llvm/lib/TargetParser/X86TargetParser.cpp

   1 //===-- X86TargetParser - Parser for X86 features ---------------*- C++ -*-===//
   2 //
   3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
   4 // See https://llvm.org/LICENSE.txt for license information.
   5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
   6 //
   7 //===----------------------------------------------------------------------===//
   8 //
   9 // This file implements a target parser to recognise X86 hardware features.
  10 //
  11 //===----------------------------------------------------------------------===//
  12
  13 #include "llvm/TargetParser/X86TargetParser.h"
  14 #include "llvm/ADT/Bitset.h"
  15 #include "llvm/ADT/StringSwitch.h"
  16 #include <numeric>
  17
  18 using namespace llvm;
  19 using namespace llvm::X86;
  20
  21 namespace {
  22
  23 using FeatureBitset = Bitset<X86::CPU_FEATURE_MAX>;
  24
  25 struct ProcInfo {
  26   StringLiteral Name;
  27   X86::CPUKind Kind;
  28   unsigned KeyFeature;
  29   FeatureBitset Features;
  30   char Mangling;
  31   bool OnlyForCPUDispatchSpecific;
  32 };
  33
  34 struct FeatureInfo {
  35   StringLiteral NameWithPlus;
  36   FeatureBitset ImpliedFeatures;
  37
  38   StringRef getName(bool WithPlus = false) const {
  39     assert(NameWithPlus[0] == '+' && "Expected string to start with '+'");
  40     if (WithPlus)
  41       return NameWithPlus;
  42     return NameWithPlus.drop_front();
  43   }
  44 };
  45
  46 } // end anonymous namespace
  47
  48 #define X86_FEATURE(ENUM, STRING)                                              \
  49   constexpr FeatureBitset Feature##ENUM = {X86::FEATURE_##ENUM};
  50 #include "llvm/TargetParser/X86TargetParser.def"
  51
  52 // Pentium with MMX.
  53 constexpr FeatureBitset FeaturesPentiumMMX =
  54     FeatureX87 | FeatureCMPXCHG8B | FeatureMMX;
  55
  56 // Pentium 2 and 3.
  57 constexpr FeatureBitset FeaturesPentium2 =
  58     FeatureX87 | FeatureCMPXCHG8B | FeatureMMX | FeatureFXSR | FeatureCMOV;
  59 constexpr FeatureBitset FeaturesPentium3 = FeaturesPentium2 | FeatureSSE;
  60
  61 // Pentium 4 CPUs
  62 constexpr FeatureBitset FeaturesPentium4 = FeaturesPentium3 | FeatureSSE2;
  63 constexpr FeatureBitset FeaturesPrescott = FeaturesPentium4 | FeatureSSE3;
  64 constexpr FeatureBitset FeaturesNocona =
  65     FeaturesPrescott | Feature64BIT | FeatureCMPXCHG16B;
  66
  67 // Basic 64-bit capable CPU.
  68 constexpr FeatureBitset FeaturesX86_64 = FeaturesPentium4 | Feature64BIT;
  69 constexpr FeatureBitset FeaturesX86_64_V2 = FeaturesX86_64 | FeatureSAHF |
  70                                             FeaturePOPCNT | FeatureCRC32 |
  71                                             FeatureSSE4_2 | FeatureCMPXCHG16B;
  72 constexpr FeatureBitset FeaturesX86_64_V3 =
  73     FeaturesX86_64_V2 | FeatureAVX2 | FeatureBMI | FeatureBMI2 | FeatureF16C |
  74     FeatureFMA | FeatureLZCNT | FeatureMOVBE | FeatureXSAVE;
  75 constexpr FeatureBitset FeaturesX86_64_V4 = FeaturesX86_64_V3 | FeatureEVEX512 |
  76                                             FeatureAVX512BW | FeatureAVX512CD |
  77                                             FeatureAVX512DQ | FeatureAVX512VL;
  78
  79 // Intel Core CPUs
  80 constexpr FeatureBitset FeaturesCore2 =
  81     FeaturesNocona | FeatureSAHF | FeatureSSSE3;
  82 constexpr FeatureBitset FeaturesPenryn = FeaturesCore2 | FeatureSSE4_1;
  83 constexpr FeatureBitset FeaturesNehalem =
  84     FeaturesPenryn | FeaturePOPCNT | FeatureCRC32 | FeatureSSE4_2;
  85 constexpr FeatureBitset FeaturesWestmere = FeaturesNehalem | FeaturePCLMUL;
  86 constexpr FeatureBitset FeaturesSandyBridge =
  87     FeaturesWestmere | FeatureAVX | FeatureXSAVE | FeatureXSAVEOPT;
  88 constexpr FeatureBitset FeaturesIvyBridge =
  89     FeaturesSandyBridge | FeatureF16C | FeatureFSGSBASE | FeatureRDRND;
  90 constexpr FeatureBitset FeaturesHaswell =
  91     FeaturesIvyBridge | FeatureAVX2 | FeatureBMI | FeatureBMI2 | FeatureFMA |
  92     FeatureINVPCID | FeatureLZCNT | FeatureMOVBE;
  93 constexpr FeatureBitset FeaturesBroadwell =
  94     FeaturesHaswell | FeatureADX | FeaturePRFCHW | FeatureRDSEED;
  95
  96 // Intel Knights Landing and Knights Mill
  97 // Knights Landing has feature parity with Broadwell.
  98 constexpr FeatureBitset FeaturesKNL =
  99     FeaturesBroadwell | FeatureAES | FeatureAVX512F | FeatureEVEX512 |
 100     FeatureAVX512CD | FeatureAVX512ER | FeatureAVX512PF | FeaturePREFETCHWT1;
 101 constexpr FeatureBitset FeaturesKNM = FeaturesKNL | FeatureAVX512VPOPCNTDQ;
 102
 103 // Intel Skylake processors.
 104 constexpr FeatureBitset FeaturesSkylakeClient =
 105     FeaturesBroadwell | FeatureAES | FeatureCLFLUSHOPT | FeatureXSAVEC |
 106     FeatureXSAVES | FeatureSGX;
 107 // SkylakeServer inherits all SkylakeClient features except SGX.
 108 // FIXME: That doesn't match gcc.
 109 constexpr FeatureBitset FeaturesSkylakeServer =
 110     (FeaturesSkylakeClient & ~FeatureSGX) | FeatureAVX512F | FeatureEVEX512 |
 111     FeatureAVX512CD | FeatureAVX512DQ | FeatureAVX512BW | FeatureAVX512VL |
 112     FeatureCLWB | FeaturePKU;
 113 constexpr FeatureBitset FeaturesCascadeLake =
 114     FeaturesSkylakeServer | FeatureAVX512VNNI;
 115 constexpr FeatureBitset FeaturesCooperLake =
 116     FeaturesCascadeLake | FeatureAVX512BF16;
 117
 118 // Intel 10nm processors.
