src), (ins GR16:$dst),
1344 "arpl\t{$src, $dst|$dst, $src}", []>, Requires<[In32BitMode]>;
1345 def ARPL16mr : I<0x63, MRMSrcMem, (outs GR16:$src), (ins i16mem:$dst),
1346 "arpl\t{$src, $dst|$dst, $src}", []>, Requires<[In32BitMode]>;
1348 //===----------------------------------------------------------------------===//
1349 // MOVBE Instructions
1351 let Predicates = [HasMOVBE] in {
1352 def MOVBE16rm : I<0xF0, MRMSrcMem, (outs GR16:$dst), (ins i16mem:$src),
1353 "movbe{w}\t{$src, $dst|$dst, $src}",
1354 [(set GR16:$dst, (bswap (loadi16 addr:$src)))]>, OpSize, T8;
1355 def MOVBE32rm : I<0xF0, MRMSrcMem, (outs GR32:$dst), (ins i32mem:$src),
1356 "movbe{l}\t{$src, $dst|$dst, $src}",
1357 [(set GR32:$dst, (bswap (loadi32 addr:$src)))]>, T8;
1358 def MOVBE64rm : RI<0xF0, MRMSrcMem, (outs GR64:$dst), (ins i64mem:$src),
1359 "movbe{q}\t{$src, $dst|$dst, $src}",
1360 [(set GR64:$dst, (bswap (loadi64 addr:$src)))]>, T8;
1361 def MOVBE16mr : I<0xF1, MRMDestMem, (outs), (ins i16mem:$dst, GR16:$src),
1362 "movbe{w}\t{$src, $dst|$dst, $src}",
1363 [(store (bswap GR16:$src), addr:$dst)]>, OpSize, T8;
1364 def MOVBE32mr : I<0xF1, MRMDestMem, (outs), (ins i32mem:$dst, GR32:$src),
1365 "movbe{l}\t{$src, $dst|$dst, $src}",
1366 [(store (bswap GR32:$src), addr:$dst)]>, T8;
1367 def MOVBE64mr : RI<0xF1, MRMDestMem, (outs), (ins i64mem:$dst, GR64:$src),
1368 "movbe{q}\t{$src, $dst|$dst, $src}",
1369 [(store (bswap GR64:$src), addr:$dst)]>, T8;
1372 //===----------------------------------------------------------------------===//
1373 // RDRAND Instruction
1375 let Predicates = [HasRDRAND], Defs = [EFLAGS] in {
1376 def RDRAND16r : I<0xC7, MRM6r, (outs GR16:$dst), (ins),
1377 "rdrand{w}\t$dst", []>, OpSize, TB;
1378 def RDRAND32r : I<0xC7, MRM6r, (outs GR32:$dst), (ins),
1379 "rdrand{l}\t$dst", []>, TB;
1380 def RDRAND64r : RI<0xC7, MRM6r, (outs GR64:$dst), (ins),
1381 "rdrand{q}\t$dst", []>, TB;
1384 //===----------------------------------------------------------------------===//
1385 // LZCNT Instruction
1387 let Predicates = [HasLZCNT], Defs = [EFLAGS] in {
1388 def LZCNT16rr : I<0xBD, MRMSrcReg, (outs GR16:$dst), (ins GR16:$src),
1389 "lzcnt{w}\t{$src, $dst|$dst, $src}",
1390 [(set GR16:$dst, (ctlz GR16:$src)), (implicit EFLAGS)]>, XS,
1392 def LZCNT16rm : I<0xBD, MRMSrcMem, (outs GR16:$dst), (ins i16mem:$src),
1393 "lzcnt{w}\t{$src, $dst|$dst, $src}",
1394 [(set GR16:$dst, (ctlz (loadi16 addr:$src))),
1395 (implicit EFLAGS)]>, XS, OpSize;
1397 def LZCNT32rr : I<0xBD, MRMSrcReg, (outs GR32:$dst), (ins GR32:$src),
1398 "lzcnt{l}\t{$src, $dst|$dst, $src}",
1399 [(set GR32:$dst, (ctlz GR32:$src)), (implicit EFLAGS)]>, XS;
1400 def LZCNT32rm : I<0xBD, MRMSrcMem, (outs GR32:$dst), (ins i32mem:$src),
1401 "lzcnt{l}\t{$src, $dst|$dst, $src}",
1402 [(set GR32:$dst, (ctlz (loadi32 addr:$src))),
1403 (implicit EFLAGS)]>, XS;
1405 def LZCNT64rr : RI<0xBD, MRMSrcReg, (outs GR64:$dst), (ins GR64:$src),
1406 "lzcnt{q}\t{$src, $dst|$dst, $src}",
1407 [(set GR64:$dst, (ctlz GR64:$src)), (implicit EFLAGS)]>,
1409 def LZCNT64rm : RI<0xBD, MRMSrcMem, (outs GR64:$dst), (ins i64mem:$src),
1410 "lzcnt{q}\t{$src, $dst|$dst, $src}",
