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286 lines
11 KiB
TableGen
286 lines
11 KiB
TableGen
//===- X86InstrFormats.td - X86 Instruction Formats --------*- tablegen -*-===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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//===----------------------------------------------------------------------===//
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// X86 Instruction Format Definitions.
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//
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// Format specifies the encoding used by the instruction. This is part of the
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// ad-hoc solution used to emit machine instruction encodings by our machine
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// code emitter.
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class Format<bits<6> val> {
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bits<6> Value = val;
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}
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def Pseudo : Format<0>; def RawFrm : Format<1>;
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def AddRegFrm : Format<2>; def MRMDestReg : Format<3>;
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def MRMDestMem : Format<4>; def MRMSrcReg : Format<5>;
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def MRMSrcMem : Format<6>;
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def MRM0r : Format<16>; def MRM1r : Format<17>; def MRM2r : Format<18>;
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def MRM3r : Format<19>; def MRM4r : Format<20>; def MRM5r : Format<21>;
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def MRM6r : Format<22>; def MRM7r : Format<23>;
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def MRM0m : Format<24>; def MRM1m : Format<25>; def MRM2m : Format<26>;
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def MRM3m : Format<27>; def MRM4m : Format<28>; def MRM5m : Format<29>;
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def MRM6m : Format<30>; def MRM7m : Format<31>;
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def MRMInitReg : Format<32>;
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// ImmType - This specifies the immediate type used by an instruction. This is
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// part of the ad-hoc solution used to emit machine instruction encodings by our
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// machine code emitter.
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class ImmType<bits<3> val> {
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bits<3> Value = val;
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}
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def NoImm : ImmType<0>;
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def Imm8 : ImmType<1>;
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def Imm16 : ImmType<2>;
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def Imm32 : ImmType<3>;
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def Imm64 : ImmType<4>;
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// FPFormat - This specifies what form this FP instruction has. This is used by
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// the Floating-Point stackifier pass.
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class FPFormat<bits<3> val> {
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bits<3> Value = val;
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}
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def NotFP : FPFormat<0>;
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def ZeroArgFP : FPFormat<1>;
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def OneArgFP : FPFormat<2>;
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def OneArgFPRW : FPFormat<3>;
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def TwoArgFP : FPFormat<4>;
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def CompareFP : FPFormat<5>;
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def CondMovFP : FPFormat<6>;
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def SpecialFP : FPFormat<7>;
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// Prefix byte classes which are used to indicate to the ad-hoc machine code
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// emitter that various prefix bytes are required.
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class OpSize { bit hasOpSizePrefix = 1; }
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class AdSize { bit hasAdSizePrefix = 1; }
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class REX_W { bit hasREX_WPrefix = 1; }
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class LOCK { bit hasLockPrefix = 1; }
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class SegFS { bits<2> SegOvrBits = 1; }
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class SegGS { bits<2> SegOvrBits = 2; }
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class TB { bits<4> Prefix = 1; }
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class REP { bits<4> Prefix = 2; }
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class D8 { bits<4> Prefix = 3; }
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class D9 { bits<4> Prefix = 4; }
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class DA { bits<4> Prefix = 5; }
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class DB { bits<4> Prefix = 6; }
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class DC { bits<4> Prefix = 7; }
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class DD { bits<4> Prefix = 8; }
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class DE { bits<4> Prefix = 9; }
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class DF { bits<4> Prefix = 10; }
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class XD { bits<4> Prefix = 11; }
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class XS { bits<4> Prefix = 12; }
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class T8 { bits<4> Prefix = 13; }
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class TA { bits<4> Prefix = 14; }
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class X86Inst<bits<8> opcod, Format f, ImmType i, dag outs, dag ins,
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string AsmStr>
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: Instruction {
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let Namespace = "X86";
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bits<8> Opcode = opcod;
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Format Form = f;
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bits<6> FormBits = Form.Value;
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ImmType ImmT = i;
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bits<3> ImmTypeBits = ImmT.Value;
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dag OutOperandList = outs;
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dag InOperandList = ins;
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string AsmString = AsmStr;
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//
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// Attributes specific to X86 instructions...
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//
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bit hasOpSizePrefix = 0; // Does this inst have a 0x66 prefix?
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bit hasAdSizePrefix = 0; // Does this inst have a 0x67 prefix?
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bits<4> Prefix = 0; // Which prefix byte does this inst have?
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bit hasREX_WPrefix = 0; // Does this inst requires the REX.W prefix?
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FPFormat FPForm; // What flavor of FP instruction is this?
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bits<3> FPFormBits = 0;
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bit hasLockPrefix = 0; // Does this inst have a 0xF0 prefix?
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bits<2> SegOvrBits = 0; // Segment override prefix.