 119 constexpr FeatureBitset FeaturesCannonlake =
 120     FeaturesSkylakeClient | FeatureAVX512F | FeatureEVEX512 | FeatureAVX512CD |
 121     FeatureAVX512DQ | FeatureAVX512BW | FeatureAVX512VL | FeatureAVX512IFMA |
 122     FeatureAVX512VBMI | FeaturePKU | FeatureSHA;
 123 constexpr FeatureBitset FeaturesICLClient =
 124     FeaturesCannonlake | FeatureAVX512BITALG | FeatureAVX512VBMI2 |
 125     FeatureAVX512VNNI | FeatureAVX512VPOPCNTDQ | FeatureGFNI | FeatureRDPID |
 126     FeatureVAES | FeatureVPCLMULQDQ;
 127 constexpr FeatureBitset FeaturesRocketlake = FeaturesICLClient & ~FeatureSGX;
 128 constexpr FeatureBitset FeaturesICLServer =
 129     FeaturesICLClient | FeatureCLWB | FeaturePCONFIG | FeatureWBNOINVD;
 130 constexpr FeatureBitset FeaturesTigerlake =
 131     FeaturesICLClient | FeatureAVX512VP2INTERSECT | FeatureMOVDIR64B |
 132     FeatureCLWB | FeatureMOVDIRI | FeatureSHSTK | FeatureKL | FeatureWIDEKL;
 133 constexpr FeatureBitset FeaturesSapphireRapids =
 134     FeaturesICLServer | FeatureAMX_BF16 | FeatureAMX_INT8 | FeatureAMX_TILE |
 135     FeatureAVX512BF16 | FeatureAVX512FP16 | FeatureAVXVNNI | FeatureCLDEMOTE |
 136     FeatureENQCMD | FeatureMOVDIR64B | FeatureMOVDIRI | FeaturePTWRITE |
 137     FeatureSERIALIZE | FeatureSHSTK | FeatureTSXLDTRK | FeatureUINTR |
 138     FeatureWAITPKG;
 139 constexpr FeatureBitset FeaturesGraniteRapids =
 140     FeaturesSapphireRapids | FeatureAMX_FP16 | FeaturePREFETCHI;
 141
 142 // Intel Atom processors.
 143 // Bonnell has feature parity with Core2 and adds MOVBE.
 144 constexpr FeatureBitset FeaturesBonnell = FeaturesCore2 | FeatureMOVBE;
 145 // Silvermont has parity with Westmere and Bonnell plus PRFCHW and RDRND.
 146 constexpr FeatureBitset FeaturesSilvermont =
 147     FeaturesBonnell | FeaturesWestmere | FeaturePRFCHW | FeatureRDRND;
 148 constexpr FeatureBitset FeaturesGoldmont =
 149     FeaturesSilvermont | FeatureAES | FeatureCLFLUSHOPT | FeatureFSGSBASE |
 150     FeatureRDSEED | FeatureSHA | FeatureXSAVE | FeatureXSAVEC |
 151     FeatureXSAVEOPT | FeatureXSAVES;
 152 constexpr FeatureBitset FeaturesGoldmontPlus =
 153     FeaturesGoldmont | FeaturePTWRITE | FeatureRDPID | FeatureSGX;
 154 constexpr FeatureBitset FeaturesTremont =
 155     FeaturesGoldmontPlus | FeatureCLWB | FeatureGFNI;
 156 constexpr FeatureBitset FeaturesAlderlake =
 157     FeaturesTremont | FeatureADX | FeatureBMI | FeatureBMI2 | FeatureF16C |
 158     FeatureFMA | FeatureINVPCID | FeatureLZCNT | FeaturePCONFIG | FeaturePKU |
 159     FeatureSERIALIZE | FeatureSHSTK | FeatureVAES | FeatureVPCLMULQDQ |
 160     FeatureCLDEMOTE | FeatureMOVDIR64B | FeatureMOVDIRI | FeatureWAITPKG |
 161     FeatureAVXVNNI | FeatureHRESET | FeatureWIDEKL;
 162 constexpr FeatureBitset FeaturesSierraforest =
 163     FeaturesAlderlake | FeatureCMPCCXADD | FeatureAVXIFMA | FeatureUINTR |
 164     FeatureENQCMD | FeatureAVXNECONVERT | FeatureAVXVNNIINT8;
 165 constexpr FeatureBitset FeaturesArrowlakeS = FeaturesSierraforest |
 166     FeatureAVXVNNIINT16 | FeatureSHA512 | FeatureSM3 | FeatureSM4;
 167 constexpr FeatureBitset FeaturesPantherlake =
 168     FeaturesArrowlakeS | FeaturePREFETCHI;
 169 constexpr FeatureBitset FeaturesClearwaterforest =
 170     FeaturesArrowlakeS | FeatureUSERMSR | FeaturePREFETCHI;
 171
 172 // Geode Processor.
 173 constexpr FeatureBitset FeaturesGeode =
 174     FeatureX87 | FeatureCMPXCHG8B | FeatureMMX | Feature3DNOW | Feature3DNOWA;
 175
 176 // K6 processor.
 177 constexpr FeatureBitset FeaturesK6 = FeatureX87 | FeatureCMPXCHG8B | FeatureMMX;
 178
 179 // K7 and K8 architecture processors.
 180 constexpr FeatureBitset FeaturesAthlon =
 181     FeatureX87 | FeatureCMPXCHG8B | FeatureMMX | Feature3DNOW | Feature3DNOWA;
 182 constexpr FeatureBitset FeaturesAthlonXP =
 183     FeaturesAthlon | FeatureFXSR | FeatureSSE;
 184 constexpr FeatureBitset FeaturesK8 =
 185     FeaturesAthlonXP | FeatureSSE2 | Feature64BIT;
 186 constexpr FeatureBitset FeaturesK8SSE3 = FeaturesK8 | FeatureSSE3;
 187 constexpr FeatureBitset FeaturesAMDFAM10 =
 188     FeaturesK8SSE3 | FeatureCMPXCHG16B | FeatureLZCNT | FeaturePOPCNT |
 189     FeaturePRFCHW | FeatureSAHF | FeatureSSE4_A;
 190
 191 // Bobcat architecture processors.
 192 constexpr FeatureBitset FeaturesBTVER1 =
 193     FeatureX87 | FeatureCMPXCHG8B | FeatureCMPXCHG16B | Feature64BIT |
 194     FeatureFXSR | FeatureLZCNT | FeatureMMX | FeaturePOPCNT | FeaturePRFCHW |
 195     FeatureSSE | FeatureSSE2 | FeatureSSE3 | FeatureSSSE3 | FeatureSSE4_A |
 196     FeatureSAHF;
 197 constexpr FeatureBitset FeaturesBTVER2 =
 198     FeaturesBTVER1 | FeatureAES | FeatureAVX | FeatureBMI | FeatureCRC32 |
 199     FeatureF16C | FeatureMOVBE | FeaturePCLMUL | FeatureXSAVE | FeatureXSAVEOPT;
 200
 201 // AMD Bulldozer architecture processors.
 202 constexpr FeatureBitset FeaturesBDVER1 =
 203     FeatureX87 | FeatureAES | FeatureAVX | FeatureCMPXCHG8B |
 204     FeatureCMPXCHG16B | FeatureCRC32 | Feature64BIT | FeatureFMA4 |
 205     FeatureFXSR | FeatureLWP | FeatureLZCNT | FeatureMMX | FeaturePCLMUL |
 206     FeaturePOPCNT | FeaturePRFCHW | FeatureSAHF | FeatureSSE | FeatureSSE2 |
 207     FeatureSSE3 | FeatureSSSE3 | FeatureSSE4_1 | FeatureSSE4_2 | FeatureSSE4_A |
 208     FeatureXOP | FeatureXSAVE;
 209 constexpr FeatureBitset FeaturesBDVER2 =
 210     FeaturesBDVER1 | FeatureBMI | FeatureFMA | FeatureF16C | FeatureTBM;
 211 constexpr FeatureBitset FeaturesBDVER3 =
 212     FeaturesBDVER2 | FeatureFSGSBASE | FeatureXSAVEOPT;
 213 constexpr FeatureBitset FeaturesBDVER4 = FeaturesBDVER3 | FeatureAVX2 |
 214                                          FeatureBMI2 | FeatureMOVBE |
 215                                          FeatureMWAITX | FeatureRDRND;
 216
 217 // AMD Zen architecture processors.