1411 [(set GR64:$dst, (ctlz (loadi64 addr:$src))),
1412 (implicit EFLAGS)]>, XS;
1415 //===----------------------------------------------------------------------===//
1418 let Predicates = [HasBMI], Defs = [EFLAGS] in {
1419 def TZCNT16rr : I<0xBC, MRMSrcReg, (outs GR16:$dst), (ins GR16:$src),
1420 "tzcnt{w}\t{$src, $dst|$dst, $src}",
1421 [(set GR16:$dst, (cttz GR16:$src)), (implicit EFLAGS)]>, XS,
1423 def TZCNT16rm : I<0xBC, MRMSrcMem, (outs GR16:$dst), (ins i16mem:$src),
1424 "tzcnt{w}\t{$src, $dst|$dst, $src}",
1425 [(set GR16:$dst, (cttz (loadi16 addr:$src))),
1426 (implicit EFLAGS)]>, XS, OpSize;
1428 def TZCNT32rr : I<0xBC, MRMSrcReg, (outs GR32:$dst), (ins GR32:$src),
1429 "tzcnt{l}\t{$src, $dst|$dst, $src}",
1430 [(set GR32:$dst, (cttz GR32:$src)), (implicit EFLAGS)]>, XS;
1431 def TZCNT32rm : I<0xBC, MRMSrcMem, (outs GR32:$dst), (ins i32mem:$src),
1432 "tzcnt{l}\t{$src, $dst|$dst, $src}",
1433 [(set GR32:$dst, (cttz (loadi32 addr:$src))),
1434 (implicit EFLAGS)]>, XS;
1436 def TZCNT64rr : RI<0xBC, MRMSrcReg, (outs GR64:$dst), (ins GR64:$src),
1437 "tzcnt{q}\t{$src, $dst|$dst, $src}",
1438 [(set GR64:$dst, (cttz GR64:$src)), (implicit EFLAGS)]>,
1440 def TZCNT64rm : RI<0xBC, MRMSrcMem, (outs GR64:$dst), (ins i64mem:$src),
1441 "tzcnt{q}\t{$src, $dst|$dst, $src}",
1442 [(set GR64:$dst, (cttz (loadi64 addr:$src))),
1443 (implicit EFLAGS)]>, XS;
1446 multiclass bmi_bls<string mnemonic, Format RegMRM, Format MemMRM,
1447 RegisterClass RC, X86MemOperand x86memop, SDNode OpNode,
1449 def rr : I<0xF3, RegMRM, (outs RC:$dst), (ins RC:$src),
1450 !strconcat(mnemonic, "\t{$src, $dst|$dst, $src}"),
1451 [(set RC:$dst, EFLAGS, (OpNode RC:$src))]>, T8, VEX_4V;
1452 def rm : I<0xF3, MemMRM, (outs RC:$dst), (ins x86memop:$src),
1453 !strconcat(mnemonic, "\t{$src, $dst|$dst, $src}"),
1454 [(set RC:$dst, EFLAGS, (OpNode (ld_frag addr:$src)))]>,
1458 let Predicates = [HasBMI], Defs = [EFLAGS] in {
1459 defm BLSR32 : bmi_bls<"blsr{l}", MRM1r, MRM1m, GR32, i32mem,
1460 X86blsr_flag, loadi32>;
1461 defm BLSR64 : bmi_bls<"blsr{q}", MRM1r, MRM1m, GR64, i64mem,
1462 X86blsr_flag, loadi64>, VEX_W;
1463 defm BLSMSK32 : bmi_bls<"blsmsk{l}", MRM2r, MRM2m, GR32, i32mem,
1464 X86blsmsk_flag, loadi32>;
1465 defm BLSMSK64 : bmi_bls<"blsmsk{q}", MRM2r, MRM2m, GR64, i64mem,
1466 X86blsmsk_flag, loadi64>, VEX_W;
1467 defm BLSI32 : bmi_bls<"blsi{l}", MRM3r, MRM3m, GR32, i32mem,
1468 X86blsi_flag, loadi32>;
1469 defm BLSI64 : bmi_bls<"blsi{q}", MRM3r, MRM3m, GR64, i64mem,
1470 X86blsi_flag, loadi64>, VEX_W;
1473 multiclass bmi_bextr_bzhi<bits<8> opc, string mnemonic, RegisterClass RC,
1474 X86MemOperand x86memop, Intrinsic Int,
1476 def rr : I<opc, MRMSrcReg, (outs RC:$dst), (ins RC:$src1, RC:$src2),
1477 !strconcat(mnemonic, "\t{$src2, $src1, $dst|$dst, $src1, $src2}"),
1478 [(set RC:$dst, (Int RC:$src1, RC:$src2)), (implicit EFLAGS)]>,
1480 def rm : I<opc, MRMSrcMem, (outs RC:$dst), (ins x86memop:$src1, RC:$src2),
1481 !strconcat(mnemonic, "\t{$src2, $src1, $dst|$dst, $src1, $src2}"),
1482 [(set RC:$dst, (Int (ld_frag addr:$src1), RC:$src2)),
1483 (implicit EFLAGS)]>, T8, VEX_4VOp3;
