lib/Support/TargetParser.cpp

   1 //===-- TargetParser - Parser for target 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 hardware features such as
  10 // FPU/CPU/ARCH names as well as specific support such as HDIV, etc.
  11 //
  12 //===----------------------------------------------------------------------===//
  13
  14 #include "llvm/Support/ARMBuildAttributes.h"
  15 #include "llvm/Support/TargetParser.h"
  16 #include "llvm/ADT/ArrayRef.h"
  17 #include "llvm/ADT/StringSwitch.h"
  18 #include "llvm/ADT/Twine.h"
  19
  20 using namespace llvm;
  21 using namespace AMDGPU;
  22
  23 namespace {
  24
  25 struct GPUInfo {
  26   StringLiteral Name;
  27   StringLiteral CanonicalName;
  28   AMDGPU::GPUKind Kind;
  29   unsigned Features;
  30 };
  31
  32 constexpr GPUInfo R600GPUs[26] = {
  33   // Name       Canonical    Kind        Features
  34   //            Name
  35   {{"r600"},    {"r600"},    GK_R600,    FEATURE_NONE },
  36   {{"rv630"},   {"r600"},    GK_R600,    FEATURE_NONE },
  37   {{"rv635"},   {"r600"},    GK_R600,    FEATURE_NONE },
  38   {{"r630"},    {"r630"},    GK_R630,    FEATURE_NONE },
  39   {{"rs780"},   {"rs880"},   GK_RS880,   FEATURE_NONE },
  40   {{"rs880"},   {"rs880"},   GK_RS880,   FEATURE_NONE },
  41   {{"rv610"},   {"rs880"},   GK_RS880,   FEATURE_NONE },
  42   {{"rv620"},   {"rs880"},   GK_RS880,   FEATURE_NONE },
  43   {{"rv670"},   {"rv670"},   GK_RV670,   FEATURE_NONE },
  44   {{"rv710"},   {"rv710"},   GK_RV710,   FEATURE_NONE },
  45   {{"rv730"},   {"rv730"},   GK_RV730,   FEATURE_NONE },
  46   {{"rv740"},   {"rv770"},   GK_RV770,   FEATURE_NONE },
  47   {{"rv770"},   {"rv770"},   GK_RV770,   FEATURE_NONE },
  48   {{"cedar"},   {"cedar"},   GK_CEDAR,   FEATURE_NONE },
  49   {{"palm"},    {"cedar"},   GK_CEDAR,   FEATURE_NONE },
  50   {{"cypress"}, {"cypress"}, GK_CYPRESS, FEATURE_FMA  },
  51   {{"hemlock"}, {"cypress"}, GK_CYPRESS, FEATURE_FMA  },
  52   {{"juniper"}, {"juniper"}, GK_JUNIPER, FEATURE_NONE },
  53   {{"redwood"}, {"redwood"}, GK_REDWOOD, FEATURE_NONE },
  54   {{"sumo"},    {"sumo"},    GK_SUMO,    FEATURE_NONE },
  55   {{"sumo2"},   {"sumo"},    GK_SUMO,    FEATURE_NONE },
  56   {{"barts"},   {"barts"},   GK_BARTS,   FEATURE_NONE },
  57   {{"caicos"},  {"caicos"},  GK_CAICOS,  FEATURE_NONE },
  58   {{"aruba"},   {"cayman"},  GK_CAYMAN,  FEATURE_FMA  },
  59   {{"cayman"},  {"cayman"},  GK_CAYMAN,  FEATURE_FMA  },
  60   {{"turks"},   {"turks"},   GK_TURKS,   FEATURE_NONE }
  61 };
  62
  63 // This table should be sorted by the value of GPUKind
  64 // Don't bother listing the implicitly true features
  65 constexpr GPUInfo AMDGCNGPUs[37] = {
  66   // Name         Canonical    Kind        Features
  67   //              Name
  68   {{"gfx600"},    {"gfx600"},  GK_GFX600,  FEATURE_FAST_FMA_F32},
  69   {{"tahiti"},    {"gfx600"},  GK_GFX600,  FEATURE_FAST_FMA_F32},
  70   {{"gfx601"},    {"gfx601"},  GK_GFX601,  FEATURE_NONE},
