1 //===- X86InstrInfo.td - Describe the X86 Instruction Set -------*- C++ -*-===//
3 // The LLVM Compiler Infrastructure
5 // This file was developed by the LLVM research group and is distributed under
6 // the University of Illinois Open Source 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 // Format specifies the encoding used by the instruction. This is part of the
17 // ad-hoc solution used to emit machine instruction encodings by our machine
19 class Format<bits<5> val> {
23 def Pseudo : Format<0>; def RawFrm : Format<1>;
24 def AddRegFrm : Format<2>; def MRMDestReg : Format<3>;
25 def MRMDestMem : Format<4>; def MRMSrcReg : Format<5>;
26 def MRMSrcMem : Format<6>;
27 def MRM0r : Format<16>; def MRM1r : Format<17>; def MRM2r : Format<18>;
28 def MRM3r : Format<19>; def MRM4r : Format<20>; def MRM5r : Format<21>;
29 def MRM6r : Format<22>; def MRM7r : Format<23>;
30 def MRM0m : Format<24>; def MRM1m : Format<25>; def MRM2m : Format<26>;
31 def MRM3m : Format<27>; def MRM4m : Format<28>; def MRM5m : Format<29>;
32 def MRM6m : Format<30>; def MRM7m : Format<31>;
34 // ImmType - This specifies the immediate type used by an instruction. This is
35 // part of the ad-hoc solution used to emit machine instruction encodings by our
36 // machine code emitter.
37 class ImmType<bits<2> val> {
40 def NoImm : ImmType<0>;
41 def Imm8 : ImmType<1>;
42 def Imm16 : ImmType<2>;
43 def Imm32 : ImmType<3>;
45 // MemType - This specifies the immediate type used by an instruction. This is
46 // part of the ad-hoc solution used to emit machine instruction encodings by our
47 // machine code emitter.
48 class MemType<bits<3> val> {
51 def NoMem : MemType<0>;
52 def Mem8 : MemType<1>;
53 def Mem16 : MemType<2>;
54 def Mem32 : MemType<3>;
55 def Mem64 : MemType<4>;
56 def Mem80 : MemType<5>;
57 def Mem128 : MemType<6>;
59 // FPFormat - This specifies what form this FP instruction has. This is used by
60 // the Floating-Point stackifier pass.
61 class FPFormat<bits<3> val> {
64 def NotFP : FPFormat<0>;
65 def ZeroArgFP : FPFormat<1>;
66 def OneArgFP : FPFormat<2>;
67 def OneArgFPRW : FPFormat<3>;
68 def TwoArgFP : FPFormat<4>;
69 def CompareFP : FPFormat<5>;
70 def CondMovFP : FPFormat<6>;
71 def SpecialFP : FPFormat<7>;
74 class X86Inst<string nam, bits<8> opcod, Format f, MemType m, ImmType i> : Instruction {
75 let Namespace = "X86";
78 bits<8> Opcode = opcod;
80 bits<5> FormBits = Form.Value;
82 bits<3> MemTypeBits = MemT.Value;
84 bits<2> ImmTypeBits = ImmT.Value;
87 // Attributes specific to X86 instructions...
89 bit hasOpSizePrefix = 0; // Does this inst have a 0x66 prefix?
91 // Flag whether implicit register usage is printed after the instruction.
92 bit printImplicitUsesAfter = 0;
94 bits<4> Prefix = 0; // Which prefix byte does this inst have?
95 FPFormat FPForm; // What flavor of FP instruction is this?
96 bits<3> FPFormBits = 0;
99 class Imp<list<Register> uses, list<Register> defs> {
100 list<Register> Uses = uses;
101 list<Register> Defs = defs;
104 // II - InstructionInfo - this will eventually replace the I class.
105 class II<dag ops, string AsmStr> {
106 dag OperandList = ops;
107 string AsmString = AsmStr;
111 // Prefix byte classes which are used to indicate to the ad-hoc machine code
112 // emitter that various prefix bytes are required.
113 class OpSize { bit hasOpSizePrefix = 1; }
114 class TB { bits<4> Prefix = 1; }
115 class REP { bits<4> Prefix = 2; }
116 class D8 { bits<4> Prefix = 3; }
117 class D9 { bits<4> Prefix = 4; }
118 class DA { bits<4> Prefix = 5; }
119 class DB { bits<4> Prefix = 6; }
120 class DC { bits<4> Prefix = 7; }
121 class DD { bits<4> Prefix = 8; }
122 class DE { bits<4> Prefix = 9; }
123 class DF { bits<4> Prefix = 10; }
126 //===----------------------------------------------------------------------===//
127 // Instruction templates...
129 class I<bits<8> o, Format f> : X86Inst<"", o, f, NoMem, NoImm>;
131 class Im<string n, bits<8> o, Format f, MemType m> : X86Inst<n, o, f, m, NoImm>;
132 class Im8 <string n, bits<8> o, Format f> : Im<n, o, f, Mem8 >;
133 class Im16<string n, bits<8> o, Format f> : Im<n, o, f, Mem16>;
134 class Im32<string n, bits<8> o, Format f> : Im<n, o, f, Mem32>;
136 class Ii<bits<8> o, Format f, ImmType i> : X86Inst<"", o, f, NoMem, i>;
137 class Ii8 <bits<8> o, Format f, dag ops, string asm> : Ii<o, f, Imm8 >, II<ops, asm>;
138 class Ii16<bits<8> o, Format f, dag ops, string asm> : Ii<o, f, Imm16>, II<ops, asm>;
139 class Ii32<bits<8> o, Format f, dag ops, string asm> : Ii<o, f, Imm32>, II<ops, asm>;
141 class Im8i8 <string n, bits<8> o, Format f> : X86Inst<n, o, f, Mem8 , Imm8 >;
142 class Im16i16<string n, bits<8> o, Format f> : X86Inst<n, o, f, Mem16, Imm16>;
143 class Im32i32<string n, bits<8> o, Format f> : X86Inst<n, o, f, Mem32, Imm32>;
145 class Im16i8<string n, bits<8> o, Format f> : X86Inst<n, o, f, Mem16, Imm8>;
146 class Im32i8<string n, bits<8> o, Format f> : X86Inst<n, o, f, Mem32, Imm8>;
148 //===----------------------------------------------------------------------===//
149 // Instruction list...
152 def PHI : I<0, Pseudo>; // PHI node.
153 def NOOP : I<0x90, RawFrm>, II<(ops), "nop">; // nop
155 def ADJCALLSTACKDOWN : I<0, Pseudo>;
156 def ADJCALLSTACKUP : I<0, Pseudo>;
157 def IMPLICIT_USE : I<0, Pseudo>;
158 def IMPLICIT_DEF : I<0, Pseudo>;
159 let isTerminator = 1 in
160 let Defs = [FP0, FP1, FP2, FP3, FP4, FP5, FP6] in
161 def FP_REG_KILL : I<0, Pseudo>;
163 //===----------------------------------------------------------------------===//
164 // Control Flow Instructions...
167 // Return instruction...
168 let isTerminator = 1, isReturn = 1, isBarrier = 1 in
169 def RET : I<0xC3, RawFrm>, II<(ops), "ret">;
171 // All branches are RawFrm, Void, Branch, and Terminators
172 let isBranch = 1, isTerminator = 1 in
173 class IBr<bits<8> opcode> : I<opcode, RawFrm>;
176 def JMP : IBr<0xE9>, II<(ops i32imm:$dst), "jmp $dst">;
177 def JB : IBr<0x82>, TB, II<(ops i32imm:$dst), "jb $dst">;
178 def JAE : IBr<0x83>, TB, II<(ops i32imm:$dst), "jae $dst">;
179 def JE : IBr<0x84>, TB, II<(ops i32imm:$dst), "je $dst">;
180 def JNE : IBr<0x85>, TB, II<(ops i32imm:$dst), "jne $dst">;
181 def JBE : IBr<0x86>, TB, II<(ops i32imm:$dst), "jbe $dst">;
182 def JA : IBr<0x87>, TB, II<(ops i32imm:$dst), "ja $dst">;
183 def JS : IBr<0x88>, TB, II<(ops i32imm:$dst), "js $dst">;
184 def JNS : IBr<0x89>, TB, II<(ops i32imm:$dst), "jns $dst">;
185 def JL : IBr<0x8C>, TB, II<(ops i32imm:$dst), "jl $dst">;
186 def JGE : IBr<0x8D>, TB, II<(ops i32imm:$dst), "jge $dst">;
187 def JLE : IBr<0x8E>, TB, II<(ops i32imm:$dst), "jle $dst">;
188 def JG : IBr<0x8F>, TB, II<(ops i32imm:$dst), "jg $dst">;
191 //===----------------------------------------------------------------------===//
192 // Call Instructions...
195 // All calls clobber the non-callee saved registers...
196 let Defs = [EAX, ECX, EDX, FP0, FP1, FP2, FP3, FP4, FP5, FP6] in {
197 def CALLpcrel32 : X86Inst<"call", 0xE8, RawFrm, NoMem, NoImm>; // FIXME: 'call' doesn't allow 'OFFSET'
198 def CALL32r : I<0xFF, MRM2r>, II<(ops R32:$dst), "call $dst">;
199 def CALL32m : Im32<"call", 0xFF, MRM2m>;
203 //===----------------------------------------------------------------------===//
204 // Miscellaneous Instructions...
