lib/Target/X86/X86.td

   1 //===- X86.td - Target definition file for the Intel X86 ---*- tablegen -*-===//
   2 //
   3 //                     The LLVM Compiler Infrastructure
   4 //
   5 // This file is distributed under the University of Illinois Open Source
   6 // License. See LICENSE.TXT for details.
   7 //
   8 //===----------------------------------------------------------------------===//
   9 //
  10 // This is a target description file for the Intel i386 architecture, refered to
  11 // here as the "X86" architecture.
  12 //
  13 //===----------------------------------------------------------------------===//
  14
  15 // Get the target-independent interfaces which we are implementing...
  16 //
  17 include "llvm/Target/Target.td"
  18
  19 //===----------------------------------------------------------------------===//
  20 // X86 Subtarget features.
  21 //===----------------------------------------------------------------------===//
  22
  23 def FeatureMMX     : SubtargetFeature<"mmx","X86SSELevel", "MMX",
  24                                       "Enable MMX instructions">;
  25 def FeatureSSE1    : SubtargetFeature<"sse", "X86SSELevel", "SSE1",
  26                                       "Enable SSE instructions",
  27                                       [FeatureMMX]>;
  28 def FeatureSSE2    : SubtargetFeature<"sse2", "X86SSELevel", "SSE2",
  29                                       "Enable SSE2 instructions",
  30                                       [FeatureSSE1]>;
  31 def FeatureSSE3    : SubtargetFeature<"sse3", "X86SSELevel", "SSE3",
  32                                       "Enable SSE3 instructions",
  33                                       [FeatureSSE2]>;
  34 def FeatureSSSE3   : SubtargetFeature<"ssse3", "X86SSELevel", "SSSE3",
  35                                       "Enable SSSE3 instructions",
  36                                       [FeatureSSE3]>;
  37 def FeatureSSE41   : SubtargetFeature<"sse41", "X86SSELevel", "SSE41",
  38                                       "Enable SSE 4.1 instructions",
  39                                       [FeatureSSSE3]>;
  40 def FeatureSSE42   : SubtargetFeature<"sse42", "X86SSELevel", "SSE42",
  41                                       "Enable SSE 4.2 instructions",
  42                                       [FeatureSSE41]>;
  43 def Feature3DNow   : SubtargetFeature<"3dnow", "X863DNowLevel", "ThreeDNow",
  44                                       "Enable 3DNow! instructions">;
  45 def Feature3DNowA  : SubtargetFeature<"3dnowa", "X863DNowLevel", "ThreeDNowA",
  46                                       "Enable 3DNow! Athlon instructions",
  47                                       [Feature3DNow]>;
  48 def Feature64Bit   : SubtargetFeature<"64bit", "HasX86_64", "true",
  49                                       "Support 64-bit instructions",
  50                                       [FeatureSSE2]>;
  51 def FeatureSlowBTMem : SubtargetFeature<"slow-bt-mem", "IsBTMemSlow", "true",
  52                                        "Bit testing of memory is slow">;
  53
  54 //===----------------------------------------------------------------------===//
  55 // X86 processors supported.
  56 //===----------------------------------------------------------------------===//
  57
  58 class Proc<string Name, list<SubtargetFeature> Features>
  59  : Processor<Name, NoItineraries, Features>;
  60
  61 def : Proc<"generic",         []>;
  62 def : Proc<"i386",            []>;
  63 def : Proc<"i486",            []>;
  64 def : Proc<"i586",            []>;
  65 def : Proc<"pentium",         []>;
  66 def : Proc<"pentium-mmx",     [FeatureMMX]>;
  67 def : Proc<"i686",            []>;
  68 def : Proc<"pentiumpro",      []>;
  69 def : Proc<"pentium2",        [FeatureMMX]>;
  70 def : Proc<"pentium3",        [FeatureSSE1]>;
  71 def : Proc<"pentium-m",       [FeatureSSE2, FeatureSlowBTMem]>;
  72 def : Proc<"pentium4",        [FeatureSSE2]>;
  73 def : Proc<"x86-64",          [Feature64Bit, FeatureSlowBTMem]>;
  74 def : Proc<"yonah",           [FeatureSSE3, FeatureSlowBTMem]>;
  75 def : Proc<"prescott",        [FeatureSSE3, FeatureSlowBTMem]>;
