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//===-- - 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/"
// 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",
def FeatureSSE3 : SubtargetFeature<"sse3", "X86SSELevel", "SSE3",
"Enable SSE3 instructions",
def FeatureSSSE3 : SubtargetFeature<"ssse3", "X86SSELevel", "SSSE3",
"Enable SSSE3 instructions",
def FeatureSSE41 : SubtargetFeature<"sse41", "X86SSELevel", "SSE41",
"Enable SSE 4.1 instructions",
def FeatureSSE42 : SubtargetFeature<"sse42", "X86SSELevel", "SSE42",
"Enable SSE 4.2 instructions",
def Feature3DNow : SubtargetFeature<"3dnow", "X863DNowLevel", "ThreeDNow",
"Enable 3DNow! instructions",
def Feature3DNowA : SubtargetFeature<"3dnowa", "X863DNowLevel", "ThreeDNowA",
"Enable 3DNow! Athlon instructions",
// 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",
def FeatureCMPXCHG16B : SubtargetFeature<"cmpxchg16b", "HasCmpxchg16b", "true",
"64-bit with cmpxchg16b",
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",
def FeatureAVX : SubtargetFeature<"avx", "X86SSELevel", "AVX",
"Enable AVX instructions",
def FeatureAVX2 : SubtargetFeature<"avx2", "X86SSELevel", "AVX2",
"Enable AVX2 instructions",
def FeatureCLMUL : SubtargetFeature<"clmul", "HasCLMUL", "true",
"Enable carry-less multiplication instructions">;
def FeatureFMA3 : SubtargetFeature<"fma3", "HasFMA3", "true",
"Enable three-operand fused multiple-add",
def FeatureFMA4 : SubtargetFeature<"fma4", "HasFMA4", "true",
"Enable four-operand fused multiple-add",
def FeatureXOP : SubtargetFeature<"xop", "HasXOP", "true",
"Enable XOP instructions">;
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">;
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">;
// X86 processors supported.
include ""
def ProcIntelAtom : SubtargetFeature<"atom", "X86ProcFamily", "IntelAtom",
"Intel Atom processors">;
class Proc<string Name, list<SubtargetFeature> Features>
: Processor<Name, GenericItineraries, Features>;
class AtomProc<string Name, list<SubtargetFeature> Features>
: Processor<Name, AtomItineraries, Features>;
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,
def : Proc<"core2", [FeatureSSSE3, FeatureCMPXCHG16B,
def : Proc<"penryn", [FeatureSSE41, FeatureCMPXCHG16B,
def : AtomProc<"atom", [ProcIntelAtom, FeatureSSE3, FeatureCMPXCHG16B,
FeatureMOVBE, FeatureSlowBTMem, FeatureLeaForSP]>;
// "Arrandale" along with corei3 and corei5
def : Proc<"corei7", [FeatureSSE42, FeatureCMPXCHG16B,
FeatureSlowBTMem, FeatureFastUAMem,
FeaturePOPCNT, FeatureAES]>;
def : Proc<"nehalem", [FeatureSSE42, FeatureCMPXCHG16B,
FeatureSlowBTMem, FeatureFastUAMem,
// 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, FeatureCLMUL]>;
// Sandy Bridge
// SSE is not listed here since llvm treats AVX as a reimplementation of SSE,
// rather than a superset.
// FIXME: Disabling AVX for now since it's not ready.
def : Proc<"corei7-avx", [FeatureSSE42, FeatureCMPXCHG16B, FeaturePOPCNT,
FeatureAES, FeatureCLMUL]>;
// Ivy Bridge
def : Proc<"core-avx-i", [FeatureSSE42, FeatureCMPXCHG16B, FeaturePOPCNT,
FeatureAES, FeatureCLMUL,
FeatureRDRAND, FeatureF16C, FeatureFSGSBase]>;
// Haswell
// FIXME: Disabling AVX/AVX2/FMA3 for now since it's not ready.
def : Proc<"core-avx2", [FeatureSSE42, FeatureCMPXCHG16B, FeaturePOPCNT,
FeatureAES, FeatureCLMUL, FeatureRDRAND,
FeatureF16C, FeatureFSGSBase,
FeatureMOVBE, FeatureLZCNT, FeatureBMI,
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,
def : Proc<"opteron", [FeatureSSE2, Feature3DNowA, Feature64Bit,
def : Proc<"athlon64", [FeatureSSE2, Feature3DNowA, Feature64Bit,
def : Proc<"athlon-fx", [FeatureSSE2, Feature3DNowA, Feature64Bit,
def : Proc<"k8-sse3", [FeatureSSE3, Feature3DNowA, FeatureCMPXCHG16B,
def : Proc<"opteron-sse3", [FeatureSSE3, Feature3DNowA, FeatureCMPXCHG16B,
def : Proc<"athlon64-sse3", [FeatureSSE3, Feature3DNowA, FeatureCMPXCHG16B,
def : Proc<"amdfam10", [FeatureSSE3, FeatureSSE4A,
Feature3DNowA, FeatureCMPXCHG16B, FeatureLZCNT,
FeaturePOPCNT, FeatureSlowBTMem]>;
// Bobcat
def : Proc<"btver1", [FeatureSSSE3, FeatureSSE4A, FeatureCMPXCHG16B,
FeatureLZCNT, FeaturePOPCNT]>;
// FIXME: Disabling AVX/FMA4 for now since it's not ready.
// Bulldozer
def : Proc<"bdver1", [FeatureSSE42, FeatureSSE4A, FeatureCMPXCHG16B,
FeatureAES, FeatureCLMUL,
FeatureXOP, FeatureLZCNT, FeaturePOPCNT]>;
// Enhanced Bulldozer
def : Proc<"bdver2", [FeatureSSE42, FeatureSSE4A, FeatureCMPXCHG16B,
FeatureAES, FeatureCLMUL,
FeatureXOP, FeatureF16C, FeatureLZCNT,
FeaturePOPCNT, FeatureBMI]>;
def : Proc<"winchip-c6", [FeatureMMX]>;
def : Proc<"winchip2", [Feature3DNow]>;
def : Proc<"c3", [Feature3DNow]>;
def : Proc<"c3-2", [FeatureSSE1]>;
// Register File Description
include ""
// Instruction Descriptions
include ""
def X86InstrInfo : InstrInfo;
// Calling Conventions
include ""
// 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];