206 def LEAVE : I<0xC9, RawFrm>, Imp<[EBP,ESP],[EBP,ESP]>,
208 def POP32r : I<0x58, AddRegFrm>, Imp<[ESP],[ESP]>,
209 II<(ops R32:$reg), "pop $reg">;
211 let isTwoAddress = 1 in // R32 = bswap R32
212 def BSWAP32r : I<0xC8, AddRegFrm>, TB,
213 II<(ops R32:$dst, R32:$src), "bswap $dst">;
215 def XCHG8rr : I<0x86, MRMDestReg>, // xchg R8, R8
216 II<(ops R8:$src1, R8:$src2), "xchg $src1, $src2">;
217 def XCHG16rr : I<0x87, MRMDestReg>, OpSize, // xchg R16, R16
218 II<(ops R16:$src1, R16:$src2), "xchg $src1, $src2">;
219 def XCHG32rr : I<0x87, MRMDestReg>, // xchg R32, R32
220 II<(ops R32:$src1, R32:$src2), "xchg $src1, $src2">;
222 def XCHG8mr : Im8 <"xchg", 0x86, MRMDestMem>; // xchg [mem8], R8
223 def XCHG16mr : Im16<"xchg", 0x87, MRMDestMem>, OpSize; // xchg [mem16], R16
224 def XCHG32mr : Im32<"xchg", 0x87, MRMDestMem>; // xchg [mem32], R32
225 def XCHG8rm : Im8 <"xchg", 0x86, MRMSrcMem >; // xchg R8, [mem8]
226 def XCHG16rm : Im16<"xchg", 0x87, MRMSrcMem >, OpSize; // xchg R16, [mem16]
227 def XCHG32rm : Im32<"xchg", 0x87, MRMSrcMem >; // xchg R32, [mem32]
229 def LEA16r : Im32<"lea", 0x8D, MRMSrcMem>, OpSize; // R16 = lea [mem]
230 def LEA32r : Im32<"lea", 0x8D, MRMSrcMem>; // R32 = lea [mem]
233 def REP_MOVSB : I<0xA4, RawFrm>, REP,
234 Imp<[ECX,EDI,ESI], [ECX,EDI,ESI]>,
235 II<(ops), "rep movsb">;
236 def REP_MOVSW : I<0xA5, RawFrm>, REP, OpSize,
237 Imp<[ECX,EDI,ESI], [ECX,EDI,ESI]>,
238 II<(ops), "rep movsw">;
239 def REP_MOVSD : I<0xA5, RawFrm>, REP,
240 Imp<[ECX,EDI,ESI], [ECX,EDI,ESI]>,
241 II<(ops), "rep movsd">;
243 def REP_STOSB : I<0xAA, RawFrm>, REP,
244 Imp<[AL,ECX,EDI], [ECX,EDI]>,
245 II<(ops), "rep stosb">;
246 def REP_STOSW : I<0xAB, RawFrm>, REP, OpSize,
247 Imp<[AX,ECX,EDI], [ECX,EDI]>,
248 II<(ops), "rep stosw">;
249 def REP_STOSD : I<0xAB, RawFrm>, REP,
250 Imp<[EAX,ECX,EDI], [ECX,EDI]>,
251 II<(ops), "rep stosd">;
253 //===----------------------------------------------------------------------===//
254 // Input/Output Instructions...
256 def IN8rr : I<0xEC, RawFrm>, Imp<[DX], [AL]>, // AL = in I/O address DX
257 II<(ops), "in %AL, %DX">;
258 def IN16rr : I<0xED, RawFrm>, Imp<[DX], [AX]>, OpSize, // AX = in I/O address DX
259 II<(ops), "in %AX, %DX">;
260 def IN32rr : I<0xED, RawFrm>, Imp<[DX],[EAX]>, // EAX = in I/O address DX
261 II<(ops), "in %EAX, %DX">;
263 def IN8ri : Ii16<0xE4, RawFrm, (ops i16imm:$port), // AL = in [I/O address]
266 def IN16ri : Ii16<0xE5, RawFrm, (ops i16imm:$port), // AX = in [I/O address]
268 Imp<[], [AX]>, OpSize;
269 def IN32ri : Ii16<0xE5, RawFrm, (ops i16imm:$port), // EAX = in [I/O address]
273 def OUT8rr : I<0xEE, RawFrm>, Imp<[DX, AL], []>,
274 II<(ops), "out %DX, %AL">;
275 def OUT16rr : I<0xEF, RawFrm>, Imp<[DX, AX], []>, OpSize,
276 II<(ops), "out %DX, %AX">;
277 def OUT32rr : I<0xEF, RawFrm>, Imp<[DX, EAX], []>,
278 II<(ops), "out %DX, %EAX">;
280 def OUT8ir : Ii16<0xE6, RawFrm, (ops i16imm:$port),
281 "out $port, %AL">, Imp<[AL], []>;
282 def OUT16ir : Ii16<0xE7, RawFrm, (ops i16imm:$port),
283 "out $port, %AX">, Imp<[AX], []>, OpSize;
284 def OUT32ir : Ii16<0xE7, RawFrm, (ops i16imm:$port),
285 "out $port, %EAX">, Imp<[EAX], []>;
287 //===----------------------------------------------------------------------===//
288 // Move Instructions...
290 def MOV8rr : I<0x88, MRMDestReg>, II<(ops R8 :$dst, R8 :$src), "mov $dst, $src">;
291 def MOV16rr : I<0x89, MRMDestReg>, OpSize, II<(ops R16:$dst, R16 :$src), "mov $dst, $src">;
292 def MOV32rr : I<0x89, MRMDestReg>, II<(ops R32:$dst, R32 :$src), "mov $dst, $src">;
293 def MOV8ri : Ii8 <0xB0, AddRegFrm, (ops R8 :$dst, i8imm :$src), "mov $dst, $src">;
294 def MOV16ri : Ii16<0xB8, AddRegFrm, (ops R16:$dst, i16imm:$src), "mov $dst, $src">, OpSize;
295 def MOV32ri : Ii32<0xB8, AddRegFrm, (ops R32:$dst, i32imm:$src), "mov $dst, $src">;
296 def MOV8mi : Im8i8 <"mov", 0xC6, MRM0m >; // [mem8] = imm8
297 def MOV16mi : Im16i16<"mov", 0xC7, MRM0m >, OpSize; // [mem16] = imm16
298 def MOV32mi : Im32i32<"mov", 0xC7, MRM0m >; // [mem32] = imm32
300 def MOV8rm : Im8 <"mov", 0x8A, MRMSrcMem>; // R8 = [mem8]
301 def MOV16rm : Im16 <"mov", 0x8B, MRMSrcMem>, OpSize; // R16 = [mem16]
302 def MOV32rm : Im32 <"mov", 0x8B, MRMSrcMem>; // R32 = [mem32]
304 def MOV8mr : Im8 <"mov", 0x88, MRMDestMem>; // [mem8] = R8
305 def MOV16mr : Im16 <"mov", 0x89, MRMDestMem>, OpSize; // [mem16] = R16
306 def MOV32mr : Im32 <"mov", 0x89, MRMDestMem>; // [mem32] = R32
308 //===----------------------------------------------------------------------===//
309 // Fixed-Register Multiplication and Division Instructions...
312 // Extra precision multiplication
313 def MUL8r : I<0xF6, MRM4r>, Imp<[AL],[AX]>, // AL,AH = AL*R8
314 II<(ops R8:$src), "mul $src">;
315 def MUL16r : I<0xF7, MRM4r>, Imp<[AX],[AX,DX]>, OpSize, // AX,DX = AX*R16
316 II<(ops R16:$src), "mul $src">;
317 def MUL32r : I<0xF7, MRM4r>, Imp<[EAX],[EAX,EDX]>, // EAX,EDX = EAX*R32
318 II<(ops R32:$src), "mul $src">;
319 def MUL8m : Im8 <"mul", 0xF6, MRM4m>, Imp<[AL],[AX]>; // AL,AH = AL*[mem8]
320 def MUL16m : Im16<"mul", 0xF7, MRM4m>, Imp<[AX],[AX,DX]>, OpSize; // AX,DX = AX*[mem16]
321 def MUL32m : Im32<"mul", 0xF7, MRM4m>, Imp<[EAX],[EAX,EDX]>; // EAX,EDX = EAX*[mem32]
323 // unsigned division/remainder
324 def DIV8r : I<0xF6, MRM6r>, Imp<[AX],[AX]>, // AX/r8 = AL,AH
325 II<(ops R8:$src), "div $src">;
326 def DIV16r : I<0xF7, MRM6r>, Imp<[AX,DX],[AX,DX]>, OpSize, // DX:AX/r16 = AX,DX
327 II<(ops R16:$src), "div $src">;
328 def DIV32r : I<0xF7, MRM6r>, Imp<[EAX,EDX],[EAX,EDX]>, // EDX:EAX/r32 = EAX,EDX
329 II<(ops R32:$src), "div $src">;
330 def DIV8m : Im8 <"div", 0xF6, MRM6m>, Imp<[AX],[AX]>; // AX/[mem8] = AL,AH
331 def DIV16m : Im16<"div", 0xF7, MRM6m>, Imp<[AX,DX],[AX,DX]>, OpSize; // DX:AX/[mem16] = AX,DX
332 def DIV32m : Im32<"div", 0xF7, MRM6m>, Imp<[EAX,EDX],[EAX,EDX]>; // EDX:EAX/[mem32] = EAX,EDX
334 // Signed division/remainder.
335 def IDIV8r : I<0xF6, MRM7r>, Imp<[AX],[AX]>, // AX/r8 = AL,AH
336 II<(ops R8:$src), "idiv $src">;
337 def IDIV16r: I<0xF7, MRM7r>, Imp<[AX,DX],[AX,DX]>, OpSize, // DX:AX/r16 = AX,DX
338 II<(ops R16:$src), "idiv $src">;
339 def IDIV32r: I<0xF7, MRM7r>, Imp<[EAX,EDX],[EAX,EDX]>, // EDX:EAX/r32 = EAX,EDX
340 II<(ops R32:$src), "idiv $src">;
341 def IDIV8m : Im8 <"idiv",0xF6, MRM7m>, Imp<[AX],[AX]>; // AX/[mem8] = AL,AH
342 def IDIV16m: Im16<"idiv",0xF7, MRM7m>, Imp<[AX,DX],[AX,DX]>, OpSize; // DX:AX/[mem16] = AX,DX
343 def IDIV32m: Im32<"idiv",0xF7, MRM7m>, Imp<[EAX,EDX],[EAX,EDX]>; // EDX:EAX/[mem32] = EAX,EDX
345 // Sign-extenders for division.
346 def CBW : I<0x98, RawFrm>, Imp<[AL],[AH]>, II<(ops), "cbw">; // AX = signext(AL)
347 def CWD : I<0x99, RawFrm>, Imp<[AX],[DX]>, II<(ops), "cwd">; // DX:AX = signext(AX)
348 def CDQ : I<0x99, RawFrm>, Imp<[EAX],[EDX]>, II<(ops), "cdq">; // EDX:EAX = signext(EAX)
351 //===----------------------------------------------------------------------===//
352 // Two address Instructions...
