1 //===- X86.td - Target definition file for the Intel X86 arch ---*- C++ -*-===//
3 // The LLVM Compiler Infrastructure
5 // This file was developed by the LLVM research group and is distributed under
6 // the University of Illinois Open Source License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
10 // This is a target description file for the Intel i386 architecture, refered to
11 // here as the "X86" architecture.
13 //===----------------------------------------------------------------------===//
15 // Get the target-independent interfaces which we are implementing...
17 include "../Target.td"
19 //===----------------------------------------------------------------------===//
20 // X86 Subtarget features.
23 def Feature64Bit : SubtargetFeature<"64bit", "Is64Bit", "true",
24 "Enable 64-bit instructions">;
25 def FeatureMMX : SubtargetFeature<"mmx","X86SSELevel", "MMX",
26 "Enable MMX instructions">;
27 def FeatureSSE1 : SubtargetFeature<"sse", "X86SSELevel", "SSE1",
28 "Enable SSE instructions">;
29 def FeatureSSE2 : SubtargetFeature<"sse2", "X86SSELevel", "SSE2",
30 "Enable SSE2 instructions">;
31 def FeatureSSE3 : SubtargetFeature<"sse3", "X86SSELevel", "SSE3",
32 "Enable SSE3 instructions">;
33 def Feature3DNow : SubtargetFeature<"3dnow", "X863DNowLevel", "ThreeDNow",
34 "Enable 3DNow! instructions">;
35 def Feature3DNowA : SubtargetFeature<"3dnowa", "X863DNowLevel", "ThreeDNowA",
36 "Enable 3DNow! Athlon instructions">;
38 //===----------------------------------------------------------------------===//
39 // X86 processors supported.
40 //===----------------------------------------------------------------------===//
42 class Proc<string Name, list<SubtargetFeature> Features>
43 : Processor<Name, NoItineraries, Features>;
45 def : Proc<"generic", []>;
46 def : Proc<"i386", []>;
47 def : Proc<"i486", []>;
48 def : Proc<"pentium", []>;
49 def : Proc<"pentium-mmx", [FeatureMMX]>;
50 def : Proc<"i686", []>;
51 def : Proc<"pentiumpro", []>;
52 def : Proc<"pentium2", [FeatureMMX]>;
53 def : Proc<"pentium3", [FeatureMMX, FeatureSSE1]>;
54 def : Proc<"pentium-m", [FeatureMMX, FeatureSSE1, FeatureSSE2]>;
55 def : Proc<"pentium4", [FeatureMMX, FeatureSSE1, FeatureSSE2]>;
56 def : Proc<"x86-64", [FeatureMMX, FeatureSSE1, FeatureSSE2,
58 def : Proc<"yonah", [FeatureMMX, FeatureSSE1, FeatureSSE2,
60 def : Proc<"prescott", [FeatureMMX, FeatureSSE1, FeatureSSE2,
62 def : Proc<"nocona", [FeatureMMX, FeatureSSE1, FeatureSSE2,
63 FeatureSSE3, Feature64Bit]>;
65 def : Proc<"k6", [FeatureMMX]>;
66 def : Proc<"k6-2", [FeatureMMX, Feature3DNow]>;
67 def : Proc<"k6-3", [FeatureMMX, Feature3DNow]>;
68 def : Proc<"athlon", [FeatureMMX, Feature3DNow, Feature3DNowA]>;
69 def : Proc<"athlon-tbird", [FeatureMMX, Feature3DNow, Feature3DNowA]>;
70 def : Proc<"athlon-4", [FeatureMMX, FeatureSSE1, Feature3DNow,
72 def : Proc<"athlon-xp", [FeatureMMX, FeatureSSE1, Feature3DNow,
74 def : Proc<"athlon-mp", [FeatureMMX, FeatureSSE1, Feature3DNow,
76 def : Proc<"k8", [FeatureMMX, FeatureSSE1, FeatureSSE2,
77 Feature3DNow, Feature3DNowA, Feature64Bit]>;
78 def : Proc<"opteron", [FeatureMMX, FeatureSSE1, FeatureSSE2,
79 Feature3DNow, Feature3DNowA, Feature64Bit]>;
80 def : Proc<"athlon64", [FeatureMMX, FeatureSSE1, FeatureSSE2,
81 Feature3DNow, Feature3DNowA, Feature64Bit]>;
82 def : Proc<"athlon-fx", [FeatureMMX, FeatureSSE1, FeatureSSE2,
83 Feature3DNow, Feature3DNowA, Feature64Bit]>;
85 def : Proc<"winchip-c6", [FeatureMMX]>;
86 def : Proc<"winchip2", [FeatureMMX, Feature3DNow]>;
87 def : Proc<"c3", [FeatureMMX, Feature3DNow]>;
88 def : Proc<"c3-2", [FeatureMMX, FeatureSSE1]>;
90 //===----------------------------------------------------------------------===//
91 // Register File Description
92 //===----------------------------------------------------------------------===//
94 include "X86RegisterInfo.td"
96 //===----------------------------------------------------------------------===//
97 // Instruction Descriptions
98 //===----------------------------------------------------------------------===//
100 include "X86InstrInfo.td"
102 def X86InstrInfo : InstrInfo {
104 // Define how we want to layout our TargetSpecific information field... This
105 // should be kept up-to-date with the fields in the X86InstrInfo.h file.
106 let TSFlagsFields = ["FormBits",
112 let TSFlagsShifts = [0,
120 // The X86 target supports two different syntaxes for emitting machine code.
121 // This is controlled by the -x86-asm-syntax={att|intel}
122 def ATTAsmWriter : AsmWriter {
123 string AsmWriterClassName = "ATTAsmPrinter";
126 def IntelAsmWriter : AsmWriter {
127 string AsmWriterClassName = "IntelAsmPrinter";
133 // Specify the callee saved registers.
134 let CalleeSavedRegisters = [ESI, EDI, EBX, EBP];
136 // Yes, pointers are 32-bits in size.
137 let PointerType = i32;
139 // Information about the instructions...
140 let InstructionSet = X86InstrInfo;
142 let AssemblyWriters = [ATTAsmWriter, IntelAsmWriter];