static std::string getX86TargetCPU(const llvm::Triple &triple)
{
// Select the default CPU if none was given (or detection failed).
// Intel Macs are relatively recent, take advantage of that.
if (triple.isOSDarwin())
return triple.isArch64Bit() ? "core2" : "yonah";
// Everything else goes to x86-64 in 64-bit mode.
if (triple.isArch64Bit())
return "x86-64";
if (triple.getOSName().startswith("haiku"))
return "i586";
if (triple.getOSName().startswith("openbsd"))
return "i486";
if (triple.getOSName().startswith("bitrig"))
return "i686";
if (triple.getOSName().startswith("freebsd"))
return "i486";
if (triple.getOSName().startswith("netbsd"))
return "i486";
#if LDC_LLVM_VER >= 302
// All x86 devices running Android have core2 as their common
// denominator. This makes a better choice than pentium4.
if (triple.getEnvironment() == llvm::Triple::Android)
return "core2";
#endif
// Fallback to p4.
return "pentium4";
}
WebAssembly::WebAssembly(const Driver &D, const llvm::Triple &Triple,
const llvm::opt::ArgList &Args)
: ToolChain(D, Triple, Args) {
assert(Triple.isArch32Bit() != Triple.isArch64Bit());
getFilePaths().push_back(
getDriver().SysRoot + "/lib" + (Triple.isArch32Bit() ? "32" : "64"));
}
WebAssembly::WebAssembly(const Driver &D, const llvm::Triple &Triple,
const llvm::opt::ArgList &Args)
: ToolChain(D, Triple, Args) {
assert(Triple.isArch32Bit() != Triple.isArch64Bit());
getProgramPaths().push_back(getDriver().getInstalledDir());
getFilePaths().push_back(getDriver().SysRoot + "/lib");
}
SanitizerKind swift::parseSanitizerArgValues(const llvm::opt::Arg *A,
const llvm::Triple &Triple,
DiagnosticEngine &Diags) {
SanitizerKind kind = SanitizerKind::None;
// Find the sanitizer kind.
SanitizerKind pKind = SanitizerKind::None;
for (int i = 0, n = A->getNumValues(); i != n; ++i) {
kind =
llvm::StringSwitch<SanitizerKind>(A->getValue(i))
.Case("address", SanitizerKind::Address)
.Case("thread", SanitizerKind::Thread)
.Default(SanitizerKind::None);
if (kind == SanitizerKind::None) {
Diags.diagnose(SourceLoc(), diag::error_unsupported_option_argument,
A->getOption().getPrefixedName(), A->getValue(i));
return kind;
}
// Currently, more than one sanitizer cannot be enabled at the same time.
if (pKind != SanitizerKind::None && pKind != kind) {
SmallString<128> pb;
SmallString<128> b;
Diags.diagnose(SourceLoc(), diag::error_argument_not_allowed_with,
(A->getOption().getPrefixedName() + toStringRef(pKind)).toStringRef(pb),
(A->getOption().getPrefixedName() + toStringRef(kind)).toStringRef(b));
}
pKind = kind;
}
if (kind == SanitizerKind::None)
return kind;
// Check if the target is supported for this sanitizer.
// None of the sanitizers work on Linux right now.
if (!Triple.isOSDarwin()) {
SmallString<128> b;
Diags.diagnose(SourceLoc(), diag::error_unsupported_opt_for_target,
(A->getOption().getPrefixedName() + toStringRef(kind)).toStringRef(b),
Triple.getTriple());
}
// Thread Sanitizer only works on OS X and the simulators. It's only supported
// on 64 bit architectures.
if (kind == SanitizerKind::Thread &&
(!(Triple.isMacOSX() || tripleIsAnySimulator(Triple)) ||
!Triple.isArch64Bit())) {
SmallString<128> b;
Diags.diagnose(SourceLoc(), diag::error_unsupported_opt_for_target,
(A->getOption().getPrefixedName() + toStringRef(kind)).toStringRef(b),
Triple.getTriple());
}
return kind;
}
CudaInstallationDetector::CudaInstallationDetector(
const Driver &D, const llvm::Triple &HostTriple,
const llvm::opt::ArgList &Args)
: D(D) {
struct Candidate {
std::string Path;
bool StrictChecking;
Candidate(std::string Path, bool StrictChecking = false)
: Path(Path), StrictChecking(StrictChecking) {}
};
SmallVector<Candidate, 4> Candidates;
// In decreasing order so we prefer newer versions to older versions.
std::initializer_list<const char *> Versions = {"8.0", "7.5", "7.0"};
if (Args.hasArg(clang::driver::options::OPT_cuda_path_EQ)) {
Candidates.emplace_back(
Args.getLastArgValue(clang::driver::options::OPT_cuda_path_EQ).str());
} else if (HostTriple.isOSWindows()) {
for (const char *Ver : Versions)
Candidates.emplace_back(
D.SysRoot + "/Program Files/NVIDIA GPU Computing Toolkit/CUDA/v" +
Ver);
} else {
if (!Args.hasArg(clang::driver::options::OPT_cuda_path_ignore_env)) {
// Try to find ptxas binary. If the executable is located in a directory
// called 'bin/', its parent directory might be a good guess for a valid
// CUDA installation.
