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      1 //===-- X86InstrFormats.td - X86 Instruction Formats -------*- tablegen -*-===//
      2 //
      3 //                     The LLVM Compiler Infrastructure
      4 //
      5 // This file is distributed under the University of Illinois Open Source
      6 // License. See LICENSE.TXT for details.
      7 //
      8 //===----------------------------------------------------------------------===//
      9 
     10 //===----------------------------------------------------------------------===//
     11 // X86 Instruction Format Definitions.
     12 //
     13 
     14 // Format specifies the encoding used by the instruction.  This is part of the
     15 // ad-hoc solution used to emit machine instruction encodings by our machine
     16 // code emitter.
     17 class Format<bits<7> val> {
     18   bits<7> Value = val;
     19 }
     20 
     21 def Pseudo     : Format<0>; def RawFrm     : Format<1>;
     22 def AddRegFrm  : Format<2>; def MRMDestReg : Format<3>;
     23 def MRMDestMem : Format<4>; def MRMSrcReg  : Format<5>;
     24 def MRMSrcMem  : Format<6>; def RawFrmMemOffs : Format<7>;
     25 def RawFrmSrc  : Format<8>; def RawFrmDst     : Format<9>;
     26 def RawFrmDstSrc: Format<10>;
     27 def RawFrmImm8 : Format<11>;
     28 def RawFrmImm16 : Format<12>;
     29 def MRMXr  : Format<14>; def MRMXm  : Format<15>;
     30 def MRM0r  : Format<16>; def MRM1r  : Format<17>; def MRM2r  : Format<18>;
     31 def MRM3r  : Format<19>; def MRM4r  : Format<20>; def MRM5r  : Format<21>;
     32 def MRM6r  : Format<22>; def MRM7r  : Format<23>;
     33 def MRM0m  : Format<24>; def MRM1m  : Format<25>; def MRM2m  : Format<26>;
     34 def MRM3m  : Format<27>; def MRM4m  : Format<28>; def MRM5m  : Format<29>;
     35 def MRM6m  : Format<30>; def MRM7m  : Format<31>;
     36 def MRM_C0 : Format<32>; def MRM_C1 : Format<33>; def MRM_C2 : Format<34>;
     37 def MRM_C3 : Format<35>; def MRM_C4 : Format<36>; def MRM_C5 : Format<37>;
     38 def MRM_C6 : Format<38>; def MRM_C7 : Format<39>; def MRM_C8 : Format<40>;
     39 def MRM_C9 : Format<41>; def MRM_CA : Format<42>; def MRM_CB : Format<43>;
     40 def MRM_CC : Format<44>; def MRM_CD : Format<45>; def MRM_CE : Format<46>;
     41 def MRM_CF : Format<47>; def MRM_D0 : Format<48>; def MRM_D1 : Format<49>;
     42 def MRM_D2 : Format<50>; def MRM_D3 : Format<51>; def MRM_D4 : Format<52>;
     43 def MRM_D5 : Format<53>; def MRM_D6 : Format<54>; def MRM_D7 : Format<55>;
     44 def MRM_D8 : Format<56>; def MRM_D9 : Format<57>; def MRM_DA : Format<58>;
     45 def MRM_DB : Format<59>; def MRM_DC : Format<60>; def MRM_DD : Format<61>;
     46 def MRM_DE : Format<62>; def MRM_DF : Format<63>; def MRM_E0 : Format<64>;
     47 def MRM_E1 : Format<65>; def MRM_E2 : Format<66>; def MRM_E3 : Format<67>;
     48 def MRM_E4 : Format<68>; def MRM_E5 : Format<69>; def MRM_E6 : Format<70>;
     49 def MRM_E7 : Format<71>; def MRM_E8 : Format<72>; def MRM_E9 : Format<73>;
     50 def MRM_EA : Format<74>; def MRM_EB : Format<75>; def MRM_EC : Format<76>;
     51 def MRM_ED : Format<77>; def MRM_EE : Format<78>; def MRM_EF : Format<79>;
     52 def MRM_F0 : Format<80>; def MRM_F1 : Format<81>; def MRM_F2 : Format<82>;
     53 def MRM_F3 : Format<83>; def MRM_F4 : Format<84>; def MRM_F5 : Format<85>;
     54 def MRM_F6 : Format<86>; def MRM_F7 : Format<87>; def MRM_F8 : Format<88>;
     55 def MRM_F9 : Format<89>; def MRM_FA : Format<90>; def MRM_FB : Format<91>;
     56 def MRM_FC : Format<92>; def MRM_FD : Format<93>; def MRM_FE : Format<94>;
     57 def MRM_FF : Format<95>;
     58 
     59 // ImmType - This specifies the immediate type used by an instruction. This is
     60 // part of the ad-hoc solution used to emit machine instruction encodings by our
     61 // machine code emitter.
     62 class ImmType<bits<4> val> {
     63   bits<4> Value = val;
     64 }
     65 def NoImm      : ImmType<0>;
     66 def Imm8       : ImmType<1>;
     67 def Imm8PCRel  : ImmType<2>;
     68 def Imm16      : ImmType<3>;
     69 def Imm16PCRel : ImmType<4>;
     70 def Imm32      : ImmType<5>;
     71 def Imm32PCRel : ImmType<6>;
     72 def Imm32S     : ImmType<7>;
     73 def Imm64      : ImmType<8>;
     74 
     75 // FPFormat - This specifies what form this FP instruction has.  This is used by
     76 // the Floating-Point stackifier pass.
     77 class FPFormat<bits<3> val> {
     78   bits<3> Value = val;
     79 }
     80 def NotFP      : FPFormat<0>;
     81 def ZeroArgFP  : FPFormat<1>;
     82 def OneArgFP   : FPFormat<2>;
     83 def OneArgFPRW : FPFormat<3>;
     84 def TwoArgFP   : FPFormat<4>;
     85 def CompareFP  : FPFormat<5>;
     86 def CondMovFP  : FPFormat<6>;
     87 def SpecialFP  : FPFormat<7>;
     88 
     89 // Class specifying the SSE execution domain, used by the SSEDomainFix pass.
     90 // Keep in sync with tables in X86InstrInfo.cpp.
     91 class Domain<bits<2> val> {
     92   bits<2> Value = val;
     93 }
     94 def GenericDomain   : Domain<0>;
     95 def SSEPackedSingle : Domain<1>;
     96 def SSEPackedDouble : Domain<2>;
     97 def SSEPackedInt    : Domain<3>;
     98 
     99 // Class specifying the vector form of the decompressed
    100 // displacement of 8-bit.
    101 class CD8VForm<bits<3> val> {
    102   bits<3> Value = val;
    103 }
    104 def CD8VF  : CD8VForm<0>;  // v := VL
    105 def CD8VH  : CD8VForm<1>;  // v := VL/2
    106 def CD8VQ  : CD8VForm<2>;  // v := VL/4
    107 def CD8VO  : CD8VForm<3>;  // v := VL/8
    108 // The tuple (subvector) forms.
    109 def CD8VT1 : CD8VForm<4>;  // v := 1
    110 def CD8VT2 : CD8VForm<5>;  // v := 2
    111 def CD8VT4 : CD8VForm<6>;  // v := 4
    112 def CD8VT8 : CD8VForm<7>;  // v := 8
    113 
    114 // Class specifying the prefix used an opcode extension.
    115 class Prefix<bits<3> val> {
    116   bits<3> Value = val;
    117 }
    118 def NoPrfx : Prefix<0>;
    119 def PS     : Prefix<1>;
    120 def PD     : Prefix<2>;
    121 def XS     : Prefix<3>;
    122 def XD     : Prefix<4>;
    123 
    124 // Class specifying the opcode map.
