//===--- 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/Config/config.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/STLExtras.h"
#include "llvm/ADT/SmallVector.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 void parseSanitizerKinds(StringRef FlagName,
const std::vector<std::string> &Sanitizers,
DiagnosticsEngine &Diags, SanitizerSet &S) {
for (const auto &Sanitizer : Sanitizers) {
SanitizerKind K = llvm::StringSwitch<SanitizerKind>(Sanitizer)
#define SANITIZER(NAME, ID) .Case(NAME, SanitizerKind::ID)
#include "clang/Basic/Sanitizers.def"
.Default(SanitizerKind::Unknown);
if (K == SanitizerKind::Unknown)
Diags.Report(diag::err_drv_invalid_value) << FlagName << Sanitizer;
else
S.set(K, true);
}
}
static bool ParseCodeGenArgs(CodeGenOptions &Opts, ArgList &Args, InputKind IK,
DiagnosticsEngine &Diags,
const TargetOptions &TargetOpts) {
using namespace options;
bool Success = true;
unsigned OptimizationLevel = getOptimizationLevel(Args, IK, Diags);
// TODO: This could be done in Driver
unsigned MaxOptLevel = 3;
if (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;
OptimizationLevel = MaxOptLevel;
}
Opts.OptimizationLevel = OptimizationLevel;
// 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 (Arg *A = Args.getLastArg(OPT_fveclib)) {
StringRef Name = A->getValue();
if (Name == "Accelerate")
Opts.setVecLib(CodeGenOptions::Accelerate);
else if (Name == "none")
Opts.setVecLib(CodeGenOptions::NoLibrary);
else
Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Name;
}
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;
if (const Arg *A =
Args.getLastArg(OPT_emit_llvm_uselists, OPT_no_emit_llvm_uselists))
Opts.EmitLLVMUseLists = A->getOption().getID() == OPT_emit_llvm_uselists;
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.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_unsafe_math_optimizations) ||
Args.hasArg(OPT_cl_finite_math_only) ||
Args.hasArg(OPT_cl_fast_relaxed_math));
Opts.NoSignedZeros = Args.hasArg(OPT_fno_signed_zeros);
Opts.ReciprocalMath = Args.hasArg(OPT_freciprocal_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.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.ThreadModel = Args.getLastArgValue(OPT_mthread_model, "posix");
if (Opts.ThreadModel != "posix" && Opts.ThreadModel != "single")
Diags.Report(diag::err_drv_invalid_value)
<< Args.getLastArg(OPT_mthread_model)->getAsString(Args)
<< Opts.ThreadModel;
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.UniqueSectionNames = Args.hasFlag(OPT_funique_section_names,
OPT_fno_unique_section_names, true);
Opts.MergeFunctions = Args.hasArg(OPT_fmerge_functions);
Opts.MSVolatile = Args.hasArg(OPT_fms_volatile);
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.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);
Opts.CoverageExitBlockBeforeBody =
Args.hasArg(OPT_coverage_exit_block_before_body);
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.SanitizeCoverage =
getLastArgIntValue(Args, OPT_fsanitize_coverage, 0, Diags);
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_mstack_probe_size)) {
StringRef Val = A->getValue();
unsigned StackProbeSize = Opts.StackProbeSize;
Val.getAsInteger(0, StackProbeSize);
Opts.StackProbeSize = StackProbeSize;
}
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 to use a sample profile for PGO, then the
// backend will need to track source location information so the profile
// can be incorporated into the IR.
if (!Opts.SampleProfileFile.empty())
NeedLocTracking = true;
// If the user requested a flag that requires source locations available in
// the backend, make sure that the backend tracks source location information.
if (NeedLocTracking && Opts.getDebugInfo() == CodeGenOptions::NoDebugInfo)
Opts.setDebugInfo(CodeGenOptions::LocTrackingOnly);
Opts.RewriteMapFiles = Args.getAllArgValues(OPT_frewrite_map_file);
// Parse -fsanitize-recover= arguments.
// FIXME: Report unrecoverable sanitizers incorrectly specified here.
parseSanitizerKinds("-fsanitize-recover=",
Args.getAllArgValues(OPT_fsanitize_recover_EQ), Diags,
Opts.SanitizeRecover);
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);
if (Arg *A =
Args.getLastArg(OPT_diagnostic_serialized_file, OPT__serialize_diags))
Opts.DiagnosticSerializationFile = A->getValue();
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.SpellCheckingLimit = getLastArgIntValue(
Args, OPT_fspell_checking_limit,
DiagnosticOptions::DefaultSpellCheckingLimit, 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.ModuleMapFiles = Args.getAllArgValues(OPT_fmodule_map_file);
Opts.ModuleFiles = Args.getAllArgValues(OPT_fmodule_file);
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_dot_syntax))
Opts.ObjCMTAction |= FrontendOptions::ObjCMT_PropertyDotSyntax;
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("cuda-cpp-output", IK_PreprocessedCuda)
.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) {
std::string ClangExecutable =
llvm::sys::fs::getMainExecutable(Argv0, MainAddr);
StringRef Dir = llvm::sys::path::parent_path(ClangExecutable);
// Compute the path to the resource directory.
StringRef ClangResourceDir(CLANG_RESOURCE_DIR);
SmallString<128> P(Dir);
if (ClangResourceDir != "") {
llvm::sys::path::append(P, ClangResourceDir);
} else {
StringRef ClangLibdirSuffix(CLANG_LIBDIR_SUFFIX);
llvm::sys::path::append(P, "..", Twine("lib") + ClangLibdirSuffix, "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.ModuleMapFileHomeIsCwd = Args.hasArg(OPT_fmodule_map_file_home_is_cwd);
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();
it != ie; ++it) {
StringRef MacroDef = (*it)->getValue();
Opts.ModulesIgnoreMacros.insert(MacroDef.split('=').first);
}
// Add -I..., -F..., and -index-header-map options in order.
bool IsIndexHeaderMap = false;
for (arg_iterator it = Args.filtered_begin(OPT_I, OPT_F,
OPT_index_header_map),
ie = Args.filtered_end(); it != ie; ++it) {
if ((*it)->getOption().matches(OPT_index_header_map)) {
// -index-header-map applies to the next -I or -F.
IsIndexHeaderMap = true;
continue;
}
frontend::IncludeDirGroup Group
= IsIndexHeaderMap? frontend::IndexHeaderMap : frontend::Angled;
Opts.AddPath((*it)->getValue(), Group,
/*IsFramework=*/ (*it)->getOption().matches(OPT_F), true);
IsIndexHeaderMap = false;
}
// Add -iprefix/-iwithprefix/-iwithprefixbefore options.
