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, referred
  11 // to 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 state
  21 //
  22
  23 def Mode64Bit : SubtargetFeature<"64bit-mode", "In64BitMode", "true",
  24                                   "64-bit mode (x86_64)">;
  25
  26 //===----------------------------------------------------------------------===//
  27 // X86 Subtarget features
  28 //===----------------------------------------------------------------------===//
  29
  30 def FeatureCMOV    : SubtargetFeature<"cmov","HasCMov", "true",
  31                                       "Enable conditional move instructions">;
  32
  33 def FeaturePOPCNT   : SubtargetFeature<"popcnt", "HasPOPCNT", "true",
  34                                        "Support POPCNT instruction">;
  35
  36
  37 def FeatureMMX     : SubtargetFeature<"mmx","X86SSELevel", "MMX",
  38                                       "Enable MMX instructions">;
  39 def FeatureSSE1    : SubtargetFeature<"sse", "X86SSELevel", "SSE1",
  40                                       "Enable SSE instructions",
  41                                       // SSE codegen depends on cmovs, and all
  42                                       // SSE1+ processors support them.
  43                                       [FeatureMMX, FeatureCMOV]>;
  44 def FeatureSSE2    : SubtargetFeature<"sse2", "X86SSELevel", "SSE2",
  45                                       "Enable SSE2 instructions",
  46                                       [FeatureSSE1]>;
  47 def FeatureSSE3    : SubtargetFeature<"sse3", "X86SSELevel", "SSE3",
  48                                       "Enable SSE3 instructions",
  49                                       [FeatureSSE2]>;
  50 def FeatureSSSE3   : SubtargetFeature<"ssse3", "X86SSELevel", "SSSE3",
  51                                       "Enable SSSE3 instructions",
  52                                       [FeatureSSE3]>;
  53 def FeatureSSE41   : SubtargetFeature<"sse41", "X86SSELevel", "SSE41",
  54                                       "Enable SSE 4.1 instructions",
  55                                       [FeatureSSSE3]>;
  56 def FeatureSSE42   : SubtargetFeature<"sse42", "X86SSELevel", "SSE42",
  57                                       "Enable SSE 4.2 instructions",
  58                                       [FeatureSSE41]>;
  59 def Feature3DNow   : SubtargetFeature<"3dnow", "X863DNowLevel", "ThreeDNow",
  60                                       "Enable 3DNow! instructions",
  61                                       [FeatureMMX]>;
  62 def Feature3DNowA  : SubtargetFeature<"3dnowa", "X863DNowLevel", "ThreeDNowA",
  63                                       "Enable 3DNow! Athlon instructions",
  64                                       [Feature3DNow]>;
  65 // All x86-64 hardware has SSE2, but we don't mark SSE2 as an implied
  66 // feature, because SSE2 can be disabled (e.g. for compiling OS kernels)
  67 // without disabling 64-bit mode.
  68 def Feature64Bit   : SubtargetFeature<"64bit", "HasX86_64", "true",
  69                                       "Support 64-bit instructions",
  70                                       [FeatureCMOV]>;
  71 def FeatureCMPXCHG16B : SubtargetFeature<"cmpxchg16b", "HasCmpxchg16b", "true",
  72                                       "64-bit with cmpxchg16b",
  73                                       [Feature64Bit]>;
  74 def FeatureSlowBTMem : SubtargetFeature<"slow-bt-mem", "IsBTMemSlow", "true",
  75                                        "Bit testing of memory is slow">;
  76 def FeatureFastUAMem : SubtargetFeature<"fast-unaligned-mem",
  77                                         "IsUAMemFast", "true",
  78                                         "Fast unaligned memory access">;
  79 def FeatureSSE4A   : SubtargetFeature<"sse4a", "HasSSE4A", "true",
  80                                       "Support SSE 4a instructions",
  81                                       [FeatureSSE3]>;
  82
  83 def FeatureAVX     : SubtargetFeature<"avx", "X86SSELevel", "AVX",
  84                                       "Enable AVX instructions",
  85                                       [FeatureSSE42]>;
  86 def FeatureAVX2    : SubtargetFeature<"avx2", "X86SSELevel", "AVX2",
  87                                       "Enable AVX2 instructions",
  88                                       [FeatureAVX]>;
  89 def FeatureAVX512   : SubtargetFeature<"avx-512", "X86SSELevel", "AVX512",
  90                                       "Enable AVX-512 instructions",
  91                                       [FeatureAVX2]>;