    125 class Map<bits<3> val> {
    126   bits<3> Value = val;
    127 }
    128 def OB   : Map<0>;
    129 def TB   : Map<1>;
    130 def T8   : Map<2>;
    131 def TA   : Map<3>;
    132 def XOP8 : Map<4>;
    133 def XOP9 : Map<5>;
    134 def XOPA : Map<6>;
    135 
    136 // Class specifying the encoding
    137 class Encoding<bits<2> val> {
    138   bits<2> Value = val;
    139 }
    140 def EncNormal : Encoding<0>;
    141 def EncVEX    : Encoding<1>;
    142 def EncXOP    : Encoding<2>;
    143 def EncEVEX   : Encoding<3>;
    144 
    145 // Operand size for encodings that change based on mode.
    146 class OperandSize<bits<2> val> {
    147   bits<2> Value = val;
    148 }
    149 def OpSizeFixed : OperandSize<0>; // Never needs a 0x66 prefix.
    150 def OpSize16    : OperandSize<1>; // Needs 0x66 prefix in 32-bit mode.
    151 def OpSize32    : OperandSize<2>; // Needs 0x66 prefix in 16-bit mode.
    152 
    153 // Address size for encodings that change based on mode.
    154 class AddressSize<bits<2> val> {
    155   bits<2> Value = val;
    156 }
    157 def AdSizeX  : AddressSize<0>; // Address size determined using addr operand.
    158 def AdSize16 : AddressSize<1>; // Encodes a 16-bit address.
    159 def AdSize32 : AddressSize<2>; // Encodes a 32-bit address.
    160 def AdSize64 : AddressSize<3>; // Encodes a 64-bit address.
    161 
    162 // Prefix byte classes which are used to indicate to the ad-hoc machine code
    163 // emitter that various prefix bytes are required.
    164 class OpSize16 { OperandSize OpSize = OpSize16; }
    165 class OpSize32 { OperandSize OpSize = OpSize32; }
    166 class AdSize16 { AddressSize AdSize = AdSize16; }
    167 class AdSize32 { AddressSize AdSize = AdSize32; }
    168 class AdSize64 { AddressSize AdSize = AdSize64; }
    169 class REX_W  { bit hasREX_WPrefix = 1; }
    170 class LOCK   { bit hasLockPrefix = 1; }
    171 class REP    { bit hasREPPrefix = 1; }
    172 class TB     { Map OpMap = TB; }
    173 class T8     { Map OpMap = T8; }
    174 class TA     { Map OpMap = TA; }
    175 class XOP8   { Map OpMap = XOP8; Prefix OpPrefix = PS; }
    176 class XOP9   { Map OpMap = XOP9; Prefix OpPrefix = PS; }
    177 class XOPA   { Map OpMap = XOPA; Prefix OpPrefix = PS; }
    178 class OBXS   { Prefix OpPrefix = XS; }
    179 class PS   : TB { Prefix OpPrefix = PS; }
    180 class PD   : TB { Prefix OpPrefix = PD; }
    181 class XD   : TB { Prefix OpPrefix = XD; }
    182 class XS   : TB { Prefix OpPrefix = XS; }
    183 class T8PS : T8 { Prefix OpPrefix = PS; }
    184 class T8PD : T8 { Prefix OpPrefix = PD; }
    185 class T8XD : T8 { Prefix OpPrefix = XD; }
    186 class T8XS : T8 { Prefix OpPrefix = XS; }
    187 class TAPS : TA { Prefix OpPrefix = PS; }
    188 class TAPD : TA { Prefix OpPrefix = PD; }
    189 class TAXD : TA { Prefix OpPrefix = XD; }
    190 class VEX    { Encoding OpEnc = EncVEX; }
    191 class VEX_W  { bit hasVEX_WPrefix = 1; }
    192 class VEX_4V : VEX { bit hasVEX_4V = 1; }
    193 class VEX_4VOp3 : VEX { bit hasVEX_4VOp3 = 1; }
    194 class VEX_I8IMM { bit hasVEX_i8ImmReg = 1; }
    195 class VEX_L  { bit hasVEX_L = 1; }
    196 class VEX_LIG { bit ignoresVEX_L = 1; }
    197 class EVEX : VEX { Encoding OpEnc = EncEVEX; }
    198 class EVEX_4V : VEX_4V { Encoding OpEnc = EncEVEX; }
    199 class EVEX_K { bit hasEVEX_K = 1; }
    200 class EVEX_KZ : EVEX_K { bit hasEVEX_Z = 1; }
    201 class EVEX_B { bit hasEVEX_B = 1; }
    202 class EVEX_RC { bit hasEVEX_RC = 1; }
    203 class EVEX_V512 { bit hasEVEX_L2 = 1; bit hasVEX_L = 0; }
    204 class EVEX_V256 { bit hasEVEX_L2 = 0; bit hasVEX_L = 1; }
    205 class EVEX_V128 { bit hasEVEX_L2 = 0; bit hasVEX_L = 0; }
    206 
    207 // Specify AVX512 8-bit compressed displacement encoding based on the vector
    208 // element size in bits (8, 16, 32, 64) and the CDisp8 form.
    209 class EVEX_CD8<int esize, CD8VForm form> {
    210   int CD8_EltSize = !srl(esize, 3);
    211   bits<3> CD8_Form = form.Value;
    212 }
    213 
    214 class Has3DNow0F0FOpcode  { bit has3DNow0F0FOpcode = 1; }
    215 class MemOp4 { bit hasMemOp4Prefix = 1; }
    216 class XOP { Encoding OpEnc = EncXOP; }
    217 class XOP_4V : XOP { bit hasVEX_4V = 1; }
    218 class XOP_4VOp3 : XOP { bit hasVEX_4VOp3 = 1; }
    219 
    220 class X86Inst<bits<8> opcod, Format f, ImmType i, dag outs, dag ins,
    221               string AsmStr,
    222               InstrItinClass itin,
    223               Domain d = GenericDomain>
    224   : Instruction {
    225   let Namespace = "X86";
    226 
    227   bits<8> Opcode = opcod;
    228   Format Form = f;
    229   bits<7> FormBits = Form.Value;
    230   ImmType ImmT = i;
    231 
    232   dag OutOperandList = outs;
    233   dag InOperandList = ins;
    234   string AsmString = AsmStr;
    235 
    236   // If this is a pseudo instruction, mark it isCodeGenOnly.
    237   let isCodeGenOnly = !eq(!cast<string>(f), "Pseudo");
    238 
    239   let Itinerary = itin;
    240 
    241   //
    242   // Attributes specific to X86 instructions...
    243   //
    244   bit ForceDisassemble = 0; // Force instruction to disassemble even though it's
    245                             // isCodeGenonly. Needed to hide an ambiguous
    246                             // AsmString from the parser, but still disassemble.
    247 
    248   OperandSize OpSize = OpSizeFixed; // Does this instruction's encoding change
    249                                     // based on operand size of the mode?
    250   bits<2> OpSizeBits = OpSize.Value;
    251   AddressSize AdSize = AdSizeX; // Does this instruction's encoding change
    252                                 // based on address size of the mode?
    253   bits<2> AdSizeBits = AdSize.Value;
    254 
    255   Prefix OpPrefix = NoPrfx; // Which prefix byte does this inst have?
    256   bits<3> OpPrefixBits = OpPrefix.Value;
    257   Map OpMap = OB;           // Which opcode map does this inst have?
    258   bits<3> OpMapBits = OpMap.Value;
    259   bit hasREX_WPrefix  = 0;  // Does this inst require the REX.W prefix?