StringRef Prefix = ""; // FIXME: This isn't the correct default prefix.
for (arg_iterator it = Args.filtered_begin(OPT_iprefix, OPT_iwithprefix,
OPT_iwithprefixbefore),
ie = Args.filtered_end(); it != ie; ++it) {
const Arg *A = *it;
if (A->getOption().matches(OPT_iprefix))
Prefix = A->getValue();
else if (A->getOption().matches(OPT_iwithprefix))
Opts.AddPath(Prefix.str() + A->getValue(),
frontend::After, false, true);
else
Opts.AddPath(Prefix.str() + A->getValue(),
frontend::Angled, false, true);
}
for (arg_iterator it = Args.filtered_begin(OPT_idirafter),
ie = Args.filtered_end(); it != ie; ++it)
Opts.AddPath((*it)->getValue(), frontend::After, false, true);
for (arg_iterator it = Args.filtered_begin(OPT_iquote),
ie = Args.filtered_end(); it != ie; ++it)
Opts.AddPath((*it)->getValue(), frontend::Quoted, false, true);
for (arg_iterator it = Args.filtered_begin(OPT_isystem,
OPT_iwithsysroot), ie = Args.filtered_end(); it != ie; ++it)
Opts.AddPath((*it)->getValue(), frontend::System, false,
!(*it)->getOption().matches(OPT_iwithsysroot));
for (arg_iterator it = Args.filtered_begin(OPT_iframework),
ie = Args.filtered_end(); it != ie; ++it)
Opts.AddPath((*it)->getValue(), frontend::System, true, true);
// Add the paths for the various language specific isystem flags.
for (arg_iterator it = Args.filtered_begin(OPT_c_isystem),
ie = Args.filtered_end(); it != ie; ++it)
Opts.AddPath((*it)->getValue(), frontend::CSystem, false, true);
for (arg_iterator it = Args.filtered_begin(OPT_cxx_isystem),
ie = Args.filtered_end(); it != ie; ++it)
Opts.AddPath((*it)->getValue(), frontend::CXXSystem, false, true);
for (arg_iterator it = Args.filtered_begin(OPT_objc_isystem),
ie = Args.filtered_end(); it != ie; ++it)
Opts.AddPath((*it)->getValue(), frontend::ObjCSystem, false,true);
for (arg_iterator it = Args.filtered_begin(OPT_objcxx_isystem),
ie = Args.filtered_end(); it != ie; ++it)
Opts.AddPath((*it)->getValue(), frontend::ObjCXXSystem, false, true);
// Add the internal paths from a driver that detects standard include paths.
for (arg_iterator I = Args.filtered_begin(OPT_internal_isystem,
OPT_internal_externc_isystem),
E = Args.filtered_end();
I != E; ++I) {
frontend::IncludeDirGroup Group = frontend::System;
if ((*I)->getOption().matches(OPT_internal_externc_isystem))
Group = frontend::ExternCSystem;
Opts.AddPath((*I)->getValue(), Group, false, true);
}
// Add the path prefixes which are implicitly treated as being system headers.
for (arg_iterator I = Args.filtered_begin(OPT_system_header_prefix,
OPT_no_system_header_prefix),
E = Args.filtered_end();
I != E; ++I)
Opts.AddSystemHeaderPrefix(
(*I)->getValue(), (*I)->getOption().matches(OPT_system_header_prefix));
for (arg_iterator I = Args.filtered_begin(OPT_ivfsoverlay),
E = Args.filtered_end(); I != E; ++I)
Opts.AddVFSOverlayFile((*I)->getValue());
}
void CompilerInvocation::setLangDefaults(LangOptions &Opts, InputKind IK,
LangStandard::Kind LangStd) {
// Set some properties which depend solely on the input kind; it would be nice
// to move these to the language standard, and have the driver resolve the
// input kind + language standard.
if (IK == IK_Asm) {
Opts.AsmPreprocessor = 1;
} else if (IK == IK_ObjC ||
IK == IK_ObjCXX ||
IK == IK_PreprocessedObjC ||
IK == IK_PreprocessedObjCXX) {
Opts.ObjC1 = Opts.ObjC2 = 1;
}
if (LangStd == LangStandard::lang_unspecified) {
// Based on the base language, pick one.
switch (IK) {
case IK_None:
case IK_AST:
case IK_LLVM_IR:
llvm_unreachable("Invalid input kind!");
case IK_OpenCL:
LangStd = LangStandard::lang_opencl;
break;
case IK_CUDA:
case IK_PreprocessedCuda:
LangStd = LangStandard::lang_cuda;
break;
case IK_Asm:
case IK_C:
case IK_PreprocessedC:
case IK_ObjC:
case IK_PreprocessedObjC:
LangStd = LangStandard::lang_gnu11;
break;
case IK_CXX:
case IK_PreprocessedCXX:
case IK_ObjCXX:
case IK_PreprocessedObjCXX:
LangStd = LangStandard::lang_gnucxx98;
break;
}
}
const LangStandard &Std = LangStandard::getLangStandardForKind(LangStd);
Opts.LineComment = Std.hasLineComments();
Opts.C99 = Std.isC99();
Opts.C11 = Std.isC11();
Opts.CPlusPlus = Std.isCPlusPlus();
Opts.CPlusPlus11 = Std.isCPlusPlus11();
Opts.CPlusPlus14 = Std.isCPlusPlus14();
Opts.CPlusPlus1z = Std.isCPlusPlus1z();
Opts.Digraphs = Std.hasDigraphs();
Opts.GNUMode = Std.isGNUMode();
Opts.GNUInline = !Std.isC99();
Opts.HexFloats = Std.hasHexFloats();
Opts.ImplicitInt = Std.hasImplicitInt();
// Set OpenCL Version.
Opts.OpenCL = LangStd == LangStandard::lang_opencl || IK == IK_OpenCL;
if (LangStd == LangStandard::lang_opencl)
Opts.OpenCLVersion = 100;
else if (LangStd == LangStandard::lang_opencl11)
Opts.OpenCLVersion = 110;
else if (LangStd == LangStandard::lang_opencl12)
Opts.OpenCLVersion = 120;
else if (LangStd == LangStandard::lang_opencl20)
Opts.OpenCLVersion = 200;
// OpenCL has some additional defaults.
if (Opts.OpenCL) {
Opts.AltiVec = 0;
Opts.CXXOperatorNames = 1;
Opts.LaxVectorConversions = 0;
Opts.DefaultFPContract = 1;
Opts.NativeHalfType = 1;
}
Opts.CUDA = IK == IK_CUDA || IK == IK_PreprocessedCuda ||
LangStd == LangStandard::lang_cuda;
// OpenCL and C++ both have bool, true, false keywords.