354 let isTwoAddress = 1 in {
357 def CMOVB16rr : I<0x42, MRMSrcReg>, TB, OpSize, // if <u, R16 = R16
358 II<(ops R16:$dst, R16:$src1, R16:$src2), "cmovb $dst, $src2">;
359 def CMOVB16rm : Im16<"cmovb", 0x42, MRMSrcMem>, TB, OpSize; // if <u, R16 = [mem16]
360 def CMOVB32rr : I<0x42, MRMSrcReg>, TB, // if <u, R32 = R32
361 II<(ops R32:$dst, R32:$src1, R32:$src2), "cmovb $dst, $src2">;
362 def CMOVB32rm : Im32<"cmovb", 0x42, MRMSrcMem>, TB; // if <u, R32 = [mem32]
364 def CMOVAE16rr: I<0x43, MRMSrcReg>, TB, OpSize, // if >=u, R16 = R16
365 II<(ops R16:$dst, R16:$src1, R16:$src2), "cmovae $dst, $src2">;
366 def CMOVAE16rm: Im16<"cmovae", 0x43, MRMSrcMem>, TB, OpSize; // if >=u, R16 = [mem16]
367 def CMOVAE32rr: I<0x43, MRMSrcReg>, TB, // if >=u, R32 = R32
368 II<(ops R32:$dst, R32:$src1, R32:$src2), "cmovae $dst, $src2">;
369 def CMOVAE32rm: Im32<"cmovae", 0x43, MRMSrcMem>, TB; // if >=u, R32 = [mem32]
371 def CMOVE16rr : I<0x44, MRMSrcReg>, TB, OpSize, // if ==, R16 = R16
372 II<(ops R16:$dst, R16:$src1, R16:$src2), "cmove $dst, $src2">;
373 def CMOVE16rm : Im16<"cmove", 0x44, MRMSrcMem>, TB, OpSize; // if ==, R16 = [mem16]
374 def CMOVE32rr : I<0x44, MRMSrcReg>, TB, // if ==, R32 = R32
375 II<(ops R32:$dst, R32:$src1, R32:$src2), "cmove $dst, $src2">;
376 def CMOVE32rm : Im32<"cmove", 0x44, MRMSrcMem>, TB; // if ==, R32 = [mem32]
378 def CMOVNE16rr: I<0x45, MRMSrcReg>, TB, OpSize, // if !=, R16 = R16
379 II<(ops R16:$dst, R16:$src1, R16:$src2), "cmovne $dst, $src2">;
380 def CMOVNE16rm: Im16<"cmovne",0x45, MRMSrcMem>, TB, OpSize; // if !=, R16 = [mem16]
381 def CMOVNE32rr: I<0x45, MRMSrcReg>, TB, // if !=, R32 = R32
382 II<(ops R32:$dst, R32:$src1, R32:$src2), "cmovne $dst, $src2">;
383 def CMOVNE32rm: Im32<"cmovne",0x45, MRMSrcMem>, TB; // if !=, R32 = [mem32]
385 def CMOVBE16rr: I<0x46, MRMSrcReg>, TB, OpSize, // if <=u, R16 = R16
386 II<(ops R16:$dst, R16:$src1, R16:$src2), "cmovbe $dst, $src2">;
387 def CMOVBE16rm: Im16<"cmovbe",0x46, MRMSrcMem>, TB, OpSize; // if <=u, R16 = [mem16]
388 def CMOVBE32rr: I<0x46, MRMSrcReg>, TB, // if <=u, R32 = R32
389 II<(ops R32:$dst, R32:$src1, R32:$src2), "cmovbe $dst, $src2">;
390 def CMOVBE32rm: Im32<"cmovbe",0x46, MRMSrcMem>, TB; // if <=u, R32 = [mem32]
392 def CMOVA16rr : I<0x47, MRMSrcReg>, TB, OpSize, // if >u, R16 = R16
393 II<(ops R16:$dst, R16:$src1, R16:$src2), "cmova $dst, $src2">;
394 def CMOVA16rm : Im16<"cmova", 0x47, MRMSrcMem>, TB, OpSize; // if >u, R16 = [mem16]
395 def CMOVA32rr : I<0x47, MRMSrcReg>, TB, // if >u, R32 = R32
396 II<(ops R32:$dst, R32:$src1, R32:$src2), "cmova $dst, $src2">;
397 def CMOVA32rm : Im32<"cmova", 0x47, MRMSrcMem>, TB; // if >u, R32 = [mem32]
399 def CMOVS16rr : I<0x48, MRMSrcReg>, TB, OpSize, // if signed, R16 = R16
400 II<(ops R16:$dst, R16:$src1, R16:$src2), "cmovs $dst, $src2">;
401 def CMOVS16rm : Im16<"cmovs", 0x48, MRMSrcMem>, TB, OpSize; // if signed, R16 = [mem16]
402 def CMOVS32rr : I<0x48, MRMSrcReg>, TB, // if signed, R32 = R32
403 II<(ops R32:$dst, R32:$src1, R32:$src2), "cmovs $dst, $src2">;
404 def CMOVS32rm : Im32<"cmovs", 0x48, MRMSrcMem>, TB; // if signed, R32 = [mem32]
406 def CMOVNS16rr: I<0x49, MRMSrcReg>, TB, OpSize, // if !signed, R16 = R16
407 II<(ops R16:$dst, R16:$src1, R16:$src2), "cmovns $dst, $src2">;
408 def CMOVNS16rm: Im16<"cmovns",0x49, MRMSrcMem>, TB, OpSize; // if !signed, R16 = [mem16]
409 def CMOVNS32rr: I<0x49, MRMSrcReg>, TB, // if !signed, R32 = R32
410 II<(ops R32:$dst, R32:$src1, R32:$src2), "cmovns $dst, $src2">;
411 def CMOVNS32rm: Im32<"cmovns",0x49, MRMSrcMem>, TB; // if !signed, R32 = [mem32]
413 def CMOVL16rr : I<0x4C, MRMSrcReg>, TB, OpSize, // if <s, R16 = R16
414 II<(ops R16:$dst, R16:$src1, R16:$src2), "cmovl $dst, $src2">;
415 def CMOVL16rm : Im16<"cmovl", 0x4C, MRMSrcMem>, TB, OpSize; // if <s, R16 = [mem16]
416 def CMOVL32rr : I<0x4C, MRMSrcReg>, TB, // if <s, R32 = R32
417 II<(ops R32:$dst, R32:$src1, R32:$src2), "cmovl $dst, $src2">;
418 def CMOVL32rm : Im32<"cmovl", 0x4C, MRMSrcMem>, TB; // if <s, R32 = [mem32]
420 def CMOVGE16rr: I<0x4D, MRMSrcReg>, TB, OpSize, // if >=s, R16 = R16
421 II<(ops R16:$dst, R16:$src1, R16:$src2), "cmovge $dst, $src2">;
422 def CMOVGE16rm: Im16<"cmovge",0x4D, MRMSrcMem>, TB, OpSize; // if >=s, R16 = [mem16]
423 def CMOVGE32rr: I<0x4D, MRMSrcReg>, TB, // if >=s, R32 = R32
424 II<(ops R32:$dst, R32:$src1, R32:$src2), "cmovge $dst, $src2">;
425 def CMOVGE32rm: Im32<"cmovge",0x4D, MRMSrcMem>, TB; // if >=s, R32 = [mem32]
427 def CMOVLE16rr: I<0x4E, MRMSrcReg>, TB, OpSize, // if <=s, R16 = R16
428 II<(ops R16:$dst, R16:$src1, R16:$src2), "cmovle $dst, $src2">;
429 def CMOVLE16rm: Im16<"cmovle",0x4E, MRMSrcMem>, TB, OpSize; // if <=s, R16 = [mem16]
430 def CMOVLE32rr: I<0x4E, MRMSrcReg>, TB, // if <=s, R32 = R32
431 II<(ops R32:$dst, R32:$src1, R32:$src2), "cmovle $dst, $src2">;
432 def CMOVLE32rm: Im32<"cmovle",0x4E, MRMSrcMem>, TB; // if <=s, R32 = [mem32]
434 def CMOVG16rr : I<0x4F, MRMSrcReg>, TB, OpSize, // if >s, R16 = R16
435 II<(ops R16:$dst, R16:$src1, R16:$src2), "cmovg $dst, $src2">;
436 def CMOVG16rm : Im16<"cmovg", 0x4F, MRMSrcMem>, TB, OpSize; // if >s, R16 = [mem16]
437 def CMOVG32rr : I<0x4F, MRMSrcReg>, TB, // if >s, R32 = R32
438 II<(ops R32:$dst, R32:$src1, R32:$src2), "cmovg $dst, $src2">;
439 def CMOVG32rm : Im32<"cmovg", 0x4F, MRMSrcMem>, TB; // if >s, R32 = [mem32]
441 // unary instructions
442 def NEG8r : I<0xF6, MRM3r>, // R8 = -R8 = 0-R8
443 II<(ops R8:$dst, R8:$src), "neg $dst">;
444 def NEG16r : I<0xF7, MRM3r>, OpSize, // R16 = -R16 = 0-R16
445 II<(ops R16:$dst, R16:$src), "neg $dst">;
446 def NEG32r : I<0xF7, MRM3r>, // R32 = -R32 = 0-R32
447 II<(ops R32:$dst, R32:$src), "neg $dst">;
448 def NEG8m : Im8 <"neg", 0xF6, MRM3m>; // [mem8] = -[mem8] = 0-[mem8]
449 def NEG16m : Im16<"neg", 0xF7, MRM3m>, OpSize; // [mem16] = -[mem16] = 0-[mem16]
450 def NEG32m : Im32<"neg", 0xF7, MRM3m>; // [mem32] = -[mem32] = 0-[mem32]
452 def NOT8r : I<0xF6, MRM2r>, // R8 = ~R8 = R8^-1
453 II<(ops R8:$dst, R8:$src), "not $dst">;
454 def NOT16r : I<0xF7, MRM2r>, OpSize, // R16 = ~R16 = R16^-1
455 II<(ops R16:$dst, R16:$src), "not $dst">;
456 def NOT32r : I<0xF7, MRM2r>, // R32 = ~R32 = R32^-1
457 II<(ops R32:$dst, R32:$src), "not $dst">;
458 def NOT8m : Im8 <"not", 0xF6, MRM2m>; // [mem8] = ~[mem8] = [mem8^-1]
459 def NOT16m : Im16<"not", 0xF7, MRM2m>, OpSize; // [mem16] = ~[mem16] = [mem16^-1]
460 def NOT32m : Im32<"not", 0xF7, MRM2m>; // [mem32] = ~[mem32] = [mem32^-1]
462 def INC8r : I<0xFE, MRM0r>, // ++R8
463 II<(ops R8:$dst, R8:$src), "inc $dst">;
464 def INC16r : I<0xFF, MRM0r>, OpSize, // ++R16
465 II<(ops R16:$dst, R16:$src), "inc $dst">;
466 def INC32r : I<0xFF, MRM0r>, // ++R32
467 II<(ops R32:$dst, R32:$src), "inc $dst">;
468 def INC8m : Im8 <"inc", 0xFE, MRM0m>; // ++R8
469 def INC16m : Im16<"inc", 0xFF, MRM0m>, OpSize; // ++R16
470 def INC32m : Im32<"inc", 0xFF, MRM0m>; // ++R32
472 def DEC8r : I<0xFE, MRM1r>, // --R8
473 II<(ops R8:$dst, R8:$src), "dec $dst">;
474 def DEC16r : I<0xFF, MRM1r>, OpSize, // --R16
475 II<(ops R16:$dst, R16:$src), "dec $dst">;
476 def DEC32r : I<0xFF, MRM1r>, // --R32
477 II<(ops R32:$dst, R32:$src), "dec $dst">;
478 def DEC8m : Im8 <"dec", 0xFE, MRM1m>; // --[mem8]
479 def DEC16m : Im16<"dec", 0xFF, MRM1m>, OpSize; // --[mem16]
480 def DEC32m : Im32<"dec", 0xFF, MRM1m>; // --[mem32]
482 // Logical operators...