// However, some distributions might installs 'ptxas' to /usr/bin. In that
// case the candidate would be '/usr' which passes the following checks
// because '/usr/include' exists as well. To avoid this case, we always
// check for the directory potentially containing files for libdevice,
// even if the user passes -nocudalib.
if (llvm::ErrorOr<std::string> ptxas =
llvm::sys::findProgramByName("ptxas")) {
SmallString<256> ptxasAbsolutePath;
llvm::sys::fs::real_path(*ptxas, ptxasAbsolutePath);
StringRef ptxasDir = llvm::sys::path::parent_path(ptxasAbsolutePath);
if (llvm::sys::path::filename(ptxasDir) == "bin")
Candidates.emplace_back(llvm::sys::path::parent_path(ptxasDir),
/*StrictChecking=*/true);
}
}
Candidates.emplace_back(D.SysRoot + "/usr/local/cuda");
for (const char *Ver : Versions)
Candidates.emplace_back(D.SysRoot + "/usr/local/cuda-" + Ver);
if (Distro(D.getVFS()).IsDebian())
// Special case for Debian to have nvidia-cuda-toolkit work
// out of the box. More info on http://bugs.debian.org/882505
Candidates.emplace_back(D.SysRoot + "/usr/lib/cuda");
}
bool NoCudaLib = Args.hasArg(options::OPT_nocudalib);
for (const auto &Candidate : Candidates) {
InstallPath = Candidate.Path;
if (InstallPath.empty() || !D.getVFS().exists(InstallPath))
continue;
BinPath = InstallPath + "/bin";
IncludePath = InstallPath + "/include";
LibDevicePath = InstallPath + "/nvvm/libdevice";
auto &FS = D.getVFS();
if (!(FS.exists(IncludePath) && FS.exists(BinPath)))
continue;
bool CheckLibDevice = (!NoCudaLib || Candidate.StrictChecking);
if (CheckLibDevice && !FS.exists(LibDevicePath))
continue;
// On Linux, we have both lib and lib64 directories, and we need to choose
// based on our triple. On MacOS, we have only a lib directory.
//
// It's sufficient for our purposes to be flexible: If both lib and lib64
// exist, we choose whichever one matches our triple. Otherwise, if only
// lib exists, we use it.
if (HostTriple.isArch64Bit() && FS.exists(InstallPath + "/lib64"))
LibPath = InstallPath + "/lib64";
else if (FS.exists(InstallPath + "/lib"))
LibPath = InstallPath + "/lib";
else
continue;
llvm::ErrorOr<std::unique_ptr<llvm::MemoryBuffer>> VersionFile =
FS.getBufferForFile(InstallPath + "/version.txt");
if (!VersionFile) {
// CUDA 7.0 doesn't have a version.txt, so guess that's our version if
// version.txt isn't present.
Version = CudaVersion::CUDA_70;
} else {
Version = ParseCudaVersionFile((*VersionFile)->getBuffer());
}
if (Version >= CudaVersion::CUDA_90) {
// CUDA-9+ uses single libdevice file for all GPU variants.
std::string FilePath = LibDevicePath + "/libdevice.10.bc";
if (FS.exists(FilePath)) {
for (const char *GpuArchName :
{"sm_20", "sm_30", "sm_32", "sm_35", "sm_50", "sm_52", "sm_53",
"sm_60", "sm_61", "sm_62", "sm_70", "sm_72"}) {
const CudaArch GpuArch = StringToCudaArch(GpuArchName);
if (Version >= MinVersionForCudaArch(GpuArch) &&
Version <= MaxVersionForCudaArch(GpuArch))
LibDeviceMap[GpuArchName] = FilePath;
}
}
} else {
std::error_code EC;
for (llvm::sys::fs::directory_iterator LI(LibDevicePath, EC), LE;
!EC && LI != LE; LI = LI.increment(EC)) {
StringRef FilePath = LI->path();
StringRef FileName = llvm::sys::path::filename(FilePath);
// Process all bitcode filenames that look like
// libdevice.compute_XX.YY.bc
const StringRef LibDeviceName = "libdevice.";
if (!(FileName.startswith(LibDeviceName) && FileName.endswith(".bc")))
continue;
StringRef GpuArch = FileName.slice(
LibDeviceName.size(), FileName.find('.', LibDeviceName.size()));
LibDeviceMap[GpuArch] = FilePath.str();
// Insert map entries for specifc devices with this compute
// capability. NVCC's choice of the libdevice library version is
// rather peculiar and depends on the CUDA version.