Opts.Bool = Opts.OpenCL || Opts.CPlusPlus;
// OpenCL has half keyword
Opts.Half = Opts.OpenCL;
// C++ has wchar_t keyword.
Opts.WChar = Opts.CPlusPlus;
Opts.GNUKeywords = Opts.GNUMode;
Opts.CXXOperatorNames = Opts.CPlusPlus;
Opts.DollarIdents = !Opts.AsmPreprocessor;
}
/// Attempt to parse a visibility value out of the given argument.
static Visibility parseVisibility(Arg *arg, ArgList &args,
DiagnosticsEngine &diags) {
StringRef value = arg->getValue();
if (value == "default") {
return DefaultVisibility;
} else if (value == "hidden") {
return HiddenVisibility;
} else if (value == "protected") {
// FIXME: diagnose if target does not support protected visibility
return ProtectedVisibility;
}
diags.Report(diag::err_drv_invalid_value)
<< arg->getAsString(args) << value;
return DefaultVisibility;
}
static void ParseLangArgs(LangOptions &Opts, ArgList &Args, InputKind IK,
DiagnosticsEngine &Diags) {
// FIXME: Cleanup per-file based stuff.
LangStandard::Kind LangStd = LangStandard::lang_unspecified;
if (const Arg *A = Args.getLastArg(OPT_std_EQ)) {
LangStd = llvm::StringSwitch<LangStandard::Kind>(A->getValue())
#define LANGSTANDARD(id, name, desc, features) \
.Case(name, LangStandard::lang_##id)
#include "clang/Frontend/LangStandards.def"
.Default(LangStandard::lang_unspecified);
if (LangStd == LangStandard::lang_unspecified)
Diags.Report(diag::err_drv_invalid_value)
<< A->getAsString(Args) << A->getValue();
else {
// Valid standard, check to make sure language and standard are
// compatible.
const LangStandard &Std = LangStandard::getLangStandardForKind(LangStd);
switch (IK) {
case IK_C:
case IK_ObjC:
case IK_PreprocessedC:
case IK_PreprocessedObjC:
if (!(Std.isC89() || Std.isC99()))
Diags.Report(diag::err_drv_argument_not_allowed_with)
<< A->getAsString(Args) << "C/ObjC";
break;
case IK_CXX:
case IK_ObjCXX:
case IK_PreprocessedCXX:
case IK_PreprocessedObjCXX:
if (!Std.isCPlusPlus())
Diags.Report(diag::err_drv_argument_not_allowed_with)
<< A->getAsString(Args) << "C++/ObjC++";
break;
case IK_OpenCL:
if (!Std.isC99())
Diags.Report(diag::err_drv_argument_not_allowed_with)
<< A->getAsString(Args) << "OpenCL";
break;
case IK_CUDA:
case IK_PreprocessedCuda:
if (!Std.isCPlusPlus())
Diags.Report(diag::err_drv_argument_not_allowed_with)
<< A->getAsString(Args) << "CUDA";
break;
default:
break;
}
}
}
// -cl-std only applies for OpenCL language standards.
// Override the -std option in this case.
if (const Arg *A = Args.getLastArg(OPT_cl_std_EQ)) {
LangStandard::Kind OpenCLLangStd
= llvm::StringSwitch<LangStandard::Kind>(A->getValue())
.Case("CL", LangStandard::lang_opencl)
.Case("CL1.1", LangStandard::lang_opencl11)
.Case("CL1.2", LangStandard::lang_opencl12)
.Case("CL2.0", LangStandard::lang_opencl20)
.Default(LangStandard::lang_unspecified);
if (OpenCLLangStd == LangStandard::lang_unspecified) {
Diags.Report(diag::err_drv_invalid_value)
<< A->getAsString(Args) << A->getValue();
}
else
LangStd = OpenCLLangStd;
}
CompilerInvocation::setLangDefaults(Opts, IK, LangStd);
// We abuse '-f[no-]gnu-keywords' to force overriding all GNU-extension
// keywords. This behavior is provided by GCC's poorly named '-fasm' flag,
// while a subset (the non-C++ GNU keywords) is provided by GCC's
// '-fgnu-keywords'. Clang conflates the two for simplicity under the single
// name, as it doesn't seem a useful distinction.
Opts.GNUKeywords = Args.hasFlag(OPT_fgnu_keywords, OPT_fno_gnu_keywords,
Opts.GNUKeywords);
if (Args.hasArg(OPT_fno_operator_names))
Opts.CXXOperatorNames = 0;
if (Args.hasArg(OPT_fcuda_is_device))
Opts.CUDAIsDevice = 1;
if (Args.hasArg(OPT_fcuda_allow_host_calls_from_host_device))
Opts.CUDAAllowHostCallsFromHostDevice = 1;
if (Args.hasArg(OPT_fcuda_disable_target_call_checks))
Opts.CUDADisableTargetCallChecks = 1;
if (Opts.ObjC1) {
if (Arg *arg = Args.getLastArg(OPT_fobjc_runtime_EQ)) {
StringRef value = arg->getValue();
if (Opts.ObjCRuntime.tryParse(value))
Diags.Report(diag::err_drv_unknown_objc_runtime) << value;
}
if (Args.hasArg(OPT_fobjc_gc_only))
Opts.setGC(LangOptions::GCOnly);
else if (Args.hasArg(OPT_fobjc_gc))
Opts.setGC(LangOptions::HybridGC);
else if (Args.hasArg(OPT_fobjc_arc)) {
Opts.ObjCAutoRefCount = 1;
if (!Opts.ObjCRuntime.allowsARC())
Diags.Report(diag::err_arc_unsupported_on_runtime);
// Only set ObjCARCWeak if ARC is enabled.