 218 constexpr FeatureBitset FeaturesZNVER1 =
 219     FeatureX87 | FeatureADX | FeatureAES | FeatureAVX | FeatureAVX2 |
 220     FeatureBMI | FeatureBMI2 | FeatureCLFLUSHOPT | FeatureCLZERO |
 221     FeatureCMPXCHG8B | FeatureCMPXCHG16B | FeatureCRC32 | Feature64BIT |
 222     FeatureF16C | FeatureFMA | FeatureFSGSBASE | FeatureFXSR | FeatureLZCNT |
 223     FeatureMMX | FeatureMOVBE | FeatureMWAITX | FeaturePCLMUL | FeaturePOPCNT |
 224     FeaturePRFCHW | FeatureRDRND | FeatureRDSEED | FeatureSAHF | FeatureSHA |
 225     FeatureSSE | FeatureSSE2 | FeatureSSE3 | FeatureSSSE3 | FeatureSSE4_1 |
 226     FeatureSSE4_2 | FeatureSSE4_A | FeatureXSAVE | FeatureXSAVEC |
 227     FeatureXSAVEOPT | FeatureXSAVES;
 228 constexpr FeatureBitset FeaturesZNVER2 = FeaturesZNVER1 | FeatureCLWB |
 229                                          FeatureRDPID | FeatureRDPRU |
 230                                          FeatureWBNOINVD;
 231 static constexpr FeatureBitset FeaturesZNVER3 = FeaturesZNVER2 |
 232                                                 FeatureINVPCID | FeaturePKU |
 233                                                 FeatureVAES | FeatureVPCLMULQDQ;
 234 static constexpr FeatureBitset FeaturesZNVER4 =
 235     FeaturesZNVER3 | FeatureAVX512F | FeatureEVEX512 | FeatureAVX512CD |
 236     FeatureAVX512DQ | FeatureAVX512BW | FeatureAVX512VL | FeatureAVX512IFMA |
 237     FeatureAVX512VBMI | FeatureAVX512VBMI2 | FeatureAVX512VNNI |
 238     FeatureAVX512BITALG | FeatureAVX512VPOPCNTDQ | FeatureAVX512BF16 |
 239     FeatureGFNI | FeatureSHSTK;
 240
 241 // D151696 tranplanted Mangling and OnlyForCPUDispatchSpecific from
 242 // X86TargetParser.def to here. They are assigned by following ways:
 243 // 1. Copy the mangling from the original CPU_SPEICIFC MACROs. If no, assign
 244 // to '\0' by default, which means not support cpu_specific/dispatch feature.
 245 // 2. set OnlyForCPUDispatchSpecific as true if this cpu name was not
 246 // listed here before, which means it doesn't support -march, -mtune and so on.
 247 // FIXME: Remove OnlyForCPUDispatchSpecific after all CPUs here support both
 248 // cpu_dispatch/specific() feature and -march, -mtune, and so on.
 249 // clang-format off
 250 constexpr ProcInfo Processors[] = {
 251  // Empty processor. Include X87 and CMPXCHG8 for backwards compatibility.
 252   { {""}, CK_None, ~0U, FeatureX87 | FeatureCMPXCHG8B, '\0', false },
 253   { {"generic"}, CK_None, ~0U, FeatureX87 | FeatureCMPXCHG8B | Feature64BIT, 'A', true },
 254   // i386-generation processors.
 255   { {"i386"}, CK_i386, ~0U, FeatureX87, '\0', false },
 256   // i486-generation processors.
 257   { {"i486"}, CK_i486, ~0U, FeatureX87, '\0', false },
 258   { {"winchip-c6"}, CK_WinChipC6, ~0U, FeaturesPentiumMMX, '\0', false },
 259   { {"winchip2"}, CK_WinChip2, ~0U, FeaturesPentiumMMX | Feature3DNOW, '\0', false },
 260   { {"c3"}, CK_C3, ~0U, FeaturesPentiumMMX | Feature3DNOW, '\0', false },
 261   // i586-generation processors, P5 microarchitecture based.
 262   { {"i586"}, CK_i586, ~0U, FeatureX87 | FeatureCMPXCHG8B, '\0', false },
 263   { {"pentium"}, CK_Pentium, ~0U, FeatureX87 | FeatureCMPXCHG8B, 'B', false },
 264   { {"pentium-mmx"}, CK_PentiumMMX, ~0U, FeaturesPentiumMMX, '\0', false },
 265   { {"pentium_mmx"}, CK_PentiumMMX, ~0U, FeaturesPentiumMMX, 'D', true },
 266   // i686-generation processors, P6 / Pentium M microarchitecture based.
 267   { {"pentiumpro"}, CK_PentiumPro, ~0U, FeatureCMOV | FeatureX87 | FeatureCMPXCHG8B, 'C', false },
 268   { {"pentium_pro"}, CK_PentiumPro, ~0U, FeatureCMOV | FeatureX87 | FeatureCMPXCHG8B, 'C', true },
 269   { {"i686"}, CK_i686, ~0U, FeatureCMOV | FeatureX87 | FeatureCMPXCHG8B, '\0', false },
 270   { {"pentium2"}, CK_Pentium2, ~0U, FeaturesPentium2, 'E', false },
 271   { {"pentium_ii"}, CK_Pentium2, ~0U, FeaturesPentium2, 'E', true },
 272   { {"pentium3"}, CK_Pentium3, ~0U, FeaturesPentium3, 'H', false },
 273   { {"pentium3m"}, CK_Pentium3, ~0U, FeaturesPentium3, 'H', false },
 274   { {"pentium_iii"}, CK_Pentium3, ~0U, FeaturesPentium3, 'H', true },
 275   { {"pentium_iii_no_xmm_regs"}, CK_Pentium3, ~0U, FeaturesPentium3, 'H', true },
 276   { {"pentium-m"}, CK_PentiumM, ~0U, FeaturesPentium4, '\0', false },
 277   { {"pentium_m"}, CK_PentiumM, ~0U, FeaturesPentium4, 'K', true },
 278   { {"c3-2"}, CK_C3_2, ~0U, FeaturesPentium3, '\0', false },
 279   { {"yonah"}, CK_Yonah, ~0U, FeaturesPrescott, 'L', false },
 280   // Netburst microarchitecture based processors.
 281   { {"pentium4"}, CK_Pentium4, ~0U, FeaturesPentium4, 'J', false },
 282   { {"pentium4m"}, CK_Pentium4, ~0U, FeaturesPentium4, 'J', false },
 283   { {"pentium_4"}, CK_Pentium4, ~0U, FeaturesPentium4, 'J', true },
 284   { {"pentium_4_sse3"}, CK_Prescott, ~0U, FeaturesPrescott, 'L', true },
 285   { {"prescott"}, CK_Prescott, ~0U, FeaturesPrescott, 'L', false },
 286   { {"nocona"}, CK_Nocona, ~0U, FeaturesNocona, 'L', false },
 287   // Core microarchitecture based processors.
