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 CondMovFP : FPFormat<5>;
70 def SpecialFP : FPFormat<6>;
73 class X86Inst<string nam, bits<8> opcod, Format f, MemType m, ImmType i> : Instruction {
74 let Namespace = "X86";
77 bits<8> Opcode = opcod;
79 bits<5> FormBits = Form.Value;
81 bits<3> MemTypeBits = MemT.Value;
83 bits<2> ImmTypeBits = ImmT.Value;
86 // Attributes specific to X86 instructions...
88 bit hasOpSizePrefix = 0; // Does this inst have a 0x66 prefix?
90 // Flag whether implicit register usage is printed before/after the
92 bit printImplicitUsesBefore = 0;
93 bit printImplicitUsesAfter = 0;
95 // Flag whether implicit register definitions are printed before/after the
97 bit printImplicitDefsBefore = 0;
98 bit printImplicitDefsAfter = 0;
100 bits<4> Prefix = 0; // Which prefix byte does this inst have?
101 FPFormat FPForm; // What flavor of FP instruction is this?
102 bits<3> FPFormBits = 0;
105 class Imp<list<Register> uses, list<Register> defs> {
106 list<Register> Uses = uses;
107 list<Register> Defs = defs;
110 class Pattern<dag P> {
115 // Prefix byte classes which are used to indicate to the ad-hoc machine code
116 // emitter that various prefix bytes are required.
117 class OpSize { bit hasOpSizePrefix = 1; }
118 class TB { bits<4> Prefix = 1; }
119 class REP { bits<4> Prefix = 2; }
120 class D8 { bits<4> Prefix = 3; }
121 class D9 { bits<4> Prefix = 4; }
122 class DA { bits<4> Prefix = 5; }
123 class DB { bits<4> Prefix = 6; }
124 class DC { bits<4> Prefix = 7; }
125 class DD { bits<4> Prefix = 8; }
126 class DE { bits<4> Prefix = 9; }
127 class DF { bits<4> Prefix = 10; }
130 //===----------------------------------------------------------------------===//
131 // Instruction templates...
133 class I<string n, bits<8> o, Format f> : X86Inst<n, o, f, NoMem, NoImm>;
135 class Im<string n, bits<8> o, Format f, MemType m> : X86Inst<n, o, f, m, NoImm>;
136 class Im8 <string n, bits<8> o, Format f> : Im<n, o, f, Mem8 >;
137 class Im16<string n, bits<8> o, Format f> : Im<n, o, f, Mem16>;
138 class Im32<string n, bits<8> o, Format f> : Im<n, o, f, Mem32>;
140 class Ii<string n, bits<8> o, Format f, ImmType i> : X86Inst<n, o, f, NoMem, i>;
141 class Ii8 <string n, bits<8> o, Format f> : Ii<n, o, f, Imm8 >;
142 class Ii16<string n, bits<8> o, Format f> : Ii<n, o, f, Imm16>;
143 class Ii32<string n, bits<8> o, Format f> : Ii<n, o, f, Imm32>;
145 class Im8i8 <string n, bits<8> o, Format f> : X86Inst<n, o, f, Mem8 , Imm8 >;
146 class Im16i16<string n, bits<8> o, Format f> : X86Inst<n, o, f, Mem16, Imm16>;
147 class Im32i32<string n, bits<8> o, Format f> : X86Inst<n, o, f, Mem32, Imm32>;
149 class Im16i8<string n, bits<8> o, Format f> : X86Inst<n, o, f, Mem16, Imm8>;
150 class Im32i8<string n, bits<8> o, Format f> : X86Inst<n, o, f, Mem32, Imm8>;
152 // Helper for shift instructions
153 class UsesCL { list<Register> Uses = [CL]; bit printImplicitUsesAfter = 1; }
154 class PrintImpDefsAfter {bit printImplicitDefsAfter = 1;}
156 //===----------------------------------------------------------------------===//
157 // Instruction list...
160 def PHI : I<"PHI", 0, Pseudo>; // PHI node...
162 def NOOP : I<"nop", 0x90, RawFrm>; // nop
164 def ADJCALLSTACKDOWN : I<"ADJCALLSTACKDOWN", 0, Pseudo>;
165 def ADJCALLSTACKUP : I<"ADJCALLSTACKUP", 0, Pseudo>;
166 def IMPLICIT_USE : I<"IMPLICIT_USE", 0, Pseudo>;
167 def IMPLICIT_DEF : I<"IMPLICIT_DEF", 0, Pseudo>;
168 let isTerminator = 1 in
169 let Defs = [FP0, FP1, FP2, FP3, FP4, FP5, FP6] in
170 def FP_REG_KILL : I<"FP_REG_KILL", 0, Pseudo>;
171 //===----------------------------------------------------------------------===//
172 // Control Flow Instructions...
175 // Return instruction...
176 let isTerminator = 1, isReturn = 1 in
177 def RET : I<"ret", 0xC3, RawFrm>, Pattern<(retvoid)>;
179 // All branches are RawFrm, Void, Branch, and Terminators
180 let isBranch = 1, isTerminator = 1 in
181 class IBr<string name, bits<8> opcode> : I<name, opcode, RawFrm>;
183 def JMP : IBr<"jmp", 0xE9>, Pattern<(br basicblock)>;
184 def JB : IBr<"jb" , 0x82>, TB;
185 def JAE : IBr<"jae", 0x83>, TB;
186 def JE : IBr<"je" , 0x84>, TB, Pattern<(isVoid (unspec1 basicblock))>;
187 def JNE : IBr<"jne", 0x85>, TB;
188 def JBE : IBr<"jbe", 0x86>, TB;
189 def JA : IBr<"ja" , 0x87>, TB;
190 def JS : IBr<"js" , 0x88>, TB;
191 def JNS : IBr<"jns", 0x89>, TB;
192 def JL : IBr<"jl" , 0x8C>, TB;
193 def JGE : IBr<"jge", 0x8D>, TB;
194 def JLE : IBr<"jle", 0x8E>, TB;
195 def JG : IBr<"jg" , 0x8F>, TB;
198 //===----------------------------------------------------------------------===//
199 // Call Instructions...
202 // All calls clobber the non-callee saved registers...
203 let Defs = [EAX, ECX, EDX, FP0, FP1, FP2, FP3, FP4, FP5, FP6] in {
204 def CALLpcrel32 : I <"call", 0xE8, RawFrm>;
205 def CALL32r : I <"call", 0xFF, MRM2r>;
206 def CALL32m : Im32<"call", 0xFF, MRM2m>;
210 //===----------------------------------------------------------------------===//
211 // Miscellaneous Instructions...
213 def LEAVE : I<"leave", 0xC9, RawFrm>, Imp<[EBP,ESP],[EBP,ESP]>;
214 def POP32r : I<"pop", 0x58, AddRegFrm>, Imp<[ESP],[ESP]>;
216 let isTwoAddress = 1 in // R32 = bswap R32
217 def BSWAP32r : I<"bswap", 0xC8, AddRegFrm>, TB;
219 def XCHG8rr : I <"xchg", 0x86, MRMDestReg>; // xchg R8, R8
220 def XCHG16rr : I <"xchg", 0x87, MRMDestReg>, OpSize; // xchg R16, R16
221 def XCHG32rr : I <"xchg", 0x87, MRMDestReg>; // xchg R32, R32
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<"rep movsb", 0xA4, RawFrm>, REP,
234 Imp<[ECX,EDI,ESI], [ECX,EDI,ESI]>;
235 def REP_MOVSW : I<"rep movsw", 0xA5, RawFrm>, REP, OpSize,
236 Imp<[ECX,EDI,ESI], [ECX,EDI,ESI]>;
237 def REP_MOVSD : I<"rep movsd", 0xA5, RawFrm>, REP,
238 Imp<[ECX,EDI,ESI], [ECX,EDI,ESI]>;
240 def REP_STOSB : I<"rep stosb", 0xAA, RawFrm>, REP,
241 Imp<[AL,ECX,EDI], [ECX,EDI]>;
242 def REP_STOSW : I<"rep stosw", 0xAB, RawFrm>, REP, OpSize,
243 Imp<[AX,ECX,EDI], [ECX,EDI]>;
244 def REP_STOSD : I<"rep stosd", 0xAB, RawFrm>, REP,
245 Imp<[EAX,ECX,EDI], [ECX,EDI]>;
247 //===----------------------------------------------------------------------===//
248 // Input/Output Instructions...
