1 #include "clang/Basic/Cuda.h" 2 3 #include "llvm/ADT/StringRef.h" 4 #include "llvm/ADT/StringSwitch.h" 5 #include "llvm/ADT/Twine.h" 6 #include "llvm/Support/ErrorHandling.h" 7 #include "llvm/Support/VersionTuple.h" 8 9 namespace clang { 10 11 const char *CudaVersionToString(CudaVersion V) { 12 switch (V) { 13 case CudaVersion::UNKNOWN: 14 return "unknown"; 15 case CudaVersion::CUDA_70: 16 return "7.0"; 17 case CudaVersion::CUDA_75: 18 return "7.5"; 19 case CudaVersion::CUDA_80: 20 return "8.0"; 21 case CudaVersion::CUDA_90: 22 return "9.0"; 23 case CudaVersion::CUDA_91: 24 return "9.1"; 25 case CudaVersion::CUDA_92: 26 return "9.2"; 27 case CudaVersion::CUDA_100: 28 return "10.0"; 29 case CudaVersion::CUDA_101: 30 return "10.1"; 31 case CudaVersion::CUDA_102: 32 return "10.2"; 33 case CudaVersion::CUDA_110: 34 return "11.0"; 35 case CudaVersion::CUDA_111: 36 return "11.1"; 37 case CudaVersion::CUDA_112: 38 return "11.2"; 39 } 40 llvm_unreachable("invalid enum"); 41 } 42 43 CudaVersion CudaStringToVersion(const llvm::Twine &S) { 44 return llvm::StringSwitch<CudaVersion>(S.str()) 45 .Case("7.0", CudaVersion::CUDA_70) 46 .Case("7.5", CudaVersion::CUDA_75) 47 .Case("8.0", CudaVersion::CUDA_80) 48 .Case("9.0", CudaVersion::CUDA_90) 49 .Case("9.1", CudaVersion::CUDA_91) 50 .Case("9.2", CudaVersion::CUDA_92) 51 .Case("10.0", CudaVersion::CUDA_100) 52 .Case("10.1", CudaVersion::CUDA_101) 53 .Case("10.2", CudaVersion::CUDA_102) 54 .Case("11.0", CudaVersion::CUDA_110) 55 .Case("11.1", CudaVersion::CUDA_111) 56 .Case("11.2", CudaVersion::CUDA_112) 57 .Default(CudaVersion::UNKNOWN); 58 } 59 60 namespace { 61 struct CudaArchToStringMap { 62 CudaArch arch; 63 const char *arch_name; 64 const char *virtual_arch_name; 65 }; 66 } // namespace 67 68 #define SM2(sm, ca) \ 69 { CudaArch::SM_##sm, "sm_" #sm, ca } 70 #define SM(sm) SM2(sm, "compute_" #sm) 71 #define GFX(gpu) \ 72 { CudaArch::GFX##gpu, "gfx" #gpu, "compute_amdgcn" } 73 static const CudaArchToStringMap arch_names[] = { 74 // clang-format off 75 {CudaArch::UNUSED, "", ""}, 76 SM2(20, "compute_20"), SM2(21, "compute_20"), // Fermi 77 SM(30), SM(32), SM(35), SM(37), // Kepler 78 SM(50), SM(52), SM(53), // Maxwell 79 SM(60), SM(61), SM(62), // Pascal 80 SM(70), SM(72), // Volta 81 SM(75), // Turing 82 SM(80), SM(86), // Ampere 83 GFX(600), // gfx600 84 GFX(601), // gfx601 85 GFX(602), // gfx602 86 GFX(700), // gfx700 87 GFX(701), // gfx701 88 GFX(702), // gfx702 89 GFX(703), // gfx703 90 GFX(704), // gfx704 91 GFX(705), // gfx705 92 GFX(801), // gfx801 93 GFX(802), // gfx802 94 GFX(803), // gfx803 95 GFX(805), // gfx805 96 GFX(810), // gfx810 97 GFX(900), // gfx900 98 GFX(902), // gfx902 99 GFX(904), // gfx903 100 GFX(906), // gfx906 101 GFX(908), // gfx908 102 GFX(909), // gfx909 103 GFX(90a), // gfx90a 104 GFX(90c), // gfx90c 105 GFX(1010), // gfx1010 106 GFX(1011), // gfx1011 107 GFX(1012), // gfx1012 108 GFX(1013), // gfx1013 109 GFX(1030), // gfx1030 110 GFX(1031), // gfx1031 111 GFX(1032), // gfx1032 112 GFX(1033), // gfx1033 113 GFX(1034), // gfx1034 114 // clang-format on 115 }; 116 #undef SM 117 #undef SM2 118 #undef GFX 119 120 const char *CudaArchToString(CudaArch A) { 121 auto result = std::find_if( 122 std::begin(arch_names), std::end(arch_names), 123 [A](const CudaArchToStringMap &map) { return A == map.arch; }); 124 if (result == std::end(arch_names)) 