Gericom/teak-llvm
1
Fork 0
mirror of https://github.com/Gericom/teak-llvm.git synced 2025-06-19 19:45:40 -04:00
Code Issues Actions Packages Projects Releases Wiki Activity
965a361f57
teak-llvm/clang/lib/Driver/ToolChain.cpp
Martin Storsjo 965a361f57 [Driver] Use forward slashes in most linker arguments 
libtool inspects the output of $CC -v to detect what object files and
libraries are linked in by default. When clang is built as a native
windows executable, all paths are formatted with backslashes, and
the backslashes cause each argument to be enclosed in quotes. The
backslashes and quotes break further processing within libtool (which
is implemented in shell script, running in e.g. msys) pretty badly.

Between unix style pathes (that only work in tools that are linked
to the msys runtime, essentially the same as cygwin) and proper windows
style paths (with backslashes, that can easily break shell scripts
and msys environments), the best compromise is to use windows style
paths (starting with e.g. c:) but with forward slashes, which both
msys based tools, shell scripts and native windows executables can
cope with. This incidentally turns out to be the form of paths that
GCC prints out when run with -v on windows as well.

This change potentially makes the output from clang -v a bit more
inconsistent, but it is isn't necessarily very consistent to begin with.

Differential Revision: https://reviews.llvm.org/D53066

llvm-svn: 345004
2018-10-23 06:33:26 +00:00

964 lines
32 KiB
C++
Raw Blame History

//===- ToolChain.cpp - Collections of tools for one platform --------------===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
#include "clang/Driver/ToolChain.h"
#include "InputInfo.h"
#include "ToolChains/Arch/ARM.h"
#include "ToolChains/Clang.h"
#include "clang/Basic/ObjCRuntime.h"
#include "clang/Basic/Sanitizers.h"
#include "clang/Config/config.h"
#include "clang/Driver/Action.h"
#include "clang/Driver/Driver.h"
#include "clang/Driver/DriverDiagnostic.h"
#include "clang/Driver/Job.h"
#include "clang/Driver/Options.h"
#include "clang/Driver/SanitizerArgs.h"
#include "clang/Driver/XRayArgs.h"
#include "llvm/ADT/STLExtras.h"
#include "llvm/ADT/SmallString.h"
#include "llvm/ADT/StringRef.h"
#include "llvm/ADT/Triple.h"
#include "llvm/ADT/Twine.h"
#include "llvm/Config/llvm-config.h"
#include "llvm/MC/MCTargetOptions.h"
#include "llvm/Option/Arg.h"
#include "llvm/Option/ArgList.h"
#include "llvm/Option/OptTable.h"
#include "llvm/Option/Option.h"
#include "llvm/Support/ErrorHandling.h"
#include "llvm/Support/FileSystem.h"
#include "llvm/Support/Path.h"
#include "llvm/Support/TargetParser.h"
#include "llvm/Support/TargetRegistry.h"
#include "llvm/Support/VersionTuple.h"
#include "llvm/Support/VirtualFileSystem.h"
#include <cassert>
#include <cstddef>
#include <cstring>
#include <string>
using namespace clang;
using namespace driver;
using namespace tools;
using namespace llvm;
using namespace llvm::opt;
static llvm::opt::Arg *GetRTTIArgument(const ArgList &Args) {
return Args.getLastArg(options::OPT_mkernel, options::OPT_fapple_kext,
options::OPT_fno_rtti, options::OPT_frtti);
}
static ToolChain::RTTIMode CalculateRTTIMode(const ArgList &Args,
const llvm::Triple &Triple,
const Arg *CachedRTTIArg) {
// Explicit rtti/no-rtti args
if (CachedRTTIArg) {
if (CachedRTTIArg->getOption().matches(options::OPT_frtti))
return ToolChain::RM_Enabled;
else
return ToolChain::RM_Disabled;
}
// -frtti is default, except for the PS4 CPU.