  92 def FeatureERI      : SubtargetFeature<"avx-512-eri", "HasERI", "true",
  93                       "Enable AVX-512 Exponential and Reciprocal Instructions">;
  94 def FeatureCDI      : SubtargetFeature<"avx-512-cdi", "HasCDI", "true",
  95                       "Enable AVX-512 Conflict Detection Instructions">;
  96 def FeaturePFI      : SubtargetFeature<"avx-512-pfi", "HasPFI", "true",
  97                       "Enable AVX-512 PreFetch Instructions">;
  98
  99 def FeaturePCLMUL  : SubtargetFeature<"pclmul", "HasPCLMUL", "true",
 100                          "Enable packed carry-less multiplication instructions",
 101                                [FeatureSSE2]>;
 102 def FeatureFMA     : SubtargetFeature<"fma", "HasFMA", "true",
 103                                       "Enable three-operand fused multiple-add",
 104                                       [FeatureAVX]>;
 105 def FeatureFMA4    : SubtargetFeature<"fma4", "HasFMA4", "true",
 106                                       "Enable four-operand fused multiple-add",
 107                                       [FeatureAVX, FeatureSSE4A]>;
 108 def FeatureXOP     : SubtargetFeature<"xop", "HasXOP", "true",
 109                                       "Enable XOP instructions",
 110                                       [FeatureFMA4]>;
 111 def FeatureVectorUAMem : SubtargetFeature<"vector-unaligned-mem",
 112                                           "HasVectorUAMem", "true",
 113                  "Allow unaligned memory operands on vector/SIMD instructions">;
 114 def FeatureAES     : SubtargetFeature<"aes", "HasAES", "true",
 115                                       "Enable AES instructions",
 116                                       [FeatureSSE2]>;
 117 def FeatureMOVBE   : SubtargetFeature<"movbe", "HasMOVBE", "true",
 118                                       "Support MOVBE instruction">;
 119 def FeatureRDRAND  : SubtargetFeature<"rdrand", "HasRDRAND", "true",
 120                                       "Support RDRAND instruction">;
 121 def FeatureF16C    : SubtargetFeature<"f16c", "HasF16C", "true",
 122                        "Support 16-bit floating point conversion instructions">;
 123 def FeatureFSGSBase : SubtargetFeature<"fsgsbase", "HasFSGSBase", "true",
 124                                        "Support FS/GS Base instructions">;
 125 def FeatureLZCNT   : SubtargetFeature<"lzcnt", "HasLZCNT", "true",
 126                                       "Support LZCNT instruction">;
 127 def FeatureBMI     : SubtargetFeature<"bmi", "HasBMI", "true",
 128                                       "Support BMI instructions">;
 129 def FeatureBMI2    : SubtargetFeature<"bmi2", "HasBMI2", "true",
 130                                       "Support BMI2 instructions">;
 131 def FeatureRTM     : SubtargetFeature<"rtm", "HasRTM", "true",
 132                                       "Support RTM instructions">;
 133 def FeatureHLE     : SubtargetFeature<"hle", "HasHLE", "true",
 134                                       "Support HLE">;
 135 def FeatureADX     : SubtargetFeature<"adx", "HasADX", "true",
 136                                       "Support ADX instructions">;
 137 def FeaturePRFCHW  : SubtargetFeature<"prfchw", "HasPRFCHW", "true",
 138                                       "Support PRFCHW instructions">;
 139 def FeatureRDSEED  : SubtargetFeature<"rdseed", "HasRDSEED", "true",
 140                                       "Support RDSEED instruction">;
 141 def FeatureLeaForSP : SubtargetFeature<"lea-sp", "UseLeaForSP", "true",
 142                                      "Use LEA for adjusting the stack pointer">;
 143 def FeatureSlowDivide : SubtargetFeature<"idiv-to-divb",
 144                                      "HasSlowDivide", "true",
 145                                      "Use small divide for positive values less than 256">;
 146 def FeaturePadShortFunctions : SubtargetFeature<"pad-short-functions",
 147                                      "PadShortFunctions", "true",
 148                                      "Pad short functions">;
 149 def FeatureCallRegIndirect : SubtargetFeature<"call-reg-indirect",
 150                                      "CallRegIndirect", "true",
 151                                      "Call register indirect">;
 152 def FeatureLEAUsesAG : SubtargetFeature<"lea-uses-ag", "LEAUsesAG", "true",
 153                                    "LEA instruction needs inputs at AG stage">;
 154
 155 //===----------------------------------------------------------------------===//
 156 // X86 processors supported.
