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 GFX(940), // gfx940 125 GFX(941), // gfx941 126 GFX(942), // gfx942 127 {OffloadArch::GFX10_1_GENERIC, "gfx10-1-generic", "compute_amdgcn"}, 128 GFX(1010), // gfx1010 129 GFX(1011), // gfx1011 130 GFX(1012), // gfx1012 131 GFX(1013), // gfx1013 132 {OffloadArch::GFX10_3_GENERIC, "gfx10-3-generic", "compute_amdgcn"}, 133 GFX(1030), // gfx1030 134 GFX(1031), // gfx1031 135 GFX(1032), // gfx1032 136 GFX(1033), // gfx1033 137 GFX(1034), // gfx1034 138 GFX(1035), // gfx1035 139 GFX(1036), // gfx1036 140 {OffloadArch::GFX11_GENERIC, "gfx11-generic", "compute_amdgcn"}, 141 GFX(1100), // gfx1100 142 GFX(1101), // gfx1101 143 GFX(1102), // gfx1102 144 GFX(1103), // gfx1103 145 GFX(1150), // gfx1150 146 GFX(1151), // gfx1151 147 GFX(1152), // gfx1152 148 {OffloadArch::GFX12_GENERIC, "gfx12-generic", "compute_amdgcn"}, 149 GFX(1200), // gfx1200 150 GFX(1201), // gfx1201 151 {OffloadArch::AMDGCNSPIRV, "amdgcnspirv", "compute_amdgcn"}, 152 {OffloadArch::Generic, "generic", ""}, 153 // clang-format on 154 }; 155 #undef SM 156 #undef SM2 157 #undef GFX 158 159 const char *OffloadArchToString(OffloadArch A) { 160 auto result = std::find_if( 161 std::begin(arch_names), std::end(arch_names), 162 [A](const OffloadArchToStringMap &map) { return A == map.arch; }); 163 if (result == std::end(arch_names)) 164 return "unknown"; 165 return result->arch_name; 166 } 167 168 const char *OffloadArchToVirtualArchString(OffloadArch A) { 169 auto result = std::find_if( 170 std::begin(arch_names), std::end(arch_names), 171 [A](const OffloadArchToStringMap &map) { return A == map.arch; }); 172 if (result == std::end(arch_names)) 173 return "unknown"; 174 return result->virtual_arch_name; 175 } 176 177 OffloadArch StringToOffloadArch(llvm::StringRef S) { 178 auto result = std::find_if( 179 std::begin(arch_names), std::end(arch_names), 180 [S](const OffloadArchToStringMap &map) { return S == map.arch_name; }); 181 if (result == std::end(arch_names)) 182 return OffloadArch::UNKNOWN; 183 return result->arch; 184 } 185 186 CudaVersion MinVersionForOffloadArch(OffloadArch A) { 187 if (A == OffloadArch::UNKNOWN) 188 return CudaVersion::UNKNOWN; 189 190 // AMD GPUs do not depend on CUDA versions. 191 if (IsAMDOffloadArch(A)) 192 return CudaVersion::CUDA_70; 193 194 switch (A) { 195 case OffloadArch::SM_20: 196 case OffloadArch::SM_21: 197 case OffloadArch::SM_30: 198 case OffloadArch::SM_32_: 199 case OffloadArch::SM_35: 200 case OffloadArch::SM_37: 201 case OffloadArch::SM_50: 202 case OffloadArch::SM_52: 203 case OffloadArch::SM_53: 204 return CudaVersion::CUDA_70; 205 case OffloadArch::SM_60: 206 case OffloadArch::SM_61: 207 case OffloadArch::SM_62: 208 return CudaVersion::CUDA_80; 209 case OffloadArch::SM_70: 210 return CudaVersion::CUDA_90; 211 case OffloadArch::SM_72: 212 return CudaVersion::CUDA_91; 213 case OffloadArch::SM_75: 214 return CudaVersion::CUDA_100; 215 case OffloadArch::SM_80: 216 return CudaVersion::CUDA_110; 217 case OffloadArch::SM_86: 218 return CudaVersion::CUDA_111; 219 case OffloadArch::SM_87: 220 return CudaVersion::CUDA_114; 221 case OffloadArch::SM_89: 222 case OffloadArch::SM_90: 223 return CudaVersion::CUDA_118; 224 case OffloadArch::SM_90a: 225 return CudaVersion::CUDA_120; 226 case OffloadArch::SM_100: 227 return CudaVersion::NEW; // TODO: use specific CUDA version once it's 228 // public. 229 default: 230 llvm_unreachable("invalid enum"); 231 } 232 } 233 234 CudaVersion MaxVersionForOffloadArch(OffloadArch A) { 235 // AMD GPUs do not depend on CUDA versions. 236 if (IsAMDOffloadArch(A)) 237 return CudaVersion::NEW; 238 239 switch (A) { 240 case OffloadArch::UNKNOWN: 241 return CudaVersion::UNKNOWN; 242 case OffloadArch::SM_20: 243 case OffloadArch::SM_21: 244 return CudaVersion::CUDA_80; 245 case OffloadArch::SM_30: 246 case OffloadArch::SM_32_: 247 return CudaVersion::CUDA_102; 248 case OffloadArch::SM_35: 249 case OffloadArch::SM_37: 250 return CudaVersion::CUDA_118; 251 default: 252 return CudaVersion::NEW; 253 } 254 } 255 256 bool CudaFeatureEnabled(llvm::VersionTuple Version, CudaFeature Feature) { 257 return CudaFeatureEnabled(ToCudaVersion(Version), Feature); 258 } 259 260 bool CudaFeatureEnabled(CudaVersion Version, CudaFeature Feature) { 261 switch (Feature) { 262 case CudaFeature::CUDA_USES_NEW_LAUNCH: 263 return Version >= CudaVersion::CUDA_92; 264 case CudaFeature::CUDA_USES_FATBIN_REGISTER_END: 265 return Version >= CudaVersion::CUDA_101; 266 } 267 llvm_unreachable("Unknown CUDA feature."); 268 } 269 } // namespace clang 270