//===-- X86.td - Target definition file for the Intel X86 --*- tablegen -*-===// // // The LLVM Compiler Infrastructure // // This file is distributed under the University of Illinois Open Source // License. See LICENSE.TXT for details. // //===----------------------------------------------------------------------===// // // This is a target description file for the Intel i386 architecture, referred // to here as the "X86" architecture. // //===----------------------------------------------------------------------===// // Get the target-independent interfaces which we are implementing... // include "llvm/Target/Target.td" //===----------------------------------------------------------------------===// // X86 Subtarget state // def Mode64Bit : SubtargetFeature<"64bit-mode", "In64BitMode", "true", "64-bit mode (x86_64)">; //===----------------------------------------------------------------------===// // X86 Subtarget features //===----------------------------------------------------------------------===// def FeatureCMOV : SubtargetFeature<"cmov","HasCMov", "true", "Enable conditional move instructions">; def FeaturePOPCNT : SubtargetFeature<"popcnt", "HasPOPCNT", "true", "Support POPCNT instruction">; def FeatureMMX : SubtargetFeature<"mmx","X86SSELevel", "MMX", "Enable MMX instructions">; def FeatureSSE1 : SubtargetFeature<"sse", "X86SSELevel", "SSE1", "Enable SSE instructions", // SSE codegen depends on cmovs, and all // SSE1+ processors support them. [FeatureMMX, FeatureCMOV]>; def FeatureSSE2 : SubtargetFeature<"sse2", "X86SSELevel", "SSE2", "Enable SSE2 instructions", [FeatureSSE1]>; def FeatureSSE3 : SubtargetFeature<"sse3", "X86SSELevel", "SSE3", "Enable SSE3 instructions", [FeatureSSE2]>; def FeatureSSSE3 : SubtargetFeature<"ssse3", "X86SSELevel", "SSSE3", "Enable SSSE3 instructions", [FeatureSSE3]>; def FeatureSSE41 : SubtargetFeature<"sse41", "X86SSELevel", "SSE41", "Enable SSE 4.1 instructions", [FeatureSSSE3]>; def FeatureSSE42 : SubtargetFeature<"sse42", "X86SSELevel", "SSE42", "Enable SSE 4.2 instructions", [FeatureSSE41]>; def Feature3DNow : SubtargetFeature<"3dnow", "X863DNowLevel", "ThreeDNow", "Enable 3DNow! instructions", [FeatureMMX]>; def Feature3DNowA : SubtargetFeature<"3dnowa", "X863DNowLevel", "ThreeDNowA", "Enable 3DNow! Athlon instructions", [Feature3DNow]>; // All x86-64 hardware has SSE2, but we don't mark SSE2 as an implied // feature, because SSE2 can be disabled (e.g. for compiling OS kernels) // without disabling 64-bit mode. def Feature64Bit : SubtargetFeature<"64bit", "HasX86_64", "true", "Support 64-bit instructions", [FeatureCMOV]>; def FeatureCMPXCHG16B : SubtargetFeature<"cmpxchg16b", "HasCmpxchg16b", "true", "64-bit with cmpxchg16b", [Feature64Bit]>; def FeatureSlowBTMem : SubtargetFeature<"slow-bt-mem", "IsBTMemSlow", "true", "Bit testing of memory is slow">; def FeatureFastUAMem : SubtargetFeature<"fast-unaligned-mem", "IsUAMemFast", "true", "Fast unaligned memory access">; def FeatureSSE4A : SubtargetFeature<"sse4a", "HasSSE4A", "true", "Support SSE 4a instructions", [FeatureSSE3]>; def FeatureAVX : SubtargetFeature<"avx", "X86SSELevel", "AVX", "Enable AVX instructions", [FeatureSSE42]>; def FeatureAVX2 : SubtargetFeature<"avx2", "X86SSELevel", "AVX2", "Enable AVX2 instructions", [FeatureAVX]>; def FeaturePCLMUL : SubtargetFeature<"pclmul", "HasPCLMUL", "true", "Enable packed carry-less multiplication instructions", [FeatureSSE2]>; def FeatureFMA : SubtargetFeature<"fma", "HasFMA", "true", "Enable three-operand fused multiple-add", [FeatureAVX]>; def FeatureFMA4 : SubtargetFeature<"fma4", "HasFMA4", "true", "Enable four-operand fused multiple-add", [FeatureAVX, FeatureSSE4A]>; def FeatureXOP : SubtargetFeature<"xop", "HasXOP", "true", "Enable XOP instructions", [FeatureFMA4]>; def FeatureVectorUAMem : SubtargetFeature<"vector-unaligned-mem", "HasVectorUAMem", "true", "Allow