 288   { {"core2"}, CK_Core2, FEATURE_SSSE3, FeaturesCore2, 'M', false },
 289   { {"core_2_duo_ssse3"}, CK_Core2, ~0U, FeaturesCore2, 'M', true },
 290   { {"penryn"}, CK_Penryn, ~0U, FeaturesPenryn, 'N', false },
 291   { {"core_2_duo_sse4_1"}, CK_Penryn, ~0U, FeaturesPenryn, 'N', true },
 292   // Atom processors
 293   { {"bonnell"}, CK_Bonnell, FEATURE_SSSE3, FeaturesBonnell, 'O', false },
 294   { {"atom"}, CK_Bonnell, FEATURE_SSSE3, FeaturesBonnell, 'O', false },
 295   { {"silvermont"}, CK_Silvermont, FEATURE_SSE4_2, FeaturesSilvermont, 'c', false },
 296   { {"slm"}, CK_Silvermont, FEATURE_SSE4_2, FeaturesSilvermont, 'c', false },
 297   { {"atom_sse4_2"}, CK_Nehalem, FEATURE_SSE4_2, FeaturesNehalem, 'c', true },
 298   { {"atom_sse4_2_movbe"}, CK_Goldmont, FEATURE_SSE4_2, FeaturesGoldmont, 'd', true },
 299   { {"goldmont"}, CK_Goldmont, FEATURE_SSE4_2, FeaturesGoldmont, 'i', false },
 300   { {"goldmont-plus"}, CK_GoldmontPlus, FEATURE_SSE4_2, FeaturesGoldmontPlus, '\0', false },
 301   { {"goldmont_plus"}, CK_GoldmontPlus, FEATURE_SSE4_2, FeaturesGoldmontPlus, 'd', true },
 302   { {"tremont"}, CK_Tremont, FEATURE_SSE4_2, FeaturesTremont, 'd', false },
 303   // Nehalem microarchitecture based processors.
 304   { {"nehalem"}, CK_Nehalem, FEATURE_SSE4_2, FeaturesNehalem, 'P', false },
 305   { {"core_i7_sse4_2"}, CK_Nehalem, FEATURE_SSE4_2, FeaturesNehalem, 'P', true },
 306   { {"corei7"}, CK_Nehalem, FEATURE_SSE4_2, FeaturesNehalem, 'P', false },
 307   // Westmere microarchitecture based processors.
 308   { {"westmere"}, CK_Westmere, FEATURE_PCLMUL, FeaturesWestmere, 'Q', false },
 309   { {"core_aes_pclmulqdq"}, CK_Nehalem, FEATURE_SSE4_2, FeaturesNehalem, 'Q', true },
 310   // Sandy Bridge microarchitecture based processors.
 311   { {"sandybridge"}, CK_SandyBridge, FEATURE_AVX, FeaturesSandyBridge, 'R', false },
 312   { {"core_2nd_gen_avx"}, CK_SandyBridge, FEATURE_AVX, FeaturesSandyBridge, 'R', true },
 313   { {"corei7-avx"}, CK_SandyBridge, FEATURE_AVX, FeaturesSandyBridge, '\0', false },
 314   // Ivy Bridge microarchitecture based processors.
 315   { {"ivybridge"}, CK_IvyBridge, FEATURE_AVX, FeaturesIvyBridge, 'S', false },
 316   { {"core_3rd_gen_avx"}, CK_IvyBridge, FEATURE_AVX, FeaturesIvyBridge, 'S', true },
 317   { {"core-avx-i"}, CK_IvyBridge, FEATURE_AVX, FeaturesIvyBridge, '\0', false },
 318   // Haswell microarchitecture based processors.
 319   { {"haswell"}, CK_Haswell, FEATURE_AVX2, FeaturesHaswell, 'V', false },
 320   { {"core-avx2"}, CK_Haswell, FEATURE_AVX2, FeaturesHaswell, '\0', false },
 321   { {"core_4th_gen_avx"}, CK_Haswell, FEATURE_AVX2, FeaturesHaswell, 'V', true },
 322   { {"core_4th_gen_avx_tsx"}, CK_Haswell, FEATURE_AVX2, FeaturesHaswell, 'W', true },
 323   // Broadwell microarchitecture based processors.
 324   { {"broadwell"}, CK_Broadwell, FEATURE_AVX2, FeaturesBroadwell, 'X', false },
 325   { {"core_5th_gen_avx"}, CK_Broadwell, FEATURE_AVX2, FeaturesBroadwell, 'X', true },
 326   { {"core_5th_gen_avx_tsx"}, CK_Broadwell, FEATURE_AVX2, FeaturesBroadwell, 'Y', true },
 327   // Skylake client microarchitecture based processors.
 328   { {"skylake"}, CK_SkylakeClient, FEATURE_AVX2, FeaturesSkylakeClient, 'b', false },
 329   // Skylake server microarchitecture based processors.
 330   { {"skylake-avx512"}, CK_SkylakeServer, FEATURE_AVX512F, FeaturesSkylakeServer, '\0', false },
 331   { {"skx"}, CK_SkylakeServer, FEATURE_AVX512F, FeaturesSkylakeServer, 'a', false },
 332   { {"skylake_avx512"}, CK_SkylakeServer, FEATURE_AVX512F, FeaturesSkylakeServer, 'a', true },
 333   // Cascadelake Server microarchitecture based processors.
 334   { {"cascadelake"}, CK_Cascadelake, FEATURE_AVX512VNNI, FeaturesCascadeLake, 'o', false },
 335   // Cooperlake Server microarchitecture based processors.
 336   { {"cooperlake"}, CK_Cooperlake, FEATURE_AVX512BF16, FeaturesCooperLake, 'f', false },
 337   // Cannonlake client microarchitecture based processors.
 338   { {"cannonlake"}, CK_Cannonlake, FEATURE_AVX512VBMI, FeaturesCannonlake, 'e', false },
 339   // Icelake client microarchitecture based processors.
 340   { {"icelake-client"}, CK_IcelakeClient, FEATURE_AVX512VBMI2, FeaturesICLClient, '\0', false },
 341   { {"icelake_client"}, CK_IcelakeClient, FEATURE_AVX512VBMI2, FeaturesICLClient, 'k', true },
 342   // Rocketlake microarchitecture based processors.
 343   { {"rocketlake"}, CK_Rocketlake, FEATURE_AVX512VBMI2, FeaturesRocketlake, 'k', false },
 344   // Icelake server microarchitecture based processors.
 345   { {"icelake-server"}, CK_IcelakeServer, FEATURE_AVX512VBMI2, FeaturesICLServer, '\0', false },
 346   { {"icelake_server"}, CK_IcelakeServer, FEATURE_AVX512VBMI2, FeaturesICLServer, 'k', true },
 347   // Tigerlake microarchitecture based processors.
 348   { {"tigerlake"}, CK_Tigerlake, FEATURE_AVX512VP2INTERSECT, FeaturesTigerlake, 'l', false },
 349   // Sapphire Rapids microarchitecture based processors.
 350   { {"sapphirerapids"}, CK_SapphireRapids, FEATURE_AVX512FP16, FeaturesSapphireRapids, 'n', false },
 351   // Alderlake microarchitecture based processors.
 352   { {"alderlake"}, CK_Alderlake, FEATURE_AVX2, FeaturesAlderlake, 'p', false },
 353   // Raptorlake microarchitecture based processors.
