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CompilerInvocation.cpp
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CompilerInvocation.cpp
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//===--- CompilerInvocation.cpp -------------------------------------------===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
#include "clang/Frontend/CompilerInvocation.h"
#include "clang/Basic/FileManager.h"
#include "clang/Basic/Version.h"
#include "clang/Driver/DriverDiagnostic.h"
#include "clang/Driver/Options.h"
#include "clang/Driver/Util.h"
#include "clang/Frontend/FrontendDiagnostic.h"
#include "clang/Frontend/LangStandard.h"
#include "clang/Frontend/Utils.h"
#include "clang/Lex/HeaderSearchOptions.h"
#include "clang/Serialization/ASTReader.h"
#include "llvm/ADT/Hashing.h"
#include "llvm/ADT/SmallVector.h"
#include "llvm/ADT/STLExtras.h"
#include "llvm/ADT/StringExtras.h"
#include "llvm/ADT/StringSwitch.h"
#include "llvm/ADT/Triple.h"
#include "llvm/Option/Arg.h"
#include "llvm/Option/ArgList.h"
#include "llvm/Option/OptTable.h"
#include "llvm/Option/Option.h"
#include "llvm/Support/CodeGen.h"
#include "llvm/Support/ErrorHandling.h"
#include "llvm/Support/FileSystem.h"
#include "llvm/Support/Host.h"
#include "llvm/Support/Path.h"
#include "llvm/Support/Process.h"
#include <atomic>
#include <memory>
#include <sys/stat.h>
#include <system_error>
using namespace clang;
//===----------------------------------------------------------------------===//
// Initialization.
//===----------------------------------------------------------------------===//
CompilerInvocationBase::CompilerInvocationBase()
: LangOpts(new LangOptions()), TargetOpts(new TargetOptions()),
DiagnosticOpts(new DiagnosticOptions()),
HeaderSearchOpts(new HeaderSearchOptions()),
PreprocessorOpts(new PreprocessorOptions()) {}
CompilerInvocationBase::CompilerInvocationBase(const CompilerInvocationBase &X)
: RefCountedBase<CompilerInvocation>(),
LangOpts(new LangOptions(*X.getLangOpts())),
TargetOpts(new TargetOptions(X.getTargetOpts())),
DiagnosticOpts(new DiagnosticOptions(X.getDiagnosticOpts())),
HeaderSearchOpts(new HeaderSearchOptions(X.getHeaderSearchOpts())),
PreprocessorOpts(new PreprocessorOptions(X.getPreprocessorOpts())) {}
CompilerInvocationBase::~CompilerInvocationBase() {}
//===----------------------------------------------------------------------===//
// Deserialization (from args)
//===----------------------------------------------------------------------===//
using namespace clang::driver;
using namespace clang::driver::options;
using namespace llvm::opt;
//
static unsigned getOptimizationLevel(ArgList &Args, InputKind IK,
DiagnosticsEngine &Diags) {
unsigned DefaultOpt = 0;
if (IK == IK_OpenCL && !Args.hasArg(OPT_cl_opt_disable))
DefaultOpt = 2;
if (Arg *A = Args.getLastArg(options::OPT_O_Group)) {
if (A->getOption().matches(options::OPT_O0))
return 0;
if (A->getOption().matches(options::OPT_Ofast))
return 3;
assert (A->getOption().matches(options::OPT_O));
StringRef S(A->getValue());
if (S == "s" || S == "z" || S.empty())
return 2;
return getLastArgIntValue(Args, OPT_O, DefaultOpt, Diags);
}
return DefaultOpt;
}
static unsigned getOptimizationLevelSize(ArgList &Args) {
if (Arg *A = Args.getLastArg(options::OPT_O_Group)) {
if (A->getOption().matches(options::OPT_O)) {
switch (A->getValue()[0]) {
default:
return 0;
case 's':
return 1;
case 'z':
return 2;
}
}
}
return 0;
}
static void addDiagnosticArgs(ArgList &Args, OptSpecifier Group,
OptSpecifier GroupWithValue,
std::vector<std::string> &Diagnostics) {
for (Arg *A : Args.filtered(Group)) {
if (A->getOption().getKind() == Option::FlagClass) {
// The argument is a pure flag (such as OPT_Wall or OPT_Wdeprecated). Add
// its name (minus the "W" or "R" at the beginning) to the warning list.
Diagnostics.push_back(A->getOption().getName().drop_front(1));
} else if (A->getOption().matches(GroupWithValue)) {
// This is -Wfoo= or -Rfoo=, where foo is the name of the diagnostic group.
Diagnostics.push_back(A->getOption().getName().drop_front(1).rtrim("=-"));
} else {
// Otherwise, add its value (for OPT_W_Joined and similar).
