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 {"", CudaVersion::NEW, llvm::VersionTuple(std::numeric_limits<int>::max())}, 41 {"unknown", CudaVersion::UNKNOWN, {}} // End of list tombstone. 42 }; 43 #undef CUDA_ENTRY 44 45 const char *CudaVersionToString(CudaVersion V) { 46 for (auto *I = CudaNameVersionMap; I->Version != CudaVersion::UNKNOWN; ++I) 47 if (I->Version == V) 48 return I->Name; 49 50 return CudaVersionToString(CudaVersion::UNKNOWN); 51 } 52 53 CudaVersion CudaStringToVersion(const llvm::Twine &S) { 54 std::string VS = S.str(); 55 for (auto *I = CudaNameVersionMap; I->Version != CudaVersion::UNKNOWN; ++I) 56 if (I->Name == VS) 57 return I->Version; 58 return CudaVersion::UNKNOWN; 59 } 60 61 CudaVersion ToCudaVersion(llvm::VersionTuple Version) { 62 for (auto *I = CudaNameVersionMap; I->Version != CudaVersion::UNKNOWN; ++I) 63 if (I->TVersion == Version) 64 return I->Version; 65 return CudaVersion::UNKNOWN; 66 } 67 68 namespace { 69 struct CudaArchToStringMap { 70 CudaArch arch; 71 const char *arch_name; 72 const char *virtual_arch_name; 73 }; 74 } // namespace 75 76 #define SM2(sm, ca) \ 77 { CudaArch::SM_##sm, "sm_" #sm, ca } 78 #define SM(sm) SM2(sm, "compute_" #sm) 79 #define GFX(gpu) \ 80 { CudaArch::GFX##gpu, "gfx" #gpu, "compute_amdgcn" } 81 static const CudaArchToStringMap arch_names[] = { 82 // clang-format off 83 {CudaArch::UNUSED, "", ""}, 84 SM2(20, "compute_20"), SM2(21, "compute_20"), // Fermi 85 SM(30), SM(32), SM(35), SM(37), // Kepler 86 SM(50), SM(52), SM(53), // Maxwell 87 SM(60), SM(61), SM(62), // Pascal 88 SM(70), SM(72), // Volta 89 SM(75), // Turing 90 SM(80), SM(86), // Ampere 91 SM(87), // Jetson/Drive AGX Orin 92 SM(89), // Ada Lovelace 93 SM(90), // Hopper 94 GFX(600), // gfx600 95 GFX(601), // gfx601 96 GFX(602), // gfx602 97 GFX(700), // gfx700 98 GFX(701), // gfx701 99 GFX(702), // gfx702 100 GFX(703), // gfx703 101 GFX(704), // gfx704 102 GFX(705), // gfx705 103 GFX(801), // gfx801 104 GFX(802), // gfx802 105 GFX(803), // gfx803 106 GFX(805), // gfx805 107 GFX(810), // gfx810 108 GFX(900), // gfx900 109 GFX(902), // gfx902 110 GFX(904), // gfx903 111 GFX(906), // gfx906 112 GFX(908), // gfx908 113 GFX(909), // gfx909 114 GFX(90a), // gfx90a 115 GFX(90c), // gfx90c 116 GFX(940), // gfx940 117 GFX(1010), // gfx1010 118 GFX(1011), // gfx1011 119 GFX(1012), // gfx1012 120 GFX(1013), // gfx1013 121 GFX(1030), // gfx1030 122 GFX(1031), // gfx1031 123 GFX(1032), // gfx1032 124 GFX(1033), // gfx1033 125 GFX(1034), // gfx1034 126 GFX(1035), // gfx1035 127 GFX(1036), // gfx1036 128 GFX(1100), // gfx1100 129 GFX(1101), // gfx1101 130 GFX(1102), // gfx1102 131 GFX(1103), // gfx1103 132 {CudaArch::Generic, "generic", ""}, 133 // clang-format on 134 }; 135 #undef SM 136 #undef SM2 137 #undef GFX 138 139 const char *CudaArchToString(CudaArch A) { 140 auto result = std::find_if( 141 std::begin(arch_names), std::end(arch_names), 