StringRef swift::getPlatformNameForTriple(const llvm::Triple &triple) {
if (triple.isOSDarwin())
return getPlatformNameForDarwin(getDarwinPlatformKind(triple));
if (triple.isAndroid())
return "android";
if (triple.isOSLinux())
return "linux";
if (triple.isOSFreeBSD())
return "freebsd";
if (triple.isOSWindows())
return "windows";
return "";
}
ARMTargetInfo::ARMTargetInfo(const llvm::Triple &Triple,
const TargetOptions &Opts)
: TargetInfo(Triple), FPMath(FP_Default), IsAAPCS(true), LDREX(0),
HW_FP(0) {
bool IsOpenBSD = Triple.isOSOpenBSD();
bool IsNetBSD = Triple.isOSNetBSD();
// FIXME: the isOSBinFormatMachO is a workaround for identifying a Darwin-like
// environment where size_t is `unsigned long` rather than `unsigned int`
PtrDiffType = IntPtrType =
(Triple.isOSDarwin() || Triple.isOSBinFormatMachO() || IsOpenBSD ||
IsNetBSD)
? SignedLong
: SignedInt;
SizeType = (Triple.isOSDarwin() || Triple.isOSBinFormatMachO() || IsOpenBSD ||
IsNetBSD)
? UnsignedLong
: UnsignedInt;
// ptrdiff_t is inconsistent on Darwin
if ((Triple.isOSDarwin() || Triple.isOSBinFormatMachO()) &&
!Triple.isWatchABI())
PtrDiffType = SignedInt;
// Cache arch related info.
setArchInfo();
// {} in inline assembly are neon specifiers, not assembly variant
// specifiers.
NoAsmVariants = true;
// FIXME: This duplicates code from the driver that sets the -target-abi
// option - this code is used if -target-abi isn't passed and should
// be unified in some way.
if (Triple.isOSBinFormatMachO()) {
// The backend is hardwired to assume AAPCS for M-class processors, ensure
// the frontend matches that.
if (Triple.getEnvironment() == llvm::Triple::EABI ||
Triple.getOS() == llvm::Triple::UnknownOS ||
ArchProfile == llvm::ARM::ProfileKind::M) {
setABI("aapcs");
} else if (Triple.isWatchABI()) {
setABI("aapcs16");
} else {
setABI("apcs-gnu");
}
} else if (Triple.isOSWindows()) {
// FIXME: this is invalid for WindowsCE
setABI("aapcs");
} else {
// Select the default based on the platform.
switch (Triple.getEnvironment()) {
case llvm::Triple::Android:
case llvm::Triple::GNUEABI:
case llvm::Triple::GNUEABIHF:
case llvm::Triple::MuslEABI:
case llvm::Triple::MuslEABIHF:
setABI("aapcs-linux");
break;
case llvm::Triple::EABIHF:
case llvm::Triple::EABI:
setABI("aapcs");
break;
case llvm::Triple::GNU:
setABI("apcs-gnu");
break;
default:
if (IsNetBSD)
setABI("apcs-gnu");
else if (IsOpenBSD)
setABI("aapcs-linux");
else
setABI("aapcs");
break;
}
}
// ARM targets default to using the ARM C++ ABI.
TheCXXABI.set(TargetCXXABI::GenericARM);
// ARM has atomics up to 8 bytes
setAtomic();
// Maximum alignment for ARM NEON data types should be 64-bits (AAPCS)
if (IsAAPCS && (Triple.getEnvironment() != llvm::Triple::Android))
MaxVectorAlign = 64;
// Do force alignment of members that follow zero length bitfields. If
// the alignment of the zero-length bitfield is greater than the member
// that follows it, `bar', `bar' will be aligned as the type of the
// zero length bitfield.
UseZeroLengthBitfieldAlignment = true;
if (Triple.getOS() == llvm::Triple::Linux ||
Triple.getOS() == llvm::Triple::UnknownOS)
this->MCountName = Opts.EABIVersion == llvm::EABI::GNU
? "\01__gnu_mcount_nc"
: "\01mcount";
}
std::pair<bool, bool> LangOptions::setTarget(llvm::Triple triple) {
clearAllPlatformConditionValues();
if (triple.getOS() == llvm::Triple::Darwin &&
triple.getVendor() == llvm::Triple::Apple) {
// Rewrite darwinX.Y triples to macosx10.X'.Y ones.