483 def AND8rr : I<0x20, MRMDestReg>,
484 II<(ops R8:$dst, R8:$src1, R8:$src2), "and $dst, $src2">;
485 def AND16rr : I<0x21, MRMDestReg>, OpSize,
486 II<(ops R16:$dst, R16:$src1, R16:$src2), "and $dst, $src2">;
487 def AND32rr : I<0x21, MRMDestReg>,
488 II<(ops R32:$dst, R32:$src1, R32:$src2), "and $dst, $src2">;
489 def AND8mr : Im8 <"and", 0x20, MRMDestMem>; // [mem8] &= R8
490 def AND16mr : Im16 <"and", 0x21, MRMDestMem>, OpSize; // [mem16] &= R16
491 def AND32mr : Im32 <"and", 0x21, MRMDestMem>; // [mem32] &= R32
492 def AND8rm : Im8 <"and", 0x22, MRMSrcMem >; // R8 &= [mem8]
493 def AND16rm : Im16 <"and", 0x23, MRMSrcMem >, OpSize; // R16 &= [mem16]
494 def AND32rm : Im32 <"and", 0x23, MRMSrcMem >; // R32 &= [mem32]
496 def AND8ri : Ii8 <0x80, MRM4r, (ops R8:$dst, R8:$src1, i8imm:$src2), "and $dst, $src2">;
497 def AND16ri : Ii16 <0x81, MRM4r, (ops R16:$dst, R16:$src1, i16imm:$src2), "and $dst, $src2">, OpSize;
498 def AND32ri : Ii32 <0x81, MRM4r, (ops R32:$dst, R32:$src1, i32imm:$src2), "and $dst, $src2">;
499 def AND8mi : Im8i8 <"and", 0x80, MRM4m >; // [mem8] &= imm8
500 def AND16mi : Im16i16<"and", 0x81, MRM4m >, OpSize; // [mem16] &= imm16
501 def AND32mi : Im32i32<"and", 0x81, MRM4m >; // [mem32] &= imm32
503 def AND16ri8 : Ii8 <0x83, MRM4r, (ops R16:$dst, R16:$src1, i8imm:$src2), "and $dst, $src2" >, OpSize; // R16 &= imm8
504 def AND32ri8 : Ii8 <0x83, MRM4r, (ops R32:$dst, R32:$src1, i8imm:$src2), "and $dst, $src2">; // R32 &= imm8
505 def AND16mi8 : Im16i8<"and", 0x83, MRM4m >, OpSize; // [mem16] &= imm8
506 def AND32mi8 : Im32i8<"and", 0x83, MRM4m >; // [mem32] &= imm8
509 def OR8rr : I<0x08, MRMDestReg>,
510 II<(ops R8:$dst, R8:$src1, R8:$src2), "or $dst, $src2">;
511 def OR16rr : I<0x09, MRMDestReg>, OpSize,
512 II<(ops R16:$dst, R16:$src1, R16:$src2), "or $dst, $src2">;
513 def OR32rr : I<0x09, MRMDestReg>,
514 II<(ops R32:$dst, R32:$src1, R32:$src2), "or $dst, $src2">;
515 def OR8mr : Im8 <"or" , 0x08, MRMDestMem>; // [mem8] |= R8
516 def OR16mr : Im16 <"or" , 0x09, MRMDestMem>, OpSize; // [mem16] |= R16
517 def OR32mr : Im32 <"or" , 0x09, MRMDestMem>; // [mem32] |= R32
518 def OR8rm : Im8 <"or" , 0x0A, MRMSrcMem >; // R8 |= [mem8]
519 def OR16rm : Im16 <"or" , 0x0B, MRMSrcMem >, OpSize; // R16 |= [mem16]
520 def OR32rm : Im32 <"or" , 0x0B, MRMSrcMem >; // R32 |= [mem32]
522 def OR8ri : Ii8 <0x80, MRM1r, (ops R8:$dst, R8:$src1, i8imm:$src2), "or $dst, $src2">;
523 def OR16ri : Ii16 <0x81, MRM1r, (ops R16:$dst, R16:$src1, i16imm:$src2), "or $dst, $src2">, OpSize;
524 def OR32ri : Ii32 <0x81, MRM1r, (ops R32:$dst, R32:$src1, i32imm:$src2), "or $dst, $src2">;
525 def OR8mi : Im8i8 <"or" , 0x80, MRM1m >; // [mem8] |= imm8
526 def OR16mi : Im16i16<"or" , 0x81, MRM1m >, OpSize; // [mem16] |= imm16
527 def OR32mi : Im32i32<"or" , 0x81, MRM1m >; // [mem32] |= imm32
529 def OR16ri8 : Ii8 <0x83, MRM1r, (ops R8:$dst, R8:$src1, i8imm:$src2), "or $dst, $src2">, OpSize; // R16 |= imm8
530 def OR32ri8 : Ii8 <0x83, MRM1r, (ops R32:$dst, R32:$src1, i8imm:$src2), "or $dst, $src2">; // R32 |= imm8
531 def OR16mi8 : Im16i8<"or" , 0x83, MRM1m >, OpSize; // [mem16] |= imm8
532 def OR32mi8 : Im32i8<"or" , 0x83, MRM1m >; // [mem32] |= imm8
535 def XOR8rr : I<0x30, MRMDestReg>,
536 II<(ops R8:$dst, R8:$src1, R8:$src2), "xor $dst, $src2">;
537 def XOR16rr : I<0x31, MRMDestReg>, OpSize,
538 II<(ops R16:$dst, R16:$src1, R16:$src2), "xor $dst, $src2">;
539 def XOR32rr : I<0x31, MRMDestReg>,
540 II<(ops R32:$dst, R32:$src1, R32:$src2), "xor $dst, $src2">;
541 def XOR8mr : Im8 <"xor", 0x30, MRMDestMem>; // [mem8] ^= R8
542 def XOR16mr : Im16 <"xor", 0x31, MRMDestMem>, OpSize; // [mem16] ^= R16
543 def XOR32mr : Im32 <"xor", 0x31, MRMDestMem>; // [mem32] ^= R32
544 def XOR8rm : Im8 <"xor", 0x32, MRMSrcMem >; // R8 ^= [mem8]
545 def XOR16rm : Im16 <"xor", 0x33, MRMSrcMem >, OpSize; // R16 ^= [mem16]
546 def XOR32rm : Im32 <"xor", 0x33, MRMSrcMem >; // R32 ^= [mem32]
548 def XOR8ri : Ii8 <0x80, MRM6r, (ops R8:$dst, R8:$src1, i8imm:$src2), "xor $dst, $src2">;
549 def XOR16ri : Ii16 <0x81, MRM6r, (ops R16:$dst, R16:$src1, i16imm:$src2), "xor $dst, $src2">, OpSize;
550 def XOR32ri : Ii32 <0x81, MRM6r, (ops R32:$dst, R32:$src1, i32imm:$src2), "xor $dst, $src2">;
551 def XOR8mi : Im8i8 <"xor", 0x80, MRM6m >; // [mem8] ^= R8
552 def XOR16mi : Im16i16<"xor", 0x81, MRM6m >, OpSize; // [mem16] ^= R16
553 def XOR32mi : Im32i32<"xor", 0x81, MRM6m >; // [mem32] ^= R32
555 def XOR16ri8 : Ii8 <0x83, MRM6r, (ops R16:$dst, R16:$src1, i8imm:$src2), "xor $dst, $src2">, OpSize; // R16 ^= imm8
556 def XOR32ri8 : Ii8 <0x83, MRM6r, (ops R32:$dst, R32:$src1, i8imm:$src2), "xor $dst, $src2">; // R32 ^= imm8
557 def XOR16mi8 : Im16i8<"xor", 0x83, MRM6m >, OpSize; // [mem16] ^= imm8
558 def XOR32mi8 : Im32i8<"xor", 0x83, MRM6m >; // [mem32] ^= imm8
560 // Shift instructions
561 // FIXME: provide shorter instructions when imm8 == 1
562 let Uses = [CL], printImplicitUsesAfter = 1 in {
563 def SHL8rCL : I<0xD2, MRM4r> , // R8 <<= cl
564 II<(ops R8:$dst, R8:$src), "shl $dst, %CL">;
565 def SHL16rCL : I<0xD3, MRM4r>, OpSize, // R16 <<= cl
566 II<(ops R16:$dst, R16:$src), "shl $dst, %CL">;
567 def SHL32rCL : I<0xD3, MRM4r> , // R32 <<= cl
568 II<(ops R32:$dst, R32:$src), "shl $dst, %CL">;
569 def SHL8mCL : Im8 <"shl", 0xD2, MRM4m > ; // [mem8] <<= cl
570 def SHL16mCL : Im16 <"shl", 0xD3, MRM4m >, OpSize; // [mem16] <<= cl
571 def SHL32mCL : Im32 <"shl", 0xD3, MRM4m > ; // [mem32] <<= cl
574 def SHL8ri : Ii8 <0xC0, MRM4r, (ops R8:$dst, R8:$src1, i8imm:$src2), "shl $dst, $src2">; // R8 <<= imm8
