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Diffstat (limited to 'lib/Driver/ToolChains/Clang.cpp')
| -rw-r--r-- | lib/Driver/ToolChains/Clang.cpp | 5172 |
1 files changed, 5172 insertions, 0 deletions
diff --git a/lib/Driver/ToolChains/Clang.cpp b/lib/Driver/ToolChains/Clang.cpp new file mode 100644 index 0000000000..fcb8c3ede1 --- /dev/null +++ b/lib/Driver/ToolChains/Clang.cpp @@ -0,0 +1,5172 @@ +//===--- LLVM.cpp - Clang+LLVM ToolChain Implementations --------*- C++ -*-===// +// +// The LLVM Compiler Infrastructure +// +// This file is distributed under the University of Illinois Open Source +// License. See LICENSE.TXT for details. +// +//===----------------------------------------------------------------------===// + +#include "Clang.h" +#include "Arch/AArch64.h" +#include "Arch/ARM.h" +#include "Arch/Mips.h" +#include "Arch/PPC.h" +#include "Arch/Sparc.h" +#include "Arch/SystemZ.h" +#include "Arch/X86.h" +#include "CommonArgs.h" +#include "Hexagon.h" +#include "InputInfo.h" +#include "PS4CPU.h" +#include "clang/Basic/CharInfo.h" +#include "clang/Basic/LangOptions.h" +#include "clang/Basic/ObjCRuntime.h" +#include "clang/Basic/Version.h" +#include "clang/Config/config.h" +#include "clang/Driver/DriverDiagnostic.h" +#include "clang/Driver/Options.h" +#include "clang/Driver/SanitizerArgs.h" +#include "llvm/ADT/StringExtras.h" +#include "llvm/Option/ArgList.h" +#include "llvm/Support/CodeGen.h" +#include "llvm/Support/Compression.h" +#include "llvm/Support/FileSystem.h" +#include "llvm/Support/Path.h" +#include "llvm/Support/Process.h" +#include "llvm/Support/YAMLParser.h" + +#ifdef LLVM_ON_UNIX +#include <unistd.h> // For getuid(). +#endif + +using namespace clang::driver; +using namespace clang::driver::tools; +using namespace clang; +using namespace llvm::opt; + +static void CheckPreprocessingOptions(const Driver &D, const ArgList &Args) { + if (Arg *A = + Args.getLastArg(clang::driver::options::OPT_C, options::OPT_CC)) { + if (!Args.hasArg(options::OPT_E) && !Args.hasArg(options::OPT__SLASH_P) && + !Args.hasArg(options::OPT__SLASH_EP) && !D.CCCIsCPP()) { + D.Diag(clang::diag::err_drv_argument_only_allowed_with) + << A->getBaseArg().getAsString(Args) + << (D.IsCLMode() ? "/E, /P or /EP" : "-E"); + } + } +} + +static void CheckCodeGenerationOptions(const Driver &D, const ArgList &Args) { + // In gcc, only ARM checks this, but it seems reasonable to check universally. + if (Args.hasArg(options::OPT_static)) + if (const Arg *A = + Args.getLastArg(options::OPT_dynamic, options::OPT_mdynamic_no_pic)) + D.Diag(diag::err_drv_argument_not_allowed_with) << A->getAsString(Args) + << "-static"; +} + +// Add backslashes to escape spaces and other backslashes. +// This is used for the space-separated argument list specified with +// the -dwarf-debug-flags option. +static void EscapeSpacesAndBackslashes(const char *Arg, + SmallVectorImpl<char> &Res) { + for (; *Arg; ++Arg) { + switch (*Arg) { + default: + break; + case ' ': + case '\\': + Res.push_back('\\'); + break; + } + Res.push_back(*Arg); + } +} + +// Quote target names for inclusion in GNU Make dependency files. +// Only the characters '$', '#', ' ', '\t' are quoted. +static void QuoteTarget(StringRef Target, SmallVectorImpl<char> &Res) { + for (unsigned i = 0, e = Target.size(); i != e; ++i) { + switch (Target[i]) { + case ' ': + case '\t': + // Escape the preceding backslashes + for (int j = i - 1; j >= 0 && Target[j] == '\\'; --j) + Res.push_back('\\'); + + // Escape the space/tab + Res.push_back('\\'); + break; + case '$': + Res.push_back('$'); + break; + case '#': + Res.push_back('\\'); + break; + default: + break; + } + + Res.push_back(Target[i]); + } +} + +/// Apply \a Work on the current tool chain \a RegularToolChain and any other +/// offloading tool chain that is associated with the current action \a JA. +static void +forAllAssociatedToolChains(Compilation &C, const JobAction &JA, + const ToolChain &RegularToolChain, + llvm::function_ref<void(const ToolChain &)> Work) { + // Apply Work on the current/regular tool chain. + Work(RegularToolChain); + + // Apply Work on all the offloading tool chains associated with the current + // action. + if (JA.isHostOffloading(Action::OFK_Cuda)) + Work(*C.getSingleOffloadToolChain<Action::OFK_Cuda>()); + else if (JA.isDeviceOffloading(Action::OFK_Cuda)) + Work(*C.getSingleOffloadToolChain<Action::OFK_Host>()); + + // + // TODO: Add support for other offloading programming models here. + // +} + +/// This is a helper function for validating the optional refinement step +/// parameter in reciprocal argument strings. Return false if there is an error +/// parsing the refinement step. Otherwise, return true and set the Position +/// of the refinement step in the input string. +static bool getRefinementStep(StringRef In, const Driver &D, + const Arg &A, size_t &Position) { + const char RefinementStepToken = ':'; + Position = In.find(RefinementStepToken); + if (Position != StringRef::npos) { + StringRef Option = A.getOption().getName(); + StringRef RefStep = In.substr(Position + 1); + // Allow exactly one numeric character for the additional refinement + // step parameter. This is reasonable for all currently-supported + // operations and architectures because we would expect that a larger value + // of refinement steps would cause the estimate "optimization" to + // under-perform the native operation. Also, if the estimate does not + // converge quickly, it probably will not ever converge, so further + // refinement steps will not produce a better answer. + if (RefStep.size() != 1) { + D.Diag(diag::err_drv_invalid_value) << Option << RefStep; + return false; + } + char RefStepChar = RefStep[0]; + if (RefStepChar < '0' || RefStepChar > '9') { + D.Diag(diag::err_drv_invalid_value) << Option << RefStep; + return false; + } + } + return true; +} + +/// The -mrecip flag requires processing of many optional parameters. +static void ParseMRecip(const Driver &D, const ArgList &Args, + ArgStringList &OutStrings) { + StringRef DisabledPrefixIn = "!"; + StringRef DisabledPrefixOut = "!"; + StringRef EnabledPrefixOut = ""; + StringRef Out = "-mrecip="; + + Arg *A = Args.getLastArg(options::OPT_mrecip, options::OPT_mrecip_EQ); + if (!A) + return; + + unsigned NumOptions = A->getNumValues(); + if (NumOptions == 0) { + // No option is the same as "all". + OutStrings.push_back(Args.MakeArgString(Out + "all")); + return; + } + + // Pass through "all", "none", or "default" with an optional refinement step. + if (NumOptions == 1) { + StringRef Val = A->getValue(0); + size_t RefStepLoc; + if (!getRefinementStep(Val, D, *A, RefStepLoc)) + return; + StringRef ValBase = Val.slice(0, RefStepLoc); + if (ValBase == "all" || ValBase == "none" || ValBase == "default") { + OutStrings.push_back(Args.MakeArgString(Out + Val)); + return; + } + } + + // Each reciprocal type may be enabled or disabled individually. + // Check each input value for validity, concatenate them all back together, + // and pass through. + + llvm::StringMap<bool> OptionStrings; + OptionStrings.insert(std::make_pair("divd", false)); + OptionStrings.insert(std::make_pair("divf", false)); + OptionStrings.insert(std::make_pair("vec-divd", false)); + OptionStrings.insert(std::make_pair("vec-divf", false)); + OptionStrings.insert(std::make_pair("sqrtd", false)); + OptionStrings.insert(std::make_pair("sqrtf", false)); + OptionStrings.insert(std::make_pair("vec-sqrtd", false)); + OptionStrings.insert(std::make_pair("vec-sqrtf", false)); + + for (unsigned i = 0; i != NumOptions; ++i) { + StringRef Val = A->getValue(i); + + bool IsDisabled = Val.startswith(DisabledPrefixIn); + // Ignore the disablement token for string matching. + if (IsDisabled) + Val = Val.substr(1); + + size_t RefStep; + if (!getRefinementStep(Val, D, *A, RefStep)) + return; + + StringRef ValBase = Val.slice(0, RefStep); + llvm::StringMap<bool>::iterator OptionIter = OptionStrings.find(ValBase); + if (OptionIter == OptionStrings.end()) { + // Try again specifying float suffix. + OptionIter = OptionStrings.find(ValBase.str() + 'f'); + if (OptionIter == OptionStrings.end()) { + // The input name did not match any known option string. + D.Diag(diag::err_drv_unknown_argument) << Val; + return; + } + // The option was specified without a float or double suffix. + // Make sure that the double entry was not already specified. + // The float entry will be checked below. + if (OptionStrings[ValBase.str() + 'd']) { + D.Diag(diag::err_drv_invalid_value) << A->getOption().getName() << Val; + return; + } + } + + if (OptionIter->second == true) { + // Duplicate option specified. + D.Diag(diag::err_drv_invalid_value) << A->getOption().getName() << Val; + return; + } + + // Mark the matched option as found. Do not allow duplicate specifiers. + OptionIter->second = true; + + // If the precision was not specified, also mark the double entry as found. + if (ValBase.back() != 'f' && ValBase.back() != 'd') + OptionStrings[ValBase.str() + 'd'] = true; + + // Build the output string. + StringRef Prefix = IsDisabled ? DisabledPrefixOut : EnabledPrefixOut; + Out = Args.MakeArgString(Out + Prefix + Val); + if (i != NumOptions - 1) + Out = Args.MakeArgString(Out + ","); + } + + OutStrings.push_back(Args.MakeArgString(Out)); +} + +static void getHexagonTargetFeatures(const ArgList &Args, + std::vector<StringRef> &Features) { + handleTargetFeaturesGroup(Args, Features, + options::OPT_m_hexagon_Features_Group); + + bool UseLongCalls = false; + if (Arg *A = Args.getLastArg(options::OPT_mlong_calls, + options::OPT_mno_long_calls)) { + if (A->getOption().matches(options::OPT_mlong_calls)) + UseLongCalls = true; + } + + Features.push_back(UseLongCalls ? "+long-calls" : "-long-calls"); +} + +static void getWebAssemblyTargetFeatures(const ArgList &Args, + std::vector<StringRef> &Features) { + handleTargetFeaturesGroup(Args, Features, options::OPT_m_wasm_Features_Group); +} + +static void getAMDGPUTargetFeatures(const Driver &D, const ArgList &Args, + std::vector<StringRef> &Features) { + if (const Arg *dAbi = Args.getLastArg(options::OPT_mamdgpu_debugger_abi)) { + StringRef value = dAbi->getValue(); + if (value == "1.0") { + Features.push_back("+amdgpu-debugger-insert-nops"); + Features.push_back("+amdgpu-debugger-reserve-regs"); + Features.push_back("+amdgpu-debugger-emit-prologue"); + } else { + D.Diag(diag::err_drv_clang_unsupported) << dAbi->getAsString(Args); + } + } + + handleTargetFeaturesGroup( + Args, Features, options::OPT_m_amdgpu_Features_Group); +} + +static void getTargetFeatures(const ToolChain &TC, const llvm::Triple &Triple, + const ArgList &Args, ArgStringList &CmdArgs, + bool ForAS) { + const Driver &D = TC.getDriver(); + std::vector<StringRef> Features; + switch (Triple.getArch()) { + default: + break; + case llvm::Triple::mips: + case llvm::Triple::mipsel: + case llvm::Triple::mips64: + case llvm::Triple::mips64el: + mips::getMIPSTargetFeatures(D, Triple, Args, Features); + break; + + case llvm::Triple::arm: + case llvm::Triple::armeb: + case llvm::Triple::thumb: + case llvm::Triple::thumbeb: + arm::getARMTargetFeatures(TC, Triple, Args, CmdArgs, Features, ForAS); + break; + + case llvm::Triple::ppc: + case llvm::Triple::ppc64: + case llvm::Triple::ppc64le: + ppc::getPPCTargetFeatures(D, Triple, Args, Features); + break; + case llvm::Triple::systemz: + systemz::getSystemZTargetFeatures(Args, Features); + break; + case llvm::Triple::aarch64: + case llvm::Triple::aarch64_be: + aarch64::getAArch64TargetFeatures(D, Args, Features); + break; + case llvm::Triple::x86: + case llvm::Triple::x86_64: + x86::getX86TargetFeatures(D, Triple, Args, Features); + break; + case llvm::Triple::hexagon: + getHexagonTargetFeatures(Args, Features); + break; + case llvm::Triple::wasm32: + case llvm::Triple::wasm64: + getWebAssemblyTargetFeatures(Args, Features); + break; + case llvm::Triple::sparc: + case llvm::Triple::sparcel: + case llvm::Triple::sparcv9: + sparc::getSparcTargetFeatures(D, Args, Features); + break; + case llvm::Triple::r600: + case llvm::Triple::amdgcn: + getAMDGPUTargetFeatures(D, Args, Features); + break; + } + + // Find the last of each feature. + llvm::StringMap<unsigned> LastOpt; + for (unsigned I = 0, N = Features.size(); I < N; ++I) { + StringRef Name = Features[I]; + assert(Name[0] == '-' || Name[0] == '+'); + LastOpt[Name.drop_front(1)] = I; + } + + for (unsigned I = 0, N = Features.size(); I < N; ++I) { + // If this feature was overridden, ignore it. + StringRef Name = Features[I]; + llvm::StringMap<unsigned>::iterator LastI = LastOpt.find(Name.drop_front(1)); + assert(LastI != LastOpt.end()); + unsigned Last = LastI->second; + if (Last != I) + continue; + + CmdArgs.push_back("-target-feature"); + CmdArgs.push_back(Name.data()); + } +} + +static bool +shouldUseExceptionTablesForObjCExceptions(const ObjCRuntime &runtime, + const llvm::Triple &Triple) { + // We use the zero-cost exception tables for Objective-C if the non-fragile + // ABI is enabled or when compiling for x86_64 and ARM on Snow Leopard and + // later. + if (runtime.isNonFragile()) + return true; + + if (!Triple.isMacOSX()) + return false; + + return (!Triple.isMacOSXVersionLT(10, 5) && + (Triple.getArch() == llvm::Triple::x86_64 || + Triple.getArch() == llvm::Triple::arm)); +} + +/// Adds exception related arguments to the driver command arguments. There's a +/// master flag, -fexceptions and also language specific flags to enable/disable +/// C++ and Objective-C exceptions. This makes it possible to for example +/// disable C++ exceptions but enable Objective-C exceptions. +static void addExceptionArgs(const ArgList &Args, types::ID InputType, + const ToolChain &TC, bool KernelOrKext, + const ObjCRuntime &objcRuntime, + ArgStringList &CmdArgs) { + const Driver &D = TC.getDriver(); + const llvm::Triple &Triple = TC.getTriple(); + + if (KernelOrKext) { + // -mkernel and -fapple-kext imply no exceptions, so claim exception related + // arguments now to avoid warnings about unused arguments. + Args.ClaimAllArgs(options::OPT_fexceptions); + Args.ClaimAllArgs(options::OPT_fno_exceptions); + Args.ClaimAllArgs(options::OPT_fobjc_exceptions); + Args.ClaimAllArgs(options::OPT_fno_objc_exceptions); + Args.ClaimAllArgs(options::OPT_fcxx_exceptions); + Args.ClaimAllArgs(options::OPT_fno_cxx_exceptions); + return; + } + + // See if the user explicitly enabled exceptions. + bool EH = Args.hasFlag(options::OPT_fexceptions, options::OPT_fno_exceptions, + false); + + // Obj-C exceptions are enabled by default, regardless of -fexceptions. This + // is not necessarily sensible, but follows GCC. + if (types::isObjC(InputType) && + Args.hasFlag(options::OPT_fobjc_exceptions, + options::OPT_fno_objc_exceptions, true)) { + CmdArgs.push_back("-fobjc-exceptions"); + + EH |= shouldUseExceptionTablesForObjCExceptions(objcRuntime, Triple); + } + + if (types::isCXX(InputType)) { + // Disable C++ EH by default on XCore and PS4. + bool CXXExceptionsEnabled = + Triple.getArch() != llvm::Triple::xcore && !Triple.isPS4CPU(); + Arg *ExceptionArg = Args.getLastArg( + options::OPT_fcxx_exceptions, options::OPT_fno_cxx_exceptions, + options::OPT_fexceptions, options::OPT_fno_exceptions); + if (ExceptionArg) + CXXExceptionsEnabled = + ExceptionArg->getOption().matches(options::OPT_fcxx_exceptions) || + ExceptionArg->getOption().matches(options::OPT_fexceptions); + + if (CXXExceptionsEnabled) { + if (Triple.isPS4CPU()) { + ToolChain::RTTIMode RTTIMode = TC.getRTTIMode(); + assert(ExceptionArg && + "On the PS4 exceptions should only be enabled if passing " + "an argument"); + if (RTTIMode == ToolChain::RM_DisabledExplicitly) { + const Arg *RTTIArg = TC.getRTTIArg(); + assert(RTTIArg && "RTTI disabled explicitly but no RTTIArg!"); + D.Diag(diag::err_drv_argument_not_allowed_with) + << RTTIArg->getAsString(Args) << ExceptionArg->getAsString(Args); + } else if (RTTIMode == ToolChain::RM_EnabledImplicitly) + D.Diag(diag::warn_drv_enabling_rtti_with_exceptions); + } else + assert(TC.getRTTIMode() != ToolChain::RM_DisabledImplicitly); + + CmdArgs.push_back("-fcxx-exceptions"); + + EH = true; + } + } + + if (EH) + CmdArgs.push_back("-fexceptions"); +} + +static bool ShouldDisableAutolink(const ArgList &Args, const ToolChain &TC) { + bool Default = true; + if (TC.getTriple().isOSDarwin()) { + // The native darwin assembler doesn't support the linker_option directives, + // so we disable them if we think the .s file will be passed to it. + Default = TC.useIntegratedAs(); + } + return !Args.hasFlag(options::OPT_fautolink, options::OPT_fno_autolink, + Default); +} + +static bool ShouldDisableDwarfDirectory(const ArgList &Args, + const ToolChain &TC) { + bool UseDwarfDirectory = + Args.hasFlag(options::OPT_fdwarf_directory_asm, + options::OPT_fno_dwarf_directory_asm, TC.useIntegratedAs()); + return !UseDwarfDirectory; +} + +// Convert an arg of the form "-gN" or "-ggdbN" or one of their aliases +// to the corresponding DebugInfoKind. +static codegenoptions::DebugInfoKind DebugLevelToInfoKind(const Arg &A) { + assert(A.getOption().matches(options::OPT_gN_Group) && + "Not a -g option that specifies a debug-info level"); + if (A.getOption().matches(options::OPT_g0) || + A.getOption().matches(options::OPT_ggdb0)) + return codegenoptions::NoDebugInfo; + if (A.getOption().matches(options::OPT_gline_tables_only) || + A.getOption().matches(options::OPT_ggdb1)) + return codegenoptions::DebugLineTablesOnly; + return codegenoptions::LimitedDebugInfo; +} + +static bool mustUseNonLeafFramePointerForTarget(const llvm::Triple &Triple) { + switch (Triple.getArch()){ + default: + return false; + case llvm::Triple::arm: + case llvm::Triple::thumb: + // ARM Darwin targets require a frame pointer to be always present to aid + // offline debugging via backtraces. + return Triple.isOSDarwin(); + } +} + +static bool useFramePointerForTargetByDefault(const ArgList &Args, + const llvm::Triple &Triple) { + switch (Triple.getArch()) { + case llvm::Triple::xcore: + case llvm::Triple::wasm32: + case llvm::Triple::wasm64: + // XCore never wants frame pointers, regardless of OS. + // WebAssembly never wants frame pointers. + return false; + default: + break; + } + + if (Triple.isOSLinux() || Triple.getOS() == llvm::Triple::CloudABI) { + switch (Triple.getArch()) { + // Don't use a frame pointer on linux if optimizing for certain targets. + case llvm::Triple::mips64: + case llvm::Triple::mips64el: + case llvm::Triple::mips: + case llvm::Triple::mipsel: + case llvm::Triple::ppc: + case llvm::Triple::ppc64: + case llvm::Triple::ppc64le: + case llvm::Triple::systemz: + case llvm::Triple::x86: + case llvm::Triple::x86_64: + return !areOptimizationsEnabled(Args); + default: + return true; + } + } + + if (Triple.isOSWindows()) { + switch (Triple.getArch()) { + case llvm::Triple::x86: + return !areOptimizationsEnabled(Args); + case llvm::Triple::x86_64: + return Triple.isOSBinFormatMachO(); + case llvm::Triple::arm: + case llvm::Triple::thumb: + // Windows on ARM builds with FPO disabled to aid fast stack walking + return true; + default: + // All other supported Windows ISAs use xdata unwind information, so frame + // pointers are not generally useful. + return false; + } + } + + return true; +} + +static bool shouldUseFramePointer(const ArgList &Args, + const llvm::Triple &Triple) { + if (Arg *A = Args.getLastArg(options::OPT_fno_omit_frame_pointer, + options::OPT_fomit_frame_pointer)) + return A->getOption().matches(options::OPT_fno_omit_frame_pointer) || + mustUseNonLeafFramePointerForTarget(Triple); + + if (Args.hasArg(options::OPT_pg)) + return true; + + return useFramePointerForTargetByDefault(Args, Triple); +} + +static bool shouldUseLeafFramePointer(const ArgList &Args, + const llvm::Triple &Triple) { + if (Arg *A = Args.getLastArg(options::OPT_mno_omit_leaf_frame_pointer, + options::OPT_momit_leaf_frame_pointer)) + return A->getOption().matches(options::OPT_mno_omit_leaf_frame_pointer); + + if (Args.hasArg(options::OPT_pg)) + return true; + + if (Triple.isPS4CPU()) + return false; + + return useFramePointerForTargetByDefault(Args, Triple); +} + +/// Add a CC1 option to specify the debug compilation directory. +static void addDebugCompDirArg(const ArgList &Args, ArgStringList &CmdArgs) { + SmallString<128> cwd; + if (!llvm::sys::fs::current_path(cwd)) { + CmdArgs.push_back("-fdebug-compilation-dir"); + CmdArgs.push_back(Args.MakeArgString(cwd)); + } +} + +/// \brief Vectorize at all optimization levels greater than 1 except for -Oz. +/// For -Oz the loop vectorizer is disable, while the slp vectorizer is enabled. +static bool shouldEnableVectorizerAtOLevel(const ArgList &Args, bool isSlpVec) { + if (Arg *A = Args.getLastArg(options::OPT_O_Group)) { + if (A->getOption().matches(options::OPT_O4) || + A->getOption().matches(options::OPT_Ofast)) + return true; + + if (A->getOption().matches(options::OPT_O0)) + return false; + + assert(A->getOption().matches(options::OPT_O) && "Must have a -O flag"); + + // Vectorize -Os. + StringRef S(A->getValue()); + if (S == "s") + return true; + + // Don't vectorize -Oz, unless it's the slp vectorizer. + if (S == "z") + return isSlpVec; + + unsigned OptLevel = 0; + if (S.getAsInteger(10, OptLevel)) + return false; + + return OptLevel > 1; + } + + return false; +} + +/// Add -x lang to \p CmdArgs for \p Input. +static void addDashXForInput(const ArgList &Args, const InputInfo &Input, + ArgStringList &CmdArgs) { + // When using -verify-pch, we don't want to provide the type + // 'precompiled-header' if it was inferred from the file extension + if (Args.hasArg(options::OPT_verify_pch) && Input.getType() == types::TY_PCH) + return; + + CmdArgs.push_back("-x"); + if (Args.hasArg(options::OPT_rewrite_objc)) + CmdArgs.push_back(types::getTypeName(types::TY_PP_ObjCXX)); + else + CmdArgs.push_back(types::getTypeName(Input.getType())); +} + +static void appendUserToPath(SmallVectorImpl<char> &Result) { +#ifdef LLVM_ON_UNIX + const char *Username = getenv("LOGNAME"); +#else + const char *Username = getenv("USERNAME"); +#endif + if (Username) { + // Validate that LoginName can be used in a path, and get its length. + size_t Len = 0; + for (const char *P = Username; *P; ++P, ++Len) { + if (!clang::isAlphanumeric(*P) && *P != '_') { + Username = nullptr; + break; + } + } + + if (Username && Len > 0) { + Result.append(Username, Username + Len); + return; + } + } + +// Fallback to user id. +#ifdef LLVM_ON_UNIX + std::string UID = llvm::utostr(getuid()); +#else + // FIXME: Windows seems to have an 'SID' that might work. + std::string UID = "9999"; +#endif + Result.append(UID.begin(), UID.end()); +} + +static void addPGOAndCoverageFlags(Compilation &C, const Driver &D, + const InputInfo &Output, const ArgList &Args, + ArgStringList &CmdArgs) { + + auto *PGOGenerateArg = Args.getLastArg(options::OPT_fprofile_generate, + options::OPT_fprofile_generate_EQ, + options::OPT_fno_profile_generate); + if (PGOGenerateArg && + PGOGenerateArg->getOption().matches(options::OPT_fno_profile_generate)) + PGOGenerateArg = nullptr; + + auto *ProfileGenerateArg = Args.getLastArg( + options::OPT_fprofile_instr_generate, + options::OPT_fprofile_instr_generate_EQ, + options::OPT_fno_profile_instr_generate); + if (ProfileGenerateArg && + ProfileGenerateArg->getOption().matches( + options::OPT_fno_profile_instr_generate)) + ProfileGenerateArg = nullptr; + + if (PGOGenerateArg && ProfileGenerateArg) + D.Diag(diag::err_drv_argument_not_allowed_with) + << PGOGenerateArg->getSpelling() << ProfileGenerateArg->getSpelling(); + + auto *ProfileUseArg = getLastProfileUseArg(Args); + + if (PGOGenerateArg && ProfileUseArg) + D.Diag(diag::err_drv_argument_not_allowed_with) + << ProfileUseArg->getSpelling() << PGOGenerateArg->getSpelling(); + + if (ProfileGenerateArg && ProfileUseArg) + D.Diag(diag::err_drv_argument_not_allowed_with) + << ProfileGenerateArg->getSpelling() << ProfileUseArg->getSpelling(); + + if (ProfileGenerateArg) { + if (ProfileGenerateArg->getOption().matches( + options::OPT_fprofile_instr_generate_EQ)) + CmdArgs.push_back(Args.MakeArgString(Twine("-fprofile-instrument-path=") + + ProfileGenerateArg->getValue())); + // The default is to use Clang Instrumentation. + CmdArgs.push_back("-fprofile-instrument=clang"); + } + + if (PGOGenerateArg) { + CmdArgs.push_back("-fprofile-instrument=llvm"); + if (PGOGenerateArg->getOption().matches( + options::OPT_fprofile_generate_EQ)) { + SmallString<128> Path(PGOGenerateArg->getValue()); + llvm::sys::path::append(Path, "default_%m.profraw"); + CmdArgs.push_back( + Args.MakeArgString(Twine("-fprofile-instrument-path=") + Path)); + } + } + + if (ProfileUseArg) { + if (ProfileUseArg->getOption().matches(options::OPT_fprofile_instr_use_EQ)) + CmdArgs.push_back(Args.MakeArgString( + Twine("-fprofile-instrument-use-path=") + ProfileUseArg->getValue())); + else if ((ProfileUseArg->getOption().matches( + options::OPT_fprofile_use_EQ) || + ProfileUseArg->getOption().matches( + options::OPT_fprofile_instr_use))) { + SmallString<128> Path( + ProfileUseArg->getNumValues() == 0 ? "" : ProfileUseArg->getValue()); + if (Path.empty() || llvm::sys::fs::is_directory(Path)) + llvm::sys::path::append(Path, "default.profdata"); + CmdArgs.push_back( + Args.MakeArgString(Twine("-fprofile-instrument-use-path=") + Path)); + } + } + + if (Args.hasArg(options::OPT_ftest_coverage) || + Args.hasArg(options::OPT_coverage)) + CmdArgs.push_back("-femit-coverage-notes"); + if (Args.hasFlag(options::OPT_fprofile_arcs, options::OPT_fno_profile_arcs, + false) || + Args.hasArg(options::OPT_coverage)) + CmdArgs.push_back("-femit-coverage-data"); + + if (Args.hasFlag(options::OPT_fcoverage_mapping, + options::OPT_fno_coverage_mapping, false) && + !ProfileGenerateArg) + D.Diag(clang::diag::err_drv_argument_only_allowed_with) + << "-fcoverage-mapping" + << "-fprofile-instr-generate"; + + if (Args.hasFlag(options::OPT_fcoverage_mapping, + options::OPT_fno_coverage_mapping, false)) + CmdArgs.push_back("-fcoverage-mapping"); + + if (C.getArgs().hasArg(options::OPT_c) || + C.getArgs().hasArg(options::OPT_S)) { + if (Output.isFilename()) { + CmdArgs.push_back("-coverage-notes-file"); + SmallString<128> OutputFilename; + if (Arg *FinalOutput = C.getArgs().getLastArg(options::OPT_o)) + OutputFilename = FinalOutput->getValue(); + else + OutputFilename = llvm::sys::path::filename(Output.getBaseInput()); + SmallString<128> CoverageFilename = OutputFilename; + if (llvm::sys::path::is_relative(CoverageFilename)) { + SmallString<128> Pwd; + if (!llvm::sys::fs::current_path(Pwd)) { + llvm::sys::path::append(Pwd, CoverageFilename); + CoverageFilename.swap(Pwd); + } + } + llvm::sys::path::replace_extension(CoverageFilename, "gcno"); + CmdArgs.push_back(Args.MakeArgString(CoverageFilename)); + + // Leave -fprofile-dir= an unused argument unless .gcda emission is + // enabled. To be polite, with '-fprofile-arcs -fno-profile-arcs' consider + // the flag used. There is no -fno-profile-dir, so the user has no + // targeted way to suppress the warning. + if (Args.hasArg(options::OPT_fprofile_arcs) || + Args.hasArg(options::OPT_coverage)) { + CmdArgs.push_back("-coverage-data-file"); + if (Arg *FProfileDir = Args.getLastArg(options::OPT_fprofile_dir)) { + CoverageFilename = FProfileDir->getValue(); + llvm::sys::path::append(CoverageFilename, OutputFilename); + } + llvm::sys::path::replace_extension(CoverageFilename, "gcda"); + CmdArgs.push_back(Args.MakeArgString(CoverageFilename)); + } + } + } +} + +/// \brief Check whether the given input tree contains any compilation actions. +static bool ContainsCompileAction(const Action *A) { + if (isa<CompileJobAction>(A) || isa<BackendJobAction>(A)) + return true; + + for (const auto &AI : A->inputs()) + if (ContainsCompileAction(AI)) + return true; + + return false; +} + +/// \brief Check if -relax-all should be passed to the internal assembler. +/// This is done by default when compiling non-assembler source with -O0. +static bool UseRelaxAll(Compilation &C, const ArgList &Args) { + bool RelaxDefault = true; + + if (Arg *A = Args.getLastArg(options::OPT_O_Group)) + RelaxDefault = A->getOption().matches(options::OPT_O0); + + if (RelaxDefault) { + RelaxDefault = false; + for (const auto &Act : C.getActions()) { + if (ContainsCompileAction(Act)) { + RelaxDefault = true; + break; + } + } + } + + return Args.hasFlag(options::OPT_mrelax_all, options::OPT_mno_relax_all, + RelaxDefault); +} + +// Extract the integer N from a string spelled "-dwarf-N", returning 0 +// on mismatch. The StringRef input (rather than an Arg) allows +// for use by the "-Xassembler" option parser. +static unsigned DwarfVersionNum(StringRef ArgValue) { + return llvm::StringSwitch<unsigned>(ArgValue) + .Case("-gdwarf-2", 2) + .Case("-gdwarf-3", 3) + .Case("-gdwarf-4", 4) + .Case("-gdwarf-5", 5) + .Default(0); +} + +static void RenderDebugEnablingArgs(const ArgList &Args, ArgStringList &CmdArgs, + codegenoptions::DebugInfoKind DebugInfoKind, + unsigned DwarfVersion, + llvm::DebuggerKind DebuggerTuning) { + switch (DebugInfoKind) { + case codegenoptions::DebugLineTablesOnly: + CmdArgs.push_back("-debug-info-kind=line-tables-only"); + break; + case codegenoptions::LimitedDebugInfo: + CmdArgs.push_back("-debug-info-kind=limited"); + break; + case codegenoptions::FullDebugInfo: + CmdArgs.push_back("-debug-info-kind=standalone"); + break; + default: + break; + } + if (DwarfVersion > 0) + CmdArgs.push_back( + Args.MakeArgString("-dwarf-version=" + Twine(DwarfVersion))); + switch (DebuggerTuning) { + case llvm::DebuggerKind::GDB: + CmdArgs.push_back("-debugger-tuning=gdb"); + break; + case llvm::DebuggerKind::LLDB: + CmdArgs.push_back("-debugger-tuning=lldb"); + break; + case llvm::DebuggerKind::SCE: + CmdArgs.push_back("-debugger-tuning=sce"); + break; + default: + break; + } +} + +static const char *RelocationModelName(llvm::Reloc::Model Model) { + switch (Model) { + case llvm::Reloc::Static: + return "static"; + case llvm::Reloc::PIC_: + return "pic"; + case llvm::Reloc::DynamicNoPIC: + return "dynamic-no-pic"; + case llvm::Reloc::ROPI: + return "ropi"; + case llvm::Reloc::RWPI: + return "rwpi"; + case llvm::Reloc::ROPI_RWPI: + return "ropi-rwpi"; + } + llvm_unreachable("Unknown Reloc::Model kind"); +} + +void Clang::AddPreprocessingOptions(Compilation &C, const JobAction &JA, + const Driver &D, const ArgList &Args, + ArgStringList &CmdArgs, + const InputInfo &Output, + const InputInfoList &Inputs) const { + Arg *A; + const bool IsIAMCU = getToolChain().getTriple().isOSIAMCU(); + + CheckPreprocessingOptions(D, Args); + + Args.AddLastArg(CmdArgs, options::OPT_C); + Args.AddLastArg(CmdArgs, options::OPT_CC); + + // Handle dependency file generation. + if ((A = Args.getLastArg(options::OPT_M, options::OPT_MM)) || + (A = Args.getLastArg(options::OPT_MD)) || + (A = Args.getLastArg(options::OPT_MMD))) { + // Determine the output location. + const char *DepFile; + if (Arg *MF = Args.getLastArg(options::OPT_MF)) { + DepFile = MF->getValue(); + C.addFailureResultFile(DepFile, &JA); + } else if (Output.getType() == types::TY_Dependencies) { + DepFile = Output.getFilename(); + } else if (A->getOption().matches(options::OPT_M) || + A->getOption().matches(options::OPT_MM)) { + DepFile = "-"; + } else { + DepFile = getDependencyFileName(Args, Inputs); + C.addFailureResultFile(DepFile, &JA); + } + CmdArgs.push_back("-dependency-file"); + CmdArgs.push_back(DepFile); + + // Add a default target if one wasn't specified. + if (!Args.hasArg(options::OPT_MT) && !Args.hasArg(options::OPT_MQ)) { + const char *DepTarget; + + // If user provided -o, that is the dependency target, except + // when we are only generating a dependency file. + Arg *OutputOpt = Args.getLastArg(options::OPT_o); + if (OutputOpt && Output.getType() != types::TY_Dependencies) { + DepTarget = OutputOpt->getValue(); + } else { + // Otherwise derive from the base input. + // + // FIXME: This should use the computed output file location. + SmallString<128> P(Inputs[0].getBaseInput()); + llvm::sys::path::replace_extension(P, "o"); + DepTarget = Args.MakeArgString(llvm::sys::path::filename(P)); + } + + CmdArgs.push_back("-MT"); + SmallString<128> Quoted; + QuoteTarget(DepTarget, Quoted); + CmdArgs.push_back(Args.MakeArgString(Quoted)); + } + + if (A->getOption().matches(options::OPT_M) || + A->getOption().matches(options::OPT_MD)) + CmdArgs.push_back("-sys-header-deps"); + if ((isa<PrecompileJobAction>(JA) && + !Args.hasArg(options::OPT_fno_module_file_deps)) || + Args.hasArg(options::OPT_fmodule_file_deps)) + CmdArgs.push_back("-module-file-deps"); + } + + if (Args.hasArg(options::OPT_MG)) { + if (!A || A->getOption().matches(options::OPT_MD) || + A->getOption().matches(options::OPT_MMD)) + D.Diag(diag::err_drv_mg_requires_m_or_mm); + CmdArgs.push_back("-MG"); + } + + Args.AddLastArg(CmdArgs, options::OPT_MP); + Args.AddLastArg(CmdArgs, options::OPT_MV); + + // Convert all -MQ <target> args to -MT <quoted target> + for (const Arg *A : Args.filtered(options::OPT_MT, options::OPT_MQ)) { + A->claim(); + + if (A->getOption().matches(options::OPT_MQ)) { + CmdArgs.push_back("-MT"); + SmallString<128> Quoted; + QuoteTarget(A->getValue(), Quoted); + CmdArgs.push_back(Args.MakeArgString(Quoted)); + + // -MT flag - no change + } else { + A->render(Args, CmdArgs); + } + } + + // Add offload include arguments specific for CUDA. This must happen before + // we -I or -include anything else, because we must pick up the CUDA headers + // from the particular CUDA installation, rather than from e.g. + // /usr/local/include. + if (JA.isOffloading(Action::OFK_Cuda)) + getToolChain().AddCudaIncludeArgs(Args, CmdArgs); + + // Add -i* options, and automatically translate to + // -include-pch/-include-pth for transparent PCH support. It's + // wonky, but we include looking for .gch so we can support seamless + // replacement into a build system already set up to be generating + // .gch files. + int YcIndex = -1, YuIndex = -1; + { + int AI = -1; + const Arg *YcArg = Args.getLastArg(options::OPT__SLASH_Yc); + const Arg *YuArg = Args.getLastArg(options::OPT__SLASH_Yu); + for (const Arg *A : Args.filtered(options::OPT_clang_i_Group)) { + // Walk the whole i_Group and skip non "-include" flags so that the index + // here matches the index in the next loop below. + ++AI; + if (!A->getOption().matches(options::OPT_include)) + continue; + if (YcArg && strcmp(A->getValue(), YcArg->getValue()) == 0) + YcIndex = AI; + if (YuArg && strcmp(A->getValue(), YuArg->getValue()) == 0) + YuIndex = AI; + } + } + if (isa<PrecompileJobAction>(JA) && YcIndex != -1) { + Driver::InputList Inputs; + D.BuildInputs(getToolChain(), C.getArgs(), Inputs); + assert(Inputs.size() == 1 && "Need one input when building pch"); + CmdArgs.push_back(Args.MakeArgString(Twine("-find-pch-source=") + + Inputs[0].second->getValue())); + } + + bool RenderedImplicitInclude = false; + int AI = -1; + for (const Arg *A : Args.filtered(options::OPT_clang_i_Group)) { + ++AI; + + if (getToolChain().getDriver().IsCLMode() && + A->getOption().matches(options::OPT_include)) { + // In clang-cl mode, /Ycfoo.h means that all code up to a foo.h + // include is compiled into foo.h, and everything after goes into + // the .obj file. /Yufoo.h means that all includes prior to and including + // foo.h are completely skipped and replaced with a use of the pch file + // for foo.h. (Each flag can have at most one value, multiple /Yc flags + // just mean that the last one wins.) If /Yc and /Yu are both present + // and refer to the same file, /Yc wins. + // Note that OPT__SLASH_FI gets mapped to OPT_include. + // FIXME: The code here assumes that /Yc and /Yu refer to the same file. + // cl.exe seems to support both flags with different values, but that + // seems strange (which flag does /Fp now refer to?), so don't implement + // that until someone needs it. + int PchIndex = YcIndex != -1 ? YcIndex : YuIndex; + if (PchIndex != -1) { + if (isa<PrecompileJobAction>(JA)) { + // When building the pch, skip all includes after the pch. + assert(YcIndex != -1 && PchIndex == YcIndex); + if (AI >= YcIndex) + continue; + } else { + // When using the pch, skip all includes prior to the pch. + if (AI < PchIndex) { + A->claim(); + continue; + } + if (AI == PchIndex) { + A->claim(); + CmdArgs.push_back("-include-pch"); + CmdArgs.push_back( + Args.MakeArgString(D.GetClPchPath(C, A->getValue()))); + continue; + } + } + } + } else if (A->getOption().matches(options::OPT_include)) { + // Handling of gcc-style gch precompiled headers. + bool IsFirstImplicitInclude = !RenderedImplicitInclude; + RenderedImplicitInclude = true; + + // Use PCH if the user requested it. + bool UsePCH = D.CCCUsePCH; + + bool FoundPTH = false; + bool FoundPCH = false; + SmallString<128> P(A->getValue()); + // We want the files to have a name like foo.h.pch. Add a dummy extension + // so that replace_extension does the right thing. + P += ".dummy"; + if (UsePCH) { + llvm::sys::path::replace_extension(P, "pch"); + if (llvm::sys::fs::exists(P)) + FoundPCH = true; + } + + if (!FoundPCH) { + llvm::sys::path::replace_extension(P, "pth"); + if (llvm::sys::fs::exists(P)) + FoundPTH = true; + } + + if (!FoundPCH && !FoundPTH) { + llvm::sys::path::replace_extension(P, "gch"); + if (llvm::sys::fs::exists(P)) { + FoundPCH = UsePCH; + FoundPTH = !UsePCH; + } + } + + if (FoundPCH || FoundPTH) { + if (IsFirstImplicitInclude) { + A->claim(); + if (UsePCH) + CmdArgs.push_back("-include-pch"); + else + CmdArgs.push_back("-include-pth"); + CmdArgs.push_back(Args.MakeArgString(P)); + continue; + } else { + // Ignore the PCH if not first on command line and emit warning. + D.Diag(diag::warn_drv_pch_not_first_include) << P + << A->getAsString(Args); + } + } + } else if (A->getOption().matches(options::OPT_isystem_after)) { + // Handling of paths which must come late. These entries are handled by + // the toolchain itself after the resource dir is inserted in the right + // search order. + // Do not claim the argument so that the use of the argument does not + // silently go unnoticed on toolchains which do not honour the option. + continue; + } + + // Not translated, render as usual. + A->claim(); + A->render(Args, CmdArgs); + } + + Args.AddAllArgs(CmdArgs, + {options::OPT_D, options::OPT_U, options::OPT_I_Group, + options::OPT_F, options::OPT_index_header_map}); + + // Add -Wp, and -Xpreprocessor if using the preprocessor. + + // FIXME: There is a very unfortunate problem here, some troubled + // souls abuse -Wp, to pass preprocessor options in gcc syntax. To + // really support that we would have to parse and then translate + // those options. :( + Args.AddAllArgValues(CmdArgs, options::OPT_Wp_COMMA, + options::OPT_Xpreprocessor); + + // -I- is a deprecated GCC feature, reject it. + if (Arg *A = Args.getLastArg(options::OPT_I_)) + D.Diag(diag::err_drv_I_dash_not_supported) << A->getAsString(Args); + + // If we have a --sysroot, and don't have an explicit -isysroot flag, add an + // -isysroot to the CC1 invocation. + StringRef sysroot = C.getSysRoot(); + if (sysroot != "") { + if (!Args.hasArg(options::OPT_isysroot)) { + CmdArgs.push_back("-isysroot"); + CmdArgs.push_back(C.getArgs().MakeArgString(sysroot)); + } + } + + // Parse additional include paths from environment variables. + // FIXME: We should probably sink the logic for handling these from the + // frontend into the driver. It will allow deleting 4 otherwise unused flags. + // CPATH - included following the user specified includes (but prior to + // builtin and standard includes). + addDirectoryList(Args, CmdArgs, "-I", "CPATH"); + // C_INCLUDE_PATH - system includes enabled when compiling C. + addDirectoryList(Args, CmdArgs, "-c-isystem", "C_INCLUDE_PATH"); + // CPLUS_INCLUDE_PATH - system includes enabled when compiling C++. + addDirectoryList(Args, CmdArgs, "-cxx-isystem", "CPLUS_INCLUDE_PATH"); + // OBJC_INCLUDE_PATH - system includes enabled when compiling ObjC. + addDirectoryList(Args, CmdArgs, "-objc-isystem", "OBJC_INCLUDE_PATH"); + // OBJCPLUS_INCLUDE_PATH - system includes enabled when compiling ObjC++. + addDirectoryList(Args, CmdArgs, "-objcxx-isystem", "OBJCPLUS_INCLUDE_PATH"); + + // While adding the include arguments, we also attempt to retrieve the + // arguments of related offloading toolchains or arguments that are specific + // of an offloading programming model. + + // Add C++ include arguments, if needed. + if (types::isCXX(Inputs[0].getType())) + forAllAssociatedToolChains(C, JA, getToolChain(), + [&Args, &CmdArgs](const ToolChain &TC) { + TC.AddClangCXXStdlibIncludeArgs(Args, CmdArgs); + }); + + // Add system include arguments for all targets but IAMCU. + if (!IsIAMCU) + forAllAssociatedToolChains(C, JA, getToolChain(), + [&Args, &CmdArgs](const ToolChain &TC) { + TC.AddClangSystemIncludeArgs(Args, CmdArgs); + }); + else { + // For IAMCU add special include arguments. + getToolChain().AddIAMCUIncludeArgs(Args, CmdArgs); + } +} + +// FIXME: Move to target hook. +static bool isSignedCharDefault(const llvm::Triple &Triple) { + switch (Triple.getArch()) { + default: + return true; + + case llvm::Triple::aarch64: + case llvm::Triple::aarch64_be: + case llvm::Triple::arm: + case llvm::Triple::armeb: + case llvm::Triple::thumb: + case llvm::Triple::thumbeb: + if (Triple.isOSDarwin() || Triple.isOSWindows()) + return true; + return false; + + case llvm::Triple::ppc: + case llvm::Triple::ppc64: + if (Triple.isOSDarwin()) + return true; + return false; + + case llvm::Triple::hexagon: + case llvm::Triple::ppc64le: + case llvm::Triple::systemz: + case llvm::Triple::xcore: + return false; + } +} + +static bool isNoCommonDefault(const llvm::Triple &Triple) { + switch (Triple.getArch()) { + default: + return false; + + case llvm::Triple::xcore: + case llvm::Triple::wasm32: + case llvm::Triple::wasm64: + return true; + } +} + +void Clang::AddARMTargetArgs(const llvm::Triple &Triple, const ArgList &Args, + ArgStringList &CmdArgs, bool KernelOrKext) const { + // Select the ABI to use. + // FIXME: Support -meabi. + // FIXME: Parts of this are duplicated in the backend, unify this somehow. + const char *ABIName = nullptr; + if (Arg *A = Args.getLastArg(options::OPT_mabi_EQ)) { + ABIName = A->getValue(); + } else if (Triple.isOSBinFormatMachO()) { + if (arm::useAAPCSForMachO(Triple)) { + ABIName = "aapcs"; + } else if (Triple.isWatchABI()) { + ABIName = "aapcs16"; + } else { + ABIName = "apcs-gnu"; + } + } else if (Triple.isOSWindows()) { + // FIXME: this is invalid for WindowsCE + ABIName = "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: + ABIName = "aapcs-linux"; + break; + case llvm::Triple::EABIHF: + case llvm::Triple::EABI: + ABIName = "aapcs"; + break; + default: + if (Triple.getOS() == llvm::Triple::NetBSD) + ABIName = "apcs-gnu"; + else if (Triple.getOS() == llvm::Triple::OpenBSD) + ABIName = "aapcs-linux"; + else + ABIName = "aapcs"; + break; + } + } + CmdArgs.push_back("-target-abi"); + CmdArgs.push_back(ABIName); + + // Determine floating point ABI from the options & target defaults. + arm::FloatABI ABI = arm::getARMFloatABI(getToolChain(), Args); + if (ABI == arm::FloatABI::Soft) { + // Floating point operations and argument passing are soft. + // FIXME: This changes CPP defines, we need -target-soft-float. + CmdArgs.push_back("-msoft-float"); + CmdArgs.push_back("-mfloat-abi"); + CmdArgs.push_back("soft"); + } else if (ABI == arm::FloatABI::SoftFP) { + // Floating point operations are hard, but argument passing is soft. + CmdArgs.push_back("-mfloat-abi"); + CmdArgs.push_back("soft"); + } else { + // Floating point operations and argument passing are hard. + assert(ABI == arm::FloatABI::Hard && "Invalid float abi!"); + CmdArgs.push_back("-mfloat-abi"); + CmdArgs.push_back("hard"); + } + + // Forward the -mglobal-merge option for explicit control over the pass. + if (Arg *A = Args.getLastArg(options::OPT_mglobal_merge, + options::OPT_mno_global_merge)) { + CmdArgs.push_back("-backend-option"); + if (A->getOption().matches(options::OPT_mno_global_merge)) + CmdArgs.push_back("-arm-global-merge=false"); + else + CmdArgs.push_back("-arm-global-merge=true"); + } + + if (!Args.hasFlag(options::OPT_mimplicit_float, + options::OPT_mno_implicit_float, true)) + CmdArgs.push_back("-no-implicit-float"); +} + +void Clang::AddAArch64TargetArgs(const ArgList &Args, + ArgStringList &CmdArgs) const { + const llvm::Triple &Triple = getToolChain().getEffectiveTriple(); + + if (!Args.hasFlag(options::OPT_mred_zone, options::OPT_mno_red_zone, true) || + Args.hasArg(options::OPT_mkernel) || + Args.hasArg(options::OPT_fapple_kext)) + CmdArgs.push_back("-disable-red-zone"); + + if (!Args.hasFlag(options::OPT_mimplicit_float, + options::OPT_mno_implicit_float, true)) + CmdArgs.push_back("-no-implicit-float"); + + const char *ABIName = nullptr; + if (Arg *A = Args.getLastArg(options::OPT_mabi_EQ)) + ABIName = A->getValue(); + else if (Triple.isOSDarwin()) + ABIName = "darwinpcs"; + else + ABIName = "aapcs"; + + CmdArgs.push_back("-target-abi"); + CmdArgs.push_back(ABIName); + + if (Arg *A = Args.getLastArg(options::OPT_mfix_cortex_a53_835769, + options::OPT_mno_fix_cortex_a53_835769)) { + CmdArgs.push_back("-backend-option"); + if (A->getOption().matches(options::OPT_mfix_cortex_a53_835769)) + CmdArgs.push_back("-aarch64-fix-cortex-a53-835769=1"); + else + CmdArgs.push_back("-aarch64-fix-cortex-a53-835769=0"); + } else if (Triple.isAndroid()) { + // Enabled A53 errata (835769) workaround by default on android + CmdArgs.push_back("-backend-option"); + CmdArgs.push_back("-aarch64-fix-cortex-a53-835769=1"); + } + + // Forward the -mglobal-merge option for explicit control over the pass. + if (Arg *A = Args.getLastArg(options::OPT_mglobal_merge, + options::OPT_mno_global_merge)) { + CmdArgs.push_back("-backend-option"); + if (A->getOption().matches(options::OPT_mno_global_merge)) + CmdArgs.push_back("-aarch64-enable-global-merge=false"); + else + CmdArgs.push_back("-aarch64-enable-global-merge=true"); + } +} + +void Clang::AddMIPSTargetArgs(const ArgList &Args, + ArgStringList &CmdArgs) const { + const Driver &D = getToolChain().getDriver(); + StringRef CPUName; + StringRef ABIName; + const llvm::Triple &Triple = getToolChain().getTriple(); + mips::getMipsCPUAndABI(Args, Triple, CPUName, ABIName); + + CmdArgs.push_back("-target-abi"); + CmdArgs.push_back(ABIName.data()); + + mips::FloatABI ABI = mips::getMipsFloatABI(D, Args); + if (ABI == mips::FloatABI::Soft) { + // Floating point operations and argument passing are soft. + CmdArgs.push_back("-msoft-float"); + CmdArgs.push_back("-mfloat-abi"); + CmdArgs.push_back("soft"); + } else { + // Floating point operations and argument passing are hard. + assert(ABI == mips::FloatABI::Hard && "Invalid float abi!"); + CmdArgs.push_back("-mfloat-abi"); + CmdArgs.push_back("hard"); + } + + if (Arg *A = Args.getLastArg(options::OPT_mxgot, options::OPT_mno_xgot)) { + if (A->getOption().matches(options::OPT_mxgot)) { + CmdArgs.push_back("-mllvm"); + CmdArgs.push_back("-mxgot"); + } + } + + if (Arg *A = Args.getLastArg(options::OPT_mldc1_sdc1, + options::OPT_mno_ldc1_sdc1)) { + if (A->getOption().matches(options::OPT_mno_ldc1_sdc1)) { + CmdArgs.push_back("-mllvm"); + CmdArgs.push_back("-mno-ldc1-sdc1"); + } + } + + if (Arg *A = Args.getLastArg(options::OPT_mcheck_zero_division, + options::OPT_mno_check_zero_division)) { + if (A->getOption().matches(options::OPT_mno_check_zero_division)) { + CmdArgs.push_back("-mllvm"); + CmdArgs.push_back("-mno-check-zero-division"); + } + } + + if (Arg *A = Args.getLastArg(options::OPT_G)) { + StringRef v = A->getValue(); + CmdArgs.push_back("-mllvm"); + CmdArgs.push_back(Args.MakeArgString("-mips-ssection-threshold=" + v)); + A->claim(); + } + + if (Arg *A = Args.getLastArg(options::OPT_mcompact_branches_EQ)) { + StringRef Val = StringRef(A->getValue()); + if (mips::hasCompactBranches(CPUName)) { + if (Val == "never" || Val == "always" || Val == "optimal") { + CmdArgs.push_back("-mllvm"); + CmdArgs.push_back(Args.MakeArgString("-mips-compact-branches=" + Val)); + } else + D.Diag(diag::err_drv_unsupported_option_argument) + << A->getOption().getName() << Val; + } else + D.Diag(diag::warn_target_unsupported_compact_branches) << CPUName; + } +} + +void Clang::AddPPCTargetArgs(const ArgList &Args, + ArgStringList &CmdArgs) const { + // Select the ABI to use. + const char *ABIName = nullptr; + if (getToolChain().getTriple().isOSLinux()) + switch (getToolChain().getArch()) { + case llvm::Triple::ppc64: { + // When targeting a processor that supports QPX, or if QPX is + // specifically enabled, default to using the ABI that supports QPX (so + // long as it is not specifically disabled). + bool HasQPX = false; + if (Arg *A = Args.getLastArg(options::OPT_mcpu_EQ)) + HasQPX = A->getValue() == StringRef("a2q"); + HasQPX = Args.hasFlag(options::OPT_mqpx, options::OPT_mno_qpx, HasQPX); + if (HasQPX) { + ABIName = "elfv1-qpx"; + break; + } + + ABIName = "elfv1"; + break; + } + case llvm::Triple::ppc64le: + ABIName = "elfv2"; + break; + default: + break; + } + + if (Arg *A = Args.getLastArg(options::OPT_mabi_EQ)) + // The ppc64 linux abis are all "altivec" abis by default. Accept and ignore + // the option if given as we don't have backend support for any targets + // that don't use the altivec abi. + if (StringRef(A->getValue()) != "altivec") + ABIName = A->getValue(); + + ppc::FloatABI FloatABI = + ppc::getPPCFloatABI(getToolChain().getDriver(), Args); + + if (FloatABI == ppc::FloatABI::Soft) { + // Floating point operations and argument passing are soft. + CmdArgs.push_back("-msoft-float"); + CmdArgs.push_back("-mfloat-abi"); + CmdArgs.push_back("soft"); + } else { + // Floating point operations and argument passing are hard. + assert(FloatABI == ppc::FloatABI::Hard && "Invalid float abi!"); + CmdArgs.push_back("-mfloat-abi"); + CmdArgs.push_back("hard"); + } + + if (ABIName) { + CmdArgs.push_back("-target-abi"); + CmdArgs.push_back(ABIName); + } +} + +void Clang::AddSparcTargetArgs(const ArgList &Args, + ArgStringList &CmdArgs) const { + sparc::FloatABI FloatABI = + sparc::getSparcFloatABI(getToolChain().getDriver(), Args); + + if (FloatABI == sparc::FloatABI::Soft) { + // Floating point operations and argument passing are soft. + CmdArgs.push_back("-msoft-float"); + CmdArgs.push_back("-mfloat-abi"); + CmdArgs.push_back("soft"); + } else { + // Floating point operations and argument passing are hard. + assert(FloatABI == sparc::FloatABI::Hard && "Invalid float abi!"); + CmdArgs.push_back("-mfloat-abi"); + CmdArgs.push_back("hard"); + } +} + +void Clang::AddSystemZTargetArgs(const ArgList &Args, + ArgStringList &CmdArgs) const { + if (Args.hasFlag(options::OPT_mbackchain, options::OPT_mno_backchain, false)) + CmdArgs.push_back("-mbackchain"); +} + +void Clang::AddX86TargetArgs(const ArgList &Args, + ArgStringList &CmdArgs) const { + if (!Args.hasFlag(options::OPT_mred_zone, options::OPT_mno_red_zone, true) || + Args.hasArg(options::OPT_mkernel) || + Args.hasArg(options::OPT_fapple_kext)) + CmdArgs.push_back("-disable-red-zone"); + + // Default to avoid implicit floating-point for kernel/kext code, but allow + // that to be overridden with -mno-soft-float. + bool NoImplicitFloat = (Args.hasArg(options::OPT_mkernel) || + Args.hasArg(options::OPT_fapple_kext)); + if (Arg *A = Args.getLastArg( + options::OPT_msoft_float, options::OPT_mno_soft_float, + options::OPT_mimplicit_float, options::OPT_mno_implicit_float)) { + const Option &O = A->getOption(); + NoImplicitFloat = (O.matches(options::OPT_mno_implicit_float) || + O.matches(options::OPT_msoft_float)); + } + if (NoImplicitFloat) + CmdArgs.push_back("-no-implicit-float"); + + if (Arg *A = Args.getLastArg(options::OPT_masm_EQ)) { + StringRef Value = A->getValue(); + if (Value == "intel" || Value == "att") { + CmdArgs.push_back("-mllvm"); + CmdArgs.push_back(Args.MakeArgString("-x86-asm-syntax=" + Value)); + } else { + getToolChain().getDriver().Diag(diag::err_drv_unsupported_option_argument) + << A->getOption().getName() << Value; + } + } + + // Set flags to support MCU ABI. + if (Args.hasFlag(options::OPT_miamcu, options::OPT_mno_iamcu, false)) { + CmdArgs.push_back("-mfloat-abi"); + CmdArgs.push_back("soft"); + CmdArgs.push_back("-mstack-alignment=4"); + } +} + +void Clang::AddHexagonTargetArgs(const ArgList &Args, + ArgStringList &CmdArgs) const { + CmdArgs.push_back("-mqdsp6-compat"); + CmdArgs.push_back("-Wreturn-type"); + + if (auto G = toolchains::HexagonToolChain::getSmallDataThreshold(Args)) { + std::string N = llvm::utostr(G.getValue()); + std::string Opt = std::string("-hexagon-small-data-threshold=") + N; + CmdArgs.push_back("-mllvm"); + CmdArgs.push_back(Args.MakeArgString(Opt)); + } + + if (!Args.hasArg(options::OPT_fno_short_enums)) + CmdArgs.push_back("-fshort-enums"); + if (Args.getLastArg(options::OPT_mieee_rnd_near)) { + CmdArgs.push_back("-mllvm"); + CmdArgs.push_back("-enable-hexagon-ieee-rnd-near"); + } + CmdArgs.push_back("-mllvm"); + CmdArgs.push_back("-machine-sink-split=0"); +} + +void Clang::AddLanaiTargetArgs(const ArgList &Args, + ArgStringList &CmdArgs) const { + if (Arg *A = Args.getLastArg(options::OPT_mcpu_EQ)) { + StringRef CPUName = A->getValue(); + + CmdArgs.push_back("-target-cpu"); + CmdArgs.push_back(Args.MakeArgString(CPUName)); + } + if (Arg *A = Args.getLastArg(options::OPT_mregparm_EQ)) { + StringRef Value = A->getValue(); + // Only support mregparm=4 to support old usage. Report error for all other + // cases. + int Mregparm; + if (Value.getAsInteger(10, Mregparm)) { + if (Mregparm != 4) { + getToolChain().getDriver().Diag( + diag::err_drv_unsupported_option_argument) + << A->getOption().getName() << Value; + } + } + } +} + +void Clang::AddWebAssemblyTargetArgs(const ArgList &Args, + ArgStringList &CmdArgs) const { + // Default to "hidden" visibility. + if (!Args.hasArg(options::OPT_fvisibility_EQ, + options::OPT_fvisibility_ms_compat)) { + CmdArgs.push_back("-fvisibility"); + CmdArgs.push_back("hidden"); + } +} + +void Clang::DumpCompilationDatabase(Compilation &C, StringRef Filename, + StringRef Target, const InputInfo &Output, + const InputInfo &Input, const ArgList &Args) const { + // If this is a dry run, do not create the compilation database file. + if (C.getArgs().hasArg(options::OPT__HASH_HASH_HASH)) + return; + + using llvm::yaml::escape; + const Driver &D = getToolChain().getDriver(); + + if (!CompilationDatabase) { + std::error_code EC; + auto File = llvm::make_unique<llvm::raw_fd_ostream>(Filename, EC, llvm::sys::fs::F_Text); + if (EC) { + D.Diag(clang::diag::err_drv_compilationdatabase) << Filename + << EC.message(); + return; + } + CompilationDatabase = std::move(File); + } + auto &CDB = *CompilationDatabase; + SmallString<128> Buf; + if (llvm::sys::fs::current_path(Buf)) + Buf = "."; + CDB << "{ \"directory\": \"" << escape(Buf) << "\""; + CDB << ", \"file\": \"" << escape(Input.getFilename()) << "\""; + CDB << ", \"output\": \"" << escape(Output.getFilename()) << "\""; + CDB << ", \"arguments\": [\"" << escape(D.ClangExecutable) << "\""; + Buf = "-x"; + Buf += types::getTypeName(Input.getType()); + CDB << ", \"" << escape(Buf) << "\""; + if (!D.SysRoot.empty() && !Args.hasArg(options::OPT__sysroot_EQ)) { + Buf = "--sysroot="; + Buf += D.SysRoot; + CDB << ", \"" << escape(Buf) << "\""; + } + CDB << ", \"" << escape(Input.getFilename()) << "\""; + for (auto &A: Args) { + auto &O = A->getOption(); + // Skip language selection, which is positional. + if (O.getID() == options::OPT_x) + continue; + // Skip writing dependency output and the compilation database itself. + if (O.getGroup().isValid() && O.getGroup().getID() == options::OPT_M_Group) + continue; + // Skip inputs. + if (O.getKind() == Option::InputClass) + continue; + // All other arguments are quoted and appended. + ArgStringList ASL; + A->render(Args, ASL); + for (auto &it: ASL) + CDB << ", \"" << escape(it) << "\""; + } + Buf = "--target="; + Buf += Target; + CDB << ", \"" << escape(Buf) << "\"]},\n"; +} + +static void CollectArgsForIntegratedAssembler(Compilation &C, + const ArgList &Args, + ArgStringList &CmdArgs, + const Driver &D) { + if (UseRelaxAll(C, Args)) + CmdArgs.push_back("-mrelax-all"); + + // Only default to -mincremental-linker-compatible if we think we are + // targeting the MSVC linker. + bool DefaultIncrementalLinkerCompatible = + C.getDefaultToolChain().getTriple().isWindowsMSVCEnvironment(); + if (Args.hasFlag(options::OPT_mincremental_linker_compatible, + options::OPT_mno_incremental_linker_compatible, + DefaultIncrementalLinkerCompatible)) + CmdArgs.push_back("-mincremental-linker-compatible"); + + switch (C.getDefaultToolChain().getArch()) { + case llvm::Triple::arm: + case llvm::Triple::armeb: + case llvm::Triple::thumb: + case llvm::Triple::thumbeb: + if (Arg *A = Args.getLastArg(options::OPT_mimplicit_it_EQ)) { + StringRef Value = A->getValue(); + if (Value == "always" || Value == "never" || Value == "arm" || + Value == "thumb") { + CmdArgs.push_back("-mllvm"); + CmdArgs.push_back(Args.MakeArgString("-arm-implicit-it=" + Value)); + } else { + D.Diag(diag::err_drv_unsupported_option_argument) + << A->getOption().getName() << Value; + } + } + break; + default: + break; + } + + // When passing -I arguments to the assembler we sometimes need to + // unconditionally take the next argument. For example, when parsing + // '-Wa,-I -Wa,foo' we need to accept the -Wa,foo arg after seeing the + // -Wa,-I arg and when parsing '-Wa,-I,foo' we need to accept the 'foo' + // arg after parsing the '-I' arg. + bool TakeNextArg = false; + + // When using an integrated assembler, translate -Wa, and -Xassembler + // options. + bool CompressDebugSections = false; + + bool UseRelaxRelocations = ENABLE_X86_RELAX_RELOCATIONS; + const char *MipsTargetFeature = nullptr; + for (const Arg *A : + Args.filtered(options::OPT_Wa_COMMA, options::OPT_Xassembler)) { + A->claim(); + + for (StringRef Value : A->getValues()) { + if (TakeNextArg) { + CmdArgs.push_back(Value.data()); + TakeNextArg = false; + continue; + } + + if (C.getDefaultToolChain().getTriple().isOSBinFormatCOFF() && + Value == "-mbig-obj") + continue; // LLVM handles bigobj automatically + + switch (C.getDefaultToolChain().getArch()) { + default: + break; + case llvm::Triple::mips: + case llvm::Triple::mipsel: + case llvm::Triple::mips64: + case llvm::Triple::mips64el: + if (Value == "--trap") { + CmdArgs.push_back("-target-feature"); + CmdArgs.push_back("+use-tcc-in-div"); + continue; + } + if (Value == "--break") { + CmdArgs.push_back("-target-feature"); + CmdArgs.push_back("-use-tcc-in-div"); + continue; + } + if (Value.startswith("-msoft-float")) { + CmdArgs.push_back("-target-feature"); + CmdArgs.push_back("+soft-float"); + continue; + } + if (Value.startswith("-mhard-float")) { + CmdArgs.push_back("-target-feature"); + CmdArgs.push_back("-soft-float"); + continue; + } + + MipsTargetFeature = llvm::StringSwitch<const char *>(Value) + .Case("-mips1", "+mips1") + .Case("-mips2", "+mips2") + .Case("-mips3", "+mips3") + .Case("-mips4", "+mips4") + .Case("-mips5", "+mips5") + .Case("-mips32", "+mips32") + .Case("-mips32r2", "+mips32r2") + .Case("-mips32r3", "+mips32r3") + .Case("-mips32r5", "+mips32r5") + .Case("-mips32r6", "+mips32r6") + .Case("-mips64", "+mips64") + .Case("-mips64r2", "+mips64r2") + .Case("-mips64r3", "+mips64r3") + .Case("-mips64r5", "+mips64r5") + .Case("-mips64r6", "+mips64r6") + .Default(nullptr); + if (MipsTargetFeature) + continue; + } + + if (Value == "-force_cpusubtype_ALL") { + // Do nothing, this is the default and we don't support anything else. + } else if (Value == "-L") { + CmdArgs.push_back("-msave-temp-labels"); + } else if (Value == "--fatal-warnings") { + CmdArgs.push_back("-massembler-fatal-warnings"); + } else if (Value == "--noexecstack") { + CmdArgs.push_back("-mnoexecstack"); + } else if (Value == "-compress-debug-sections" || + Value == "--compress-debug-sections") { + CompressDebugSections = true; + } else if (Value == "-nocompress-debug-sections" || + Value == "--nocompress-debug-sections") { + CompressDebugSections = false; + } else if (Value == "-mrelax-relocations=yes" || + Value == "--mrelax-relocations=yes") { + UseRelaxRelocations = true; + } else if (Value == "-mrelax-relocations=no" || + Value == "--mrelax-relocations=no") { + UseRelaxRelocations = false; + } else if (Value.startswith("-I")) { + CmdArgs.push_back(Value.data()); + // We need to consume the next argument if the current arg is a plain + // -I. The next arg will be the include directory. + if (Value == "-I") + TakeNextArg = true; + } else if (Value.startswith("-gdwarf-")) { + // "-gdwarf-N" options are not cc1as options. + unsigned DwarfVersion = DwarfVersionNum(Value); + if (DwarfVersion == 0) { // Send it onward, and let cc1as complain. + CmdArgs.push_back(Value.data()); + } else { + RenderDebugEnablingArgs(Args, CmdArgs, + codegenoptions::LimitedDebugInfo, + DwarfVersion, llvm::DebuggerKind::Default); + } + } else if (Value.startswith("-mcpu") || Value.startswith("-mfpu") || + Value.startswith("-mhwdiv") || Value.startswith("-march")) { + // Do nothing, we'll validate it later. + } else if (Value == "-defsym") { + if (A->getNumValues() != 2) { + D.Diag(diag::err_drv_defsym_invalid_format) << Value; + break; + } + const char *S = A->getValue(1); + auto Pair = StringRef(S).split('='); + auto Sym = Pair.first; + auto SVal = Pair.second; + + if (Sym.empty() || SVal.empty()) { + D.Diag(diag::err_drv_defsym_invalid_format) << S; + break; + } + int64_t IVal; + if (SVal.getAsInteger(0, IVal)) { + D.Diag(diag::err_drv_defsym_invalid_symval) << SVal; + break; + } + CmdArgs.push_back(Value.data()); + TakeNextArg = true; + } else { + D.Diag(diag::err_drv_unsupported_option_argument) + << A->getOption().getName() << Value; + } + } + } + if (CompressDebugSections) { + if (llvm::zlib::isAvailable()) + CmdArgs.push_back("-compress-debug-sections"); + else + D.Diag(diag::warn_debug_compression_unavailable); + } + if (UseRelaxRelocations) + CmdArgs.push_back("--mrelax-relocations"); + if (MipsTargetFeature != nullptr) { + CmdArgs.push_back("-target-feature"); + CmdArgs.push_back(MipsTargetFeature); + } +} + +void Clang::ConstructJob(Compilation &C, const JobAction &JA, + const InputInfo &Output, const InputInfoList &Inputs, + const ArgList &Args, const char *LinkingOutput) const { + const llvm::Triple &Triple = getToolChain().getEffectiveTriple(); + const std::string &TripleStr = Triple.getTriple(); + + bool KernelOrKext = + Args.hasArg(options::OPT_mkernel, options::OPT_fapple_kext); + const Driver &D = getToolChain().getDriver(); + ArgStringList CmdArgs; + + // Check number of inputs for sanity. We need at least one input. + assert(Inputs.size() >= 1 && "Must have at least one input."); + const InputInfo &Input = Inputs[0]; + // CUDA compilation may have multiple inputs (source file + results of + // device-side compilations). OpenMP device jobs also take the host IR as a + // second input. All other jobs are expected to have exactly one + // input. + bool IsCuda = JA.isOffloading(Action::OFK_Cuda); + bool IsOpenMPDevice = JA.isDeviceOffloading(Action::OFK_OpenMP); + assert((IsCuda || (IsOpenMPDevice && Inputs.size() == 2) || + Inputs.size() == 1) && + "Unable to handle multiple inputs."); + + bool IsWindowsGNU = getToolChain().getTriple().isWindowsGNUEnvironment(); + bool IsWindowsCygnus = + getToolChain().getTriple().isWindowsCygwinEnvironment(); + bool IsWindowsMSVC = getToolChain().getTriple().isWindowsMSVCEnvironment(); + bool IsPS4CPU = getToolChain().getTriple().isPS4CPU(); + bool IsIAMCU = getToolChain().getTriple().isOSIAMCU(); + + // Adjust IsWindowsXYZ for CUDA compilations. Even when compiling in device + // mode (i.e., getToolchain().getTriple() is NVPTX, not Windows), we need to + // pass Windows-specific flags to cc1. + if (IsCuda) { + const llvm::Triple *AuxTriple = getToolChain().getAuxTriple(); + IsWindowsMSVC |= AuxTriple && AuxTriple->isWindowsMSVCEnvironment(); + IsWindowsGNU |= AuxTriple && AuxTriple->isWindowsGNUEnvironment(); + IsWindowsCygnus |= AuxTriple && AuxTriple->isWindowsCygwinEnvironment(); + } + + // C++ is not supported for IAMCU. + if (IsIAMCU && types::isCXX(Input.getType())) + D.Diag(diag::err_drv_clang_unsupported) << "C++ for IAMCU"; + + // Invoke ourselves in -cc1 mode. + // + // FIXME: Implement custom jobs for internal actions. + CmdArgs.push_back("-cc1"); + + // Add the "effective" target triple. + CmdArgs.push_back("-triple"); + CmdArgs.push_back(Args.MakeArgString(TripleStr)); + + if (const Arg *MJ = Args.getLastArg(options::OPT_MJ)) { + DumpCompilationDatabase(C, MJ->getValue(), TripleStr, Output, Input, Args); + Args.ClaimAllArgs(options::OPT_MJ); + } + + if (IsCuda) { + // We have to pass the triple of the host if compiling for a CUDA device and + // vice-versa. + std::string NormalizedTriple; + if (JA.isDeviceOffloading(Action::OFK_Cuda)) + NormalizedTriple = C.getSingleOffloadToolChain<Action::OFK_Host>() + ->getTriple() + .normalize(); + else + NormalizedTriple = C.getSingleOffloadToolChain<Action::OFK_Cuda>() + ->getTriple() + .normalize(); + + CmdArgs.push_back("-aux-triple"); + CmdArgs.push_back(Args.MakeArgString(NormalizedTriple)); + } + + if (Triple.isOSWindows() && (Triple.getArch() == llvm::Triple::arm || + Triple.getArch() == llvm::Triple::thumb)) { + unsigned Offset = Triple.getArch() == llvm::Triple::arm ? 4 : 6; + unsigned Version; + Triple.getArchName().substr(Offset).getAsInteger(10, Version); + if (Version < 7) + D.Diag(diag::err_target_unsupported_arch) << Triple.getArchName() + << TripleStr; + } + + // Push all default warning arguments that are specific to + // the given target. These come before user provided warning options + // are provided. + getToolChain().addClangWarningOptions(CmdArgs); + + // Select the appropriate action. + RewriteKind rewriteKind = RK_None; + + if (isa<AnalyzeJobAction>(JA)) { + assert(JA.getType() == types::TY_Plist && "Invalid output type."); + CmdArgs.push_back("-analyze"); + } else if (isa<MigrateJobAction>(JA)) { + CmdArgs.push_back("-migrate"); + } else if (isa<PreprocessJobAction>(JA)) { + if (Output.getType() == types::TY_Dependencies) + CmdArgs.push_back("-Eonly"); + else { + CmdArgs.push_back("-E"); + if (Args.hasArg(options::OPT_rewrite_objc) && + !Args.hasArg(options::OPT_g_Group)) + CmdArgs.push_back("-P"); + } + } else if (isa<AssembleJobAction>(JA)) { + CmdArgs.push_back("-emit-obj"); + + CollectArgsForIntegratedAssembler(C, Args, CmdArgs, D); + + // Also ignore explicit -force_cpusubtype_ALL option. + (void)Args.hasArg(options::OPT_force__cpusubtype__ALL); + } else if (isa<PrecompileJobAction>(JA)) { + // Use PCH if the user requested it. + bool UsePCH = D.CCCUsePCH; + + if (JA.getType() == types::TY_Nothing) + CmdArgs.push_back("-fsyntax-only"); + else if (JA.getType() == types::TY_ModuleFile) + CmdArgs.push_back("-emit-module-interface"); + else if (UsePCH) + CmdArgs.push_back("-emit-pch"); + else + CmdArgs.push_back("-emit-pth"); + } else if (isa<VerifyPCHJobAction>(JA)) { + CmdArgs.push_back("-verify-pch"); + } else { + assert((isa<CompileJobAction>(JA) || isa<BackendJobAction>(JA)) && + "Invalid action for clang tool."); + if (JA.getType() == types::TY_Nothing) { + CmdArgs.push_back("-fsyntax-only"); + } else if (JA.getType() == types::TY_LLVM_IR || + JA.getType() == types::TY_LTO_IR) { + CmdArgs.push_back("-emit-llvm"); + } else if (JA.getType() == types::TY_LLVM_BC || + JA.getType() == types::TY_LTO_BC) { + CmdArgs.push_back("-emit-llvm-bc"); + } else if (JA.getType() == types::TY_PP_Asm) { + CmdArgs.push_back("-S"); + } else if (JA.getType() == types::TY_AST) { + CmdArgs.push_back("-emit-pch"); + } else if (JA.getType() == types::TY_ModuleFile) { + CmdArgs.push_back("-module-file-info"); + } else if (JA.getType() == types::TY_RewrittenObjC) { + CmdArgs.push_back("-rewrite-objc"); + rewriteKind = RK_NonFragile; + } else if (JA.getType() == types::TY_RewrittenLegacyObjC) { + CmdArgs.push_back("-rewrite-objc"); + rewriteKind = RK_Fragile; + } else { + assert(JA.getType() == types::TY_PP_Asm && "Unexpected output type!"); + } + + // Preserve use-list order by default when emitting bitcode, so that + // loading the bitcode up in 'opt' or 'llc' and running passes gives the + // same result as running passes here. For LTO, we don't need to preserve + // the use-list order, since serialization to bitcode is part of the flow. + if (JA.getType() == types::TY_LLVM_BC) + CmdArgs.push_back("-emit-llvm-uselists"); + + if (D.isUsingLTO()) { + Args.AddLastArg(CmdArgs, options::OPT_flto, options::OPT_flto_EQ); + + // The Darwin linker currently uses the legacy LTO API, which does not + // support LTO unit features (CFI, whole program vtable opt) under + // ThinLTO. + if (!getToolChain().getTriple().isOSDarwin() || + D.getLTOMode() == LTOK_Full) + CmdArgs.push_back("-flto-unit"); + } + } + + if (const Arg *A = Args.getLastArg(options::OPT_fthinlto_index_EQ)) { + if (!types::isLLVMIR(Input.getType())) + D.Diag(diag::err_drv_argument_only_allowed_with) << A->getAsString(Args) + << "-x ir"; + Args.AddLastArg(CmdArgs, options::OPT_fthinlto_index_EQ); + } + + // Embed-bitcode option. + if (C.getDriver().embedBitcodeInObject() && !C.getDriver().isUsingLTO() && + (isa<BackendJobAction>(JA) || isa<AssembleJobAction>(JA))) { + // Add flags implied by -fembed-bitcode. + Args.AddLastArg(CmdArgs, options::OPT_fembed_bitcode_EQ); + // Disable all llvm IR level optimizations. + CmdArgs.push_back("-disable-llvm-passes"); + } + if (C.getDriver().embedBitcodeMarkerOnly() && !C.getDriver().isUsingLTO()) + CmdArgs.push_back("-fembed-bitcode=marker"); + + // We normally speed up the clang process a bit by skipping destructors at + // exit, but when we're generating diagnostics we can rely on some of the + // cleanup. + if (!C.isForDiagnostics()) + CmdArgs.push_back("-disable-free"); + +// Disable the verification pass in -asserts builds. +#ifdef NDEBUG + CmdArgs.push_back("-disable-llvm-verifier"); + // Discard LLVM value names in -asserts builds. + CmdArgs.push_back("-discard-value-names"); +#endif + + // Set the main file name, so that debug info works even with + // -save-temps. + CmdArgs.push_back("-main-file-name"); + CmdArgs.push_back(getBaseInputName(Args, Input)); + + // Some flags which affect the language (via preprocessor + // defines). + if (Args.hasArg(options::OPT_static)) + CmdArgs.push_back("-static-define"); + + if (isa<AnalyzeJobAction>(JA)) { + // Enable region store model by default. + CmdArgs.push_back("-analyzer-store=region"); + + // Treat blocks as analysis entry points. + CmdArgs.push_back("-analyzer-opt-analyze-nested-blocks"); + + CmdArgs.push_back("-analyzer-eagerly-assume"); + + // Add default argument set. + if (!Args.hasArg(options::OPT__analyzer_no_default_checks)) { + CmdArgs.push_back("-analyzer-checker=core"); + CmdArgs.push_back("-analyzer-checker=apiModeling"); + + if (!IsWindowsMSVC) { + CmdArgs.push_back("-analyzer-checker=unix"); + } else { + // Enable "unix" checkers that also work on Windows. + CmdArgs.push_back("-analyzer-checker=unix.API"); + CmdArgs.push_back("-analyzer-checker=unix.Malloc"); + CmdArgs.push_back("-analyzer-checker=unix.MallocSizeof"); + CmdArgs.push_back("-analyzer-checker=unix.MismatchedDeallocator"); + CmdArgs.push_back("-analyzer-checker=unix.cstring.BadSizeArg"); + CmdArgs.push_back("-analyzer-checker=unix.cstring.NullArg"); + } + + // Disable some unix checkers for PS4. + if (IsPS4CPU) { + CmdArgs.push_back("-analyzer-disable-checker=unix.API"); + CmdArgs.push_back("-analyzer-disable-checker=unix.Vfork"); + } + + if (getToolChain().getTriple().getVendor() == llvm::Triple::Apple) + CmdArgs.push_back("-analyzer-checker=osx"); + + CmdArgs.push_back("-analyzer-checker=deadcode"); + + if (types::isCXX(Input.getType())) + CmdArgs.push_back("-analyzer-checker=cplusplus"); + + if (!IsPS4CPU) { + CmdArgs.push_back( + "-analyzer-checker=security.insecureAPI.UncheckedReturn"); + CmdArgs.push_back("-analyzer-checker=security.insecureAPI.getpw"); + CmdArgs.push_back("-analyzer-checker=security.insecureAPI.gets"); + CmdArgs.push_back("-analyzer-checker=security.insecureAPI.mktemp"); + CmdArgs.push_back("-analyzer-checker=security.insecureAPI.mkstemp"); + CmdArgs.push_back("-analyzer-checker=security.insecureAPI.vfork"); + } + + // Default nullability checks. + CmdArgs.push_back("-analyzer-checker=nullability.NullPassedToNonnull"); + CmdArgs.push_back( + "-analyzer-checker=nullability.NullReturnedFromNonnull"); + } + + // Set the output format. The default is plist, for (lame) historical + // reasons. + CmdArgs.push_back("-analyzer-output"); + if (Arg *A = Args.getLastArg(options::OPT__analyzer_output)) + CmdArgs.push_back(A->getValue()); + else + CmdArgs.push_back("plist"); + + // Disable the presentation of standard compiler warnings when + // using --analyze. We only want to show static analyzer diagnostics + // or frontend errors. + CmdArgs.push_back("-w"); + + // Add -Xanalyzer arguments when running as analyzer. + Args.AddAllArgValues(CmdArgs, options::OPT_Xanalyzer); + } + + CheckCodeGenerationOptions(D, Args); + + llvm::Reloc::Model RelocationModel; + unsigned PICLevel; + bool IsPIE; + std::tie(RelocationModel, PICLevel, IsPIE) = + ParsePICArgs(getToolChain(), Args); + + const char *RMName = RelocationModelName(RelocationModel); + + if ((RelocationModel == llvm::Reloc::ROPI || + RelocationModel == llvm::Reloc::ROPI_RWPI) && + types::isCXX(Input.getType()) && + !Args.hasArg(options::OPT_fallow_unsupported)) + D.Diag(diag::err_drv_ropi_incompatible_with_cxx); + + if (RMName) { + CmdArgs.push_back("-mrelocation-model"); + CmdArgs.push_back(RMName); + } + if (PICLevel > 0) { + CmdArgs.push_back("-pic-level"); + CmdArgs.push_back(PICLevel == 1 ? "1" : "2"); + if (IsPIE) + CmdArgs.push_back("-pic-is-pie"); + } + + if (Arg *A = Args.getLastArg(options::OPT_meabi)) { + CmdArgs.push_back("-meabi"); + CmdArgs.push_back(A->getValue()); + } + + CmdArgs.push_back("-mthread-model"); + if (Arg *A = Args.getLastArg(options::OPT_mthread_model)) + CmdArgs.push_back(A->getValue()); + else + CmdArgs.push_back(Args.MakeArgString(getToolChain().getThreadModel())); + + Args.AddLastArg(CmdArgs, options::OPT_fveclib); + + if (!Args.hasFlag(options::OPT_fmerge_all_constants, + options::OPT_fno_merge_all_constants)) + CmdArgs.push_back("-fno-merge-all-constants"); + + // LLVM Code Generator Options. + + if (Args.hasArg(options::OPT_frewrite_map_file) || + Args.hasArg(options::OPT_frewrite_map_file_EQ)) { + for (const Arg *A : Args.filtered(options::OPT_frewrite_map_file, + options::OPT_frewrite_map_file_EQ)) { + StringRef Map = A->getValue(); + if (!llvm::sys::fs::exists(Map)) { + D.Diag(diag::err_drv_no_such_file) << Map; + } else { + CmdArgs.push_back("-frewrite-map-file"); + CmdArgs.push_back(A->getValue()); + A->claim(); + } + } + } + + if (Arg *A = Args.getLastArg(options::OPT_Wframe_larger_than_EQ)) { + StringRef v = A->getValue(); + CmdArgs.push_back("-mllvm"); + CmdArgs.push_back(Args.MakeArgString("-warn-stack-size=" + v)); + A->claim(); + } + + if (!Args.hasFlag(options::OPT_fjump_tables, options::OPT_fno_jump_tables, + true)) + CmdArgs.push_back("-fno-jump-tables"); + + if (!Args.hasFlag(options::OPT_fpreserve_as_comments, + options::OPT_fno_preserve_as_comments, true)) + CmdArgs.push_back("-fno-preserve-as-comments"); + + if (Arg *A = Args.getLastArg(options::OPT_mregparm_EQ)) { + CmdArgs.push_back("-mregparm"); + CmdArgs.push_back(A->getValue()); + } + + if (Arg *A = Args.getLastArg(options::OPT_fpcc_struct_return, + options::OPT_freg_struct_return)) { + if (getToolChain().getArch() != llvm::Triple::x86) { + D.Diag(diag::err_drv_unsupported_opt_for_target) + << A->getSpelling() << getToolChain().getTriple().str(); + } else if (A->getOption().matches(options::OPT_fpcc_struct_return)) { + CmdArgs.push_back("-fpcc-struct-return"); + } else { + assert(A->getOption().matches(options::OPT_freg_struct_return)); + CmdArgs.push_back("-freg-struct-return"); + } + } + + if (Args.hasFlag(options::OPT_mrtd, options::OPT_mno_rtd, false)) + CmdArgs.push_back("-fdefault-calling-conv=stdcall"); + + if (shouldUseFramePointer(Args, getToolChain().getTriple())) + CmdArgs.push_back("-mdisable-fp-elim"); + if (!Args.hasFlag(options::OPT_fzero_initialized_in_bss, + options::OPT_fno_zero_initialized_in_bss)) + CmdArgs.push_back("-mno-zero-initialized-in-bss"); + + bool OFastEnabled = isOptimizationLevelFast(Args); + // If -Ofast is the optimization level, then -fstrict-aliasing should be + // enabled. This alias option is being used to simplify the hasFlag logic. + OptSpecifier StrictAliasingAliasOption = + OFastEnabled ? options::OPT_Ofast : options::OPT_fstrict_aliasing; + // We turn strict aliasing off by default if we're in CL mode, since MSVC + // doesn't do any TBAA. + bool TBAAOnByDefault = !getToolChain().getDriver().IsCLMode(); + if (!Args.hasFlag(options::OPT_fstrict_aliasing, StrictAliasingAliasOption, + options::OPT_fno_strict_aliasing, TBAAOnByDefault)) + CmdArgs.push_back("-relaxed-aliasing"); + if (!Args.hasFlag(options::OPT_fstruct_path_tbaa, + options::OPT_fno_struct_path_tbaa)) + CmdArgs.push_back("-no-struct-path-tbaa"); + if (Args.hasFlag(options::OPT_fstrict_enums, options::OPT_fno_strict_enums, + false)) + CmdArgs.push_back("-fstrict-enums"); + if (!Args.hasFlag(options::OPT_fstrict_return, options::OPT_fno_strict_return, + true)) + CmdArgs.push_back("-fno-strict-return"); + if (Args.hasFlag(options::OPT_fstrict_vtable_pointers, + options::OPT_fno_strict_vtable_pointers, + false)) + CmdArgs.push_back("-fstrict-vtable-pointers"); + if (!Args.hasFlag(options::OPT_foptimize_sibling_calls, + options::OPT_fno_optimize_sibling_calls)) + CmdArgs.push_back("-mdisable-tail-calls"); + + // Handle segmented stacks. + if (Args.hasArg(options::OPT_fsplit_stack)) + CmdArgs.push_back("-split-stacks"); + + // If -Ofast is the optimization level, then -ffast-math should be enabled. + // This alias option is being used to simplify the getLastArg logic. + OptSpecifier FastMathAliasOption = + OFastEnabled ? options::OPT_Ofast : options::OPT_ffast_math; + + // Handle various floating point optimization flags, mapping them to the + // appropriate LLVM code generation flags. The pattern for all of these is to + // default off the codegen optimizations, and if any flag enables them and no + // flag disables them after the flag enabling them, enable the codegen + // optimization. This is complicated by several "umbrella" flags. + if (Arg *A = Args.getLastArg( + options::OPT_ffast_math, FastMathAliasOption, + options::OPT_fno_fast_math, options::OPT_ffinite_math_only, + options::OPT_fno_finite_math_only, options::OPT_fhonor_infinities, + options::OPT_fno_honor_infinities)) + if (A->getOption().getID() != options::OPT_fno_fast_math && + A->getOption().getID() != options::OPT_fno_finite_math_only && + A->getOption().getID() != options::OPT_fhonor_infinities) + CmdArgs.push_back("-menable-no-infs"); + if (Arg *A = Args.getLastArg( + options::OPT_ffast_math, FastMathAliasOption, + options::OPT_fno_fast_math, options::OPT_ffinite_math_only, + options::OPT_fno_finite_math_only, options::OPT_fhonor_nans, + options::OPT_fno_honor_nans)) + if (A->getOption().getID() != options::OPT_fno_fast_math && + A->getOption().getID() != options::OPT_fno_finite_math_only && + A->getOption().getID() != options::OPT_fhonor_nans) + CmdArgs.push_back("-menable-no-nans"); + + // -fmath-errno is the default on some platforms, e.g. BSD-derived OSes. + bool MathErrno = getToolChain().IsMathErrnoDefault(); + if (Arg *A = + Args.getLastArg(options::OPT_ffast_math, FastMathAliasOption, + options::OPT_fno_fast_math, options::OPT_fmath_errno, + options::OPT_fno_math_errno)) { + // Turning on -ffast_math (with either flag) removes the need for MathErrno. + // However, turning *off* -ffast_math merely restores the toolchain default + // (which may be false). + if (A->getOption().getID() == options::OPT_fno_math_errno || + A->getOption().getID() == options::OPT_ffast_math || + A->getOption().getID() == options::OPT_Ofast) + MathErrno = false; + else if (A->getOption().getID() == options::OPT_fmath_errno) + MathErrno = true; + } + if (MathErrno) + CmdArgs.push_back("-fmath-errno"); + + // There are several flags which require disabling very specific + // optimizations. Any of these being disabled forces us to turn off the + // entire set of LLVM optimizations, so collect them through all the flag + // madness. + bool AssociativeMath = false; + if (Arg *A = Args.getLastArg( + options::OPT_ffast_math, FastMathAliasOption, + options::OPT_fno_fast_math, options::OPT_funsafe_math_optimizations, + options::OPT_fno_unsafe_math_optimizations, + options::OPT_fassociative_math, options::OPT_fno_associative_math)) + if (A->getOption().getID() != options::OPT_fno_fast_math && + A->getOption().getID() != options::OPT_fno_unsafe_math_optimizations && + A->getOption().getID() != options::OPT_fno_associative_math) + AssociativeMath = true; + bool ReciprocalMath = false; + if (Arg *A = Args.getLastArg( + options::OPT_ffast_math, FastMathAliasOption, + options::OPT_fno_fast_math, options::OPT_funsafe_math_optimizations, + options::OPT_fno_unsafe_math_optimizations, + options::OPT_freciprocal_math, options::OPT_fno_reciprocal_math)) + if (A->getOption().getID() != options::OPT_fno_fast_math && + A->getOption().getID() != options::OPT_fno_unsafe_math_optimizations && + A->getOption().getID() != options::OPT_fno_reciprocal_math) + ReciprocalMath = true; + bool SignedZeros = true; + if (Arg *A = Args.getLastArg( + options::OPT_ffast_math, FastMathAliasOption, + options::OPT_fno_fast_math, options::OPT_funsafe_math_optimizations, + options::OPT_fno_unsafe_math_optimizations, + options::OPT_fsigned_zeros, options::OPT_fno_signed_zeros)) + if (A->getOption().getID() != options::OPT_fno_fast_math && + A->getOption().getID() != options::OPT_fno_unsafe_math_optimizations && + A->getOption().getID() != options::OPT_fsigned_zeros) + SignedZeros = false; + bool TrappingMath = true; + if (Arg *A = Args.getLastArg( + options::OPT_ffast_math, FastMathAliasOption, + options::OPT_fno_fast_math, options::OPT_funsafe_math_optimizations, + options::OPT_fno_unsafe_math_optimizations, + options::OPT_ftrapping_math, options::OPT_fno_trapping_math)) + if (A->getOption().getID() != options::OPT_fno_fast_math && + A->getOption().getID() != options::OPT_fno_unsafe_math_optimizations && + A->getOption().getID() != options::OPT_ftrapping_math) + TrappingMath = false; + if (!MathErrno && AssociativeMath && ReciprocalMath && !SignedZeros && + !TrappingMath) + CmdArgs.push_back("-menable-unsafe-fp-math"); + + if (!SignedZeros) + CmdArgs.push_back("-fno-signed-zeros"); + + if (ReciprocalMath) + CmdArgs.push_back("-freciprocal-math"); + + if (!TrappingMath) + CmdArgs.push_back("-fno-trapping-math"); + + + if (Arg *A = Args.getLastArg(options::OPT_ffast_math, FastMathAliasOption, + options::OPT_fno_fast_math, + options::OPT_funsafe_math_optimizations, + options::OPT_fno_unsafe_math_optimizations, + options::OPT_fdenormal_fp_math_EQ)) + if (A->getOption().getID() != options::OPT_fno_fast_math && + A->getOption().getID() != options::OPT_fno_unsafe_math_optimizations) + Args.AddLastArg(CmdArgs, options::OPT_fdenormal_fp_math_EQ); + + // Validate and pass through -fp-contract option. + if (Arg *A = Args.getLastArg(options::OPT_ffast_math, FastMathAliasOption, + options::OPT_fno_fast_math, + options::OPT_ffp_contract)) { + if (A->getOption().getID() == options::OPT_ffp_contract) { + StringRef Val = A->getValue(); + if (Val == "fast" || Val == "on" || Val == "off") { + CmdArgs.push_back(Args.MakeArgString("-ffp-contract=" + Val)); + } else { + D.Diag(diag::err_drv_unsupported_option_argument) + << A->getOption().getName() << Val; + } + } else if (A->getOption().matches(options::OPT_ffast_math) || + (OFastEnabled && A->getOption().matches(options::OPT_Ofast))) { + // If fast-math is set then set the fp-contract mode to fast. + CmdArgs.push_back(Args.MakeArgString("-ffp-contract=fast")); + } + } + + ParseMRecip(getToolChain().getDriver(), Args, CmdArgs); + + // We separately look for the '-ffast-math' and '-ffinite-math-only' flags, + // and if we find them, tell the frontend to provide the appropriate + // preprocessor macros. This is distinct from enabling any optimizations as + // these options induce language changes which must survive serialization + // and deserialization, etc. + if (Arg *A = Args.getLastArg(options::OPT_ffast_math, FastMathAliasOption, + options::OPT_fno_fast_math)) + if (!A->getOption().matches(options::OPT_fno_fast_math)) + CmdArgs.push_back("-ffast-math"); + if (Arg *A = Args.getLastArg(options::OPT_ffinite_math_only, + options::OPT_fno_fast_math)) + if (A->getOption().matches(options::OPT_ffinite_math_only)) + CmdArgs.push_back("-ffinite-math-only"); + + // Decide whether to use verbose asm. Verbose assembly is the default on + // toolchains which have the integrated assembler on by default. + bool IsIntegratedAssemblerDefault = + getToolChain().IsIntegratedAssemblerDefault(); + if (Args.hasFlag(options::OPT_fverbose_asm, options::OPT_fno_verbose_asm, + IsIntegratedAssemblerDefault) || + Args.hasArg(options::OPT_dA)) + CmdArgs.push_back("-masm-verbose"); + + if (!Args.hasFlag(options::OPT_fintegrated_as, options::OPT_fno_integrated_as, + IsIntegratedAssemblerDefault)) + CmdArgs.push_back("-no-integrated-as"); + + if (Args.hasArg(options::OPT_fdebug_pass_structure)) { + CmdArgs.push_back("-mdebug-pass"); + CmdArgs.push_back("Structure"); + } + if (Args.hasArg(options::OPT_fdebug_pass_arguments)) { + CmdArgs.push_back("-mdebug-pass"); + CmdArgs.push_back("Arguments"); + } + + // Enable -mconstructor-aliases except on darwin, where we have to work around + // a linker bug (see <rdar://problem/7651567>), and CUDA device code, where + // aliases aren't supported. + if (!getToolChain().getTriple().isOSDarwin() && + !getToolChain().getTriple().isNVPTX()) + CmdArgs.push_back("-mconstructor-aliases"); + + // Darwin's kernel doesn't support guard variables; just die if we + // try to use them. + if (KernelOrKext && getToolChain().getTriple().isOSDarwin()) + CmdArgs.push_back("-fforbid-guard-variables"); + + if (Args.hasFlag(options::OPT_mms_bitfields, options::OPT_mno_ms_bitfields, + false)) { + CmdArgs.push_back("-mms-bitfields"); + } + + if (Args.hasFlag(options::OPT_mpie_copy_relocations, + options::OPT_mno_pie_copy_relocations, + false)) { + CmdArgs.push_back("-mpie-copy-relocations"); + } + + // This is a coarse approximation of what llvm-gcc actually does, both + // -fasynchronous-unwind-tables and -fnon-call-exceptions interact in more + // complicated ways. + bool AsynchronousUnwindTables = + Args.hasFlag(options::OPT_fasynchronous_unwind_tables, + options::OPT_fno_asynchronous_unwind_tables, + (getToolChain().IsUnwindTablesDefault() || + getToolChain().getSanitizerArgs().needsUnwindTables()) && + !KernelOrKext); + if (Args.hasFlag(options::OPT_funwind_tables, options::OPT_fno_unwind_tables, + AsynchronousUnwindTables)) + CmdArgs.push_back("-munwind-tables"); + + getToolChain().addClangTargetOptions(Args, CmdArgs); + + if (Arg *A = Args.getLastArg(options::OPT_flimited_precision_EQ)) { + CmdArgs.push_back("-mlimit-float-precision"); + CmdArgs.push_back(A->getValue()); + } + + // FIXME: Handle -mtune=. + (void)Args.hasArg(options::OPT_mtune_EQ); + + if (Arg *A = Args.getLastArg(options::OPT_mcmodel_EQ)) { + CmdArgs.push_back("-mcode-model"); + CmdArgs.push_back(A->getValue()); + } + + // Add the target cpu + std::string CPU = getCPUName(Args, Triple, /*FromAs*/ false); + if (!CPU.empty()) { + CmdArgs.push_back("-target-cpu"); + CmdArgs.push_back(Args.MakeArgString(CPU)); + } + + if (const Arg *A = Args.getLastArg(options::OPT_mfpmath_EQ)) { + CmdArgs.push_back("-mfpmath"); + CmdArgs.push_back(A->getValue()); + } + + // Add the target features + getTargetFeatures(getToolChain(), Triple, Args, CmdArgs, false); + + // Add target specific flags. + switch (getToolChain().getArch()) { + default: + break; + + case llvm::Triple::arm: + case llvm::Triple::armeb: + case llvm::Triple::thumb: + case llvm::Triple::thumbeb: + // Use the effective triple, which takes into account the deployment target. + AddARMTargetArgs(Triple, Args, CmdArgs, KernelOrKext); + break; + + case llvm::Triple::aarch64: + case llvm::Triple::aarch64_be: + AddAArch64TargetArgs(Args, CmdArgs); + break; + + case llvm::Triple::mips: + case llvm::Triple::mipsel: + case llvm::Triple::mips64: + case llvm::Triple::mips64el: + AddMIPSTargetArgs(Args, CmdArgs); + break; + + case llvm::Triple::ppc: + case llvm::Triple::ppc64: + case llvm::Triple::ppc64le: + AddPPCTargetArgs(Args, CmdArgs); + break; + + case llvm::Triple::sparc: + case llvm::Triple::sparcel: + case llvm::Triple::sparcv9: + AddSparcTargetArgs(Args, CmdArgs); + break; + + case llvm::Triple::systemz: + AddSystemZTargetArgs(Args, CmdArgs); + break; + + case llvm::Triple::x86: + case llvm::Triple::x86_64: + AddX86TargetArgs(Args, CmdArgs); + break; + + case llvm::Triple::lanai: + AddLanaiTargetArgs(Args, CmdArgs); + break; + + case llvm::Triple::hexagon: + AddHexagonTargetArgs(Args, CmdArgs); + break; + + case llvm::Triple::wasm32: + case llvm::Triple::wasm64: + AddWebAssemblyTargetArgs(Args, CmdArgs); + break; + } + + // The 'g' groups options involve a somewhat intricate sequence of decisions + // about what to pass from the driver to the frontend, but by the time they + // reach cc1 they've been factored into three well-defined orthogonal choices: + // * what level of debug info to generate + // * what dwarf version to write + // * what debugger tuning to use + // This avoids having to monkey around further in cc1 other than to disable + // codeview if not running in a Windows environment. Perhaps even that + // decision should be made in the driver as well though. + unsigned DwarfVersion = 0; + llvm::DebuggerKind DebuggerTuning = getToolChain().getDefaultDebuggerTuning(); + // These two are potentially updated by AddClangCLArgs. + codegenoptions::DebugInfoKind DebugInfoKind = codegenoptions::NoDebugInfo; + bool EmitCodeView = false; + + // Add clang-cl arguments. + types::ID InputType = Input.getType(); + if (getToolChain().getDriver().IsCLMode()) + AddClangCLArgs(Args, InputType, CmdArgs, &DebugInfoKind, &EmitCodeView); + + // Pass the linker version in use. + if (Arg *A = Args.getLastArg(options::OPT_mlinker_version_EQ)) { + CmdArgs.push_back("-target-linker-version"); + CmdArgs.push_back(A->getValue()); + } + + if (!shouldUseLeafFramePointer(Args, getToolChain().getTriple())) + CmdArgs.push_back("-momit-leaf-frame-pointer"); + + // Explicitly error on some things we know we don't support and can't just + // ignore. + if (!Args.hasArg(options::OPT_fallow_unsupported)) { + Arg *Unsupported; + if (types::isCXX(InputType) && getToolChain().getTriple().isOSDarwin() && + getToolChain().getArch() == llvm::Triple::x86) { + if ((Unsupported = Args.getLastArg(options::OPT_fapple_kext)) || + (Unsupported = Args.getLastArg(options::OPT_mkernel))) + D.Diag(diag::err_drv_clang_unsupported_opt_cxx_darwin_i386) + << Unsupported->getOption().getName(); + } + } + + Args.AddAllArgs(CmdArgs, options::OPT_v); + Args.AddLastArg(CmdArgs, options::OPT_H); + if (D.CCPrintHeaders && !D.CCGenDiagnostics) { + CmdArgs.push_back("-header-include-file"); + CmdArgs.push_back(D.CCPrintHeadersFilename ? D.CCPrintHeadersFilename + : "-"); + } + Args.AddLastArg(CmdArgs, options::OPT_P); + Args.AddLastArg(CmdArgs, options::OPT_print_ivar_layout); + + if (D.CCLogDiagnostics && !D.CCGenDiagnostics) { + CmdArgs.push_back("-diagnostic-log-file"); + CmdArgs.push_back(D.CCLogDiagnosticsFilename ? D.CCLogDiagnosticsFilename + : "-"); + } + + bool splitDwarfInlining = + Args.hasFlag(options::OPT_fsplit_dwarf_inlining, + options::OPT_fno_split_dwarf_inlining, true); + + Args.ClaimAllArgs(options::OPT_g_Group); + Arg *SplitDwarfArg = Args.getLastArg(options::OPT_gsplit_dwarf); + if (Arg *A = Args.getLastArg(options::OPT_g_Group)) { + // If the last option explicitly specified a debug-info level, use it. + if (A->getOption().matches(options::OPT_gN_Group)) { + DebugInfoKind = DebugLevelToInfoKind(*A); + // If you say "-gsplit-dwarf -gline-tables-only", -gsplit-dwarf loses. + // But -gsplit-dwarf is not a g_group option, hence we have to check the + // order explicitly. (If -gsplit-dwarf wins, we fix DebugInfoKind later.) + // This gets a bit more complicated if you've disabled inline info in the + // skeleton CUs (splitDwarfInlining) - then there's value in composing + // split-dwarf and line-tables-only, so let those compose naturally in + // that case. + // And if you just turned off debug info, (-gsplit-dwarf -g0) - do that. + if (SplitDwarfArg) { + if (A->getIndex() > SplitDwarfArg->getIndex()) { + if (DebugInfoKind == codegenoptions::NoDebugInfo || + (DebugInfoKind == codegenoptions::DebugLineTablesOnly && + splitDwarfInlining)) + SplitDwarfArg = nullptr; + } else if (splitDwarfInlining) + DebugInfoKind = codegenoptions::NoDebugInfo; + } + } else + // For any other 'g' option, use Limited. + DebugInfoKind = codegenoptions::LimitedDebugInfo; + } + + // If a debugger tuning argument appeared, remember it. + if (Arg *A = Args.getLastArg(options::OPT_gTune_Group, + options::OPT_ggdbN_Group)) { + if (A->getOption().matches(options::OPT_glldb)) + DebuggerTuning = llvm::DebuggerKind::LLDB; + else if (A->getOption().matches(options::OPT_gsce)) + DebuggerTuning = llvm::DebuggerKind::SCE; + else + DebuggerTuning = llvm::DebuggerKind::GDB; + } + + // If a -gdwarf argument appeared, remember it. + if (Arg *A = Args.getLastArg(options::OPT_gdwarf_2, options::OPT_gdwarf_3, + options::OPT_gdwarf_4, options::OPT_gdwarf_5)) + DwarfVersion = DwarfVersionNum(A->getSpelling()); + + // Forward -gcodeview. EmitCodeView might have been set by CL-compatibility + // argument parsing. + if (Args.hasArg(options::OPT_gcodeview) || EmitCodeView) { + // DwarfVersion remains at 0 if no explicit choice was made. + CmdArgs.push_back("-gcodeview"); + } else if (DwarfVersion == 0 && + DebugInfoKind != codegenoptions::NoDebugInfo) { + DwarfVersion = getToolChain().GetDefaultDwarfVersion(); + } + + // We ignore flags -gstrict-dwarf and -grecord-gcc-switches for now. + Args.ClaimAllArgs(options::OPT_g_flags_Group); + + // Column info is included by default for everything except PS4 and CodeView. + // Clang doesn't track end columns, just starting columns, which, in theory, + // is fine for CodeView (and PDB). In practice, however, the Microsoft + // debuggers don't handle missing end columns well, so it's better not to + // include any column info. + if (Args.hasFlag(options::OPT_gcolumn_info, options::OPT_gno_column_info, + /*Default=*/ !IsPS4CPU && !