 157 //===----------------------------------------------------------------------===//
 158
 159 include "X86Schedule.td"
 160
 161 def ProcIntelAtom : SubtargetFeature<"atom", "X86ProcFamily", "IntelAtom",
 162                     "Intel Atom processors">;
 163
 164 class Proc<string Name, list<SubtargetFeature> Features>
 165  : ProcessorModel<Name, GenericModel, Features>;
 166
 167 def : Proc<"generic",         []>;
 168 def : Proc<"i386",            []>;
 169 def : Proc<"i486",            []>;
 170 def : Proc<"i586",            []>;
 171 def : Proc<"pentium",         []>;
 172 def : Proc<"pentium-mmx",     [FeatureMMX]>;
 173 def : Proc<"i686",            []>;
 174 def : Proc<"pentiumpro",      [FeatureCMOV]>;
 175 def : Proc<"pentium2",        [FeatureMMX, FeatureCMOV]>;
 176 def : Proc<"pentium3",        [FeatureSSE1]>;
 177 def : Proc<"pentium3m",       [FeatureSSE1, FeatureSlowBTMem]>;
 178 def : Proc<"pentium-m",       [FeatureSSE2, FeatureSlowBTMem]>;
 179 def : Proc<"pentium4",        [FeatureSSE2]>;
 180 def : Proc<"pentium4m",       [FeatureSSE2, FeatureSlowBTMem]>;
 181 def : Proc<"x86-64",          [FeatureSSE2, Feature64Bit, FeatureSlowBTMem,
 182                                FeatureFastUAMem]>;
 183 // Intel Core Duo.
 184 def : ProcessorModel<"yonah", SandyBridgeModel,
 185                      [FeatureSSE3, FeatureSlowBTMem]>;
 186
 187 // NetBurst.
 188 def : Proc<"prescott", [FeatureSSE3, FeatureSlowBTMem]>;
 189 def : Proc<"nocona",   [FeatureSSE3, FeatureCMPXCHG16B, FeatureSlowBTMem]>;
 190
 191 // Intel Core 2 Solo/Duo.
 192 def : ProcessorModel<"core2", SandyBridgeModel,
 193                      [FeatureSSSE3, FeatureCMPXCHG16B, FeatureSlowBTMem]>;
 194 def : ProcessorModel<"penryn", SandyBridgeModel,
 195                      [FeatureSSE41, FeatureCMPXCHG16B, FeatureSlowBTMem]>;
 196
 197 // Atom.
 198 def : ProcessorModel<"atom", AtomModel,
 199                      [ProcIntelAtom, FeatureSSSE3, FeatureCMPXCHG16B,
 200                       FeatureMOVBE, FeatureSlowBTMem, FeatureLeaForSP,
 201                       FeatureSlowDivide,
 202                       FeatureCallRegIndirect,
 203                       FeatureLEAUsesAG,
 204                       FeaturePadShortFunctions]>;
 205
 206 // "Arrandale" along with corei3 and corei5
 207 def : ProcessorModel<"corei7", SandyBridgeModel,
 208                      [FeatureSSE42, FeatureCMPXCHG16B, FeatureSlowBTMem,
 209                       FeatureFastUAMem, FeaturePOPCNT, FeatureAES]>;
 210
 211 def : ProcessorModel<"nehalem", SandyBridgeModel,
 212                      [FeatureSSE42,  FeatureCMPXCHG16B, FeatureSlowBTMem,
 213                       FeatureFastUAMem, FeaturePOPCNT]>;
 214 // Westmere is a similar machine to nehalem with some additional features.
 215 // Westmere is the corei3/i5/i7 path from nehalem to sandybridge
 216 def : ProcessorModel<"westmere", SandyBridgeModel,
 217                      [FeatureSSE42, FeatureCMPXCHG16B, FeatureSlowBTMem,
 218                       FeatureFastUAMem, FeaturePOPCNT, FeatureAES,
 219                       FeaturePCLMUL]>;
 220 // Sandy Bridge
 221 // SSE is not listed here since llvm treats AVX as a reimplementation of SSE,
 222 // rather than a superset.
