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 } 36 llvm_unreachable("invalid enum"); 37 } 38 39 CudaVersion CudaStringToVersion(const llvm::Twine &S) { 40 return llvm::StringSwitch<CudaVersion>(S.str()) 41 .Case("7.0", CudaVersion::CUDA_70) 42 .Case("7.5", CudaVersion::CUDA_75) 43 .Case("8.0", CudaVersion::CUDA_80) 44 .Case("9.0", CudaVersion::CUDA_90) 45 .Case("9.1", CudaVersion::CUDA_91) 46 .Case("9.2", CudaVersion::CUDA_92) 47 .Case("10.0", CudaVersion::CUDA_100) 48 .Case("10.1", CudaVersion::CUDA_101) 49 .Case("10.2", CudaVersion::CUDA_102) 50 .Case("11.0", CudaVersion::CUDA_110) 51 .Default(CudaVersion::UNKNOWN); 52 } 53 54 struct CudaArchToStringMap { 55 CudaArch arch; 56 const char *arch_name; 57 const char *virtual_arch_name; 58 }; 59 60 #define SM2(sm, ca) \ 61 { CudaArch::SM_##sm, "sm_" #sm, ca } 62 #define SM(sm) SM2(sm, "compute_" #sm) 63 #define GFX(gpu) \ 64 { CudaArch::GFX##gpu, "gfx" #gpu, "compute_amdgcn" } 65 CudaArchToStringMap arch_names[] = { 66 // clang-format off 67 {CudaArch::UNUSED, "", ""}, 68 SM2(20, "compute_20"), SM2(21, "compute_20"), // Fermi 69 SM(30), SM(32), SM(35), SM(37), // Kepler 70 SM(50), SM(52), SM(53), // Maxwell 71 SM(60), SM(61), SM(62), // Pascal 72 SM(70), SM(72), // Volta 73 SM(75), // Turing 74 SM(80), // Ampere 75 GFX(600), // tahiti 76 GFX(601), // pitcairn, verde 77 GFX(602), // oland, hainan 78 GFX(700), // kaveri 79 GFX(701), // hawaii 80 GFX(702), // 290,290x,R390,R390x 81 GFX(703), // kabini mullins 82 GFX(704), // bonaire 83 GFX(705), 84 GFX(801), // carrizo 85 GFX(802), // tonga,iceland 86 GFX(803), // fiji,polaris10 87 GFX(805), // tongapro 88 GFX(810), // stoney 89 GFX(900), // vega, instinct 90 GFX(902), GFX(904), GFX(906), GFX(908), GFX(909), 91 GFX(1010), GFX(1011), GFX(1012), GFX(1030), GFX(1031) 92 // clang-format on 93 }; 94 #undef SM 95 #undef SM2 96 #undef GFX 97 98 const char *CudaArchToString(CudaArch A) { 99 auto result = std::find_if( 100 std::begin(arch_names), std::end(arch_names), 101 [A](const CudaArchToStringMap &map) { return A == map.arch; }); 102 if (result == std::end(arch_names)) 103 return "unknown"; 104 return result->arch_name; 105 } 106 107 const char *CudaArchToVirtualArchString(CudaArch A) { 108 auto result = std::find_if( 109 std::begin(arch_names), std::end(arch_names), 110 [A](const CudaArchToStringMap &map) { return A == map.arch; }); 111 if (result == std::end(arch_names)) 112 return "unknown"; 113 return result->virtual_arch_name; 114 } 115 116 CudaArch StringToCudaArch(llvm::StringRef S) { 117 auto result = std::find_if( 118 std::begin(arch_names), std::end(arch_names), 119 [S](const CudaArchToStringMap &map) { return S == map.arch_name; }); 120 if (result == std::end(arch_names)) 121 return CudaArch::UNKNOWN; 122 return result->arch; 123 } 124 125 CudaVersion MinVersionForCudaArch(CudaArch A) { 126 if (A == CudaArch::UNKNOWN) 127 return CudaVersion::UNKNOWN; 128 129 // AMD GPUs do not depend on CUDA versions. 130 if (IsAMDGpuArch(A)) 131 return CudaVersion::CUDA_70; 132 133 switch (A) { 134 case CudaArch::SM_20: 135 case CudaArch::SM_21: 136 case CudaArch::SM_30: 137 case CudaArch::SM_32: 138 case CudaArch::SM_35: 139 case CudaArch::SM_37: 140 case CudaArch::SM_50: 141 case CudaArch::SM_52: 142 case CudaArch::SM_53: 143 return CudaVersion::CUDA_70; 144 case CudaArch::SM_60: 145 case CudaArch::SM_61: 146 case CudaArch::SM_62: 147 return CudaVersion::CUDA_80; 148 case CudaArch::SM_70: 149 return CudaVersion::CUDA_90; 150 case CudaArch::SM_72: 151 return CudaVersion::CUDA_91; 152 case CudaArch::SM_75: 153 return CudaVersion::CUDA_100; 154 case CudaArch::SM_80: 155 return CudaVersion::CUDA_110; 156 default: 157 llvm_unreachable("invalid enum"); 158 } 159 } 160 161 CudaVersion MaxVersionForCudaArch(CudaArch A) { 162 // AMD GPUs do not depend on CUDA versions. 163 if (IsAMDGpuArch(A)) 164 return CudaVersion::LATEST; 165 166 switch (A) { 167 case CudaArch::UNKNOWN: 168 return CudaVersion::UNKNOWN; 169 case CudaArch::SM_20: 170 case CudaArch::SM_21: 171 return CudaVersion::CUDA_80; 172 default: 173 return CudaVersion::LATEST; 174 } 175 } 176 177 CudaVersion ToCudaVersion(llvm::VersionTuple Version) { 178 int IVer = 179 Version.getMajor() * 10 + Version.getMinor().getValueOr(0); 180 switch(IVer) { 181 case 70: 182 return CudaVersion::CUDA_70; 183 case 75: 184 return CudaVersion::CUDA_75; 185 case 80: 186 return CudaVersion::CUDA_80; 187 case 90: 188 return CudaVersion::CUDA_90; 189 case 91: 190 return CudaVersion::CUDA_91; 191 case 92: 192 return CudaVersion::CUDA_92; 193 case 100: 194 return CudaVersion::CUDA_100; 195 case 101: 196 return CudaVersion::CUDA_101; 197 case 102: 198 return CudaVersion::CUDA_102; 199 case 110: 200 return CudaVersion::CUDA_110; 201 default: 202 return CudaVersion::UNKNOWN; 203 } 204 } 205 206 bool CudaFeatureEnabled(llvm::VersionTuple Version, CudaFeature Feature) { 207 return CudaFeatureEnabled(ToCudaVersion(Version), Feature); 208 } 209 210 bool CudaFeatureEnabled(CudaVersion Version, CudaFeature Feature) { 211 switch (Feature) { 212 case CudaFeature::CUDA_USES_NEW_LAUNCH: 213 return Version >= CudaVersion::CUDA_92; 214 case CudaFeature::CUDA_USES_FATBIN_REGISTER_END: 215 return Version >= CudaVersion::CUDA_101; 216 } 217 llvm_unreachable("Unknown CUDA feature."); 218 } 219 } // namespace clang 220