250 let printImplicitUsesAfter = 1, printImplicitDefsAfter = 1 in {
251 def IN8rr : I<"in", 0xEC, RawFrm>, Imp<[DX], [AL]>; // AL = in I/O address DX
252 def IN16rr : I<"in", 0xED, RawFrm>, Imp<[DX], [AX]>, OpSize; // AX = in I/O address DX
253 def IN32rr : I<"in", 0xED, RawFrm>, Imp<[DX],[EAX]>; // EAX = in I/O address DX
256 let printImplicitDefsBefore = 1 in {
257 def IN8ri : Ii16<"in", 0xE4, RawFrm>, Imp<[], [AL]>; // AL = in [I/O address]
258 def IN16ri : Ii16<"in", 0xE5, RawFrm>, Imp<[], [AX]>, OpSize; // AX = in [I/O address]
259 def IN32ri : Ii16<"in", 0xE5, RawFrm>, Imp<[],[EAX]>; // EAX = in [I/O address]
262 let printImplicitUsesAfter = 1 in {
263 def OUT8rr : I<"out", 0xEE, RawFrm>, Imp<[DX, AL], []>;
264 def OUT16rr : I<"out", 0xEF, RawFrm>, Imp<[DX, AX], []>, OpSize;
265 def OUT32rr : I<"out", 0xEF, RawFrm>, Imp<[DX, EAX], []>;
266 def OUT8ir : Ii16<"out", 0xE6, RawFrm>, Imp<[AL], []>;
267 def OUT16ir : Ii16<"out", 0xE7, RawFrm>, Imp<[AX], []>, OpSize;
268 def OUT32ir : Ii16<"out", 0xE7, RawFrm>, Imp<[EAX], []>;
271 //===----------------------------------------------------------------------===//
272 // Move Instructions...
274 def MOV8rr : I <"mov", 0x88, MRMDestReg>, Pattern<(set R8 , R8 )>;
275 def MOV16rr : I <"mov", 0x89, MRMDestReg>, OpSize, Pattern<(set R16, R16)>;
276 def MOV32rr : I <"mov", 0x89, MRMDestReg>, Pattern<(set R32, R32)>;
277 def MOV8ri : Ii8 <"mov", 0xB0, AddRegFrm >, Pattern<(set R8 , imm )>;
278 def MOV16ri : Ii16 <"mov", 0xB8, AddRegFrm >, OpSize, Pattern<(set R16, imm)>;
279 def MOV32ri : Ii32 <"mov", 0xB8, AddRegFrm >, Pattern<(set R32, imm)>;
280 def MOV8mi : Im8i8 <"mov", 0xC6, MRM0m >; // [mem8] = imm8
281 def MOV16mi : Im16i16<"mov", 0xC7, MRM0m >, OpSize; // [mem16] = imm16
282 def MOV32mi : Im32i32<"mov", 0xC7, MRM0m >; // [mem32] = imm32
284 def MOV8rm : Im8 <"mov", 0x8A, MRMSrcMem>; // R8 = [mem8]
285 def MOV16rm : Im16 <"mov", 0x8B, MRMSrcMem>, OpSize, // R16 = [mem16]
286 Pattern<(set R16, (load (plus R32, (plus (times imm, R32), imm))))>;
287 def MOV32rm : Im32 <"mov", 0x8B, MRMSrcMem>, // R32 = [mem32]
288 Pattern<(set R32, (load (plus R32, (plus (times imm, R32), imm))))>;
290 def MOV8mr : Im8 <"mov", 0x88, MRMDestMem>; // [mem8] = R8
291 def MOV16mr : Im16 <"mov", 0x89, MRMDestMem>, OpSize; // [mem16] = R16
292 def MOV32mr : Im32 <"mov", 0x89, MRMDestMem>; // [mem32] = R32
294 //===----------------------------------------------------------------------===//
295 // Fixed-Register Multiplication and Division Instructions...
298 // Extra precision multiplication
299 def MUL8r : I <"mul", 0xF6, MRM4r>, Imp<[AL],[AX]>; // AL,AH = AL*R8
300 def MUL16r : I <"mul", 0xF7, MRM4r>, Imp<[AX],[AX,DX]>, OpSize; // AX,DX = AX*R16
301 def MUL32r : I <"mul", 0xF7, MRM4r>, Imp<[EAX],[EAX,EDX]>; // EAX,EDX = EAX*R32
302 def MUL8m : Im8 <"mul", 0xF6, MRM4m>, Imp<[AL],[AX]>; // AL,AH = AL*[mem8]
303 def MUL16m : Im16<"mul", 0xF7, MRM4m>, Imp<[AX],[AX,DX]>, OpSize; // AX,DX = AX*[mem16]
304 def MUL32m : Im32<"mul", 0xF7, MRM4m>, Imp<[EAX],[EAX,EDX]>; // EAX,EDX = EAX*[mem32]
306 // unsigned division/remainder
307 def DIV8r : I <"div", 0xF6, MRM6r>, Imp<[AX],[AX]>; // AX/r8 = AL,AH
308 def DIV16r : I <"div", 0xF7, MRM6r>, Imp<[AX,DX],[AX,DX]>, OpSize; // DX:AX/r16 = AX,DX
309 def DIV32r : I <"div", 0xF7, MRM6r>, Imp<[EAX,EDX],[EAX,EDX]>; // EDX:EAX/r32 = EAX,EDX
310 def DIV8m : Im8 <"div", 0xF6, MRM6m>, Imp<[AX],[AX]>; // AX/[mem8] = AL,AH
311 def DIV16m : Im16<"div", 0xF7, MRM6m>, Imp<[AX,DX],[AX,DX]>, OpSize; // DX:AX/[mem16] = AX,DX
312 def DIV32m : Im32<"div", 0xF7, MRM6m>, Imp<[EAX,EDX],[EAX,EDX]>; // EDX:EAX/[mem32] = EAX,EDX
314 // signed division/remainder
315 def IDIV8r : I <"idiv",0xF6, MRM7r>, Imp<[AX],[AX]>; // AX/r8 = AL,AH
316 def IDIV16r: I <"idiv",0xF7, MRM7r>, Imp<[AX,DX],[AX,DX]>, OpSize; // DX:AX/r16 = AX,DX
317 def IDIV32r: I <"idiv",0xF7, MRM7r>, Imp<[EAX,EDX],[EAX,EDX]>; // EDX:EAX/r32 = EAX,EDX
318 def IDIV8m : Im8 <"idiv",0xF6, MRM7m>, Imp<[AX],[AX]>; // AX/[mem8] = AL,AH
319 def IDIV16m: Im16<"idiv",0xF7, MRM7m>, Imp<[AX,DX],[AX,DX]>, OpSize; // DX:AX/[mem16] = AX,DX
320 def IDIV32m: Im32<"idiv",0xF7, MRM7m>, Imp<[EAX,EDX],[EAX,EDX]>; // EDX:EAX/[mem32] = EAX,EDX
322 // Sign-extenders for division
323 def CBW : I<"cbw", 0x98, RawFrm >, Imp<[AL],[AH]>; // AX = signext(AL)
324 def CWD : I<"cwd", 0x99, RawFrm >, Imp<[AX],[DX]>; // DX:AX = signext(AX)
325 def CDQ : I<"cdq", 0x99, RawFrm >, Imp<[EAX],[EDX]>; // EDX:EAX = signext(EAX)
327 //===----------------------------------------------------------------------===//
328 // Two address Instructions...