for (const char *Arg : A->getValues())
Diagnostics.push_back(Arg);
}
}
}
static bool ParseAnalyzerArgs(AnalyzerOptions &Opts, ArgList &Args,
DiagnosticsEngine &Diags) {
using namespace options;
bool Success = true;
if (Arg *A = Args.getLastArg(OPT_analyzer_store)) {
StringRef Name = A->getValue();
AnalysisStores Value = llvm::StringSwitch<AnalysisStores>(Name)
#define ANALYSIS_STORE(NAME, CMDFLAG, DESC, CREATFN) \
.Case(CMDFLAG, NAME##Model)
#include "clang/StaticAnalyzer/Core/Analyses.def"
.Default(NumStores);
if (Value == NumStores) {
Diags.Report(diag::err_drv_invalid_value)
<< A->getAsString(Args) << Name;
Success = false;
} else {
Opts.AnalysisStoreOpt = Value;
}
}
if (Arg *A = Args.getLastArg(OPT_analyzer_constraints)) {
StringRef Name = A->getValue();
AnalysisConstraints Value = llvm::StringSwitch<AnalysisConstraints>(Name)
#define ANALYSIS_CONSTRAINTS(NAME, CMDFLAG, DESC, CREATFN) \
.Case(CMDFLAG, NAME##Model)
#include "clang/StaticAnalyzer/Core/Analyses.def"
.Default(NumConstraints);
if (Value == NumConstraints) {
Diags.Report(diag::err_drv_invalid_value)
<< A->getAsString(Args) << Name;
Success = false;
} else {
Opts.AnalysisConstraintsOpt = Value;
}
}
if (Arg *A = Args.getLastArg(OPT_analyzer_output)) {
StringRef Name = A->getValue();
AnalysisDiagClients Value = llvm::StringSwitch<AnalysisDiagClients>(Name)
#define ANALYSIS_DIAGNOSTICS(NAME, CMDFLAG, DESC, CREATFN) \
.Case(CMDFLAG, PD_##NAME)
#include "clang/StaticAnalyzer/Core/Analyses.def"
.Default(NUM_ANALYSIS_DIAG_CLIENTS);
if (Value == NUM_ANALYSIS_DIAG_CLIENTS) {
Diags.Report(diag::err_drv_invalid_value)
<< A->getAsString(Args) << Name;
Success = false;
} else {
Opts.AnalysisDiagOpt = Value;
}
}
if (Arg *A = Args.getLastArg(OPT_analyzer_purge)) {
StringRef Name = A->getValue();
AnalysisPurgeMode Value = llvm::StringSwitch<AnalysisPurgeMode>(Name)
#define ANALYSIS_PURGE(NAME, CMDFLAG, DESC) \
.Case(CMDFLAG, NAME)
#include "clang/StaticAnalyzer/Core/Analyses.def"
.Default(NumPurgeModes);
if (Value == NumPurgeModes) {
Diags.Report(diag::err_drv_invalid_value)
<< A->getAsString(Args) << Name;
Success = false;
} else {
Opts.AnalysisPurgeOpt = Value;
}
}
if (Arg *A = Args.getLastArg(OPT_analyzer_inlining_mode)) {
StringRef Name = A->getValue();
AnalysisInliningMode Value = llvm::StringSwitch<AnalysisInliningMode>(Name)
#define ANALYSIS_INLINING_MODE(NAME, CMDFLAG, DESC) \
.Case(CMDFLAG, NAME)
#include "clang/StaticAnalyzer/Core/Analyses.def"
.Default(NumInliningModes);
if (Value == NumInliningModes) {
Diags.Report(diag::err_drv_invalid_value)
<< A->getAsString(Args) << Name;
Success = false;
} else {
Opts.InliningMode = Value;
}
}
Opts.ShowCheckerHelp = Args.hasArg(OPT_analyzer_checker_help);
Opts.DisableAllChecks = Args.hasArg(OPT_analyzer_disable_all_checks);
Opts.visualizeExplodedGraphWithGraphViz =
Args.hasArg(OPT_analyzer_viz_egraph_graphviz);
Opts.visualizeExplodedGraphWithUbiGraph =
Args.hasArg(OPT_analyzer_viz_egraph_ubigraph);
Opts.NoRetryExhausted = Args.hasArg(OPT_analyzer_disable_retry_exhausted);
Opts.AnalyzeAll = Args.hasArg(OPT_analyzer_opt_analyze_headers);
Opts.AnalyzerDisplayProgress = Args.hasArg(OPT_analyzer_display_progress);
Opts.AnalyzeNestedBlocks =
Args.hasArg(OPT_analyzer_opt_analyze_nested_blocks);
Opts.eagerlyAssumeBinOpBifurcation = Args.hasArg(OPT_analyzer_eagerly_assume);
Opts.AnalyzeSpecificFunction = Args.getLastArgValue(OPT_analyze_function);
Opts.UnoptimizedCFG = Args.hasArg(OPT_analysis_UnoptimizedCFG);
Opts.TrimGraph = Args.hasArg(OPT_trim_egraph);
Opts.maxBlockVisitOnPath =
getLastArgIntValue(Args, OPT_analyzer_max_loop, 4, Diags);
Opts.PrintStats = Args.hasArg(OPT_analyzer_stats);
Opts.InlineMaxStackDepth =
getLastArgIntValue(Args, OPT_analyzer_inline_max_stack_depth,
Opts.InlineMaxStackDepth, Diags);
Opts.CheckersControlList.clear();
for (arg_iterator it = Args.filtered_begin(OPT_analyzer_checker,
OPT_analyzer_disable_checker),
ie = Args.filtered_end(); it != ie; ++it) {
const Arg *A = *it;
A->claim();
bool enable = (A->getOption().getID() == OPT_analyzer_checker);
// We can have a list of comma separated checker names, e.g:
// '-analyzer-checker=cocoa,unix'
StringRef checkerList = A->getValue();
SmallVector<StringRef, 4> checkers;
checkerList.split(checkers, ",");
for (unsigned i = 0, e = checkers.size(); i != e; ++i)
Opts.CheckersControlList.push_back(std::make_pair(checkers[i], enable));
}
// Go through the analyzer configuration options.
for (arg_iterator it = Args.filtered_begin(OPT_analyzer_config),
ie = Args.filtered_end(); it != ie; ++it) {
const Arg *A = *it;
A->claim();
// We can have a list of comma separated config names, e.g:
// '-analyzer-config key1=val1,key2=val2'
StringRef configList = A->getValue();
SmallVector<StringRef, 4> configVals;
configList.split(configVals, ",");
for (unsigned i = 0, e = configVals.size(); i != e; ++i) {
StringRef key, val;
std::tie(key, val) = configVals[i].split("=");
if (val.empty()) {
Diags.Report(SourceLocation(),
diag::err_analyzer_config_no_value) << configVals[i];
Success = false;
break;
}
if (val.find('=') != StringRef::npos) {
Diags.Report(SourceLocation(),
diag::err_analyzer_config_multiple_values)
<< configVals[i];
Success = false;
break;
}
Opts.Config[key] = val;
}
}
return Success;
}
static bool ParseMigratorArgs(MigratorOptions &Opts, ArgList &Args) {
Opts.NoNSAllocReallocError = Args.hasArg(OPT_migrator_no_nsalloc_error);
Opts.NoFinalizeRemoval = Args.hasArg(OPT_migrator_no_finalize_removal);
return true;
}
static void ParseCommentArgs(CommentOptions &Opts, ArgList &Args) {
Opts.BlockCommandNames = Args.getAllArgValues(OPT_fcomment_block_commands);
Opts.ParseAllComments = Args.hasArg(OPT_fparse_all_comments);
}
static StringRef getCodeModel(ArgList &Args, DiagnosticsEngine &Diags) {
if (Arg *A = Args.getLastArg(OPT_mcode_model)) {
StringRef Value = A->getValue();
if (Value == "small" || Value == "kernel" || Value == "medium" ||
Value == "large")
return Value;
Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Value;
}
return "default";
}
/// \brief Create a new Regex instance out of the string value in \p RpassArg.