  71   {{"hainan"},    {"gfx601"},  GK_GFX601,  FEATURE_NONE},
  72   {{"oland"},     {"gfx601"},  GK_GFX601,  FEATURE_NONE},
  73   {{"pitcairn"},  {"gfx601"},  GK_GFX601,  FEATURE_NONE},
  74   {{"verde"},     {"gfx601"},  GK_GFX601,  FEATURE_NONE},
  75   {{"gfx700"},    {"gfx700"},  GK_GFX700,  FEATURE_NONE},
  76   {{"kaveri"},    {"gfx700"},  GK_GFX700,  FEATURE_NONE},
  77   {{"gfx701"},    {"gfx701"},  GK_GFX701,  FEATURE_FAST_FMA_F32},
  78   {{"hawaii"},    {"gfx701"},  GK_GFX701,  FEATURE_FAST_FMA_F32},
  79   {{"gfx702"},    {"gfx702"},  GK_GFX702,  FEATURE_FAST_FMA_F32},
  80   {{"gfx703"},    {"gfx703"},  GK_GFX703,  FEATURE_NONE},
  81   {{"kabini"},    {"gfx703"},  GK_GFX703,  FEATURE_NONE},
  82   {{"mullins"},   {"gfx703"},  GK_GFX703,  FEATURE_NONE},
  83   {{"gfx704"},    {"gfx704"},  GK_GFX704,  FEATURE_NONE},
  84   {{"bonaire"},   {"gfx704"},  GK_GFX704,  FEATURE_NONE},
  85   {{"gfx801"},    {"gfx801"},  GK_GFX801,  FEATURE_FAST_FMA_F32|FEATURE_FAST_DENORMAL_F32},
  86   {{"carrizo"},   {"gfx801"},  GK_GFX801,  FEATURE_FAST_FMA_F32|FEATURE_FAST_DENORMAL_F32},
  87   {{"gfx802"},    {"gfx802"},  GK_GFX802,  FEATURE_FAST_DENORMAL_F32},
  88   {{"iceland"},   {"gfx802"},  GK_GFX802,  FEATURE_FAST_DENORMAL_F32},
  89   {{"tonga"},     {"gfx802"},  GK_GFX802,  FEATURE_FAST_DENORMAL_F32},
  90   {{"gfx803"},    {"gfx803"},  GK_GFX803,  FEATURE_FAST_DENORMAL_F32},
  91   {{"fiji"},      {"gfx803"},  GK_GFX803,  FEATURE_FAST_DENORMAL_F32},
  92   {{"polaris10"}, {"gfx803"},  GK_GFX803,  FEATURE_FAST_DENORMAL_F32},
  93   {{"polaris11"}, {"gfx803"},  GK_GFX803,  FEATURE_FAST_DENORMAL_F32},
  94   {{"gfx810"},    {"gfx810"},  GK_GFX810,  FEATURE_FAST_DENORMAL_F32},
  95   {{"stoney"},    {"gfx810"},  GK_GFX810,  FEATURE_FAST_DENORMAL_F32},
  96   {{"gfx900"},    {"gfx900"},  GK_GFX900,  FEATURE_FAST_FMA_F32|FEATURE_FAST_DENORMAL_F32},
  97   {{"gfx902"},    {"gfx902"},  GK_GFX902,  FEATURE_FAST_FMA_F32|FEATURE_FAST_DENORMAL_F32},
  98   {{"gfx904"},    {"gfx904"},  GK_GFX904,  FEATURE_FAST_FMA_F32|FEATURE_FAST_DENORMAL_F32},
  99   {{"gfx906"},    {"gfx906"},  GK_GFX906,  FEATURE_FAST_FMA_F32|FEATURE_FAST_DENORMAL_F32},
 100   {{"gfx908"},    {"gfx908"},  GK_GFX908,  FEATURE_FAST_FMA_F32|FEATURE_FAST_DENORMAL_F32},
 101   {{"gfx909"},    {"gfx909"},  GK_GFX909,  FEATURE_FAST_FMA_F32|FEATURE_FAST_DENORMAL_F32},
 102   {{"gfx1010"},   {"gfx1010"}, GK_GFX1010, FEATURE_FAST_FMA_F32|FEATURE_FAST_DENORMAL_F32},
 103   {{"gfx1011"},   {"gfx1011"}, GK_GFX1011, FEATURE_FAST_FMA_F32|FEATURE_FAST_DENORMAL_F32},
 104   {{"gfx1012"},   {"gfx1012"}, GK_GFX1012, FEATURE_FAST_FMA_F32|FEATURE_FAST_DENORMAL_F32},
 105 };
 106
 107 const GPUInfo *getArchEntry(AMDGPU::GPUKind AK, ArrayRef<GPUInfo> Table) {
 108   GPUInfo Search = { {""}, {""}, AK, AMDGPU::FEATURE_NONE };
 109
 110   auto I = std::lower_bound(Table.begin(), Table.end(), Search,
 111     [](const GPUInfo &A, const GPUInfo &B) {
 112       return A.Kind < B.Kind;