330 let isTwoAddress = 1 in {
333 def CMOVB16rr : I <"cmovb", 0x42, MRMSrcReg>, TB, OpSize; // if <u, R16 = R16
334 def CMOVB16rm : Im16<"cmovb", 0x42, MRMSrcMem>, TB, OpSize; // if <u, R16 = [mem16]
335 def CMOVB32rr : I <"cmovb", 0x42, MRMSrcReg>, TB; // if <u, R32 = R32
336 def CMOVB32rm : Im32<"cmovb", 0x42, MRMSrcMem>, TB; // if <u, R32 = [mem32]
338 def CMOVAE16rr: I <"cmovae", 0x43, MRMSrcReg>, TB, OpSize; // if >=u, R16 = R16
339 def CMOVAE16rm: Im16<"cmovae", 0x43, MRMSrcMem>, TB, OpSize; // if >=u, R16 = [mem16]
340 def CMOVAE32rr: I <"cmovae", 0x43, MRMSrcReg>, TB; // if >=u, R32 = R32
341 def CMOVAE32rm: Im32<"cmovae", 0x43, MRMSrcMem>, TB; // if >=u, R32 = [mem32]
343 def CMOVE16rr : I <"cmove", 0x44, MRMSrcReg>, TB, OpSize; // if ==, R16 = R16
344 def CMOVE16rm : Im16<"cmove", 0x44, MRMSrcMem>, TB, OpSize; // if ==, R16 = [mem16]
345 def CMOVE32rr : I <"cmove", 0x44, MRMSrcReg>, TB; // if ==, R32 = R32
346 def CMOVE32rm : Im32<"cmove", 0x44, MRMSrcMem>, TB; // if ==, R32 = [mem32]
348 def CMOVNE16rr: I <"cmovne",0x45, MRMSrcReg>, TB, OpSize; // if !=, R16 = R16
349 def CMOVNE16rm: Im16<"cmovne",0x45, MRMSrcMem>, TB, OpSize; // if !=, R16 = [mem16]
350 def CMOVNE32rr: I <"cmovne",0x45, MRMSrcReg>, TB; // if !=, R32 = R32
351 def CMOVNE32rm: Im32<"cmovne",0x45, MRMSrcMem>, TB; // if !=, R32 = [mem32]
353 def CMOVBE16rr: I <"cmovbe",0x46, MRMSrcReg>, TB, OpSize; // if <=u, R16 = R16
354 def CMOVBE16rm: Im16<"cmovbe",0x46, MRMSrcMem>, TB, OpSize; // if <=u, R16 = [mem16]
355 def CMOVBE32rr: I <"cmovbe",0x46, MRMSrcReg>, TB; // if <=u, R32 = R32
356 def CMOVBE32rm: Im32<"cmovbe",0x46, MRMSrcMem>, TB; // if <=u, R32 = [mem32]
358 def CMOVA16rr : I <"cmova", 0x47, MRMSrcReg>, TB, OpSize; // if >u, R16 = R16
359 def CMOVA16rm : Im16<"cmova", 0x47, MRMSrcMem>, TB, OpSize; // if >u, R16 = [mem16]
360 def CMOVA32rr : I <"cmova", 0x47, MRMSrcReg>, TB; // if >u, R32 = R32
361 def CMOVA32rm : Im32<"cmova", 0x47, MRMSrcMem>, TB; // if >u, R32 = [mem32]
363 def CMOVS16rr : I <"cmovs", 0x48, MRMSrcReg>, TB, OpSize; // if signed, R16 = R16
364 def CMOVS16rm : Im16<"cmovs", 0x48, MRMSrcMem>, TB, OpSize; // if signed, R16 = [mem16]
365 def CMOVS32rr : I <"cmovs", 0x48, MRMSrcReg>, TB; // if signed, R32 = R32
366 def CMOVS32rm : Im32<"cmovs", 0x48, MRMSrcMem>, TB; // if signed, R32 = [mem32]
368 def CMOVNS16rr: I <"cmovns",0x49, MRMSrcReg>, TB, OpSize; // if !signed, R16 = R16
369 def CMOVNS16rm: Im16<"cmovns",0x49, MRMSrcMem>, TB, OpSize; // if !signed, R16 = [mem16]
370 def CMOVNS32rr: I <"cmovns",0x49, MRMSrcReg>, TB; // if !signed, R32 = R32
371 def CMOVNS32rm: Im32<"cmovns",0x49, MRMSrcMem>, TB; // if !signed, R32 = [mem32]
373 def CMOVL16rr : I <"cmovl", 0x4C, MRMSrcReg>, TB, OpSize; // if <s, R16 = R16
374 def CMOVL16rm : Im16<"cmovl", 0x4C, MRMSrcMem>, TB, OpSize; // if <s, R16 = [mem16]
375 def CMOVL32rr : I <"cmovl", 0x4C, MRMSrcReg>, TB; // if <s, R32 = R32
376 def CMOVL32rm : Im32<"cmovl", 0x4C, MRMSrcMem>, TB; // if <s, R32 = [mem32]
378 def CMOVGE16rr: I <"cmovge",0x4D, MRMSrcReg>, TB, OpSize; // if >=s, R16 = R16
379 def CMOVGE16rm: Im16<"cmovge",0x4D, MRMSrcMem>, TB, OpSize; // if >=s, R16 = [mem16]
380 def CMOVGE32rr: I <"cmovge",0x4D, MRMSrcReg>, TB; // if >=s, R32 = R32
381 def CMOVGE32rm: Im32<"cmovge",0x4D, MRMSrcMem>, TB; // if >=s, R32 = [mem32]
383 def CMOVLE16rr: I <"cmovle",0x4E, MRMSrcReg>, TB, OpSize; // if <=s, R16 = R16
384 def CMOVLE16rm: Im16<"cmovle",0x4E, MRMSrcMem>, TB, OpSize; // if <=s, R16 = [mem16]
385 def CMOVLE32rr: I <"cmovle",0x4E, MRMSrcReg>, TB; // if <=s, R32 = R32
386 def CMOVLE32rm: Im32<"cmovle",0x4E, MRMSrcMem>, TB; // if <=s, R32 = [mem32]
388 def CMOVG16rr : I <"cmovg", 0x4F, MRMSrcReg>, TB, OpSize; // if >s, R16 = R16
389 def CMOVG16rm : Im16<"cmovg", 0x4F, MRMSrcMem>, TB, OpSize; // if >s, R16 = [mem16]
390 def CMOVG32rr : I <"cmovg", 0x4F, MRMSrcReg>, TB; // if >s, R32 = R32
391 def CMOVG32rm : Im32<"cmovg", 0x4F, MRMSrcMem>, TB; // if >s, R32 = [mem32]
393 // unary instructions
394 def NEG8r : I <"neg", 0xF6, MRM3r>; // R8 = -R8 = 0-R8
395 def NEG16r : I <"neg", 0xF7, MRM3r>, OpSize; // R16 = -R16 = 0-R16
396 def NEG32r : I <"neg", 0xF7, MRM3r>; // R32 = -R32 = 0-R32
397 def NEG8m : Im8 <"neg", 0xF6, MRM3m>; // [mem8] = -[mem8] = 0-[mem8]
398 def NEG16m : Im16<"neg", 0xF7, MRM3m>, OpSize; // [mem16] = -[mem16] = 0-[mem16]
399 def NEG32m : Im32<"neg", 0xF7, MRM3m>; // [mem32] = -[mem32] = 0-[mem32]
401 def NOT8r : I <"not", 0xF6, MRM2r>; // R8 = ~R8 = R8^-1
402 def NOT16r : I <"not", 0xF7, MRM2r>, OpSize; // R16 = ~R16 = R16^-1
403 def NOT32r : I <"not", 0xF7, MRM2r>; // R32 = ~R32 = R32^-1
404 def NOT8m : Im8 <"not", 0xF6, MRM2m>; // [mem8] = ~[mem8] = [mem8^-1]
405 def NOT16m : Im16<"not", 0xF7, MRM2m>, OpSize; // [mem16] = ~[mem16] = [mem16^-1]
406 def NOT32m : Im32<"not", 0xF7, MRM2m>; // [mem32] = ~[mem32] = [mem32^-1]
408 def INC8r : I <"inc", 0xFE, MRM0r>; // ++R8
409 def INC16r : I <"inc", 0xFF, MRM0r>, OpSize; // ++R16
410 def INC32r : I <"inc", 0xFF, MRM0r>; // ++R32
411 def INC8m : Im8 <"inc", 0xFE, MRM0m>; // ++R8
412 def INC16m : Im16<"inc", 0xFF, MRM0m>, OpSize; // ++R16
413 def INC32m : Im32<"inc", 0xFF, MRM0m>; // ++R32
415 def DEC8r : I <"dec", 0xFE, MRM1r>; // --R8
416 def DEC16r : I <"dec", 0xFF, MRM1r>, OpSize; // --R16
417 def DEC32r : I <"dec", 0xFF, MRM1r>; // --R32
418 def DEC8m : Im8 <"dec", 0xFE, MRM1m>; // --[mem8]
419 def DEC16m : Im16<"dec", 0xFF, MRM1m>, OpSize; // --[mem16]
420 def DEC32m : Im32<"dec", 0xFF, MRM1m>; // --[mem32]
422 // Logical operators...