return (Triple.isPS4CPU()) ? ToolChain::RM_Disabled : ToolChain::RM_Enabled;
}
ToolChain::ToolChain(const Driver &D, const llvm::Triple &T,
const ArgList &Args)
: D(D), Triple(T), Args(Args), CachedRTTIArg(GetRTTIArgument(Args)),
CachedRTTIMode(CalculateRTTIMode(Args, Triple, CachedRTTIArg)) {
SmallString<128> P;
P.assign(D.ResourceDir);
llvm::sys::path::append(P, D.getTargetTriple(), "lib");
if (getVFS().exists(P))
getLibraryPaths().push_back(P.str());
P.assign(D.ResourceDir);
llvm::sys::path::append(P, Triple.str(), "lib");
if (getVFS().exists(P))
getLibraryPaths().push_back(P.str());
std::string CandidateLibPath = getArchSpecificLibPath();
if (getVFS().exists(CandidateLibPath))
getFilePaths().push_back(CandidateLibPath);
}
void ToolChain::setTripleEnvironment(llvm::Triple::EnvironmentType Env) {
Triple.setEnvironment(Env);
if (EffectiveTriple != llvm::Triple())
EffectiveTriple.setEnvironment(Env);
}
ToolChain::~ToolChain() = default;
llvm::vfs::FileSystem &ToolChain::getVFS() const {
return getDriver().getVFS();
}
bool ToolChain::useIntegratedAs() const {
return Args.hasFlag(options::OPT_fintegrated_as,
options::OPT_fno_integrated_as,
IsIntegratedAssemblerDefault());
}
bool ToolChain::useRelaxRelocations() const {
return ENABLE_X86_RELAX_RELOCATIONS;
}
const SanitizerArgs& ToolChain::getSanitizerArgs() const {
if (!SanitizerArguments.get())
SanitizerArguments.reset(new SanitizerArgs(*this, Args));
return *SanitizerArguments.get();
}
const XRayArgs& ToolChain::getXRayArgs() const {
if (!XRayArguments.get())
XRayArguments.reset(new XRayArgs(*this, Args));
return *XRayArguments.get();
}
namespace {
struct DriverSuffix {
const char *Suffix;
const char *ModeFlag;
};
} // namespace
static const DriverSuffix *FindDriverSuffix(StringRef ProgName, size_t &Pos) {
// A list of known driver suffixes. Suffixes are compared against the
// program name in order. If there is a match, the frontend type is updated as
// necessary by applying the ModeFlag.
static const DriverSuffix DriverSuffixes[] = {
{"clang", nullptr},
{"clang++", "--driver-mode=g++"},
{"clang-c++", "--driver-mode=g++"},
{"clang-cc", nullptr},
{"clang-cpp", "--driver-mode=cpp"},
{"clang-g++", "--driver-mode=g++"},
{"clang-gcc", nullptr},
{"clang-cl", "--driver-mode=cl"},
{"cc", nullptr},
{"cpp", "--driver-mode=cpp"},
{"cl", "--driver-mode=cl"},
{"++", "--driver-mode=g++"},
};
for (size_t i = 0; i < llvm::array_lengthof(DriverSuffixes); ++i) {
StringRef Suffix(DriverSuffixes[i].Suffix);
if (ProgName.endswith(Suffix)) {
Pos = ProgName.size() - Suffix.size();
return &DriverSuffixes[i];
}
}
return nullptr;
}
/// Normalize the program name from argv[0] by stripping the file extension if
/// present and lower-casing the string on Windows.
static std::string normalizeProgramName(llvm::StringRef Argv0) {
std::string ProgName = llvm::sys::path::stem(Argv0);
#ifdef _WIN32
// Transform to lowercase for case insensitive file systems.
std::transform(ProgName.begin(), ProgName.end(), ProgName.begin(), ::tolower);
#endif
return ProgName;
}
static const DriverSuffix *parseDriverSuffix(StringRef ProgName, size_t &Pos) {
// Try to infer frontend type and default target from the program name by
// comparing it against DriverSuffixes in order.
// If there is a match, the function tries to identify a target as prefix.
// E.g. "x86_64-linux-clang" as interpreted as suffix "clang" with target
// prefix "x86_64-linux". If such a target prefix is found, it may be
// added via -target as implicit first argument.
const DriverSuffix *DS = FindDriverSuffix(ProgName, Pos);
if (!DS) {
// Try again after stripping any trailing version number:
// clang++3.5 -> clang++
ProgName = ProgName.rtrim("0123456789.");
DS = FindDriverSuffix(ProgName, Pos);
}
if (!DS) {
// Try again after stripping trailing -component.
// clang++-tot -> clang++
ProgName = ProgName.slice(0, ProgName.rfind('-'));
DS = FindDriverSuffix(ProgName, Pos);
}
return DS;
}
ParsedClangName
ToolChain::getTargetAndModeFromProgramName(StringRef PN) {
std::string ProgName = normalizeProgramName(PN);
size_t SuffixPos;
const DriverSuffix *DS = parseDriverSuffix(ProgName, SuffixPos);
if (!DS)
return {};
size_t SuffixEnd = SuffixPos + strlen(DS->Suffix);
size_t LastComponent = ProgName.rfind('-', SuffixPos);
if (LastComponent == std::string::npos)
return ParsedClangName(ProgName.substr(0, SuffixEnd), DS->ModeFlag);
std::string ModeSuffix = ProgName.substr(LastComponent + 1,
SuffixEnd - LastComponent - 1);
// Infer target from the prefix.