    260   FPFormat FPForm = NotFP;  // What flavor of FP instruction is this?
    261   bit hasLockPrefix = 0;    // Does this inst have a 0xF0 prefix?
    262   Domain ExeDomain = d;
    263   bit hasREPPrefix = 0;     // Does this inst have a REP prefix?
    264   Encoding OpEnc = EncNormal; // Encoding used by this instruction
    265   bits<2> OpEncBits = OpEnc.Value;
    266   bit hasVEX_WPrefix = 0;   // Does this inst set the VEX_W field?
    267   bit hasVEX_4V = 0;        // Does this inst require the VEX.VVVV field?
    268   bit hasVEX_4VOp3 = 0;     // Does this inst require the VEX.VVVV field to
    269                             // encode the third operand?
    270   bit hasVEX_i8ImmReg = 0;  // Does this inst require the last source register
    271                             // to be encoded in a immediate field?
    272   bit hasVEX_L = 0;         // Does this inst use large (256-bit) registers?
    273   bit ignoresVEX_L = 0;     // Does this instruction ignore the L-bit
    274   bit hasEVEX_K = 0;        // Does this inst require masking?
    275   bit hasEVEX_Z = 0;        // Does this inst set the EVEX_Z field?
    276   bit hasEVEX_L2 = 0;       // Does this inst set the EVEX_L2 field?
    277   bit hasEVEX_B = 0;        // Does this inst set the EVEX_B field?
    278   bits<3> CD8_Form = 0;     // Compressed disp8 form - vector-width.
    279   // Declare it int rather than bits<4> so that all bits are defined when
    280   // assigning to bits<7>.
    281   int CD8_EltSize = 0;      // Compressed disp8 form - element-size in bytes.
    282   bit has3DNow0F0FOpcode =0;// Wacky 3dNow! encoding?
    283   bit hasMemOp4Prefix = 0;  // Same bit as VEX_W, but used for swapping operands
    284   bit hasEVEX_RC = 0;       // Explicitly specified rounding control in FP instruction.
    285 
    286   bits<2> EVEX_LL;
    287   let EVEX_LL{0} = hasVEX_L;
    288   let EVEX_LL{1} = hasEVEX_L2;
    289   // Vector size in bytes.
    290   bits<7> VectSize = !shl(16, EVEX_LL);
    291 
    292   // The scaling factor for AVX512's compressed displacement is either
    293   //   - the size of a  power-of-two number of elements or
    294   //   - the size of a single element for broadcasts or
    295   //   - the total vector size divided by a power-of-two number.
    296   // Possible values are: 0 (non-AVX512 inst), 1, 2, 4, 8, 16, 32 and 64.
    297   bits<7> CD8_Scale = !if (!eq (OpEnc.Value, EncEVEX.Value),
    298                            !if (CD8_Form{2},
    299                                 !shl(CD8_EltSize, CD8_Form{1-0}),
    300                                 !if (hasEVEX_B,
    301                                      CD8_EltSize,
    302                                      !srl(VectSize, CD8_Form{1-0}))), 0);
    303 
    304   // TSFlags layout should be kept in sync with X86BaseInfo.h.
    305   let TSFlags{6-0}   = FormBits;
    306   let TSFlags{8-7}   = OpSizeBits;
    307   let TSFlags{10-9}  = AdSizeBits;
    308   let TSFlags{13-11} = OpPrefixBits;
    309   let TSFlags{16-14} = OpMapBits;
    310   let TSFlags{17}    = hasREX_WPrefix;
    311   let TSFlags{21-18} = ImmT.Value;
    312   let TSFlags{24-22} = FPForm.Value;
    313   let TSFlags{25}    = hasLockPrefix;
    314   let TSFlags{26}    = hasREPPrefix;
    315   let TSFlags{28-27} = ExeDomain.Value;
    316   let TSFlags{30-29} = OpEncBits;
    317   let TSFlags{38-31} = Opcode;
    318   let TSFlags{39}    = hasVEX_WPrefix;
    319   let TSFlags{40}    = hasVEX_4V;
    320   let TSFlags{41}    = hasVEX_4VOp3;
    321   let TSFlags{42}    = hasVEX_i8ImmReg;
    322   let TSFlags{43}    = hasVEX_L;
    323   let TSFlags{44}    = ignoresVEX_L;
    324   let TSFlags{45}    = hasEVEX_K;
    325   let TSFlags{46}    = hasEVEX_Z;
    326   let TSFlags{47}    = hasEVEX_L2;
    327   let TSFlags{48}    = hasEVEX_B;
    328   // If we run out of TSFlags bits, it's possible to encode this in 3 bits.
    329   let TSFlags{55-49} = CD8_Scale;
    330   let TSFlags{56}    = has3DNow0F0FOpcode;
    331   let TSFlags{57}    = hasMemOp4Prefix;
    332   let TSFlags{58}    = hasEVEX_RC;
    333 }
    334 
    335 class PseudoI<dag oops, dag iops, list<dag> pattern>
    336   : X86Inst<0, Pseudo, NoImm, oops, iops, "", NoItinerary> {
    337   let Pattern = pattern;
    338 }
    339 
    340 class I<bits<8> o, Format f, dag outs, dag ins, string asm,
    341         list<dag> pattern, InstrItinClass itin = NoItinerary,
    342         Domain d = GenericDomain>
    343   : X86Inst<o, f, NoImm, outs, ins, asm, itin, d> {
    344   let Pattern = pattern;
    345   let CodeSize = 3;
    346 }
    347 class Ii8 <bits<8> o, Format f, dag outs, dag ins, string asm,
    348            list<dag> pattern, InstrItinClass itin = NoItinerary,
    349            Domain d = GenericDomain>
    350   : X86Inst<o, f, Imm8, outs, ins, asm, itin, d> {
    351   let Pattern = pattern;
    352   let CodeSize = 3;
    353 }
    354 class Ii8PCRel<bits<8> o, Format f, dag outs, dag ins, string asm,
    355                list<dag> pattern, InstrItinClass itin = NoItinerary>
    356   : X86Inst<o, f, Imm8PCRel, outs, ins, asm, itin> {
    357   let Pattern = pattern;
    358   let CodeSize = 3;
    359 }
    360 class Ii16<bits<8> o, Format f, dag outs, dag ins, string asm,
    361            list<dag> pattern, InstrItinClass itin = NoItinerary>
    362   : X86Inst<o, f, Imm16, outs, ins, asm, itin> {
    363   let Pattern = pattern;
    364   let CodeSize = 3;
    365 }
    366 class Ii32<bits<8> o, Format f, dag outs, dag ins, string asm,
    367            list<dag> pattern, InstrItinClass itin = NoItinerary>
    368   : X86Inst<o, f, Imm32, outs, ins, asm, itin> {
    369   let Pattern = pattern;
    370   let CodeSize = 3;
    371 }
    372 class Ii32S<bits<8> o, Format f, dag outs, dag ins, string asm,
    373             list<dag> pattern, InstrItinClass itin = NoItinerary>
    374   : X86Inst<o, f, Imm32S, outs, ins, asm, itin> {
    375   let Pattern = pattern;
    376   let CodeSize = 3;
    377 }
    378 
    379 class Ii16PCRel<bits<8> o, Format f, dag outs, dag ins, string asm,
    380            list<dag> pattern, InstrItinClass itin = NoItinerary>
    381            : X86Inst<o, f, Imm16PCRel, outs, ins, asm, itin> {
    382   let Pattern = pattern;
    383   let CodeSize = 3;
    384 }
    385 
    386 class Ii32PCRel<bits<8> o, Format f, dag outs, dag ins, string asm,
    387            list<dag> pattern, InstrItinClass itin = NoItinerary>
    388   : X86Inst<o, f, Imm32PCRel, outs, ins, asm, itin> {
    389   let Pattern = pattern;
    390   let CodeSize = 3;
    391 }
    392 
    393 // FPStack Instruction Templates:
    394 // FPI - Floating Point Instruction template.