125 return "unknown"; 126 return result->arch_name; 127 } 128 129 const char *CudaArchToVirtualArchString(CudaArch A) { 130 auto result = std::find_if( 131 std::begin(arch_names), std::end(arch_names), 132 [A](const CudaArchToStringMap &map) { return A == map.arch; }); 133 if (result == std::end(arch_names)) 134 return "unknown"; 135 return result->virtual_arch_name; 136 } 137 138 CudaArch StringToCudaArch(llvm::StringRef S) { 139 auto result = std::find_if( 140 std::begin(arch_names), std::end(arch_names), 141 [S](const CudaArchToStringMap &map) { return S == map.arch_name; }); 142 if (result == std::end(arch_names)) 143 return CudaArch::UNKNOWN; 144 return result->arch; 145 } 146 147 CudaVersion MinVersionForCudaArch(CudaArch A) { 148 if (A == CudaArch::UNKNOWN) 149 return CudaVersion::UNKNOWN; 150 151 // AMD GPUs do not depend on CUDA versions. 152 if (IsAMDGpuArch(A)) 153 return CudaVersion::CUDA_70; 154 155 switch (A) { 156 case CudaArch::SM_20: 157 case CudaArch::SM_21: 158 case CudaArch::SM_30: 159 case CudaArch::SM_32: 160 case CudaArch::SM_35: 161 case CudaArch::SM_37: 162 case CudaArch::SM_50: 163 case CudaArch::SM_52: 164 case CudaArch::SM_53: 165 return CudaVersion::CUDA_70; 166 case CudaArch::SM_60: 167 case CudaArch::SM_61: 168 case CudaArch::SM_62: 169 return CudaVersion::CUDA_80; 170 case CudaArch::SM_70: 171 return CudaVersion::CUDA_90; 172 case CudaArch::SM_72: 173 return CudaVersion::CUDA_91; 174 case CudaArch::SM_75: 175 return CudaVersion::CUDA_100; 176 case CudaArch::SM_80: 177 return CudaVersion::CUDA_110; 178 case CudaArch::SM_86: 179 return CudaVersion::CUDA_111; 180 default: 181 llvm_unreachable("invalid enum"); 182 } 183 } 184 185 CudaVersion MaxVersionForCudaArch(CudaArch A) { 186 // AMD GPUs do not depend on CUDA versions. 187 if (IsAMDGpuArch(A)) 188 return CudaVersion::LATEST; 189 190 switch (A) { 191 case CudaArch::UNKNOWN: 192 return CudaVersion::UNKNOWN; 193 case CudaArch::SM_20: 194 case CudaArch::SM_21: 195 return CudaVersion::CUDA_80; 196 default: 197 return CudaVersion::LATEST; 198 } 199 } 200 201 CudaVersion ToCudaVersion(llvm::VersionTuple Version) { 202 int IVer = 203 Version.getMajor() * 10 + Version.getMinor().getValueOr(0); 204 switch(IVer) { 205 case 70: 206 return CudaVersion::CUDA_70; 207 case 75: 208 return CudaVersion::CUDA_75; 209 case 80: 210 return CudaVersion::CUDA_80; 211 case 90: 212 return CudaVersion::CUDA_90; 213 case 91: 214 return CudaVersion::CUDA_91; 215 case 92: 216 return CudaVersion::CUDA_92; 217 case 100: 218 return CudaVersion::CUDA_100; 219 case 101: 220 return CudaVersion::CUDA_101; 221 case 102: 222 return CudaVersion::CUDA_102; 223 case 110: 224 return CudaVersion::CUDA_110; 225 case 111: 226 return CudaVersion::CUDA_111; 227 case 112: 228 return CudaVersion::CUDA_112; 229 default: 230 return CudaVersion::UNKNOWN; 231 } 232 } 233 234 bool CudaFeatureEnabled(llvm::VersionTuple Version, CudaFeature Feature) { 235 return CudaFeatureEnabled(ToCudaVersion(Version), Feature); 236 } 237 238 bool CudaFeatureEnabled(CudaVersion Version, CudaFeature Feature) { 239 switch (Feature) { 240 case CudaFeature::CUDA_USES_NEW_LAUNCH: 241 return Version >= CudaVersion::CUDA_92; 242 case CudaFeature::CUDA_USES_FATBIN_REGISTER_END: 243 return Version >= CudaVersion::CUDA_101; 244 } 245 llvm_unreachable("Unknown CUDA feature."); 246 } 247 } // namespace clang 248