575 def SHL16ri : Ii8 <0xC1, MRM4r, (ops R16:$dst, R16:$src1, i8imm:$src2), "shl $dst, $src2">, OpSize; // R16 <<= imm8
576 def SHL32ri : Ii8 <0xC1, MRM4r, (ops R32:$dst, R32:$src1, i8imm:$src2), "shl $dst, $src2">; // R32 <<= imm8
577 def SHL8mi : Im8i8 <"shl", 0xC0, MRM4m >; // [mem8] <<= imm8
578 def SHL16mi : Im16i8<"shl", 0xC1, MRM4m >, OpSize; // [mem16] <<= imm8
579 def SHL32mi : Im32i8<"shl", 0xC1, MRM4m >; // [mem32] <<= imm8
581 let Uses = [CL], printImplicitUsesAfter = 1 in {
582 def SHR8rCL : I<0xD2, MRM5r> , // R8 >>= cl
583 II<(ops R8:$dst, R8:$src), "shr $dst, %CL">;
584 def SHR16rCL : I<0xD3, MRM5r>, OpSize, // R16 >>= cl
585 II<(ops R16:$dst, R16:$src), "shr $dst, %CL">;
586 def SHR32rCL : I<0xD3, MRM5r> , // R32 >>= cl
587 II<(ops R32:$dst, R32:$src), "shr $dst, %CL">;
588 def SHR8mCL : Im8 <"shr", 0xD2, MRM5m > ; // [mem8] >>= cl
589 def SHR16mCL : Im16 <"shr", 0xD3, MRM5m >, OpSize; // [mem16] >>= cl
590 def SHR32mCL : Im32 <"shr", 0xD3, MRM5m > ; // [mem32] >>= cl
593 def SHR8ri : Ii8 <0xC0, MRM5r, (ops R8:$dst, R8:$src1, i8imm:$src2), "shr $dst, $src2">; // R8 >>= imm8
594 def SHR16ri : Ii8 <0xC1, MRM5r, (ops R16:$dst, R16:$src1, i8imm:$src2), "shr $dst, $src2">, OpSize; // R16 >>= imm8
595 def SHR32ri : Ii8 <0xC1, MRM5r, (ops R32:$dst, R32:$src1, i8imm:$src2), "shr $dst, $src2">; // R32 >>= imm8
596 def SHR8mi : Im8i8 <"shr", 0xC0, MRM5m >; // [mem8] >>= imm8
597 def SHR16mi : Im16i8<"shr", 0xC1, MRM5m >, OpSize; // [mem16] >>= imm8
598 def SHR32mi : Im32i8<"shr", 0xC1, MRM5m >; // [mem32] >>= imm8
600 let Uses = [CL], printImplicitUsesAfter = 1 in {
601 def SAR8rCL : I<0xD2, MRM7r>, // R8 >>>= cl
602 II<(ops R8:$dst, R8:$src), "sar $dst, %CL">;
603 def SAR16rCL : I<0xD3, MRM7r>, OpSize, // R16 >>>= cl
604 II<(ops R16:$dst, R16:$src), "sar $dst, %CL">;
605 def SAR32rCL : I<0xD3, MRM7r>, // R32 >>>= cl
606 II<(ops R32:$dst, R32:$src), "sar $dst, %CL">;
607 def SAR8mCL : Im8 <"sar", 0xD2, MRM7m > ; // [mem8] >>>= cl
608 def SAR16mCL : Im16 <"sar", 0xD3, MRM7m >, OpSize; // [mem16] >>>= cl
609 def SAR32mCL : Im32 <"sar", 0xD3, MRM7m > ; // [mem32] >>>= cl
612 def SAR8ri : Ii8 <0xC0, MRM7r, (ops R8:$dst, R8:$src1, i8imm:$src2), "sar $dst, $src2">; // R8 >>>= imm8
613 def SAR16ri : Ii8 <0xC1, MRM7r, (ops R16:$dst, R16:$src1, i8imm:$src2), "sar $dst, $src2">, OpSize; // R16 >>>= imm8
614 def SAR32ri : Ii8 <0xC1, MRM7r, (ops R32:$dst, R32:$src1, i8imm:$src2), "sar $dst, $src2">; // R32 >>>= imm8
615 def SAR8mi : Im8i8 <"sar", 0xC0, MRM7m >; // [mem8] >>>= imm8
616 def SAR16mi : Im16i8<"sar", 0xC1, MRM7m >, OpSize; // [mem16] >>>= imm8
617 def SAR32mi : Im32i8<"sar", 0xC1, MRM7m >; // [mem32] >>>= imm8
619 let Uses = [CL], printImplicitUsesAfter = 1 in {
620 def SHLD32rrCL : I<0xA5, MRMDestReg>, TB, // R32 <<= R32,R32 cl
621 II<(ops R32:$dst, R32:$src1, R32:$src2), "shld $dst, $src2, %CL">;
622 def SHLD32mrCL : Im32 <"shld", 0xA5, MRMDestMem>, TB; // [mem32] <<= [mem32],R32 cl
623 def SHRD32rrCL : I<0xAD, MRMDestReg>, TB, // R32 >>= R32,R32 cl
624 II<(ops R32:$dst, R32:$src1, R32:$src2), "shrd $dst, $src2, %CL">;
625 def SHRD32mrCL : Im32 <"shrd", 0xAD, MRMDestMem>, TB; // [mem32] >>= [mem32],R32 cl
628 def SHLD32rri8 : Ii8 <0xA4, MRMDestReg, (ops R8:$dst, R8:$src1, i8imm:$src2), "shld $dst, $src2">, TB; // R32 <<= R32,R32 imm8
629 def SHLD32mri8 : Im32i8<"shld", 0xA4, MRMDestMem>, TB; // [mem32] <<= [mem32],R32 imm8
630 def SHRD32rri8 : Ii8 <0xAC, MRMDestReg, (ops R16:$dst, R16:$src1, i8imm:$src2), "shrd $dst, $src2">, TB; // R32 >>= R32,R32 imm8
631 def SHRD32mri8 : Im32i8<"shrd", 0xAC, MRMDestMem>, TB; // [mem32] >>= [mem32],R32 imm8
635 def ADD8rr : I<0x00, MRMDestReg>, II<(ops R8:$dst, R8:$src1, R8:$src2), "add $dst, $src2">;
636 def ADD16rr : I<0x01, MRMDestReg>, OpSize, II<(ops R16:$dst, R16:$src1, R16:$src2), "add $dst, $src2">;
637 def ADD32rr : I<0x01, MRMDestReg>, II<(ops R32:$dst, R32:$src1, R32:$src2), "add $dst, $src2">;
638 def ADD8mr : Im8 <"add", 0x00, MRMDestMem>; // [mem8] += R8
639 def ADD16mr : Im16 <"add", 0x01, MRMDestMem>, OpSize; // [mem16] += R16
640 def ADD32mr : Im32 <"add", 0x01, MRMDestMem>; // [mem32] += R32
641 def ADD8rm : Im8 <"add", 0x02, MRMSrcMem >; // R8 += [mem8]
642 def ADD16rm : Im16 <"add", 0x03, MRMSrcMem >, OpSize; // R16 += [mem16]
643 def ADD32rm : Im32 <"add", 0x03, MRMSrcMem >; // R32 += [mem32]
645 def ADD8ri : Ii8 <0x80, MRM0r, (ops R8:$dst, R8:$src1, i8imm:$src2), "add $dst, $src2">;
646 def ADD16ri : Ii16 <0x81, MRM0r, (ops R16:$dst, R16:$src1, i16imm:$src2), "add $dst, $src2">, OpSize;
647 def ADD32ri : Ii32 <0x81, MRM0r, (ops R32:$dst, R32:$src1, i32imm:$src2), "add $dst, $src2">;
648 def ADD8mi : Im8i8 <"add", 0x80, MRM0m >; // [mem8] += I8
649 def ADD16mi : Im16i16<"add", 0x81, MRM0m >, OpSize; // [mem16] += I16
650 def ADD32mi : Im32i32<"add", 0x81, MRM0m >; // [mem32] += I32
652 def ADD16ri8 : Ii8 <0x83, MRM0r, (ops R16:$dst, R16:$src1, i8imm:$src2), "add $dst, $src2">, OpSize;
653 def ADD32ri8 : Ii8 <0x83, MRM0r, (ops R32:$dst, R32:$src1, i8imm:$src2), "add $dst, $src2">;
654 def ADD16mi8 : Im16i8<"add", 0x83, MRM0m >, OpSize; // [mem16] += I8
655 def ADD32mi8 : Im32i8<"add", 0x83, MRM0m >; // [mem32] += I8
657 def ADC32rr : I<0x11, MRMDestReg>, // R32 += R32+Carry
658 II<(ops R32:$dst, R32:$src1, R32:$src2), "adc $dst, $src2">;
659 def ADC32mr : Im32 <"adc", 0x11, MRMDestMem>; // [mem32] += R32+Carry
660 def ADC32rm : Im32 <"adc", 0x13, MRMSrcMem >; // R32 += [mem32]+Carry