423 def AND8rr : I <"and", 0x20, MRMDestReg>, Pattern<(set R8 , (and R8 , R8 ))>;
424 def AND16rr : I <"and", 0x21, MRMDestReg>, OpSize, Pattern<(set R16, (and R16, R16))>;
425 def AND32rr : I <"and", 0x21, MRMDestReg>, Pattern<(set R32, (and R32, R32))>;
426 def AND8mr : Im8 <"and", 0x20, MRMDestMem>; // [mem8] &= R8
427 def AND16mr : Im16 <"and", 0x21, MRMDestMem>, OpSize; // [mem16] &= R16
428 def AND32mr : Im32 <"and", 0x21, MRMDestMem>; // [mem32] &= R32
429 def AND8rm : Im8 <"and", 0x22, MRMSrcMem >; // R8 &= [mem8]
430 def AND16rm : Im16 <"and", 0x23, MRMSrcMem >, OpSize; // R16 &= [mem16]
431 def AND32rm : Im32 <"and", 0x23, MRMSrcMem >; // R32 &= [mem32]
433 def AND8ri : Ii8 <"and", 0x80, MRM4r >, Pattern<(set R8 , (and R8 , imm))>;
434 def AND16ri : Ii16 <"and", 0x81, MRM4r >, OpSize, Pattern<(set R16, (and R16, imm))>;
435 def AND32ri : Ii32 <"and", 0x81, MRM4r >, Pattern<(set R32, (and R32, imm))>;
436 def AND8mi : Im8i8 <"and", 0x80, MRM4m >; // [mem8] &= imm8
437 def AND16mi : Im16i16<"and", 0x81, MRM4m >, OpSize; // [mem16] &= imm16
438 def AND32mi : Im32i32<"and", 0x81, MRM4m >; // [mem32] &= imm32
440 def AND16ri8 : Ii8 <"and", 0x83, MRM4r >, OpSize; // R16 &= imm8
441 def AND32ri8 : Ii8 <"and", 0x83, MRM4r >; // R32 &= imm8
442 def AND16mi8 : Im16i8<"and", 0x83, MRM4m >, OpSize; // [mem16] &= imm8
443 def AND32mi8 : Im32i8<"and", 0x83, MRM4m >; // [mem32] &= imm8
446 def OR8rr : I <"or" , 0x08, MRMDestReg>, Pattern<(set R8 , (or R8 , R8 ))>;
447 def OR16rr : I <"or" , 0x09, MRMDestReg>, OpSize, Pattern<(set R16, (or R16, R16))>;
448 def OR32rr : I <"or" , 0x09, MRMDestReg>, Pattern<(set R32, (or R32, R32))>;
449 def OR8mr : Im8 <"or" , 0x08, MRMDestMem>; // [mem8] |= R8
450 def OR16mr : Im16 <"or" , 0x09, MRMDestMem>, OpSize; // [mem16] |= R16
451 def OR32mr : Im32 <"or" , 0x09, MRMDestMem>; // [mem32] |= R32
452 def OR8rm : Im8 <"or" , 0x0A, MRMSrcMem >; // R8 |= [mem8]
453 def OR16rm : Im16 <"or" , 0x0B, MRMSrcMem >, OpSize; // R16 |= [mem16]
454 def OR32rm : Im32 <"or" , 0x0B, MRMSrcMem >; // R32 |= [mem32]
456 def OR8ri : Ii8 <"or" , 0x80, MRM1r >, Pattern<(set R8 , (or R8 , imm))>;
457 def OR16ri : Ii16 <"or" , 0x81, MRM1r >, OpSize, Pattern<(set R16, (or R16, imm))>;
458 def OR32ri : Ii32 <"or" , 0x81, MRM1r >, Pattern<(set R32, (or R32, imm))>;
459 def OR8mi : Im8i8 <"or" , 0x80, MRM1m >; // [mem8] |= imm8
460 def OR16mi : Im16i16<"or" , 0x81, MRM1m >, OpSize; // [mem16] |= imm16
461 def OR32mi : Im32i32<"or" , 0x81, MRM1m >; // [mem32] |= imm32
463 def OR16ri8 : Ii8 <"or" , 0x83, MRM1r >, OpSize; // R16 |= imm8
464 def OR32ri8 : Ii8 <"or" , 0x83, MRM1r >; // R32 |= imm8
465 def OR16mi8 : Im16i8<"or" , 0x83, MRM1m >, OpSize; // [mem16] |= imm8
466 def OR32mi8 : Im32i8<"or" , 0x83, MRM1m >; // [mem32] |= imm8
469 def XOR8rr : I <"xor", 0x30, MRMDestReg>, Pattern<(set R8 , (xor R8 , R8 ))>;
470 def XOR16rr : I <"xor", 0x31, MRMDestReg>, OpSize, Pattern<(set R16, (xor R16, R16))>;
471 def XOR32rr : I <"xor", 0x31, MRMDestReg>, Pattern<(set R32, (xor R32, R32))>;
472 def XOR8mr : Im8 <"xor", 0x30, MRMDestMem>; // [mem8] ^= R8
473 def XOR16mr : Im16 <"xor", 0x31, MRMDestMem>, OpSize; // [mem16] ^= R16
474 def XOR32mr : Im32 <"xor", 0x31, MRMDestMem>; // [mem32] ^= R32
475 def XOR8rm : Im8 <"xor", 0x32, MRMSrcMem >; // R8 ^= [mem8]
476 def XOR16rm : Im16 <"xor", 0x33, MRMSrcMem >, OpSize; // R16 ^= [mem16]
477 def XOR32rm : Im32 <"xor", 0x33, MRMSrcMem >; // R32 ^= [mem32]
479 def XOR8ri : Ii8 <"xor", 0x80, MRM6r >, Pattern<(set R8 , (xor R8 , imm))>;
480 def XOR16ri : Ii16 <"xor", 0x81, MRM6r >, OpSize, Pattern<(set R16, (xor R16, imm))>;
481 def XOR32ri : Ii32 <"xor", 0x81, MRM6r >, Pattern<(set R32, (xor R32, imm))>;
482 def XOR8mi : Im8i8 <"xor", 0x80, MRM6m >; // [mem8] ^= R8
483 def XOR16mi : Im16i16<"xor", 0x81, MRM6m >, OpSize; // [mem16] ^= R16
484 def XOR32mi : Im32i32<"xor", 0x81, MRM6m >; // [mem32] ^= R32
486 def XOR16ri8 : Ii8 <"xor", 0x83, MRM6r >, OpSize; // R16 ^= imm8
487 def XOR32ri8 : Ii8 <"xor", 0x83, MRM6r >; // R32 ^= imm8
488 def XOR16mi8 : Im16i8<"xor", 0x83, MRM6m >, OpSize; // [mem16] ^= imm8
489 def XOR32mi8 : Im32i8<"xor", 0x83, MRM6m >; // [mem32] ^= imm8
491 // Shift instructions
492 // FIXME: provide shorter instructions when imm8 == 1
493 def SHL8rCL : I <"shl", 0xD2, MRM4r > , UsesCL; // R8 <<= cl
494 def SHL16rCL : I <"shl", 0xD3, MRM4r >, OpSize, UsesCL; // R16 <<= cl
495 def SHL32rCL : I <"shl", 0xD3, MRM4r > , UsesCL; // R32 <<= cl
496 def SHL8mCL : Im8 <"shl", 0xD2, MRM4m > , UsesCL; // [mem8] <<= cl
497 def SHL16mCL : Im16 <"shl", 0xD3, MRM4m >, OpSize, UsesCL; // [mem16] <<= cl
498 def SHL32mCL : Im32 <"shl", 0xD3, MRM4m > , UsesCL; // [mem32] <<= cl
500 def SHL8ri : Ii8 <"shl", 0xC0, MRM4r >; // R8 <<= imm8
501 def SHL16ri : Ii8 <"shl", 0xC1, MRM4r >, OpSize; // R16 <<= imm8
502 def SHL32ri : Ii8 <"shl", 0xC1, MRM4r >; // R32 <<= imm8
503 def SHL8mi : Im8i8 <"shl", 0xC0, MRM4m >; // [mem8] <<= imm8
504 def SHL16mi : Im16i8<"shl", 0xC1, MRM4m >, OpSize; // [mem16] <<= imm8
505 def SHL32mi : Im32i8<"shl", 0xC1, MRM4m >; // [mem32] <<= imm8
507 def SHR8rCL : I <"shr", 0xD2, MRM5r > , UsesCL; // R8 >>= cl
508 def SHR16rCL : I <"shr", 0xD3, MRM5r >, OpSize, UsesCL; // R16 >>= cl
509 def SHR32rCL : I <"shr", 0xD3, MRM5r > , UsesCL; // R32 >>= cl
510 def SHR8mCL : Im8 <"shr", 0xD2, MRM5m > , UsesCL; // [mem8] >>= cl
511 def SHR16mCL : Im16 <"shr", 0xD3, MRM5m >, OpSize, UsesCL; // [mem16] >>= cl
512 def SHR32mCL : Im32 <"shr", 0xD3, MRM5m > , UsesCL; // [mem32] >>= cl
514 def SHR8ri : Ii8 <"shr", 0xC0, MRM5r >; // R8 >>= imm8
515 def SHR16ri : Ii8 <"shr", 0xC1, MRM5r >, OpSize; // R16 >>= imm8
516 def SHR32ri : Ii8 <"shr", 0xC1, MRM5r >; // R32 >>= imm8
517 def SHR8mi : Im8i8 <"shr", 0xC0, MRM5m >; // [mem8] >>= imm8
518 def SHR16mi : Im16i8<"shr", 0xC1, MRM5m >, OpSize; // [mem16] >>= imm8