1486 let Predicates = [HasBMI], Defs = [EFLAGS] in {
1487 defm BEXTR32 : bmi_bextr_bzhi<0xF7, "bextr{l}", GR32, i32mem,
1488 int_x86_bmi_bextr_32, loadi32>;
1489 defm BEXTR64 : bmi_bextr_bzhi<0xF7, "bextr{q}", GR64, i64mem,
1490 int_x86_bmi_bextr_64, loadi64>, VEX_W;
1493 let Predicates = [HasBMI2], Defs = [EFLAGS] in {
1494 defm BZHI32 : bmi_bextr_bzhi<0xF5, "bzhi{l}", GR32, i32mem,
1495 int_x86_bmi_bzhi_32, loadi32>;
1496 defm BZHI64 : bmi_bextr_bzhi<0xF5, "bzhi{q}", GR64, i64mem,
1497 int_x86_bmi_bzhi_64, loadi64>, VEX_W;
1500 multiclass bmi_pdep_pext<string mnemonic, RegisterClass RC,
1501 X86MemOperand x86memop, Intrinsic Int,
1503 def rr : I<0xF5, MRMSrcReg, (outs RC:$dst), (ins RC:$src1, RC:$src2),
1504 !strconcat(mnemonic, "\t{$src2, $src1, $dst|$dst, $src1, $src2}"),
1505 [(set RC:$dst, (Int RC:$src1, RC:$src2))]>,
1507 def rm : I<0xF5, MRMSrcMem, (outs RC:$dst), (ins RC:$src1, x86memop:$src2),
1508 !strconcat(mnemonic, "\t{$src2, $src1, $dst|$dst, $src1, $src2}"),
1509 [(set RC:$dst, (Int RC:$src1, (ld_frag addr:$src2)))]>, VEX_4V;
1512 let Predicates = [HasBMI2] in {
1513 defm PDEP32 : bmi_pdep_pext<"pdep{l}", GR32, i32mem,
1514 int_x86_bmi_pdep_32, loadi32>, T8XD;
1515 defm PDEP64 : bmi_pdep_pext<"pdep{q}", GR64, i64mem,
1516 int_x86_bmi_pdep_64, loadi64>, T8XD, VEX_W;
1517 defm PEXT32 : bmi_pdep_pext<"pext{l}", GR32, i32mem,
1518 int_x86_bmi_pext_32, loadi32>, T8XS;
1519 defm PEXT64 : bmi_pdep_pext<"pext{q}", GR64, i64mem,
1520 int_x86_bmi_pext_64, loadi64>, T8XS, VEX_W;
1523 //===----------------------------------------------------------------------===//
1525 //===----------------------------------------------------------------------===//
1527 include "X86InstrArithmetic.td"
1528 include "X86InstrCMovSetCC.td"
1529 include "X86InstrExtension.td"
1530 include "X86InstrControl.td"
1531 include "X86InstrShiftRotate.td"
1533 // X87 Floating Point Stack.
1534 include "X86InstrFPStack.td"
1536 // SIMD support (SSE, MMX and AVX)
1537 include "X86InstrFragmentsSIMD.td"
1539 // FMA - Fused Multiply-Add support (requires FMA)
1540 include "X86InstrFMA.td"
1543 include "X86InstrXOP.td"
1545 // SSE, MMX and 3DNow! vector support.
1546 include "X86InstrSSE.td"
1547 include "X86InstrMMX.td"
1548 include "X86Instr3DNow.td"
1550 include "X86InstrVMX.td"
1551 include "X86InstrSVM.td"
1553 // System instructions.
1554 include "X86InstrSystem.td"
1556 // Compiler Pseudo Instructions and Pat Patterns
1557 include "X86InstrCompiler.td"
1559 //===----------------------------------------------------------------------===//
1560 // Assembler Mnemonic Aliases
1561 //===----------------------------------------------------------------------===//
1563 def : MnemonicAlias<"call", "calll">, Requires<[In32BitMode]>;
1564 def : MnemonicAlias<"call", "callq">, Requires<[In64BitMode]>;
1566 def : MnemonicAlias<"cbw", "cbtw">;
1567 def : MnemonicAlias<"cwde", "cwtl">;
1568 def : MnemonicAlias<"cwd", "cwtd">;
1569 def : MnemonicAlias<"cdq", "cltd">;
1570 def : MnemonicAlias<"cdqe", "cltq">;
1571 def : MnemonicAlias<"cqo", "cqto">;
1573 // lret maps to lretl, it is not ambiguous with lretq.