 354   { {"raptorlake"}, CK_Raptorlake, FEATURE_AVX2, FeaturesAlderlake, 'p', false },
 355   // Meteorlake microarchitecture based processors.
 356   { {"meteorlake"}, CK_Meteorlake, FEATURE_AVX2, FeaturesAlderlake, 'p', false },
 357   // Arrowlake microarchitecture based processors.
 358   { {"arrowlake"}, CK_Arrowlake, FEATURE_AVX2, FeaturesSierraforest, 'p', false },
 359   { {"arrowlake-s"}, CK_ArrowlakeS, FEATURE_AVX2, FeaturesArrowlakeS, '\0', false },
 360   { {"arrowlake_s"}, CK_ArrowlakeS, FEATURE_AVX2, FeaturesArrowlakeS, 'p', true },
 361   // Lunarlake microarchitecture based processors.
 362   { {"lunarlake"}, CK_Lunarlake, FEATURE_AVX2, FeaturesArrowlakeS, 'p', false },
 363   // Gracemont microarchitecture based processors.
 364   { {"gracemont"}, CK_Gracemont, FEATURE_AVX2, FeaturesAlderlake, 'p', false },
 365   // Pantherlake microarchitecture based processors.
 366   { {"pantherlake"}, CK_Lunarlake, FEATURE_AVX2, FeaturesPantherlake, 'p', false },
 367   // Sierraforest microarchitecture based processors.
 368   { {"sierraforest"}, CK_Sierraforest, FEATURE_AVX2, FeaturesSierraforest, 'p', false },
 369   // Grandridge microarchitecture based processors.
 370   { {"grandridge"}, CK_Grandridge, FEATURE_AVX2, FeaturesSierraforest, 'p', false },
 371   // Granite Rapids microarchitecture based processors.
 372   { {"graniterapids"}, CK_Graniterapids, FEATURE_AVX512FP16, FeaturesGraniteRapids, 'n', false },
 373   // Granite Rapids D microarchitecture based processors.
 374   { {"graniterapids-d"}, CK_GraniterapidsD, FEATURE_AVX512FP16, FeaturesGraniteRapids | FeatureAMX_COMPLEX, '\0', false },
 375   { {"graniterapids_d"}, CK_GraniterapidsD, FEATURE_AVX512FP16, FeaturesGraniteRapids | FeatureAMX_COMPLEX, 'n', true },
 376   // Emerald Rapids microarchitecture based processors.
 377   { {"emeraldrapids"}, CK_Emeraldrapids, FEATURE_AVX512FP16, FeaturesSapphireRapids, 'n', false },
 378   // Clearwaterforest microarchitecture based processors.
 379   { {"clearwaterforest"}, CK_Lunarlake, FEATURE_AVX2, FeaturesClearwaterforest, 'p', false },
 380   // Knights Landing processor.
 381   { {"knl"}, CK_KNL, FEATURE_AVX512F, FeaturesKNL, 'Z', false },
 382   { {"mic_avx512"}, CK_KNL, FEATURE_AVX512F, FeaturesKNL, 'Z', true },
 383   // Knights Mill processor.
 384   { {"knm"}, CK_KNM, FEATURE_AVX5124FMAPS, FeaturesKNM, 'j', false },
 385   // Lakemont microarchitecture based processors.
 386   { {"lakemont"}, CK_Lakemont, ~0U, FeatureCMPXCHG8B, '\0', false },
 387   // K6 architecture processors.
 388   { {"k6"}, CK_K6, ~0U, FeaturesK6, '\0', false },
 389   { {"k6-2"}, CK_K6_2, ~0U, FeaturesK6 | Feature3DNOW, '\0', false },
 390   { {"k6-3"}, CK_K6_3, ~0U, FeaturesK6 | Feature3DNOW, '\0', false },
 391   // K7 architecture processors.
 392   { {"athlon"}, CK_Athlon, ~0U, FeaturesAthlon, '\0', false },
 393   { {"athlon-tbird"}, CK_Athlon, ~0U, FeaturesAthlon, '\0', false },
 394   { {"athlon-xp"}, CK_AthlonXP, ~0U, FeaturesAthlonXP, '\0', false },
 395   { {"athlon-mp"}, CK_AthlonXP, ~0U, FeaturesAthlonXP, '\0', false },
 396   { {"athlon-4"}, CK_AthlonXP, ~0U, FeaturesAthlonXP, '\0', false },
 397   // K8 architecture processors.
 398   { {"k8"}, CK_K8, ~0U, FeaturesK8, '\0', false },
 399   { {"athlon64"}, CK_K8, ~0U, FeaturesK8, '\0', false },
 400   { {"athlon-fx"}, CK_K8, ~0U, FeaturesK8, '\0', false },
 401   { {"opteron"}, CK_K8, ~0U, FeaturesK8, '\0', false },
 402   { {"k8-sse3"}, CK_K8SSE3, ~0U, FeaturesK8SSE3, '\0', false },
 403   { {"athlon64-sse3"}, CK_K8SSE3, ~0U, FeaturesK8SSE3, '\0', false },
 404   { {"opteron-sse3"}, CK_K8SSE3, ~0U, FeaturesK8SSE3, '\0', false },
 405   { {"amdfam10"}, CK_AMDFAM10, FEATURE_SSE4_A, FeaturesAMDFAM10, '\0', false },
 406   { {"barcelona"}, CK_AMDFAM10, FEATURE_SSE4_A, FeaturesAMDFAM10, '\0', false },
 407   // Bobcat architecture processors.
 408   { {"btver1"}, CK_BTVER1, FEATURE_SSE4_A, FeaturesBTVER1, '\0', false },
 409   { {"btver2"}, CK_BTVER2, FEATURE_BMI, FeaturesBTVER2, '\0', false },
 410   // Bulldozer architecture processors.
 411   { {"bdver1"}, CK_BDVER1, FEATURE_XOP, FeaturesBDVER1, '\0', false },
 412   { {"bdver2"}, CK_BDVER2, FEATURE_FMA, FeaturesBDVER2, '\0', false },
 413   { {"bdver3"}, CK_BDVER3, FEATURE_FMA, FeaturesBDVER3, '\0', false },
 414   { {"bdver4"}, CK_BDVER4, FEATURE_AVX2, FeaturesBDVER4, '\0', false },
 415   // Zen architecture processors.
 416   { {"znver1"}, CK_ZNVER1, FEATURE_AVX2, FeaturesZNVER1, '\0', false },
 417   { {"znver2"}, CK_ZNVER2, FEATURE_AVX2, FeaturesZNVER2, '\0', false },
 418   { {"znver3"}, CK_ZNVER3, FEATURE_AVX2, FeaturesZNVER3, '\0', false },
 419   { {"znver4"}, CK_ZNVER4, FEATURE_AVX512VBMI2, FeaturesZNVER4, '\0', false },
 420   // Generic 64-bit processor.
 421   { {"x86-64"}, CK_x86_64, FEATURE_SSE2 , FeaturesX86_64, '\0', false },
 422   { {"x86-64-v2"}, CK_x86_64_v2, FEATURE_SSE4_2 , FeaturesX86_64_V2, '\0', false },
 423   { {"x86-64-v3"}, CK_x86_64_v3, FEATURE_AVX2, FeaturesX86_64_V3, '\0', false },
 424   { {"x86-64-v4"}, CK_x86_64_v4, FEATURE_AVX512VL, FeaturesX86_64_V4, '\0', false },
 425   // Geode processors.