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}
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class I<bits<8> o, Format f, dag outs, dag ins, string asm, list<dag> pattern>
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: X86Inst<o, f, NoImm, outs, ins, asm> {
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let Pattern = pattern;
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let CodeSize = 3;
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}
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class Ii8 <bits<8> o, Format f, dag outs, dag ins, string asm, list<dag> pattern>
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: X86Inst<o, f, Imm8 , outs, ins, asm> {
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let Pattern = pattern;
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let CodeSize = 3;
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}
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class Ii16<bits<8> o, Format f, dag outs, dag ins, string asm, list<dag> pattern>
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: X86Inst<o, f, Imm16, outs, ins, asm> {
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let Pattern = pattern;
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let CodeSize = 3;
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}
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class Ii32<bits<8> o, Format f, dag outs, dag ins, string asm, list<dag> pattern>
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: X86Inst<o, f, Imm32, outs, ins, asm> {
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let Pattern = pattern;
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let CodeSize = 3;
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}
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// FPStack Instruction Templates:
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// FPI - Floating Point Instruction template.
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class FPI<bits<8> o, Format F, dag outs, dag ins, string asm>
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: I<o, F, outs, ins, asm, []> {}
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// FpI_ - Floating Point Psuedo Instruction template. Not Predicated.
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class FpI_<dag outs, dag ins, FPFormat fp, list<dag> pattern>
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: X86Inst<0, Pseudo, NoImm, outs, ins, ""> {
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let FPForm = fp; let FPFormBits = FPForm.Value;
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let Pattern = pattern;
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}
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// SSE1 Instruction Templates:
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//
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// SSI - SSE1 instructions with XS prefix.
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// PSI - SSE1 instructions with TB prefix.
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// PSIi8 - SSE1 instructions with ImmT == Imm8 and TB prefix.
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class SSI<bits<8> o, Format F, dag outs, dag ins, string asm, list<dag> pattern>
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: I<o, F, outs, ins, asm, pattern>, XS, Requires<[HasSSE1]>;
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class SSIi8<bits<8> o, Format F, dag outs, dag ins, string asm, list<dag> pattern>
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: Ii8<o, F, outs, ins, asm, pattern>, XS, Requires<[HasSSE1]>;
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class PSI<bits<8> o, Format F, dag outs, dag ins, string asm, list<dag> pattern>
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: I<o, F, outs, ins, asm, pattern>, TB, Requires<[HasSSE1]>;
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class PSIi8<bits<8> o, Format F, dag outs, dag ins, string asm,
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list<dag> pattern>
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: Ii8<o, F, outs, ins, asm, pattern>, TB, Requires<[HasSSE1]>;
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// SSE2 Instruction Templates:
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//
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// SDI - SSE2 instructions with XD prefix.
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// SDIi8 - SSE2 instructions with ImmT == Imm8 and XD prefix.
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// SSDIi8 - SSE2 instructions with ImmT == Imm8 and XS prefix.
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// PDI - SSE2 instructions with TB and OpSize prefixes.
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// PDIi8 - SSE2 instructions with ImmT == Imm8 and TB and OpSize prefixes.
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class SDI<bits<8> o, Format F, dag outs, dag ins, string asm, list<dag> pattern>
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: I<o, F, outs, ins, asm, pattern>, XD, Requires<[HasSSE2]>;
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class SDIi8<bits<8> o, Format F, dag outs, dag ins, string asm,
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list<dag> pattern>
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: Ii8<o, F, outs, ins, asm, pattern>, XD, Requires<[HasSSE2]>;
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class SSDIi8<bits<8> o, Format F, dag outs, dag ins, string asm,
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list<dag> pattern>
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: Ii8<o, F, outs, ins, asm, pattern>, XS, Requires<[HasSSE2]>;
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class PDI<bits<8> o, Format F, dag outs, dag ins, string asm, list<dag> pattern>
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: I<o, F, outs, ins, asm, pattern>, TB, OpSize, Requires<[HasSSE2]>;
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class PDIi8<bits<8> o, Format F, dag outs, dag ins, string asm,
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list<dag> pattern>
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: Ii8<o, F, outs, ins, asm, pattern>, TB, OpSize, Requires<[HasSSE2]>;
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// SSE3 Instruction Templates:
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//
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// S3I - SSE3 instructions with TB and OpSize prefixes.
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// S3SI - SSE3 instructions with XS prefix.
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// S3DI - SSE3 instructions with XD prefix.
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class S3SI<bits<8> o, Format F, dag outs, dag ins, string asm, list<dag> pattern>
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: I<o, F, outs, ins, asm, pattern>, XS, Requires<[HasSSE3]>;
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class S3DI<bits<8> o, Format F, dag outs, dag ins, string asm, list<dag> pattern>
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: I<o, F, outs, ins, asm, pattern>, XD, Requires<[HasSSE3]>;
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class S3I<bits<8> o, Format F, dag outs, dag ins, string asm, list<dag> pattern>
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: I<o, F, outs, ins, asm, pattern>, TB, OpSize, Requires<[HasSSE3]>;
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// SSSE3 Instruction Templates:
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//
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// SS38I - SSSE3 instructions with T8 prefix.
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// SS3AI - SSSE3 instructions with TA prefix.