StringRef Prefix(ProgName);
Prefix = Prefix.slice(0, LastComponent);
std::string IgnoredError;
bool IsRegistered = llvm::TargetRegistry::lookupTarget(Prefix, IgnoredError);
return ParsedClangName{Prefix, ModeSuffix, DS->ModeFlag, IsRegistered};
}
StringRef ToolChain::getDefaultUniversalArchName() const {
// In universal driver terms, the arch name accepted by -arch isn't exactly
// the same as the ones that appear in the triple. Roughly speaking, this is
// an inverse of the darwin::getArchTypeForDarwinArchName() function, but the
// only interesting special case is powerpc.
switch (Triple.getArch()) {
case llvm::Triple::ppc:
return "ppc";
case llvm::Triple::ppc64:
return "ppc64";
case llvm::Triple::ppc64le:
return "ppc64le";
default:
return Triple.getArchName();
}
}
std::string ToolChain::getInputFilename(const InputInfo &Input) const {
return Input.getFilename();
}
bool ToolChain::IsUnwindTablesDefault(const ArgList &Args) const {
return false;
}
Tool *ToolChain::getClang() const {
if (!Clang)
Clang.reset(new tools::Clang(*this));
return Clang.get();
}
Tool *ToolChain::buildAssembler() const {
return new tools::ClangAs(*this);
}
Tool *ToolChain::buildLinker() const {
llvm_unreachable("Linking is not supported by this toolchain");
}
Tool *ToolChain::getAssemble() const {
if (!Assemble)
Assemble.reset(buildAssembler());
return Assemble.get();
}
Tool *ToolChain::getClangAs() const {
if (!Assemble)
Assemble.reset(new tools::ClangAs(*this));
return Assemble.get();
}
Tool *ToolChain::getLink() const {
if (!Link)
Link.reset(buildLinker());
return Link.get();
}
Tool *ToolChain::getOffloadBundler() const {
if (!OffloadBundler)
OffloadBundler.reset(new tools::OffloadBundler(*this));
return OffloadBundler.get();
}
Tool *ToolChain::getTool(Action::ActionClass AC) const {
switch (AC) {
case Action::AssembleJobClass:
return getAssemble();
case Action::LinkJobClass:
return getLink();
case Action::InputClass:
case Action::BindArchClass:
case Action::OffloadClass:
case Action::LipoJobClass:
case Action::DsymutilJobClass:
case Action::VerifyDebugInfoJobClass:
llvm_unreachable("Invalid tool kind.");
case Action::CompileJobClass:
case Action::PrecompileJobClass:
case Action::HeaderModulePrecompileJobClass:
case Action::PreprocessJobClass:
case Action::AnalyzeJobClass:
case Action::MigrateJobClass:
case Action::VerifyPCHJobClass:
case Action::BackendJobClass:
return getClang();
case Action::OffloadBundlingJobClass:
case Action::OffloadUnbundlingJobClass:
return getOffloadBundler();
}
llvm_unreachable("Invalid tool kind.");
}
static StringRef getArchNameForCompilerRTLib(const ToolChain &TC,
const ArgList &Args) {
const llvm::Triple &Triple = TC.getTriple();
bool IsWindows = Triple.isOSWindows();
if (TC.getArch() == llvm::Triple::arm || TC.getArch() == llvm::Triple::armeb)
return (arm::getARMFloatABI(TC, Args) == arm::FloatABI::Hard && !IsWindows)
? "armhf"
: "arm";
// For historic reasons, Android library is using i686 instead of i386.