/// It returns a pointer to the newly generated Regex instance.
static std::shared_ptr<llvm::Regex>
GenerateOptimizationRemarkRegex(DiagnosticsEngine &Diags, ArgList &Args,
Arg *RpassArg) {
StringRef Val = RpassArg->getValue();
std::string RegexError;
std::shared_ptr<llvm::Regex> Pattern = std::make_shared<llvm::Regex>(Val);
if (!Pattern->isValid(RegexError)) {
Diags.Report(diag::err_drv_optimization_remark_pattern)
<< RegexError << RpassArg->getAsString(Args);
Pattern.reset();
}
return Pattern;
}
static bool ParseCodeGenArgs(CodeGenOptions &Opts, ArgList &Args, InputKind IK,
DiagnosticsEngine &Diags,
const TargetOptions &TargetOpts) {
using namespace options;
bool Success = true;
Opts.OptimizationLevel = getOptimizationLevel(Args, IK, Diags);
// TODO: This could be done in Driver
unsigned MaxOptLevel = 3;
if (Opts.OptimizationLevel > MaxOptLevel) {
// If the optimization level is not supported, fall back on the default optimization
Diags.Report(diag::warn_drv_optimization_value)
<< Args.getLastArg(OPT_O)->getAsString(Args) << "-O" << MaxOptLevel;
Opts.OptimizationLevel = MaxOptLevel;
}
// We must always run at least the always inlining pass.
Opts.setInlining(
(Opts.OptimizationLevel > 1) ? CodeGenOptions::NormalInlining
: CodeGenOptions::OnlyAlwaysInlining);
// -fno-inline-functions overrides OptimizationLevel > 1.
Opts.NoInline = Args.hasArg(OPT_fno_inline);
Opts.setInlining(Args.hasArg(OPT_fno_inline_functions) ?
CodeGenOptions::OnlyAlwaysInlining : Opts.getInlining());
if (Args.hasArg(OPT_gline_tables_only)) {
Opts.setDebugInfo(CodeGenOptions::DebugLineTablesOnly);
} else if (Args.hasArg(OPT_g_Flag) || Args.hasArg(OPT_gdwarf_2) ||
Args.hasArg(OPT_gdwarf_3) || Args.hasArg(OPT_gdwarf_4)) {
bool Default = false;
// Until dtrace (via CTF) and LLDB can deal with distributed debug info,
// Darwin and FreeBSD default to standalone/full debug info.
if (llvm::Triple(TargetOpts.Triple).isOSDarwin() ||
llvm::Triple(TargetOpts.Triple).isOSFreeBSD())
Default = true;
if (Args.hasFlag(OPT_fstandalone_debug, OPT_fno_standalone_debug, Default))
Opts.setDebugInfo(CodeGenOptions::FullDebugInfo);
else
Opts.setDebugInfo(CodeGenOptions::LimitedDebugInfo);
}
Opts.DebugColumnInfo = Args.hasArg(OPT_dwarf_column_info);
Opts.SplitDwarfFile = Args.getLastArgValue(OPT_split_dwarf_file);
if (Args.hasArg(OPT_gdwarf_2))
Opts.DwarfVersion = 2;
else if (Args.hasArg(OPT_gdwarf_3))
Opts.DwarfVersion = 3;
else if (Args.hasArg(OPT_gdwarf_4))
Opts.DwarfVersion = 4;
else if (Opts.getDebugInfo() != CodeGenOptions::NoDebugInfo)
// Default Dwarf version is 4 if we are generating debug information.
Opts.DwarfVersion = 4;
Opts.DisableLLVMOpts = Args.hasArg(OPT_disable_llvm_optzns);
Opts.DisableRedZone = Args.hasArg(OPT_disable_red_zone);
Opts.ForbidGuardVariables = Args.hasArg(OPT_fforbid_guard_variables);
Opts.UseRegisterSizedBitfieldAccess = Args.hasArg(
OPT_fuse_register_sized_bitfield_access);
Opts.RelaxedAliasing = Args.hasArg(OPT_relaxed_aliasing);
Opts.StructPathTBAA = !Args.hasArg(OPT_no_struct_path_tbaa);
Opts.DwarfDebugFlags = Args.getLastArgValue(OPT_dwarf_debug_flags);
Opts.MergeAllConstants = !Args.hasArg(OPT_fno_merge_all_constants);
Opts.NoCommon = Args.hasArg(OPT_fno_common);
Opts.NoImplicitFloat = Args.hasArg(OPT_no_implicit_float);
Opts.OptimizeSize = getOptimizationLevelSize(Args);
Opts.SimplifyLibCalls = !(Args.hasArg(OPT_fno_builtin) ||
Args.hasArg(OPT_ffreestanding));
Opts.UnrollLoops =
Args.hasFlag(OPT_funroll_loops, OPT_fno_unroll_loops,
(Opts.OptimizationLevel > 1 && !Opts.OptimizeSize));
Opts.RerollLoops = Args.hasArg(OPT_freroll_loops);
Opts.DisableIntegratedAS = Args.hasArg(OPT_fno_integrated_as);
Opts.Autolink = !Args.hasArg(OPT_fno_autolink);
Opts.SampleProfileFile = Args.getLastArgValue(OPT_fprofile_sample_use_EQ);
Opts.ProfileInstrGenerate = Args.hasArg(OPT_fprofile_instr_generate);
Opts.InstrProfileInput = Args.getLastArgValue(OPT_fprofile_instr_use_EQ);
Opts.CoverageMapping = Args.hasArg(OPT_fcoverage_mapping);
Opts.DumpCoverageMapping = Args.hasArg(OPT_dump_coverage_mapping);
Opts.AsmVerbose = Args.hasArg(OPT_masm_verbose);
Opts.ObjCAutoRefCountExceptions = Args.hasArg(OPT_fobjc_arc_exceptions);
Opts.CUDAIsDevice = Args.hasArg(OPT_fcuda_is_device);
Opts.CXAAtExit = !Args.hasArg(OPT_fno_use_cxa_atexit);
Opts.CXXCtorDtorAliases = Args.hasArg(OPT_mconstructor_aliases);