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//
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// Note: SSSE3 instructions have 64-bit and 128-bit versions. The 64-bit version
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// uses the MMX registers. We put those instructions here because they better
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// fit into the SSSE3 instruction category rather than the MMX category.
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class SS38I<bits<8> o, Format F, dag outs, dag ins, string asm,
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list<dag> pattern>
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: I<o, F, outs, ins, asm, pattern>, T8, Requires<[HasSSSE3]>;
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class SS3AI<bits<8> o, Format F, dag outs, dag ins, string asm,
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list<dag> pattern>
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: I<o, F, outs, ins, asm, pattern>, TA, Requires<[HasSSSE3]>;
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// SSE4.1 Instruction Templates:
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//
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// SS48I - SSE 4.1 instructions with T8 prefix.
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// SS41AIi8 - SSE 4.1 instructions with TA prefix and ImmT == Imm8.
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//
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class SS48I<bits<8> o, Format F, dag outs, dag ins, string asm,
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list<dag> pattern>
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: I<o, F, outs, ins, asm, pattern>, T8, Requires<[HasSSE41]>;
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class SS4AIi8<bits<8> o, Format F, dag outs, dag ins, string asm,
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list<dag> pattern>
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: Ii8<o, F, outs, ins, asm, pattern>, TA, Requires<[HasSSE41]>;
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// SSE4.2 Instruction Templates:
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//
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// SS428I - SSE 4.2 instructions with T8 prefix.
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class SS428I<bits<8> o, Format F, dag outs, dag ins, string asm,
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list<dag> pattern>
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: I<o, F, outs, ins, asm, pattern>, T8, Requires<[HasSSE42]>;
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// X86-64 Instruction templates...
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//
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class RI<bits<8> o, Format F, dag outs, dag ins, string asm, list<dag> pattern>
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: I<o, F, outs, ins, asm, pattern>, REX_W;
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class RIi8 <bits<8> o, Format F, dag outs, dag ins, string asm,
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list<dag> pattern>
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: Ii8<o, F, outs, ins, asm, pattern>, REX_W;
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class RIi32 <bits<8> o, Format F, dag outs, dag ins, string asm,
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list<dag> pattern>
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: Ii32<o, F, outs, ins, asm, pattern>, REX_W;
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class RIi64<bits<8> o, Format f, dag outs, dag ins, string asm,
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list<dag> pattern>
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: X86Inst<o, f, Imm64, outs, ins, asm>, REX_W {
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let Pattern = pattern;
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let CodeSize = 3;
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}
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class RSSI<bits<8> o, Format F, dag outs, dag ins, string asm,
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list<dag> pattern>
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: SSI<o, F, outs, ins, asm, pattern>, REX_W;
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class RSDI<bits<8> o, Format F, dag outs, dag ins, string asm,
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list<dag> pattern>
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: SDI<o, F, outs, ins, asm, pattern>, REX_W;
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class RPDI<bits<8> o, Format F, dag outs, dag ins, string asm,
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list<dag> pattern>
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: PDI<o, F, outs, ins, asm, pattern>, REX_W;
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// MMX Instruction templates
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//
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// MMXI - MMX instructions with TB prefix.
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// MMXI64 - MMX instructions with TB prefix valid only in 64 bit mode.
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// MMX2I - MMX / SSE2 instructions with TB and OpSize prefixes.
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// MMXIi8 - MMX instructions with ImmT == Imm8 and TB prefix.
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// MMXIi8 - MMX instructions with ImmT == Imm8 and TB prefix.
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// MMXID - MMX instructions with XD prefix.
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// MMXIS - MMX instructions with XS prefix.
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class MMXI<bits<8> o, Format F, dag outs, dag ins, string asm, list<dag> pattern>
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: I<o, F, outs, ins, asm, pattern>, TB, Requires<[HasMMX]>;
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class MMXI64<bits<8> o, Format F, dag outs, dag ins, string asm, list<dag> pattern>
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: I<o, F, outs, ins, asm, pattern>, TB, Requires<[HasMMX,In64BitMode]>;
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class MMXRI<bits<8> o, Format F, dag outs, dag ins, string asm, list<dag> pattern>
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: I<o, F, outs, ins, asm, pattern>, TB, REX_W, Requires<[HasMMX]>;
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class MMX2I<bits<8> o, Format F, dag outs, dag ins, string asm, list<dag> pattern>
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: I<o, F, outs, ins, asm, pattern>, TB, OpSize, Requires<[HasMMX]>;
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class MMXIi8<bits<8> o, Format F, dag outs, dag ins, string asm, list<dag> pattern>
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: Ii8<o, F, outs, ins, asm, pattern>, TB, Requires<[HasMMX]>;
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class MMXID<bits<8> o, Format F, dag outs, dag ins, string asm, list<dag> pattern>
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: Ii8<o, F, outs, ins, asm, pattern>, XD, Requires<[HasMMX]>;
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class MMXIS<bits<8> o, Format F, dag outs, dag ins, string asm, list<dag> pattern>
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: Ii8<o, F, outs, ins, asm, pattern>, XS, Requires<[HasMMX]>;
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