 426   { {"geode"}, CK_Geode, ~0U, FeaturesGeode, '\0', false },
 427 };
 428 // clang-format on
 429
 430 constexpr const char *NoTuneList[] = {"x86-64-v2", "x86-64-v3", "x86-64-v4"};
 431
 432 X86::CPUKind llvm::X86::parseArchX86(StringRef CPU, bool Only64Bit) {
 433   for (const auto &P : Processors)
 434     if (!P.OnlyForCPUDispatchSpecific && P.Name == CPU &&
 435         (P.Features[FEATURE_64BIT] || !Only64Bit))
 436       return P.Kind;
 437
 438   return CK_None;
 439 }
 440
 441 X86::CPUKind llvm::X86::parseTuneCPU(StringRef CPU, bool Only64Bit) {
 442   if (llvm::is_contained(NoTuneList, CPU))
 443     return CK_None;
 444   return parseArchX86(CPU, Only64Bit);
 445 }
 446
 447 void llvm::X86::fillValidCPUArchList(SmallVectorImpl<StringRef> &Values,
 448                                      bool Only64Bit) {
 449   for (const auto &P : Processors)
 450     if (!P.OnlyForCPUDispatchSpecific && !P.Name.empty() &&
 451         (P.Features[FEATURE_64BIT] || !Only64Bit))
 452       Values.emplace_back(P.Name);
 453 }
 454
 455 void llvm::X86::fillValidTuneCPUList(SmallVectorImpl<StringRef> &Values,
 456                                      bool Only64Bit) {
 457   for (const ProcInfo &P : Processors)
 458     if (!P.OnlyForCPUDispatchSpecific && !P.Name.empty() &&
 459         (P.Features[FEATURE_64BIT] || !Only64Bit) &&
 460         !llvm::is_contained(NoTuneList, P.Name))
 461       Values.emplace_back(P.Name);
 462 }
 463
 464 ProcessorFeatures llvm::X86::getKeyFeature(X86::CPUKind Kind) {
 465   // FIXME: Can we avoid a linear search here? The table might be sorted by
 466   // CPUKind so we could binary search?
 467   for (const auto &P : Processors) {
 468     if (P.Kind == Kind) {
 469       assert(P.KeyFeature != ~0U && "Processor does not have a key feature.");
 470       return static_cast<ProcessorFeatures>(P.KeyFeature);
 471     }
 472   }
 473
 474   llvm_unreachable("Unable to find CPU kind!");
 475 }
 476
 477 // Features with no dependencies.
 478 constexpr FeatureBitset ImpliedFeatures64BIT = {};
 479 constexpr FeatureBitset ImpliedFeaturesADX = {};
 480 constexpr FeatureBitset ImpliedFeaturesBMI = {};
 481 constexpr FeatureBitset ImpliedFeaturesBMI2 = {};
 482 constexpr FeatureBitset ImpliedFeaturesCLDEMOTE = {};
 483 constexpr FeatureBitset ImpliedFeaturesCLFLUSHOPT = {};
 484 constexpr FeatureBitset ImpliedFeaturesCLWB = {};
 485 constexpr FeatureBitset ImpliedFeaturesCLZERO = {};
 486 constexpr FeatureBitset ImpliedFeaturesCMOV = {};
 487 constexpr FeatureBitset ImpliedFeaturesCMPXCHG16B = {};
 488 constexpr FeatureBitset ImpliedFeaturesCMPXCHG8B = {};
 489 constexpr FeatureBitset ImpliedFeaturesCRC32 = {};
 490 constexpr FeatureBitset ImpliedFeaturesENQCMD = {};
 491 constexpr FeatureBitset ImpliedFeaturesFSGSBASE = {};
 492 constexpr FeatureBitset ImpliedFeaturesFXSR = {};
 493 constexpr FeatureBitset ImpliedFeaturesINVPCID = {};
 494 constexpr FeatureBitset ImpliedFeaturesLWP = {};
 495 constexpr FeatureBitset ImpliedFeaturesLZCNT = {};
 496 constexpr FeatureBitset ImpliedFeaturesMWAITX = {};
 497 constexpr FeatureBitset ImpliedFeaturesMOVBE = {};
 498 constexpr FeatureBitset ImpliedFeaturesMOVDIR64B = {};
 499 constexpr FeatureBitset ImpliedFeaturesMOVDIRI = {};
 500 constexpr FeatureBitset ImpliedFeaturesPCONFIG = {};
 501 constexpr FeatureBitset ImpliedFeaturesPOPCNT = {};
 502 constexpr FeatureBitset ImpliedFeaturesPKU = {};
 503 constexpr FeatureBitset ImpliedFeaturesPREFETCHWT1 = {};
 504 constexpr FeatureBitset ImpliedFeaturesPRFCHW = {};
 505 constexpr FeatureBitset ImpliedFeaturesPTWRITE = {};
 506 constexpr FeatureBitset ImpliedFeaturesRDPID = {};
 507 constexpr FeatureBitset ImpliedFeaturesRDPRU = {};
 508 constexpr FeatureBitset ImpliedFeaturesRDRND = {};
 509 constexpr FeatureBitset ImpliedFeaturesRDSEED = {};
 510 constexpr FeatureBitset ImpliedFeaturesRTM = {};
 511 constexpr FeatureBitset ImpliedFeaturesSAHF = {};
 512 constexpr FeatureBitset ImpliedFeaturesSERIALIZE = {};
 513 constexpr FeatureBitset ImpliedFeaturesSGX = {};
 514 constexpr FeatureBitset ImpliedFeaturesSHSTK = {};
 515 constexpr FeatureBitset ImpliedFeaturesTBM = {};
 516 constexpr FeatureBitset ImpliedFeaturesTSXLDTRK = {};
 517 constexpr FeatureBitset ImpliedFeaturesUINTR = {};
 518 constexpr FeatureBitset ImpliedFeaturesUSERMSR = {};
 519 constexpr FeatureBitset ImpliedFeaturesWAITPKG = {};
 520 constexpr FeatureBitset ImpliedFeaturesWBNOINVD = {};
 521 constexpr FeatureBitset ImpliedFeaturesVZEROUPPER = {};
 522 constexpr FeatureBitset ImpliedFeaturesX87 = {};
 523 constexpr FeatureBitset ImpliedFeaturesXSAVE = {};
 524
 525 // Not really CPU features, but need to be in the table because clang uses
 526 // target features to communicate them to the backend.
 527 constexpr FeatureBitset ImpliedFeaturesRETPOLINE_EXTERNAL_THUNK = {};
 528 constexpr FeatureBitset ImpliedFeaturesRETPOLINE_INDIRECT_BRANCHES = {};
 529 constexpr FeatureBitset ImpliedFeaturesRETPOLINE_INDIRECT_CALLS = {};
 530 constexpr FeatureBitset ImpliedFeaturesLVI_CFI = {};
 531 constexpr FeatureBitset ImpliedFeaturesLVI_LOAD_HARDENING = {};
 532
 533 // XSAVE features are dependent on basic XSAVE.
 534 constexpr FeatureBitset ImpliedFeaturesXSAVEC = FeatureXSAVE;
 535 constexpr FeatureBitset ImpliedFeaturesXSAVEOPT = FeatureXSAVE;
 536 constexpr FeatureBitset ImpliedFeaturesXSAVES = FeatureXSAVE;
 537
 538 // MMX->3DNOW->3DNOWA chain.