Opts.CodeModel = getCodeModel(Args, Diags);
Opts.DebugPass = Args.getLastArgValue(OPT_mdebug_pass);
Opts.DisableFPElim = Args.hasArg(OPT_mdisable_fp_elim);
Opts.DisableFree = Args.hasArg(OPT_disable_free);
Opts.DisableTailCalls = Args.hasArg(OPT_mdisable_tail_calls);
Opts.FloatABI = Args.getLastArgValue(OPT_mfloat_abi);
Opts.LessPreciseFPMAD = Args.hasArg(OPT_cl_mad_enable);
Opts.LimitFloatPrecision = Args.getLastArgValue(OPT_mlimit_float_precision);
Opts.NoInfsFPMath = (Args.hasArg(OPT_menable_no_infinities) ||
Args.hasArg(OPT_cl_finite_math_only)||
Args.hasArg(OPT_cl_fast_relaxed_math));
Opts.NoNaNsFPMath = (Args.hasArg(OPT_menable_no_nans) ||
Args.hasArg(OPT_cl_finite_math_only)||
Args.hasArg(OPT_cl_fast_relaxed_math));
Opts.NoZeroInitializedInBSS = Args.hasArg(OPT_mno_zero_initialized_in_bss);
Opts.BackendOptions = Args.getAllArgValues(OPT_backend_option);
Opts.NumRegisterParameters = getLastArgIntValue(Args, OPT_mregparm, 0, Diags);
Opts.NoGlobalMerge = Args.hasArg(OPT_mno_global_merge);
Opts.NoExecStack = Args.hasArg(OPT_mno_exec_stack);
Opts.FatalWarnings = Args.hasArg(OPT_massembler_fatal_warnings);
Opts.EnableSegmentedStacks = Args.hasArg(OPT_split_stacks);
Opts.RelaxAll = Args.hasArg(OPT_mrelax_all);
Opts.OmitLeafFramePointer = Args.hasArg(OPT_momit_leaf_frame_pointer);
Opts.SaveTempLabels = Args.hasArg(OPT_msave_temp_labels);
Opts.NoDwarfDirectoryAsm = Args.hasArg(OPT_fno_dwarf_directory_asm);
Opts.SoftFloat = Args.hasArg(OPT_msoft_float);
Opts.StrictEnums = Args.hasArg(OPT_fstrict_enums);
Opts.UnsafeFPMath = Args.hasArg(OPT_menable_unsafe_fp_math) ||
Args.hasArg(OPT_cl_unsafe_math_optimizations) ||
Args.hasArg(OPT_cl_fast_relaxed_math);
Opts.UnwindTables = Args.hasArg(OPT_munwind_tables);
Opts.RelocationModel = Args.getLastArgValue(OPT_mrelocation_model, "pic");
Opts.TrapFuncName = Args.getLastArgValue(OPT_ftrap_function_EQ);
Opts.UseInitArray = Args.hasArg(OPT_fuse_init_array);
Opts.FunctionSections = Args.hasFlag(OPT_ffunction_sections,
OPT_fno_function_sections, false);
Opts.DataSections = Args.hasFlag(OPT_fdata_sections,
OPT_fno_data_sections, false);
Opts.VectorizeBB = Args.hasArg(OPT_vectorize_slp_aggressive);
Opts.VectorizeLoop = Args.hasArg(OPT_vectorize_loops);
Opts.VectorizeSLP = Args.hasArg(OPT_vectorize_slp);
Opts.MainFileName = Args.getLastArgValue(OPT_main_file_name);
Opts.VerifyModule = !Args.hasArg(OPT_disable_llvm_verifier);
Opts.SanitizeRecover = !Args.hasArg(OPT_fno_sanitize_recover);
Opts.DisableGCov = Args.hasArg(OPT_test_coverage);
Opts.EmitGcovArcs = Args.hasArg(OPT_femit_coverage_data);
Opts.EmitGcovNotes = Args.hasArg(OPT_femit_coverage_notes);
if (Opts.EmitGcovArcs || Opts.EmitGcovNotes) {
Opts.CoverageFile = Args.getLastArgValue(OPT_coverage_file);
Opts.CoverageExtraChecksum = Args.hasArg(OPT_coverage_cfg_checksum);
Opts.CoverageNoFunctionNamesInData =
Args.hasArg(OPT_coverage_no_function_names_in_data);
if (Args.hasArg(OPT_coverage_version_EQ)) {
StringRef CoverageVersion = Args.getLastArgValue(OPT_coverage_version_EQ);
if (CoverageVersion.size() != 4) {
Diags.Report(diag::err_drv_invalid_value)
<< Args.getLastArg(OPT_coverage_version_EQ)->getAsString(Args)
<< CoverageVersion;
} else {
memcpy(Opts.CoverageVersion, CoverageVersion.data(), 4);
}
}
}
Opts.InstrumentFunctions = Args.hasArg(OPT_finstrument_functions);
Opts.InstrumentForProfiling = Args.hasArg(OPT_pg);
Opts.EmitOpenCLArgMetadata = Args.hasArg(OPT_cl_kernel_arg_info);
Opts.CompressDebugSections = Args.hasArg(OPT_compress_debug_sections);
Opts.DebugCompilationDir = Args.getLastArgValue(OPT_fdebug_compilation_dir);
Opts.LinkBitcodeFile = Args.getLastArgValue(OPT_mlink_bitcode_file);
Opts.SanitizerBlacklistFile = Args.getLastArgValue(OPT_fsanitize_blacklist);
Opts.SanitizeMemoryTrackOrigins =
getLastArgIntValue(Args, OPT_fsanitize_memory_track_origins_EQ, 0, Diags);
Opts.SanitizeUndefinedTrapOnError =
Args.hasArg(OPT_fsanitize_undefined_trap_on_error);
Opts.SSPBufferSize =
getLastArgIntValue(Args, OPT_stack_protector_buffer_size, 8, Diags);
Opts.StackRealignment = Args.hasArg(OPT_mstackrealign);
if (Arg *A = Args.getLastArg(OPT_mstack_alignment)) {
StringRef Val = A->getValue();
unsigned StackAlignment = Opts.StackAlignment;
Val.getAsInteger(10, StackAlignment);
Opts.StackAlignment = StackAlignment;
}
if (Arg *A = Args.getLastArg(OPT_fobjc_dispatch_method_EQ)) {