    395 class FPI<bits<8> o, Format F, dag outs, dag ins, string asm,
    396           InstrItinClass itin = NoItinerary>
    397   : I<o, F, outs, ins, asm, [], itin> {}
    398 
    399 // FpI_ - Floating Point Pseudo Instruction template. Not Predicated.
    400 class FpI_<dag outs, dag ins, FPFormat fp, list<dag> pattern,
    401            InstrItinClass itin = NoItinerary>
    402   : X86Inst<0, Pseudo, NoImm, outs, ins, "", itin> {
    403   let FPForm = fp;
    404   let Pattern = pattern;
    405 }
    406 
    407 // Templates for instructions that use a 16- or 32-bit segmented address as
    408 //  their only operand: lcall (FAR CALL) and ljmp (FAR JMP)
    409 //
    410 //   Iseg16 - 16-bit segment selector, 16-bit offset
    411 //   Iseg32 - 16-bit segment selector, 32-bit offset
    412 
    413 class Iseg16 <bits<8> o, Format f, dag outs, dag ins, string asm,
    414               list<dag> pattern, InstrItinClass itin = NoItinerary>
    415       : X86Inst<o, f, Imm16, outs, ins, asm, itin> {
    416   let Pattern = pattern;
    417   let CodeSize = 3;
    418 }
    419 
    420 class Iseg32 <bits<8> o, Format f, dag outs, dag ins, string asm,
    421               list<dag> pattern, InstrItinClass itin = NoItinerary>
    422       : X86Inst<o, f, Imm32, outs, ins, asm, itin> {
    423   let Pattern = pattern;
    424   let CodeSize = 3;
    425 }
    426 
    427 // SI - SSE 1 & 2 scalar instructions
    428 class SI<bits<8> o, Format F, dag outs, dag ins, string asm,
    429          list<dag> pattern, InstrItinClass itin = NoItinerary,
    430          Domain d = GenericDomain>
    431       : I<o, F, outs, ins, asm, pattern, itin, d> {
    432   let Predicates = !if(!eq(OpEnc.Value, EncEVEX.Value), [HasAVX512],
    433                    !if(!eq(OpEnc.Value, EncVEX.Value), [UseAVX],
    434                    !if(!eq(OpPrefix.Value, XS.Value), [UseSSE1],
    435                    !if(!eq(OpPrefix.Value, XD.Value), [UseSSE2],
    436                    !if(!eq(OpPrefix.Value, PD.Value), [UseSSE2],
    437                    [UseSSE1])))));
    438 
    439   // AVX instructions have a 'v' prefix in the mnemonic
    440   let AsmString = !if(!eq(OpEnc.Value, EncEVEX.Value), !strconcat("v", asm),
    441                   !if(!eq(OpEnc.Value, EncVEX.Value), !strconcat("v", asm),
    442                   asm));
    443 }
    444 
    445 // SI - SSE 1 & 2 scalar intrinsics - vex form available on AVX512
    446 class SI_Int<bits<8> o, Format F, dag outs, dag ins, string asm,
    447          list<dag> pattern, InstrItinClass itin = NoItinerary,
    448          Domain d = GenericDomain>
    449       : I<o, F, outs, ins, asm, pattern, itin, d> {
    450   let Predicates = !if(!eq(OpEnc.Value, EncEVEX.Value), [HasAVX512],
    451                    !if(!eq(OpEnc.Value, EncVEX.Value), [HasAVX],
    452                    !if(!eq(OpPrefix.Value, XS.Value), [UseSSE1],
    453                    !if(!eq(OpPrefix.Value, XD.Value), [UseSSE2],
    454                    !if(!eq(OpPrefix.Value, PD.Value), [UseSSE2],
    455                    [UseSSE1])))));
    456 
    457   // AVX instructions have a 'v' prefix in the mnemonic
    458   let AsmString = !if(!eq(OpEnc.Value, EncEVEX.Value), !strconcat("v", asm),
    459                   !if(!eq(OpEnc.Value, EncVEX.Value), !strconcat("v", asm),
    460                   asm));
    461 }
    462 // SIi8 - SSE 1 & 2 scalar instructions - vex form available on AVX512
    463 class SIi8<bits<8> o, Format F, dag outs, dag ins, string asm,
    464            list<dag> pattern, InstrItinClass itin = NoItinerary>
    465       : Ii8<o, F, outs, ins, asm, pattern, itin> {
    466   let Predicates = !if(!eq(OpEnc.Value, EncEVEX.Value), [HasAVX512],
    467                    !if(!eq(OpEnc.Value, EncVEX.Value), [HasAVX],
    468                    !if(!eq(OpPrefix.Value, XS.Value), [UseSSE1],
    469                    [UseSSE2])));
    470 
    471   // AVX instructions have a 'v' prefix in the mnemonic
    472   let AsmString = !if(!eq(OpEnc.Value, EncEVEX.Value), !strconcat("v", asm),
    473                   !if(!eq(OpEnc.Value, EncVEX.Value), !strconcat("v", asm),
    474                   asm));
    475 }
    476 
    477 // PI - SSE 1 & 2 packed instructions
    478 class PI<bits<8> o, Format F, dag outs, dag ins, string asm, list<dag> pattern,
    479          InstrItinClass itin, Domain d>
    480       : I<o, F, outs, ins, asm, pattern, itin, d> {
    481   let Predicates = !if(!eq(OpEnc.Value, EncEVEX.Value), [HasAVX512],
    482                    !if(!eq(OpEnc.Value, EncVEX.Value), [HasAVX],
    483                    !if(!eq(OpPrefix.Value, PD.Value), [UseSSE2],
    484                    [UseSSE1])));
    485 
    486   // AVX instructions have a 'v' prefix in the mnemonic
    487   let AsmString = !if(!eq(OpEnc.Value, EncEVEX.Value), !strconcat("v", asm),
    488                   !if(!eq(OpEnc.Value, EncVEX.Value), !strconcat("v", asm),
    489                   asm));
    490 }
    491 
    492 // MMXPI - SSE 1 & 2 packed instructions with MMX operands
    493 class MMXPI<bits<8> o, Format F, dag outs, dag ins, string asm, list<dag> pattern,
    494             InstrItinClass itin, Domain d>
    495       : I<o, F, outs, ins, asm, pattern, itin, d> {
    496   let Predicates = !if(!eq(OpPrefix.Value, PD.Value), [HasSSE2],
    497                        [HasSSE1]);
    498 }
    499 
    500 // PIi8 - SSE 1 & 2 packed instructions with immediate
    501 class PIi8<bits<8> o, Format F, dag outs, dag ins, string asm,
    502            list<dag> pattern, InstrItinClass itin, Domain d>
    503       : Ii8<o, F, outs, ins, asm, pattern, itin, d> {
    504   let Predicates = !if(!eq(OpEnc.Value, EncEVEX.Value), [HasAVX512],
    505                    !if(!eq(OpEnc.Value, EncVEX.Value), [HasAVX],
    506                    !if(!eq(OpPrefix.Value, PD.Value), [UseSSE2],
    507                    [UseSSE1])));
    508 
    509   // AVX instructions have a 'v' prefix in the mnemonic
    510   let AsmString = !if(!eq(OpEnc.Value, EncEVEX.Value), !strconcat("v", asm),
    511                   !if(!eq(OpEnc.Value, EncVEX.Value), !strconcat("v", asm),
    512                   asm));
    513 }
    514 
    515 // SSE1 Instruction Templates:
    516 //
    517 //   SSI   - SSE1 instructions with XS prefix.