if (TC.getArch() == llvm::Triple::x86 && Triple.isAndroid())
return "i686";
return llvm::Triple::getArchTypeName(TC.getArch());
}
StringRef ToolChain::getOSLibName() const {
switch (Triple.getOS()) {
case llvm::Triple::FreeBSD:
return "freebsd";
case llvm::Triple::NetBSD:
return "netbsd";
case llvm::Triple::OpenBSD:
return "openbsd";
case llvm::Triple::Solaris:
return "sunos";
default:
return getOS();
}
}
std::string ToolChain::getCompilerRTPath() const {
SmallString<128> Path(getDriver().ResourceDir);
if (Triple.isOSUnknown()) {
llvm::sys::path::append(Path, "lib");
} else {
llvm::sys::path::append(Path, "lib", getOSLibName());
}
return Path.str();
}
std::string ToolChain::getCompilerRT(const ArgList &Args, StringRef Component,
bool Shared) const {
const llvm::Triple &TT = getTriple();
bool IsITANMSVCWindows =
TT.isWindowsMSVCEnvironment() || TT.isWindowsItaniumEnvironment();
const char *Prefix = IsITANMSVCWindows ? "" : "lib";
const char *Suffix = Shared ? (Triple.isOSWindows() ? ".lib" : ".so")
: (IsITANMSVCWindows ? ".lib" : ".a");
if (Shared && Triple.isWindowsGNUEnvironment())
Suffix = ".dll.a";
for (const auto &LibPath : getLibraryPaths()) {
SmallString<128> P(LibPath);
llvm::sys::path::append(P, Prefix + Twine("clang_rt.") + Component + Suffix);
if (getVFS().exists(P))
return llvm::sys::path::convert_to_slash(P);
}
StringRef Arch = getArchNameForCompilerRTLib(*this, Args);
const char *Env = TT.isAndroid() ? "-android" : "";
SmallString<128> Path(getCompilerRTPath());
llvm::sys::path::append(Path, Prefix + Twine("clang_rt.") + Component + "-" +
Arch + Env + Suffix);
return llvm::sys::path::convert_to_slash(Path);
}
const char *ToolChain::getCompilerRTArgString(const llvm::opt::ArgList &Args,
StringRef Component,
bool Shared) const {
return Args.MakeArgString(getCompilerRT(Args, Component, Shared));
}
std::string ToolChain::getArchSpecificLibPath() const {
SmallString<128> Path(getDriver().ResourceDir);
llvm::sys::path::append(Path, "lib", getOSLibName(),
llvm::Triple::getArchTypeName(getArch()));
return Path.str();
}
bool ToolChain::needsProfileRT(const ArgList &Args) {
if (Args.hasFlag(options::OPT_fprofile_arcs, options::OPT_fno_profile_arcs,
false) ||
Args.hasArg(options::OPT_fprofile_generate) ||
Args.hasArg(options::OPT_fprofile_generate_EQ) ||
Args.hasArg(options::OPT_fprofile_instr_generate) ||
Args.hasArg(options::OPT_fprofile_instr_generate_EQ) ||
Args.hasArg(options::OPT_fcreate_profile) ||
Args.hasArg(options::OPT_coverage))
return true;
return false;
}
Tool *ToolChain::SelectTool(const JobAction &JA) const {
if (getDriver().ShouldUseClangCompiler(JA)) return getClang();
Action::ActionClass AC = JA.getKind();
if (AC == Action::AssembleJobClass && useIntegratedAs())
return getClangAs();
return getTool(AC);
}
std::string ToolChain::GetFilePath(const char *Name) const {
return llvm::sys::path::convert_to_slash(D.GetFilePath(Name, *this));
}
std::string ToolChain::GetProgramPath(const char *Name) const {
return D.GetProgramPath(Name, *this);
}
std::string ToolChain::GetLinkerPath() const {
const Arg* A = Args.getLastArg(options::OPT_fuse_ld_EQ);
StringRef UseLinker = A ? A->getValue() : CLANG_DEFAULT_LINKER;
if (llvm::sys::path::is_absolute(UseLinker)) {
// If we're passed what looks like an absolute path, don't attempt to
// second-guess that.
if (llvm::sys::fs::can_execute(UseLinker))
return UseLinker;
} else if (UseLinker.empty() || UseLinker == "ld") {
// If we're passed -fuse-ld= with no argument, or with the argument ld,
// then use whatever the default system linker is.
return GetProgramPath(getDefaultLinker());
} else {
llvm::SmallString<8> LinkerName;
if (Triple.isOSDarwin())
LinkerName.append("ld64.");
else
LinkerName.append("ld.");
LinkerName.append(UseLinker);
std::string LinkerPath(GetProgramPath(LinkerName.c_str()));
if (llvm::sys::fs::can_execute(LinkerPath))
return LinkerPath;
}
if (A)
getDriver().Diag(diag::err_drv_invalid_linker_name) << A->getAsString(Args);
return GetProgramPath(getDefaultLinker());
}
types::ID ToolChain::LookupTypeForExtension(StringRef Ext) const {
return types::lookupTypeForExtension(Ext);
}
bool ToolChain::HasNativeLLVMSupport() const {
return false;
}
bool ToolChain::isCrossCompiling() const {
llvm::Triple HostTriple(LLVM_HOST_TRIPLE);
switch (HostTriple.getArch()) {
// The A32/T32/T16 instruction sets are not separate architectures in this
// context.
