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#include "clang/Basic/Cuda.h"
#include "llvm/ADT/StringRef.h"
#include "llvm/ADT/StringSwitch.h"
#include "llvm/ADT/Twine.h"
#include "llvm/Support/ErrorHandling.h"
#include "llvm/Support/VersionTuple.h"
namespace clang {
const char *CudaVersionToString(CudaVersion V) {
switch (V) {
case CudaVersion::UNKNOWN:
return "unknown";
case CudaVersion::CUDA_70:
return "7.0";
case CudaVersion::CUDA_75:
return "7.5";
case CudaVersion::CUDA_80:
return "8.0";
case CudaVersion::CUDA_90:
return "9.0";
case CudaVersion::CUDA_91:
return "9.1";
case CudaVersion::CUDA_92:
return "9.2";
case CudaVersion::CUDA_100:
return "10.0";
case CudaVersion::CUDA_101:
return "10.1";
case CudaVersion::CUDA_102:
return "10.2";
case CudaVersion::CUDA_110:
return "11.0";
}
llvm_unreachable("invalid enum");
}
CudaVersion CudaStringToVersion(const llvm::Twine &S) {
return llvm::StringSwitch<CudaVersion>(S.str())
.Case("7.0", CudaVersion::CUDA_70)
.Case("7.5", CudaVersion::CUDA_75)
.Case("8.0", CudaVersion::CUDA_80)
.Case("9.0", CudaVersion::CUDA_90)
.Case("9.1", CudaVersion::CUDA_91)
.Case("9.2", CudaVersion::CUDA_92)
.Case("10.0", CudaVersion::CUDA_100)
.Case("10.1", CudaVersion::CUDA_101)
.Case("10.2", CudaVersion::CUDA_102)
.Case("11.0", CudaVersion::CUDA_110)
.Default(CudaVersion::UNKNOWN);
}
struct CudaArchToStringMap {
CudaArch arch;
const char *arch_name;
const char *virtual_arch_name;
};
#define SM2(sm, ca) \
{ CudaArch::SM_##sm, "sm_" #sm, ca }
#define SM(sm) SM2(sm, "compute_" #sm)
#define GFX(gpu) \
{ CudaArch::GFX##gpu, "gfx" #gpu, "compute_amdgcn" }
CudaArchToStringMap arch_names[] = {
// clang-format off
SM2(20, "compute_20"), SM2(21, "compute_20"), // Fermi
SM(30), SM(32), SM(35), SM(37), // Kepler
SM(50), SM(52), SM(53), // Maxwell
SM(60), SM(61), SM(62), // Pascal
SM(70), SM(72), // Volta
SM(75), // Turing
SM(80), // Ampere
GFX(600), // tahiti
GFX(601), // pitcairn, verde, oland,hainan
GFX(700), // kaveri
GFX(701), // hawaii
GFX(702), // 290,290x,R390,R390x
GFX(703), // kabini mullins
GFX(704), // bonaire
GFX(801), // carrizo
GFX(802), // tonga,iceland
GFX(803), // fiji,polaris10
GFX(810), // stoney
GFX(900), // vega, instinct
GFX(902), GFX(904), GFX(906), GFX(908), GFX(909),
GFX(1010), GFX(1011), GFX(1012),
// clang-format on
};
#undef SM
#undef SM2
#undef GFX
const char *CudaArchToString(CudaArch A) {
auto result = std::find_if(
std::begin(arch_names), std::end(arch_names),
[A](const CudaArchToStringMap &map) { return A == map.arch; });
if (result == std::end(arch_names))
return "unknown";
return result->arch_name;
}
const char *CudaArchToVirtualArchString(CudaArch A) {
auto result = std::find_if(
std::begin(arch_names), std::end(arch_names),
[A](const CudaArchToStringMap &map) { return A == map.arch; });
if (result == std::end(arch_names))
return "unknown";
return result->virtual_arch_name;
}
CudaArch StringToCudaArch(llvm::StringRef S) {
auto result = std::find_if(
std::begin(arch_names), std::end(arch_names),
[S](const CudaArchToStringMap &map) { return S == map.arch_name; });
if (result == std::end(arch_names))
return CudaArch::UNKNOWN;
return result->arch;
}
CudaVersion MinVersionForCudaArch(CudaArch A) {
if (A == CudaArch::UNKNOWN)
return CudaVersion::UNKNOWN;
// AMD GPUs do not depend on CUDA versions.
if (IsAMDGpuArch(A))
return CudaVersion::CUDA_70;
switch (A) {
case CudaArch::SM_20:
case CudaArch::SM_21:
case CudaArch::SM_30:
case CudaArch::SM_32:
case CudaArch::SM_35:
case CudaArch::SM_37:
case CudaArch::SM_50:
case CudaArch::SM_52:
case CudaArch::SM_53:
return CudaVersion::CUDA_70;
case CudaArch::SM_60:
case CudaArch::SM_61:
case CudaArch::SM_62:
return CudaVersion::CUDA_80;
case CudaArch::SM_70:
return CudaVersion::CUDA_90;
case CudaArch::SM_72:
return CudaVersion::CUDA_91;
case CudaArch::SM_75:
return CudaVersion::CUDA_100;
case CudaArch::SM_80:
return CudaVersion::CUDA_110;
default:
llvm_unreachable("invalid enum");
}
}
CudaVersion MaxVersionForCudaArch(CudaArch A) {
// AMD GPUs do not depend on CUDA versions.
if (IsAMDGpuArch(A))
return CudaVersion::LATEST;
switch (A) {
case CudaArch::UNKNOWN:
return CudaVersion::UNKNOWN;
case CudaArch::SM_20:
case CudaArch::SM_21:
return CudaVersion::CUDA_80;
default:
return CudaVersion::LATEST;
}
}
CudaVersion ToCudaVersion(llvm::VersionTuple Version) {
int IVer =
Version.getMajor() * 10 + Version.getMinor().getValueOr(0);
switch(IVer) {
case 70:
return CudaVersion::CUDA_70;
case 75:
return CudaVersion::CUDA_75;
case 80:
return CudaVersion::CUDA_80;
case 90:
return CudaVersion::CUDA_90;
case 91:
return CudaVersion::CUDA_91;
case 92:
return CudaVersion::CUDA_92;
case 100:
return CudaVersion::CUDA_100;
case 101:
return CudaVersion::CUDA_101;
case 102:
return CudaVersion::CUDA_102;
case 110:
return CudaVersion::CUDA_110;
default:
return CudaVersion::UNKNOWN;
}
}
bool CudaFeatureEnabled(llvm::VersionTuple Version, CudaFeature Feature) {
return CudaFeatureEnabled(ToCudaVersion(Version), Feature);
}
bool CudaFeatureEnabled(CudaVersion Version, CudaFeature Feature) {
switch (Feature) {
case CudaFeature::CUDA_USES_NEW_LAUNCH:
return Version >= CudaVersion::CUDA_92;
case CudaFeature::CUDA_USES_FATBIN_REGISTER_END:
return Version >= CudaVersion::CUDA_101;
}
llvm_unreachable("Unknown CUDA feature.");
}
} // namespace clang
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