661 def ADC32ri : Ii32 <0x81, MRM2r, (ops R32:$dst, R32:$src1, i32imm:$src2), "adc $dst, $src2">; // R32 += I32+Carry
662 def ADC32ri8 : Ii8 <0x83, MRM2r, (ops R32:$dst, R32:$src1, i8imm:$src2), "adc $dst, $src2">; // R32 += I8+Carry
663 def ADC32mi : Im32i32<"adc", 0x81, MRM2m >; // [mem32] += I32+Carry
664 def ADC32mi8 : Im32i8 <"adc", 0x83, MRM2m >; // [mem32] += I8+Carry
666 def SUB8rr : I<0x28, MRMDestReg>, II<(ops R8:$dst, R8:$src1, R8:$src2), "sub $dst, $src2">;
667 def SUB16rr : I<0x29, MRMDestReg>, OpSize, II<(ops R16:$dst, R16:$src1, R16:$src2), "sub $dst, $src2">;
668 def SUB32rr : I<0x29, MRMDestReg>, II<(ops R32:$dst, R32:$src1, R32:$src2), "sub $dst, $src2">;
669 def SUB8mr : Im8 <"sub", 0x28, MRMDestMem>; // [mem8] -= R8
670 def SUB16mr : Im16 <"sub", 0x29, MRMDestMem>, OpSize; // [mem16] -= R16
671 def SUB32mr : Im32 <"sub", 0x29, MRMDestMem>; // [mem32] -= R32
672 def SUB8rm : Im8 <"sub", 0x2A, MRMSrcMem >; // R8 -= [mem8]
673 def SUB16rm : Im16 <"sub", 0x2B, MRMSrcMem >, OpSize; // R16 -= [mem16]
674 def SUB32rm : Im32 <"sub", 0x2B, MRMSrcMem >; // R32 -= [mem32]
676 def SUB8ri : Ii8 <0x80, MRM5r, (ops R8:$dst, R8:$src1, i8imm:$src2), "sub $dst, $src2">;
677 def SUB16ri : Ii16 <0x81, MRM5r, (ops R16:$dst, R16:$src1, i16imm:$src2), "sub $dst, $src2">, OpSize;
678 def SUB32ri : Ii32 <0x81, MRM5r, (ops R32:$dst, R32:$src1, i32imm:$src2), "sub $dst, $src2">;
679 def SUB8mi : Im8i8 <"sub", 0x80, MRM5m >; // [mem8] -= I8
680 def SUB16mi : Im16i16<"sub", 0x81, MRM5m >, OpSize; // [mem16] -= I16
681 def SUB32mi : Im32i32<"sub", 0x81, MRM5m >; // [mem32] -= I32
683 def SUB16ri8 : Ii8 <0x83, MRM5r, (ops R16:$dst, R16:$src1, i8imm:$src2), "sub $dst, $src2">, OpSize;
684 def SUB32ri8 : Ii8 <0x83, MRM5r, (ops R32:$dst, R32:$src1, i8imm:$src2), "sub $dst, $src2">;
685 def SUB16mi8 : Im16i8<"sub", 0x83, MRM5m >, OpSize; // [mem16] -= I8
686 def SUB32mi8 : Im32i8<"sub", 0x83, MRM5m >; // [mem32] -= I8
688 def SBB32rr : I<0x19, MRMDestReg>, // R32 -= R32+Carry
689 II<(ops R32:$dst, R32:$src1, R32:$src2), "adc $dst, $src2">;
690 def SBB32mr : Im32 <"sbb", 0x19, MRMDestMem>; // [mem32] -= R32+Carry
691 def SBB32rm : Im32 <"sbb", 0x1B, MRMSrcMem >; // R32 -= [mem32]+Carry
692 def SBB32ri : Ii32 <0x81, MRM3r, (ops R32:$dst, R32:$src1, i32imm:$src2), "sbb $dst, $src2">; // R32 -= I32+Carry
693 def SBB32ri8 : Ii8 <0x83, MRM3r, (ops R32:$dst, R32:$src1, i8imm:$src2), "sbb $dst, $src2">; // R32 -= I8+Carry
694 def SBB32mi : Im32i32<"sbb", 0x81, MRM3m >; // [mem32] -= I32+Carry
695 def SBB32mi8 : Im32i8 <"sbb", 0x83, MRM3m >; // [mem32] -= I8+Carry
697 def IMUL16rr : I<0xAF, MRMSrcReg>, TB, OpSize,
698 II<(ops R16:$dst, R16:$src1, R16:$src2), "imul $dst, $src2">;
699 def IMUL32rr : I<0xAF, MRMSrcReg>, TB,
700 II<(ops R32:$dst, R32:$src1, R32:$src2), "imul $dst, $src2">;
701 def IMUL16rm : Im16 <"imul", 0xAF, MRMSrcMem>, TB, OpSize;
702 def IMUL32rm : Im32 <"imul", 0xAF, MRMSrcMem>, TB ;
704 } // end Two Address instructions
706 // These are suprisingly enough not two address instructions!
707 def IMUL16rri : Ii16 <0x69, MRMSrcReg, (ops R16:$dst, R16:$src1, i16imm:$src2), "imul $dst, $src1, $src2">, OpSize; // R16 = R16*I16
708 def IMUL32rri : Ii32 <0x69, MRMSrcReg, (ops R32:$dst, R32:$src1, i32imm:$src2), "imul $dst, $src1, $src2">; // R32 = R32*I32
709 def IMUL16rri8 : Ii8 <0x6B, MRMSrcReg, (ops R16:$dst, R16:$src1, i8imm:$src2), "imul $dst, $src1, $src2">, OpSize; // R16 = R16*I8
710 def IMUL32rri8 : Ii8 <0x6B, MRMSrcReg, (ops R32:$dst, R32:$src1, i8imm:$src2), "imul $dst, $src1, $src2">; // R32 = R32*I8
711 def IMUL16rmi : Im16i16<"imul",0x69, MRMSrcMem>, OpSize; // R16 = [mem16]*I16
712 def IMUL32rmi : Im32i32<"imul",0x69, MRMSrcMem>; // R32 = [mem32]*I32
713 def IMUL16rmi8 : Im16i8<"imul", 0x6B, MRMSrcMem>, OpSize; // R16 = [mem16]*I8
714 def IMUL32rmi8 : Im32i8<"imul", 0x6B, MRMSrcMem>; // R32 = [mem32]*I8
716 //===----------------------------------------------------------------------===//
717 // Test instructions are just like AND, except they don't generate a result.
718 def TEST8rr : I<0x84, MRMDestReg>, // flags = R8 & R8
719 II<(ops R8:$src1, R8:$src2), "test $src1, $src2">;
720 def TEST16rr : I<0x85, MRMDestReg>, OpSize, // flags = R16 & R16
721 II<(ops R16:$src1, R16:$src2), "test $src1, $src2">;
722 def TEST32rr : I<0x85, MRMDestReg>, // flags = R32 & R32
723 II<(ops R32:$src1, R32:$src2), "test $src1, $src2">;
724 def TEST8mr : Im8 <"test", 0x84, MRMDestMem>; // flags = [mem8] & R8
725 def TEST16mr : Im16 <"test", 0x85, MRMDestMem>, OpSize; // flags = [mem16] & R16
726 def TEST32mr : Im32 <"test", 0x85, MRMDestMem>; // flags = [mem32] & R32
727 def TEST8rm : Im8 <"test", 0x84, MRMSrcMem >; // flags = R8 & [mem8]
728 def TEST16rm : Im16 <"test", 0x85, MRMSrcMem >, OpSize; // flags = R16 & [mem16]
729 def TEST32rm : Im32 <"test", 0x85, MRMSrcMem >; // flags = R32 & [mem32]
731 def TEST8ri : Ii8 <0xF6, MRM0r, (ops R8:$dst, i8imm:$src), "test $dst, $src">; // flags = R8 & imm8
732 def TEST16ri : Ii16 <0xF7, MRM0r, (ops R16:$dst, i16imm:$src), "test $dst, $src">, OpSize; // flags = R16 & imm16
733 def TEST32ri : Ii32 <0xF7, MRM0r, (ops R32:$dst, i32imm:$src), "test $dst, $src">; // flags = R32 & imm32
734 def TEST8mi : Im8i8 <"test", 0xF6, MRM0m >; // flags = [mem8] & imm8
735 def TEST16mi : Im16i16<"test", 0xF7, MRM0m >, OpSize; // flags = [mem16] & imm16
736 def TEST32mi : Im32i32<"test", 0xF7, MRM0m >; // flags = [mem32] & imm32
740 // Condition code ops, incl. set if equal/not equal/...