StringRef Name = A->getValue();
unsigned Method = llvm::StringSwitch<unsigned>(Name)
.Case("legacy", CodeGenOptions::Legacy)
.Case("non-legacy", CodeGenOptions::NonLegacy)
.Case("mixed", CodeGenOptions::Mixed)
.Default(~0U);
if (Method == ~0U) {
Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Name;
Success = false;
} else {
Opts.setObjCDispatchMethod(
static_cast<CodeGenOptions::ObjCDispatchMethodKind>(Method));
}
}
if (Arg *A = Args.getLastArg(OPT_ftlsmodel_EQ)) {
StringRef Name = A->getValue();
unsigned Model = llvm::StringSwitch<unsigned>(Name)
.Case("global-dynamic", CodeGenOptions::GeneralDynamicTLSModel)
.Case("local-dynamic", CodeGenOptions::LocalDynamicTLSModel)
.Case("initial-exec", CodeGenOptions::InitialExecTLSModel)
.Case("local-exec", CodeGenOptions::LocalExecTLSModel)
.Default(~0U);
if (Model == ~0U) {
Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Name;
Success = false;
} else {
Opts.setDefaultTLSModel(static_cast<CodeGenOptions::TLSModel>(Model));
}
}
if (Arg *A = Args.getLastArg(OPT_ffp_contract)) {
StringRef Val = A->getValue();
if (Val == "fast")
Opts.setFPContractMode(CodeGenOptions::FPC_Fast);
else if (Val == "on")
Opts.setFPContractMode(CodeGenOptions::FPC_On);
else if (Val == "off")
Opts.setFPContractMode(CodeGenOptions::FPC_Off);
else
Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Val;
}
if (Arg *A = Args.getLastArg(OPT_fpcc_struct_return, OPT_freg_struct_return)) {
if (A->getOption().matches(OPT_fpcc_struct_return)) {
Opts.setStructReturnConvention(CodeGenOptions::SRCK_OnStack);
} else {
assert(A->getOption().matches(OPT_freg_struct_return));
Opts.setStructReturnConvention(CodeGenOptions::SRCK_InRegs);
}
}
Opts.DependentLibraries = Args.getAllArgValues(OPT_dependent_lib);
bool NeedLocTracking = false;
if (Arg *A = Args.getLastArg(OPT_Rpass_EQ)) {
Opts.OptimizationRemarkPattern =
GenerateOptimizationRemarkRegex(Diags, Args, A);
NeedLocTracking = true;
}
if (Arg *A = Args.getLastArg(OPT_Rpass_missed_EQ)) {
Opts.OptimizationRemarkMissedPattern =
GenerateOptimizationRemarkRegex(Diags, Args, A);
NeedLocTracking = true;
}
if (Arg *A = Args.getLastArg(OPT_Rpass_analysis_EQ)) {
Opts.OptimizationRemarkAnalysisPattern =
GenerateOptimizationRemarkRegex(Diags, Args, A);
NeedLocTracking = true;
}
// If the user requested one of the flags in the -Rpass family, make sure
// that the backend tracks source location information.
if (NeedLocTracking && Opts.getDebugInfo() == CodeGenOptions::NoDebugInfo)
Opts.setDebugInfo(CodeGenOptions::LocTrackingOnly);
return Success;
}
static void ParseDependencyOutputArgs(DependencyOutputOptions &Opts,
ArgList &Args) {
using namespace options;
Opts.OutputFile = Args.getLastArgValue(OPT_dependency_file);
Opts.Targets = Args.getAllArgValues(OPT_MT);
Opts.IncludeSystemHeaders = Args.hasArg(OPT_sys_header_deps);
Opts.IncludeModuleFiles = Args.hasArg(OPT_module_file_deps);
Opts.UsePhonyTargets = Args.hasArg(OPT_MP);
Opts.ShowHeaderIncludes = Args.hasArg(OPT_H);
Opts.HeaderIncludeOutputFile = Args.getLastArgValue(OPT_header_include_file);
Opts.AddMissingHeaderDeps = Args.hasArg(OPT_MG);
Opts.PrintShowIncludes = Args.hasArg(OPT_show_includes);
Opts.DOTOutputFile = Args.getLastArgValue(OPT_dependency_dot);
Opts.ModuleDependencyOutputDir =
Args.getLastArgValue(OPT_module_dependency_dir);
}
bool clang::ParseDiagnosticArgs(DiagnosticOptions &Opts, ArgList &Args,
DiagnosticsEngine *Diags) {
using namespace options;
bool Success = true;
Opts.DiagnosticLogFile = Args.getLastArgValue(OPT_diagnostic_log_file);
Opts.DiagnosticSerializationFile =
Args.getLastArgValue(OPT_diagnostic_serialized_file);
Opts.IgnoreWarnings = Args.hasArg(OPT_w);
Opts.NoRewriteMacros = Args.hasArg(OPT_Wno_rewrite_macros);
Opts.Pedantic = Args.hasArg(OPT_pedantic);
Opts.PedanticErrors = Args.hasArg(OPT_pedantic_errors);
Opts.ShowCarets = !Args.hasArg(OPT_fno_caret_diagnostics);
Opts.ShowColors = Args.hasArg(OPT_fcolor_diagnostics);
Opts.ShowColumn = Args.hasFlag(OPT_fshow_column,
OPT_fno_show_column,
/*Default=*/true);
Opts.ShowFixits = !Args.hasArg(OPT_fno_diagnostics_fixit_info);
Opts.ShowLocation = !Args.hasArg(OPT_fno_show_source_location);
Opts.ShowOptionNames = Args.hasArg(OPT_fdiagnostics_show_option);
llvm::sys::Process::UseANSIEscapeCodes(Args.hasArg(OPT_fansi_escape_codes));
// Default behavior is to not to show note include stacks.