case llvm::Triple::arm:
case llvm::Triple::armeb:
case llvm::Triple::thumb:
case llvm::Triple::thumbeb:
return getArch() != llvm::Triple::arm && getArch() != llvm::Triple::thumb &&
getArch() != llvm::Triple::armeb && getArch() != llvm::Triple::thumbeb;
default:
return HostTriple.getArch() != getArch();
}
}
ObjCRuntime ToolChain::getDefaultObjCRuntime(bool isNonFragile) const {
return ObjCRuntime(isNonFragile ? ObjCRuntime::GNUstep : ObjCRuntime::GCC,
VersionTuple());
}
llvm::ExceptionHandling
ToolChain::GetExceptionModel(const llvm::opt::ArgList &Args) const {
return llvm::ExceptionHandling::None;
}
bool ToolChain::isThreadModelSupported(const StringRef Model) const {
if (Model == "single") {
// FIXME: 'single' is only supported on ARM and WebAssembly so far.
return Triple.getArch() == llvm::Triple::arm ||
Triple.getArch() == llvm::Triple::armeb ||
Triple.getArch() == llvm::Triple::thumb ||
Triple.getArch() == llvm::Triple::thumbeb ||
Triple.getArch() == llvm::Triple::wasm32 ||
Triple.getArch() == llvm::Triple::wasm64;
} else if (Model == "posix")
return true;
return false;
}
std::string ToolChain::ComputeLLVMTriple(const ArgList &Args,
types::ID InputType) const {
switch (getTriple().getArch()) {
default:
return getTripleString();
case llvm::Triple::x86_64: {
llvm::Triple Triple = getTriple();
if (!Triple.isOSBinFormatMachO())
return getTripleString();
if (Arg *A = Args.getLastArg(options::OPT_march_EQ)) {
// x86_64h goes in the triple. Other -march options just use the
// vanilla triple we already have.
StringRef MArch = A->getValue();
if (MArch == "x86_64h")
Triple.setArchName(MArch);
}
return Triple.getTriple();
}
case llvm::Triple::aarch64: {
llvm::Triple Triple = getTriple();
if (!Triple.isOSBinFormatMachO())
return getTripleString();
// FIXME: older versions of ld64 expect the "arm64" component in the actual
// triple string and query it to determine whether an LTO file can be
// handled. Remove this when we don't care any more.
Triple.setArchName("arm64");
return Triple.getTriple();
}
case llvm::Triple::arm:
case llvm::Triple::armeb:
case llvm::Triple::thumb:
case llvm::Triple::thumbeb: {
// FIXME: Factor into subclasses.
llvm::Triple Triple = getTriple();
bool IsBigEndian = getTriple().getArch() == llvm::Triple::armeb ||
getTriple().getArch() == llvm::Triple::thumbeb;
// Handle pseudo-target flags '-mlittle-endian'/'-EL' and
// '-mbig-endian'/'-EB'.
if (Arg *A = Args.getLastArg(options::OPT_mlittle_endian,
options::OPT_mbig_endian)) {
IsBigEndian = !A->getOption().matches(options::OPT_mlittle_endian);
}
// Thumb2 is the default for V7 on Darwin.
//
// FIXME: Thumb should just be another -target-feaure, not in the triple.
StringRef MCPU, MArch;
if (const Arg *A = Args.getLastArg(options::OPT_mcpu_EQ))
MCPU = A->getValue();
if (const Arg *A = Args.getLastArg(options::OPT_march_EQ))
MArch = A->getValue();
std::string CPU =
Triple.isOSBinFormatMachO()
? tools::arm::getARMCPUForMArch(MArch, Triple).str()
: tools::arm::getARMTargetCPU(MCPU, MArch, Triple);
StringRef Suffix =
tools::arm::getLLVMArchSuffixForARM(CPU, MArch, Triple);
bool IsMProfile = ARM::parseArchProfile(Suffix) == ARM::ProfileKind::M;
bool ThumbDefault = IsMProfile || (ARM::parseArchVersion(Suffix) == 7 &&
getTriple().isOSBinFormatMachO());
// FIXME: this is invalid for WindowsCE
if (getTriple().isOSWindows())
ThumbDefault = true;
std::string ArchName;
if (IsBigEndian)
ArchName = "armeb";
else
ArchName = "arm";
// Check if ARM ISA was explicitly selected (using -mno-thumb or -marm) for
// M-Class CPUs/architecture variants, which is not supported.
bool ARMModeRequested = !Args.hasFlag(options::OPT_mthumb,
options::OPT_mno_thumb, ThumbDefault);
if (IsMProfile && ARMModeRequested) {
if (!MCPU.empty())
getDriver().Diag(diag::err_cpu_unsupported_isa) << CPU << "ARM";
else
getDriver().Diag(diag::err_arch_unsupported_isa)
<< tools::arm::getARMArch(MArch, getTriple()) << "ARM";
}
// Check to see if an explicit choice to use thumb has been made via
// -mthumb. For assembler files we must check for -mthumb in the options
// passed to the assember via -Wa or -Xassembler.