    518 //   PSI   - SSE1 instructions with PS prefix.
    519 //   PSIi8 - SSE1 instructions with ImmT == Imm8 and PS prefix.
    520 //   VSSI  - SSE1 instructions with XS prefix in AVX form.
    521 //   VPSI  - SSE1 instructions with PS prefix in AVX form, packed single.
    522 
    523 class SSI<bits<8> o, Format F, dag outs, dag ins, string asm,
    524           list<dag> pattern, InstrItinClass itin = NoItinerary>
    525       : I<o, F, outs, ins, asm, pattern, itin>, XS, Requires<[UseSSE1]>;
    526 class SSIi8<bits<8> o, Format F, dag outs, dag ins, string asm,
    527             list<dag> pattern, InstrItinClass itin = NoItinerary>
    528       : Ii8<o, F, outs, ins, asm, pattern, itin>, XS, Requires<[UseSSE1]>;
    529 class PSI<bits<8> o, Format F, dag outs, dag ins, string asm,
    530           list<dag> pattern, InstrItinClass itin = NoItinerary>
    531       : I<o, F, outs, ins, asm, pattern, itin, SSEPackedSingle>, PS,
    532         Requires<[UseSSE1]>;
    533 class PSIi8<bits<8> o, Format F, dag outs, dag ins, string asm,
    534             list<dag> pattern, InstrItinClass itin = NoItinerary>
    535       : Ii8<o, F, outs, ins, asm, pattern, itin, SSEPackedSingle>, PS,
    536         Requires<[UseSSE1]>;
    537 class VSSI<bits<8> o, Format F, dag outs, dag ins, string asm,
    538            list<dag> pattern, InstrItinClass itin = NoItinerary>
    539       : I<o, F, outs, ins, !strconcat("v", asm), pattern, itin>, XS,
    540         Requires<[HasAVX]>;
    541 class VPSI<bits<8> o, Format F, dag outs, dag ins, string asm,
    542            list<dag> pattern, InstrItinClass itin = NoItinerary>
    543       : I<o, F, outs, ins, !strconcat("v", asm), pattern, itin, SSEPackedSingle>, PS,
    544         Requires<[HasAVX]>;
    545 
    546 // SSE2 Instruction Templates:
    547 //
    548 //   SDI    - SSE2 instructions with XD prefix.
    549 //   SDIi8  - SSE2 instructions with ImmT == Imm8 and XD prefix.
    550 //   S2SI   - SSE2 instructions with XS prefix.
    551 //   SSDIi8 - SSE2 instructions with ImmT == Imm8 and XS prefix.
    552 //   PDI    - SSE2 instructions with PD prefix, packed double domain.
    553 //   PDIi8  - SSE2 instructions with ImmT == Imm8 and PD prefix.
    554 //   VSDI   - SSE2 scalar instructions with XD prefix in AVX form.
    555 //   VPDI   - SSE2 vector instructions with PD prefix in AVX form,
    556 //                 packed double domain.
    557 //   VS2I   - SSE2 scalar instructions with PD prefix in AVX form.
    558 //   S2I    - SSE2 scalar instructions with PD prefix.
    559 //   MMXSDIi8  - SSE2 instructions with ImmT == Imm8 and XD prefix as well as
    560 //               MMX operands.
    561 //   MMXSSDIi8 - SSE2 instructions with ImmT == Imm8 and XS prefix as well as
    562 //               MMX operands.
    563 
    564 class SDI<bits<8> o, Format F, dag outs, dag ins, string asm,
    565           list<dag> pattern, InstrItinClass itin = NoItinerary>
    566       : I<o, F, outs, ins, asm, pattern, itin>, XD, Requires<[UseSSE2]>;
    567 class SDIi8<bits<8> o, Format F, dag outs, dag ins, string asm,
    568             list<dag> pattern, InstrItinClass itin = NoItinerary>
    569       : Ii8<o, F, outs, ins, asm, pattern, itin>, XD, Requires<[UseSSE2]>;
    570 class S2SI<bits<8> o, Format F, dag outs, dag ins, string asm,
    571            list<dag> pattern, InstrItinClass itin = NoItinerary>
    572       : I<o, F, outs, ins, asm, pattern, itin>, XS, Requires<[UseSSE2]>;
    573 class S2SIi8<bits<8> o, Format F, dag outs, dag ins, string asm,
    574              list<dag> pattern, InstrItinClass itin = NoItinerary>
    575       : Ii8<o, F, outs, ins, asm, pattern>, XS, Requires<[UseSSE2]>;
    576 class PDI<bits<8> o, Format F, dag outs, dag ins, string asm,
    577           list<dag> pattern, InstrItinClass itin = NoItinerary>
    578       : I<o, F, outs, ins, asm, pattern, itin, SSEPackedDouble>, PD,
    579         Requires<[UseSSE2]>;
    580 class PDIi8<bits<8> o, Format F, dag outs, dag ins, string asm,
    581             list<dag> pattern, InstrItinClass itin = NoItinerary>
    582       : Ii8<o, F, outs, ins, asm, pattern, itin, SSEPackedDouble>, PD,
    583         Requires<[UseSSE2]>;
    584 class VSDI<bits<8> o, Format F, dag outs, dag ins, string asm,
    585            list<dag> pattern, InstrItinClass itin = NoItinerary>
    586       : I<o, F, outs, ins, !strconcat("v", asm), pattern, itin>, XD,
    587         Requires<[UseAVX]>;
    588 class VS2SI<bits<8> o, Format F, dag outs, dag ins, string asm,
    589             list<dag> pattern, InstrItinClass itin = NoItinerary>
    590       : I<o, F, outs, ins, !strconcat("v", asm), pattern, itin>, XS,
    591         Requires<[HasAVX]>;
    592 class VPDI<bits<8> o, Format F, dag outs, dag ins, string asm,
    593            list<dag> pattern, InstrItinClass itin = NoItinerary>
    594       : I<o, F, outs, ins, !strconcat("v", asm), pattern, itin, SSEPackedDouble>,
    595         PD, Requires<[HasAVX]>;
    596 class VS2I<bits<8> o, Format F, dag outs, dag ins, string asm,
    597            list<dag> pattern, InstrItinClass itin = NoItinerary>
    598       : I<o, F, outs, ins, !strconcat("v", asm), pattern, itin>, PD,
    599         Requires<[UseAVX]>;
    600 class S2I<bits<8> o, Format F, dag outs, dag ins, string asm,
    601            list<dag> pattern, InstrItinClass itin = NoItinerary>
    602       : I<o, F, outs, ins, asm, pattern, itin>, PD, Requires<[UseSSE2]>;
    603 class MMXSDIi8<bits<8> o, Format F, dag outs, dag ins, string asm,
    604                list<dag> pattern, InstrItinClass itin = NoItinerary>
    605       : Ii8<o, F, outs, ins, asm, pattern, itin>, XD, Requires<[HasSSE2]>;
    606 class MMXS2SIi8<bits<8> o, Format F, dag outs, dag ins, string asm,
    607                 list<dag> pattern, InstrItinClass itin = NoItinerary>
    608       : Ii8<o, F, outs, ins, asm, pattern>, XS, Requires<[HasSSE2]>;
    609 
    610 // SSE3 Instruction Templates:
    611 //
    612 //   S3I   - SSE3 instructions with PD prefixes.