142 [A](const CudaArchToStringMap &map) { return A == map.arch; }); 143 if (result == std::end(arch_names)) 144 return "unknown"; 145 return result->arch_name; 146 } 147 148 const char *CudaArchToVirtualArchString(CudaArch A) { 149 auto result = std::find_if( 150 std::begin(arch_names), std::end(arch_names), 151 [A](const CudaArchToStringMap &map) { return A == map.arch; }); 152 if (result == std::end(arch_names)) 153 return "unknown"; 154 return result->virtual_arch_name; 155 } 156 157 CudaArch StringToCudaArch(llvm::StringRef S) { 158 auto result = std::find_if( 159 std::begin(arch_names), std::end(arch_names), 160 [S](const CudaArchToStringMap &map) { return S == map.arch_name; }); 161 if (result == std::end(arch_names)) 162 return CudaArch::UNKNOWN; 163 return result->arch; 164 } 165 166 CudaVersion MinVersionForCudaArch(CudaArch A) { 167 if (A == CudaArch::UNKNOWN) 168 return CudaVersion::UNKNOWN; 169 170 // AMD GPUs do not depend on CUDA versions. 171 if (IsAMDGpuArch(A)) 172 return CudaVersion::CUDA_70; 173 174 switch (A) { 175 case CudaArch::SM_20: 176 case CudaArch::SM_21: 177 case CudaArch::SM_30: 178 case CudaArch::SM_32: 179 case CudaArch::SM_35: 180 case CudaArch::SM_37: 181 case CudaArch::SM_50: 182 case CudaArch::SM_52: 183 case CudaArch::SM_53: 184 return CudaVersion::CUDA_70; 185 case CudaArch::SM_60: 186 case CudaArch::SM_61: 187 case CudaArch::SM_62: 188 return CudaVersion::CUDA_80; 189 case CudaArch::SM_70: 190 return CudaVersion::CUDA_90; 191 case CudaArch::SM_72: 192 return CudaVersion::CUDA_91; 193 case CudaArch::SM_75: 194 return CudaVersion::CUDA_100; 195 case CudaArch::SM_80: 196 return CudaVersion::CUDA_110; 197 case CudaArch::SM_86: 198 return CudaVersion::CUDA_111; 199 case CudaArch::SM_87: 200 return CudaVersion::CUDA_114; 201 case CudaArch::SM_89: 202 case CudaArch::SM_90: 203 return CudaVersion::CUDA_118; 204 default: 205 llvm_unreachable("invalid enum"); 206 } 207 } 208 209 CudaVersion MaxVersionForCudaArch(CudaArch A) { 210 // AMD GPUs do not depend on CUDA versions. 211 if (IsAMDGpuArch(A)) 212 return CudaVersion::NEW; 213 214 switch (A) { 215 case CudaArch::UNKNOWN: 216 return CudaVersion::UNKNOWN; 217 case CudaArch::SM_20: 218 case CudaArch::SM_21: 219 return CudaVersion::CUDA_80; 220 case CudaArch::SM_30: 221 return CudaVersion::CUDA_110; 222 default: 223 return CudaVersion::NEW; 224 } 225 } 226 227 bool CudaFeatureEnabled(llvm::VersionTuple Version, CudaFeature Feature) { 228 return CudaFeatureEnabled(ToCudaVersion(Version), Feature); 229 } 230 231 bool CudaFeatureEnabled(CudaVersion Version, CudaFeature Feature) { 232 switch (Feature) { 233 case CudaFeature::CUDA_USES_NEW_LAUNCH: 234 return Version >= CudaVersion::CUDA_92; 235 case CudaFeature::CUDA_USES_FATBIN_REGISTER_END: 236 return Version >= CudaVersion::CUDA_101; 237 } 238 llvm_unreachable("Unknown CUDA feature."); 239 } 240 } // namespace clang 241