Opts.ShowNoteIncludeStack = false;
if (Arg *A = Args.getLastArg(OPT_fdiagnostics_show_note_include_stack,
OPT_fno_diagnostics_show_note_include_stack))
if (A->getOption().matches(OPT_fdiagnostics_show_note_include_stack))
Opts.ShowNoteIncludeStack = true;
StringRef ShowOverloads =
Args.getLastArgValue(OPT_fshow_overloads_EQ, "all");
if (ShowOverloads == "best")
Opts.setShowOverloads(Ovl_Best);
else if (ShowOverloads == "all")
Opts.setShowOverloads(Ovl_All);
else {
Success = false;
if (Diags)
Diags->Report(diag::err_drv_invalid_value)
<< Args.getLastArg(OPT_fshow_overloads_EQ)->getAsString(Args)
<< ShowOverloads;
}
StringRef ShowCategory =
Args.getLastArgValue(OPT_fdiagnostics_show_category, "none");
if (ShowCategory == "none")
Opts.ShowCategories = 0;
else if (ShowCategory == "id")
Opts.ShowCategories = 1;
else if (ShowCategory == "name")
Opts.ShowCategories = 2;
else {
Success = false;
if (Diags)
Diags->Report(diag::err_drv_invalid_value)
<< Args.getLastArg(OPT_fdiagnostics_show_category)->getAsString(Args)
<< ShowCategory;
}
StringRef Format =
Args.getLastArgValue(OPT_fdiagnostics_format, "clang");
if (Format == "clang")
Opts.setFormat(DiagnosticOptions::Clang);
else if (Format == "msvc")
Opts.setFormat(DiagnosticOptions::Msvc);
else if (Format == "msvc-fallback") {
Opts.setFormat(DiagnosticOptions::Msvc);
Opts.CLFallbackMode = true;
} else if (Format == "vi")
Opts.setFormat(DiagnosticOptions::Vi);
else {
Success = false;
if (Diags)
Diags->Report(diag::err_drv_invalid_value)
<< Args.getLastArg(OPT_fdiagnostics_format)->getAsString(Args)
<< Format;
}
Opts.ShowSourceRanges = Args.hasArg(OPT_fdiagnostics_print_source_range_info);
Opts.ShowParseableFixits = Args.hasArg(OPT_fdiagnostics_parseable_fixits);
Opts.ShowPresumedLoc = !Args.hasArg(OPT_fno_diagnostics_use_presumed_location);
Opts.VerifyDiagnostics = Args.hasArg(OPT_verify);
Opts.ElideType = !Args.hasArg(OPT_fno_elide_type);
Opts.ShowTemplateTree = Args.hasArg(OPT_fdiagnostics_show_template_tree);
Opts.ErrorLimit = getLastArgIntValue(Args, OPT_ferror_limit, 0, Diags);
Opts.MacroBacktraceLimit =
getLastArgIntValue(Args, OPT_fmacro_backtrace_limit,
DiagnosticOptions::DefaultMacroBacktraceLimit, Diags);
Opts.TemplateBacktraceLimit = getLastArgIntValue(
Args, OPT_ftemplate_backtrace_limit,
DiagnosticOptions::DefaultTemplateBacktraceLimit, Diags);
Opts.ConstexprBacktraceLimit = getLastArgIntValue(
Args, OPT_fconstexpr_backtrace_limit,
DiagnosticOptions::DefaultConstexprBacktraceLimit, Diags);
Opts.TabStop = getLastArgIntValue(Args, OPT_ftabstop,
DiagnosticOptions::DefaultTabStop, Diags);
if (Opts.TabStop == 0 || Opts.TabStop > DiagnosticOptions::MaxTabStop) {
Opts.TabStop = DiagnosticOptions::DefaultTabStop;
if (Diags)
Diags->Report(diag::warn_ignoring_ftabstop_value)
<< Opts.TabStop << DiagnosticOptions::DefaultTabStop;
}
Opts.MessageLength = getLastArgIntValue(Args, OPT_fmessage_length, 0, Diags);
addDiagnosticArgs(Args, OPT_W_Group, OPT_W_value_Group, Opts.Warnings);
addDiagnosticArgs(Args, OPT_R_Group, OPT_R_value_Group, Opts.Remarks);
return Success;
}
static void ParseFileSystemArgs(FileSystemOptions &Opts, ArgList &Args) {
Opts.WorkingDir = Args.getLastArgValue(OPT_working_directory);
}
static InputKind ParseFrontendArgs(FrontendOptions &Opts, ArgList &Args,
DiagnosticsEngine &Diags) {
using namespace options;
Opts.ProgramAction = frontend::ParseSyntaxOnly;
if (const Arg *A = Args.getLastArg(OPT_Action_Group)) {
switch (A->getOption().getID()) {
default:
llvm_unreachable("Invalid option in group!");
case OPT_ast_list:
Opts.ProgramAction = frontend::ASTDeclList; break;
case OPT_ast_dump:
case OPT_ast_dump_lookups:
Opts.ProgramAction = frontend::ASTDump; break;
case OPT_ast_print:
Opts.ProgramAction = frontend::ASTPrint; break;
case OPT_ast_view:
Opts.ProgramAction = frontend::ASTView; break;
case OPT_dump_raw_tokens:
Opts.ProgramAction = frontend::DumpRawTokens; break;
case OPT_dump_tokens:
Opts.ProgramAction = frontend::DumpTokens; break;
case OPT_S:
Opts.ProgramAction = frontend::EmitAssembly; break;
case OPT_emit_llvm_bc:
Opts.ProgramAction = frontend::EmitBC; break;
case OPT_emit_html:
Opts.ProgramAction = frontend::EmitHTML; break;
case OPT_emit_llvm:
Opts.ProgramAction = frontend::EmitLLVM; break;
case OPT_emit_llvm_only:
Opts.ProgramAction = frontend::EmitLLVMOnly; break;
case OPT_emit_codegen_only:
Opts.ProgramAction = frontend::EmitCodeGenOnly; break;
case OPT_emit_obj:
Opts.ProgramAction = frontend::EmitObj; break;
case OPT_fixit_EQ:
Opts.FixItSuffix = A->getValue();
// fall-through!