519 def SHR32mi : Im32i8<"shr", 0xC1, MRM5m >; // [mem32] >>= imm8
521 def SAR8rCL : I <"sar", 0xD2, MRM7r > , UsesCL; // R8 >>>= cl
522 def SAR16rCL : I <"sar", 0xD3, MRM7r >, OpSize, UsesCL; // R16 >>>= cl
523 def SAR32rCL : I <"sar", 0xD3, MRM7r > , UsesCL; // R32 >>>= cl
524 def SAR8mCL : Im8 <"sar", 0xD2, MRM7m > , UsesCL; // [mem8] >>>= cl
525 def SAR16mCL : Im16 <"sar", 0xD3, MRM7m >, OpSize, UsesCL; // [mem16] >>>= cl
526 def SAR32mCL : Im32 <"sar", 0xD3, MRM7m > , UsesCL; // [mem32] >>>= cl
528 def SAR8ri : Ii8 <"sar", 0xC0, MRM7r >; // R8 >>>= imm8
529 def SAR16ri : Ii8 <"sar", 0xC1, MRM7r >, OpSize; // R16 >>>= imm8
530 def SAR32ri : Ii8 <"sar", 0xC1, MRM7r >; // R32 >>>= imm8
531 def SAR8mi : Im8i8 <"sar", 0xC0, MRM7m >; // [mem8] >>>= imm8
532 def SAR16mi : Im16i8<"sar", 0xC1, MRM7m >, OpSize; // [mem16] >>>= imm8
533 def SAR32mi : Im32i8<"sar", 0xC1, MRM7m >; // [mem32] >>>= imm8
535 def SHLD32rrCL : I <"shld", 0xA5, MRMDestReg>, TB, UsesCL; // R32 <<= R32,R32 cl
536 def SHLD32mrCL : Im32 <"shld", 0xA5, MRMDestMem>, TB, UsesCL; // [mem32] <<= [mem32],R32 cl
537 def SHLD32rri8 : Ii8 <"shld", 0xA4, MRMDestReg>, TB; // R32 <<= R32,R32 imm8
538 def SHLD32mri8 : Im32i8<"shld", 0xA4, MRMDestMem>, TB; // [mem32] <<= [mem32],R32 imm8
540 def SHRD32rrCL : I <"shrd", 0xAD, MRMDestReg>, TB, UsesCL; // R32 >>= R32,R32 cl
541 def SHRD32mrCL : Im32 <"shrd", 0xAD, MRMDestMem>, TB, UsesCL; // [mem32] >>= [mem32],R32 cl
542 def SHRD32rri8 : Ii8 <"shrd", 0xAC, MRMDestReg>, TB; // R32 >>= R32,R32 imm8
543 def SHRD32mri8 : Im32i8<"shrd", 0xAC, MRMDestMem>, TB; // [mem32] >>= [mem32],R32 imm8
547 def ADD8rr : I <"add", 0x00, MRMDestReg>, Pattern<(set R8 , (plus R8 , R8 ))>;
548 def ADD16rr : I <"add", 0x01, MRMDestReg>, OpSize, Pattern<(set R16, (plus R16, R16))>;
549 def ADD32rr : I <"add", 0x01, MRMDestReg>, Pattern<(set R32, (plus R32, R32))>;
550 def ADD8mr : Im8 <"add", 0x00, MRMDestMem>; // [mem8] += R8
551 def ADD16mr : Im16 <"add", 0x01, MRMDestMem>, OpSize; // [mem16] += R16
552 def ADD32mr : Im32 <"add", 0x01, MRMDestMem>; // [mem32] += R32
553 def ADD8rm : Im8 <"add", 0x02, MRMSrcMem >; // R8 += [mem8]
554 def ADD16rm : Im16 <"add", 0x03, MRMSrcMem >, OpSize; // R16 += [mem16]
555 def ADD32rm : Im32 <"add", 0x03, MRMSrcMem >; // R32 += [mem32]
557 def ADD8ri : Ii8 <"add", 0x80, MRM0r >, Pattern<(set R8 , (plus R8 , imm))>;
558 def ADD16ri : Ii16 <"add", 0x81, MRM0r >, OpSize, Pattern<(set R16, (plus R16, imm))>;
559 def ADD32ri : Ii32 <"add", 0x81, MRM0r >, Pattern<(set R32, (plus R32, imm))>;
560 def ADD8mi : Im8i8 <"add", 0x80, MRM0m >; // [mem8] += I8
561 def ADD16mi : Im16i16<"add", 0x81, MRM0m >, OpSize; // [mem16] += I16
562 def ADD32mi : Im32i32<"add", 0x81, MRM0m >; // [mem32] += I32
564 def ADD16ri8 : Ii8 <"add", 0x83, MRM0r >, OpSize; // ADDri with sign extended 8 bit imm
565 def ADD32ri8 : Ii8 <"add", 0x83, MRM0r >;
566 def ADD16mi8 : Im16i8<"add", 0x83, MRM0m >, OpSize; // [mem16] += I8
567 def ADD32mi8 : Im32i8<"add", 0x83, MRM0m >; // [mem32] += I8
569 def ADC32rr : I <"adc", 0x11, MRMDestReg>; // R32 += R32+Carry
570 def ADC32mr : Im32 <"adc", 0x11, MRMDestMem>; // [mem32] += R32+Carry
571 def ADC32rm : Im32 <"adc", 0x13, MRMSrcMem >; // R32 += [mem32]+Carry
572 def ADC32ri : Ii32 <"adc", 0x81, MRM2r >; // R32 += I32+Carry
573 def ADC32ri8 : Ii8 <"adc", 0x83, MRM2r >; // R32 += I8+Carry
574 def ADC32mi : Im32i32<"adc", 0x81, MRM2m >; // [mem32] += I32+Carry
575 def ADC32mi8 : Im32i8 <"adc", 0x83, MRM2m >; // [mem32] += I8+Carry
577 def SUB8rr : I <"sub", 0x28, MRMDestReg>, Pattern<(set R8 , (minus R8 , R8 ))>;
578 def SUB16rr : I <"sub", 0x29, MRMDestReg>, OpSize, Pattern<(set R16, (minus R16, R16))>;
579 def SUB32rr : I <"sub", 0x29, MRMDestReg>, Pattern<(set R32, (minus R32, R32))>;
580 def SUB8mr : Im8 <"sub", 0x28, MRMDestMem>; // [mem8] -= R8
581 def SUB16mr : Im16 <"sub", 0x29, MRMDestMem>, OpSize; // [mem16] -= R16
582 def SUB32mr : Im32 <"sub", 0x29, MRMDestMem>; // [mem32] -= R32
583 def SUB8rm : Im8 <"sub", 0x2A, MRMSrcMem >; // R8 -= [mem8]
584 def SUB16rm : Im16 <"sub", 0x2B, MRMSrcMem >, OpSize; // R16 -= [mem16]
585 def SUB32rm : Im32 <"sub", 0x2B, MRMSrcMem >; // R32 -= [mem32]
587 def SUB8ri : Ii8 <"sub", 0x80, MRM5r >, Pattern<(set R8 , (minus R8 , imm))>;
588 def SUB16ri : Ii16 <"sub", 0x81, MRM5r >, OpSize, Pattern<(set R16, (minus R16, imm))>;
589 def SUB32ri : Ii32 <"sub", 0x81, MRM5r >, Pattern<(set R32, (minus R32, imm))>;
590 def SUB8mi : Im8i8 <"sub", 0x80, MRM5m >; // [mem8] -= I8
591 def SUB16mi : Im16i16<"sub", 0x81, MRM5m >, OpSize; // [mem16] -= I16
592 def SUB32mi : Im32i32<"sub", 0x81, MRM5m >; // [mem32] -= I32
594 def SUB16ri8 : Ii8 <"sub", 0x83, MRM5r >, OpSize;
595 def SUB32ri8 : Ii8 <"sub", 0x83, MRM5r >;
596 def SUB16mi8 : Im16i8<"sub", 0x83, MRM5m >, OpSize; // [mem16] -= I8
597 def SUB32mi8 : Im32i8<"sub", 0x83, MRM5m >; // [mem32] -= I8
599 def SBB32rr : I <"sbb", 0x19, MRMDestReg>; // R32 -= R32+Carry
600 def SBB32mr : Im32 <"sbb", 0x19, MRMDestMem>; // [mem32] -= R32+Carry
601 def SBB32rm : Im32 <"sbb", 0x1B, MRMSrcMem >; // R32 -= [mem32]+Carry
602 def SBB32ri : Ii32 <"sbb", 0x81, MRM3r >; // R32 -= I32+Carry
603 def SBB32ri8 : Ii8 <"sbb", 0x83, MRM3r >; // R32 -= I8+Carry
604 def SBB32mi : Im32i32<"sbb", 0x81, MRM3m >; // [mem32] -= I32+Carry
605 def SBB32mi8 : Im32i8 <"sbb", 0x83, MRM3m >; // [mem32] -= I8+Carry
607 def IMUL16rr : I <"imul", 0xAF, MRMSrcReg>, TB, OpSize, Pattern<(set R16, (times R16, R16))>;
608 def IMUL32rr : I <"imul", 0xAF, MRMSrcReg>, TB , Pattern<(set R32, (times R32, R32))>;
609 def IMUL16rm : Im16 <"imul", 0xAF, MRMSrcMem>, TB, OpSize;
610 def IMUL32rm : Im32 <"imul", 0xAF, MRMSrcMem>, TB ;
612 } // end Two Address instructions
614 // These are suprisingly enough not two address instructions!