 223 def : ProcessorModel<"corei7-avx", SandyBridgeModel,
 224                      [FeatureAVX, FeatureCMPXCHG16B, FeatureFastUAMem,
 225                       FeaturePOPCNT, FeatureAES, FeaturePCLMUL]>;
 226 // Ivy Bridge
 227 def : ProcessorModel<"core-avx-i", SandyBridgeModel,
 228                      [FeatureAVX, FeatureCMPXCHG16B, FeatureFastUAMem,
 229                       FeaturePOPCNT, FeatureAES, FeaturePCLMUL, FeatureRDRAND,
 230                       FeatureF16C, FeatureFSGSBase]>;
 231
 232 // Haswell
 233 def : ProcessorModel<"core-avx2", HaswellModel,
 234                      [FeatureAVX2, FeatureCMPXCHG16B, FeatureFastUAMem,
 235                       FeaturePOPCNT, FeatureAES, FeaturePCLMUL, FeatureRDRAND,
 236                       FeatureF16C, FeatureFSGSBase, FeatureMOVBE, FeatureLZCNT,
 237                       FeatureBMI, FeatureBMI2, FeatureFMA, FeatureRTM,
 238                       FeatureHLE]>;
 239
 240 // KNL
 241 // FIXME: define KNL model
 242 def : ProcessorModel<"knl", HaswellModel,
 243                      [FeatureAVX512, FeatureERI, FeatureCDI, FeaturePFI,
 244                       FeatureCMPXCHG16B, FeatureFastUAMem, FeaturePOPCNT,
 245                       FeatureAES, FeaturePCLMUL, FeatureRDRAND, FeatureF16C,
 246                       FeatureFSGSBase, FeatureMOVBE, FeatureLZCNT, FeatureBMI,
 247                       FeatureBMI2, FeatureFMA, FeatureRTM, FeatureHLE]>;
 248
 249 def : Proc<"k6",              [FeatureMMX]>;
 250 def : Proc<"k6-2",            [Feature3DNow]>;
 251 def : Proc<"k6-3",            [Feature3DNow]>;
 252 def : Proc<"athlon",          [Feature3DNowA, FeatureSlowBTMem]>;
 253 def : Proc<"athlon-tbird",    [Feature3DNowA, FeatureSlowBTMem]>;
 254 def : Proc<"athlon-4",        [FeatureSSE1,   Feature3DNowA, FeatureSlowBTMem]>;
 255 def : Proc<"athlon-xp",       [FeatureSSE1,   Feature3DNowA, FeatureSlowBTMem]>;
 256 def : Proc<"athlon-mp",       [FeatureSSE1,   Feature3DNowA, FeatureSlowBTMem]>;
 257 def : Proc<"k8",              [FeatureSSE2,   Feature3DNowA, Feature64Bit,
 258                                FeatureSlowBTMem]>;
 259 def : Proc<"opteron",         [FeatureSSE2,   Feature3DNowA, Feature64Bit,
 260                                FeatureSlowBTMem]>;
 261 def : Proc<"athlon64",        [FeatureSSE2,   Feature3DNowA, Feature64Bit,
 262                                FeatureSlowBTMem]>;
 263 def : Proc<"athlon-fx",       [FeatureSSE2,   Feature3DNowA, Feature64Bit,
 264                                FeatureSlowBTMem]>;
 265 def : Proc<"k8-sse3",         [FeatureSSE3,   Feature3DNowA, FeatureCMPXCHG16B,
 266                                FeatureSlowBTMem]>;
 267 def : Proc<"opteron-sse3",    [FeatureSSE3,   Feature3DNowA, FeatureCMPXCHG16B,
 268                                FeatureSlowBTMem]>;
 269 def : Proc<"athlon64-sse3",   [FeatureSSE3,   Feature3DNowA, FeatureCMPXCHG16B,
 270                                FeatureSlowBTMem]>;
 271 def : Proc<"amdfam10",        [FeatureSSE4A,
 272                                Feature3DNowA, FeatureCMPXCHG16B, FeatureLZCNT,
 273                                FeaturePOPCNT, FeatureSlowBTMem]>;
 274 // Bobcat
 275 def : Proc<"btver1",          [FeatureSSSE3, FeatureSSE4A, FeatureCMPXCHG16B,
 276                                FeatureLZCNT, FeaturePOPCNT]>;
 277 // Jaguar
 278 def : Proc<"btver2",          [FeatureAVX, FeatureSSE4A, FeatureCMPXCHG16B,
 279                                FeatureAES, FeaturePCLMUL, FeatureBMI,
 280                                FeatureF16C, FeatureMOVBE, FeatureLZCNT,