    613 //   S3SI  - SSE3 instructions with XS prefix.
    614 //   S3DI  - SSE3 instructions with XD prefix.
    615 
    616 class S3SI<bits<8> o, Format F, dag outs, dag ins, string asm,
    617            list<dag> pattern, InstrItinClass itin = NoItinerary>
    618       : I<o, F, outs, ins, asm, pattern, itin, SSEPackedSingle>, XS,
    619         Requires<[UseSSE3]>;
    620 class S3DI<bits<8> o, Format F, dag outs, dag ins, string asm,
    621            list<dag> pattern, InstrItinClass itin = NoItinerary>
    622       : I<o, F, outs, ins, asm, pattern, itin, SSEPackedDouble>, XD,
    623         Requires<[UseSSE3]>;
    624 class S3I<bits<8> o, Format F, dag outs, dag ins, string asm,
    625           list<dag> pattern, InstrItinClass itin = NoItinerary>
    626       : I<o, F, outs, ins, asm, pattern, itin, SSEPackedDouble>, PD,
    627         Requires<[UseSSE3]>;
    628 
    629 
    630 // SSSE3 Instruction Templates:
    631 //
    632 //   SS38I - SSSE3 instructions with T8 prefix.
    633 //   SS3AI - SSSE3 instructions with TA prefix.
    634 //   MMXSS38I - SSSE3 instructions with T8 prefix and MMX operands.
    635 //   MMXSS3AI - SSSE3 instructions with TA prefix and MMX operands.
    636 //
    637 // Note: SSSE3 instructions have 64-bit and 128-bit versions. The 64-bit version
    638 // uses the MMX registers. The 64-bit versions are grouped with the MMX
    639 // classes. They need to be enabled even if AVX is enabled.
    640 
    641 class SS38I<bits<8> o, Format F, dag outs, dag ins, string asm,
    642             list<dag> pattern, InstrItinClass itin = NoItinerary>
    643       : I<o, F, outs, ins, asm, pattern, itin, SSEPackedInt>, T8PD,
    644         Requires<[UseSSSE3]>;
    645 class SS3AI<bits<8> o, Format F, dag outs, dag ins, string asm,
    646             list<dag> pattern, InstrItinClass itin = NoItinerary>
    647       : Ii8<o, F, outs, ins, asm, pattern, itin, SSEPackedInt>, TAPD,
    648         Requires<[UseSSSE3]>;
    649 class MMXSS38I<bits<8> o, Format F, dag outs, dag ins, string asm,
    650                list<dag> pattern, InstrItinClass itin = NoItinerary>
    651       : I<o, F, outs, ins, asm, pattern, itin, SSEPackedInt>, T8PS,
    652         Requires<[HasSSSE3]>;
    653 class MMXSS3AI<bits<8> o, Format F, dag outs, dag ins, string asm,
    654                list<dag> pattern, InstrItinClass itin = NoItinerary>
    655       : Ii8<o, F, outs, ins, asm, pattern, itin, SSEPackedInt>, TAPS,
    656         Requires<[HasSSSE3]>;
    657 
    658 // SSE4.1 Instruction Templates:
    659 //
    660 //   SS48I - SSE 4.1 instructions with T8 prefix.
    661 //   SS41AIi8 - SSE 4.1 instructions with TA prefix and ImmT == Imm8.
    662 //
    663 class SS48I<bits<8> o, Format F, dag outs, dag ins, string asm,
    664             list<dag> pattern, InstrItinClass itin = NoItinerary>
    665       : I<o, F, outs, ins, asm, pattern, itin, SSEPackedInt>, T8PD,
    666         Requires<[UseSSE41]>;
    667 class SS4AIi8<bits<8> o, Format F, dag outs, dag ins, string asm,
    668             list<dag> pattern, InstrItinClass itin = NoItinerary>
    669       : Ii8<o, F, outs, ins, asm, pattern, itin, SSEPackedInt>, TAPD,
    670         Requires<[UseSSE41]>;
    671 
    672 // SSE4.2 Instruction Templates:
    673 //
    674 //   SS428I - SSE 4.2 instructions with T8 prefix.
    675 class SS428I<bits<8> o, Format F, dag outs, dag ins, string asm,
    676              list<dag> pattern, InstrItinClass itin = NoItinerary>
    677       : I<o, F, outs, ins, asm, pattern, itin, SSEPackedInt>, T8PD,
    678         Requires<[UseSSE42]>;
    679 
    680 //   SS42FI - SSE 4.2 instructions with T8XD prefix.
    681 // NOTE: 'HasSSE42' is used as SS42FI is only used for CRC32 insns.
    682 class SS42FI<bits<8> o, Format F, dag outs, dag ins, string asm,
    683              list<dag> pattern, InstrItinClass itin = NoItinerary>
    684       : I<o, F, outs, ins, asm, pattern, itin>, T8XD, Requires<[HasSSE42]>;
    685 
    686 //   SS42AI = SSE 4.2 instructions with TA prefix
    687 class SS42AI<bits<8> o, Format F, dag outs, dag ins, string asm,
    688              list<dag> pattern, InstrItinClass itin = NoItinerary>
    689       : Ii8<o, F, outs, ins, asm, pattern, itin, SSEPackedInt>, TAPD,
    690         Requires<[UseSSE42]>;
    691 
    692 // AVX Instruction Templates:
    693 //   Instructions introduced in AVX (no SSE equivalent forms)
    694 //
    695 //   AVX8I - AVX instructions with T8PD prefix.
    696 //   AVXAIi8 - AVX instructions with TAPD prefix and ImmT = Imm8.
    697 class AVX8I<bits<8> o, Format F, dag outs, dag ins, string asm,
    698             list<dag> pattern, InstrItinClass itin = NoItinerary>
    699       : I<o, F, outs, ins, asm, pattern, itin, SSEPackedInt>, T8PD,
    700         Requires<[HasAVX]>;
    701 class AVXAIi8<bits<8> o, Format F, dag outs, dag ins, string asm,
    702               list<dag> pattern, InstrItinClass itin = NoItinerary>
    703       : Ii8<o, F, outs, ins, asm, pattern, itin, SSEPackedInt>, TAPD,
    704         Requires<[HasAVX]>;
    705 
    706 // AVX2 Instruction Templates:
    707 //   Instructions introduced in AVX2 (no SSE equivalent forms)
    708 //
    709 //   AVX28I - AVX2 instructions with T8PD prefix.
    710 //   AVX2AIi8 - AVX2 instructions with TAPD prefix and ImmT = Imm8.
    711 class AVX28I<bits<8> o, Format F, dag outs, dag ins, string asm,
    712             list<dag> pattern, InstrItinClass itin = NoItinerary>
    713       : I<o, F, outs, ins, asm, pattern, itin, SSEPackedInt>, T8PD,
    714         Requires<[HasAVX2]>;
    715 class AVX2AIi8<bits<8> o, Format F, dag outs, dag ins, string asm,
    716               list<dag> pattern, InstrItinClass itin = NoItinerary>
    717       : Ii8<o, F, outs, ins, asm, pattern, itin, SSEPackedInt>, TAPD,
    718         Requires<[HasAVX2]>;
    719 
    720 
    721 // AVX-512 Instruction Templates:
    722 //   Instructions introduced in AVX-512 (no SSE equivalent forms)
    723 //
    724 //   AVX5128I - AVX-512 instructions with T8PD prefix.
    725 //   AVX512AIi8 - AVX-512 instructions with TAPD prefix and ImmT = Imm8.