 113     });
 114
 115   if (I == Table.end())
 116     return nullptr;
 117   return I;
 118 }
 119
 120 } // namespace
 121
 122 StringRef llvm::AMDGPU::getArchNameAMDGCN(GPUKind AK) {
 123   if (const auto *Entry = getArchEntry(AK, AMDGCNGPUs))
 124     return Entry->CanonicalName;
 125   return "";
 126 }
 127
 128 StringRef llvm::AMDGPU::getArchNameR600(GPUKind AK) {
 129   if (const auto *Entry = getArchEntry(AK, R600GPUs))
 130     return Entry->CanonicalName;
 131   return "";
 132 }
 133
 134 AMDGPU::GPUKind llvm::AMDGPU::parseArchAMDGCN(StringRef CPU) {
 135   for (const auto C : AMDGCNGPUs) {
 136     if (CPU == C.Name)
 137       return C.Kind;
 138   }
 139
 140   return AMDGPU::GPUKind::GK_NONE;
 141 }
 142
 143 AMDGPU::GPUKind llvm::AMDGPU::parseArchR600(StringRef CPU) {
 144   for (const auto C : R600GPUs) {
 145     if (CPU == C.Name)
 146       return C.Kind;
 147   }
 148
 149   return AMDGPU::GPUKind::GK_NONE;
 150 }
 151
 152 unsigned AMDGPU::getArchAttrAMDGCN(GPUKind AK) {
 153   if (const auto *Entry = getArchEntry(AK, AMDGCNGPUs))
 154     return Entry->Features;
 155   return FEATURE_NONE;
 156 }
 157
 158 unsigned AMDGPU::getArchAttrR600(GPUKind AK) {
 159   if (const auto *Entry = getArchEntry(AK, R600GPUs))
 160     return Entry->Features;
 161   return FEATURE_NONE;
 162 }
 163
 164 void AMDGPU::fillValidArchListAMDGCN(SmallVectorImpl<StringRef> &Values) {
 165   // XXX: Should this only report unique canonical names?
 166   for (const auto C : AMDGCNGPUs)
 167     Values.push_back(C.Name);
 168 }
 169
 170 void AMDGPU::fillValidArchListR600(SmallVectorImpl<StringRef> &Values) {
 171   for (const auto C : R600GPUs)
 172     Values.push_back(C.Name);
 173 }
 174
 175 AMDGPU::IsaVersion AMDGPU::getIsaVersion(StringRef GPU) {
 176   AMDGPU::GPUKind AK = parseArchAMDGCN(GPU);
 177   if (AK == AMDGPU::GPUKind::GK_NONE) {
 178     if (GPU == "generic-hsa")
 179       return {7, 0, 0};
 180     if (GPU == "generic")
 181       return {6, 0, 0};
 182     return {0, 0, 0};
 183   }
 184
 185   switch (AK) {
 186   case GK_GFX600:  return {6, 0, 0};
 187   case GK_GFX601:  return {6, 0, 1};
 188   case GK_GFX700:  return {7, 0, 0};
 189   case GK_GFX701:  return {7, 0, 1};
 190   case GK_GFX702:  return {7, 0, 2};
 191   case GK_GFX703:  return {7, 0, 3};
 192   case GK_GFX704:  return {7, 0, 4};
 193   case GK_GFX801:  return {8, 0, 1};
 194   case GK_GFX802:  return {8, 0, 2};
 195   case GK_GFX803:  return {8, 0, 3};
 196   case GK_GFX810:  return {8, 1, 0};
 197   case GK_GFX900:  return {9, 0, 0};
 198   case GK_GFX902:  return {9, 0, 2};
 199   case GK_GFX904:  return {9, 0, 4};
 200   case GK_GFX906:  return {9, 0, 6};
 201   case GK_GFX908:  return {9, 0, 8};
 202   case GK_GFX909:  return {9, 0, 9};
 203   case GK_GFX1010: return {10, 1, 0};
 204   case GK_GFX1011: return {10, 1, 1};
 205   case GK_GFX1012: return {10, 1, 2};
 206   default:         return {0, 0, 0};
 207   }
 208 }