615 def IMUL16rri : Ii16 <"imul", 0x69, MRMSrcReg>, OpSize; // R16 = R16*I16
616 def IMUL32rri : Ii32 <"imul", 0x69, MRMSrcReg>; // R32 = R32*I32
617 def IMUL16rri8 : Ii8 <"imul", 0x6B, MRMSrcReg>, OpSize; // R16 = R16*I8
618 def IMUL32rri8 : Ii8 <"imul", 0x6B, MRMSrcReg>; // R32 = R32*I8
619 def IMUL16rmi : Im16i16<"imul",0x69, MRMSrcMem>, OpSize; // R16 = [mem16]*I16
620 def IMUL32rmi : Im32i32<"imul",0x69, MRMSrcMem>; // R32 = [mem32]*I32
621 def IMUL16rmi8 : Im16i8<"imul", 0x6B, MRMSrcMem>, OpSize; // R16 = [mem16]*I8
622 def IMUL32rmi8 : Im32i8<"imul", 0x6B, MRMSrcMem>; // R32 = [mem32]*I8
624 //===----------------------------------------------------------------------===//
625 // Test instructions are just like AND, except they don't generate a result.
626 def TEST8rr : I <"test", 0x84, MRMDestReg>; // flags = R8 & R8
627 def TEST16rr : I <"test", 0x85, MRMDestReg>, OpSize; // flags = R16 & R16
628 def TEST32rr : I <"test", 0x85, MRMDestReg>; // flags = R32 & R32
629 def TEST8mr : Im8 <"test", 0x84, MRMDestMem>; // flags = [mem8] & R8
630 def TEST16mr : Im16 <"test", 0x85, MRMDestMem>, OpSize; // flags = [mem16] & R16
631 def TEST32mr : Im32 <"test", 0x85, MRMDestMem>; // flags = [mem32] & R32
632 def TEST8rm : Im8 <"test", 0x84, MRMSrcMem >; // flags = R8 & [mem8]
633 def TEST16rm : Im16 <"test", 0x85, MRMSrcMem >, OpSize; // flags = R16 & [mem16]
634 def TEST32rm : Im32 <"test", 0x85, MRMSrcMem >; // flags = R32 & [mem32]
636 def TEST8ri : Ii8 <"test", 0xF6, MRM0r >; // flags = R8 & imm8
637 def TEST16ri : Ii16 <"test", 0xF7, MRM0r >, OpSize; // flags = R16 & imm16
638 def TEST32ri : Ii32 <"test", 0xF7, MRM0r >; // flags = R32 & imm32
639 def TEST8mi : Im8i8 <"test", 0xF6, MRM0m >; // flags = [mem8] & imm8
640 def TEST16mi : Im16i16<"test", 0xF7, MRM0m >, OpSize; // flags = [mem16] & imm16
641 def TEST32mi : Im32i32<"test", 0xF7, MRM0m >; // flags = [mem32] & imm32
645 // Condition code ops, incl. set if equal/not equal/...
646 def SAHF : I <"sahf" , 0x9E, RawFrm>, Imp<[AH],[]>; // flags = AH
647 def LAHF : I <"lahf" , 0x9F, RawFrm>, Imp<[],[AH]>; // AH = flags
649 def SETBr : I <"setb" , 0x92, MRM0r>, TB; // R8 = < unsign
650 def SETBm : Im8<"setb" , 0x92, MRM0m>, TB; // [mem8] = < unsign
651 def SETAEr : I <"setae", 0x93, MRM0r>, TB; // R8 = >= unsign
652 def SETAEm : Im8<"setae", 0x93, MRM0m>, TB; // [mem8] = >= unsign
653 def SETEr : I <"sete" , 0x94, MRM0r>, TB; // R8 = ==
654 def SETEm : Im8<"sete" , 0x94, MRM0m>, TB; // [mem8] = ==
655 def SETNEr : I <"setne", 0x95, MRM0r>, TB; // R8 = !=
656 def SETNEm : Im8<"setne", 0x95, MRM0m>, TB; // [mem8] = !=
657 def SETBEr : I <"setbe", 0x96, MRM0r>, TB; // R8 = <= unsign
658 def SETBEm : Im8<"setbe", 0x96, MRM0m>, TB; // [mem8] = <= unsign
659 def SETAr : I <"seta" , 0x97, MRM0r>, TB; // R8 = > signed
660 def SETAm : Im8<"seta" , 0x97, MRM0m>, TB; // [mem8] = > signed
661 def SETSr : I <"sets" , 0x98, MRM0r>, TB; // R8 = <sign bit>
662 def SETSm : Im8<"sets" , 0x98, MRM0m>, TB; // [mem8] = <sign bit>
663 def SETNSr : I <"setns", 0x99, MRM0r>, TB; // R8 = !<sign bit>
664 def SETNSm : Im8<"setns", 0x99, MRM0m>, TB; // [mem8] = !<sign bit>
665 def SETLr : I <"setl" , 0x9C, MRM0r>, TB; // R8 = < signed
666 def SETLm : Im8<"setl" , 0x9C, MRM0m>, TB; // [mem8] = < signed
667 def SETGEr : I <"setge", 0x9D, MRM0r>, TB; // R8 = >= signed
668 def SETGEm : Im8<"setge", 0x9D, MRM0m>, TB; // [mem8] = >= signed
669 def SETLEr : I <"setle", 0x9E, MRM0r>, TB; // R8 = <= signed
670 def SETLEm : Im8<"setle", 0x9E, MRM0m>, TB; // [mem8] = <= signed
671 def SETGr : I <"setg" , 0x9F, MRM0r>, TB; // R8 = < signed
672 def SETGm : Im8<"setg" , 0x9F, MRM0m>, TB; // [mem8] = < signed
674 // Integer comparisons
675 def CMP8rr : I <"cmp", 0x38, MRMDestReg>; // compare R8, R8
676 def CMP16rr : I <"cmp", 0x39, MRMDestReg>, OpSize; // compare R16, R16
677 def CMP32rr : I <"cmp", 0x39, MRMDestReg>, // compare R32, R32
678 Pattern<(isVoid (unspec2 R32, R32))>;
679 def CMP8mr : Im8 <"cmp", 0x38, MRMDestMem>; // compare [mem8], R8
680 def CMP16mr : Im16 <"cmp", 0x39, MRMDestMem>, OpSize; // compare [mem16], R16
681 def CMP32mr : Im32 <"cmp", 0x39, MRMDestMem>; // compare [mem32], R32
682 def CMP8rm : Im8 <"cmp", 0x3A, MRMSrcMem >; // compare R8, [mem8]
683 def CMP16rm : Im16 <"cmp", 0x3B, MRMSrcMem >, OpSize; // compare R16, [mem16]
684 def CMP32rm : Im32 <"cmp", 0x3B, MRMSrcMem >; // compare R32, [mem32]
685 def CMP8ri : Ii8 <"cmp", 0x80, MRM7r >; // compare R8, imm8
686 def CMP16ri : Ii16 <"cmp", 0x81, MRM7r >, OpSize; // compare R16, imm16
687 def CMP32ri : Ii32 <"cmp", 0x81, MRM7r >; // compare R32, imm32
688 def CMP8mi : Im8i8 <"cmp", 0x80, MRM7m >; // compare [mem8], imm8
689 def CMP16mi : Im16i16<"cmp", 0x81, MRM7m >, OpSize; // compare [mem16], imm16
690 def CMP32mi : Im32i32<"cmp", 0x81, MRM7m >; // compare [mem32], imm32
692 // Sign/Zero extenders
693 def MOVSX16rr8 : I <"movsx", 0xBE, MRMSrcReg>, TB, OpSize; // R16 = signext(R8)
694 def MOVSX32rr8 : I <"movsx", 0xBE, MRMSrcReg>, TB; // R32 = signext(R8)
695 def MOVSX32rr16: I <"movsx", 0xBF, MRMSrcReg>, TB; // R32 = signext(R16)
696 def MOVSX16rm8 : Im8 <"movsx", 0xBE, MRMSrcMem>, TB, OpSize; // R16 = signext([mem8])
697 def MOVSX32rm8 : Im8 <"movsx", 0xBE, MRMSrcMem>, TB; // R32 = signext([mem8])
698 def MOVSX32rm16: Im16<"movsx", 0xBF, MRMSrcMem>, TB; // R32 = signext([mem16])