(IsWindowsMSVC && EmitCodeView))) + CmdArgs.push_back("-dwarf-column-info"); + + // FIXME: Move backend command line options to the module. + // If -gline-tables-only is the last option it wins. + if (DebugInfoKind != codegenoptions::DebugLineTablesOnly && + Args.hasArg(options::OPT_gmodules)) { + DebugInfoKind = codegenoptions::LimitedDebugInfo; + CmdArgs.push_back("-dwarf-ext-refs"); + CmdArgs.push_back("-fmodule-format=obj"); + } + + // -gsplit-dwarf should turn on -g and enable the backend dwarf + // splitting and extraction. + // FIXME: Currently only works on Linux. + if (getToolChain().getTriple().isOSLinux() && SplitDwarfArg) { + if (!splitDwarfInlining) + CmdArgs.push_back("-fno-split-dwarf-inlining"); + if (DebugInfoKind == codegenoptions::NoDebugInfo) + DebugInfoKind = codegenoptions::LimitedDebugInfo; + CmdArgs.push_back("-backend-option"); + CmdArgs.push_back("-split-dwarf=Enable"); + } + + // After we've dealt with all combinations of things that could + // make DebugInfoKind be other than None or DebugLineTablesOnly, + // figure out if we need to "upgrade" it to standalone debug info. + // We parse these two '-f' options whether or not they will be used, + // to claim them even if you wrote "-fstandalone-debug -gline-tables-only" + bool NeedFullDebug = Args.hasFlag(options::OPT_fstandalone_debug, + options::OPT_fno_standalone_debug, + getToolChain().GetDefaultStandaloneDebug()); + if (DebugInfoKind == codegenoptions::LimitedDebugInfo && NeedFullDebug) + DebugInfoKind = codegenoptions::FullDebugInfo; + RenderDebugEnablingArgs(Args, CmdArgs, DebugInfoKind, DwarfVersion, + DebuggerTuning); + + // -fdebug-macro turns on macro debug info generation. + if (Args.hasFlag(options::OPT_fdebug_macro, options::OPT_fno_debug_macro, + false)) + CmdArgs.push_back("-debug-info-macro"); + + // -ggnu-pubnames turns on gnu style pubnames in the backend. + if (Args.hasArg(options::OPT_ggnu_pubnames)) { + CmdArgs.push_back("-backend-option"); + CmdArgs.push_back("-generate-gnu-dwarf-pub-sections"); + } + + // -gdwarf-aranges turns on the emission of the aranges section in the + // backend. + // Always enabled on the PS4. + if (Args.hasArg(options::OPT_gdwarf_aranges) || IsPS4CPU) { + CmdArgs.push_back("-backend-option"); + CmdArgs.push_back("-generate-arange-section"); + } + + if (Args.hasFlag(options::OPT_fdebug_types_section, + options::OPT_fno_debug_types_section, false)) { + CmdArgs.push_back("-backend-option"); + CmdArgs.push_back("-generate-type-units"); + } + + bool UseSeparateSections = isUseSeparateSections(Triple); + + if (Args.hasFlag(options::OPT_ffunction_sections, + options::OPT_fno_function_sections, UseSeparateSections)) { + CmdArgs.push_back("-ffunction-sections"); + } + + if (Args.hasFlag(options::OPT_fdata_sections, options::OPT_fno_data_sections, + UseSeparateSections)) { + CmdArgs.push_back("-fdata-sections"); + } + + if (!Args.hasFlag(options::OPT_funique_section_names, + options::OPT_fno_unique_section_names, true)) + CmdArgs.push_back("-fno-unique-section-names"); + + Args.AddAllArgs(CmdArgs, options::OPT_finstrument_functions); + + if (Args.hasFlag(options::OPT_fxray_instrument, + options::OPT_fnoxray_instrument, false)) { + const char *const XRayInstrumentOption = "-fxray-instrument"; + if (Triple.getOS() == llvm::Triple::Linux) + switch (Triple.getArch()) { + case llvm::Triple::x86_64: + case llvm::Triple::arm: + case llvm::Triple::aarch64: + case llvm::Triple::ppc64le: + case llvm::Triple::mips: + case llvm::Triple::mipsel: + case llvm::Triple::mips64: + case llvm::Triple::mips64el: + // Supported. + break; + default: + D.Diag(diag::err_drv_clang_unsupported) + << (std::string(XRayInstrumentOption) + " on " + Triple.str()); + } + else + D.Diag(diag::err_drv_clang_unsupported) + << (std::string(XRayInstrumentOption) + " on non-Linux target OS"); + CmdArgs.push_back(XRayInstrumentOption); + if (const Arg *A = + Args.getLastArg(options::OPT_fxray_instruction_threshold_, + options::OPT_fxray_instruction_threshold_EQ)) { + CmdArgs.push_back("-fxray-instruction-threshold"); + CmdArgs.push_back(A->getValue()); + } + } + + addPGOAndCoverageFlags(C, D, Output, Args, CmdArgs); + + // Add runtime flag for PS4 when PGO or Coverage are enabled. + if (getToolChain().getTriple().isPS4CPU()) + PS4cpu::addProfileRTArgs(getToolChain(), Args, CmdArgs); + + // Pass options for controlling the default header search paths. + if (Args.hasArg(options::OPT_nostdinc)) { + CmdArgs.push_back("-nostdsysteminc"); + CmdArgs.push_back("-nobuiltininc"); + } else { + if (Args.hasArg(options::OPT_nostdlibinc)) + CmdArgs.push_back("-nostdsysteminc"); + Args.AddLastArg(CmdArgs, options::OPT_nostdincxx); + Args.AddLastArg(CmdArgs, options::OPT_nobuiltininc); + } + + // Pass the path to compiler resource files. + CmdArgs.push_back("-resource-dir"); + CmdArgs.push_back(D.ResourceDir.c_str()); + + Args.AddLastArg(CmdArgs, options::OPT_working_directory); + + bool ARCMTEnabled = false; + if (!Args.hasArg(options::OPT_fno_objc_arc, options::OPT_fobjc_arc)) { + if (const Arg *A = Args.getLastArg(options::OPT_ccc_arcmt_check, + options::OPT_ccc_arcmt_modify, + options::OPT_ccc_arcmt_migrate)) { + ARCMTEnabled = true; + switch (A->getOption().getID()) { + default: + llvm_unreachable("missed a case"); + case options::OPT_ccc_arcmt_check: + CmdArgs.push_back("-arcmt-check"); + break; + case options::OPT_ccc_arcmt_modify: + CmdArgs.push_back("-arcmt-modify"); + break; + case options::OPT_ccc_arcmt_migrate: + CmdArgs.push_back("-arcmt-migrate"); + CmdArgs.push_back("-mt-migrate-directory"); + CmdArgs.push_back(A->getValue()); + + Args.AddLastArg(CmdArgs, options::OPT_arcmt_migrate_report_output); + Args.AddLastArg(CmdArgs, options::OPT_arcmt_migrate_emit_arc_errors); + break; + } + } + } else { + Args.ClaimAllArgs(options::OPT_ccc_arcmt_check); + Args.ClaimAllArgs(options::OPT_ccc_arcmt_modify); + Args.ClaimAllArgs(options::OPT_ccc_arcmt_migrate); + } + + if (const Arg *A = Args.getLastArg(options::OPT_ccc_objcmt_migrate)) { + if (ARCMTEnabled) { + D.Diag(diag::err_drv_argument_not_allowed_with) << A->getAsString(Args) + << "-ccc-arcmt-migrate"; + } + CmdArgs.push_back("-mt-migrate-directory"); + CmdArgs.push_back(A->getValue()); + + if (!Args.hasArg(options::OPT_objcmt_migrate_literals, + options::OPT_objcmt_migrate_subscripting, + options::OPT_objcmt_migrate_property)) { + // None specified, means enable them all. + CmdArgs.push_back("-objcmt-migrate-literals"); + CmdArgs.push_back("-objcmt-migrate-subscripting"); + CmdArgs.push_back("-objcmt-migrate-property"); + } else { + Args.AddLastArg(CmdArgs, options::OPT_objcmt_migrate_literals); + Args.AddLastArg(CmdArgs, options::OPT_objcmt_migrate_subscripting); + Args.AddLastArg(CmdArgs, options::OPT_objcmt_migrate_property); + } + } else { + Args.AddLastArg(CmdArgs, options::OPT_objcmt_migrate_literals); + Args.AddLastArg(CmdArgs, options::OPT_objcmt_migrate_subscripting); + Args.AddLastArg(CmdArgs, options::OPT_objcmt_migrate_property); + Args.AddLastArg(CmdArgs, options::OPT_objcmt_migrate_all); + Args.AddLastArg(CmdArgs, options::OPT_objcmt_migrate_readonly_property); + Args.AddLastArg(CmdArgs, options::OPT_objcmt_migrate_readwrite_property); + Args.AddLastArg(CmdArgs, options::OPT_objcmt_migrate_property_dot_syntax); + Args.AddLastArg(CmdArgs, options::OPT_objcmt_migrate_annotation); + Args.AddLastArg(CmdArgs, options::OPT_objcmt_migrate_instancetype); + Args.AddLastArg(CmdArgs, options::OPT_objcmt_migrate_nsmacros); + Args.AddLastArg(CmdArgs, options::OPT_objcmt_migrate_protocol_conformance); + Args.AddLastArg(CmdArgs, options::OPT_objcmt_atomic_property); + Args.AddLastArg(CmdArgs, options::OPT_objcmt_returns_innerpointer_property); + Args.AddLastArg(CmdArgs, options::OPT_objcmt_ns_nonatomic_iosonly); + Args.AddLastArg(CmdArgs, options::OPT_objcmt_migrate_designated_init); + Args.AddLastArg(CmdArgs, options::OPT_objcmt_whitelist_dir_path); + } + + // Add preprocessing options like -I, -D, etc. if we are using the + // preprocessor. + // + // FIXME: Support -fpreprocessed + if (types::getPreprocessedType(InputType) != types::TY_INVALID) + AddPreprocessingOptions(C, JA, D, Args, CmdArgs, Output, Inputs); + + // Don't warn about "clang -c -DPIC -fPIC test.i" because libtool.m4 assumes + // that "The compiler can only warn and ignore the option if not recognized". + // When building with ccache, it will pass -D options to clang even on + // preprocessed inputs and configure concludes that -fPIC is not supported. + Args.ClaimAllArgs(options::OPT_D); + + // Manually translate -O4 to -O3; let clang reject others. + if (Arg *A = Args.getLastArg(options::OPT_O_Group)) { + if (A->getOption().matches(options::OPT_O4)) { + CmdArgs.push_back("-O3"); + D.Diag(diag::warn_O4_is_O3); + } else { + A->render(Args, CmdArgs); + } + } + + // Warn about ignored options to clang. + for (const Arg *A : + Args.filtered(options::OPT_clang_ignored_gcc_optimization_f_Group)) { + D.Diag(diag::warn_ignored_gcc_optimization) << A->getAsString(Args); + A->claim(); + } + + claimNoWarnArgs(Args); + + Args.AddAllArgs(CmdArgs, options::OPT_R_Group); + + Args.AddAllArgs(CmdArgs, options::OPT_W_Group); + if (Args.hasFlag(options::OPT_pedantic, options::OPT_no_pedantic, false)) + CmdArgs.push_back("-pedantic"); + Args.AddLastArg(CmdArgs, options::OPT_pedantic_errors); + Args.AddLastArg(CmdArgs, options::OPT_w); + + // Handle -{std, ansi, trigraphs} -- take the last of -{std, ansi} + // (-ansi is equivalent to -std=c89 or -std=c++98). + // + // If a std is supplied, only add -trigraphs if it follows the + // option. + bool ImplyVCPPCXXVer = false; + if (Arg *Std = Args.getLastArg(options::OPT_std_EQ, options::OPT_ansi)) { + if (Std->getOption().matches(options::OPT_ansi)) + if (types::isCXX(InputType)) + CmdArgs.push_back("-std=c++98"); + else + CmdArgs.push_back("-std=c89"); + else + Std->render(Args, CmdArgs); + + // If -f(no-)trigraphs appears after the language standard flag, honor it. + if (Arg *A = Args.getLastArg(options::OPT_std_EQ, options::OPT_ansi, + options::OPT_ftrigraphs, + options::OPT_fno_trigraphs)) + if (A != Std) + A->render(Args, CmdArgs); + } else { + // Honor -std-default. + // + // FIXME: Clang doesn't correctly handle -std= when the input language + // doesn't match. For the time being just ignore this for C++ inputs; + // eventually we want to do all the standard defaulting here instead of + // splitting it between the driver and clang -cc1. + if (!types::isCXX(InputType)) + Args.AddAllArgsTranslated(CmdArgs, options::OPT_std_default_EQ, "-std=", + /*Joined=*/true); + else if (IsWindowsMSVC) + ImplyVCPPCXXVer = true; + + Args.AddLastArg(CmdArgs, options::OPT_ftrigraphs, + options::OPT_fno_trigraphs); + } + + // GCC's behavior for -Wwrite-strings is a bit strange: + // * In C, this "warning flag" changes the types of string literals from + // 'char[N]' to 'const char[N]', and thus triggers an unrelated warning + // for the discarded qualifier. + // * In C++, this is just a normal warning flag. + // + // Implementing this warning correctly in C is hard, so we follow GCC's + // behavior for now. FIXME: Directly diagnose uses of a string literal as + // a non-const char* in C, rather than using this crude hack. + if (!types::isCXX(InputType)) { + // FIXME: This should behave just like a warning flag, and thus should also + // respect -Weverything, -Wno-everything, -Werror=write-strings, and so on. + Arg *WriteStrings = + Args.getLastArg(options::OPT_Wwrite_strings, + options::OPT_Wno_write_strings, options::OPT_w); + if (WriteStrings && + WriteStrings->getOption().matches(options::OPT_Wwrite_strings)) + CmdArgs.push_back("-fconst-strings"); + } + + // GCC provides a macro definition '__DEPRECATED' when -Wdeprecated is active + // during C++ compilation, which it is by default. GCC keeps this define even + // in the presence of '-w', match this behavior bug-for-bug. + if (types::isCXX(InputType) && + Args.hasFlag(options::OPT_Wdeprecated, options::OPT_Wno_deprecated, + true)) { + CmdArgs.push_back("-fdeprecated-macro"); + } + + // Translate GCC's misnamer '-fasm' arguments to '-fgnu-keywords'. + if (Arg *Asm = Args.getLastArg(options::OPT_fasm, options::OPT_fno_asm)) { + if (Asm->getOption().matches(options::OPT_fasm)) + CmdArgs.push_back("-fgnu-keywords"); + else + CmdArgs.push_back("-fno-gnu-keywords"); + } + + if (ShouldDisableDwarfDirectory(Args, getToolChain())) + CmdArgs.push_back("-fno-dwarf-directory-asm"); + + if (ShouldDisableAutolink(Args, getToolChain())) + CmdArgs.push_back("-fno-autolink"); + + // Add in -fdebug-compilation-dir if necessary. + addDebugCompDirArg(Args, CmdArgs); + + for (const Arg *A : Args.filtered(options::OPT_fdebug_prefix_map_EQ)) { + StringRef Map = A->getValue(); + if (Map.find('=') == StringRef::npos) + D.Diag(diag::err_drv_invalid_argument_to_fdebug_prefix_map) << Map; + else + CmdArgs.push_back(Args.MakeArgString("-fdebug-prefix-map=" + Map)); + A->claim(); + } + + if (Arg *A = Args.getLastArg(options::OPT_ftemplate_depth_, + options::OPT_ftemplate_depth_EQ)) { + CmdArgs.push_back("-ftemplate-depth"); + CmdArgs.push_back(A->getValue()); + } + + if (Arg *A = Args.getLastArg(options::OPT_foperator_arrow_depth_EQ)) { + CmdArgs.push_back("-foperator-arrow-depth"); + CmdArgs.push_back(A->getValue()); + } + + if (Arg *A = Args.getLastArg(options::OPT_fconstexpr_depth_EQ)) { + CmdArgs.push_back("-fconstexpr-depth"); + CmdArgs.push_back(A->getValue()); + } + + if (Arg *A = Args.getLastArg(options::OPT_fconstexpr_steps_EQ)) { + CmdArgs.push_back("-fconstexpr-steps"); + CmdArgs.push_back(A->getValue()); + } + + if (Arg *A = Args.getLastArg(options::OPT_fbracket_depth_EQ)) { + CmdArgs.push_back("-fbracket-depth"); + CmdArgs.push_back(A->getValue()); + } + + if (Arg *A = Args.getLastArg(options::OPT_Wlarge_by_value_copy_EQ, + options::OPT_Wlarge_by_value_copy_def)) { + if (A->getNumValues()) { + StringRef bytes = A->getValue(); + CmdArgs.push_back(Args.MakeArgString("-Wlarge-by-value-copy=" + bytes)); + } else + CmdArgs.push_back("-Wlarge-by-value-copy=64"); // default value + } + + if (Args.hasArg(options::OPT_relocatable_pch)) + CmdArgs.push_back("-relocatable-pch"); + + if (Arg *A = Args.getLastArg(options::OPT_fconstant_string_class_EQ)) { + CmdArgs.push_back("-fconstant-string-class"); + CmdArgs.push_back(A->getValue()); + } + + if (Arg *A = Args.getLastArg(options::OPT_ftabstop_EQ)) { + CmdArgs.push_back("-ftabstop"); + CmdArgs.push_back(A->getValue()); + } + + CmdArgs.push_back("-ferror-limit"); + if (Arg *A = Args.getLastArg(options::OPT_ferror_limit_EQ)) + CmdArgs.push_back(A->getValue()); + else + CmdArgs.push_back("19"); + + if (Arg *A = Args.getLastArg(options::OPT_fmacro_backtrace_limit_EQ)) { + CmdArgs.push_back("-fmacro-backtrace-limit"); + CmdArgs.push_back(A->getValue()); + } + + if (Arg *A = Args.getLastArg(options::OPT_ftemplate_backtrace_limit_EQ)) { + CmdArgs.push_back("-ftemplate-backtrace-limit"); + CmdArgs.push_back(A->getValue()); + } + + if (Arg *A = Args.getLastArg(options::OPT_fconstexpr_backtrace_limit_EQ)) { + CmdArgs.push_back("-fconstexpr-backtrace-limit"); + CmdArgs.push_back(A->getValue()); + } + + if (Arg *A = Args.getLastArg(options::OPT_fspell_checking_limit_EQ)) { + CmdArgs.push_back("-fspell-checking-limit"); + CmdArgs.push_back(A->getValue()); + } + + // Pass -fmessage-length=. + CmdArgs.push_back("-fmessage-length"); + if (Arg *A = Args.getLastArg(options::OPT_fmessage_length_EQ)) { + CmdArgs.push_back(A->getValue()); + } else { + // If -fmessage-length=N was not specified, determine whether this is a + // terminal and, if so, implicitly define -fmessage-length appropriately. + unsigned N = llvm::sys::Process::StandardErrColumns(); + CmdArgs.push_back(Args.MakeArgString(Twine(N))); + } + + // -fvisibility= and -fvisibility-ms-compat are of a piece. + if (const Arg *A = Args.getLastArg(options::OPT_fvisibility_EQ, + options::OPT_fvisibility_ms_compat)) { + if (A->getOption().matches(options::OPT_fvisibility_EQ)) { + CmdArgs.push_back("-fvisibility"); + CmdArgs.push_back(A->getValue()); + } else { + assert(A->getOption().matches(options::OPT_fvisibility_ms_compat)); + CmdArgs.push_back("-fvisibility"); + CmdArgs.push_back("hidden"); + CmdArgs.push_back("-ftype-visibility"); + CmdArgs.push_back("default"); + } + } + + Args.AddLastArg(CmdArgs, options::OPT_fvisibility_inlines_hidden); + + Args.AddLastArg(CmdArgs, options::OPT_ftlsmodel_EQ); + + // -fhosted is default. + bool IsHosted = true; + if (Args.hasFlag(options::OPT_ffreestanding, options::OPT_fhosted, false) || + KernelOrKext) { + CmdArgs.push_back("-ffreestanding"); + IsHosted = false; + } + + // Forward -f (flag) options which we can pass directly. + Args.AddLastArg(CmdArgs, options::OPT_femit_all_decls); + Args.AddLastArg(CmdArgs, options::OPT_fheinous_gnu_extensions); + Args.AddLastArg(CmdArgs, options::OPT_fno_operator_names); + // Emulated TLS is enabled by default on Android, and can be enabled manually + // with -femulated-tls. + bool EmulatedTLSDefault = Triple.isAndroid() || Triple.isWindowsCygwinEnvironment(); + if (Args.hasFlag(options::OPT_femulated_tls, options::OPT_fno_emulated_tls, + EmulatedTLSDefault)) + CmdArgs.push_back("-femulated-tls"); + // AltiVec-like language extensions aren't relevant for assembling. + if (!isa<PreprocessJobAction>(JA) || Output.getType() != types::TY_PP_Asm) { + Args.AddLastArg(CmdArgs, options::OPT_faltivec); + Args.AddLastArg(CmdArgs, options::OPT_fzvector); + } + Args.AddLastArg(CmdArgs, options::OPT_fdiagnostics_show_template_tree); + Args.AddLastArg(CmdArgs, options::OPT_fno_elide_type); + + // Forward flags for OpenMP. We don't do this if the current action is an + // device offloading action other than OpenMP. + if (Args.hasFlag(options::OPT_fopenmp, options::OPT_fopenmp_EQ, + options::OPT_fno_openmp, false) && + (JA.isDeviceOffloading(Action::OFK_None) || + JA.isDeviceOffloading(Action::OFK_OpenMP))) { + switch (getToolChain().getDriver().getOpenMPRuntime(Args)) { + case Driver::OMPRT_OMP: + case Driver::OMPRT_IOMP5: + // Clang can generate useful OpenMP code for these two runtime libraries. + CmdArgs.push_back("-fopenmp"); + + // If no option regarding the use of TLS in OpenMP codegeneration is + // given, decide a default based on the target. Otherwise rely on the + // options and pass the right information to the frontend. + if (!Args.hasFlag(options::OPT_fopenmp_use_tls, + options::OPT_fnoopenmp_use_tls, /*Default=*/true)) + CmdArgs.push_back("-fnoopenmp-use-tls"); + Args.AddAllArgs(CmdArgs, options::OPT_fopenmp_version_EQ); + break; + default: + // By default, if Clang doesn't know how to generate useful OpenMP code + // for a specific runtime library, we just don't pass the '-fopenmp' flag + // down to the actual compilation. + // FIXME: It would be better to have a mode which *only* omits IR + // generation based on the OpenMP support so that we get consistent + // semantic analysis, etc. + break; + } + } + + const SanitizerArgs &Sanitize = getToolChain().getSanitizerArgs(); + Sanitize.addArgs(getToolChain(), Args, CmdArgs, InputType); + + // Report an error for -faltivec on anything other than PowerPC. + if (const Arg *A = Args.getLastArg(options::OPT_faltivec)) { + const llvm::Triple::ArchType Arch = getToolChain().getArch(); + if (!