1574 def : MnemonicAlias<"lret", "lretl">;
1576 def : MnemonicAlias<"leavel", "leave">, Requires<[In32BitMode]>;
1577 def : MnemonicAlias<"leaveq", "leave">, Requires<[In64BitMode]>;
1579 def : MnemonicAlias<"loopz", "loope">;
1580 def : MnemonicAlias<"loopnz", "loopne">;
1582 def : MnemonicAlias<"pop", "popl">, Requires<[In32BitMode]>;
1583 def : MnemonicAlias<"pop", "popq">, Requires<[In64BitMode]>;
1584 def : MnemonicAlias<"popf", "popfl">, Requires<[In32BitMode]>;
1585 def : MnemonicAlias<"popf", "popfq">, Requires<[In64BitMode]>;
1586 def : MnemonicAlias<"popfd", "popfl">;
1588 // FIXME: This is wrong for "push reg". "push %bx" should turn into pushw in
1589 // all modes. However: "push (addr)" and "push $42" should default to
1590 // pushl/pushq depending on the current mode. Similar for "pop %bx"
1591 def : MnemonicAlias<"push", "pushl">, Requires<[In32BitMode]>;
1592 def : MnemonicAlias<"push", "pushq">, Requires<[In64BitMode]>;
1593 def : MnemonicAlias<"pushf", "pushfl">, Requires<[In32BitMode]>;
1594 def : MnemonicAlias<"pushf", "pushfq">, Requires<[In64BitMode]>;
1595 def : MnemonicAlias<"pushfd", "pushfl">;
1597 def : MnemonicAlias<"repe", "rep">;
1598 def : MnemonicAlias<"repz", "rep">;
1599 def : MnemonicAlias<"repnz", "repne">;
1601 def : MnemonicAlias<"retl", "ret">, Requires<[In32BitMode]>;
1602 def : MnemonicAlias<"retq", "ret">, Requires<[In64BitMode]>;
1604 def : MnemonicAlias<"salb", "shlb">;
1605 def : MnemonicAlias<"salw", "shlw">;
1606 def : MnemonicAlias<"sall", "shll">;
1607 def : MnemonicAlias<"salq", "shlq">;
1609 def : MnemonicAlias<"smovb", "movsb">;
1610 def : MnemonicAlias<"smovw", "movsw">;
1611 def : MnemonicAlias<"smovl", "movsl">;
1612 def : MnemonicAlias<"smovq", "movsq">;
1614 def : MnemonicAlias<"ud2a", "ud2">;
1615 def : MnemonicAlias<"verrw", "verr">;
1617 // System instruction aliases.
1618 def : MnemonicAlias<"iret", "iretl">;
1619 def : MnemonicAlias<"sysret", "sysretl">;
1620 def : MnemonicAlias<"sysexit", "sysexitl">;
1622 def : MnemonicAlias<"lgdtl", "lgdt">, Requires<[In32BitMode]>;
1623 def : MnemonicAlias<"lgdtq", "lgdt">, Requires<[In64BitMode]>;
1624 def : MnemonicAlias<"lidtl", "lidt">, Requires<[In32BitMode]>;
1625 def : MnemonicAlias<"lidtq", "lidt">, Requires<[In64BitMode]>;
1626 def : MnemonicAlias<"sgdtl", "sgdt">, Requires<[In32BitMode]>;
1627 def : MnemonicAlias<"sgdtq", "sgdt">, Requires<[In64BitMode]>;
1628 def : MnemonicAlias<"sidtl", "sidt">, Requires<[In32BitMode]>;
1629 def : MnemonicAlias<"sidtq", "sidt">, Requires<[In64BitMode]>;
1632 // Floating point stack aliases.
1633 def : MnemonicAlias<"fcmovz", "fcmove">;
1634 def : MnemonicAlias<"fcmova", "fcmovnbe">;
1635 def : MnemonicAlias<"fcmovnae", "fcmovb">;
1636 def : MnemonicAlias<"fcmovna", "fcmovbe">;
1637 def : MnemonicAlias<"fcmovae", "fcmovnb">;
1638 def : MnemonicAlias<"fcomip", "fcompi">;
1639 def : MnemonicAlias<"fildq", "fildll">;
1640 def : MnemonicAlias<"fistpq", "fistpll">;
1641 def : MnemonicAlias<"fisttpq", "fisttpll">;
1642 def : MnemonicAlias<"fldcww", "fldcw">;
1643 def : MnemonicAlias<"fnstcww", "fnstcw">;
1644 def : MnemonicAlias<"fnstsww", "fnstsw">;
1645 def : MnemonicAlias<"fucomip", "fucompi">;
1646 def : MnemonicAlias<"fwait", "wait">;
1649 class CondCodeAlias<string Prefix,string Suffix, string OldCond, string NewCond>
1650 : MnemonicAlias<!strconcat(Prefix, OldCond, Suffix),
1651 !strconcat(Prefix, NewCond, Suffix)>;
1653 /// IntegerCondCodeMnemonicAlias - This multiclass defines a bunch of
1654 /// MnemonicAlias's that canonicalize the condition code in a mnemonic, for
1655 /// example "setz" -> "sete".
