504 lines
17 KiB
C++
504 lines
17 KiB
C++
//===--- 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 "Tools.h"
|
|
#include "clang/Basic/ObjCRuntime.h"
|
|
#include "clang/Driver/Action.h"
|
|
#include "clang/Driver/Driver.h"
|
|
#include "clang/Driver/DriverDiagnostic.h"
|
|
#include "clang/Driver/Options.h"
|
|
#include "clang/Driver/SanitizerArgs.h"
|
|
#include "clang/Driver/ToolChain.h"
|
|
#include "llvm/ADT/SmallString.h"
|
|
#include "llvm/ADT/StringSwitch.h"
|
|
#include "llvm/Option/Arg.h"
|
|
#include "llvm/Option/ArgList.h"
|
|
#include "llvm/Option/Option.h"
|
|
#include "llvm/Support/ErrorHandling.h"
|
|
#include "llvm/Support/FileSystem.h"
|
|
using namespace clang::driver;
|
|
using namespace clang;
|
|
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_EnabledExplicitly;
|
|
else
|
|
return ToolChain::RM_DisabledExplicitly;
|
|
}
|
|
|
|
// -frtti is default, except for the PS4 CPU.
|
|
if (!Triple.isPS4CPU())
|
|
return ToolChain::RM_EnabledImplicitly;
|
|
|
|
// On the PS4, turning on c++ exceptions turns on rtti.
|
|
// We're assuming that, if we see -fexceptions, rtti gets turned on.
|
|
Arg *Exceptions = Args.getLastArgNoClaim(
|
|
options::OPT_fcxx_exceptions, options::OPT_fno_cxx_exceptions,
|
|
options::OPT_fexceptions, options::OPT_fno_exceptions);
|
|
if (Exceptions &&
|
|
(Exceptions->getOption().matches(options::OPT_fexceptions) ||
|
|
Exceptions->getOption().matches(options::OPT_fcxx_exceptions)))
|
|
return ToolChain::RM_EnabledImplicitly;
|
|
|
|
return ToolChain::RM_DisabledImplicitly;
|
|
}
|
|
|
|
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)) {
|
|
if (Arg *A = Args.getLastArg(options::OPT_mthread_model))
|
|
if (!isThreadModelSupported(A->getValue()))
|
|
D.Diag(diag::err_drv_invalid_thread_model_for_target)
|
|
<< A->getValue() << A->getAsString(Args);
|
|
}
|
|
|
|
ToolChain::~ToolChain() {
|
|
}
|
|
|
|
const Driver &ToolChain::getDriver() const {
|
|
return D;
|
|
}
|
|
|
|
bool ToolChain::useIntegratedAs() const {
|
|
return Args.hasFlag(options::OPT_fintegrated_as,
|
|
options::OPT_fno_integrated_as,
|
|
IsIntegratedAssemblerDefault());
|
|
}
|
|
|
|
const SanitizerArgs& ToolChain::getSanitizerArgs() const {
|
|
if (!SanitizerArguments.get())
|
|
SanitizerArguments.reset(new SanitizerArgs(*this, Args));
|
|
return *SanitizerArguments.get();
|
|
}
|
|
|
|
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();
|
|
}
|
|
}
|
|
|
|
bool ToolChain::IsUnwindTablesDefault() 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::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::CudaDeviceClass:
|
|
case Action::CudaHostClass:
|
|
case Action::LipoJobClass:
|
|
case Action::DsymutilJobClass:
|
|
case Action::VerifyDebugInfoJobClass:
|
|
llvm_unreachable("Invalid tool kind.");
|
|
|
|
case Action::CompileJobClass:
|
|
case Action::PrecompileJobClass:
|
|
case Action::PreprocessJobClass:
|
|
case Action::AnalyzeJobClass:
|
|
case Action::MigrateJobClass:
|
|
case Action::VerifyPCHJobClass:
|
|
case Action::BackendJobClass:
|
|
return getClang();
|
|
}
|
|
|
|
llvm_unreachable("Invalid tool kind.");
|
|
}
|
|
|
|
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 D.GetFilePath(Name, *this);
|
|
|
|
}
|
|
|
|
std::string ToolChain::GetProgramPath(const char *Name) const {
|
|
return D.GetProgramPath(Name, *this);
|
|
}
|
|
|
|
std::string ToolChain::GetLinkerPath() const {
|
|
if (Arg *A = Args.getLastArg(options::OPT_fuse_ld_EQ)) {
|
|
StringRef Suffix = A->getValue();
|
|
|
|
// If we're passed -fuse-ld= with no argument, or with the argument ld,
|
|
// then use whatever the default system linker is.