if (Args.hasArg(OPT_fobjc_runtime_has_weak))
Opts.ObjCARCWeak = 1;
else
Opts.ObjCARCWeak = Opts.ObjCRuntime.allowsWeak();
}
if (Args.hasArg(OPT_fno_objc_infer_related_result_type))
Opts.ObjCInferRelatedResultType = 0;
if (Args.hasArg(OPT_fobjc_subscripting_legacy_runtime))
Opts.ObjCSubscriptingLegacyRuntime =
(Opts.ObjCRuntime.getKind() == ObjCRuntime::FragileMacOSX);
}
if (Args.hasArg(OPT_fgnu89_inline))
Opts.GNUInline = 1;
if (Args.hasArg(OPT_fapple_kext)) {
if (!Opts.CPlusPlus)
Diags.Report(diag::warn_c_kext);
else
Opts.AppleKext = 1;
}
if (Args.hasArg(OPT_print_ivar_layout))
Opts.ObjCGCBitmapPrint = 1;
if (Args.hasArg(OPT_fno_constant_cfstrings))
Opts.NoConstantCFStrings = 1;
if (Args.hasArg(OPT_faltivec))
Opts.AltiVec = 1;
if (Args.hasArg(OPT_pthread))
Opts.POSIXThreads = 1;
// The value-visibility mode defaults to "default".
if (Arg *visOpt = Args.getLastArg(OPT_fvisibility)) {
Opts.setValueVisibilityMode(parseVisibility(visOpt, Args, Diags));
} else {
Opts.setValueVisibilityMode(DefaultVisibility);
}
// The type-visibility mode defaults to the value-visibility mode.
if (Arg *typeVisOpt = Args.getLastArg(OPT_ftype_visibility)) {
Opts.setTypeVisibilityMode(parseVisibility(typeVisOpt, Args, Diags));
} else {
Opts.setTypeVisibilityMode(Opts.getValueVisibilityMode());
}
if (Args.hasArg(OPT_fvisibility_inlines_hidden))
Opts.InlineVisibilityHidden = 1;
if (Args.hasArg(OPT_ftrapv)) {
Opts.setSignedOverflowBehavior(LangOptions::SOB_Trapping);
// Set the handler, if one is specified.
Opts.OverflowHandler =
Args.getLastArgValue(OPT_ftrapv_handler);
}
else if (Args.hasArg(OPT_fwrapv))
Opts.setSignedOverflowBehavior(LangOptions::SOB_Defined);
Opts.MSVCCompat = Args.hasArg(OPT_fms_compatibility);
Opts.MicrosoftExt = Opts.MSVCCompat || Args.hasArg(OPT_fms_extensions);
Opts.AsmBlocks = Args.hasArg(OPT_fasm_blocks) || Opts.MicrosoftExt;
Opts.MSCompatibilityVersion = 0;
if (const Arg *A = Args.getLastArg(OPT_fms_compatibility_version)) {
VersionTuple VT;
if (VT.tryParse(A->getValue()))
Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args)
<< A->getValue();
Opts.MSCompatibilityVersion = VT.getMajor() * 10000000 +
VT.getMinor().getValueOr(0) * 100000 +
VT.getSubminor().getValueOr(0);
}
// Mimicing gcc's behavior, trigraphs are only enabled if -trigraphs
// is specified, or -std is set to a conforming mode.
// Trigraphs are disabled by default in c++1z onwards.
Opts.Trigraphs = !Opts.GNUMode && !Opts.MSVCCompat && !Opts.CPlusPlus1z;
Opts.Trigraphs =
Args.hasFlag(OPT_ftrigraphs, OPT_fno_trigraphs, Opts.Trigraphs);
Opts.DollarIdents = Args.hasFlag(OPT_fdollars_in_identifiers,
OPT_fno_dollars_in_identifiers,
Opts.DollarIdents);
Opts.PascalStrings = Args.hasArg(OPT_fpascal_strings);
Opts.VtorDispMode = getLastArgIntValue(Args, OPT_vtordisp_mode_EQ, 1, Diags);
Opts.Borland = Args.hasArg(OPT_fborland_extensions);
Opts.WritableStrings = Args.hasArg(OPT_fwritable_strings);
Opts.ConstStrings = Args.hasFlag(OPT_fconst_strings, OPT_fno_const_strings,
Opts.ConstStrings);
if (Args.hasArg(OPT_fno_lax_vector_conversions))
Opts.LaxVectorConversions = 0;
if (Args.hasArg(OPT_fno_threadsafe_statics))
Opts.ThreadsafeStatics = 0;
Opts.Exceptions = Args.hasArg(OPT_fexceptions);
Opts.ObjCExceptions = Args.hasArg(OPT_fobjc_exceptions);
Opts.CXXExceptions = Args.hasArg(OPT_fcxx_exceptions);
Opts.SjLjExceptions = Args.hasArg(OPT_fsjlj_exceptions);
Opts.TraditionalCPP = Args.hasArg(OPT_traditional_cpp);
Opts.RTTI = !Args.hasArg(OPT_fno_rtti);
Opts.RTTIData = Opts.RTTI && !Args.hasArg(OPT_fno_rtti_data);
Opts.Blocks = Args.hasArg(OPT_fblocks);
Opts.BlocksRuntimeOptional = Args.hasArg(OPT_fblocks_runtime_optional);
Opts.Modules = Args.hasArg(OPT_fmodules);
Opts.ModulesStrictDeclUse = Args.hasArg(OPT_fmodules_strict_decluse);
Opts.ModulesDeclUse =
Args.hasArg(OPT_fmodules_decluse) || Opts.ModulesStrictDeclUse;
Opts.ModulesSearchAll = Opts.Modules &&
!Args.hasArg(OPT_fno_modules_search_all) &&
Args.hasArg(OPT_fmodules_search_all);
Opts.ModulesErrorRecovery = !Args.hasArg(OPT_fno_modules_error_recovery);
Opts.ModulesImplicitMaps = Args.hasFlag(OPT_fmodules_implicit_maps,
OPT_fno_modules_implicit_maps, true);
Opts.ImplicitModules = !Args.hasArg(OPT_fno_implicit_modules);
Opts.CharIsSigned = Opts.OpenCL || !Args.hasArg(OPT_fno_signed_char);
Opts.WChar = Opts.CPlusPlus && !Args.hasArg(OPT_fno_wchar);
Opts.ShortWChar = Args.hasFlag(OPT_fshort_wchar, OPT_fno_short_wchar, false);
Opts.ShortEnums = Args.hasArg(OPT_fshort_enums);
Opts.Freestanding = Args.hasArg(OPT_ffreestanding);
Opts.NoBuiltin = Args.hasArg(OPT_fno_builtin) || Opts.Freestanding;
Opts.NoMathBuiltin = Args.hasArg(OPT_fno_math_builtin);
Opts.AssumeSaneOperatorNew = !Args.hasArg(OPT_fno_assume_sane_operator_new);
Opts.SizedDeallocation = Args.hasArg(OPT_fsized_deallocation);