if (GpuArch == "compute_20") {
LibDeviceMap["sm_20"] = FilePath;
LibDeviceMap["sm_21"] = FilePath;
LibDeviceMap["sm_32"] = FilePath;
} else if (GpuArch == "compute_30") {
LibDeviceMap["sm_30"] = FilePath;
if (Version < CudaVersion::CUDA_80) {
LibDeviceMap["sm_50"] = FilePath;
LibDeviceMap["sm_52"] = FilePath;
LibDeviceMap["sm_53"] = FilePath;
}
LibDeviceMap["sm_60"] = FilePath;
LibDeviceMap["sm_61"] = FilePath;
LibDeviceMap["sm_62"] = FilePath;
} else if (GpuArch == "compute_35") {
LibDeviceMap["sm_35"] = FilePath;
LibDeviceMap["sm_37"] = FilePath;
} else if (GpuArch == "compute_50") {
if (Version >= CudaVersion::CUDA_80) {
LibDeviceMap["sm_50"] = FilePath;
LibDeviceMap["sm_52"] = FilePath;
LibDeviceMap["sm_53"] = FilePath;
}
}
}
}
// Check that we have found at least one libdevice that we can link in if
// -nocudalib hasn't been specified.
if (LibDeviceMap.empty() && !NoCudaLib)
continue;
IsValid = true;
break;
}
}
CudaInstallationDetector::CudaInstallationDetector(
const Driver &D, const llvm::Triple &HostTriple,
const llvm::opt::ArgList &Args)
: D(D) {
SmallVector<std::string, 4> CudaPathCandidates;
// In decreasing order so we prefer newer versions to older versions.
std::initializer_list<const char *> Versions = {"8.0", "7.5", "7.0"};
if (Args.hasArg(clang::driver::options::OPT_cuda_path_EQ)) {
CudaPathCandidates.push_back(
Args.getLastArgValue(clang::driver::options::OPT_cuda_path_EQ));
} else if (HostTriple.isOSWindows()) {
for (const char *Ver : Versions)
CudaPathCandidates.push_back(
D.SysRoot + "/Program Files/NVIDIA GPU Computing Toolkit/CUDA/v" +
Ver);
} else {
CudaPathCandidates.push_back(D.SysRoot + "/usr/local/cuda");
for (const char *Ver : Versions)
CudaPathCandidates.push_back(D.SysRoot + "/usr/local/cuda-" + Ver);
}
for (const auto &CudaPath : CudaPathCandidates) {
if (CudaPath.empty() || !D.getVFS().exists(CudaPath))
continue;
InstallPath = CudaPath;
BinPath = CudaPath + "/bin";
IncludePath = InstallPath + "/include";
LibDevicePath = InstallPath + "/nvvm/libdevice";
auto &FS = D.getVFS();
if (!(FS.exists(IncludePath) && FS.exists(BinPath) &&
FS.exists(LibDevicePath)))
continue;
// On Linux, we have both lib and lib64 directories, and we need to choose
// based on our triple. On MacOS, we have only a lib directory.
//
// It's sufficient for our purposes to be flexible: If both lib and lib64
// exist, we choose whichever one matches our triple. Otherwise, if only
// lib exists, we use it.
if (HostTriple.isArch64Bit() && FS.exists(InstallPath + "/lib64"))
LibPath = InstallPath + "/lib64";
else if (FS.exists(InstallPath + "/lib"))
LibPath = InstallPath + "/lib";
else
continue;
llvm::ErrorOr<std::unique_ptr<llvm::MemoryBuffer>> VersionFile =
FS.getBufferForFile(InstallPath + "/version.txt");
if (!VersionFile) {
// CUDA 7.0 doesn't have a version.txt, so guess that's our version if
// version.txt isn't present.