 539 constexpr FeatureBitset ImpliedFeaturesMMX = {};
 540 constexpr FeatureBitset ImpliedFeatures3DNOW = FeatureMMX;
 541 constexpr FeatureBitset ImpliedFeatures3DNOWA = Feature3DNOW;
 542
 543 // SSE/AVX/AVX512F chain.
 544 constexpr FeatureBitset ImpliedFeaturesSSE = {};
 545 constexpr FeatureBitset ImpliedFeaturesSSE2 = FeatureSSE;
 546 constexpr FeatureBitset ImpliedFeaturesSSE3 = FeatureSSE2;
 547 constexpr FeatureBitset ImpliedFeaturesSSSE3 = FeatureSSE3;
 548 constexpr FeatureBitset ImpliedFeaturesSSE4_1 = FeatureSSSE3;
 549 constexpr FeatureBitset ImpliedFeaturesSSE4_2 = FeatureSSE4_1;
 550 constexpr FeatureBitset ImpliedFeaturesAVX = FeatureSSE4_2;
 551 constexpr FeatureBitset ImpliedFeaturesAVX2 = FeatureAVX;
 552 constexpr FeatureBitset ImpliedFeaturesEVEX512 = {};
 553 constexpr FeatureBitset ImpliedFeaturesAVX512F =
 554     FeatureAVX2 | FeatureF16C | FeatureFMA;
 555
 556 // Vector extensions that build on SSE or AVX.
 557 constexpr FeatureBitset ImpliedFeaturesAES = FeatureSSE2;
 558 constexpr FeatureBitset ImpliedFeaturesF16C = FeatureAVX;
 559 constexpr FeatureBitset ImpliedFeaturesFMA = FeatureAVX;
 560 constexpr FeatureBitset ImpliedFeaturesGFNI = FeatureSSE2;
 561 constexpr FeatureBitset ImpliedFeaturesPCLMUL = FeatureSSE2;
 562 constexpr FeatureBitset ImpliedFeaturesSHA = FeatureSSE2;
 563 constexpr FeatureBitset ImpliedFeaturesVAES = FeatureAES | FeatureAVX2;
 564 constexpr FeatureBitset ImpliedFeaturesVPCLMULQDQ = FeatureAVX | FeaturePCLMUL;
 565 constexpr FeatureBitset ImpliedFeaturesSM3 = FeatureAVX;
 566 constexpr FeatureBitset ImpliedFeaturesSM4 = FeatureAVX2;
 567
 568 // AVX512 features.
 569 constexpr FeatureBitset ImpliedFeaturesAVX512CD = FeatureAVX512F;
 570 constexpr FeatureBitset ImpliedFeaturesAVX512BW = FeatureAVX512F;
 571 constexpr FeatureBitset ImpliedFeaturesAVX512DQ = FeatureAVX512F;
 572 constexpr FeatureBitset ImpliedFeaturesAVX512ER = FeatureAVX512F;
 573 constexpr FeatureBitset ImpliedFeaturesAVX512PF = FeatureAVX512F;
 574 constexpr FeatureBitset ImpliedFeaturesAVX512VL = FeatureAVX512F;
 575
 576 constexpr FeatureBitset ImpliedFeaturesAVX512BF16 = FeatureAVX512BW;
 577 constexpr FeatureBitset ImpliedFeaturesAVX512BITALG = FeatureAVX512BW;
 578 constexpr FeatureBitset ImpliedFeaturesAVX512IFMA = FeatureAVX512F;
 579 constexpr FeatureBitset ImpliedFeaturesAVX512VNNI = FeatureAVX512F;
 580 constexpr FeatureBitset ImpliedFeaturesAVX512VPOPCNTDQ = FeatureAVX512F;
 581 constexpr FeatureBitset ImpliedFeaturesAVX512VBMI = FeatureAVX512BW;
 582 constexpr FeatureBitset ImpliedFeaturesAVX512VBMI2 = FeatureAVX512BW;
 583 constexpr FeatureBitset ImpliedFeaturesAVX512VP2INTERSECT = FeatureAVX512F;
 584
 585 // FIXME: These two aren't really implemented and just exist in the feature
 586 // list for __builtin_cpu_supports. So omit their dependencies.
 587 constexpr FeatureBitset ImpliedFeaturesAVX5124FMAPS = {};
 588 constexpr FeatureBitset ImpliedFeaturesAVX5124VNNIW = {};
 589
 590 // SSE4_A->FMA4->XOP chain.
 591 constexpr FeatureBitset ImpliedFeaturesSSE4_A = FeatureSSE3;
 592 constexpr FeatureBitset ImpliedFeaturesFMA4 = FeatureAVX | FeatureSSE4_A;
 593 constexpr FeatureBitset ImpliedFeaturesXOP = FeatureFMA4;
 594
 595 // AMX Features
 596 constexpr FeatureBitset ImpliedFeaturesAMX_TILE = {};
 597 constexpr FeatureBitset ImpliedFeaturesAMX_BF16 = FeatureAMX_TILE;
 598 constexpr FeatureBitset ImpliedFeaturesAMX_FP16 = FeatureAMX_TILE;
 599 constexpr FeatureBitset ImpliedFeaturesAMX_INT8 = FeatureAMX_TILE;
 600 constexpr FeatureBitset ImpliedFeaturesAMX_COMPLEX = FeatureAMX_TILE;
 601 constexpr FeatureBitset ImpliedFeaturesHRESET = {};
 602
 603 constexpr FeatureBitset ImpliedFeaturesPREFETCHI = {};
 604 constexpr FeatureBitset ImpliedFeaturesCMPCCXADD = {};
 605 constexpr FeatureBitset ImpliedFeaturesRAOINT = {};
 606 constexpr FeatureBitset ImpliedFeaturesAVXVNNIINT16 = FeatureAVX2;
 607 constexpr FeatureBitset ImpliedFeaturesAVXVNNIINT8 = FeatureAVX2;
 608 constexpr FeatureBitset ImpliedFeaturesAVXIFMA = FeatureAVX2;
 609 constexpr FeatureBitset ImpliedFeaturesAVXNECONVERT = FeatureAVX2;
 610 constexpr FeatureBitset ImpliedFeaturesSHA512 = FeatureAVX2;
 611 constexpr FeatureBitset ImpliedFeaturesAVX512FP16 =
 612     FeatureAVX512BW | FeatureAVX512DQ | FeatureAVX512VL;
 613 // Key Locker Features
 614 constexpr FeatureBitset ImpliedFeaturesKL = FeatureSSE2;
 615 constexpr FeatureBitset ImpliedFeaturesWIDEKL = FeatureKL;
 616
 617 // AVXVNNI Features
 618 constexpr FeatureBitset ImpliedFeaturesAVXVNNI = FeatureAVX2;
 619
 620 // AVX10 Features
 621 constexpr FeatureBitset ImpliedFeaturesAVX10_1 =
 622     FeatureAVX512CD | FeatureAVX512VBMI | FeatureAVX512IFMA |
 623     FeatureAVX512VNNI | FeatureAVX512BF16 | FeatureAVX512VPOPCNTDQ |
 624     FeatureAVX512VBMI2 | FeatureAVX512BITALG | FeatureVAES | FeatureVPCLMULQDQ |
 625     FeatureAVX512FP16;
 626 constexpr FeatureBitset ImpliedFeaturesAVX10_1_512 =
 627     FeatureAVX10_1 | FeatureEVEX512;
 628
 629 // APX Features
 630 constexpr FeatureBitset ImpliedFeaturesEGPR = {};
 631 constexpr FeatureBitset ImpliedFeaturesPush2Pop2 = {};
 632 constexpr FeatureBitset ImpliedFeaturesPPX = {};
 633 constexpr FeatureBitset ImpliedFeaturesNDD = {};
 634 constexpr FeatureBitset ImpliedFeaturesCCMP = {};
 635 constexpr FeatureBitset ImpliedFeaturesCF = {};
 636
 637 constexpr FeatureInfo FeatureInfos[X86::CPU_FEATURE_MAX] = {
 638 #define X86_FEATURE(ENUM, STR) {{"+" STR}, ImpliedFeatures##ENUM},
 639 #include "llvm/TargetParser/X86TargetParser.def"
 640 };
 641
 642 void llvm::X86::getFeaturesForCPU(StringRef CPU,
 643                                   SmallVectorImpl<StringRef> &EnabledFeatures,
 644                                   bool NeedPlus) {
 645   auto I = llvm::find_if(Processors,
 646                          [&](const ProcInfo &P) { return P.Name == CPU; });
 647   assert(I != std::end(Processors) && "Processor not found!");
 648
 649   FeatureBitset Bits = I->Features;
 650
 651   // Remove the 64-bit feature which we only use to validate if a CPU can
 652   // be used with 64-bit mode.
