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, oland,hainan 77 GFX(700), // kaveri 78 GFX(701), // hawaii 79 GFX(702), // 290,290x,R390,R390x 80 GFX(703), // kabini mullins 81 GFX(704), // bonaire 82 GFX(801), // carrizo 83 GFX(802), // tonga,iceland 84 GFX(803), // fiji,polaris10 85 GFX(810), // stoney 86 GFX(900), // vega, instinct 87 GFX(902), GFX(904), GFX(906), GFX(908), GFX(909), 88 GFX(1010), GFX(1011), GFX(1012), GFX(1030), GFX(1031) 89 // clang-format on 90 }; 91 #undef SM 92 #undef SM2 93 #undef GFX 94 95 const char *CudaArchToString(CudaArch A) { 96 auto result = std::find_if( 97 std::begin(arch_names), std::end(arch_names), 98 [A](const CudaArchToStringMap &map) { return A == map.arch; }); 99 if (result == std::end(arch_names)) 100 return "unknown"; 101 return result->arch_name; 102 } 103 104 const char *CudaArchToVirtualArchString(CudaArch A) { 105 auto result = std::find_if( 106 std::begin(arch_names), std::end(arch_names), 107 [A](const CudaArchToStringMap &map) { return A == map.arch; }); 108 if (result == std::end(arch_names)) 109 return "unknown"; 110 return result->virtual_arch_name; 111 } 112 113 CudaArch StringToCudaArch(llvm::StringRef S) { 114 auto result = std::find_if( 115 std::begin(arch_names), std::end(arch_names), 116 [S](const CudaArchToStringMap &map) { return S == map.arch_name; }); 117 if (result == std::end(arch_names)) 118 return CudaArch::UNKNOWN; 119 return result->arch; 120 } 121 122 CudaVersion MinVersionForCudaArch(CudaArch A) { 123 if (A == CudaArch::UNKNOWN) 124 return CudaVersion::UNKNOWN; 125 126 // AMD GPUs do not depend on CUDA versions. 127 if (IsAMDGpuArch(A)) 128 return CudaVersion::CUDA_70; 129 130 switch (A) { 131 case CudaArch::SM_20: 132 case CudaArch::SM_21: 133 case CudaArch::SM_30: 134 case CudaArch::SM_32: 135 case CudaArch::SM_35: 136 case CudaArch::SM_37: 137 case CudaArch::SM_50: 138 case CudaArch::SM_52: 139 case CudaArch::SM_53: 140 return CudaVersion::CUDA_70; 141 case CudaArch::SM_60: 142 case CudaArch::SM_61: 143 case CudaArch::SM_62: 144 return CudaVersion::CUDA_80; 145 case CudaArch::SM_70: 146 return CudaVersion::CUDA_90; 147 case CudaArch::SM_72: 148 return CudaVersion::CUDA_91; 149 case CudaArch::SM_75: 150 return CudaVersion::CUDA_100; 151 case CudaArch::SM_80: 152 return CudaVersion::CUDA_110; 153 default: 154 llvm_unreachable("invalid enum"); 155 } 156 } 157 158 CudaVersion MaxVersionForCudaArch(CudaArch A) { 159 // AMD GPUs do not depend on CUDA versions. 160 if (IsAMDGpuArch(A)) 161 return CudaVersion::LATEST; 162 163 switch (A) { 164 case CudaArch::UNKNOWN: 165 return CudaVersion::UNKNOWN; 166 case CudaArch::SM_20: 167 case CudaArch::SM_21: 168 return CudaVersion::CUDA_80; 169 default: 170 return CudaVersion::LATEST; 171 } 172 } 173 174 CudaVersion ToCudaVersion(llvm::VersionTuple Version) { 175 int IVer = 176 Version.getMajor() * 10 + Version.getMinor().getValueOr(0); 177 switch(IVer) { 178 case 70: 179 return CudaVersion::CUDA_70; 180 case 75: 181 return CudaVersion::CUDA_75; 182 case 80: 183 return CudaVersion::CUDA_80; 184 case 90: 185 return CudaVersion::CUDA_90; 186 case 91: 187 return CudaVersion::CUDA_91; 188 case 92: 189 return CudaVersion::CUDA_92; 190 case 100: 191 return CudaVersion::CUDA_100; 192 case 101: 193 return CudaVersion::CUDA_101; 194 case 102: 195 return CudaVersion::CUDA_102; 196 case 110: 197 return CudaVersion::CUDA_110; 198 default: 199 return CudaVersion::UNKNOWN; 200 } 201 } 202 203 bool CudaFeatureEnabled(llvm::VersionTuple Version, CudaFeature Feature) { 204 return CudaFeatureEnabled(ToCudaVersion(Version), Feature); 205 } 206 207 bool CudaFeatureEnabled(CudaVersion Version, CudaFeature Feature) { 208 switch (Feature) { 209 case CudaFeature::CUDA_USES_NEW_LAUNCH: 210 return Version >= CudaVersion::CUDA_92; 211 case CudaFeature::CUDA_USES_FATBIN_REGISTER_END: 212 return Version >= CudaVersion::CUDA_101; 213 } 214 llvm_unreachable("Unknown CUDA feature."); 215 } 216 } // namespace clang 217