Opts.HeinousExtensions = Args.hasArg(OPT_fheinous_gnu_extensions);
Opts.AccessControl = !Args.hasArg(OPT_fno_access_control);
Opts.ElideConstructors = !Args.hasArg(OPT_fno_elide_constructors);
Opts.MathErrno = !Opts.OpenCL && Args.hasArg(OPT_fmath_errno);
Opts.InstantiationDepth =
getLastArgIntValue(Args, OPT_ftemplate_depth, 256, Diags);
Opts.ArrowDepth =
getLastArgIntValue(Args, OPT_foperator_arrow_depth, 256, Diags);
Opts.ConstexprCallDepth =
getLastArgIntValue(Args, OPT_fconstexpr_depth, 512, Diags);
Opts.ConstexprStepLimit =
getLastArgIntValue(Args, OPT_fconstexpr_steps, 1048576, Diags);
Opts.BracketDepth = getLastArgIntValue(Args, OPT_fbracket_depth, 256, Diags);
Opts.DelayedTemplateParsing = Args.hasArg(OPT_fdelayed_template_parsing);
Opts.NumLargeByValueCopy =
getLastArgIntValue(Args, OPT_Wlarge_by_value_copy_EQ, 0, Diags);
Opts.MSBitfields = Args.hasArg(OPT_mms_bitfields);
Opts.ObjCConstantStringClass =
Args.getLastArgValue(OPT_fconstant_string_class);
Opts.ObjCDefaultSynthProperties =
!Args.hasArg(OPT_disable_objc_default_synthesize_properties);
Opts.EncodeExtendedBlockSig =
Args.hasArg(OPT_fencode_extended_block_signature);
Opts.EmitAllDecls = Args.hasArg(OPT_femit_all_decls);
Opts.PackStruct = getLastArgIntValue(Args, OPT_fpack_struct_EQ, 0, Diags);
Opts.MaxTypeAlign = getLastArgIntValue(Args, OPT_fmax_type_align_EQ, 0, Diags);
Opts.PICLevel = getLastArgIntValue(Args, OPT_pic_level, 0, Diags);
Opts.PIELevel = getLastArgIntValue(Args, OPT_pie_level, 0, Diags);
Opts.Static = Args.hasArg(OPT_static_define);
Opts.DumpRecordLayoutsSimple = Args.hasArg(OPT_fdump_record_layouts_simple);
Opts.DumpRecordLayouts = Opts.DumpRecordLayoutsSimple
|| Args.hasArg(OPT_fdump_record_layouts);
Opts.DumpVTableLayouts = Args.hasArg(OPT_fdump_vtable_layouts);
Opts.SpellChecking = !Args.hasArg(OPT_fno_spell_checking);
Opts.NoBitFieldTypeAlign = Args.hasArg(OPT_fno_bitfield_type_align);
Opts.SinglePrecisionConstants = Args.hasArg(OPT_cl_single_precision_constant);
Opts.FastRelaxedMath = Args.hasArg(OPT_cl_fast_relaxed_math);
Opts.MRTD = Args.hasArg(OPT_mrtd);
Opts.HexagonQdsp6Compat = Args.hasArg(OPT_mqdsp6_compat);
Opts.FakeAddressSpaceMap = Args.hasArg(OPT_ffake_address_space_map);
Opts.ParseUnknownAnytype = Args.hasArg(OPT_funknown_anytype);
Opts.DebuggerSupport = Args.hasArg(OPT_fdebugger_support);
Opts.DebuggerCastResultToId = Args.hasArg(OPT_fdebugger_cast_result_to_id);
Opts.DebuggerObjCLiteral = Args.hasArg(OPT_fdebugger_objc_literal);
Opts.ApplePragmaPack = Args.hasArg(OPT_fapple_pragma_pack);
Opts.CurrentModule = Args.getLastArgValue(OPT_fmodule_name);
Opts.AppExt = Args.hasArg(OPT_fapplication_extension);
Opts.ImplementationOfModule =
Args.getLastArgValue(OPT_fmodule_implementation_of);
Opts.ModuleFeatures = Args.getAllArgValues(OPT_fmodule_feature);
Opts.NativeHalfType |= Args.hasArg(OPT_fnative_half_type);
Opts.HalfArgsAndReturns = Args.hasArg(OPT_fallow_half_arguments_and_returns);
Opts.GNUAsm = !Args.hasArg(OPT_fno_gnu_inline_asm);
if (!Opts.CurrentModule.empty() && !Opts.ImplementationOfModule.empty() &&
Opts.CurrentModule != Opts.ImplementationOfModule) {
Diags.Report(diag::err_conflicting_module_names)
<< Opts.CurrentModule << Opts.ImplementationOfModule;
}
if (Arg *A = Args.getLastArg(OPT_faddress_space_map_mangling_EQ)) {
switch (llvm::StringSwitch<unsigned>(A->getValue())
.Case("target", LangOptions::ASMM_Target)
.Case("no", LangOptions::ASMM_Off)
.Case("yes", LangOptions::ASMM_On)
.Default(255)) {
default:
Diags.Report(diag::err_drv_invalid_value)
<< "-faddress-space-map-mangling=" << A->getValue();
break;
case LangOptions::ASMM_Target:
Opts.setAddressSpaceMapMangling(LangOptions::ASMM_Target);
break;
case LangOptions::ASMM_On:
Opts.setAddressSpaceMapMangling(LangOptions::ASMM_On);
break;
case LangOptions::ASMM_Off:
Opts.setAddressSpaceMapMangling(LangOptions::ASMM_Off);
break;
}
}
if (Arg *A = Args.getLastArg(OPT_fms_memptr_rep_EQ)) {
LangOptions::PragmaMSPointersToMembersKind InheritanceModel =
llvm::StringSwitch<LangOptions::PragmaMSPointersToMembersKind>(
A->getValue())
.Case("single",
LangOptions::PPTMK_FullGeneralitySingleInheritance)
.Case("multiple",
LangOptions::PPTMK_FullGeneralityMultipleInheritance)
.Case("virtual",
LangOptions::PPTMK_FullGeneralityVirtualInheritance)
.Default(LangOptions::PPTMK_BestCase);
if (InheritanceModel == LangOptions::PPTMK_BestCase)
Diags.Report(diag::err_drv_invalid_value)
<< "-fms-memptr-rep=" << A->getValue();
Opts.setMSPointerToMemberRepresentationMethod(InheritanceModel);
}
// Check if -fopenmp= is specified.
if (const Arg *A = Args.getLastArg(options::OPT_fopenmp_EQ)) {
Opts.OpenMP = llvm::StringSwitch<bool>(A->getValue())
.Case("libiomp5", true)
.Default(false);
}
// Record whether the __DEPRECATED define was requested.