741 def SAHF : I<0x9E, RawFrm>, Imp<[AH],[]>, // flags = AH
743 def LAHF : I<0x9F, RawFrm>, Imp<[],[AH]>, // AH = flags
746 def SETBr : I<0x92, MRM0r>, TB, // R8 = < unsign
747 II<(ops R8:$dst), "setb $dst">;
748 def SETBm : Im8<"setb" , 0x92, MRM0m>, TB; // [mem8] = < unsign
749 def SETAEr : I<0x93, MRM0r>, TB, // R8 = >= unsign
750 II<(ops R8:$dst), "setae $dst">;
751 def SETAEm : Im8<"setae", 0x93, MRM0m>, TB; // [mem8] = >= unsign
752 def SETEr : I<0x94, MRM0r>, TB, // R8 = ==
753 II<(ops R8:$dst), "sete $dst">;
754 def SETEm : Im8<"sete" , 0x94, MRM0m>, TB; // [mem8] = ==
755 def SETNEr : I<0x95, MRM0r>, TB, // R8 = !=
756 II<(ops R8:$dst), "setne $dst">;
757 def SETNEm : Im8<"setne", 0x95, MRM0m>, TB; // [mem8] = !=
758 def SETBEr : I<0x96, MRM0r>, TB, // R8 = <= unsign
759 II<(ops R8:$dst), "setbe $dst">;
760 def SETBEm : Im8<"setbe", 0x96, MRM0m>, TB; // [mem8] = <= unsign
761 def SETAr : I<0x97, MRM0r>, TB, // R8 = > signed
762 II<(ops R8:$dst), "seta $dst">;
763 def SETAm : Im8<"seta" , 0x97, MRM0m>, TB; // [mem8] = > signed
764 def SETSr : I<0x98, MRM0r>, TB, // R8 = <sign bit>
765 II<(ops R8:$dst), "sets $dst">;
766 def SETSm : Im8<"sets" , 0x98, MRM0m>, TB; // [mem8] = <sign bit>
767 def SETNSr : I<0x99, MRM0r>, TB, // R8 = !<sign bit>
768 II<(ops R8:$dst), "setns $dst">;
769 def SETNSm : Im8<"setns", 0x99, MRM0m>, TB; // [mem8] = !<sign bit>
770 def SETPr : I<0x9A, MRM0r>, TB, // R8 = parity
771 II<(ops R8:$dst), "setp $dst">;
772 def SETPm : Im8<"setp" , 0x9A, MRM0m>, TB; // [mem8] = parity
773 def SETLr : I<0x9C, MRM0r>, TB, // R8 = < signed
774 II<(ops R8:$dst), "setl $dst">;
775 def SETLm : Im8<"setl" , 0x9C, MRM0m>, TB; // [mem8] = < signed
776 def SETGEr : I<0x9D, MRM0r>, TB, // R8 = >= signed
777 II<(ops R8:$dst), "setge $dst">;
778 def SETGEm : Im8<"setge", 0x9D, MRM0m>, TB; // [mem8] = >= signed
779 def SETLEr : I<0x9E, MRM0r>, TB, // R8 = <= signed
780 II<(ops R8:$dst), "setle $dst">;
781 def SETLEm : Im8<"setle", 0x9E, MRM0m>, TB; // [mem8] = <= signed
782 def SETGr : I<0x9F, MRM0r>, TB, // R8 = < signed
783 II<(ops R8:$dst), "setg $dst">;
784 def SETGm : Im8<"setg" , 0x9F, MRM0m>, TB; // [mem8] = < signed
786 // Integer comparisons
787 def CMP8rr : I<0x38, MRMDestReg>, // compare R8, R8
788 II<(ops R8:$src1, R8:$src2), "cmp $src1, $src2">;
789 def CMP16rr : I<0x39, MRMDestReg>, OpSize, // compare R16, R16
790 II<(ops R16:$src1, R16:$src2), "cmp $src1, $src2">;
791 def CMP32rr : I<0x39, MRMDestReg>, // compare R32, R32
792 II<(ops R32:$src1, R32:$src2), "cmp $src1, $src2">;
793 def CMP8mr : Im8 <"cmp", 0x38, MRMDestMem>; // compare [mem8], R8
794 def CMP16mr : Im16 <"cmp", 0x39, MRMDestMem>, OpSize; // compare [mem16], R16
795 def CMP32mr : Im32 <"cmp", 0x39, MRMDestMem>; // compare [mem32], R32
796 def CMP8rm : Im8 <"cmp", 0x3A, MRMSrcMem >; // compare R8, [mem8]
797 def CMP16rm : Im16 <"cmp", 0x3B, MRMSrcMem >, OpSize; // compare R16, [mem16]
798 def CMP32rm : Im32 <"cmp", 0x3B, MRMSrcMem >; // compare R32, [mem32]
799 def CMP8ri : Ii8 <0x80, MRM7r, (ops R16:$dst, i8imm:$src), "cmp $dst, $src">; // compare R8, imm8
800 def CMP16ri : Ii16 <0x81, MRM7r, (ops R16:$dst, i16imm:$src), "cmp $dst, $src">, OpSize; // compare R16, imm16
801 def CMP32ri : Ii32 <0x81, MRM7r, (ops R32:$dst, i32imm:$src), "cmp $dst, $src">; // compare R32, imm32
802 def CMP8mi : Im8i8 <"cmp", 0x80, MRM7m >; // compare [mem8], imm8
803 def CMP16mi : Im16i16<"cmp", 0x81, MRM7m >, OpSize; // compare [mem16], imm16
804 def CMP32mi : Im32i32<"cmp", 0x81, MRM7m >; // compare [mem32], imm32
806 // Sign/Zero extenders
807 def MOVSX16rr8 : I<0xBE, MRMSrcReg>, TB, OpSize, // R16 = signext(R8)
808 II<(ops R16:$dst, R8:$src), "movsx $dst, $src">;
809 def MOVSX32rr8 : I<0xBE, MRMSrcReg>, TB, // R32 = signext(R8)
810 II<(ops R32:$dst, R8:$src), "movsx $dst, $src">;
811 def MOVSX32rr16: I<0xBF, MRMSrcReg>, TB, // R32 = signext(R16)
812 II<(ops R32:$dst, R16:$src), "movsx $dst, $src">;
813 def MOVSX16rm8 : Im8 <"movsx", 0xBE, MRMSrcMem>, TB, OpSize; // R16 = signext([mem8])
814 def MOVSX32rm8 : Im8 <"movsx", 0xBE, MRMSrcMem>, TB; // R32 = signext([mem8])
815 def MOVSX32rm16: Im16<"movsx", 0xBF, MRMSrcMem>, TB; // R32 = signext([mem16])
817 def MOVZX16rr8 : I<0xB6, MRMSrcReg>, TB, OpSize, // R16 = zeroext(R8)
818 II<(ops R16:$dst, R8:$src), "movzx $dst, $src">;
819 def MOVZX32rr8 : I<0xB6, MRMSrcReg>, TB, // R32 = zeroext(R8)
820 II<(ops R32:$dst, R8:$src), "movzx $dst, $src">;
821 def MOVZX32rr16: I<0xB7, MRMSrcReg>, TB, // R32 = zeroext(R16)
822 II<(ops R32:$dst, R16:$src), "movzx $dst, $src">;
823 def MOVZX16rm8 : Im8 <"movzx", 0xB6, MRMSrcMem>, TB, OpSize; // R16 = zeroext([mem8])
824 def MOVZX32rm8 : Im8 <"movzx", 0xB6, MRMSrcMem>, TB; // R32 = zeroext([mem8])
825 def MOVZX32rm16: Im16<"movzx", 0xB7, MRMSrcMem>, TB; // R32 = zeroext([mem16])
828 //===----------------------------------------------------------------------===//
829 // Floating point support
830 //===----------------------------------------------------------------------===//
832 // FIXME: These need to indicate mod/ref sets for FP regs... & FP 'TOP'
834 // Floating point instruction templates
835 class FPInst<string n, bits<8> o, Format F, FPFormat fp, MemType m, ImmType i>
836 : X86Inst<n, o, F, m, i> { let FPForm = fp; let FPFormBits = FPForm.Value; }
838 class FPI<string n, bits<8> o, Format F, FPFormat fp> : FPInst<n, o, F, fp, NoMem, NoImm>;
840 class FPIM<string n, bits<8> o, Format F, FPFormat fp, MemType m> : FPInst<n, o, F, fp, m, NoImm>;
842 class FPI16m<string n, bits<8> o, Format F, FPFormat fp> : FPIM<n, o, F, fp, Mem16>;
843 class FPI32m<string n, bits<8> o, Format F, FPFormat fp> : FPIM<n, o, F, fp, Mem32>;
844 class FPI64m<string n, bits<8> o, Format F, FPFormat fp> : FPIM<n, o, F, fp, Mem64>;
845 class FPI80m<string n, bits<8> o, Format F, FPFormat fp> : FPIM<n, o, F, fp, Mem80>;
847 // Pseudo instructions for floating point. We use these pseudo instructions
848 // because they can be expanded by the fp spackifier into one of many different
849 // forms of instructions for doing these operations. Until the stackifier runs,
850 // we prefer to be abstract.
851 def FpMOV : FPI<"", 0, Pseudo, SpecialFP>; // f1 = fmov f2
852 def FpADD : FPI<"", 0, Pseudo, TwoArgFP>; // f1 = fadd f2, f3
853 def FpSUB : FPI<"", 0, Pseudo, TwoArgFP>; // f1 = fsub f2, f3
854 def FpMUL : FPI<"", 0, Pseudo, TwoArgFP>; // f1 = fmul f2, f3
855 def FpDIV : FPI<"", 0, Pseudo, TwoArgFP>; // f1 = fdiv f2, f3
857 def FpGETRESULT : FPI<"",0, Pseudo, SpecialFP>; // FPR = ST(0)
858 def FpSETRESULT : FPI<"",0, Pseudo, SpecialFP>; // ST(0) = FPR
860 // FADD reg, mem: Before stackification, these are represented by: R1 = FADD* R2, [mem]
861 def FADD32m : FPI32m<"fadd", 0xD8, MRM0m, OneArgFPRW>; // ST(0) = ST(0) + [mem32real]
862 def FADD64m : FPI64m<"fadd", 0xDC, MRM0m, OneArgFPRW>; // ST(0) = ST(0) + [mem64real]
863 def FIADD16m : FPI16m<"fiadd", 0xDE, MRM0m, OneArgFPRW>; // ST(0) = ST(0) + [mem16int]
864 def FIADD32m : FPI32m<"fiadd", 0xDA, MRM0m, OneArgFPRW>; // ST(0) = ST(0) + [mem32int]
866 // FMUL reg, mem: Before stackification, these are represented by: R1 = FMUL* R2, [mem]
867 def FMUL32m : FPI32m<"fmul", 0xD8, MRM1m, OneArgFPRW>; // ST(0) = ST(0) * [mem32real]
868 def FMUL64m : FPI64m<"fmul", 0xDC, MRM1m, OneArgFPRW>; // ST(0) = ST(0) * [mem64real]
869 def FIMUL16m : FPI16m<"fimul", 0xDE, MRM1m, OneArgFPRW>; // ST(0) = ST(0) * [mem16int]
870 def FIMUL32m : FPI32m<"fimul", 0xDA, MRM1m, OneArgFPRW>; // ST(0) = ST(0) * [mem32int]
872 // FSUB reg, mem: Before stackification, these are represented by: R1 = FSUB* R2, [mem]
873 def FSUB32m : FPI32m<"fsub", 0xD8, MRM4m, OneArgFPRW>; // ST(0) = ST(0) - [mem32real]
874 def FSUB64m : FPI64m<"fsub", 0xDC, MRM4m, OneArgFPRW>; // ST(0) = ST(0) - [mem64real]
875 def FISUB16m : FPI16m<"fisub", 0xDE, MRM4m, OneArgFPRW>; // ST(0) = ST(0) - [mem16int]
876 def FISUB32m : FPI32m<"fisub", 0xDA, MRM4m, OneArgFPRW>; // ST(0) = ST(0) - [mem32int]
878 // FSUBR reg, mem: Before stackification, these are represented by: R1 = FSUBR* R2, [mem]
879 // Note that the order of operands does not reflect the operation being performed.