  76 def : Proc<"nocona",          [FeatureSSE3,   Feature64Bit, FeatureSlowBTMem]>;
  77 def : Proc<"core2",           [FeatureSSSE3,  Feature64Bit, FeatureSlowBTMem]>;
  78 def : Proc<"penryn",          [FeatureSSE41,  Feature64Bit, FeatureSlowBTMem]>;
  79 def : Proc<"atom",            [FeatureSSE3,   Feature64Bit, FeatureSlowBTMem]>;
  80 def : Proc<"corei7",          [FeatureSSE42,  Feature64Bit, FeatureSlowBTMem]>;
  81
  82 def : Proc<"k6",              [FeatureMMX]>;
  83 def : Proc<"k6-2",            [FeatureMMX,    Feature3DNow]>;
  84 def : Proc<"k6-3",            [FeatureMMX,    Feature3DNow]>;
  85 def : Proc<"athlon",          [FeatureMMX,    Feature3DNowA, FeatureSlowBTMem]>;
  86 def : Proc<"athlon-tbird",    [FeatureMMX,    Feature3DNowA, FeatureSlowBTMem]>;
  87 def : Proc<"athlon-4",        [FeatureSSE1,   Feature3DNowA, FeatureSlowBTMem]>;
  88 def : Proc<"athlon-xp",       [FeatureSSE1,   Feature3DNowA, FeatureSlowBTMem]>;
  89 def : Proc<"athlon-mp",       [FeatureSSE1,   Feature3DNowA, FeatureSlowBTMem]>;
  90 def : Proc<"k8",              [Feature3DNowA, Feature64Bit,  FeatureSlowBTMem]>;
  91 def : Proc<"opteron",         [Feature3DNowA, Feature64Bit,  FeatureSlowBTMem]>;
  92 def : Proc<"athlon64",        [Feature3DNowA, Feature64Bit,  FeatureSlowBTMem]>;
  93 def : Proc<"athlon-fx",       [Feature3DNowA, Feature64Bit,  FeatureSlowBTMem]>;
  94
  95 def : Proc<"winchip-c6",      [FeatureMMX]>;
  96 def : Proc<"winchip2",        [FeatureMMX, Feature3DNow]>;
  97 def : Proc<"c3",              [FeatureMMX, Feature3DNow]>;
  98 def : Proc<"c3-2",            [FeatureSSE1]>;
  99
 100 //===----------------------------------------------------------------------===//
 101 // Register File Description
 102 //===----------------------------------------------------------------------===//
 103
 104 include "X86RegisterInfo.td"
 105
 106 //===----------------------------------------------------------------------===//
 107 // Instruction Descriptions
 108 //===----------------------------------------------------------------------===//
 109
 110 include "X86InstrInfo.td"
 111
 112 def X86InstrInfo : InstrInfo {
 113
 114   // Define how we want to layout our TargetSpecific information field... This
 115   // should be kept up-to-date with the fields in the X86InstrInfo.h file.
 116   let TSFlagsFields = ["FormBits",
 117                        "hasOpSizePrefix",
 118                        "hasAdSizePrefix",
 119                        "Prefix",
 120                        "hasREX_WPrefix",
 121                        "ImmTypeBits",
 122                        "FPFormBits",
 123                        "hasLockPrefix",
 124                        "SegOvrBits",
 125                        "Opcode"];
 126   let TSFlagsShifts = [0,
 127                        6,
 128                        7,
 129                        8,
 130                        12,
 131                        13,
 132                        16,
 133                        19,
 134                        20,
 135                        24];
 136 }
 137
 138 //===----------------------------------------------------------------------===//
 139 // Calling Conventions
 140 //===----------------------------------------------------------------------===//
 141
 142 include "X86CallingConv.td"
 143
 144
 145 //===----------------------------------------------------------------------===//
 146 // Assembly Printers
 147 //===----------------------------------------------------------------------===//
 148
 149 // The X86 target supports two different syntaxes for emitting machine code.
 150 // This is controlled by the -x86-asm-syntax={att|intel}
 151 def ATTAsmWriter : AsmWriter {
 152   string AsmWriterClassName  = "ATTAsmPrinter";
 153   int Variant = 0;
 154 }
 155 def IntelAsmWriter : AsmWriter {
 156   string AsmWriterClassName  = "IntelAsmPrinter";
 157   int Variant = 1;
 158 }
 159
 160
 161 def X86 : Target {
 162   // Information about the instructions...
 163   let InstructionSet = X86InstrInfo;
 164
 165   let AssemblyWriters = [ATTAsmWriter, IntelAsmWriter];
 166 }