Version = CudaVersion::CUDA_70;
} else {
Version = ParseCudaVersionFile((*VersionFile)->getBuffer());
}
std::error_code EC;
for (llvm::sys::fs::directory_iterator LI(LibDevicePath, EC), LE;
!EC && LI != LE; LI = LI.increment(EC)) {
StringRef FilePath = LI->path();
StringRef FileName = llvm::sys::path::filename(FilePath);
// Process all bitcode filenames that look like libdevice.compute_XX.YY.bc
const StringRef LibDeviceName = "libdevice.";
if (!(FileName.startswith(LibDeviceName) && FileName.endswith(".bc")))
continue;
StringRef GpuArch = FileName.slice(
LibDeviceName.size(), FileName.find('.', LibDeviceName.size()));
LibDeviceMap[GpuArch] = FilePath.str();
// Insert map entries for specifc devices with this compute
// capability. NVCC's choice of the libdevice library version is
// rather peculiar and depends on the CUDA version.
if (GpuArch == "compute_20") {
LibDeviceMap["sm_20"] = FilePath;
LibDeviceMap["sm_21"] = FilePath;
LibDeviceMap["sm_32"] = FilePath;
} else if (GpuArch == "compute_30") {
LibDeviceMap["sm_30"] = FilePath;
if (Version < CudaVersion::CUDA_80) {
LibDeviceMap["sm_50"] = FilePath;
LibDeviceMap["sm_52"] = FilePath;
LibDeviceMap["sm_53"] = FilePath;
}
LibDeviceMap["sm_60"] = FilePath;
LibDeviceMap["sm_61"] = FilePath;
LibDeviceMap["sm_62"] = FilePath;
} else if (GpuArch == "compute_35") {
LibDeviceMap["sm_35"] = FilePath;
LibDeviceMap["sm_37"] = FilePath;
} else if (GpuArch == "compute_50") {
if (Version >= CudaVersion::CUDA_80) {
LibDeviceMap["sm_50"] = FilePath;
LibDeviceMap["sm_52"] = FilePath;
LibDeviceMap["sm_53"] = FilePath;
}
}
}
IsValid = true;
break;
}
}
OptionSet<SanitizerKind> swift::parseSanitizerArgValues(
const llvm::opt::ArgList &Args,
const llvm::opt::Arg *A,
const llvm::Triple &Triple,
DiagnosticEngine &Diags,
llvm::function_ref<bool(llvm::StringRef, bool)> sanitizerRuntimeLibExists) {
OptionSet<SanitizerKind> sanitizerSet;
// Find the sanitizer kind.
for (int i = 0, n = A->getNumValues(); i != n; ++i) {
auto kind = llvm::StringSwitch<Optional<SanitizerKind>>(A->getValue(i))
.Case("address", SanitizerKind::Address)
.Case("thread", SanitizerKind::Thread)
.Case("fuzzer", SanitizerKind::Fuzzer)
.Default(None);
bool isShared = kind && *kind != SanitizerKind::Fuzzer;
if (!kind) {
Diags.diagnose(SourceLoc(), diag::error_unsupported_option_argument,
A->getOption().getPrefixedName(), A->getValue(i));
} else {
// Support is determined by existance of the sanitizer library.
bool sanitizerSupported =
sanitizerRuntimeLibExists(toFileName(*kind), isShared);
// TSan is explicitly not supported for 32 bits.
if (*kind == SanitizerKind::Thread && !Triple.isArch64Bit())
sanitizerSupported = false;
if (!sanitizerSupported) {
SmallString<128> b;
Diags.diagnose(SourceLoc(), diag::error_unsupported_opt_for_target,
(A->getOption().getPrefixedName() + toStringRef(*kind))
.toStringRef(b),
Triple.getTriple());
} else {
sanitizerSet |= *kind;
}
}
}
// Check that we're one of the known supported targets for sanitizers.
if (!(Triple.isOSDarwin() || Triple.isOSLinux() || Triple.isOSWindows())) {
SmallString<128> b;
Diags.diagnose(SourceLoc(), diag::error_unsupported_opt_for_target,
(A->getOption().getPrefixedName() +
StringRef(A->getAsString(Args))).toStringRef(b),
Triple.getTriple());
}
// Address and thread sanitizers can not be enabled concurrently.
if ((sanitizerSet & SanitizerKind::Thread)
&& (sanitizerSet & SanitizerKind::Address)) {
SmallString<128> b1;
SmallString<128> b2;
Diags.diagnose(SourceLoc(), diag::error_argument_not_allowed_with,
(A->getOption().getPrefixedName()
+ toStringRef(SanitizerKind::Address)).toStringRef(b1),
(A->getOption().getPrefixedName()
+ toStringRef(SanitizerKind::Thread)).toStringRef(b2));
}
return sanitizerSet;
}
MipsLinkingContext::MipsLinkingContext(llvm::Triple triple)
: ELFLinkingContext(triple, createTarget(triple, *this)),
_flagsMerger(triple.isArch64Bit()) {}
static bool isTSanSupported(
const llvm::Triple &Triple,
llvm::function_ref<bool(llvm::StringRef)> sanitizerRuntimeLibExists) {
return Triple.isArch64Bit() && sanitizerRuntimeLibExists("tsan");
}