880 def FSUBR32m : FPI32m<"fsubr", 0xD8, MRM5m, OneArgFPRW>; // ST(0) = [mem32real] - ST(0)
881 def FSUBR64m : FPI64m<"fsubr", 0xDC, MRM5m, OneArgFPRW>; // ST(0) = [mem64real] - ST(0)
882 def FISUBR16m : FPI16m<"fisubr", 0xDE, MRM5m, OneArgFPRW>; // ST(0) = [mem16int] - ST(0)
883 def FISUBR32m : FPI32m<"fisubr", 0xDA, MRM5m, OneArgFPRW>; // ST(0) = [mem32int] - ST(0)
885 // FDIV reg, mem: Before stackification, these are represented by: R1 = FDIV* R2, [mem]
886 def FDIV32m : FPI32m<"fdiv", 0xD8, MRM6m, OneArgFPRW>; // ST(0) = ST(0) / [mem32real]
887 def FDIV64m : FPI64m<"fdiv", 0xDC, MRM6m, OneArgFPRW>; // ST(0) = ST(0) / [mem64real]
888 def FIDIV16m : FPI16m<"fidiv", 0xDE, MRM6m, OneArgFPRW>; // ST(0) = ST(0) / [mem16int]
889 def FIDIV32m : FPI32m<"fidiv", 0xDA, MRM6m, OneArgFPRW>; // ST(0) = ST(0) / [mem32int]
891 // FDIVR reg, mem: Before stackification, these are represented by: R1 = FDIVR* R2, [mem]
892 // Note that the order of operands does not reflect the operation being performed.
893 def FDIVR32m : FPI32m<"fdivr", 0xD8, MRM7m, OneArgFPRW>; // ST(0) = [mem32real] / ST(0)
894 def FDIVR64m : FPI64m<"fdivr", 0xDC, MRM7m, OneArgFPRW>; // ST(0) = [mem64real] / ST(0)
895 def FIDIVR16m : FPI16m<"fidivr", 0xDE, MRM7m, OneArgFPRW>; // ST(0) = [mem16int] / ST(0)
896 def FIDIVR32m : FPI32m<"fidivr", 0xDA, MRM7m, OneArgFPRW>; // ST(0) = [mem32int] / ST(0)
899 // Floating point cmovs...
900 let isTwoAddress = 1, Uses = [ST0], Defs = [ST0] in {
901 def FCMOVB : FPI<"" , 0xC0, AddRegFrm, CondMovFP>, DA, // fcmovb ST(i) -> ST(0)
902 II<(ops RST:$op), "fcmovb %ST(0), $op">;
903 def FCMOVBE : FPI<"", 0xD0, AddRegFrm, CondMovFP>, DA, // fcmovbe ST(i) -> ST(0)
904 II<(ops RST:$op), "fcmovbe %ST(0), $op">;
905 def FCMOVE : FPI<"" , 0xC8, AddRegFrm, CondMovFP>, DA, // fcmove ST(i) -> ST(0)
906 II<(ops RST:$op), "fcmove %ST(0), $op">;
907 def FCMOVAE : FPI<"", 0xC0, AddRegFrm, CondMovFP>, DB, // fcmovae ST(i) -> ST(0)
908 II<(ops RST:$op), "fcmovae %ST(0), $op">;
909 def FCMOVA : FPI<"" , 0xD0, AddRegFrm, CondMovFP>, DB, // fcmova ST(i) -> ST(0)
910 II<(ops RST:$op), "fcmova %ST(0), $op">;
911 def FCMOVNE : FPI<"", 0xC8, AddRegFrm, CondMovFP>, DB, // fcmovne ST(i) -> ST(0)
912 II<(ops RST:$op), "fcmovne %ST(0), $op">;
915 // Floating point loads & stores...
916 def FLDrr : FPI <"fld" , 0xC0, AddRegFrm, NotFP>, D9; // push(ST(i))
917 def FLD32m : FPI32m <"fld" , 0xD9, MRM0m , ZeroArgFP>; // load float
918 def FLD64m : FPI64m <"fld" , 0xDD, MRM0m , ZeroArgFP>; // load double
919 def FLD80m : FPI80m <"fld" , 0xDB, MRM5m , ZeroArgFP>; // load extended
920 def FILD16m : FPI16m <"fild" , 0xDF, MRM0m , ZeroArgFP>; // load signed short
921 def FILD32m : FPI32m <"fild" , 0xDB, MRM0m , ZeroArgFP>; // load signed int
922 def FILD64m : FPI64m <"fild" , 0xDF, MRM5m , ZeroArgFP>; // load signed long
924 def FSTrr : FPI <"fst" , 0xD0, AddRegFrm, NotFP >, DD; // ST(i) = ST(0)
925 def FSTPrr : FPI <"fstp", 0xD8, AddRegFrm, NotFP >, DD; // ST(i) = ST(0), pop
926 def FST32m : FPI32m <"fst" , 0xD9, MRM2m , OneArgFP>; // store float
927 def FST64m : FPI64m <"fst" , 0xDD, MRM2m , OneArgFP>; // store double
928 def FSTP32m : FPI32m <"fstp", 0xD9, MRM3m , OneArgFP>; // store float, pop
929 def FSTP64m : FPI64m <"fstp", 0xDD, MRM3m , OneArgFP>; // store double, pop
930 def FSTP80m : FPI80m <"fstp", 0xDB, MRM7m , OneArgFP>; // store extended, pop
932 def FIST16m : FPI16m <"fist", 0xDF, MRM2m , OneArgFP>; // store signed short
933 def FIST32m : FPI32m <"fist", 0xDB, MRM2m , OneArgFP>; // store signed int
934 def FISTP16m : FPI16m <"fistp", 0xDF, MRM3m , NotFP >; // store signed short, pop
935 def FISTP32m : FPI32m <"fistp", 0xDB, MRM3m , NotFP >; // store signed int, pop
936 def FISTP64m : FPI64m <"fistpll", 0xDF, MRM7m , OneArgFP>; // store signed long, pop
938 def FXCH : FPI <"fxch", 0xC8, AddRegFrm, NotFP>, D9; // fxch ST(i), ST(0)
940 // Floating point constant loads...
941 def FLD0 : FPI<"", 0xEE, RawFrm, ZeroArgFP>, D9,
943 def FLD1 : FPI<"", 0xE8, RawFrm, ZeroArgFP>, D9,
947 // Unary operations...
948 def FCHS : FPI<"", 0xE0, RawFrm, OneArgFPRW>, D9, // f1 = fchs f2
950 def FTST : FPI<"", 0xE4, RawFrm, OneArgFP>, D9, // ftst ST(0)
953 // Binary arithmetic operations...
954 class FPST0rInst<bits<8> o> : I<o, AddRegFrm>, D8 {
955 list<Register> Uses = [ST0];
956 list<Register> Defs = [ST0];
958 class FPrST0Inst<bits<8> o> : I<o, AddRegFrm>, DC {
959 list<Register> Uses = [ST0];
961 class FPrST0PInst<bits<8> o> : I<o, AddRegFrm>, DE {
962 list<Register> Uses = [ST0];
965 def FADDST0r : FPST0rInst <0xC0>, II<(ops RST:$op), "fadd $op">;
966 def FADDrST0 : FPrST0Inst <0xC0>, II<(ops RST:$op), "fadd $op, %ST(0)">;
967 def FADDPrST0 : FPrST0PInst<0xC0>, II<(ops RST:$op), "faddp $op">;
969 def FSUBRST0r : FPST0rInst <0xE8>, II<(ops RST:$op), "fsubr $op">;
970 def FSUBrST0 : FPrST0Inst <0xE8>, II<(ops RST:$op), "fsub $op, %ST(0)">;
971 def FSUBPrST0 : FPrST0PInst<0xE8>, II<(ops RST:$op), "fsubp $op">;
973 def FSUBST0r : FPST0rInst <0xE0>, II<(ops RST:$op), "fsub $op">;
974 def FSUBRrST0 : FPrST0Inst <0xE0>, II<(ops RST:$op), "fsubr $op, %ST(0)">;
975 def FSUBRPrST0 : FPrST0PInst<0xE0>, II<(ops RST:$op), "fsubrp $op">;
977 def FMULST0r : FPST0rInst <0xC8>, II<(ops RST:$op), "fmul $op">;
978 def FMULrST0 : FPrST0Inst <0xC8>, II<(ops RST:$op), "fmul $op, %ST(0)">;
979 def FMULPrST0 : FPrST0PInst<0xC8>, II<(ops RST:$op), "fmulp $op">;
981 def FDIVRST0r : FPST0rInst <0xF8>, II<(ops RST:$op), "fdivr $op">;
982 def FDIVrST0 : FPrST0Inst <0xF8>, II<(ops RST:$op), "fdiv $op, %ST(0)">;
983 def FDIVPrST0 : FPrST0PInst<0xF8>, II<(ops RST:$op), "fdivp $op">;
985 def FDIVST0r : FPST0rInst <0xF0>, II<(ops RST:$op), "fdiv $op">; // ST(0) = ST(0) / ST(i)
986 def FDIVRrST0 : FPrST0Inst <0xF0>, II<(ops RST:$op), "fdivr $op, %ST(0)">; // ST(i) = ST(0) / ST(i)
987 def FDIVRPrST0 : FPrST0PInst<0xF0>, II<(ops RST:$op), "fdivrp $op">; // ST(i) = ST(0) / ST(i), pop
989 // Floating point compares
990 def FUCOMr : FPI<"", 0xE0, AddRegFrm, CompareFP>, DD, Imp<[ST0],[]>, // FPSW = compare ST(0) with ST(i)
991 II<(ops RST:$reg), "fucom $reg">;
992 def FUCOMPr : I<0xE8, AddRegFrm>, DD, Imp<[ST0],[]>, // FPSW = compare ST(0) with ST(i), pop
993 II<(ops RST:$reg), "fucomp $reg">;
994 def FUCOMPPr : I<0xE9, RawFrm >, DA, Imp<[ST0],[]>, // compare ST(0) with ST(1), pop, pop
995 II<(ops), "fucompp">;
998 def FUCOMIr : FPI<"", 0xE8, AddRegFrm, CompareFP>, DB, Imp<[ST0],[]>, // CC = compare ST(0) with ST(i)
999 II<(ops RST:$reg), "fucomi %ST(0), $reg">;
1000 def FUCOMIPr : I<0xE8, AddRegFrm>, DF, Imp<[ST0],[]>, // CC = compare ST(0) with ST(i), pop
1001 II<(ops RST:$reg), "fucomip %ST(0), $reg">;
1004 // Floating point flag ops
1005 def FNSTSW8r : I<0xE0, RawFrm>, DF, Imp<[],[AX]>, // AX = fp flags
1006 II<(ops), "fnstsw">;
1008 def FNSTCW16m : Im16<"fnstcw", 0xD9, MRM7m>; // [mem16] = X87 control world
1009 def FLDCW16m : Im16<"fldcw" , 0xD9, MRM5m>; // X87 control world = [mem16]