    726 //   AVX512PDI  - AVX-512 instructions with PD, double packed.
    727 //   AVX512PSI  - AVX-512 instructions with PS, single packed.
    728 //   AVX512XS8I - AVX-512 instructions with T8 and XS prefixes.
    729 //   AVX512XSI  - AVX-512 instructions with XS prefix, generic domain.
    730 //   AVX512BI   - AVX-512 instructions with PD, int packed domain.
    731 //   AVX512SI   - AVX-512 scalar instructions with PD prefix.
    732 
    733 class AVX5128I<bits<8> o, Format F, dag outs, dag ins, string asm,
    734             list<dag> pattern, InstrItinClass itin = NoItinerary>
    735       : I<o, F, outs, ins, asm, pattern, itin, SSEPackedInt>, T8PD,
    736         Requires<[HasAVX512]>;
    737 class AVX5128IBase : T8PD {
    738   Domain ExeDomain = SSEPackedInt;
    739 }
    740 class AVX512XS8I<bits<8> o, Format F, dag outs, dag ins, string asm,
    741             list<dag> pattern, InstrItinClass itin = NoItinerary>
    742       : I<o, F, outs, ins, asm, pattern, itin, SSEPackedInt>, T8XS,
    743         Requires<[HasAVX512]>;
    744 class AVX512XSI<bits<8> o, Format F, dag outs, dag ins, string asm,
    745             list<dag> pattern, InstrItinClass itin = NoItinerary>
    746       : I<o, F, outs, ins, asm, pattern, itin>, XS,
    747         Requires<[HasAVX512]>;
    748 class AVX512XDI<bits<8> o, Format F, dag outs, dag ins, string asm,
    749             list<dag> pattern, InstrItinClass itin = NoItinerary>
    750       : I<o, F, outs, ins, asm, pattern, itin, SSEPackedInt>, XD,
    751         Requires<[HasAVX512]>;
    752 class AVX512BI<bits<8> o, Format F, dag outs, dag ins, string asm,
    753             list<dag> pattern, InstrItinClass itin = NoItinerary>
    754       : I<o, F, outs, ins, asm, pattern, itin, SSEPackedInt>, PD,
    755         Requires<[HasAVX512]>;
    756 class AVX512BIBase : PD {
    757   Domain ExeDomain = SSEPackedInt;
    758 }
    759 class AVX512BIi8<bits<8> o, Format F, dag outs, dag ins, string asm,
    760               list<dag> pattern, InstrItinClass itin = NoItinerary>
    761       : Ii8<o, F, outs, ins, asm, pattern, itin, SSEPackedInt>, PD,
    762         Requires<[HasAVX512]>;
    763 class AVX512BIi8Base : PD {
    764   Domain ExeDomain = SSEPackedInt;
    765   ImmType ImmT = Imm8;
    766 }
    767 class AVX512XSIi8Base : XS {
    768   Domain ExeDomain = SSEPackedInt;
    769   ImmType ImmT = Imm8;
    770 }
    771 class AVX512XDIi8Base : XD {
    772   Domain ExeDomain = SSEPackedInt;
    773   ImmType ImmT = Imm8;
    774 }
    775 class AVX512PSIi8Base : PS {
    776   Domain ExeDomain = SSEPackedSingle;
    777   ImmType ImmT = Imm8;
    778 }
    779 class AVX512PDIi8Base : PD {
    780   Domain ExeDomain = SSEPackedDouble;
    781   ImmType ImmT = Imm8;
    782 }
    783 class AVX512AIi8<bits<8> o, Format F, dag outs, dag ins, string asm,
    784               list<dag> pattern, InstrItinClass itin = NoItinerary>
    785       : Ii8<o, F, outs, ins, asm, pattern, itin, SSEPackedInt>, TAPD,
    786         Requires<[HasAVX512]>;
    787 class AVX512AIi8Base : TAPD {
    788   Domain ExeDomain = SSEPackedInt;
    789   ImmType ImmT = Imm8;
    790 }
    791 class AVX512Ii8<bits<8> o, Format F, dag outs, dag ins, string asm,
    792               list<dag> pattern, InstrItinClass itin = NoItinerary>
    793       : Ii8<o, F, outs, ins, asm, pattern, itin, SSEPackedInt>,
    794         Requires<[HasAVX512]>;
    795 class AVX512PDI<bits<8> o, Format F, dag outs, dag ins, string asm,
    796            list<dag> pattern, InstrItinClass itin = NoItinerary>
    797       : I<o, F, outs, ins, asm, pattern, itin, SSEPackedDouble>, PD,
    798         Requires<[HasAVX512]>;
    799 class AVX512PSI<bits<8> o, Format F, dag outs, dag ins, string asm,
    800            list<dag> pattern, InstrItinClass itin = NoItinerary>
    801       : I<o, F, outs, ins, asm, pattern, itin, SSEPackedSingle>, PS,
    802         Requires<[HasAVX512]>;
    803 class AVX512PIi8<bits<8> o, Format F, dag outs, dag ins, string asm,
    804               list<dag> pattern, Domain d, InstrItinClass itin = NoItinerary>
    805       : Ii8<o, F, outs, ins, asm, pattern, itin, d>, Requires<[HasAVX512]>;
    806 class AVX512PI<bits<8> o, Format F, dag outs, dag ins, string asm,
    807               list<dag> pattern, Domain d, InstrItinClass itin = NoItinerary>
    808       : I<o, F, outs, ins, asm, pattern, itin, d>, Requires<[HasAVX512]>;
    809 class AVX512FMA3<bits<8> o, Format F, dag outs, dag ins, string asm,
    810            list<dag>pattern, InstrItinClass itin = NoItinerary>
    811       : I<o, F, outs, ins, asm, pattern, itin>, T8PD,
    812         EVEX_4V, Requires<[HasAVX512]>;
    813 class AVX512FMA3Base : T8PD, EVEX_4V;
    814 
    815 class AVX512<bits<8> o, Format F, dag outs, dag ins, string asm,
    816            list<dag>pattern, InstrItinClass itin = NoItinerary>
    817       : I<o, F, outs, ins, asm, pattern, itin>, Requires<[HasAVX512]>;
    818 
    819 // AES Instruction Templates:
    820 //
    821 // AES8I
    822 // These use the same encoding as the SSE4.2 T8 and TA encodings.