1656 multiclass IntegerCondCodeMnemonicAlias<string Prefix, string Suffix> {
1657 def C : CondCodeAlias<Prefix, Suffix, "c", "b">; // setc -> setb
1658 def Z : CondCodeAlias<Prefix, Suffix, "z" , "e">; // setz -> sete
1659 def NA : CondCodeAlias<Prefix, Suffix, "na", "be">; // setna -> setbe
1660 def NB : CondCodeAlias<Prefix, Suffix, "nb", "ae">; // setnb -> setae
1661 def NC : CondCodeAlias<Prefix, Suffix, "nc", "ae">; // setnc -> setae
1662 def NG : CondCodeAlias<Prefix, Suffix, "ng", "le">; // setng -> setle
1663 def NL : CondCodeAlias<Prefix, Suffix, "nl", "ge">; // setnl -> setge
1664 def NZ : CondCodeAlias<Prefix, Suffix, "nz", "ne">; // setnz -> setne
1665 def PE : CondCodeAlias<Prefix, Suffix, "pe", "p">; // setpe -> setp
1666 def PO : CondCodeAlias<Prefix, Suffix, "po", "np">; // setpo -> setnp
1668 def NAE : CondCodeAlias<Prefix, Suffix, "nae", "b">; // setnae -> setb
1669 def NBE : CondCodeAlias<Prefix, Suffix, "nbe", "a">; // setnbe -> seta
1670 def NGE : CondCodeAlias<Prefix, Suffix, "nge", "l">; // setnge -> setl
1671 def NLE : CondCodeAlias<Prefix, Suffix, "nle", "g">; // setnle -> setg
1674 // Aliases for set<CC>
1675 defm : IntegerCondCodeMnemonicAlias<"set", "">;
1676 // Aliases for j<CC>
1677 defm : IntegerCondCodeMnemonicAlias<"j", "">;
1678 // Aliases for cmov<CC>{w,l,q}
1679 defm : IntegerCondCodeMnemonicAlias<"cmov", "w">;
1680 defm : IntegerCondCodeMnemonicAlias<"cmov", "l">;
1681 defm : IntegerCondCodeMnemonicAlias<"cmov", "q">;
1684 //===----------------------------------------------------------------------===//
1685 // Assembler Instruction Aliases
1686 //===----------------------------------------------------------------------===//
1688 // aad/aam default to base 10 if no operand is specified.
1689 def : InstAlias<"aad", (AAD8i8 10)>;
1690 def : InstAlias<"aam", (AAM8i8 10)>;
1692 // Disambiguate the mem/imm form of bt-without-a-suffix as btl.
1693 def : InstAlias<"bt $imm, $mem", (BT32mi8 i32mem:$mem, i32i8imm:$imm)>;
1696 def : InstAlias<"clrb $reg", (XOR8rr GR8 :$reg, GR8 :$reg)>;
1697 def : InstAlias<"clrw $reg", (XOR16rr GR16:$reg, GR16:$reg)>;
1698 def : InstAlias<"clrl $reg", (XOR32rr GR32:$reg, GR32:$reg)>;
1699 def : InstAlias<"clrq $reg", (XOR64rr GR64:$reg, GR64:$reg)>;
1701 // div and idiv aliases for explicit A register.
1702 def : InstAlias<"divb $src, %al", (DIV8r GR8 :$src)>;
1703 def : InstAlias<"divw $src, %ax", (DIV16r GR16:$src)>;
1704 def : InstAlias<"divl $src, %eax", (DIV32r GR32:$src)>;
1705 def : InstAlias<"divq $src, %rax", (DIV64r GR64:$src)>;
1706 def : InstAlias<"divb $src, %al", (DIV8m i8mem :$src)>;
1707 def : InstAlias<"divw $src, %ax", (DIV16m i16mem:$src)>;
1708 def : InstAlias<"divl $src, %eax", (DIV32m i32mem:$src)>;
1709 def : InstAlias<"divq $src, %rax", (DIV64m i64mem:$src)>;
1710 def : InstAlias<"idivb $src, %al", (IDIV8r GR8 :$src)>;
1711 def : InstAlias<"idivw $src, %ax", (IDIV16r GR16:$src)>;
1712 def : InstAlias<"idivl $src, %eax", (IDIV32r GR32:$src)>;
1713 def : InstAlias<"idivq $src, %rax", (IDIV64r GR64:$src)>;
1714 def : InstAlias<"idivb $src, %al", (IDIV8m i8mem :$src)>;
1715 def : InstAlias<"idivw $src, %ax", (IDIV16m i16mem:$src)>;
1716 def : InstAlias<"idivl $src, %eax", (IDIV32m i32mem:$src)>;
1717 def : InstAlias<"idivq $src, %rax", (IDIV64m i64mem:$src)>;
1721 // Various unary fpstack operations default to operating on on ST1.
1722 // For example, "fxch" -> "fxch %st(1)"
1723 def : InstAlias<"faddp", (ADD_FPrST0 ST1), 0>;
1724 def : InstAlias<"fsubp", (SUBR_FPrST0 ST1)>;
1725 def : InstAlias<"fsubrp", (SUB_FPrST0 ST1)>;
1726 def : InstAlias<"fmulp", (MUL_FPrST0 ST1)>;
1727 def : InstAlias<"fdivp", (DIVR_FPrST0 ST1)>;
1728 def : InstAlias<"fdivrp", (DIV_FPrST0 ST1)>;
1729 def : InstAlias<"fxch", (XCH_F ST1)>;
1730 def : InstAlias<"fcomi", (COM_FIr ST1)>;
1731 def : InstAlias<"fcompi", (COM_FIPr ST1)>;
1732 def : InstAlias<"fucom", (UCOM_Fr ST1)>;
1733 def : InstAlias<"fucomp", (UCOM_FPr ST1)>;
1734 def : InstAlias<"fucomi", (UCOM_FIr ST1)>;
1735 def : InstAlias<"fucompi", (UCOM_FIPr ST1)>;
1737 // Handle fmul/fadd/fsub/fdiv instructions with explicitly written st(0) op.