(Arch == llvm::Triple::ppc || Arch == llvm::Triple::ppc64 || + Arch == llvm::Triple::ppc64le)) + D.Diag(diag::err_drv_argument_only_allowed_with) << A->getAsString(Args) + << "ppc/ppc64/ppc64le"; + } + + // -fzvector is incompatible with -faltivec. + if (Arg *A = Args.getLastArg(options::OPT_fzvector)) + if (Args.hasArg(options::OPT_faltivec)) + D.Diag(diag::err_drv_argument_not_allowed_with) << A->getAsString(Args) + << "-faltivec"; + + if (getToolChain().SupportsProfiling()) + Args.AddLastArg(CmdArgs, options::OPT_pg); + + if (getToolChain().SupportsProfiling()) + Args.AddLastArg(CmdArgs, options::OPT_mfentry); + + // -flax-vector-conversions is default. + if (!Args.hasFlag(options::OPT_flax_vector_conversions, + options::OPT_fno_lax_vector_conversions)) + CmdArgs.push_back("-fno-lax-vector-conversions"); + + if (Args.getLastArg(options::OPT_fapple_kext) || + (Args.hasArg(options::OPT_mkernel) && types::isCXX(InputType))) + CmdArgs.push_back("-fapple-kext"); + + Args.AddLastArg(CmdArgs, options::OPT_fobjc_sender_dependent_dispatch); + Args.AddLastArg(CmdArgs, options::OPT_fdiagnostics_print_source_range_info); + Args.AddLastArg(CmdArgs, options::OPT_fdiagnostics_parseable_fixits); + Args.AddLastArg(CmdArgs, options::OPT_ftime_report); + Args.AddLastArg(CmdArgs, options::OPT_ftrapv); + + if (Arg *A = Args.getLastArg(options::OPT_ftrapv_handler_EQ)) { + CmdArgs.push_back("-ftrapv-handler"); + CmdArgs.push_back(A->getValue()); + } + + Args.AddLastArg(CmdArgs, options::OPT_ftrap_function_EQ); + + // -fno-strict-overflow implies -fwrapv if it isn't disabled, but + // -fstrict-overflow won't turn off an explicitly enabled -fwrapv. + if (Arg *A = Args.getLastArg(options::OPT_fwrapv, options::OPT_fno_wrapv)) { + if (A->getOption().matches(options::OPT_fwrapv)) + CmdArgs.push_back("-fwrapv"); + } else if (Arg *A = Args.getLastArg(options::OPT_fstrict_overflow, + options::OPT_fno_strict_overflow)) { + if (A->getOption().matches(options::OPT_fno_strict_overflow)) + CmdArgs.push_back("-fwrapv"); + } + + if (Arg *A = Args.getLastArg(options::OPT_freroll_loops, + options::OPT_fno_reroll_loops)) + if (A->getOption().matches(options::OPT_freroll_loops)) + CmdArgs.push_back("-freroll-loops"); + + Args.AddLastArg(CmdArgs, options::OPT_fwritable_strings); + Args.AddLastArg(CmdArgs, options::OPT_funroll_loops, + options::OPT_fno_unroll_loops); + + Args.AddLastArg(CmdArgs, options::OPT_pthread); + + // -stack-protector=0 is default. + unsigned StackProtectorLevel = 0; + // NVPTX doesn't support stack protectors; from the compiler's perspective, it + // doesn't even have a stack! + if (!Triple.isNVPTX()) { + if (Arg *A = Args.getLastArg(options::OPT_fno_stack_protector, + options::OPT_fstack_protector_all, + options::OPT_fstack_protector_strong, + options::OPT_fstack_protector)) { + if (A->getOption().matches(options::OPT_fstack_protector)) { + StackProtectorLevel = std::max<unsigned>( + LangOptions::SSPOn, + getToolChain().GetDefaultStackProtectorLevel(KernelOrKext)); + } else if (A->getOption().matches(options::OPT_fstack_protector_strong)) + StackProtectorLevel = LangOptions::SSPStrong; + else if (A->getOption().matches(options::OPT_fstack_protector_all)) + StackProtectorLevel = LangOptions::SSPReq; + } else { + StackProtectorLevel = + getToolChain().GetDefaultStackProtectorLevel(KernelOrKext); + // Only use a default stack protector on Darwin in case -ffreestanding + // is not specified. + if (Triple.isOSDarwin() && !IsHosted) + StackProtectorLevel = 0; + } + } + if (StackProtectorLevel) { + CmdArgs.push_back("-stack-protector"); + CmdArgs.push_back(Args.MakeArgString(Twine(StackProtectorLevel))); + } + + // --param ssp-buffer-size= + for (const Arg *A : Args.filtered(options::OPT__param)) { + StringRef Str(A->getValue()); + if (Str.startswith("ssp-buffer-size=")) { + if (StackProtectorLevel) { + CmdArgs.push_back("-stack-protector-buffer-size"); + // FIXME: Verify the argument is a valid integer. + CmdArgs.push_back(Args.MakeArgString(Str.drop_front(16))); + } + A->claim(); + } + } + + // Translate -mstackrealign + if (Args.hasFlag(options::OPT_mstackrealign, options::OPT_mno_stackrealign, + false)) + CmdArgs.push_back(Args.MakeArgString("-mstackrealign")); + + if (Args.hasArg(options::OPT_mstack_alignment)) { + StringRef alignment = Args.getLastArgValue(options::OPT_mstack_alignment); + CmdArgs.push_back(Args.MakeArgString("-mstack-alignment=" + alignment)); + } + + if (Args.hasArg(options::OPT_mstack_probe_size)) { + StringRef Size = Args.getLastArgValue(options::OPT_mstack_probe_size); + + if (!Size.empty()) + CmdArgs.push_back(Args.MakeArgString("-mstack-probe-size=" + Size)); + else + CmdArgs.push_back("-mstack-probe-size=0"); + } + + switch (getToolChain().getArch()) { + case llvm::Triple::aarch64: + case llvm::Triple::aarch64_be: + case llvm::Triple::arm: + case llvm::Triple::armeb: + case llvm::Triple::thumb: + case llvm::Triple::thumbeb: + CmdArgs.push_back("-fallow-half-arguments-and-returns"); + break; + + default: + break; + } + + if (Arg *A = Args.getLastArg(options::OPT_mrestrict_it, + options::OPT_mno_restrict_it)) { + if (A->getOption().matches(options::OPT_mrestrict_it)) { + CmdArgs.push_back("-backend-option"); + CmdArgs.push_back("-arm-restrict-it"); + } else { + CmdArgs.push_back("-backend-option"); + CmdArgs.push_back("-arm-no-restrict-it"); + } + } else if (Triple.isOSWindows() && + (Triple.getArch() == llvm::Triple::arm || + Triple.getArch() == llvm::Triple::thumb)) { + // Windows on ARM expects restricted IT blocks + CmdArgs.push_back("-backend-option"); + CmdArgs.push_back("-arm-restrict-it"); + } + + // Forward -cl options to -cc1 + if (Args.getLastArg(options::OPT_cl_opt_disable)) { + CmdArgs.push_back("-cl-opt-disable"); + } + if (Args.getLastArg(options::OPT_cl_strict_aliasing)) { + CmdArgs.push_back("-cl-strict-aliasing"); + } + if (Args.getLastArg(options::OPT_cl_single_precision_constant)) { + CmdArgs.push_back("-cl-single-precision-constant"); + } + if (Args.getLastArg(options::OPT_cl_finite_math_only)) { + CmdArgs.push_back("-cl-finite-math-only"); + } + if (Args.getLastArg(options::OPT_cl_kernel_arg_info)) { + CmdArgs.push_back("-cl-kernel-arg-info"); + } + if (Args.getLastArg(options::OPT_cl_unsafe_math_optimizations)) { + CmdArgs.push_back("-cl-unsafe-math-optimizations"); + } + if (Args.getLastArg(options::OPT_cl_fast_relaxed_math)) { + CmdArgs.push_back("-cl-fast-relaxed-math"); + } + if (Args.getLastArg(options::OPT_cl_mad_enable)) { + CmdArgs.push_back("-cl-mad-enable"); + } + if (Args.getLastArg(options::OPT_cl_no_signed_zeros)) { + CmdArgs.push_back("-cl-no-signed-zeros"); + } + if (Arg *A = Args.getLastArg(options::OPT_cl_std_EQ)) { + std::string CLStdStr = "-cl-std="; + CLStdStr += A->getValue(); + CmdArgs.push_back(Args.MakeArgString(CLStdStr)); + } + if (Args.getLastArg(options::OPT_cl_denorms_are_zero)) { + CmdArgs.push_back("-cl-denorms-are-zero"); + } + if (Args.getLastArg(options::OPT_cl_fp32_correctly_rounded_divide_sqrt)) { + CmdArgs.push_back("-cl-fp32-correctly-rounded-divide-sqrt"); + } + + // Forward -f options with positive and negative forms; we translate + // these by hand. + if (Arg *A = Args.getLastArg(options::OPT_fprofile_sample_use_EQ)) { + StringRef fname = A->getValue(); + if (!llvm::sys::fs::exists(fname)) + D.Diag(diag::err_drv_no_such_file) << fname; + else + A->render(Args, CmdArgs); + } + + if (Args.hasFlag(options::OPT_fdebug_info_for_profiling, + options::OPT_fno_debug_info_for_profiling, false)) + CmdArgs.push_back("-fdebug-info-for-profiling"); + + // -fbuiltin is default unless -mkernel is used. + bool UseBuiltins = + Args.hasFlag(options::OPT_fbuiltin, options::OPT_fno_builtin, + !Args.hasArg(options::OPT_mkernel)); + if (!UseBuiltins) + CmdArgs.push_back("-fno-builtin"); + + // -ffreestanding implies -fno-builtin. + if (Args.hasArg(options::OPT_ffreestanding)) + UseBuiltins = false; + + // Process the -fno-builtin-* options. + for (const auto &Arg : Args) { + const Option &O = Arg->getOption(); + if (!O.matches(options::OPT_fno_builtin_)) + continue; + + Arg->claim(); + // If -fno-builtin is specified, then there's no need to pass the option to + // the frontend. + if (!UseBuiltins) + continue; + + StringRef FuncName = Arg->getValue(); + CmdArgs.push_back(Args.MakeArgString("-fno-builtin-" + FuncName)); + } + + if (!Args.hasFlag(options::OPT_fassume_sane_operator_new, + options::OPT_fno_assume_sane_operator_new)) + CmdArgs.push_back("-fno-assume-sane-operator-new"); + + // -fblocks=0 is default. + if (Args.hasFlag(options::OPT_fblocks, options::OPT_fno_blocks, + getToolChain().IsBlocksDefault()) || + (Args.hasArg(options::OPT_fgnu_runtime) && + Args.hasArg(options::OPT_fobjc_nonfragile_abi) && + !Args.hasArg(options::OPT_fno_blocks))) { + CmdArgs.push_back("-fblocks"); + + if (!Args.hasArg(options::OPT_fgnu_runtime) && + !getToolChain().hasBlocksRuntime()) + CmdArgs.push_back("-fblocks-runtime-optional"); + } + + if (Args.hasFlag(options::OPT_fcoroutines_ts, options::OPT_fno_coroutines_ts, + false) && + types::isCXX(InputType)) { + CmdArgs.push_back("-fcoroutines-ts"); + } + + // -fmodules enables the use of precompiled modules (off by default). + // Users can pass -fno-cxx-modules to turn off modules support for + // C++/Objective-C++ programs. + bool HaveClangModules = false; + if (Args.hasFlag(options::OPT_fmodules, options::OPT_fno_modules, false)) { + bool AllowedInCXX = Args.hasFlag(options::OPT_fcxx_modules, + options::OPT_fno_cxx_modules, true); + if (AllowedInCXX || !types::isCXX(InputType)) { + CmdArgs.push_back("-fmodules"); + HaveClangModules = true; + } + } + + bool HaveAnyModules = HaveClangModules; + if (Args.hasArg(options::OPT_fmodules_ts)) { + CmdArgs.push_back("-fmodules-ts"); + HaveAnyModules = true; + } + + // -fmodule-maps enables implicit reading of module map files. By default, + // this is enabled if we are using Clang's flavor of precompiled modules. + if (Args.hasFlag(options::OPT_fimplicit_module_maps, + options::OPT_fno_implicit_module_maps, HaveClangModules)) { + CmdArgs.push_back("-fimplicit-module-maps"); + } + + // -fmodules-decluse checks that modules used are declared so (off by + // default). + if (Args.hasFlag(options::OPT_fmodules_decluse, + options::OPT_fno_modules_decluse, false)) { + CmdArgs.push_back("-fmodules-decluse"); + } + + // -fmodules-strict-decluse is like -fmodule-decluse, but also checks that + // all #included headers are part of modules. + if (Args.hasFlag(options::OPT_fmodules_strict_decluse, + options::OPT_fno_modules_strict_decluse, false)) { + CmdArgs.push_back("-fmodules-strict-decluse"); + } + + // -fno-implicit-modules turns off implicitly compiling modules on demand. + if (!Args.hasFlag(options::OPT_fimplicit_modules, + options::OPT_fno_implicit_modules, HaveClangModules)) { + if (HaveAnyModules) + CmdArgs.push_back("-fno-implicit-modules"); + } else if (HaveAnyModules) { + // -fmodule-cache-path specifies where our implicitly-built module files + // should be written. + SmallString<128> Path; + if (Arg *A = Args.getLastArg(options::OPT_fmodules_cache_path)) + Path = A->getValue(); + if (C.isForDiagnostics()) { + // When generating crash reports, we want to emit the modules along with + // the reproduction sources, so we ignore any provided module path. + Path = Output.getFilename(); + llvm::sys::path::replace_extension(Path, ".cache"); + llvm::sys::path::append(Path, "modules"); + } else if (Path.empty()) { + // No module path was provided: use the default. + llvm::sys::path::system_temp_directory(/*erasedOnReboot=*/false, Path); + llvm::sys::path::append(Path, "org.llvm.clang."); + appendUserToPath(Path); + llvm::sys::path::append(Path, "ModuleCache"); + } + const char Arg[] = "-fmodules-cache-path="; + Path.insert(Path.begin(), Arg, Arg + strlen(Arg)); + CmdArgs.push_back(Args.MakeArgString(Path)); + } + + if (HaveAnyModules) { + // -fprebuilt-module-path specifies where to load the prebuilt module files. + for (const Arg *A : Args.filtered(options::OPT_fprebuilt_module_path)) + CmdArgs.push_back(Args.MakeArgString( + std::string("-fprebuilt-module-path=") + A->getValue())); + } + + // -fmodule-name specifies the module that is currently being built (or + // used for header checking by -fmodule-maps). + Args.AddLastArg(CmdArgs, options::OPT_fmodule_name_EQ); + + // -fmodule-map-file can be used to specify files containing module + // definitions. + Args.AddAllArgs(CmdArgs, options::OPT_fmodule_map_file); + + // -fbuiltin-module-map can be used to load the clang + // builtin headers modulemap file. + if (Args.hasArg(options::OPT_fbuiltin_module_map)) { + SmallString<128> BuiltinModuleMap(getToolChain().getDriver().ResourceDir); + llvm::sys::path::append(BuiltinModuleMap, "include"); + llvm::sys::path::append(BuiltinModuleMap, "module.modulemap"); + if (llvm::sys::fs::exists(BuiltinModuleMap)) { + CmdArgs.push_back(Args.MakeArgString("-fmodule-map-file=" + + BuiltinModuleMap)); + } + } + + // -fmodule-file can be used to specify files containing precompiled modules. + if (HaveAnyModules) + Args.AddAllArgs(CmdArgs, options::OPT_fmodule_file); + else + Args.ClaimAllArgs(options::OPT_fmodule_file); + + // When building modules and generating crashdumps, we need to dump a module + // dependency VFS alongside the output. + if (HaveClangModules && C.isForDiagnostics()) { + SmallString<128> VFSDir(Output.getFilename()); + llvm::sys::path::replace_extension(VFSDir, ".cache"); + // Add the cache directory as a temp so the crash diagnostics pick it up. + C.addTempFile(Args.MakeArgString(VFSDir)); + + llvm::sys::path::append(VFSDir, "vfs"); + CmdArgs.push_back("-module-dependency-dir"); + CmdArgs.push_back(Args.MakeArgString(VFSDir)); + } + + if (HaveClangModules) + Args.AddLastArg(CmdArgs, options::OPT_fmodules_user_build_path); + + // Pass through all -fmodules-ignore-macro arguments. + Args.AddAllArgs(CmdArgs, options::OPT_fmodules_ignore_macro); + Args.AddLastArg(CmdArgs, options::OPT_fmodules_prune_interval); + Args.AddLastArg(CmdArgs, options::OPT_fmodules_prune_after); + + Args.AddLastArg(CmdArgs, options::OPT_fbuild_session_timestamp); + + if (Arg *A = Args.getLastArg(options::OPT_fbuild_session_file)) { + if (Args.hasArg(options::OPT_fbuild_session_timestamp)) + D.Diag(diag::err_drv_argument_not_allowed_with) + << A->getAsString(Args) << "-fbuild-session-timestamp"; + + llvm::sys::fs::file_status Status; + if (llvm::sys::fs::status(A->getValue(), Status)) + D.Diag(diag::err_drv_no_such_file) << A->getValue(); + CmdArgs.push_back( + Args.MakeArgString("-fbuild-session-timestamp=" + + Twine((uint64_t)Status.getLastModificationTime() + .time_since_epoch() + .count()))); + } + + if (Args.getLastArg(options::OPT_fmodules_validate_once_per_build_session)) { + if (!Args.getLastArg(options::OPT_fbuild_session_timestamp, + options::OPT_fbuild_session_file)) + D.Diag(diag::err_drv_modules_validate_once_requires_timestamp); + + Args.AddLastArg(CmdArgs, + options::OPT_fmodules_validate_once_per_build_session); + } + + Args.AddLastArg(CmdArgs, options::OPT_fmodules_validate_system_headers); + Args.AddLastArg(CmdArgs, options::OPT_fmodules_disable_diagnostic_validation); + + // -faccess-control is default. + if (Args.hasFlag(options::OPT_fno_access_control, + options::OPT_faccess_control, false)) + CmdArgs.push_back("-fno-access-control"); + + // -felide-constructors is the default. + if (Args.hasFlag(options::OPT_fno_elide_constructors, + options::OPT_felide_constructors, false)) + CmdArgs.push_back("-fno-elide-constructors"); + + ToolChain::RTTIMode RTTIMode = getToolChain().getRTTIMode(); + + if (KernelOrKext || (types::isCXX(InputType) && + (RTTIMode == ToolChain::RM_DisabledExplicitly || + RTTIMode == ToolChain::RM_DisabledImplicitly))) + CmdArgs.push_back("-fno-rtti"); + + // -fshort-enums=0 is default for all architectures except Hexagon. + if (Args.hasFlag(options::OPT_fshort_enums, options::OPT_fno_short_enums, + getToolChain().getArch() == llvm::Triple::hexagon)) + CmdArgs.push_back("-fshort-enums"); + + // -fsigned-char is default. + if (Arg *A = Args.getLastArg( + options::OPT_fsigned_char, options::OPT_fno_signed_char, + options::OPT_funsigned_char, options::OPT_fno_unsigned_char)) { + if (A->getOption().matches(options::OPT_funsigned_char) || + A->getOption().matches(options::OPT_fno_signed_char)) { + CmdArgs.push_back("-fno-signed-char"); + } + } else if (!isSignedCharDefault(getToolChain().getTriple())) { + CmdArgs.push_back("-fno-signed-char"); + } + + // -fuse-cxa-atexit is default. + if (!Args.hasFlag( + options::OPT_fuse_cxa_atexit, options::OPT_fno_use_cxa_atexit, + !IsWindowsCygnus && !IsWindowsGNU && + getToolChain().getTriple().getOS() != llvm::Triple::Solaris && + getToolChain().getArch() != llvm::Triple::hexagon && + getToolChain().getArch() != llvm::Triple::xcore && + ((getToolChain().getTriple().getVendor() != + llvm::Triple::MipsTechnologies) || + getToolChain().getTriple().hasEnvironment())) || + KernelOrKext) + CmdArgs.push_back("-fno-use-cxa-atexit"); + + // -fms-extensions=0 is default. + if (Args.hasFlag(options::OPT_fms_extensions, options::OPT_fno_ms_extensions, + IsWindowsMSVC)) + CmdArgs.push_back("-fms-extensions"); + + // -fno-use-line-directives is default. + if (Args.hasFlag(options::OPT_fuse_line_directives, + options::OPT_fno_use_line_directives, false)) + CmdArgs.push_back("-fuse-line-directives"); + + // -fms-compatibility=0 is default. + if (Args.hasFlag(options::OPT_fms_compatibility, + options::OPT_fno_ms_compatibility, + (IsWindowsMSVC && + Args.hasFlag(options::OPT_fms_extensions, + options::OPT_fno_ms_extensions, true)))) + CmdArgs.push_back("-fms-compatibility"); + + VersionTuple MSVT = + getToolChain().computeMSVCVersion(&getToolChain().getDriver(), Args); + if (!MSVT.empty()) + CmdArgs.push_back( + Args.MakeArgString("-fms-compatibility-version=" + MSVT.getAsString())); + + bool IsMSVC2015Compatible = MSVT.getMajor() >= 19; + if (ImplyVCPPCXXVer) { + StringRef LanguageStandard; + if (const Arg *StdArg = Args.getLastArg(options::OPT__SLASH_std)) { + LanguageStandard = llvm::StringSwitch<StringRef>(StdArg->getValue()) + .Case("c++14", "-std=c++14") + .Case("c++latest", "-std=c++1z") + .Default(""); + if (LanguageStandard.empty()) + D.Diag(clang::diag::warn_drv_unused_argument) + << StdArg->getAsString(Args); + } + + if (LanguageStandard.empty()) { + if (IsMSVC2015Compatible) + LanguageStandard = "-std=c++14"; + else + LanguageStandard = "-std=c++11"; + } + + CmdArgs.push_back(LanguageStandard.data()); + } + + // -fno-borland-extensions is default. + if (Args.hasFlag(options::OPT_fborland_extensions, + options::OPT_fno_borland_extensions, false)) + CmdArgs.push_back("-fborland-extensions"); + + // -fno-declspec is default, except for PS4. + if (Args.hasFlag(options::OPT_fdeclspec, options::OPT_fno_declspec, + getToolChain().getTriple().isPS4())) + CmdArgs.push_back("-fdeclspec"); + else if (Args.hasArg(options::OPT_fno_declspec)) + CmdArgs.push_back("-fno-declspec"); // Explicitly disabling __declspec. + + // -fthreadsafe-static is default, except for MSVC compatibility versions less + // than 19. + if (!Args.hasFlag(options::OPT_fthreadsafe_statics, + options::OPT_fno_threadsafe_statics, + !IsWindowsMSVC || IsMSVC2015Compatible)) + CmdArgs.push_back("-fno-threadsafe-statics"); + + // -fno-delayed-template-parsing is default, except for Windows where MSVC STL + // needs it. + if (Args.hasFlag(options::OPT_fdelayed_template_parsing, + options::OPT_fno_delayed_template_parsing, IsWindowsMSVC)) + CmdArgs.push_back("-fdelayed-template-parsing"); + + // -fgnu-keywords default varies depending on language; only pass if + // specified. + if (Arg *A = Args.getLastArg(options::OPT_fgnu_keywords, + options::OPT_fno_gnu_keywords)) + A->render(Args, CmdArgs); + + if (Args.hasFlag(options::OPT_fgnu89_inline, options::OPT_fno_gnu89_inline, + false)) + CmdArgs.push_back("-fgnu89-inline"); + + if (Args.hasArg(options::OPT_fno_inline)) + CmdArgs.push_back("-fno-inline"); + + if (Arg* InlineArg = Args.getLastArg(options::OPT_finline_functions, + options::OPT_finline_hint_functions, + options::OPT_fno_inline_functions)) + InlineArg->render(Args, CmdArgs); + + Args.AddLastArg(CmdArgs, options::OPT_fexperimental_new_pass_manager, + options::OPT_fno_experimental_new_pass_manager); + + ObjCRuntime objcRuntime = AddObjCRuntimeArgs(Args, CmdArgs, rewriteKind); + + // -fobjc-dispatch-method is only relevant with the nonfragile-abi, and + // legacy is the default. Except for deployment target of 10.5, + // next runtime is always legacy dispatch and -fno-objc-legacy-dispatch + // gets ignored silently. + if (objcRuntime.isNonFragile()) { + if (!Args.hasFlag(options::OPT_fobjc_legacy_dispatch, + options::OPT_fno_objc_legacy_dispatch, + objcRuntime.isLegacyDispatchDefaultForArch( + getToolChain().getArch()))) { + if (getToolChain().UseObjCMixedDispatch()) + CmdArgs.push_back("-fobjc-dispatch-method=mixed"); + else + CmdArgs.push_back("-fobjc-dispatch-method=non-legacy"); + } + } + + // When ObjectiveC legacy runtime is in effect on MacOSX, + // turn on the option to do Array/Dictionary subscripting + // by default. + if (getToolChain().getArch() == llvm::Triple::x86 && + getToolChain().getTriple().isMacOSX() && + !getToolChain().getTriple().isMacOSXVersionLT(10, 7) && + objcRuntime.getKind() == ObjCRuntime::FragileMacOSX && + objcRuntime.isNeXTFamily()) + CmdArgs.push_back("-fobjc-subscripting-legacy-runtime"); + + // -fencode-extended-block-signature=1 is default. + if (getToolChain().IsEncodeExtendedBlockSignatureDefault()) { + CmdArgs.push_back("-fencode-extended-block-signature"); + } + + // Allow -fno-objc-arr to trump -fobjc-arr/-fobjc-arc. + // NOTE: This logic is duplicated in ToolChains.cpp. + bool ARC = isObjCAutoRefCount(Args); + if (ARC) { + getToolChain().CheckObjCARC(); + + CmdArgs.push_back("-fobjc-arc"); + + // FIXME: It seems like this entire block, and several around it should be + // wrapped in isObjC, but for now we just use it here as this is where it + // was being used previously. + if (types::isCXX(InputType) && types::isObjC(InputType)) { + if (getToolChain().GetCXXStdlibType(Args) == ToolChain::CST_Libcxx) + CmdArgs.push_back("-fobjc-arc-cxxlib=libc++"); + else + CmdArgs.push_back("-fobjc-arc-cxxlib=libstdc++"); + } + + // Allow the user to enable full exceptions code emission. + // We define off for Objective-CC, on for Objective-C++. + if (Args.hasFlag(options::OPT_fobjc_arc_exceptions, + options::OPT_fno_objc_arc_exceptions, + /*default*/ types::isCXX(InputType))) + CmdArgs.push_back("-fobjc-arc-exceptions"); + } + + // Silence warning for full exception code emission options when explicitly + // set to use no ARC. + if (Args.hasArg(options::OPT_fno_objc_arc)) { + Args.ClaimAllArgs(options::OPT_fobjc_arc_exceptions); + Args.ClaimAllArgs(options::OPT_fno_objc_arc_exceptions); + } + + // -fobjc-infer-related-result-type is the default, except in the Objective-C + // rewriter. + if (rewriteKind != RK_None) + CmdArgs.push_back("-fno-objc-infer-related-result-type"); + + // Pass down -fobjc-weak or -fno-objc-weak if present. + if (types::isObjC(InputType)) { + auto WeakArg = Args.getLastArg(options::OPT_fobjc_weak, + options::OPT_fno_objc_weak); + if (!WeakArg) { + // nothing to do + } else if (!objcRuntime.allowsWeak()) { + if (WeakArg->getOption().matches(options::OPT_fobjc_weak)) + D.Diag(diag::err_objc_weak_unsupported); + } else { + WeakArg->render(Args, CmdArgs); + } + } + + if (Args.hasFlag(options::OPT_fapplication_extension, + options::OPT_fno_application_extension, false)) + CmdArgs.push_back("-fapplication-extension"); + + // Handle