 281                                FeaturePOPCNT]>;
 282 // Bulldozer
 283 def : Proc<"bdver1",          [FeatureXOP, FeatureFMA4, FeatureCMPXCHG16B,
 284                                FeatureAES, FeaturePCLMUL,
 285                                FeatureLZCNT, FeaturePOPCNT]>;
 286 // Piledriver
 287 def : Proc<"bdver2",          [FeatureXOP, FeatureFMA4, FeatureCMPXCHG16B,
 288                                FeatureAES, FeaturePCLMUL,
 289                                FeatureF16C, FeatureLZCNT,
 290                                FeaturePOPCNT, FeatureBMI, FeatureFMA]>;
 291 def : Proc<"geode",           [Feature3DNowA]>;
 292
 293 def : Proc<"winchip-c6",      [FeatureMMX]>;
 294 def : Proc<"winchip2",        [Feature3DNow]>;
 295 def : Proc<"c3",              [Feature3DNow]>;
 296 def : Proc<"c3-2",            [FeatureSSE1]>;
 297
 298 //===----------------------------------------------------------------------===//
 299 // Register File Description
 300 //===----------------------------------------------------------------------===//
 301
 302 include "X86RegisterInfo.td"
 303
 304 //===----------------------------------------------------------------------===//
 305 // Instruction Descriptions
 306 //===----------------------------------------------------------------------===//
 307
 308 include "X86InstrInfo.td"
 309
 310 def X86InstrInfo : InstrInfo;
 311
 312 //===----------------------------------------------------------------------===//
 313 // Calling Conventions
 314 //===----------------------------------------------------------------------===//
 315
 316 include "X86CallingConv.td"
 317
 318
 319 //===----------------------------------------------------------------------===//
 320 // Assembly Parser
 321 //===----------------------------------------------------------------------===//
 322
 323 def ATTAsmParser : AsmParser {
 324   string AsmParserClassName = "AsmParser";
 325 }
 326
 327 def ATTAsmParserVariant : AsmParserVariant {
 328   int Variant = 0;
 329
 330   // Variant name.
 331   string Name = "att";
 332
 333   // Discard comments in assembly strings.
 334   string CommentDelimiter = "#";
 335
 336   // Recognize hard coded registers.
 337   string RegisterPrefix = "%";
 338 }
 339
 340 def IntelAsmParserVariant : AsmParserVariant {
 341   int Variant = 1;
 342
 343   // Variant name.
 344   string Name = "intel";
 345
 346   // Discard comments in assembly strings.
 347   string CommentDelimiter = ";";
 348
 349   // Recognize hard coded registers.
 350   string RegisterPrefix = "";
 351 }
 352
 353 //===----------------------------------------------------------------------===//
 354 // Assembly Printers
 355 //===----------------------------------------------------------------------===//
 356
 357 // The X86 target supports two different syntaxes for emitting machine code.
 358 // This is controlled by the -x86-asm-syntax={att|intel}
 359 def ATTAsmWriter : AsmWriter {
 360   string AsmWriterClassName  = "ATTInstPrinter";
 361   int Variant = 0;
 362   bit isMCAsmWriter = 1;
 363 }
 364 def IntelAsmWriter : AsmWriter {
 365   string AsmWriterClassName  = "IntelInstPrinter";
 366   int Variant = 1;
 367   bit isMCAsmWriter = 1;
 368 }
 369
 370 def X86 : Target {
 371   // Information about the instructions...
 372   let InstructionSet = X86InstrInfo;
 373   let AssemblyParsers = [ATTAsmParser];
 374   let AssemblyParserVariants = [ATTAsmParserVariant, IntelAsmParserVariant];
 375   let AssemblyWriters = [ATTAsmWriter, IntelAsmWriter];
 376 }