1738 // For example, "fadd %st(4), %st(0)" -> "fadd %st(4)". We also disambiguate
1739 // instructions like "fadd %st(0), %st(0)" as "fadd %st(0)" for consistency with
1741 multiclass FpUnaryAlias<string Mnemonic, Instruction Inst, bit EmitAlias = 1> {
1742 def : InstAlias<!strconcat(Mnemonic, " $op, %st(0)"),
1743 (Inst RST:$op), EmitAlias>;
1744 def : InstAlias<!strconcat(Mnemonic, " %st(0), %st(0)"),
1745 (Inst ST0), EmitAlias>;
1748 defm : FpUnaryAlias<"fadd", ADD_FST0r>;
1749 defm : FpUnaryAlias<"faddp", ADD_FPrST0, 0>;
1750 defm : FpUnaryAlias<"fsub", SUB_FST0r>;
1751 defm : FpUnaryAlias<"fsubp", SUBR_FPrST0>;
1752 defm : FpUnaryAlias<"fsubr", SUBR_FST0r>;
1753 defm : FpUnaryAlias<"fsubrp", SUB_FPrST0>;
1754 defm : FpUnaryAlias<"fmul", MUL_FST0r>;
1755 defm : FpUnaryAlias<"fmulp", MUL_FPrST0>;
1756 defm : FpUnaryAlias<"fdiv", DIV_FST0r>;
1757 defm : FpUnaryAlias<"fdivp", DIVR_FPrST0>;
1758 defm : FpUnaryAlias<"fdivr", DIVR_FST0r>;
1759 defm : FpUnaryAlias<"fdivrp", DIV_FPrST0>;
1760 defm : FpUnaryAlias<"fcomi", COM_FIr, 0>;
1761 defm : FpUnaryAlias<"fucomi", UCOM_FIr, 0>;
1762 defm : FpUnaryAlias<"fcompi", COM_FIPr>;
1763 defm : FpUnaryAlias<"fucompi", UCOM_FIPr>;
1766 // Handle "f{mulp,addp} st(0), $op" the same as "f{mulp,addp} $op", since they
1767 // commute. We also allow fdiv[r]p/fsubrp even though they don't commute,
1768 // solely because gas supports it.
1769 def : InstAlias<"faddp %st(0), $op", (ADD_FPrST0 RST:$op), 0>;
1770 def : InstAlias<"fmulp %st(0), $op", (MUL_FPrST0 RST:$op)>;
1771 def : InstAlias<"fsubp %st(0), $op", (SUBR_FPrST0 RST:$op)>;
1772 def : InstAlias<"fsubrp %st(0), $op", (SUB_FPrST0 RST:$op)>;
1773 def : InstAlias<"fdivp %st(0), $op", (DIVR_FPrST0 RST:$op)>;
1774 def : InstAlias<"fdivrp %st(0), $op", (DIV_FPrST0 RST:$op)>;
1776 // We accept "fnstsw %eax" even though it only writes %ax.
1777 def : InstAlias<"fnstsw %eax", (FNSTSW8r)>;
1778 def : InstAlias<"fnstsw %al" , (FNSTSW8r)>;
1779 def : InstAlias<"fnstsw" , (FNSTSW8r)>;
1781 // lcall and ljmp aliases. This seems to be an odd mapping in 64-bit mode, but
1782 // this is compatible with what GAS does.
1783 def : InstAlias<"lcall $seg, $off", (FARCALL32i i32imm:$off, i16imm:$seg)>;
1784 def : InstAlias<"ljmp $seg, $off", (FARJMP32i i32imm:$off, i16imm:$seg)>;
1785 def : InstAlias<"lcall *$dst", (FARCALL32m opaque48mem:$dst)>;
1786 def : InstAlias<"ljmp *$dst", (FARJMP32m opaque48mem:$dst)>;
1788 // "imul <imm>, B" is an alias for "imul <imm>, B, B".