case OPT_fixit:
Opts.ProgramAction = frontend::FixIt; break;
case OPT_emit_module:
Opts.ProgramAction = frontend::GenerateModule; break;
case OPT_emit_pch:
Opts.ProgramAction = frontend::GeneratePCH; break;
case OPT_emit_pth:
Opts.ProgramAction = frontend::GeneratePTH; break;
case OPT_init_only:
Opts.ProgramAction = frontend::InitOnly; break;
case OPT_fsyntax_only:
Opts.ProgramAction = frontend::ParseSyntaxOnly; break;
case OPT_module_file_info:
Opts.ProgramAction = frontend::ModuleFileInfo; break;
case OPT_verify_pch:
Opts.ProgramAction = frontend::VerifyPCH; break;
case OPT_print_decl_contexts:
Opts.ProgramAction = frontend::PrintDeclContext; break;
case OPT_print_preamble:
Opts.ProgramAction = frontend::PrintPreamble; break;
case OPT_E:
Opts.ProgramAction = frontend::PrintPreprocessedInput; break;
case OPT_rewrite_macros:
Opts.ProgramAction = frontend::RewriteMacros; break;
case OPT_rewrite_objc:
Opts.ProgramAction = frontend::RewriteObjC; break;
case OPT_rewrite_test:
Opts.ProgramAction = frontend::RewriteTest; break;
case OPT_analyze:
Opts.ProgramAction = frontend::RunAnalysis; break;
case OPT_migrate:
Opts.ProgramAction = frontend::MigrateSource; break;
case OPT_Eonly:
Opts.ProgramAction = frontend::RunPreprocessorOnly; break;
}
}
if (const Arg* A = Args.getLastArg(OPT_plugin)) {
Opts.Plugins.push_back(A->getValue(0));
Opts.ProgramAction = frontend::PluginAction;
Opts.ActionName = A->getValue();
for (arg_iterator it = Args.filtered_begin(OPT_plugin_arg),
end = Args.filtered_end(); it != end; ++it) {
if ((*it)->getValue(0) == Opts.ActionName)
Opts.PluginArgs.push_back((*it)->getValue(1));
}
}
Opts.AddPluginActions = Args.getAllArgValues(OPT_add_plugin);
Opts.AddPluginArgs.resize(Opts.AddPluginActions.size());
for (int i = 0, e = Opts.AddPluginActions.size(); i != e; ++i) {
for (arg_iterator it = Args.filtered_begin(OPT_plugin_arg),
end = Args.filtered_end(); it != end; ++it) {
if ((*it)->getValue(0) == Opts.AddPluginActions[i])
Opts.AddPluginArgs[i].push_back((*it)->getValue(1));
}
}
if (const Arg *A = Args.getLastArg(OPT_code_completion_at)) {
Opts.CodeCompletionAt =
ParsedSourceLocation::FromString(A->getValue());
if (Opts.CodeCompletionAt.FileName.empty())
Diags.Report(diag::err_drv_invalid_value)
<< A->getAsString(Args) << A->getValue();
}
Opts.DisableFree = Args.hasArg(OPT_disable_free);
Opts.OutputFile = Args.getLastArgValue(OPT_o);
Opts.Plugins = Args.getAllArgValues(OPT_load);
Opts.RelocatablePCH = Args.hasArg(OPT_relocatable_pch);
Opts.ShowHelp = Args.hasArg(OPT_help);
Opts.ShowStats = Args.hasArg(OPT_print_stats);
Opts.ShowTimers = Args.hasArg(OPT_ftime_report);
Opts.ShowVersion = Args.hasArg(OPT_version);
Opts.ASTMergeFiles = Args.getAllArgValues(OPT_ast_merge);
Opts.LLVMArgs = Args.getAllArgValues(OPT_mllvm);
Opts.FixWhatYouCan = Args.hasArg(OPT_fix_what_you_can);
Opts.FixOnlyWarnings = Args.hasArg(OPT_fix_only_warnings);
Opts.FixAndRecompile = Args.hasArg(OPT_fixit_recompile);
Opts.FixToTemporaries = Args.hasArg(OPT_fixit_to_temp);
Opts.ASTDumpDecls = Args.hasArg(OPT_ast_dump);
Opts.ASTDumpFilter = Args.getLastArgValue(OPT_ast_dump_filter);
Opts.ASTDumpLookups = Args.hasArg(OPT_ast_dump_lookups);
Opts.UseGlobalModuleIndex = !Args.hasArg(OPT_fno_modules_global_index);
Opts.GenerateGlobalModuleIndex = Opts.UseGlobalModuleIndex;
Opts.CodeCompleteOpts.IncludeMacros
= Args.hasArg(OPT_code_completion_macros);
Opts.CodeCompleteOpts.IncludeCodePatterns
= Args.hasArg(OPT_code_completion_patterns);
Opts.CodeCompleteOpts.IncludeGlobals
= !Args.hasArg(OPT_no_code_completion_globals);
Opts.CodeCompleteOpts.IncludeBriefComments
= Args.hasArg(OPT_code_completion_brief_comments);
Opts.OverrideRecordLayoutsFile
= Args.getLastArgValue(OPT_foverride_record_layout_EQ);
if (const Arg *A = Args.getLastArg(OPT_arcmt_check,
OPT_arcmt_modify,
OPT_arcmt_migrate)) {
switch (A->getOption().getID()) {
default:
llvm_unreachable("missed a case");
case OPT_arcmt_check:
Opts.ARCMTAction = FrontendOptions::ARCMT_Check;
break;
case OPT_arcmt_modify:
Opts.ARCMTAction = FrontendOptions::ARCMT_Modify;
break;
case OPT_arcmt_migrate:
Opts.ARCMTAction = FrontendOptions::ARCMT_Migrate;
break;
}
}
Opts.MTMigrateDir = Args.getLastArgValue(OPT_mt_migrate_directory);
Opts.ARCMTMigrateReportOut
= Args.getLastArgValue(OPT_arcmt_migrate_report_output);
Opts.ARCMTMigrateEmitARCErrors
= Args.hasArg(OPT_arcmt_migrate_emit_arc_errors);
if (Args.hasArg(OPT_objcmt_migrate_literals))
Opts.ObjCMTAction |= FrontendOptions::ObjCMT_Literals;
if (Args.hasArg(OPT_objcmt_migrate_subscripting))
Opts.ObjCMTAction |= FrontendOptions::ObjCMT_Subscripting;
if (Args.hasArg(OPT_objcmt_migrate_property))
Opts.ObjCMTAction |= FrontendOptions::ObjCMT_Property;
if (Args.hasArg(OPT_objcmt_migrate_readonly_property))