Opts.Deprecated = Args.hasFlag(OPT_fdeprecated_macro,
OPT_fno_deprecated_macro,
Opts.Deprecated);
// FIXME: Eliminate this dependency.
unsigned Opt = getOptimizationLevel(Args, IK, Diags),
OptSize = getOptimizationLevelSize(Args);
Opts.Optimize = Opt != 0;
Opts.OptimizeSize = OptSize != 0;
// This is the __NO_INLINE__ define, which just depends on things like the
// optimization level and -fno-inline, not actually whether the backend has
// inlining enabled.
Opts.NoInlineDefine = !Opt || Args.hasArg(OPT_fno_inline);
Opts.FastMath = Args.hasArg(OPT_ffast_math) ||
Args.hasArg(OPT_cl_fast_relaxed_math);
Opts.FiniteMathOnly = Args.hasArg(OPT_ffinite_math_only) ||
Args.hasArg(OPT_cl_finite_math_only) ||
Args.hasArg(OPT_cl_fast_relaxed_math);
Opts.RetainCommentsFromSystemHeaders =
Args.hasArg(OPT_fretain_comments_from_system_headers);
unsigned SSP = getLastArgIntValue(Args, OPT_stack_protector, 0, Diags);
switch (SSP) {
default:
Diags.Report(diag::err_drv_invalid_value)
<< Args.getLastArg(OPT_stack_protector)->getAsString(Args) << SSP;
break;
case 0: Opts.setStackProtector(LangOptions::SSPOff); break;
case 1: Opts.setStackProtector(LangOptions::SSPOn); break;
case 2: Opts.setStackProtector(LangOptions::SSPStrong); break;
case 3: Opts.setStackProtector(LangOptions::SSPReq); break;
}
// Parse -fsanitize= arguments.
parseSanitizerKinds("-fsanitize=", Args.getAllArgValues(OPT_fsanitize_EQ),
Diags, Opts.Sanitize);
// -fsanitize-address-field-padding=N has to be a LangOpt, parse it here.
Opts.SanitizeAddressFieldPadding =
getLastArgIntValue(Args, OPT_fsanitize_address_field_padding, 0, Diags);
Opts.SanitizerBlacklistFiles = Args.getAllArgValues(OPT_fsanitize_blacklist);
}
static void ParsePreprocessorArgs(PreprocessorOptions &Opts, ArgList &Args,
FileManager &FileMgr,
DiagnosticsEngine &Diags) {
using namespace options;
Opts.ImplicitPCHInclude = Args.getLastArgValue(OPT_include_pch);
Opts.ImplicitPTHInclude = Args.getLastArgValue(OPT_include_pth);
if (const Arg *A = Args.getLastArg(OPT_token_cache))
Opts.TokenCache = A->getValue();
else
Opts.TokenCache = Opts.ImplicitPTHInclude;
Opts.UsePredefines = !Args.hasArg(OPT_undef);
Opts.DetailedRecord = Args.hasArg(OPT_detailed_preprocessing_record);
Opts.DisablePCHValidation = Args.hasArg(OPT_fno_validate_pch);
Opts.DumpDeserializedPCHDecls = Args.hasArg(OPT_dump_deserialized_pch_decls);
for (arg_iterator it = Args.filtered_begin(OPT_error_on_deserialized_pch_decl),
ie = Args.filtered_end(); it != ie; ++it) {
const Arg *A = *it;
Opts.DeserializedPCHDeclsToErrorOn.insert(A->getValue());
}
if (const Arg *A = Args.getLastArg(OPT_preamble_bytes_EQ)) {
StringRef Value(A->getValue());
size_t Comma = Value.find(',');
unsigned Bytes = 0;
unsigned EndOfLine = 0;
if (Comma == StringRef::npos ||
Value.substr(0, Comma).getAsInteger(10, Bytes) ||
Value.substr(Comma + 1).getAsInteger(10, EndOfLine))
Diags.Report(diag::err_drv_preamble_format);
else {
Opts.PrecompiledPreambleBytes.first = Bytes;
Opts.PrecompiledPreambleBytes.second = (EndOfLine != 0);
}
}
// Add macros from the command line.
for (arg_iterator it = Args.filtered_begin(OPT_D, OPT_U),
ie = Args.filtered_end(); it != ie; ++it) {
if ((*it)->getOption().matches(OPT_D))
Opts.addMacroDef((*it)->getValue());
else
Opts.addMacroUndef((*it)->getValue());
}
Opts.MacroIncludes = Args.getAllArgValues(OPT_imacros);
// Add the ordered list of -includes.
for (arg_iterator it = Args.filtered_begin(OPT_include),
ie = Args.filtered_end(); it != ie; ++it) {
const Arg *A = *it;
Opts.Includes.push_back(A->getValue());
}
for (arg_iterator it = Args.filtered_begin(OPT_chain_include),
ie = Args.filtered_end(); it != ie; ++it) {
const Arg *A = *it;
Opts.ChainedIncludes.push_back(A->getValue());
}
// Include 'altivec.h' if -faltivec option present
if (Args.hasArg(OPT_faltivec))
Opts.Includes.push_back("altivec.h");
for (arg_iterator it = Args.filtered_begin(OPT_remap_file),
ie = Args.filtered_end(); it != ie; ++it) {
const Arg *A = *it;
std::pair<StringRef,StringRef> Split =
StringRef(A->getValue()).split(';');
if (Split.second.empty()) {
Diags.Report(diag::err_drv_invalid_remap_file) << A->getAsString(Args);
continue;
}
Opts.addRemappedFile(Split.first, Split.second);
}
if (Arg *A = Args.getLastArg(OPT_fobjc_arc_cxxlib_EQ)) {
StringRef Name = A->getValue();
unsigned Library = llvm::StringSwitch<unsigned>(Name)
.Case("libc++", ARCXX_libcxx)
.Case("libstdc++", ARCXX_libstdcxx)
.Case("none", ARCXX_nolib)
.Default(~0U);
if (Library == ~0U)
Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Name;
else
Opts.ObjCXXARCStandardLibrary = (ObjCXXARCStandardLibraryKind)Library;
}
}
static void ParsePreprocessorOutputArgs(PreprocessorOutputOptions &Opts,
ArgList &Args,
frontend::ActionKind Action) {
using namespace options;
switch (Action) {
case frontend::ASTDeclList:
case frontend::ASTDump:
case frontend::ASTPrint:
case frontend::ASTView:
case frontend::EmitAssembly:
case frontend::EmitBC:
case frontend::EmitHTML:
case frontend::EmitLLVM:
case frontend::EmitLLVMOnly:
case frontend::EmitCodeGenOnly:
case frontend::EmitObj:
case frontend::FixIt:
case frontend::GenerateModule:
case frontend::GeneratePCH:
case frontend::GeneratePTH:
case frontend::ParseSyntaxOnly:
case frontend::ModuleFileInfo:
case frontend::VerifyPCH:
case frontend::PluginAction:
case frontend::PrintDeclContext:
case frontend::RewriteObjC:
case frontend::RewriteTest:
case frontend::RunAnalysis:
case frontend::MigrateSource:
Opts.ShowCPP = 0;
break;
case frontend::DumpRawTokens:
case frontend::DumpTokens:
case frontend::InitOnly:
case frontend::PrintPreamble:
case frontend::PrintPreprocessedInput:
case frontend::RewriteMacros:
case frontend::RunPreprocessorOnly:
Opts.ShowCPP = !Args.hasArg(OPT_dM);
break;
}
Opts.ShowComments = Args.hasArg(OPT_C);
Opts.ShowLineMarkers = !Args.hasArg(OPT_P);
Opts.ShowMacroComments = Args.hasArg(OPT_CC);
Opts.ShowMacros = Args.hasArg(OPT_dM) || Args.hasArg(OPT_dD);
Opts.RewriteIncludes = Args.hasArg(OPT_frewrite_includes);
Opts.UseLineDirectives = Args.hasArg(OPT_fuse_line_directives);
}
static void ParseTargetArgs(TargetOptions &Opts, ArgList &Args) {
using namespace options;
Opts.ABI = Args.getLastArgValue(OPT_target_abi);
Opts.CPU = Args.getLastArgValue(OPT_target_cpu);
Opts.FPMath = Args.getLastArgValue(OPT_mfpmath);
Opts.FeaturesAsWritten = Args.getAllArgValues(OPT_target_feature);
Opts.LinkerVersion = Args.getLastArgValue(OPT_target_linker_version);
Opts.Triple = llvm::Triple::normalize(Args.getLastArgValue(OPT_triple));
// Use the default target triple if unspecified.
if (Opts.Triple.empty())
Opts.Triple = llvm::sys::getDefaultTargetTriple();
}
bool CompilerInvocation::CreateFromArgs(CompilerInvocation &Res,
const char *const *ArgBegin,
const char *const *ArgEnd,
DiagnosticsEngine &Diags) {
bool Success = true;
// Parse the arguments.
std::unique_ptr<OptTable> Opts(createDriverOptTable());
const unsigned IncludedFlagsBitmask = options::CC1Option;
unsigned MissingArgIndex, MissingArgCount;
std::unique_ptr<InputArgList> Args(
Opts->ParseArgs(ArgBegin, ArgEnd, MissingArgIndex, MissingArgCount,
IncludedFlagsBitmask));
// Check for missing argument error.
if (MissingArgCount) {
Diags.Report(diag::err_drv_missing_argument)
<< Args->getArgString(MissingArgIndex) << MissingArgCount;
Success = false;
}
// Issue errors on unknown arguments.
for (arg_iterator it = Args->filtered_begin(OPT_UNKNOWN),
ie = Args->filtered_end(); it != ie; ++it) {
Diags.Report(diag::err_drv_unknown_argument) << (*it)->getAsString(*Args);
Success = false;
}
Success = ParseAnalyzerArgs(*Res.getAnalyzerOpts(), *Args, Diags) && Success;
Success = ParseMigratorArgs(Res.getMigratorOpts(), *Args) && Success;
ParseDependencyOutputArgs(Res.getDependencyOutputOpts(), *Args);
Success = ParseDiagnosticArgs(Res.getDiagnosticOpts(), *Args, &Diags)
&& Success;
ParseCommentArgs(Res.getLangOpts()->CommentOpts, *Args);
ParseFileSystemArgs(Res.getFileSystemOpts(), *Args);
// FIXME: We shouldn't have to pass the DashX option around here
InputKind DashX = ParseFrontendArgs(Res.getFrontendOpts(), *Args, Diags);
ParseTargetArgs(Res.getTargetOpts(), *Args);
Success = ParseCodeGenArgs(Res.getCodeGenOpts(), *Args, DashX, Diags,
Res.getTargetOpts()) && Success;
ParseHeaderSearchArgs(Res.getHeaderSearchOpts(), *Args);
if (DashX != IK_AST && DashX != IK_LLVM_IR) {
ParseLangArgs(*Res.getLangOpts(), *Args, DashX, Diags);
if (Res.getFrontendOpts().ProgramAction == frontend::RewriteObjC)
Res.getLangOpts()->ObjCExceptions = 1;
}
// FIXME: ParsePreprocessorArgs uses the FileManager to read the contents of
// PCH file and find the original header name. Remove the need to do that in
// ParsePreprocessorArgs and remove the FileManager
// parameters from the function and the "FileManager.h" #include.
FileManager FileMgr(Res.getFileSystemOpts());
ParsePreprocessorArgs(Res.getPreprocessorOpts(), *Args, FileMgr, Diags);
ParsePreprocessorOutputArgs(Res.getPreprocessorOutputOpts(), *Args,
Res.getFrontendOpts().ProgramAction);
return Success;
}
namespace {
class ModuleSignature {
SmallVector<uint64_t, 16> Data;
unsigned CurBit;
uint64_t CurValue;
public:
ModuleSignature() : CurBit(0), CurValue(0) { }
void add(uint64_t Value, unsigned Bits);
void add(StringRef Value);
void flush();
llvm::APInt getAsInteger() const;
};
}
void ModuleSignature::add(uint64_t Value, unsigned int NumBits) {
CurValue |= Value << CurBit;
if (CurBit + NumBits < 64) {
CurBit += NumBits;
return;
}
// Add the current word.
Data.push_back(CurValue);
if (CurBit)
CurValue = Value >> (64-CurBit);
else
CurValue = 0;
CurBit = (CurBit+NumBits) & 63;
}
void ModuleSignature::flush() {
if (CurBit == 0)
return;
Data.push_back(CurValue);
CurBit = 0;
CurValue = 0;
}
void ModuleSignature::add(StringRef Value) {
for (StringRef::iterator I = Value.begin(), IEnd = Value.end(); I != IEnd;++I)
add(*I, 8);
}
llvm::APInt ModuleSignature::getAsInteger() const {
return llvm::APInt(Data.size() * 64, Data);
}
std::string CompilerInvocation::getModuleHash() const {
// Note: For QoI reasons, the things we use as a hash here should all be
// dumped via the -module-info flag.
using llvm::hash_code;
using llvm::hash_value;
using llvm::hash_combine;
// Start the signature with the compiler version.