|
|
if (Suffix.empty() || Suffix == "ld")
|
|
return GetProgramPath("ld");
|
|
|
|
llvm::SmallString<8> LinkerName("ld.");
|
|
LinkerName.append(Suffix);
|
|
|
|
std::string LinkerPath(GetProgramPath(LinkerName.c_str()));
|
|
if (llvm::sys::fs::exists(LinkerPath))
|
|
return LinkerPath;
|
|
|
|
getDriver().Diag(diag::err_drv_invalid_linker_name) << A->getAsString(Args);
|
|
return "";
|
|
}
|
|
|
|
return GetProgramPath("ld");
|
|
}
|
|
|
|
|
|
types::ID ToolChain::LookupTypeForExtension(const char *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());
|
|
}
|
|
|
|
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 ThumbDefault = Suffix.startswith("v6m") || Suffix.startswith("v7m") ||
|
|
Suffix.startswith("v7em") ||
|
|
(Suffix.startswith("v7") && getTriple().isOSBinFormatMachO());
|
|
// FIXME: this is invalid for WindowsCE
|
|
if (getTriple().isOSWindows())
|
|
ThumbDefault = true;
|
|
std::string ArchName;
|
|
if (IsBigEndian)
|
|
ArchName = "armeb";
|
|
else
|
|
ArchName = "arm";
|
|
|
|
// Assembly files should start in ARM mode.
|
|
if (InputType != types::TY_PP_Asm &&
|
|
Args.hasFlag(options::OPT_mthumb, options::OPT_mno_thumb, ThumbDefault))
|
|
{
|
|
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) const {
|
|
}
|
|
|
|
void ToolChain::addClangWarningOptions(ArgStringList &CC1Args) const {}
|
|
|
|
ToolChain::RuntimeLibType ToolChain::GetRuntimeLibType(
|
|
const ArgList &Args) const
|
|
{
|
|
if (Arg *A = Args.getLastArg(options::OPT_rtlib_EQ)) {
|
|
StringRef Value = A->getValue();
|
|
if (Value == "compiler-rt")
|
|
return ToolChain::RLT_CompilerRT;
|
|
if (Value == "libgcc")
|
|
return ToolChain::RLT_Libgcc;
|
|
getDriver().Diag(diag::err_drv_invalid_rtlib_name)
|
|
<< A->getAsString(Args);
|
|
}
|
|
|
|
return GetDefaultRuntimeLibType();
|
|
}
|
|
|
|
ToolChain::CXXStdlibType ToolChain::GetCXXStdlibType(const ArgList &Args) const{
|
|
if (Arg *A = Args.getLastArg(options::OPT_stdlib_EQ)) {
|
|
StringRef Value = A->getValue();
|
|
if (Value == "libc++")
|
|
return ToolChain::CST_Libcxx;
|
|
if (Value == "libstdc++")
|
|
return ToolChain::CST_Libstdcxx;
|
|
getDriver().Diag(diag::err_drv_invalid_stdlib_name)
|
|
<< A->getAsString(Args);
|
|
}
|
|
|
|
return ToolChain::CST_Libstdcxx;
|
|
}
|
|
|
|
/// \brief 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));
|
|
}
|
|
|
|
/// \brief 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);
|
|
}
|
|
|
|
/// \brief 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 (StringRef 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);
|
|
}
|
|
|
|
void ToolChain::AddCXXStdlibLibArgs(const ArgList &Args,
|
|
ArgStringList &CmdArgs) const {
|
|
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::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 | LocalBounds;
|
|
if (getTriple().getArch() == llvm::Triple::x86 ||
|
|
getTriple().getArch() == llvm::Triple::x86_64)
|
|
Res |= CFIICall;
|
|
return Res;
|
|
}
|