Opts.ObjCMTAction |= FrontendOptions::ObjCMT_ReadonlyProperty;
if (Args.hasArg(OPT_objcmt_migrate_readwrite_property))
Opts.ObjCMTAction |= FrontendOptions::ObjCMT_ReadwriteProperty;
if (Args.hasArg(OPT_objcmt_migrate_annotation))
Opts.ObjCMTAction |= FrontendOptions::ObjCMT_Annotation;
if (Args.hasArg(OPT_objcmt_returns_innerpointer_property))
Opts.ObjCMTAction |= FrontendOptions::ObjCMT_ReturnsInnerPointerProperty;
if (Args.hasArg(OPT_objcmt_migrate_instancetype))
Opts.ObjCMTAction |= FrontendOptions::ObjCMT_Instancetype;
if (Args.hasArg(OPT_objcmt_migrate_nsmacros))
Opts.ObjCMTAction |= FrontendOptions::ObjCMT_NsMacros;
if (Args.hasArg(OPT_objcmt_migrate_protocol_conformance))
Opts.ObjCMTAction |= FrontendOptions::ObjCMT_ProtocolConformance;
if (Args.hasArg(OPT_objcmt_atomic_property))
Opts.ObjCMTAction |= FrontendOptions::ObjCMT_AtomicProperty;
if (Args.hasArg(OPT_objcmt_ns_nonatomic_iosonly))
Opts.ObjCMTAction |= FrontendOptions::ObjCMT_NsAtomicIOSOnlyProperty;
if (Args.hasArg(OPT_objcmt_migrate_designated_init))
Opts.ObjCMTAction |= FrontendOptions::ObjCMT_DesignatedInitializer;
if (Args.hasArg(OPT_objcmt_migrate_all))
Opts.ObjCMTAction |= FrontendOptions::ObjCMT_MigrateDecls;
Opts.ObjCMTWhiteListPath = Args.getLastArgValue(OPT_objcmt_whitelist_dir_path);
if (Opts.ARCMTAction != FrontendOptions::ARCMT_None &&
Opts.ObjCMTAction != FrontendOptions::ObjCMT_None) {
Diags.Report(diag::err_drv_argument_not_allowed_with)
<< "ARC migration" << "ObjC migration";
}
InputKind DashX = IK_None;
if (const Arg *A = Args.getLastArg(OPT_x)) {
DashX = llvm::StringSwitch<InputKind>(A->getValue())
.Case("c", IK_C)
.Case("cl", IK_OpenCL)
.Case("cuda", IK_CUDA)
.Case("c++", IK_CXX)
.Case("objective-c", IK_ObjC)
.Case("objective-c++", IK_ObjCXX)
.Case("cpp-output", IK_PreprocessedC)
.Case("assembler-with-cpp", IK_Asm)
.Case("c++-cpp-output", IK_PreprocessedCXX)
.Case("objective-c-cpp-output", IK_PreprocessedObjC)
.Case("objc-cpp-output", IK_PreprocessedObjC)
.Case("objective-c++-cpp-output", IK_PreprocessedObjCXX)
.Case("objc++-cpp-output", IK_PreprocessedObjCXX)
.Case("c-header", IK_C)
.Case("cl-header", IK_OpenCL)
.Case("objective-c-header", IK_ObjC)
.Case("c++-header", IK_CXX)
.Case("objective-c++-header", IK_ObjCXX)
.Cases("ast", "pcm", IK_AST)
.Case("ir", IK_LLVM_IR)
.Default(IK_None);
if (DashX == IK_None)
Diags.Report(diag::err_drv_invalid_value)
<< A->getAsString(Args) << A->getValue();
}
// '-' is the default input if none is given.
std::vector<std::string> Inputs = Args.getAllArgValues(OPT_INPUT);
Opts.Inputs.clear();
if (Inputs.empty())
Inputs.push_back("-");
for (unsigned i = 0, e = Inputs.size(); i != e; ++i) {
InputKind IK = DashX;
if (IK == IK_None) {
IK = FrontendOptions::getInputKindForExtension(
StringRef(Inputs[i]).rsplit('.').second);
// FIXME: Remove this hack.
if (i == 0)
DashX = IK;
}
Opts.Inputs.push_back(FrontendInputFile(Inputs[i], IK));
}
return DashX;
}
std::string CompilerInvocation::GetResourcesPath(const char *Argv0,
void *MainAddr) {
SmallString<128> P(llvm::sys::fs::getMainExecutable(Argv0, MainAddr));
if (!P.empty()) {
llvm::sys::path::remove_filename(P); // Remove /clang from foo/bin/clang
llvm::sys::path::remove_filename(P); // Remove /bin from foo/bin
// Get foo/lib/clang/<version>/include
llvm::sys::path::append(P, "lib", "clang", CLANG_VERSION_STRING);
}
return P.str();
}
static void ParseHeaderSearchArgs(HeaderSearchOptions &Opts, ArgList &Args) {
using namespace options;
Opts.Sysroot = Args.getLastArgValue(OPT_isysroot, "/");
Opts.Verbose = Args.hasArg(OPT_v);
Opts.UseBuiltinIncludes = !Args.hasArg(OPT_nobuiltininc);
Opts.UseStandardSystemIncludes = !Args.hasArg(OPT_nostdsysteminc);
Opts.UseStandardCXXIncludes = !Args.hasArg(OPT_nostdincxx);
if (const Arg *A = Args.getLastArg(OPT_stdlib_EQ))
Opts.UseLibcxx = (strcmp(A->getValue(), "libc++") == 0);
Opts.ResourceDir = Args.getLastArgValue(OPT_resource_dir);
Opts.ModuleCachePath = Args.getLastArgValue(OPT_fmodules_cache_path);
Opts.ModuleUserBuildPath = Args.getLastArgValue(OPT_fmodules_user_build_path);
Opts.DisableModuleHash = Args.hasArg(OPT_fdisable_module_hash);
// -fmodules implies -fmodule-maps
Opts.ModuleMaps = Args.hasArg(OPT_fmodule_maps) || Args.hasArg(OPT_fmodules);
Opts.ModuleCachePruneInterval =
getLastArgIntValue(Args, OPT_fmodules_prune_interval, 7 * 24 * 60 * 60);
Opts.ModuleCachePruneAfter =
getLastArgIntValue(Args, OPT_fmodules_prune_after, 31 * 24 * 60 * 60);
Opts.ModulesValidateOncePerBuildSession =
Args.hasArg(OPT_fmodules_validate_once_per_build_session);
Opts.BuildSessionTimestamp =
getLastArgUInt64Value(Args, OPT_fbuild_session_timestamp, 0);
Opts.ModulesValidateSystemHeaders =
Args.hasArg(OPT_fmodules_validate_system_headers);
for (arg_iterator it = Args.filtered_begin(OPT_fmodules_ignore_macro),
ie = Args.filtered_end();