// FIXME: We'd rather use something more cryptographically sound than
// CityHash, but this will do for now.
hash_code code = hash_value(getClangFullRepositoryVersion());
// Extend the signature with the language options
#define LANGOPT(Name, Bits, Default, Description) \
code = hash_combine(code, LangOpts->Name);
#define ENUM_LANGOPT(Name, Type, Bits, Default, Description) \
code = hash_combine(code, static_cast<unsigned>(LangOpts->get##Name()));
#define BENIGN_LANGOPT(Name, Bits, Default, Description)
#define BENIGN_ENUM_LANGOPT(Name, Type, Bits, Default, Description)
#include "clang/Basic/LangOptions.def"
// Extend the signature with the target options.
code = hash_combine(code, TargetOpts->Triple, TargetOpts->CPU,
TargetOpts->ABI);
for (unsigned i = 0, n = TargetOpts->FeaturesAsWritten.size(); i != n; ++i)
code = hash_combine(code, TargetOpts->FeaturesAsWritten[i]);
// Extend the signature with preprocessor options.
const PreprocessorOptions &ppOpts = getPreprocessorOpts();
const HeaderSearchOptions &hsOpts = getHeaderSearchOpts();
code = hash_combine(code, ppOpts.UsePredefines, ppOpts.DetailedRecord);
for (std::vector<std::pair<std::string, bool/*isUndef*/> >::const_iterator
I = getPreprocessorOpts().Macros.begin(),
IEnd = getPreprocessorOpts().Macros.end();
I != IEnd; ++I) {
// If we're supposed to ignore this macro for the purposes of modules,
// don't put it into the hash.
if (!hsOpts.ModulesIgnoreMacros.empty()) {
// Check whether we're ignoring this macro.
StringRef MacroDef = I->first;
if (hsOpts.ModulesIgnoreMacros.count(MacroDef.split('=').first))
continue;
}
code = hash_combine(code, I->first, I->second);
}
// Extend the signature with the sysroot.
code = hash_combine(code, hsOpts.Sysroot, hsOpts.UseBuiltinIncludes,
hsOpts.UseStandardSystemIncludes,
hsOpts.UseStandardCXXIncludes,
hsOpts.UseLibcxx);
code = hash_combine(code, hsOpts.ResourceDir);
// Extend the signature with the user build path.
code = hash_combine(code, hsOpts.ModuleUserBuildPath);
// Darwin-specific hack: if we have a sysroot, use the contents and
// modification time of
// $sysroot/System/Library/CoreServices/SystemVersion.plist
// as part of the module hash.
if (!hsOpts.Sysroot.empty()) {
SmallString<128> systemVersionFile;
systemVersionFile += hsOpts.Sysroot;
llvm::sys::path::append(systemVersionFile, "System");
llvm::sys::path::append(systemVersionFile, "Library");
llvm::sys::path::append(systemVersionFile, "CoreServices");
llvm::sys::path::append(systemVersionFile, "SystemVersion.plist");
llvm::ErrorOr<std::unique_ptr<llvm::MemoryBuffer>> buffer =
llvm::MemoryBuffer::getFile(systemVersionFile);
if (buffer) {
code = hash_combine(code, buffer.get()->getBuffer());
struct stat statBuf;
if (stat(systemVersionFile.c_str(), &statBuf) == 0)
code = hash_combine(code, statBuf.st_mtime);
}
}
return llvm::APInt(64, code).toString(36, /*Signed=*/false);
}
namespace clang {
template<typename IntTy>
static IntTy getLastArgIntValueImpl(const ArgList &Args, OptSpecifier Id,
IntTy Default,
DiagnosticsEngine *Diags) {
IntTy Res = Default;
if (Arg *A = Args.getLastArg(Id)) {
if (StringRef(A->getValue()).getAsInteger(10, Res)) {
if (Diags)
Diags->Report(diag::err_drv_invalid_int_value) << A->getAsString(Args)
<< A->getValue();
}
}
return Res;
}
// Declared in clang/Frontend/Utils.h.
int getLastArgIntValue(const ArgList &Args, OptSpecifier Id, int Default,
DiagnosticsEngine *Diags) {
return getLastArgIntValueImpl<int>(Args, Id, Default, Diags);
}
uint64_t getLastArgUInt64Value(const ArgList &Args, OptSpecifier Id,
uint64_t Default,
DiagnosticsEngine *Diags) {
return getLastArgIntValueImpl<uint64_t>(Args, Id, Default, Diags);
}
void BuryPointer(const void *Ptr) {
// This function may be called only a small fixed amount of times per each
// invocation, otherwise we do actually have a leak which we want to report.
// If this function is called more than kGraveYardMaxSize times, the pointers
// will not be properly buried and a leak detector will report a leak, which
// is what we want in such case.
static const size_t kGraveYardMaxSize = 16;
LLVM_ATTRIBUTE_UNUSED static const void *GraveYard[kGraveYardMaxSize];
static std::atomic<unsigned> GraveYardSize;
unsigned Idx = GraveYardSize++;
if (Idx >= kGraveYardMaxSize)
return;
GraveYard[Idx] = Ptr;
}
IntrusiveRefCntPtr<vfs::FileSystem>
createVFSFromCompilerInvocation(const CompilerInvocation &CI,
DiagnosticsEngine &Diags) {
if (CI.getHeaderSearchOpts().VFSOverlayFiles.empty())
return vfs::getRealFileSystem();
IntrusiveRefCntPtr<vfs::OverlayFileSystem>
Overlay(new vfs::OverlayFileSystem(vfs::getRealFileSystem()));
// earlier vfs files are on the bottom
for (const std::string &File : CI.getHeaderSearchOpts().VFSOverlayFiles) {
llvm::ErrorOr<std::unique_ptr<llvm::MemoryBuffer>> Buffer =
llvm::MemoryBuffer::getFile(File);
if (!Buffer) {
Diags.Report(diag::err_missing_vfs_overlay_file) << File;
return IntrusiveRefCntPtr<vfs::FileSystem>();
}
IntrusiveRefCntPtr<vfs::FileSystem> FS =
vfs::getVFSFromYAML(std::move(Buffer.get()), /*DiagHandler*/ nullptr);
if (!FS.get()) {
Diags.Report(diag::err_invalid_vfs_overlay) << File;
return IntrusiveRefCntPtr<vfs::FileSystem>();
}
Overlay->pushOverlay(FS);
}
return Overlay;
}
} // end namespace clang