GCC-style exception args. + if (!C.getDriver().IsCLMode()) + addExceptionArgs(Args, InputType, getToolChain(), KernelOrKext, objcRuntime, + CmdArgs); + + if (Args.hasArg(options::OPT_fsjlj_exceptions) || + getToolChain().UseSjLjExceptions(Args)) + CmdArgs.push_back("-fsjlj-exceptions"); + + // C++ "sane" operator new. + if (!Args.hasFlag(options::OPT_fassume_sane_operator_new, + options::OPT_fno_assume_sane_operator_new)) + CmdArgs.push_back("-fno-assume-sane-operator-new"); + + // -frelaxed-template-template-args is off by default, as it is a severe + // breaking change until a corresponding change to template partial ordering + // is provided. + if (Args.hasFlag(options::OPT_frelaxed_template_template_args, + options::OPT_fno_relaxed_template_template_args, false)) + CmdArgs.push_back("-frelaxed-template-template-args"); + + // -fsized-deallocation is off by default, as it is an ABI-breaking change for + // most platforms. + if (Args.hasFlag(options::OPT_fsized_deallocation, + options::OPT_fno_sized_deallocation, false)) + CmdArgs.push_back("-fsized-deallocation"); + + // -faligned-allocation is on by default in C++17 onwards and otherwise off + // by default. + if (Arg *A = Args.getLastArg(options::OPT_faligned_allocation, + options::OPT_fno_aligned_allocation, + options::OPT_faligned_new_EQ)) { + if (A->getOption().matches(options::OPT_fno_aligned_allocation)) + CmdArgs.push_back("-fno-aligned-allocation"); + else + CmdArgs.push_back("-faligned-allocation"); + } + + // The default new alignment can be specified using a dedicated option or via + // a GCC-compatible option that also turns on aligned allocation. + if (Arg *A = Args.getLastArg(options::OPT_fnew_alignment_EQ, + options::OPT_faligned_new_EQ)) + CmdArgs.push_back( + Args.MakeArgString(Twine("-fnew-alignment=") + A->getValue())); + + // -fconstant-cfstrings is default, and may be subject to argument translation + // on Darwin. + if (!Args.hasFlag(options::OPT_fconstant_cfstrings, + options::OPT_fno_constant_cfstrings) || + !Args.hasFlag(options::OPT_mconstant_cfstrings, + options::OPT_mno_constant_cfstrings)) + CmdArgs.push_back("-fno-constant-cfstrings"); + + // -fshort-wchar default varies depending on platform; only + // pass if specified. + if (Arg *A = Args.getLastArg(options::OPT_fshort_wchar, + options::OPT_fno_short_wchar)) + A->render(Args, CmdArgs); + + // -fno-pascal-strings is default, only pass non-default. + if (Args.hasFlag(options::OPT_fpascal_strings, + options::OPT_fno_pascal_strings, false)) + CmdArgs.push_back("-fpascal-strings"); + + // Honor -fpack-struct= and -fpack-struct, if given. Note that + // -fno-pack-struct doesn't apply to -fpack-struct=. + if (Arg *A = Args.getLastArg(options::OPT_fpack_struct_EQ)) { + std::string PackStructStr = "-fpack-struct="; + PackStructStr += A->getValue(); + CmdArgs.push_back(Args.MakeArgString(PackStructStr)); + } else if (Args.hasFlag(options::OPT_fpack_struct, + options::OPT_fno_pack_struct, false)) { + CmdArgs.push_back("-fpack-struct=1"); + } + + // Handle -fmax-type-align=N and -fno-type-align + bool SkipMaxTypeAlign = Args.hasArg(options::OPT_fno_max_type_align); + if (Arg *A = Args.getLastArg(options::OPT_fmax_type_align_EQ)) { + if (!SkipMaxTypeAlign) { + std::string MaxTypeAlignStr = "-fmax-type-align="; + MaxTypeAlignStr += A->getValue(); + CmdArgs.push_back(Args.MakeArgString(MaxTypeAlignStr)); + } + } else if (getToolChain().getTriple().isOSDarwin()) { + if (!SkipMaxTypeAlign) { + std::string MaxTypeAlignStr = "-fmax-type-align=16"; + CmdArgs.push_back(Args.MakeArgString(MaxTypeAlignStr)); + } + } + + // -fcommon is the default unless compiling kernel code or the target says so + bool NoCommonDefault = + KernelOrKext || isNoCommonDefault(getToolChain().getTriple()); + if (!Args.hasFlag(options::OPT_fcommon, options::OPT_fno_common, + !NoCommonDefault)) + CmdArgs.push_back("-fno-common"); + + // -fsigned-bitfields is default, and clang doesn't yet support + // -funsigned-bitfields. + if (!Args.hasFlag(options::OPT_fsigned_bitfields, + options::OPT_funsigned_bitfields)) + D.Diag(diag::warn_drv_clang_unsupported) + << Args.getLastArg(options::OPT_funsigned_bitfields)->getAsString(Args); + + // -fsigned-bitfields is default, and clang doesn't support -fno-for-scope. + if (!Args.hasFlag(options::OPT_ffor_scope, options::OPT_fno_for_scope)) + D.Diag(diag::err_drv_clang_unsupported) + << Args.getLastArg(options::OPT_fno_for_scope)->getAsString(Args); + + // -finput_charset=UTF-8 is default. Reject others + if (Arg *inputCharset = Args.getLastArg(options::OPT_finput_charset_EQ)) { + StringRef value = inputCharset->getValue(); + if (!value.equals_lower("utf-8")) + D.Diag(diag::err_drv_invalid_value) << inputCharset->getAsString(Args) + << value; + } + + // -fexec_charset=UTF-8 is default. Reject others + if (Arg *execCharset = Args.getLastArg(options::OPT_fexec_charset_EQ)) { + StringRef value = execCharset->getValue(); + if (!value.equals_lower("utf-8")) + D.Diag(diag::err_drv_invalid_value) << execCharset->getAsString(Args) + << value; + } + + // -fcaret-diagnostics is default. + if (!Args.hasFlag(options::OPT_fcaret_diagnostics, + options::OPT_fno_caret_diagnostics, true)) + CmdArgs.push_back("-fno-caret-diagnostics"); + + // -fdiagnostics-fixit-info is default, only pass non-default. + if (!Args.hasFlag(options::OPT_fdiagnostics_fixit_info, + options::OPT_fno_diagnostics_fixit_info)) + CmdArgs.push_back("-fno-diagnostics-fixit-info"); + + // Enable -fdiagnostics-show-option by default. + if (Args.hasFlag(options::OPT_fdiagnostics_show_option, + options::OPT_fno_diagnostics_show_option)) + CmdArgs.push_back("-fdiagnostics-show-option"); + + if (const Arg *A = + Args.getLastArg(options::OPT_fdiagnostics_show_category_EQ)) { + CmdArgs.push_back("-fdiagnostics-show-category"); + CmdArgs.push_back(A->getValue()); + } + + if (Args.hasFlag(options::OPT_fdiagnostics_show_hotness, + options::OPT_fno_diagnostics_show_hotness, false)) + CmdArgs.push_back("-fdiagnostics-show-hotness"); + + if (const Arg *A = Args.getLastArg(options::OPT_fdiagnostics_format_EQ)) { + CmdArgs.push_back("-fdiagnostics-format"); + CmdArgs.push_back(A->getValue()); + } + + if (Arg *A = Args.getLastArg( + options::OPT_fdiagnostics_show_note_include_stack, + options::OPT_fno_diagnostics_show_note_include_stack)) { + if (A->getOption().matches( + options::OPT_fdiagnostics_show_note_include_stack)) + CmdArgs.push_back("-fdiagnostics-show-note-include-stack"); + else + CmdArgs.push_back("-fno-diagnostics-show-note-include-stack"); + } + + // Color diagnostics are parsed by the driver directly from argv + // and later re-parsed to construct this job; claim any possible + // color diagnostic here to avoid warn_drv_unused_argument and + // diagnose bad OPT_fdiagnostics_color_EQ values. + for (Arg *A : Args) { + const Option &O = A->getOption(); + if (!O.matches(options::OPT_fcolor_diagnostics) && + !O.matches(options::OPT_fdiagnostics_color) && + !O.matches(options::OPT_fno_color_diagnostics) && + !O.matches(options::OPT_fno_diagnostics_color) && + !O.matches(options::OPT_fdiagnostics_color_EQ)) + continue; + if (O.matches(options::OPT_fdiagnostics_color_EQ)) { + StringRef Value(A->getValue()); + if (Value != "always" && Value != "never" && Value != "auto") + getToolChain().getDriver().Diag(diag::err_drv_clang_unsupported) + << ("-fdiagnostics-color=" + Value).str(); + } + A->claim(); + } + if (D.getDiags().getDiagnosticOptions().ShowColors) + CmdArgs.push_back("-fcolor-diagnostics"); + + if (Args.hasArg(options::OPT_fansi_escape_codes)) + CmdArgs.push_back("-fansi-escape-codes"); + + if (!Args.hasFlag(options::OPT_fshow_source_location, + options::OPT_fno_show_source_location)) + CmdArgs.push_back("-fno-show-source-location"); + + if (Args.hasArg(options::OPT_fdiagnostics_absolute_paths)) + CmdArgs.push_back("-fdiagnostics-absolute-paths"); + + if (!Args.hasFlag(options::OPT_fshow_column, options::OPT_fno_show_column, + true)) + CmdArgs.push_back("-fno-show-column"); + + if (!Args.hasFlag(options::OPT_fspell_checking, + options::OPT_fno_spell_checking)) + CmdArgs.push_back("-fno-spell-checking"); + + // -fno-asm-blocks is default. + if (Args.hasFlag(options::OPT_fasm_blocks, options::OPT_fno_asm_blocks, + false)) + CmdArgs.push_back("-fasm-blocks"); + + // -fgnu-inline-asm is default. + if (!Args.hasFlag(options::OPT_fgnu_inline_asm, + options::OPT_fno_gnu_inline_asm, true)) + CmdArgs.push_back("-fno-gnu-inline-asm"); + + // Enable vectorization per default according to the optimization level + // selected. For optimization levels that want vectorization we use the alias + // option to simplify the hasFlag logic. + bool EnableVec = shouldEnableVectorizerAtOLevel(Args, false); + OptSpecifier VectorizeAliasOption = + EnableVec ? options::OPT_O_Group : options::OPT_fvectorize; + if (Args.hasFlag(options::OPT_fvectorize, VectorizeAliasOption, + options::OPT_fno_vectorize, EnableVec)) + CmdArgs.push_back("-vectorize-loops"); + + // -fslp-vectorize is enabled based on the optimization level selected. + bool EnableSLPVec = shouldEnableVectorizerAtOLevel(Args, true); + OptSpecifier SLPVectAliasOption = + EnableSLPVec ? options::OPT_O_Group : options::OPT_fslp_vectorize; + if (Args.hasFlag(options::OPT_fslp_vectorize, SLPVectAliasOption, + options::OPT_fno_slp_vectorize, EnableSLPVec)) + CmdArgs.push_back("-vectorize-slp"); + + // -fno-slp-vectorize-aggressive is default. + if (Args.hasFlag(options::OPT_fslp_vectorize_aggressive, + options::OPT_fno_slp_vectorize_aggressive, false)) + CmdArgs.push_back("-vectorize-slp-aggressive"); + + if (Arg *A = Args.getLastArg(options::OPT_fshow_overloads_EQ)) + A->render(Args, CmdArgs); + + if (Arg *A = Args.getLastArg( + options::OPT_fsanitize_undefined_strip_path_components_EQ)) + A->render(Args, CmdArgs); + + // -fdollars-in-identifiers default varies depending on platform and + // language; only pass if specified. + if (Arg *A = Args.getLastArg(options::OPT_fdollars_in_identifiers, + options::OPT_fno_dollars_in_identifiers)) { + if (A->getOption().matches(options::OPT_fdollars_in_identifiers)) + CmdArgs.push_back("-fdollars-in-identifiers"); + else + CmdArgs.push_back("-fno-dollars-in-identifiers"); + } + + // -funit-at-a-time is default, and we don't support -fno-unit-at-a-time for + // practical purposes. + if (Arg *A = Args.getLastArg(options::OPT_funit_at_a_time, + options::OPT_fno_unit_at_a_time)) { + if (A->getOption().matches(options::OPT_fno_unit_at_a_time)) + D.Diag(diag::warn_drv_clang_unsupported) << A->getAsString(Args); + } + + if (Args.hasFlag(options::OPT_fapple_pragma_pack, + options::OPT_fno_apple_pragma_pack, false)) + CmdArgs.push_back("-fapple-pragma-pack"); + + // le32-specific flags: + // -fno-math-builtin: clang should not convert math builtins to intrinsics + // by default. + if (getToolChain().getArch() == llvm::Triple::le32) { + CmdArgs.push_back("-fno-math-builtin"); + } + + if (Args.hasFlag(options::OPT_fsave_optimization_record, + options::OPT_fno_save_optimization_record, false)) { + CmdArgs.push_back("-opt-record-file"); + + const Arg *A = Args.getLastArg(options::OPT_foptimization_record_file_EQ); + if (A) { + CmdArgs.push_back(A->getValue()); + } else { + SmallString<128> F; + if (Output.isFilename() && (Args.hasArg(options::OPT_c) || + Args.hasArg(options::OPT_S))) { + F = Output.getFilename(); + } else { + // Use the input filename. + F = llvm::sys::path::stem(Input.getBaseInput()); + + // If we're compiling for an offload architecture (i.e. a CUDA device), + // we need to make the file name for the device compilation different + // from the host compilation. + if (!JA.isDeviceOffloading(Action::OFK_None) && + !JA.isDeviceOffloading(Action::OFK_Host)) { + llvm::sys::path::replace_extension(F, ""); + F += Action::GetOffloadingFileNamePrefix(JA.getOffloadingDeviceKind(), + Triple.normalize()); + F += "-"; + F += JA.getOffloadingArch(); + } + } + + llvm::sys::path::replace_extension(F, "opt.yaml"); + CmdArgs.push_back(Args.MakeArgString(F)); + } + } + +// Default to -fno-builtin-str{cat,cpy} on Darwin for ARM. +// +// FIXME: Now that PR4941 has been fixed this can be enabled. +#if 0 + if (getToolChain().getTriple().isOSDarwin() && + (getToolChain().getArch() == llvm::Triple::arm || + getToolChain().getArch() == llvm::Triple::thumb)) { + if (!Args.hasArg(options::OPT_fbuiltin_strcat)) + CmdArgs.push_back("-fno-builtin-strcat"); + if (!Args.hasArg(options::OPT_fbuiltin_strcpy)) + CmdArgs.push_back("-fno-builtin-strcpy"); + } +#endif + + // Enable rewrite includes if the user's asked for it or if we're generating + // diagnostics. + // TODO: Once -module-dependency-dir works with -frewrite-includes it'd be + // nice to enable this when doing a crashdump for modules as well. + if (Args.hasFlag(options::OPT_frewrite_includes, + options::OPT_fno_rewrite_includes, false) || + (C.isForDiagnostics() && !HaveAnyModules)) + CmdArgs.push_back("-frewrite-includes"); + + // Only allow -traditional or -traditional-cpp outside in preprocessing modes. + if (Arg *A = Args.getLastArg(options::OPT_traditional, + options::OPT_traditional_cpp)) { + if (isa<PreprocessJobAction>(JA)) + CmdArgs.push_back("-traditional-cpp"); + else + D.Diag(diag::err_drv_clang_unsupported) << A->getAsString(Args); + } + + Args.AddLastArg(CmdArgs, options::OPT_dM); + Args.AddLastArg(CmdArgs, options::OPT_dD); + + // Handle serialized diagnostics. + if (Arg *A = Args.getLastArg(options::OPT__serialize_diags)) { + CmdArgs.push_back("-serialize-diagnostic-file"); + CmdArgs.push_back(Args.MakeArgString(A->getValue())); + } + + if (Args.hasArg(options::OPT_fretain_comments_from_system_headers)) + CmdArgs.push_back("-fretain-comments-from-system-headers"); + + // Forward -fcomment-block-commands to -cc1. + Args.AddAllArgs(CmdArgs, options::OPT_fcomment_block_commands); + // Forward -fparse-all-comments to -cc1. + Args.AddAllArgs(CmdArgs, options::OPT_fparse_all_comments); + + // Turn -fplugin=name.so into -load name.so + for (const Arg *A : Args.filtered(options::OPT_fplugin_EQ)) { + CmdArgs.push_back("-load"); + CmdArgs.push_back(A->getValue()); + A->claim(); + } + + // Setup statistics file output. + if (const Arg *A = Args.getLastArg(options::OPT_save_stats_EQ)) { + StringRef SaveStats = A->getValue(); + + SmallString<128> StatsFile; + bool DoSaveStats = false; + if (SaveStats == "obj") { + if (Output.isFilename()) { + StatsFile.assign(Output.getFilename()); + llvm::sys::path::remove_filename(StatsFile); + } + DoSaveStats = true; + } else if (SaveStats == "cwd") { + DoSaveStats = true; + } else { + D.Diag(diag::err_drv_invalid_value) << A->getAsString(Args) << SaveStats; + } + + if (DoSaveStats) { + StringRef BaseName = llvm::sys::path::filename(Input.getBaseInput()); + llvm::sys::path::append(StatsFile, BaseName); + llvm::sys::path::replace_extension(StatsFile, "stats"); + CmdArgs.push_back(Args.MakeArgString(Twine("-stats-file=") + + StatsFile)); + } + } + + // Forward -Xclang arguments to -cc1, and -mllvm arguments to the LLVM option + // parser. + Args.AddAllArgValues(CmdArgs, options::OPT_Xclang); + for (const Arg *A : Args.filtered(options::OPT_mllvm)) { + A->claim(); + + // We translate this by hand to the -cc1 argument, since nightly test uses + // it and developers have been trained to spell it with -mllvm. Both + // spellings are now deprecated and should be removed. + if (StringRef(A->getValue(0)) == "-disable-llvm-optzns") { + CmdArgs.push_back("-disable-llvm-optzns"); + } else { + A->render(Args, CmdArgs); + } + } + + // With -save-temps, we want to save the unoptimized bitcode output from the + // CompileJobAction, use -disable-llvm-passes to get pristine IR generated + // by the frontend. + // When -fembed-bitcode is enabled, optimized bitcode is emitted because it + // has slightly different breakdown between stages. + // FIXME: -fembed-bitcode -save-temps will save optimized bitcode instead of + // pristine IR generated by the frontend. Ideally, a new compile action should + // be added so both IR can be captured. + if (C.getDriver().isSaveTempsEnabled() && + !(C.getDriver().embedBitcodeInObject() && !C.getDriver().isUsingLTO()) && + isa<CompileJobAction>(JA)) + CmdArgs.push_back("-disable-llvm-passes"); + + if (Output.getType() == types::TY_Dependencies) { + // Handled with other dependency code. + } else if (Output.isFilename()) { + CmdArgs.push_back("-o"); + CmdArgs.push_back(Output.getFilename()); + } else { + assert(Output.isNothing() && "Invalid output."); + } + + addDashXForInput(Args, Input, CmdArgs); + + if (Input.isFilename()) + CmdArgs.push_back(Input.getFilename()); + else + Input.getInputArg().renderAsInput(Args, CmdArgs); + + Args.AddAllArgs(CmdArgs, options::OPT_undef); + + const char *Exec = getToolChain().getDriver().getClangProgramPath(); + + // Optionally embed the -cc1 level arguments into the debug info, for build + // analysis. + if (getToolChain().UseDwarfDebugFlags()) { + ArgStringList OriginalArgs; + for (const auto &Arg : Args) + Arg->render(Args, OriginalArgs); + + SmallString<256> Flags; + Flags += Exec; + for (const char *OriginalArg : OriginalArgs) { + SmallString<128> EscapedArg; + EscapeSpacesAndBackslashes(OriginalArg, EscapedArg); + Flags += " "; + Flags += EscapedArg; + } + CmdArgs.push_back("-dwarf-debug-flags"); + CmdArgs.push_back(Args.MakeArgString(Flags)); + } + + // Add the split debug info name to the command lines here so we + // can propagate it to the backend. + bool SplitDwarf = SplitDwarfArg && getToolChain().getTriple().isOSLinux() && + (isa<AssembleJobAction>(JA) || isa<CompileJobAction>(JA) || + isa<BackendJobAction>(JA)); + const char *SplitDwarfOut; + if (SplitDwarf) { + CmdArgs.push_back("-split-dwarf-file"); + SplitDwarfOut = SplitDebugName(Args, Input); + CmdArgs.push_back(SplitDwarfOut); + } + + // Host-side cuda compilation receives device-side outputs as Inputs[1...]. + // Include them with -fcuda-include-gpubinary. + if (IsCuda && Inputs.size() > 1) + for (auto I = std::next(Inputs.begin()), E = Inputs.end(); I != E; ++I) { + CmdArgs.push_back("-fcuda-include-gpubinary"); + CmdArgs.push_back(I->getFilename()); + } + + // OpenMP offloading device jobs take the argument -fopenmp-host-ir-file-path + // to specify the result of the compile phase on the host, so the meaningful + // device declarations can be identified. Also, -fopenmp-is-device is passed + // along to tell the frontend that it is generating code for a device, so that + // only the relevant declarations are emitted. + if (IsOpenMPDevice && Inputs.size() == 2) { + CmdArgs.push_back("-fopenmp-is-device"); + CmdArgs.push_back("-fopenmp-host-ir-file-path"); + CmdArgs.push_back(Args.MakeArgString(Inputs.back().getFilename())); + } + + // For all the host OpenMP offloading compile jobs we need to pass the targets + // information using -fopenmp-targets= option. + if (isa<CompileJobAction>(JA) && JA.isHostOffloading(Action::OFK_OpenMP)) { + SmallString<128> TargetInfo("-fopenmp-targets="); + + Arg *Tgts = Args.getLastArg(options::OPT_fopenmp_targets_EQ); + assert(Tgts && Tgts->getNumValues() && + "OpenMP offloading has to have targets specified."); + for (unsigned i = 0; i < Tgts->getNumValues(); ++i) { + if (i) + TargetInfo += ','; + // We need to get the string from the triple because it may be not exactly + // the same as the one we get directly from the arguments. + llvm::Triple T(Tgts->getValue(i)); + TargetInfo += T.getTriple(); + } + CmdArgs.push_back(Args.MakeArgString(TargetInfo.str())); + } + + bool WholeProgramVTables = + Args.hasFlag(options::OPT_fwhole_program_vtables, + options::OPT_fno_whole_program_vtables, false); + if (WholeProgramVTables) { + if (!D.isUsingLTO()) + D.Diag(diag::err_drv_argument_only_allowed_with) + << "-fwhole-program-vtables" + << "-flto"; + CmdArgs.push_back("-fwhole-program-vtables"); + } + + // Finally add the compile command to the compilation. + if (Args.hasArg(options::OPT__SLASH_fallback) && + Output.getType() == types::TY_Object && + (InputType == types::TY_C || InputType == types::TY_CXX)) { + auto CLCommand = + getCLFallback()->GetCommand(C, JA, Output, Inputs, Args, LinkingOutput); + C.addCommand(llvm::make_unique<FallbackCommand>( + JA, *this, Exec, CmdArgs, Inputs, std::move(CLCommand))); + } else if (Args.hasArg(options::OPT__SLASH_fallback) && + isa<PrecompileJobAction>(JA)) { + // In /fallback builds, run the main compilation even if the pch generation + // fails, so that the main compilation's fallback to cl.exe runs. + C.addCommand(llvm::make_unique<ForceSuccessCommand>(JA, *this, Exec, + CmdArgs, Inputs)); + } else { + C.addCommand(llvm::make_unique<Command>(JA, *this, Exec, CmdArgs, Inputs)); + } + + // Handle the debug info splitting at object creation time if we're + // creating an object. + // TODO: Currently only works on linux with newer objcopy. + if (SplitDwarf && Output.getType() == types::TY_Object) + SplitDebugInfo(getToolChain(), C, *this, JA, Args, Output, SplitDwarfOut); + + if (Arg *A = Args.getLastArg(options::OPT_pg)) + if (Args.hasArg(options::OPT_fomit_frame_pointer)) + D.Diag(diag::err_drv_argument_not_allowed_with) << "-fomit-frame-pointer" + << A->getAsString(Args); + + // Claim some arguments which clang supports automatically. + + // -fpch-preprocess is used with gcc to add a special marker in the output to + // include the PCH file. Clang's PTH solution is completely transparent, so we + // do not need to deal with it at all. + Args.ClaimAllArgs(options::OPT_fpch_preprocess); + + // Claim some arguments which clang doesn't support, but we don't + // care to warn the user about. + Args.ClaimAllArgs(options::OPT_clang_ignored_f_Group); + Args.ClaimAllArgs(options::OPT_clang_ignored_m_Group); + + // Disable warnings for clang -E -emit-llvm foo.c + Args.ClaimAllArgs(options::OPT_emit_llvm); +} + +Clang::Clang(const ToolChain &TC) + // CAUTION! The first constructor argument ("clang") is not arbitrary, + // as it is for other tools. Some operations on a Tool actually test + // whether that tool is Clang based on the Tool's Name as a string. + : Tool("clang", "clang frontend", TC, RF_Full) {} + +Clang::~Clang() {} + +/// Add options related to the Objective-C runtime/ABI. +/// +/// Returns true if the runtime is non-fragile. +ObjCRuntime Clang::AddObjCRuntimeArgs(const ArgList &args, + ArgStringList &cmdArgs, + RewriteKind rewriteKind) const { + // Look for the controlling runtime option. + Arg *runtimeArg = + args.getLastArg(options::OPT_fnext_runtime, options::OPT_fgnu_runtime, + options::OPT_fobjc_runtime_EQ); + + // Just forward -fobjc-runtime= to the frontend. This supercedes + // options about fragility. + if (runtimeArg && + runtimeArg->getOption().matches(options::OPT_fobjc_runtime_EQ)) { + ObjCRuntime runtime; + StringRef value = runtimeArg->getValue(); + if (runtime.tryParse(value)) { + getToolChain().getDriver().Diag(diag::err_drv_unknown_objc_runtime) + << value; + } + + runtimeArg->render(args, cmdArgs); + return