unaligned memory operands on vector/SIMD instructions">; def FeatureAES : SubtargetFeature<"aes", "HasAES", "true", "Enable AES instructions", [FeatureSSE2]>; def FeatureMOVBE : SubtargetFeature<"movbe", "HasMOVBE", "true", "Support MOVBE instruction">; def FeatureRDRAND : SubtargetFeature<"rdrand", "HasRDRAND", "true", "Support RDRAND instruction">; def FeatureF16C : SubtargetFeature<"f16c", "HasF16C", "true", "Support 16-bit floating point conversion instructions">; def FeatureFSGSBase : SubtargetFeature<"fsgsbase", "HasFSGSBase", "true", "Support FS/GS Base instructions">; def FeatureLZCNT : SubtargetFeature<"lzcnt", "HasLZCNT", "true", "Support LZCNT instruction">; def FeatureBMI : SubtargetFeature<"bmi", "HasBMI", "true", "Support BMI instructions">; def FeatureBMI2 : SubtargetFeature<"bmi2", "HasBMI2", "true", "Support BMI2 instructions">; def FeatureLeaForSP : SubtargetFeature<"lea-sp", "UseLeaForSP", "true", "Use LEA for adjusting the stack pointer">; def FeatureSlowDivide : SubtargetFeature<"idiv-to-divb", "HasSlowDivide", "true", "Use small divide for positive values less than 256">; //===----------------------------------------------------------------------===// // X86 processors supported. //===----------------------------------------------------------------------===// include "X86Schedule.td" def ProcIntelAtom : SubtargetFeature<"atom", "X86ProcFamily", "IntelAtom", "Intel Atom processors">; class Proc Features> : ProcessorModel; class AtomProc Features> : ProcessorModel; def : Proc<"generic", []>; def : Proc<"i386", []>; def : Proc<"i486", []>; def : Proc<"i586", []>; def : Proc<"pentium", []>; def : Proc<"pentium-mmx", [FeatureMMX]>; def : Proc<"i686", []>; def : Proc<"pentiumpro", [FeatureCMOV]>; def : Proc<"pentium2", [FeatureMMX, FeatureCMOV]>; def : Proc<"pentium3", [FeatureSSE1]>; def : Proc<"pentium3m", [FeatureSSE1, FeatureSlowBTMem]>; def : Proc<"pentium-m", [FeatureSSE2, FeatureSlowBTMem]>; def : Proc<"pentium4", [FeatureSSE2]>; def : Proc<"pentium4m", [FeatureSSE2, FeatureSlowBTMem]>; def : Proc<"x86-64", [FeatureSSE2, Feature64Bit, FeatureSlowBTMem]>; def : Proc<"yonah", [FeatureSSE3, FeatureSlowBTMem]>; def : Proc<"prescott", [FeatureSSE3, FeatureSlowBTMem]>; def : Proc<"nocona", [FeatureSSE3, FeatureCMPXCHG16B, FeatureSlowBTMem]>; def : Proc<"core2", [FeatureSSSE3, FeatureCMPXCHG16B, FeatureSlowBTMem]>; def : Proc<"penryn", [FeatureSSE41, FeatureCMPXCHG16B, FeatureSlowBTMem]>; def : AtomProc<"atom", [ProcIntelAtom, FeatureSSSE3, FeatureCMPXCHG16B, FeatureMOVBE, FeatureSlowBTMem, FeatureLeaForSP, FeatureSlowDivide]>; // "Arrandale" along with corei3 and corei5 def : Proc<"corei7", [FeatureSSE42, FeatureCMPXCHG16B, FeatureSlowBTMem, FeatureFastUAMem, FeaturePOPCNT, FeatureAES]>; def : Proc<"nehalem", [FeatureSSE42, FeatureCMPXCHG16B, FeatureSlowBTMem, FeatureFastUAMem, FeaturePOPCNT]>; // Westmere is a similar machine to nehalem with some additional features. // Westmere is the corei3/i5/i7 path from nehalem to sandybridge def : Proc<"westmere", [FeatureSSE42, FeatureCMPXCHG16B, FeatureSlowBTMem, FeatureFastUAMem, FeaturePOPCNT, FeatureAES, FeaturePCLMUL]>; // Sandy Bridge // SSE is not listed here since llvm treats AVX as a reimplementation of SSE, // rather than a superset. def : Proc<"corei7-avx", [FeatureAVX, FeatureCMPXCHG16B, FeaturePOPCNT, FeatureAES, FeaturePCLMUL]>; // Ivy Bridge def : Proc<"core-avx-i", [FeatureAVX, FeatureCMPXCHG16B, FeaturePOPCNT, FeatureAES, FeaturePCLMUL, FeatureRDRAND, FeatureF16C, FeatureFSGSBase]>; // Haswell def : Proc<"core-avx2", [FeatureAVX2, FeatureCMPXCHG16B, FeaturePOPCNT, FeatureAES, FeaturePCLMUL, FeatureRDRAND, FeatureF16C, FeatureFSGSBase, FeatureMOVBE, FeatureLZCNT, FeatureBMI, FeatureBMI2, FeatureFMA]>; def : Proc<"k6", [FeatureMMX]>; def : Proc<"k6-2", [Feature3DNow]>; def : Proc<"k6-3", [Feature3DNow]>; def : Proc<"athlon", [Feature3DNowA, FeatureSlowBTMem]>; def : Proc<"athlon-tbird", [Feature3DNowA, FeatureSlowBTMem]>; def : Proc<"athlon-4", [FeatureSSE1, Feature3DNowA, FeatureSlowBTMem]>; def : Proc<"athlon-xp", [FeatureSSE1, Feature3DNowA, FeatureSlowBTMem]>; def : Proc<"athlon-mp", [FeatureSSE1, Feature3DNowA, FeatureSlowBTMem]>; def : Proc<"k8", [FeatureSSE2, Feature3DNowA, Feature64Bit, FeatureSlowBTMem]>; def : Proc<"opteron", [FeatureSSE2, Feature3DNowA, Feature64Bit, FeatureSlowBTMem]>; def : Proc<"athlon64", [FeatureSSE2, Feature3DNowA, Feature64Bit, FeatureSlowBTMem]>; def : Proc<"athlon-fx", [FeatureSSE2, Feature3DNowA, Feature64Bit, FeatureSlowBTMem]>; def : Proc<"k8-sse3", [FeatureSSE3, Feature3DNowA, FeatureCMPXCHG16B, FeatureSlowBTMem]>; def : Proc<"opteron-sse3", [FeatureSSE3, Feature3DNowA, FeatureCMPXCHG16B, FeatureSlowBTMem]>; def : Proc<"athlon64-sse3", [FeatureSSE3, Feature3DNowA, FeatureCMPXCHG16B, FeatureSlowBTMem]>; def : Proc<"amdfam10", [FeatureSSE4A, Feature3DNowA, FeatureCMPXCHG16B, FeatureLZCNT, FeaturePOPCNT, FeatureSlowBTMem]>; // Bobcat def : Proc<"btver1", [FeatureSSSE3, FeatureSSE4A, FeatureCMPXCHG16B, FeatureLZCNT, FeaturePOPCNT]>; // Bulldozer def : Proc<"bdver1", [FeatureXOP, FeatureFMA4, FeatureCMPXCHG16B, FeatureAES, FeaturePCLMUL, FeatureLZCNT, FeaturePOPCNT]>; // Enhanced Bulldozer def : Proc<"bdver2", [FeatureXOP, FeatureFMA4, FeatureCMPXCHG16B, FeatureAES, FeaturePCLMUL, FeatureF16C, FeatureLZCNT, FeaturePOPCNT, FeatureBMI, FeatureFMA]>; def : Proc<"geode", [Feature3DNowA]>; def : Proc<"winchip-c6", [FeatureMMX]>; def : Proc<"winchip2", [Feature3DNow]>; def : Proc<"c3", [Feature3DNow]>; def : Proc<"c3-2", [FeatureSSE1]>; //===----------------------------------------------------------------------===// // Register File Description //===----------------------------------------------------------------------===// include "X86RegisterInfo.td" //===----------------------------------------------------------------------===// // Instruction Descriptions //===----------------------------------------------------------------------===// include "X86InstrInfo.td" def X86InstrInfo : InstrInfo; //===----------------------------------------------------------------------===// // Calling Conventions //===----------------------------------------------------------------------===// include "X86CallingConv.td" //===----------------------------------------------------------------------===// // Assembly Parser //===----------------------------------------------------------------------===// def ATTAsmParser : AsmParser { string AsmParserClassName = "AsmParser"; } def ATTAsmParserVariant : AsmParserVariant { int Variant = 0; // Discard comments in assembly strings. string CommentDelimiter = "#"; // Recognize hard coded registers. string RegisterPrefix = "%"; } def IntelAsmParserVariant : AsmParserVariant { int Variant = 1; // Discard comments in assembly strings. string CommentDelimiter = ";"; // Recognize hard coded registers. string RegisterPrefix = ""; } //===----------------------------------------------------------------------===// // Assembly Printers //===----------------------------------------------------------------------===// // The X86 target supports two different syntaxes for emitting machine code. // This is controlled by the -x86-asm-syntax={att|intel} def ATTAsmWriter : AsmWriter { string AsmWriterClassName = "ATTInstPrinter"; int Variant = 0; bit isMCAsmWriter = 1; } def IntelAsmWriter : AsmWriter { string AsmWriterClassName = "IntelInstPrinter"; int Variant = 1; bit isMCAsmWriter = 1; } def X86 : Target { // Information about the instructions... let InstructionSet = X86InstrInfo; let AssemblyParsers = [ATTAsmParser]; let AssemblyParserVariants = [ATTAsmParserVariant, IntelAsmParserVariant]; let AssemblyWriters = [ATTAsmWriter, IntelAsmWriter]; }