bool IsThumb = false;
if (InputType != types::TY_PP_Asm)
IsThumb = Args.hasFlag(options::OPT_mthumb, options::OPT_mno_thumb,
ThumbDefault);
else {
// Ideally we would check for these flags in
// CollectArgsForIntegratedAssembler but we can't change the ArchName at
// that point. There is no assembler equivalent of -mno-thumb, -marm, or
// -mno-arm.
for (const auto *A :
Args.filtered(options::OPT_Wa_COMMA, options::OPT_Xassembler)) {
for (StringRef Value : A->getValues()) {
if (Value == "-mthumb")
IsThumb = true;
}
}
}
// Assembly files should start in ARM mode, unless arch is M-profile, or
// -mthumb has been passed explicitly to the assembler. Windows is always
// thumb.
if (IsThumb || IsMProfile || getTriple().isOSWindows()) {
if (IsBigEndian)
ArchName = "thumbeb";
else
ArchName = "thumb";
}
Triple.setArchName(ArchName + Suffix.str());
return Triple.getTriple();
}
}
}
std::string ToolChain::ComputeEffectiveClangTriple(const ArgList &Args,
types::ID InputType) const {
return ComputeLLVMTriple(Args, InputType);
}
void ToolChain::AddClangSystemIncludeArgs(const ArgList &DriverArgs,
ArgStringList &CC1Args) const {
// Each toolchain should provide the appropriate include flags.
}
void ToolChain::addClangTargetOptions(
const ArgList &DriverArgs, ArgStringList &CC1Args,
Action::OffloadKind DeviceOffloadKind) const {}
void ToolChain::addClangWarningOptions(ArgStringList &CC1Args) const {}
void ToolChain::addProfileRTLibs(const llvm::opt::ArgList &Args,
llvm::opt::ArgStringList &CmdArgs) const {
if (!needsProfileRT(Args)) return;
CmdArgs.push_back(getCompilerRTArgString(Args, "profile"));
}
ToolChain::RuntimeLibType ToolChain::GetRuntimeLibType(
const ArgList &Args) const {
const Arg* A = Args.getLastArg(options::OPT_rtlib_EQ);
StringRef LibName = A ? A->getValue() : CLANG_DEFAULT_RTLIB;
// Only use "platform" in tests to override CLANG_DEFAULT_RTLIB!
if (LibName == "compiler-rt")
return ToolChain::RLT_CompilerRT;
else if (LibName == "libgcc")
return ToolChain::RLT_Libgcc;
else if (LibName == "platform")
return GetDefaultRuntimeLibType();
if (A)
getDriver().Diag(diag::err_drv_invalid_rtlib_name) << A->getAsString(Args);
return GetDefaultRuntimeLibType();
}
ToolChain::CXXStdlibType ToolChain::GetCXXStdlibType(const ArgList &Args) const{
const Arg *A = Args.getLastArg(options::OPT_stdlib_EQ);
StringRef LibName = A ? A->getValue() : CLANG_DEFAULT_CXX_STDLIB;
// Only use "platform" in tests to override CLANG_DEFAULT_CXX_STDLIB!
if (LibName == "libc++")
return ToolChain::CST_Libcxx;
else if (LibName == "libstdc++")
return ToolChain::CST_Libstdcxx;
else if (LibName == "platform")
return GetDefaultCXXStdlibType();
if (A)
getDriver().Diag(diag::err_drv_invalid_stdlib_name) << A->getAsString(Args);
return GetDefaultCXXStdlibType();
}
/// Utility function to add a system include directory to CC1 arguments.
/*static*/ void ToolChain::addSystemInclude(const ArgList &DriverArgs,
ArgStringList &CC1Args,
const Twine &Path) {
CC1Args.push_back("-internal-isystem");
CC1Args.push_back(DriverArgs.MakeArgString(Path));
}
/// Utility function to add a system include directory with extern "C"
/// semantics to CC1 arguments.
///
/// Note that this should be used rarely, and only for directories that
/// historically and for legacy reasons are treated as having implicit extern
/// "C" semantics. These semantics are *ignored* by and large today, but its
/// important to preserve the preprocessor changes resulting from the
/// classification.
/*static*/ void ToolChain::addExternCSystemInclude(const ArgList &DriverArgs,
ArgStringList &CC1Args,
const Twine &Path) {
CC1Args.push_back("-internal-externc-isystem");
CC1Args.push_back(DriverArgs.MakeArgString(Path));
}
void ToolChain::addExternCSystemIncludeIfExists(const ArgList &DriverArgs,
ArgStringList &CC1Args,
const Twine &Path) {
if (llvm::sys::fs::exists(Path))
addExternCSystemInclude(DriverArgs, CC1Args, Path);
}
/// Utility function to add a list of system include directories to CC1.