runtime; + } + + // Otherwise, we'll need the ABI "version". Version numbers are + // slightly confusing for historical reasons: + // 1 - Traditional "fragile" ABI + // 2 - Non-fragile ABI, version 1 + // 3 - Non-fragile ABI, version 2 + unsigned objcABIVersion = 1; + // If -fobjc-abi-version= is present, use that to set the version. + if (Arg *abiArg = args.getLastArg(options::OPT_fobjc_abi_version_EQ)) { + StringRef value = abiArg->getValue(); + if (value == "1") + objcABIVersion = 1; + else if (value == "2") + objcABIVersion = 2; + else if (value == "3") + objcABIVersion = 3; + else + getToolChain().getDriver().Diag(diag::err_drv_clang_unsupported) << value; + } else { + // Otherwise, determine if we are using the non-fragile ABI. + bool nonFragileABIIsDefault = + (rewriteKind == RK_NonFragile || + (rewriteKind == RK_None && + getToolChain().IsObjCNonFragileABIDefault())); + if (args.hasFlag(options::OPT_fobjc_nonfragile_abi, + options::OPT_fno_objc_nonfragile_abi, + nonFragileABIIsDefault)) { +// Determine the non-fragile ABI version to use. +#ifdef DISABLE_DEFAULT_NONFRAGILEABI_TWO + unsigned nonFragileABIVersion = 1; +#else + unsigned nonFragileABIVersion = 2; +#endif + + if (Arg *abiArg = + args.getLastArg(options::OPT_fobjc_nonfragile_abi_version_EQ)) { + StringRef value = abiArg->getValue(); + if (value == "1") + nonFragileABIVersion = 1; + else if (value == "2") + nonFragileABIVersion = 2; + else + getToolChain().getDriver().Diag(diag::err_drv_clang_unsupported) + << value; + } + + objcABIVersion = 1 + nonFragileABIVersion; + } else { + objcABIVersion = 1; + } + } + + // We don't actually care about the ABI version other than whether + // it's non-fragile. + bool isNonFragile = objcABIVersion != 1; + + // If we have no runtime argument, ask the toolchain for its default runtime. + // However, the rewriter only really supports the Mac runtime, so assume that. + ObjCRuntime runtime; + if (!runtimeArg) { + switch (rewriteKind) { + case RK_None: + runtime = getToolChain().getDefaultObjCRuntime(isNonFragile); + break; + case RK_Fragile: + runtime = ObjCRuntime(ObjCRuntime::FragileMacOSX, VersionTuple()); + break; + case RK_NonFragile: + runtime = ObjCRuntime(ObjCRuntime::MacOSX, VersionTuple()); + break; + } + + // -fnext-runtime + } else if (runtimeArg->getOption().matches(options::OPT_fnext_runtime)) { + // On Darwin, make this use the default behavior for the toolchain. + if (getToolChain().getTriple().isOSDarwin()) { + runtime = getToolChain().getDefaultObjCRuntime(isNonFragile); + + // Otherwise, build for a generic macosx port. + } else { + runtime = ObjCRuntime(ObjCRuntime::MacOSX, VersionTuple()); + } + + // -fgnu-runtime + } else { + assert(runtimeArg->getOption().matches(options::OPT_fgnu_runtime)); + // Legacy behaviour is to target the gnustep runtime if we are in + // non-fragile mode or the GCC runtime in fragile mode. + if (isNonFragile) + runtime = ObjCRuntime(ObjCRuntime::GNUstep, VersionTuple(1, 6)); + else + runtime = ObjCRuntime(ObjCRuntime::GCC, VersionTuple()); + } + + cmdArgs.push_back( + args.MakeArgString("-fobjc-runtime=" + runtime.getAsString())); + return runtime; +} + +static bool maybeConsumeDash(const std::string &EH, size_t &I) { + bool HaveDash = (I + 1 < EH.size() && EH[I + 1] == '-'); + I += HaveDash; + return !HaveDash; +} + +namespace { +struct EHFlags { + bool Synch = false; + bool Asynch = false; + bool NoUnwindC = false; +}; +} // end anonymous namespace + +/// /EH controls whether to run destructor cleanups when exceptions are +/// thrown. There are three modifiers: +/// - s: Cleanup after "synchronous" exceptions, aka C++ exceptions. +/// - a: Cleanup after "asynchronous" exceptions, aka structured exceptions. +/// The 'a' modifier is unimplemented and fundamentally hard in LLVM IR. +/// - c: Assume that extern "C" functions are implicitly nounwind. +/// The default is /EHs-c-, meaning cleanups are disabled. +static EHFlags parseClangCLEHFlags(const Driver &D, const ArgList &Args) { + EHFlags EH; + + std::vector<std::string> EHArgs = + Args.getAllArgValues(options::OPT__SLASH_EH); + for (auto EHVal : EHArgs) { + for (size_t I = 0, E = EHVal.size(); I != E; ++I) { + switch (EHVal[I]) { + case 'a': + EH.Asynch = maybeConsumeDash(EHVal, I); + if (EH.Asynch) + EH.Synch = false; + continue; + case 'c': + EH.NoUnwindC = maybeConsumeDash(EHVal, I); + continue; + case 's': + EH.Synch = maybeConsumeDash(EHVal, I); + if (EH.Synch) + EH.Asynch = false; + continue; + default: + break; + } + D.Diag(clang::diag::err_drv_invalid_value) << "/EH" << EHVal; + break; + } + } + // The /GX, /GX- flags are only processed if there are not /EH flags. + // The default is that /GX is not specified. + if (EHArgs.empty() && + Args.hasFlag(options::OPT__SLASH_GX, options::OPT__SLASH_GX_, + /*default=*/false)) { + EH.Synch = true; + EH.NoUnwindC = true; + } + + return EH; +} + +void Clang::AddClangCLArgs(const ArgList &Args, types::ID InputType, + ArgStringList &CmdArgs, + codegenoptions::DebugInfoKind *DebugInfoKind, + bool *EmitCodeView) const { + unsigned RTOptionID = options::OPT__SLASH_MT; + + if (Args.hasArg(options::OPT__SLASH_LDd)) + // The /LDd option implies /MTd. The dependent lib part can be overridden, + // but defining _DEBUG is sticky. + RTOptionID = options::OPT__SLASH_MTd; + + if (Arg *A = Args.getLastArg(options::OPT__SLASH_M_Group)) + RTOptionID = A->getOption().getID(); + + StringRef FlagForCRT; + switch (RTOptionID) { + case options::OPT__SLASH_MD: + if (Args.hasArg(options::OPT__SLASH_LDd)) + CmdArgs.push_back("-D_DEBUG"); + CmdArgs.push_back("-D_MT"); + CmdArgs.push_back("-D_DLL"); + FlagForCRT = "--dependent-lib=msvcrt"; + break; + case options::OPT__SLASH_MDd: + CmdArgs.push_back("-D_DEBUG"); + CmdArgs.push_back("-D_MT"); + CmdArgs.push_back("-D_DLL"); + FlagForCRT = "--dependent-lib=msvcrtd"; + break; + case options::OPT__SLASH_MT: + if (Args.hasArg(options::OPT__SLASH_LDd)) + CmdArgs.push_back("-D_DEBUG"); + CmdArgs.push_back("-D_MT"); + CmdArgs.push_back("-flto-visibility-public-std"); + FlagForCRT = "--dependent-lib=libcmt"; + break; + case options::OPT__SLASH_MTd: + CmdArgs.push_back("-D_DEBUG"); + CmdArgs.push_back("-D_MT"); + CmdArgs.push_back("-flto-visibility-public-std"); + FlagForCRT = "--dependent-lib=libcmtd"; + break; + default: + llvm_unreachable("Unexpected option ID."); + } + + if (Args.hasArg(options::OPT__SLASH_Zl)) { + CmdArgs.push_back("-D_VC_NODEFAULTLIB"); + } else { + CmdArgs.push_back(FlagForCRT.data()); + + // This provides POSIX compatibility (maps 'open' to '_open'), which most + // users want. The /Za flag to cl.exe turns this off, but it's not + // implemented in clang. + CmdArgs.push_back("--dependent-lib=oldnames"); + } + + // Both /showIncludes and /E (and /EP) write to stdout. Allowing both + // would produce interleaved output, so ignore /showIncludes in such cases. + if (!Args.hasArg(options::OPT_E) && !Args.hasArg(options::OPT__SLASH_EP)) + if (Arg *A = Args.getLastArg(options::OPT_show_includes)) + A->render(Args, CmdArgs); + + // This controls whether or not we emit RTTI data for polymorphic types. + if (Args.hasFlag(options::OPT__SLASH_GR_, options::OPT__SLASH_GR, + /*default=*/false)) + CmdArgs.push_back("-fno-rtti-data"); + + // This controls whether or not we emit stack-protector instrumentation. + // In MSVC, Buffer Security Check (/GS) is on by default. + if (Args.hasFlag(options::OPT__SLASH_GS, options::OPT__SLASH_GS_, + /*default=*/true)) { + CmdArgs.push_back("-stack-protector"); + CmdArgs.push_back(Args.MakeArgString(Twine(LangOptions::SSPStrong))); + } + + // Emit CodeView if -Z7, -Zd, or -gline-tables-only are present. + if (Arg *DebugInfoArg = + Args.getLastArg(options::OPT__SLASH_Z7, options::OPT__SLASH_Zd, + options::OPT_gline_tables_only)) { + *EmitCodeView = true; + if (DebugInfoArg->getOption().matches(options::OPT__SLASH_Z7)) + *DebugInfoKind = codegenoptions::LimitedDebugInfo; + else + *DebugInfoKind = codegenoptions::DebugLineTablesOnly; + CmdArgs.push_back("-gcodeview"); + } else { + *EmitCodeView = false; + } + + const Driver &D = getToolChain().getDriver(); + EHFlags EH = parseClangCLEHFlags(D, Args); + if (EH.Synch || EH.Asynch) { + if (types::isCXX(InputType)) + CmdArgs.push_back("-fcxx-exceptions"); + CmdArgs.push_back("-fexceptions"); + } + if (types::isCXX(InputType) && EH.Synch && EH.NoUnwindC) + CmdArgs.push_back("-fexternc-nounwind"); + + // /EP should expand to -E -P. + if (Args.hasArg(options::OPT__SLASH_EP)) { + CmdArgs.push_back("-E"); + CmdArgs.push_back("-P"); + } + + unsigned VolatileOptionID; + if (getToolChain().getArch() == llvm::Triple::x86_64 || + getToolChain().getArch() == llvm::Triple::x86) + VolatileOptionID = options::OPT__SLASH_volatile_ms; + else + VolatileOptionID = options::OPT__SLASH_volatile_iso; + + if (Arg *A = Args.getLastArg(options::OPT__SLASH_volatile_Group)) + VolatileOptionID = A->getOption().getID(); + + if (VolatileOptionID == options::OPT__SLASH_volatile_ms) + CmdArgs.push_back("-fms-volatile"); + + Arg *MostGeneralArg = Args.getLastArg(options::OPT__SLASH_vmg); + Arg *BestCaseArg = Args.getLastArg(options::OPT__SLASH_vmb); + if (MostGeneralArg && BestCaseArg) + D.Diag(clang::diag::err_drv_argument_not_allowed_with) + << MostGeneralArg->getAsString(Args) << BestCaseArg->getAsString(Args); + + if (MostGeneralArg) { + Arg *SingleArg = Args.getLastArg(options::OPT__SLASH_vms); + Arg *MultipleArg = Args.getLastArg(options::OPT__SLASH_vmm); + Arg *VirtualArg = Args.getLastArg(options::OPT__SLASH_vmv); + + Arg *FirstConflict = SingleArg ? SingleArg : MultipleArg; + Arg *SecondConflict = VirtualArg ? VirtualArg : MultipleArg; + if (FirstConflict && SecondConflict && FirstConflict != SecondConflict) + D.Diag(clang::diag::err_drv_argument_not_allowed_with) + << FirstConflict->getAsString(Args) + << SecondConflict->getAsString(Args); + + if (SingleArg) + CmdArgs.push_back("-fms-memptr-rep=single"); + else if (MultipleArg) + CmdArgs.push_back("-fms-memptr-rep=multiple"); + else + CmdArgs.push_back("-fms-memptr-rep=virtual"); + } + + if (Args.getLastArg(options::OPT__SLASH_Gd)) + CmdArgs.push_back("-fdefault-calling-conv=cdecl"); + else if (Args.getLastArg(options::OPT__SLASH_Gr)) + CmdArgs.push_back("-fdefault-calling-conv=fastcall"); + else if (Args.getLastArg(options::OPT__SLASH_Gz)) + CmdArgs.push_back("-fdefault-calling-conv=stdcall"); + else if (Args.getLastArg(options::OPT__SLASH_Gv)) + CmdArgs.push_back("-fdefault-calling-conv=vectorcall"); + + if (Arg *A = Args.getLastArg(options::OPT_vtordisp_mode_EQ)) + A->render(Args, CmdArgs); + + if (!Args.hasArg(options::OPT_fdiagnostics_format_EQ)) { + CmdArgs.push_back("-fdiagnostics-format"); + if (Args.hasArg(options::OPT__SLASH_fallback)) + CmdArgs.push_back("msvc-fallback"); + else + CmdArgs.push_back("msvc"); + } +} + +visualstudio::Compiler *Clang::getCLFallback() const { + if (!CLFallback) + CLFallback.reset(new visualstudio::Compiler(getToolChain())); + return CLFallback.get(); +} + + +const char *Clang::getBaseInputName(const ArgList &Args, + const InputInfo &Input) { + return Args.MakeArgString(llvm::sys::path::filename(Input.getBaseInput())); +} + +const char *Clang::getBaseInputStem(const ArgList &Args, + const InputInfoList &Inputs) { + const char *Str = getBaseInputName(Args, Inputs[0]); + + if (const char *End = strrchr(Str, '.')) + return Args.MakeArgString(std::string(Str, End)); + + return Str; +} + +const char *Clang::getDependencyFileName(const ArgList &Args, + const InputInfoList &Inputs) { + // FIXME: Think about this more. + std::string Res; + + if (Arg *OutputOpt = Args.getLastArg(options::OPT_o)) { + std::string Str(OutputOpt->getValue()); + Res = Str.substr(0, Str.rfind('.')); + } else { + Res = getBaseInputStem(Args, Inputs); + } + return Args.MakeArgString(Res + ".d"); +} + +// Begin ClangAs + +void ClangAs::AddMIPSTargetArgs(const ArgList &Args, + ArgStringList &CmdArgs) const { + StringRef CPUName; + StringRef ABIName; + const llvm::Triple &Triple = getToolChain().getTriple(); + mips::getMipsCPUAndABI(Args, Triple, CPUName, ABIName); + + CmdArgs.push_back("-target-abi"); + CmdArgs.push_back(ABIName.data()); +} + +void ClangAs::AddX86TargetArgs(const ArgList &Args, + ArgStringList &CmdArgs) const { + if (Arg *A = Args.getLastArg(options::OPT_masm_EQ)) { + StringRef Value = A->getValue(); + if (Value == "intel" || Value == "att") { + CmdArgs.push_back("-mllvm"); + CmdArgs.push_back(Args.MakeArgString("-x86-asm-syntax=" + Value)); + } else { + getToolChain().getDriver().Diag(diag::err_drv_unsupported_option_argument) + << A->getOption().getName() << Value; + } + } +} + +void ClangAs::ConstructJob(Compilation &C, const JobAction &JA, + const InputInfo &Output, const InputInfoList &Inputs, + const ArgList &Args, + const char *LinkingOutput) const { + ArgStringList CmdArgs; + + assert(Inputs.size() == 1 && "Unexpected number of inputs."); + const InputInfo &Input = Inputs[0]; + + const llvm::Triple &Triple = getToolChain().getEffectiveTriple(); + const std::string &TripleStr = Triple.getTriple(); + + // Don't warn about "clang -w -c foo.s" + Args.ClaimAllArgs(options::OPT_w); + // and "clang -emit-llvm -c foo.s" + Args.ClaimAllArgs(options::OPT_emit_llvm); + + claimNoWarnArgs(Args); + + // Invoke ourselves in -cc1as mode. + // + // FIXME: Implement custom jobs for internal actions. + CmdArgs.push_back("-cc1as"); + + // Add the "effective" target triple. + CmdArgs.push_back("-triple"); + CmdArgs.push_back(Args.MakeArgString(TripleStr)); + + // Set the output mode, we currently only expect to be used as a real + // assembler. + CmdArgs.push_back("-filetype"); + CmdArgs.push_back("obj"); + + // Set the main file name, so that debug info works even with + // -save-temps or preprocessed assembly. + CmdArgs.push_back("-main-file-name"); + CmdArgs.push_back(Clang::getBaseInputName(Args, Input)); + + // Add the target cpu + std::string CPU = getCPUName(Args, Triple, /*FromAs*/ true); + if (!CPU.empty()) { + CmdArgs.push_back("-target-cpu"); + CmdArgs.push_back(Args.MakeArgString(CPU)); + } + + // Add the target features + getTargetFeatures(getToolChain(), Triple, Args, CmdArgs, true); + + // Ignore explicit -force_cpusubtype_ALL option. + (void)Args.hasArg(options::OPT_force__cpusubtype__ALL); + + // Pass along any -I options so we get proper .include search paths. + Args.AddAllArgs(CmdArgs, options::OPT_I_Group); + + // Determine the original source input. + const Action *SourceAction = &JA; + while (SourceAction->getKind() != Action::InputClass) { + assert(!SourceAction->getInputs().empty() && "unexpected root action!"); + SourceAction = SourceAction->getInputs()[0]; + } + + // Forward -g and handle debug info related flags, assuming we are dealing + // with an actual assembly file. + bool WantDebug = false; + unsigned DwarfVersion = 0; + Args.ClaimAllArgs(options::OPT_g_Group); + if (Arg *A = Args.getLastArg(options::OPT_g_Group)) { + WantDebug = !A->getOption().matches(options::OPT_g0) && + !A->getOption().matches(options::OPT_ggdb0); + if (WantDebug) + DwarfVersion = DwarfVersionNum(A->getSpelling()); + } + if (DwarfVersion == 0) + DwarfVersion = getToolChain().GetDefaultDwarfVersion(); + + codegenoptions::DebugInfoKind DebugInfoKind = codegenoptions::NoDebugInfo; + + if (SourceAction->getType() == types::TY_Asm || + SourceAction->getType() == types::TY_PP_Asm) { + // You might think that it would be ok to set DebugInfoKind outside of + // the guard for source type, however there is a test which asserts + // that some assembler invocation receives no -debug-info-kind, + // and it's not clear whether that test is just overly restrictive. + DebugInfoKind = (WantDebug ? codegenoptions::LimitedDebugInfo + : codegenoptions::NoDebugInfo); + // Add the -fdebug-compilation-dir flag if needed. + addDebugCompDirArg(Args, CmdArgs); + + // Set the AT_producer to the clang version when using the integrated + // assembler on assembly source files. + CmdArgs.push_back("-dwarf-debug-producer"); + CmdArgs.push_back(Args.MakeArgString(getClangFullVersion())); + + // And pass along -I options + Args.AddAllArgs(CmdArgs, options::OPT_I); + } + RenderDebugEnablingArgs(Args, CmdArgs, DebugInfoKind, DwarfVersion, + llvm::DebuggerKind::Default); + + // Handle -fPIC et al -- the relocation-model affects the assembler + // for some targets. + llvm::Reloc::Model RelocationModel; + unsigned PICLevel; + bool IsPIE; + std::tie(RelocationModel, PICLevel, IsPIE) = + ParsePICArgs(getToolChain(), Args); + + const char *RMName = RelocationModelName(RelocationModel); + if (RMName) { + CmdArgs.push_back("-mrelocation-model"); + CmdArgs.push_back(RMName); + } + + // Optionally embed the -cc1as level arguments into the debug info, for build + // analysis. + if (getToolChain().UseDwarfDebugFlags()) { + ArgStringList OriginalArgs; + for (const auto &Arg : Args) + Arg->render(Args, OriginalArgs); + + SmallString<256> Flags; + const char *Exec = getToolChain().getDriver().getClangProgramPath(); + Flags += Exec; + for (const char *OriginalArg : OriginalArgs) { + SmallString<128> EscapedArg; + EscapeSpacesAndBackslashes(OriginalArg, EscapedArg); + Flags += " "; + Flags += EscapedArg; + } + CmdArgs.push_back("-dwarf-debug-flags"); + CmdArgs.push_back(Args.MakeArgString(Flags)); + } + + // FIXME: Add -static support, once we have it. + + // Add target specific flags. + switch (getToolChain().getArch()) { + default: + break; + + case llvm::Triple::mips: + case llvm::Triple::mipsel: + case llvm::Triple::mips64: + case llvm::Triple::mips64el: + AddMIPSTargetArgs(Args, CmdArgs); + break; + + case llvm::Triple::x86: + case llvm::Triple::x86_64: + AddX86TargetArgs(Args, CmdArgs); + break; + } + + // Consume all the warning flags. Usually this would be handled more + // gracefully by -cc1 (warning about unknown warning flags, etc) but -cc1as + // doesn't handle that so rather than warning about unused flags that are + // actually used, we'll lie by omission instead. + // FIXME: Stop lying and consume only the appropriate driver flags + Args.ClaimAllArgs(options::OPT_W_Group); + + CollectArgsForIntegratedAssembler(C, Args, CmdArgs, + getToolChain().getDriver()); + + Args.AddAllArgs(CmdArgs, options::OPT_mllvm); + + assert(Output.isFilename() && "Unexpected lipo output."); + CmdArgs.push_back("-o"); + CmdArgs.push_back(Output.getFilename()); + + assert(Input.isFilename() && "Invalid input."); + CmdArgs.push_back(Input.getFilename()); + + const char *Exec = getToolChain().getDriver().getClangProgramPath(); + C.addCommand(llvm::make_unique<Command>(JA, *this, Exec, CmdArgs, Inputs)); + + // Handle the debug info splitting at object creation time if we're + // creating an object. + // TODO: Currently only works on linux with newer objcopy. + if (Args.hasArg(options::OPT_gsplit_dwarf) && + getToolChain().getTriple().isOSLinux()) + SplitDebugInfo(getToolChain(), C, *this, JA, Args, Output, + SplitDebugName(Args, Input)); +} + +// Begin OffloadBundler + +void OffloadBundler::ConstructJob(Compilation &C, const JobAction &JA, + const InputInfo &Output, + const InputInfoList &Inputs, + const llvm::opt::ArgList &TCArgs, + const char *LinkingOutput) const { + // The version with only one output is expected to refer to a bundling job. + assert(isa<OffloadBundlingJobAction>(JA) && "Expecting bundling job!"); + + // The bundling command looks like this: + // clang-offload-bundler -type=bc + // -targets=host-triple,openmp-triple1,openmp-triple2 + // -outputs=input_file + // -inputs=unbundle_file_host,unbundle_file_tgt1,unbundle_file_tgt2" + + ArgStringList CmdArgs; + + // Get the type. + CmdArgs.push_back(TCArgs.MakeArgString( + Twine("-type=") + types::getTypeTempSuffix(Output.getType()))); + + assert(JA.getInputs().size() == Inputs.size() && + "Not have inputs for all dependence actions??"); + + // Get the targets. + SmallString<128> Triples; + Triples += "-targets="; + for (unsigned I = 0; I < Inputs.size(); ++I) { + if (I) + Triples += ','; + + Action::OffloadKind CurKind = Action::OFK_Host; + const ToolChain *CurTC = &getToolChain(); + const Action *CurDep = JA.getInputs()[I]; + + if (const auto *OA = dyn_cast<OffloadAction>(CurDep)) { + OA->doOnEachDependence([&](Action *A, const ToolChain *TC, const char *) { + CurKind = A->getOffloadingDeviceKind(); + CurTC = TC; + }); + } + Triples += Action::GetOffloadKindName(CurKind); + Triples += '-'; + Triples += CurTC->getTriple().normalize(); + } + CmdArgs.push_back(TCArgs.MakeArgString(Triples)); + + // Get bundled file command. + CmdArgs.push_back( + TCArgs.MakeArgString(Twine("-outputs=") + Output.getFilename())); + + // Get unbundled files command. + SmallString<128> UB; + UB += "-inputs="; + for (unsigned I = 0; I < Inputs.size(); ++I) { + if (I) + UB += ','; + UB += Inputs[I].getFilename(); + } + CmdArgs.push_back(TCArgs.MakeArgString(UB)); + + // All the inputs are encoded as commands. + C.addCommand(llvm::make_unique<Command>( + JA, *this, + TCArgs.MakeArgString(getToolChain().GetProgramPath(getShortName())), + CmdArgs, None)); +} + +void OffloadBundler::ConstructJobMultipleOutputs( + Compilation &C, const JobAction &JA, const InputInfoList &Outputs, + const InputInfoList &Inputs, const llvm::opt::ArgList &TCArgs, + const char *LinkingOutput) const { + // The version with multiple outputs is expected to refer to a unbundling job. + auto &UA = cast<OffloadUnbundlingJobAction>(JA); + + // The unbundling command looks like this: + // clang-offload-bundler -type=bc + // -targets=host-triple,openmp-triple1,openmp-triple2 + // -inputs=input_file + // -outputs=unbundle_file_host,unbundle_file_tgt1,unbundle_file_tgt2" + // -unbundle + + ArgStringList CmdArgs; + + assert(Inputs.size() == 1 && "Expecting to unbundle a single file!"); + InputInfo Input = Inputs.front(); + + // Get the type. + CmdArgs.push_back(TCArgs.MakeArgString( + Twine("-type=") + types::getTypeTempSuffix(Input.getType()))); + + // Get the targets. + SmallString<128> Triples; + Triples += "-targets="; + auto DepInfo = UA.getDependentActionsInfo(); + for (unsigned I = 0; I < DepInfo.size(); ++I) { + if (I) + Triples += ','; + + auto &Dep = DepInfo[I]; + Triples += Action::GetOffloadKindName(Dep.DependentOffloadKind); + Triples += '-'; + Triples += Dep.DependentToolChain->getTriple().normalize(); + } + + CmdArgs.push_back(TCArgs.MakeArgString(Triples)); + + // Get bundled file command. + CmdArgs.push_back( + TCArgs.MakeArgString(Twine("-inputs=") + Input.getFilename())); + + // Get unbundled files command. + SmallString<128> UB; + UB += "-outputs="; + for (unsigned I = 0; I < Outputs.size(); ++I) { + if (I) + UB += ','; + UB += Outputs[I].getFilename(); + } + CmdArgs.push_back(TCArgs.MakeArgString(UB)); + CmdArgs.push_back("-unbundle"); + + // All the inputs are encoded as commands. + C.addCommand(llvm::make_unique<Command>( + JA, *this, + TCArgs.MakeArgString(getToolChain().GetProgramPath(getShortName())), + CmdArgs, None)); +} |