1 #include "clang/Basic/Cuda.h" 2 3 #include "llvm/ADT/StringRef.h" 4 #include "llvm/ADT/Twine.h" 5 #include "llvm/Support/ErrorHandling.h" 6 #include "llvm/Support/VersionTuple.h" 7 8 namespace clang { 9 10 struct CudaVersionMapEntry { 11 const char *Name; 12 CudaVersion Version; 13 llvm::VersionTuple TVersion; 14 }; 15 #define CUDA_ENTRY(major, minor) \ 16 { \ 17 #major "." #minor, CudaVersion::CUDA_##major##minor, \ 18 llvm::VersionTuple(major, minor) \ 19 } 20 21 static const CudaVersionMapEntry CudaNameVersionMap[] = { 22 CUDA_ENTRY(7, 0), 23 CUDA_ENTRY(7, 5), 24 CUDA_ENTRY(8, 0), 25 CUDA_ENTRY(9, 0), 26 CUDA_ENTRY(9, 1), 27 CUDA_ENTRY(9, 2), 28 CUDA_ENTRY(10, 0), 29 CUDA_ENTRY(10, 1), 30 CUDA_ENTRY(10, 2), 31 CUDA_ENTRY(11, 0), 32 CUDA_ENTRY(11, 1), 33 CUDA_ENTRY(11, 2), 34 CUDA_ENTRY(11, 3), 35 CUDA_ENTRY(11, 4), 36 CUDA_ENTRY(11, 5), 37 CUDA_ENTRY(11, 6), 38 CUDA_ENTRY(11, 7), 39 CUDA_ENTRY(11, 8), 40 CUDA_ENTRY(12, 0), 41 CUDA_ENTRY(12, 1), 42 CUDA_ENTRY(12, 2), 43 CUDA_ENTRY(12, 3), 44 CUDA_ENTRY(12, 4), 45 CUDA_ENTRY(12, 5), 46 CUDA_ENTRY(12, 6), 47 {"", CudaVersion::NEW, llvm::VersionTuple(std::numeric_limits<int>::max())}, 48 {"unknown", CudaVersion::UNKNOWN, {}} // End of list tombstone. 49 }; 50 #undef CUDA_ENTRY 51 52 const char *CudaVersionToString(CudaVersion V) { 53 for (auto *I = CudaNameVersionMap; I->Version != CudaVersion::UNKNOWN; ++I) 54 if (I->Version == V) 55 return I->Name; 56 57 return CudaVersionToString(CudaVersion::UNKNOWN); 58 } 59 60 CudaVersion CudaStringToVersion(const llvm::Twine &S) { 61 std::string VS = S.str(); 62 for (auto *I = CudaNameVersionMap; I->Version != CudaVersion::UNKNOWN; ++I) 63 if (I->Name == VS) 64 return I->Version; 65 return CudaVersion::UNKNOWN; 66 } 67 68 CudaVersion ToCudaVersion(llvm::VersionTuple Version) { 69 for (auto *I = CudaNameVersionMap; I->Version != CudaVersion::UNKNOWN; ++I) 70 if (I->TVersion == Version) 71 return I->Version; 72 return CudaVersion::UNKNOWN; 73 } 74 75 namespace { 76 struct OffloadArchToStringMap { 77 OffloadArch arch; 78 const char *arch_name; 79 const char *virtual_arch_name; 80 }; 81 } // namespace 82 83 #define SM2(sm, ca) {OffloadArch::SM_##sm, "sm_" #sm, ca} 84 #define SM(sm) SM2(sm, "compute_" #sm) 85 #define GFX(gpu) {OffloadArch::GFX##gpu, "gfx" #gpu, "compute_amdgcn"} 86 static const OffloadArchToStringMap arch_names[] = { 87 // clang-format off 88 {OffloadArch::UNUSED, "", ""}, 89 SM2(20, "compute_20"), SM2(21, "compute_20"), // Fermi 90 SM(30), {OffloadArch::SM_32_, "sm_32", "compute_32"}, SM(35), SM(37), // Kepler 91 SM(50), SM(52), SM(53), // Maxwell 92 SM(60), SM(61), SM(62), // Pascal 93 SM(70), SM(72), // Volta 94 SM(75), // Turing 95 