700 def MOVZX16rr8 : I <"movzx", 0xB6, MRMSrcReg>, TB, OpSize; // R16 = zeroext(R8)
701 def MOVZX32rr8 : I <"movzx", 0xB6, MRMSrcReg>, TB; // R32 = zeroext(R8)
702 def MOVZX32rr16: I <"movzx", 0xB7, MRMSrcReg>, TB; // R32 = zeroext(R16)
703 def MOVZX16rm8 : Im8 <"movzx", 0xB6, MRMSrcMem>, TB, OpSize; // R16 = zeroext([mem8])
704 def MOVZX32rm8 : Im8 <"movzx", 0xB6, MRMSrcMem>, TB; // R32 = zeroext([mem8])
705 def MOVZX32rm16: Im16<"movzx", 0xB7, MRMSrcMem>, TB; // R32 = zeroext([mem16])
708 //===----------------------------------------------------------------------===//
709 // Floating point support
710 //===----------------------------------------------------------------------===//
712 // FIXME: These need to indicate mod/ref sets for FP regs... & FP 'TOP'
714 // Floating point instruction templates
715 class FPInst<string n, bits<8> o, Format F, FPFormat fp, MemType m, ImmType i>
716 : X86Inst<n, o, F, m, i> { let FPForm = fp; let FPFormBits = FPForm.Value; }
718 class FPI<string n, bits<8> o, Format F, FPFormat fp> : FPInst<n, o, F, fp, NoMem, NoImm>;
720 class FPIM<string n, bits<8> o, Format F, FPFormat fp, MemType m> : FPInst<n, o, F, fp, m, NoImm>;
722 class FPI16m<string n, bits<8> o, Format F, FPFormat fp> : FPIM<n, o, F, fp, Mem16>;
723 class FPI32m<string n, bits<8> o, Format F, FPFormat fp> : FPIM<n, o, F, fp, Mem32>;
724 class FPI64m<string n, bits<8> o, Format F, FPFormat fp> : FPIM<n, o, F, fp, Mem64>;
725 class FPI80m<string n, bits<8> o, Format F, FPFormat fp> : FPIM<n, o, F, fp, Mem80>;
727 // Pseudo instructions for floating point. We use these pseudo instructions
728 // because they can be expanded by the fp spackifier into one of many different
729 // forms of instructions for doing these operations. Until the stackifier runs,
730 // we prefer to be abstract.
731 def FpMOV : FPI<"FMOV", 0, Pseudo, SpecialFP>; // f1 = fmov f2
732 def FpADD : FPI<"FADD", 0, Pseudo, TwoArgFP>; // f1 = fadd f2, f3
733 def FpSUB : FPI<"FSUB", 0, Pseudo, TwoArgFP>; // f1 = fsub f2, f3
734 def FpMUL : FPI<"FMUL", 0, Pseudo, TwoArgFP>; // f1 = fmul f2, f3
735 def FpDIV : FPI<"FDIV", 0, Pseudo, TwoArgFP>; // f1 = fdiv f2, f3
737 def FpUCOM : FPI<"FUCOM", 0, Pseudo, TwoArgFP>; // FPSW = fucom f1, f2
738 def FpUCOMI : FPI<"FUCOMI", 0, Pseudo, TwoArgFP>; // CC = fucomi f1, f2
739 def FpGETRESULT : FPI<"FGETRESULT",0, Pseudo, SpecialFP>; // FPR = ST(0)
740 def FpSETRESULT : FPI<"FSETRESULT",0, Pseudo, SpecialFP>; // ST(0) = FPR
742 // FADD reg, mem: Before stackification, these are represented by: R1 = FADD* R2, [mem]
743 def FADD32m : FPI32m<"fadd", 0xD8, MRM0m, OneArgFPRW>; // ST(0) = ST(0) + [mem32real]
744 def FADD64m : FPI64m<"fadd", 0xDC, MRM0m, OneArgFPRW>; // ST(0) = ST(0) + [mem64real]
745 def FIADD16m : FPI16m<"fiadd", 0xDE, MRM0m, OneArgFPRW>; // ST(0) = ST(0) + [mem16int]
746 def FIADD32m : FPI32m<"fiadd", 0xDA, MRM0m, OneArgFPRW>; // ST(0) = ST(0) + [mem32int]
748 // FMUL reg, mem: Before stackification, these are represented by: R1 = FMUL* R2, [mem]
749 def FMUL32m : FPI32m<"fmul", 0xD8, MRM1m, OneArgFPRW>; // ST(0) = ST(0) * [mem32real]
750 def FMUL64m : FPI64m<"fmul", 0xDC, MRM1m, OneArgFPRW>; // ST(0) = ST(0) * [mem64real]
751 def FIMUL16m : FPI16m<"fimul", 0xDE, MRM1m, OneArgFPRW>; // ST(0) = ST(0) * [mem16int]
752 def FIMUL32m : FPI32m<"fimul", 0xDA, MRM1m, OneArgFPRW>; // ST(0) = ST(0) * [mem32int]
754 // FSUB reg, mem: Before stackification, these are represented by: R1 = FSUB* R2, [mem]
755 def FSUB32m : FPI32m<"fsub", 0xD8, MRM4m, OneArgFPRW>; // ST(0) = ST(0) - [mem32real]
756 def FSUB64m : FPI64m<"fsub", 0xDC, MRM4m, OneArgFPRW>; // ST(0) = ST(0) - [mem64real]
757 def FISUB16m : FPI16m<"fisub", 0xDE, MRM4m, OneArgFPRW>; // ST(0) = ST(0) - [mem16int]
758 def FISUB32m : FPI32m<"fisub", 0xDA, MRM4m, OneArgFPRW>; // ST(0) = ST(0) - [mem32int]
760 // FSUBR reg, mem: Before stackification, these are represented by: R1 = FSUBR* R2, [mem]
761 // Note that the order of operands does not reflect the operation being performed.
762 def FSUBR32m : FPI32m<"fsubr", 0xD8, MRM5m, OneArgFPRW>; // ST(0) = [mem32real] - ST(0)
763 def FSUBR64m : FPI64m<"fsubr", 0xDC, MRM5m, OneArgFPRW>; // ST(0) = [mem64real] - ST(0)
764 def FISUBR16m : FPI16m<"fisubr", 0xDE, MRM5m, OneArgFPRW>; // ST(0) = [mem16int] - ST(0)
765 def FISUBR32m : FPI32m<"fisubr", 0xDA, MRM5m, OneArgFPRW>; // ST(0) = [mem32int] - ST(0)
767 // FDIV reg, mem: Before stackification, these are represented by: R1 = FDIV* R2, [mem]
768 def FDIV32m : FPI32m<"fdiv", 0xD8, MRM6m, OneArgFPRW>; // ST(0) = ST(0) / [mem32real]
769 def FDIV64m : FPI64m<"fdiv", 0xDC, MRM6m, OneArgFPRW>; // ST(0) = ST(0) / [mem64real]
770 def FIDIV16m : FPI16m<"fidiv", 0xDE, MRM6m, OneArgFPRW>; // ST(0) = ST(0) / [mem16int]
771 def FIDIV32m : FPI32m<"fidiv", 0xDA, MRM6m, OneArgFPRW>; // ST(0) = ST(0) / [mem32int]
773 // FDIVR reg, mem: Before stackification, these are represented by: R1 = FDIVR* R2, [mem]
774 // Note that the order of operands does not reflect the operation being performed.
775 def FDIVR32m : FPI32m<"fdivr", 0xD8, MRM7m, OneArgFPRW>; // ST(0) = [mem32real] / ST(0)
776 def FDIVR64m : FPI64m<"fdivr", 0xDC, MRM7m, OneArgFPRW>; // ST(0) = [mem64real] / ST(0)
777 def FIDIVR16m : FPI16m<"fidivr", 0xDE, MRM7m, OneArgFPRW>; // ST(0) = [mem16int] / ST(0)
778 def FIDIVR32m : FPI32m<"fidivr", 0xDA, MRM7m, OneArgFPRW>; // ST(0) = [mem32int] / ST(0)
781 // Floating point cmovs...