 653   Bits &= ~Feature64BIT;
 654
 655   // Add the string version of all set bits.
 656   for (unsigned i = 0; i != CPU_FEATURE_MAX; ++i)
 657     if (Bits[i] && !FeatureInfos[i].getName(NeedPlus).empty())
 658       EnabledFeatures.push_back(FeatureInfos[i].getName(NeedPlus));
 659 }
 660
 661 // For each feature that is (transitively) implied by this feature, set it.
 662 static void getImpliedEnabledFeatures(FeatureBitset &Bits,
 663                                       const FeatureBitset &Implies) {
 664   // Fast path: Implies is often empty.
 665   if (!Implies.any())
 666     return;
 667   FeatureBitset Prev;
 668   Bits |= Implies;
 669   do {
 670     Prev = Bits;
 671     for (unsigned i = CPU_FEATURE_MAX; i;)
 672       if (Bits[--i])
 673         Bits |= FeatureInfos[i].ImpliedFeatures;
 674   } while (Prev != Bits);
 675 }
 676
 677 /// Create bit vector of features that are implied disabled if the feature
 678 /// passed in Value is disabled.
 679 static void getImpliedDisabledFeatures(FeatureBitset &Bits, unsigned Value) {
 680   // Check all features looking for any dependent on this feature. If we find
 681   // one, mark it and recursively find any feature that depend on it.
 682   FeatureBitset Prev;
 683   Bits.set(Value);
 684   do {
 685     Prev = Bits;
 686     for (unsigned i = 0; i != CPU_FEATURE_MAX; ++i)
 687       if ((FeatureInfos[i].ImpliedFeatures & Bits).any())
 688         Bits.set(i);
 689   } while (Prev != Bits);
 690 }
 691
 692 void llvm::X86::updateImpliedFeatures(
 693     StringRef Feature, bool Enabled,
 694     StringMap<bool> &Features) {
 695   auto I = llvm::find_if(FeatureInfos, [&](const FeatureInfo &FI) {
 696     return FI.getName() == Feature;
 697   });
 698   if (I == std::end(FeatureInfos)) {
 699     // FIXME: This shouldn't happen, but may not have all features in the table
 700     // yet.
 701     return;
 702   }
 703
 704   FeatureBitset ImpliedBits;
 705   if (Enabled)
 706     getImpliedEnabledFeatures(ImpliedBits, I->ImpliedFeatures);
 707   else
 708     getImpliedDisabledFeatures(ImpliedBits,
 709                                std::distance(std::begin(FeatureInfos), I));
 710
 711   // Update the map entry for all implied features.
 712   for (unsigned i = 0; i != CPU_FEATURE_MAX; ++i)
 713     if (ImpliedBits[i] && !FeatureInfos[i].getName().empty())
 714       Features[FeatureInfos[i].getName()] = Enabled;
 715 }
 716
 717 char llvm::X86::getCPUDispatchMangling(StringRef CPU) {
 718   auto I = llvm::find_if(Processors,
 719                          [&](const ProcInfo &P) { return P.Name == CPU; });
 720   assert(I != std::end(Processors) && "Processor not found!");
 721   assert(I->Mangling != '\0' && "Processor dooesn't support function multiversion!");
 722   return I->Mangling;
 723 }
 724
 725 bool llvm::X86::validateCPUSpecificCPUDispatch(StringRef Name) {
 726   auto I = llvm::find_if(Processors,
 727                          [&](const ProcInfo &P) { return P.Name == Name; });
 728   return I != std::end(Processors);
 729 }
 730
 731 std::array<uint32_t, 4>
 732 llvm::X86::getCpuSupportsMask(ArrayRef<StringRef> FeatureStrs) {
 733   // Processor features and mapping to processor feature value.
 734   std::array<uint32_t, 4> FeatureMask{};
 735   for (StringRef FeatureStr : FeatureStrs) {
 736     unsigned Feature = StringSwitch<unsigned>(FeatureStr)
 737 #define X86_FEATURE_COMPAT(ENUM, STR, PRIORITY)                                \
 738   .Case(STR, llvm::X86::FEATURE_##ENUM)
 739 #define X86_MICROARCH_LEVEL(ENUM, STR, PRIORITY)                               \
 740   .Case(STR, llvm::X86::FEATURE_##ENUM)
 741 #include "llvm/TargetParser/X86TargetParser.def"
 742         ;
 743     assert(Feature / 32 < FeatureMask.size());
 744     FeatureMask[Feature / 32] |= 1U << (Feature % 32);
 745   }
 746   return FeatureMask;
 747 }
 748
 749 unsigned llvm::X86::getFeaturePriority(ProcessorFeatures Feat) {
 750 #ifndef NDEBUG
 751   // Check that priorities are set properly in the .def file. We expect that
 752   // "compat" features are assigned non-duplicate consecutive priorities
 753   // starting from zero (0, 1, ..., num_features - 1).
 754 #define X86_FEATURE_COMPAT(ENUM, STR, PRIORITY) PRIORITY,
 755   unsigned Priorities[] = {
 756 #include "llvm/TargetParser/X86TargetParser.def"
 757   };
 758   std::array<unsigned, std::size(Priorities)> HelperList;
 759   std::iota(HelperList.begin(), HelperList.end(), 0);
 760   assert(std::is_permutation(HelperList.begin(), HelperList.end(),
 761                              std::begin(Priorities), std::end(Priorities)) &&
 762          "Priorities don't form consecutive range!");
 763 #endif
 764
 765   switch (Feat) {
 766 #define X86_FEATURE_COMPAT(ENUM, STR, PRIORITY)                                \
 767   case X86::FEATURE_##ENUM:                                                    \
 768     return PRIORITY;
 769 #include "llvm/TargetParser/X86TargetParser.def"
 770   default:
 771     llvm_unreachable("No Feature Priority for non-CPUSupports Features");
 772   }
 773 }