SM(80), SM(86), // Ampere 96 SM(87), // Jetson/Drive AGX Orin 97 SM(89), // Ada Lovelace 98 SM(90), // Hopper 99 SM(90a), // Hopper 100 SM(100), // Blackwell 101 GFX(600), // gfx600 102 GFX(601), // gfx601 103 GFX(602), // gfx602 104 GFX(700), // gfx700 105 GFX(701), // gfx701 106 GFX(702), // gfx702 107 GFX(703), // gfx703 108 GFX(704), // gfx704 109 GFX(705), // gfx705 110 GFX(801), // gfx801 111 GFX(802), // gfx802 112 GFX(803), // gfx803 113 GFX(805), // gfx805 114 GFX(810), // gfx810 115 {OffloadArch::GFX9_GENERIC, "gfx9-generic", "compute_amdgcn"}, 116 GFX(900), // gfx900 117 GFX(902), // gfx902 118 GFX(904), // gfx903 119 GFX(906), // gfx906 120 GFX(908), // gfx908 121 GFX(909), // gfx909 122 GFX(90a), // gfx90a 123 GFX(90c), // gfx90c 124 {OffloadArch::GFX9_4_GENERIC, "gfx9-4-generic", "compute_amdgcn"}, 125 GFX(940), // gfx940 126 GFX(941), // gfx941 127 GFX(942), // gfx942 128 GFX(950), // gfx950 129 {OffloadArch::GFX10_1_GENERIC, "gfx10-1-generic", "compute_amdgcn"}, 130 GFX(1010), // gfx1010 131 GFX(1011), // gfx1011 132 GFX(1012), // gfx1012 133 GFX(1013), // gfx1013 134 {OffloadArch::GFX10_3_GENERIC, "gfx10-3-generic", "compute_amdgcn"}, 135 GFX(1030), // gfx1030 136 GFX(1031), // gfx1031 137 GFX(1032), // gfx1032 138 GFX(1033), // gfx1033 139 GFX(1034), // gfx1034 140 GFX(1035), // gfx1035 141 GFX(1036), // gfx1036 142 {OffloadArch::GFX11_GENERIC, "gfx11-generic", "compute_amdgcn"}, 143 GFX(1100), // gfx1100 144 GFX(1101), // gfx1101 145 GFX(1102), // gfx1102 146 GFX(1103), // gfx1103 147 GFX(1150), // gfx1150 148 GFX(1151), // gfx1151 149 GFX(1152), // gfx1152 150 GFX(1153), // gfx1153 151 {OffloadArch::GFX12_GENERIC, "gfx12-generic", "compute_amdgcn"}, 152 GFX(1200), // gfx1200 153 GFX(1201), // gfx1201 154 {OffloadArch::AMDGCNSPIRV, "amdgcnspirv", "compute_amdgcn"}, 155 {OffloadArch::Generic, "generic", ""}, 156 // clang-format on 157 }; 158 #undef SM 159 #undef SM2 160 #undef GFX 161 162 const char *OffloadArchToString(OffloadArch A) { 163 auto result = std::find_if( 164 std::begin(arch_names), std::end(arch_names), 165 [A](const OffloadArchToStringMap &map) { return A == map.arch; }); 166 if (result == std::end(arch_names)) 167 return "unknown"; 168 return result->arch_name; 169 } 170 171 const char *OffloadArchToVirtualArchString(OffloadArch A) { 172 auto result = std::find_if( 173 std::begin(arch_names), std::end(arch_names), 174 [A](const OffloadArchToStringMap &map) { return A == map.arch; }); 175 if (result == std::end(arch_names)) 176 return "unknown"; 177 return result->virtual_arch_name; 178 } 179 180 OffloadArch StringToOffloadArch(llvm::StringRef S) { 181 auto result = std::find_if( 182 std::begin(arch_names), std::end(arch_names), 183 [S](const OffloadArchToStringMap &map) { return S == map.arch_name; }); 184 if (result == std::end(arch_names)) 185 return OffloadArch::UNKNOWN; 186 return result->arch; 187 } 188 189 CudaVersion MinVersionForOffloadArch(OffloadArch A) { 190 if (A == OffloadArch::UNKNOWN) 191 return CudaVersion::UNKNOWN; 192 193 // AMD GPUs do not depend on CUDA versions. 