1789 def : InstAlias<"imulw $imm, $r", (IMUL16rri GR16:$r, GR16:$r, i16imm:$imm)>;
1790 def : InstAlias<"imulw $imm, $r", (IMUL16rri8 GR16:$r, GR16:$r, i16i8imm:$imm)>;
1791 def : InstAlias<"imull $imm, $r", (IMUL32rri GR32:$r, GR32:$r, i32imm:$imm)>;
1792 def : InstAlias<"imull $imm, $r", (IMUL32rri8 GR32:$r, GR32:$r, i32i8imm:$imm)>;
1793 def : InstAlias<"imulq $imm, $r",(IMUL64rri32 GR64:$r, GR64:$r,i64i32imm:$imm)>;
1794 def : InstAlias<"imulq $imm, $r", (IMUL64rri8 GR64:$r, GR64:$r, i64i8imm:$imm)>;
1796 // inb %dx -> inb %al, %dx
1797 def : InstAlias<"inb %dx", (IN8rr)>;
1798 def : InstAlias<"inw %dx", (IN16rr)>;
1799 def : InstAlias<"inl %dx", (IN32rr)>;
1800 def : InstAlias<"inb $port", (IN8ri i8imm:$port)>;
1801 def : InstAlias<"inw $port", (IN16ri i8imm:$port)>;
1802 def : InstAlias<"inl $port", (IN32ri i8imm:$port)>;
1805 // jmp and call aliases for lcall and ljmp. jmp $42,$5 -> ljmp
1806 def : InstAlias<"call $seg, $off", (FARCALL32i i32imm:$off, i16imm:$seg)>;
1807 def : InstAlias<"jmp $seg, $off", (FARJMP32i i32imm:$off, i16imm:$seg)>;
1808 def : InstAlias<"callw $seg, $off", (FARCALL16i i16imm:$off, i16imm:$seg)>;
1809 def : InstAlias<"jmpw $seg, $off", (FARJMP16i i16imm:$off, i16imm:$seg)>;
1810 def : InstAlias<"calll $seg, $off", (FARCALL32i i32imm:$off, i16imm:$seg)>;
1811 def : InstAlias<"jmpl $seg, $off", (FARJMP32i i32imm:$off, i16imm:$seg)>;
1813 // Force mov without a suffix with a segment and mem to prefer the 'l' form of
1814 // the move. All segment/mem forms are equivalent, this has the shortest
1816 def : InstAlias<"mov $mem, $seg", (MOV32sm SEGMENT_REG:$seg, i32mem:$mem)>;
1817 def : InstAlias<"mov $seg, $mem", (MOV32ms i32mem:$mem, SEGMENT_REG:$seg)>;
1819 // Match 'movq <largeimm>, <reg>' as an alias for movabsq.
1820 def : InstAlias<"movq $imm, $reg", (MOV64ri GR64:$reg, i64imm:$imm)>;
1822 // Match 'movq GR64, MMX' as an alias for movd.
1823 def : InstAlias<"movq $src, $dst",
1824 (MMX_MOVD64to64rr VR64:$dst, GR64:$src), 0>;
1825 def : InstAlias<"movq $src, $dst",
1826 (MMX_MOVD64from64rr GR64:$dst, VR64:$src), 0>;
1828 // movsd with no operands (as opposed to the SSE scalar move of a double) is an
1829 // alias for movsl. (as in rep; movsd)
1830 def : InstAlias<"movsd", (MOVSD)>;
1833 def : InstAlias<"movsx $src, $dst", (MOVSX16rr8 GR16:$dst, GR8:$src), 0>;
1834 def : InstAlias<"movsx $src, $dst", (MOVSX16rm8 GR16:$dst, i8mem:$src), 0>;
1835 def : InstAlias<"movsx $src, $dst", (MOVSX32rr8 GR32:$dst, GR8:$src), 0>;
1836 def : InstAlias<"movsx $src, $dst", (MOVSX32rr16 GR32:$dst, GR16:$src), 0>;
1837 def : InstAlias<"movsx $src, $dst", (MOVSX64rr8 GR64:$dst, GR8:$src), 0>;
1838 def : InstAlias<"movsx $src, $dst", (MOVSX64rr16 GR64:$dst, GR16:$src), 0>;
1839 def : InstAlias<"movsx $src, $dst", (MOVSX64rr32 GR64:$dst, GR32:$src), 0>;
1842 def : InstAlias<"movzx $src, $dst", (MOVZX16rr8 GR16:$dst, GR8:$src), 0>;
1843 def : InstAlias<"movzx $src, $dst", (MOVZX16rm8 GR16:$dst, i8mem:$src), 0>;
1844 def : InstAlias<"movzx $src, $dst", (MOVZX32rr8 GR32:$dst, GR8:$src), 0>;
1845 def : InstAlias<"movzx $src, $dst", (MOVZX32rr16 GR32:$dst, GR16:$src), 0>;
1846 def : InstAlias<"movzx $src, $dst", (MOVZX64rr8_Q GR64:$dst, GR8:$src), 0>;
1847 def : InstAlias<"movzx $src, $dst", (MOVZX64rr16_Q GR64:$dst, GR16:$src), 0>;
1848 // Note: No GR32->GR64 movzx form.
1850 // outb %dx -> outb %al, %dx
1851 def : InstAlias<"outb %dx", (OUT8rr)>;
1852 def : InstAlias<"outw %dx", (OUT16rr)>;
1853 def : InstAlias<"outl %dx", (OUT32rr)>;
1854 def : InstAlias<"outb $port", (OUT8ir i8imm:$port)>;
1855 def : InstAlias<"outw $port", (OUT16ir i8imm:$port)>;
1856 def : InstAlias<"outl $port", (OUT32ir i8imm:$port)>;
1858 // 'sldt <mem>' can be encoded with either sldtw or sldtq with the same
1859 // effect (both store to a 16-bit mem). Force to sldtw to avoid ambiguity
1860 // errors, since its encoding is the most compact.