/*static*/ void ToolChain::addSystemIncludes(const ArgList &DriverArgs,
ArgStringList &CC1Args,
ArrayRef<StringRef> Paths) {
for (const auto Path : Paths) {
CC1Args.push_back("-internal-isystem");
CC1Args.push_back(DriverArgs.MakeArgString(Path));
}
}
void ToolChain::AddClangCXXStdlibIncludeArgs(const ArgList &DriverArgs,
ArgStringList &CC1Args) const {
// Header search paths should be handled by each of the subclasses.
// Historically, they have not been, and instead have been handled inside of
// the CC1-layer frontend. As the logic is hoisted out, this generic function
// will slowly stop being called.
//
// While it is being called, replicate a bit of a hack to propagate the
// '-stdlib=' flag down to CC1 so that it can in turn customize the C++
// header search paths with it. Once all systems are overriding this
// function, the CC1 flag and this line can be removed.
DriverArgs.AddAllArgs(CC1Args, options::OPT_stdlib_EQ);
}
bool ToolChain::ShouldLinkCXXStdlib(const llvm::opt::ArgList &Args) const {
return getDriver().CCCIsCXX() &&
!Args.hasArg(options::OPT_nostdlib, options::OPT_nodefaultlibs,
options::OPT_nostdlibxx);
}
void ToolChain::AddCXXStdlibLibArgs(const ArgList &Args,
ArgStringList &CmdArgs) const {
assert(!Args.hasArg(options::OPT_nostdlibxx) &&
"should not have called this");
CXXStdlibType Type = GetCXXStdlibType(Args);
switch (Type) {
case ToolChain::CST_Libcxx:
CmdArgs.push_back("-lc++");
break;
case ToolChain::CST_Libstdcxx:
CmdArgs.push_back("-lstdc++");
break;
}
}
void ToolChain::AddFilePathLibArgs(const ArgList &Args,
ArgStringList &CmdArgs) const {
for (const auto &LibPath : getLibraryPaths())
if (LibPath.length() > 0)
CmdArgs.push_back(Args.MakeArgString(
StringRef("-L") + llvm::sys::path::convert_to_slash(LibPath)));
for (const auto &LibPath : getFilePaths())
if (LibPath.length() > 0)
CmdArgs.push_back(Args.MakeArgString(
StringRef("-L") + llvm::sys::path::convert_to_slash(LibPath)));
}
void ToolChain::AddCCKextLibArgs(const ArgList &Args,
ArgStringList &CmdArgs) const {
CmdArgs.push_back("-lcc_kext");
}
bool ToolChain::AddFastMathRuntimeIfAvailable(const ArgList &Args,
ArgStringList &CmdArgs) const {
// Do not check for -fno-fast-math or -fno-unsafe-math when -Ofast passed
// (to keep the linker options consistent with gcc and clang itself).
if (!isOptimizationLevelFast(Args)) {
// Check if -ffast-math or -funsafe-math.
Arg *A =
Args.getLastArg(options::OPT_ffast_math, options::OPT_fno_fast_math,
options::OPT_funsafe_math_optimizations,
options::OPT_fno_unsafe_math_optimizations);
if (!A || A->getOption().getID() == options::OPT_fno_fast_math ||
A->getOption().getID() == options::OPT_fno_unsafe_math_optimizations)
return false;
}
// If crtfastmath.o exists add it to the arguments.
std::string Path = GetFilePath("crtfastmath.o");
if (Path == "crtfastmath.o") // Not found.
return false;
CmdArgs.push_back(Args.MakeArgString(Path));
return true;
}
SanitizerMask ToolChain::getSupportedSanitizers() const {
// Return sanitizers which don't require runtime support and are not
// platform dependent.
