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//===- 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, refered to
// here as the "X86" architecture.
//
//===----------------------------------------------------------------------===//
// Get the target-independent interfaces which we are implementing...
//
include "llvm/Target/Target.td"
//===----------------------------------------------------------------------===//
// X86 Subtarget features.
//===----------------------------------------------------------------------===//
def FeatureMMX : SubtargetFeature<"mmx","X86SSELevel", "MMX",
"Enable MMX instructions">;
def FeatureSSE1 : SubtargetFeature<"sse", "X86SSELevel", "SSE1",
"Enable SSE instructions",
[FeatureMMX]>;
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">;
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">;
def FeatureSlowBTMem : SubtargetFeature<"slow-bt-mem", "IsBTMemSlow", "true",
"Bit testing of memory is slow">;
def FeatureSSE4A : SubtargetFeature<"sse4a", "HasSSE4A", "true",
"Support SSE 4a instructions">;
def FeatureAVX : SubtargetFeature<"avx", "HasAVX", "true",
"Enable AVX 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">;
//===----------------------------------------------------------------------===//
// X86 processors supported.
//===----------------------------------------------------------------------===//
class Proc<string Name, list<SubtargetFeature> Features>
: Processor<Name, NoItineraries, 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", []>;
def : Proc<"pentium2", [FeatureMMX]>;
def : Proc<"pentium3", [FeatureSSE1]>;
def : Proc<"pentium-m", [FeatureSSE2, FeatureSlowBTMem]>;
def : Proc<"pentium4", [FeatureSSE2]>;
def : Proc<"x86-64", [FeatureSSE2, Feature64Bit, FeatureSlowBTMem]>;
def : Proc<"yonah", [FeatureSSE3, FeatureSlowBTMem]>;
def : Proc<"prescott", [FeatureSSE3, FeatureSlowBTMem]>;
def : Proc<"nocona", [FeatureSSE3, Feature64Bit, FeatureSlowBTMem]>;
def : Proc<"core2", [FeatureSSSE3, Feature64Bit, FeatureSlowBTMem]>;
def : Proc<"penryn", [FeatureSSE41, Feature64Bit, FeatureSlowBTMem]>;
def : Proc<"atom", [FeatureSSE3, Feature64Bit, FeatureSlowBTMem]>;
def : Proc<"corei7", [FeatureSSE42, Feature64Bit, FeatureSlowBTMem]>;
def : Proc<"nehalem", [FeatureSSE42, Feature64Bit, FeatureSlowBTMem]>;
// Sandy Bridge does not have FMA
def : Proc<"sandybridge", [FeatureSSE42, FeatureAVX, Feature64Bit]>;
def : Proc<"k6", [FeatureMMX]>;
def : Proc<"k6-2", [FeatureMMX, Feature3DNow]>;
def : Proc<"k6-3", [FeatureMMX, Feature3DNow]>;
def : Proc<"athlon", [FeatureMMX, Feature3DNowA, FeatureSlowBTMem]>;
def : Proc<"athlon-tbird", [FeatureMMX, 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, Feature64Bit,
FeatureSlowBTMem]>;
def : Proc<"opteron-sse3", [FeatureSSE3, Feature3DNowA, Feature64Bit,
FeatureSlowBTMem]>;
def : Proc<"athlon64-sse3", [FeatureSSE3, Feature3DNowA, Feature64Bit,
FeatureSlowBTMem]>;
def : Proc<"amdfam10", [FeatureSSE3, FeatureSSE4A,
Feature3DNowA, Feature64Bit, FeatureSlowBTMem]>;
def : Proc<"barcelona", [FeatureSSE3, FeatureSSE4A,
Feature3DNowA, Feature64Bit, FeatureSlowBTMem]>;
def : Proc<"istanbul", [Feature3DNowA, Feature64Bit, FeatureSSE4A,
Feature3DNowA]>;
def : Proc<"shanghai", [Feature3DNowA, Feature64Bit, FeatureSSE4A,
Feature3DNowA]>;
def : Proc<"winchip-c6", [FeatureMMX]>;
def : Proc<"winchip2", [FeatureMMX, Feature3DNow]>;
def : Proc<"c3", [FeatureMMX, Feature3DNow]>;
def : Proc<"c3-2", [FeatureSSE1]>;
//===----------------------------------------------------------------------===//
// Register File Description
//===----------------------------------------------------------------------===//
include "X86RegisterInfo.td"
//===----------------------------------------------------------------------===//
// Instruction Descriptions
//===----------------------------------------------------------------------===//
include "X86InstrInfo.td"
def X86InstrInfo : InstrInfo {
// Define how we want to layout our TargetSpecific information field... This
// should be kept up-to-date with the fields in the X86InstrInfo.h file.
let TSFlagsFields = ["FormBits",
"hasOpSizePrefix",
"hasAdSizePrefix",
"Prefix",
"hasREX_WPrefix",
"ImmTypeBits",
"FPFormBits",
"hasLockPrefix",
"SegOvrBits",
"Opcode"];
let TSFlagsShifts = [0,
6,
7,
8,
12,
13,
16,
19,
20,
24];
}
//===----------------------------------------------------------------------===//
// Calling Conventions
//===----------------------------------------------------------------------===//
include "X86CallingConv.td"
//===----------------------------------------------------------------------===//
// Assembly Printers
//===----------------------------------------------------------------------===//
// Currently the X86 assembly parser only supports ATT syntax.
def ATTAsmParser : AsmParser {
string AsmParserClassName = "ATTAsmParser";
int Variant = 0;
// Discard comments in assembly strings.
string CommentDelimiter = "#";
// Recognize hard coded registers.
string RegisterPrefix = "%";
}
// 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 = "ATTAsmPrinter";
int Variant = 0;
}
def IntelAsmWriter : AsmWriter {
string AsmWriterClassName = "IntelAsmPrinter";
int Variant = 1;
}
def X86 : Target {
// Information about the instructions...
let InstructionSet = X86InstrInfo;
let AssemblyParsers = [ATTAsmParser];
let AssemblyWriters = [ATTAsmWriter, IntelAsmWriter];
}