1861 def : InstAlias<"sldt $mem", (SLDT16m i16mem:$mem)>;
1863 // shld/shrd op,op -> shld op, op, CL
1864 def : InstAlias<"shldw $r2, $r1", (SHLD16rrCL GR16:$r1, GR16:$r2)>;
1865 def : InstAlias<"shldl $r2, $r1", (SHLD32rrCL GR32:$r1, GR32:$r2)>;
1866 def : InstAlias<"shldq $r2, $r1", (SHLD64rrCL GR64:$r1, GR64:$r2)>;
1867 def : InstAlias<"shrdw $r2, $r1", (SHRD16rrCL GR16:$r1, GR16:$r2)>;
1868 def : InstAlias<"shrdl $r2, $r1", (SHRD32rrCL GR32:$r1, GR32:$r2)>;
1869 def : InstAlias<"shrdq $r2, $r1", (SHRD64rrCL GR64:$r1, GR64:$r2)>;
1871 def : InstAlias<"shldw $reg, $mem", (SHLD16mrCL i16mem:$mem, GR16:$reg)>;
1872 def : InstAlias<"shldl $reg, $mem", (SHLD32mrCL i32mem:$mem, GR32:$reg)>;
1873 def : InstAlias<"shldq $reg, $mem", (SHLD64mrCL i64mem:$mem, GR64:$reg)>;
1874 def : InstAlias<"shrdw $reg, $mem", (SHRD16mrCL i16mem:$mem, GR16:$reg)>;
1875 def : InstAlias<"shrdl $reg, $mem", (SHRD32mrCL i32mem:$mem, GR32:$reg)>;
1876 def : InstAlias<"shrdq $reg, $mem", (SHRD64mrCL i64mem:$mem, GR64:$reg)>;
1878 /* FIXME: This is disabled because the asm matcher is currently incapable of
1879 * matching a fixed immediate like $1.
1880 // "shl X, $1" is an alias for "shl X".
1881 multiclass ShiftRotateByOneAlias<string Mnemonic, string Opc> {
1882 def : InstAlias<!strconcat(Mnemonic, "b $op, $$1"),
1883 (!cast<Instruction>(!strconcat(Opc, "8r1")) GR8:$op)>;
1884 def : InstAlias<!strconcat(Mnemonic, "w $op, $$1"),
1885 (!cast<Instruction>(!strconcat(Opc, "16r1")) GR16:$op)>;
1886 def : InstAlias<!strconcat(Mnemonic, "l $op, $$1"),
1887 (!cast<Instruction>(!strconcat(Opc, "32r1")) GR32:$op)>;
1888 def : InstAlias<!strconcat(Mnemonic, "q $op, $$1"),
1889 (!cast<Instruction>(!strconcat(Opc, "64r1")) GR64:$op)>;
1890 def : InstAlias<!strconcat(Mnemonic, "b $op, $$1"),
1891 (!cast<Instruction>(!strconcat(Opc, "8m1")) i8mem:$op)>;
1892 def : InstAlias<!strconcat(Mnemonic, "w $op, $$1"),
1893 (!cast<Instruction>(!strconcat(Opc, "16m1")) i16mem:$op)>;
1894 def : InstAlias<!strconcat(Mnemonic, "l $op, $$1"),
1895 (!cast<Instruction>(!strconcat(Opc, "32m1")) i32mem:$op)>;
1896 def : InstAlias<!strconcat(Mnemonic, "q $op, $$1"),
1897 (!cast<Instruction>(!strconcat(Opc, "64m1")) i64mem:$op)>;
1900 defm : ShiftRotateByOneAlias<"rcl", "RCL">;
1901 defm : ShiftRotateByOneAlias<"rcr", "RCR">;
1902 defm : ShiftRotateByOneAlias<"rol", "ROL">;
1903 defm : ShiftRotateByOneAlias<"ror", "ROR">;
1906 // test: We accept "testX <reg>, <mem>" and "testX <mem>, <reg>" as synonyms.
1907 def : InstAlias<"testb $val, $mem", (TEST8rm GR8 :$val, i8mem :$mem)>;
1908 def : InstAlias<"testw $val, $mem", (TEST16rm GR16:$val, i16mem:$mem)>;
1909 def : InstAlias<"testl $val, $mem", (TEST32rm GR32:$val, i32mem:$mem)>;
1910 def : InstAlias<"testq $val, $mem", (TEST64rm GR64:$val, i64mem:$mem)>;
1912 // xchg: We accept "xchgX <reg>, <mem>" and "xchgX <mem>, <reg>" as synonyms.
1913 def : InstAlias<"xchgb $mem, $val", (XCHG8rm GR8 :$val, i8mem :$mem)>;
1914 def : InstAlias<"xchgw $mem, $val", (XCHG16rm GR16:$val, i16mem:$mem)>;
1915 def : InstAlias<"xchgl $mem, $val", (XCHG32rm GR32:$val, i32mem:$mem)>;
1916 def : InstAlias<"xchgq $mem, $val", (XCHG64rm GR64:$val, i64mem:$mem)>;
1918 // xchg: We accept "xchgX <reg>, %eax" and "xchgX %eax, <reg>" as synonyms.
1919 def : InstAlias<"xchgw %ax, $src", (XCHG16ar GR16:$src)>;
1920 def : InstAlias<"xchgl %eax, $src", (XCHG32ar GR32:$src)>, Requires<[In32BitMode]>;
1921 def : InstAlias<"xchgl %eax, $src", (XCHG32ar64 GR32_NOAX:$src)>, Requires<[In64BitMode]>;
1922 def : InstAlias<"xchgq %rax, $src", (XCHG64ar GR64:$src)>;