194 if (IsAMDOffloadArch(A)) 195 return CudaVersion::CUDA_70; 196 197 switch (A) { 198 case OffloadArch::SM_20: 199 case OffloadArch::SM_21: 200 case OffloadArch::SM_30: 201 case OffloadArch::SM_32_: 202 case OffloadArch::SM_35: 203 case OffloadArch::SM_37: 204 case OffloadArch::SM_50: 205 case OffloadArch::SM_52: 206 case OffloadArch::SM_53: 207 return CudaVersion::CUDA_70; 208 case OffloadArch::SM_60: 209 case OffloadArch::SM_61: 210 case OffloadArch::SM_62: 211 return CudaVersion::CUDA_80; 212 case OffloadArch::SM_70: 213 return CudaVersion::CUDA_90; 214 case OffloadArch::SM_72: 215 return CudaVersion::CUDA_91; 216 case OffloadArch::SM_75: 217 return CudaVersion::CUDA_100; 218 case OffloadArch::SM_80: 219 return CudaVersion::CUDA_110; 220 case OffloadArch::SM_86: 221 return CudaVersion::CUDA_111; 222 case OffloadArch::SM_87: 223 return CudaVersion::CUDA_114; 224 case OffloadArch::SM_89: 225 case OffloadArch::SM_90: 226 return CudaVersion::CUDA_118; 227 case OffloadArch::SM_90a: 228 return CudaVersion::CUDA_120; 229 case OffloadArch::SM_100: 230 return CudaVersion::NEW; // TODO: use specific CUDA version once it's 231 // public. 232 default: 233 llvm_unreachable("invalid enum"); 234 } 235 } 236 237 CudaVersion MaxVersionForOffloadArch(OffloadArch A) { 238 // AMD GPUs do not depend on CUDA versions. 239 if (IsAMDOffloadArch(A)) 240 return CudaVersion::NEW; 241 242 switch (A) { 243 case OffloadArch::UNKNOWN: 244 return CudaVersion::UNKNOWN; 245 case OffloadArch::SM_20: 246 case OffloadArch::SM_21: 247 return CudaVersion::CUDA_80; 248 case OffloadArch::SM_30: 249 case OffloadArch::SM_32_: 250 return CudaVersion::CUDA_102; 251 case OffloadArch::SM_35: 252 case OffloadArch::SM_37: 253 return CudaVersion::CUDA_118; 254 default: 255 return CudaVersion::NEW; 256 } 257 } 258 259 bool CudaFeatureEnabled(llvm::VersionTuple Version, CudaFeature Feature) { 260 return CudaFeatureEnabled(ToCudaVersion(Version), Feature); 261 } 262 263 bool CudaFeatureEnabled(CudaVersion Version, CudaFeature Feature) { 264 switch (Feature) { 265 case CudaFeature::CUDA_USES_NEW_LAUNCH: 266 return Version >= CudaVersion::CUDA_92; 267 case CudaFeature::CUDA_USES_FATBIN_REGISTER_END: 268 return Version >= CudaVersion::CUDA_101; 269 } 270 llvm_unreachable("Unknown CUDA feature."); 271 } 272 } // namespace clang 273