    823 class AES8I<bits<8> o, Format F, dag outs, dag ins, string asm,
    824             list<dag>pattern, InstrItinClass itin = IIC_AES>
    825       : I<o, F, outs, ins, asm, pattern, itin, SSEPackedInt>, T8PD,
    826         Requires<[HasAES]>;
    827 
    828 class AESAI<bits<8> o, Format F, dag outs, dag ins, string asm,
    829             list<dag> pattern, InstrItinClass itin = NoItinerary>
    830       : Ii8<o, F, outs, ins, asm, pattern, itin, SSEPackedInt>, TAPD,
    831         Requires<[HasAES]>;
    832 
    833 // PCLMUL Instruction Templates
    834 class PCLMULIi8<bits<8> o, Format F, dag outs, dag ins, string asm,
    835                list<dag>pattern, InstrItinClass itin = NoItinerary>
    836       : Ii8<o, F, outs, ins, asm, pattern, itin, SSEPackedInt>, TAPD,
    837         Requires<[HasPCLMUL]>;
    838 
    839 class AVXPCLMULIi8<bits<8> o, Format F, dag outs, dag ins, string asm,
    840                   list<dag>pattern, InstrItinClass itin = NoItinerary>
    841       : Ii8<o, F, outs, ins, asm, pattern, itin, SSEPackedInt>, TAPD,
    842         VEX_4V, Requires<[HasAVX, HasPCLMUL]>;
    843 
    844 // FMA3 Instruction Templates
    845 class FMA3<bits<8> o, Format F, dag outs, dag ins, string asm,
    846            list<dag>pattern, InstrItinClass itin = NoItinerary>
    847       : I<o, F, outs, ins, asm, pattern, itin>, T8PD,
    848         VEX_4V, FMASC, Requires<[HasFMA]>;
    849 
    850 // FMA4 Instruction Templates
    851 class FMA4<bits<8> o, Format F, dag outs, dag ins, string asm,
    852            list<dag>pattern, InstrItinClass itin = NoItinerary>
    853       : Ii8<o, F, outs, ins, asm, pattern, itin>, TAPD,
    854         VEX_4V, VEX_I8IMM, FMASC, Requires<[HasFMA4]>;
    855 
    856 // XOP 2, 3 and 4 Operand Instruction Template
    857 class IXOP<bits<8> o, Format F, dag outs, dag ins, string asm,
    858            list<dag> pattern, InstrItinClass itin = NoItinerary>
    859       : I<o, F, outs, ins, asm, pattern, itin, SSEPackedDouble>,
    860          XOP9, Requires<[HasXOP]>;
    861 
    862 // XOP 2, 3 and 4 Operand Instruction Templates with imm byte
    863 class IXOPi8<bits<8> o, Format F, dag outs, dag ins, string asm,
    864            list<dag> pattern, InstrItinClass itin = NoItinerary>
    865       : Ii8<o, F, outs, ins, asm, pattern, itin, SSEPackedDouble>,
    866          XOP8, Requires<[HasXOP]>;
    867 
    868 //  XOP 5 operand instruction (VEX encoding!)
    869 class IXOP5<bits<8> o, Format F, dag outs, dag ins, string asm,
    870            list<dag>pattern, InstrItinClass itin = NoItinerary>
    871       : Ii8<o, F, outs, ins, asm, pattern, itin, SSEPackedInt>, TAPD,
    872         VEX_4V, VEX_I8IMM, Requires<[HasXOP]>;
    873 
    874 // X86-64 Instruction templates...
    875 //
    876 
    877 class RI<bits<8> o, Format F, dag outs, dag ins, string asm,
    878          list<dag> pattern, InstrItinClass itin = NoItinerary>
    879       : I<o, F, outs, ins, asm, pattern, itin>, REX_W;
    880 class RIi8 <bits<8> o, Format F, dag outs, dag ins, string asm,
    881             list<dag> pattern, InstrItinClass itin = NoItinerary>
    882       : Ii8<o, F, outs, ins, asm, pattern, itin>, REX_W;
    883 class RIi16 <bits<8> o, Format F, dag outs, dag ins, string asm,
    884             list<dag> pattern, InstrItinClass itin = NoItinerary>
    885       : Ii16<o, F, outs, ins, asm, pattern, itin>, REX_W;
    886 class RIi32 <bits<8> o, Format F, dag outs, dag ins, string asm,
    887              list<dag> pattern, InstrItinClass itin = NoItinerary>
    888       : Ii32<o, F, outs, ins, asm, pattern, itin>, REX_W;
    889 class RIi32S <bits<8> o, Format F, dag outs, dag ins, string asm,
    890               list<dag> pattern, InstrItinClass itin = NoItinerary>
    891       : Ii32S<o, F, outs, ins, asm, pattern, itin>, REX_W;
    892 
    893 class RIi64<bits<8> o, Format f, dag outs, dag ins, string asm,
    894             list<dag> pattern, InstrItinClass itin = NoItinerary>
    895   : X86Inst<o, f, Imm64, outs, ins, asm, itin>, REX_W {
    896   let Pattern = pattern;
    897   let CodeSize = 3;
    898 }
    899 
    900 class RIi64_NOREX<bits<8> o, Format f, dag outs, dag ins, string asm,
    901             list<dag> pattern, InstrItinClass itin = NoItinerary>
    902   : X86Inst<o, f, Imm64, outs, ins, asm, itin> {
    903   let Pattern = pattern;
    904   let CodeSize = 3;
    905 }
    906 
    907 class RS2I<bits<8> o, Format F, dag outs, dag ins, string asm,
    908            list<dag> pattern, InstrItinClass itin = NoItinerary>
    909       : S2I<o, F, outs, ins, asm, pattern, itin>, REX_W;
    910 class VRS2I<bits<8> o, Format F, dag outs, dag ins, string asm,
    911            list<dag> pattern, InstrItinClass itin = NoItinerary>
    912       : VS2I<o, F, outs, ins, asm, pattern, itin>, VEX_W;
    913 
    914 // MMX Instruction templates
    915 //
    916 
    917 // MMXI   - MMX instructions with TB prefix.
    918 // MMXI32 - MMX instructions with TB prefix valid only in 32 bit mode.
    919 // MMXI64 - MMX instructions with TB prefix valid only in 64 bit mode.
    920 // MMX2I  - MMX / SSE2 instructions with PD prefix.
    921 // MMXIi8 - MMX instructions with ImmT == Imm8 and PS prefix.
    922 // MMXIi8 - MMX instructions with ImmT == Imm8 and PS prefix.
    923 // MMXID  - MMX instructions with XD prefix.
    924 // MMXIS  - MMX instructions with XS prefix.
    925 class MMXI<bits<8> o, Format F, dag outs, dag ins, string asm,
    926            list<dag> pattern, InstrItinClass itin = NoItinerary>
    927       : I<o, F, outs, ins, asm, pattern, itin>, PS, Requires<[HasMMX]>;
    928 class MMXI32<bits<8> o, Format F, dag outs, dag ins, string asm,
    929              list<dag> pattern, InstrItinClass itin = NoItinerary>
    930       : I<o, F, outs, ins, asm, pattern, itin>, PS, Requires<[HasMMX,Not64BitMode]>;
    931 class MMXI64<bits<8> o, Format F, dag outs, dag ins, string asm,
    932              list<dag> pattern, InstrItinClass itin = NoItinerary>
    933       : I<o, F, outs, ins, asm, pattern, itin>, PS, Requires<[HasMMX,In64BitMode]>;
    934 class MMXRI<bits<8> o, Format F, dag outs, dag ins, string asm,
    935             list<dag> pattern, InstrItinClass itin = NoItinerary>
    936       : I<o, F, outs, ins, asm, pattern, itin>, PS, REX_W, Requires<[HasMMX]>;
    937 class MMX2I<bits<8> o, Format F, dag outs, dag ins, string asm,
    938             list<dag> pattern, InstrItinClass itin = NoItinerary>
    939       : I<o, F, outs, ins, asm, pattern, itin>, PD, Requires<[HasMMX]>;
    940 class MMXIi8<bits<8> o, Format F, dag outs, dag ins, string asm,
    941              list<dag> pattern, InstrItinClass itin = NoItinerary>
    942       : Ii8<o, F, outs, ins, asm, pattern, itin>, PS, Requires<[HasMMX]>;
    943 class MMXID<bits<8> o, Format F, dag outs, dag ins, string asm,
    944             list<dag> pattern, InstrItinClass itin = NoItinerary>
    945       : Ii8<o, F, outs, ins, asm, pattern, itin>, XD, Requires<[HasMMX]>;
    946 class MMXIS<bits<8> o, Format F, dag outs, dag ins, string asm,
    947             list<dag> pattern, InstrItinClass itin = NoItinerary>
    948       : Ii8<o, F, outs, ins, asm, pattern, itin>, XS, Requires<[HasMMX]>;
    949