using namespace SanitizerKind;
SanitizerMask Res = (Undefined & ~Vptr & ~Function) | (CFI & ~CFIICall) |
CFICastStrict | UnsignedIntegerOverflow |
ImplicitConversion | Nullability | LocalBounds;
if (getTriple().getArch() == llvm::Triple::x86 ||
getTriple().getArch() == llvm::Triple::x86_64 ||
getTriple().getArch() == llvm::Triple::arm ||
getTriple().getArch() == llvm::Triple::aarch64 ||
getTriple().getArch() == llvm::Triple::wasm32 ||
getTriple().getArch() == llvm::Triple::wasm64)
Res |= CFIICall;
if (getTriple().getArch() == llvm::Triple::x86_64 ||
getTriple().getArch() == llvm::Triple::aarch64)
Res |= ShadowCallStack;
return Res;
}
void ToolChain::AddCudaIncludeArgs(const ArgList &DriverArgs,
ArgStringList &CC1Args) const {}
void ToolChain::AddIAMCUIncludeArgs(const ArgList &DriverArgs,
ArgStringList &CC1Args) const {}
static VersionTuple separateMSVCFullVersion(unsigned Version) {
if (Version < 100)
return VersionTuple(Version);
if (Version < 10000)
return VersionTuple(Version / 100, Version % 100);
unsigned Build = 0, Factor = 1;
for (; Version > 10000; Version = Version / 10, Factor = Factor * 10)
Build = Build + (Version % 10) * Factor;
return VersionTuple(Version / 100, Version % 100, Build);
}
VersionTuple
ToolChain::computeMSVCVersion(const Driver *D,
const llvm::opt::ArgList &Args) const {
const Arg *MSCVersion = Args.getLastArg(options::OPT_fmsc_version);
const Arg *MSCompatibilityVersion =
Args.getLastArg(options::OPT_fms_compatibility_version);
if (MSCVersion && MSCompatibilityVersion) {
if (D)
D->Diag(diag::err_drv_argument_not_allowed_with)
<< MSCVersion->getAsString(Args)
<< MSCompatibilityVersion->getAsString(Args);
return VersionTuple();
}
if (MSCompatibilityVersion) {
VersionTuple MSVT;
if (MSVT.tryParse(MSCompatibilityVersion->getValue())) {
if (D)
D->Diag(diag::err_drv_invalid_value)
<< MSCompatibilityVersion->getAsString(Args)
<< MSCompatibilityVersion->getValue();
} else {
return MSVT;
}
}
if (MSCVersion) {
unsigned Version = 0;
if (StringRef(MSCVersion->getValue()).getAsInteger(10, Version)) {
if (D)
D->Diag(diag::err_drv_invalid_value)
<< MSCVersion->getAsString(Args) << MSCVersion->getValue();
} else {
return separateMSVCFullVersion(Version);
}
}
return VersionTuple();
}
llvm::opt::DerivedArgList *ToolChain::TranslateOpenMPTargetArgs(
const llvm::opt::DerivedArgList &Args, bool SameTripleAsHost,
SmallVectorImpl<llvm::opt::Arg *> &AllocatedArgs) const {
DerivedArgList *DAL = new DerivedArgList(Args.getBaseArgs());
const OptTable &Opts = getDriver().getOpts();
bool Modified = false;
// Handle -Xopenmp-target flags
for (auto *A : Args) {
// Exclude flags which may only apply to the host toolchain.
// Do not exclude flags when the host triple (AuxTriple)
// matches the current toolchain triple. If it is not present
// at all, target and host share a toolchain.
if (A->getOption().matches(options::OPT_m_Group)) {
if (SameTripleAsHost)
DAL->append(A);
else
Modified = true;
continue;
}
unsigned Index;
unsigned Prev;
bool XOpenMPTargetNoTriple =
A->getOption().matches(options::OPT_Xopenmp_target);
if (A->getOption().matches(options::OPT_Xopenmp_target_EQ)) {
// Passing device args: -Xopenmp-target=<triple> -opt=val.
if (A->getValue(0) == getTripleString())
Index = Args.getBaseArgs().MakeIndex(A->getValue(1));
else
continue;
} else if (XOpenMPTargetNoTriple) {
// Passing device args: -Xopenmp-target -opt=val.
Index = Args.getBaseArgs().MakeIndex(A->getValue(0));
} else {
DAL->append(A);
continue;
}
// Parse the argument to -Xopenmp-target.
Prev = Index;
std::unique_ptr<Arg> XOpenMPTargetArg(Opts.ParseOneArg(Args, Index));
if (!XOpenMPTargetArg || Index > Prev + 1) {
getDriver().Diag(diag::err_drv_invalid_Xopenmp_target_with_args)
<< A->getAsString(Args);
continue;
}
if (XOpenMPTargetNoTriple && XOpenMPTargetArg &&
Args.getAllArgValues(options::OPT_fopenmp_targets_EQ).size() != 1) {
getDriver().Diag(diag::err_drv_Xopenmp_target_missing_triple);
continue;
}
XOpenMPTargetArg->setBaseArg(A);
A = XOpenMPTargetArg.release();
AllocatedArgs.push_back(A);
DAL->append(A);
Modified = true;
}
if (Modified)
return DAL;
delete DAL;
return nullptr;
}
Reference in New Issue View Git Blame Copy Permalink