782 let isTwoAddress = 1, Uses = [ST0], Defs = [ST0], printImplicitUsesBefore = 1 in {
783 def FCMOVB : FPI <"fcmovb" , 0xC0, AddRegFrm, CondMovFP>, DA; // fcmovb ST(i) -> ST(0)
784 def FCMOVBE : FPI <"fcmovbe", 0xD0, AddRegFrm, CondMovFP>, DA; // fcmovbe ST(i) -> ST(0)
785 def FCMOVE : FPI <"fcmove" , 0xC8, AddRegFrm, CondMovFP>, DA; // fcmove ST(i) -> ST(0)
786 def FCMOVAE : FPI <"fcmovae", 0xC0, AddRegFrm, CondMovFP>, DB; // fcmovae ST(i) -> ST(0)
787 def FCMOVA : FPI <"fcmova" , 0xD0, AddRegFrm, CondMovFP>, DB; // fcmova ST(i) -> ST(0)
788 def FCMOVNE : FPI <"fcmovne", 0xC8, AddRegFrm, CondMovFP>, DB; // fcmovne ST(i) -> ST(0)
791 // Floating point loads & stores...
792 def FLDrr : FPI <"fld" , 0xC0, AddRegFrm, NotFP>, D9; // push(ST(i))
793 def FLD32m : FPI32m <"fld" , 0xD9, MRM0m , ZeroArgFP>; // load float
794 def FLD64m : FPI64m <"fld" , 0xDD, MRM0m , ZeroArgFP>; // load double
795 def FLD80m : FPI80m <"fld" , 0xDB, MRM5m , ZeroArgFP>; // load extended
796 def FILD16m : FPI16m <"fild" , 0xDF, MRM0m , ZeroArgFP>; // load signed short
797 def FILD32m : FPI32m <"fild" , 0xDB, MRM0m , ZeroArgFP>; // load signed int
798 def FILD64m : FPI64m <"fild" , 0xDF, MRM5m , ZeroArgFP>; // load signed long
800 def FSTrr : FPI <"fst" , 0xD0, AddRegFrm, NotFP >, DD; // ST(i) = ST(0)
801 def FSTPrr : FPI <"fstp", 0xD8, AddRegFrm, NotFP >, DD; // ST(i) = ST(0), pop
802 def FST32m : FPI32m <"fst" , 0xD9, MRM2m , OneArgFP>; // store float
803 def FST64m : FPI64m <"fst" , 0xDD, MRM2m , OneArgFP>; // store double
804 def FSTP32m : FPI32m <"fstp", 0xD9, MRM3m , OneArgFP>; // store float, pop
805 def FSTP64m : FPI64m <"fstp", 0xDD, MRM3m , OneArgFP>; // store double, pop
806 def FSTP80m : FPI80m <"fstp", 0xDB, MRM7m , OneArgFP>; // store extended, pop
808 def FIST16m : FPI16m <"fist", 0xDF, MRM2m , OneArgFP>; // store signed short
809 def FIST32m : FPI32m <"fist", 0xDB, MRM2m , OneArgFP>; // store signed int
810 def FISTP16m : FPI16m <"fistp", 0xDF, MRM3m , NotFP >; // store signed short, pop
811 def FISTP32m : FPI32m <"fistp", 0xDB, MRM3m , NotFP >; // store signed int, pop
812 def FISTP64m : FPI64m <"fistpll", 0xDF, MRM7m , OneArgFP>; // store signed long, pop
814 def FXCH : FPI <"fxch", 0xC8, AddRegFrm, NotFP>, D9; // fxch ST(i), ST(0)
816 // Floating point constant loads...
817 def FLD0 : FPI<"fldz", 0xEE, RawFrm, ZeroArgFP>, D9;
818 def FLD1 : FPI<"fld1", 0xE8, RawFrm, ZeroArgFP>, D9;
821 // Unary operations...
822 def FCHS : FPI<"fchs", 0xE0, RawFrm, OneArgFPRW>, D9; // f1 = fchs f2
823 def FTST : FPI<"ftst", 0xE4, RawFrm, OneArgFP>, D9; // ftst ST(0)
825 // Binary arithmetic operations...
826 class FPST0rInst<string n, bits<8> o> : I<n, o, AddRegFrm>, D8 {
827 list<Register> Uses = [ST0];
828 list<Register> Defs = [ST0];
830 class FPrST0Inst<string n, bits<8> o> : I<n, o, AddRegFrm>, DC {
831 bit printImplicitUsesAfter = 1;
832 list<Register> Uses = [ST0];
834 class FPrST0PInst<string n, bits<8> o> : I<n, o, AddRegFrm>, DE {
835 list<Register> Uses = [ST0];
838 def FADDST0r : FPST0rInst <"fadd", 0xC0>;
839 def FADDrST0 : FPrST0Inst <"fadd", 0xC0>;
840 def FADDPrST0 : FPrST0PInst<"faddp", 0xC0>;
842 def FSUBRST0r : FPST0rInst <"fsubr", 0xE8>;
843 def FSUBrST0 : FPrST0Inst <"fsub", 0xE8>;
844 def FSUBPrST0 : FPrST0PInst<"fsubp", 0xE8>;
846 def FSUBST0r : FPST0rInst <"fsub", 0xE0>;
847 def FSUBRrST0 : FPrST0Inst <"fsubr", 0xE0>;
848 def FSUBRPrST0 : FPrST0PInst<"fsubrp", 0xE0>;
850 def FMULST0r : FPST0rInst <"fmul", 0xC8>;
851 def FMULrST0 : FPrST0Inst <"fmul", 0xC8>;
852 def FMULPrST0 : FPrST0PInst<"fmulp", 0xC8>;
854 def FDIVRST0r : FPST0rInst <"fdivr", 0xF8>;
855 def FDIVrST0 : FPrST0Inst <"fdiv", 0xF8>;
856 def FDIVPrST0 : FPrST0PInst<"fdivp", 0xF8>;
858 def FDIVST0r : FPST0rInst <"fdiv", 0xF0>; // ST(0) = ST(0) / ST(i)
859 def FDIVRrST0 : FPrST0Inst <"fdivr", 0xF0>; // ST(i) = ST(0) / ST(i)
860 def FDIVRPrST0 : FPrST0PInst<"fdivrp", 0xF0>; // ST(i) = ST(0) / ST(i), pop
862 // Floating point compares
863 def FUCOMr : I<"fucom" , 0xE0, AddRegFrm>, DD, Imp<[ST0],[]>; // FPSW = compare ST(0) with ST(i)
864 def FUCOMPr : I<"fucomp" , 0xE8, AddRegFrm>, DD, Imp<[ST0],[]>; // FPSW = compare ST(0) with ST(i), pop
865 def FUCOMPPr : I<"fucompp", 0xE9, RawFrm >, DA, Imp<[ST0],[]>; // compare ST(0) with ST(1), pop, pop
867 let printImplicitUsesBefore = 1 in {
868 def FUCOMIr : I<"fucomi" , 0xE8, AddRegFrm>, DB, Imp<[ST0],[]>; // CC = compare ST(0) with ST(i)
869 def FUCOMIPr : I<"fucomip", 0xE8, AddRegFrm>, DF, Imp<[ST0],[]>; // CC = compare ST(0) with ST(i), pop
872 // Floating point flag ops
873 def FNSTSW8r : I <"fnstsw" , 0xE0, RawFrm>, DF, Imp<[],[AX]>; // AX = fp flags
874 def FNSTCW16m : Im16<"fnstcw" , 0xD9, MRM7m >; // [mem16] = X87 control world
875 def FLDCW16m : Im16<"fldcw" , 0xD9, MRM5m >; // X87 control world = [mem16]
878 //===----------------------------------------------------------------------===//
879 // Instruction Expanders
882 def RET_R32 : Expander<(ret R32:$reg),
883 [(MOV32rr EAX, R32:$reg),
886 // FIXME: This should eventually just be implemented by defining a frameidx as a
887 // value address for a load.
888 def LOAD_FI16 : Expander<(set R16:$dest, (load frameidx:$fi)),
889 [(MOV16rm R16:$dest, frameidx:$fi, 1, 0/*NoReg*/, 0)]>;
891 def LOAD_FI32 : Expander<(set R32:$dest, (load frameidx:$fi)),
892 [(MOV32rm R32:$dest, frameidx:$fi, 1, 0/*NoReg*/, 0)]>;
895 def LOAD_R16 : Expander<(set R16:$dest, (load R32:$src)),
896 [(MOV16rm R16:$dest, R32:$src, 1, 0/*NoReg*/, 0)]>;
898 def LOAD_R32 : Expander<(set R32:$dest, (load R32:$src)),
899 [(MOV32rm R32:$dest, R32:$src, 1, 0/*NoReg*/, 0)]>;
901 def BR_EQ : Expander<(brcond (seteq R32:$a1, R32:$a2),
902 basicblock:$d1, basicblock:$d2),
903 [(CMP32rr R32:$a1, R32:$a2),
905 (JMP basicblock:$d2)]>;