// It affects code generation on our platform.
llvm::SmallString<16> osxBuf;
llvm::raw_svector_ostream osx(osxBuf);
osx << llvm::Triple::getOSTypeName(llvm::Triple::MacOSX);
unsigned major, minor, micro;
triple.getMacOSXVersion(major, minor, micro);
osx << major << "." << minor;
if (micro != 0)
osx << "." << micro;
triple.setOSName(osx.str());
}
Target = std::move(triple);
bool UnsupportedOS = false;
// Set the "os" platform condition.
if (Target.isMacOSX())
addPlatformConditionValue(PlatformConditionKind::OS, "OSX");
else if (triple.isTvOS())
addPlatformConditionValue(PlatformConditionKind::OS, "tvOS");
else if (triple.isWatchOS())
addPlatformConditionValue(PlatformConditionKind::OS, "watchOS");
else if (triple.isiOS())
addPlatformConditionValue(PlatformConditionKind::OS, "iOS");
else if (triple.isAndroid())
addPlatformConditionValue(PlatformConditionKind::OS, "Android");
else if (triple.isOSLinux())
addPlatformConditionValue(PlatformConditionKind::OS, "Linux");
else if (triple.isOSFreeBSD())
addPlatformConditionValue(PlatformConditionKind::OS, "FreeBSD");
else if (triple.isOSWindows())
addPlatformConditionValue(PlatformConditionKind::OS, "Windows");
else if (triple.isWindowsCygwinEnvironment())
addPlatformConditionValue(PlatformConditionKind::OS, "Cygwin");
else if (triple.isPS4())
addPlatformConditionValue(PlatformConditionKind::OS, "PS4");
else
UnsupportedOS = true;
bool UnsupportedArch = false;
// Set the "arch" platform condition.
switch (Target.getArch()) {
case llvm::Triple::ArchType::arm:
case llvm::Triple::ArchType::thumb:
addPlatformConditionValue(PlatformConditionKind::Arch, "arm");
break;
case llvm::Triple::ArchType::aarch64:
addPlatformConditionValue(PlatformConditionKind::Arch, "arm64");
break;
case llvm::Triple::ArchType::ppc64:
addPlatformConditionValue(PlatformConditionKind::Arch, "powerpc64");
break;
case llvm::Triple::ArchType::ppc64le:
addPlatformConditionValue(PlatformConditionKind::Arch, "powerpc64le");
break;
case llvm::Triple::ArchType::x86:
addPlatformConditionValue(PlatformConditionKind::Arch, "i386");
break;
case llvm::Triple::ArchType::x86_64:
addPlatformConditionValue(PlatformConditionKind::Arch, "x86_64");
break;
case llvm::Triple::ArchType::systemz:
addPlatformConditionValue(PlatformConditionKind::Arch, "s390x");
break;
default:
UnsupportedArch = true;
}
if (UnsupportedOS || UnsupportedArch)
return { UnsupportedOS, UnsupportedArch };
// Set the "_endian" platform condition.
switch (Target.getArch()) {
case llvm::Triple::ArchType::arm:
case llvm::Triple::ArchType::thumb:
addPlatformConditionValue(PlatformConditionKind::Endianness, "little");
break;
case llvm::Triple::ArchType::aarch64:
addPlatformConditionValue(PlatformConditionKind::Endianness, "little");
break;
case llvm::Triple::ArchType::ppc64:
addPlatformConditionValue(PlatformConditionKind::Endianness, "big");
break;
case llvm::Triple::ArchType::ppc64le:
addPlatformConditionValue(PlatformConditionKind::Endianness, "little");
break;
case llvm::Triple::ArchType::x86:
addPlatformConditionValue(PlatformConditionKind::Endianness, "little");
break;
case llvm::Triple::ArchType::x86_64:
addPlatformConditionValue(PlatformConditionKind::Endianness, "little");
break;
case llvm::Triple::ArchType::systemz:
addPlatformConditionValue(PlatformConditionKind::Endianness, "big");
break;
default:
llvm_unreachable("undefined architecture endianness");
}
// Set the "runtime" platform condition.
if (EnableObjCInterop)
addPlatformConditionValue(PlatformConditionKind::Runtime, "_ObjC");
else
addPlatformConditionValue(PlatformConditionKind::Runtime, "_Native");
// If you add anything to this list, change the default size of
// PlatformConditionValues to not require an extra allocation
// in the common case.
return { false, false };
}
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;
}
