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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 "TestModuleFileExtension.h"
#include "clang/Basic/Builtins.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/Lex/PreprocessorOptions.h"
#include "clang/Serialization/ASTReader.h"
#include "clang/Serialization/ModuleFileExtension.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/Linker/Linker.h"
#include "llvm/Option/Arg.h"
#include "llvm/Option/ArgList.h"
#include "llvm/Option/OptTable.h"
#include "llvm/Option/Option.h"
#include "llvm/ProfileData/InstrProfReader.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 "llvm/Target/TargetOptions.h"
#include "llvm/Support/ScopedPrinter.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)
: 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.getLanguage() == InputKind::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;
if (S == "g")
return 1;
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.emplace_back(Arg);
}
}
}
static void getAllNoBuiltinFuncValues(ArgList &Args,
std::vector<std::string> &Funcs) {
SmallVector<const char *, 8> Values;
for (const auto &Arg : Args) {
const Option &O = Arg->getOption();
if (O.matches(options::OPT_fno_builtin_)) {
const char *FuncName = Arg->getValue();
if (Builtin::Context::isBuiltinFunc(FuncName))
Values.push_back(FuncName);
}
}
Funcs.insert(Funcs.end(), Values.begin(), Values.end());
}
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.ShowEnabledCheckerList = Args.hasArg(OPT_analyzer_list_enabled_checkers);
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 (const Arg *A :
Args.filtered(OPT_analyzer_checker, OPT_analyzer_disable_checker)) {
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 (StringRef checker : checkers)
Opts.CheckersControlList.emplace_back(checker, enable);
}
// Go through the analyzer configuration options.
for (const Arg *A : Args.filtered(OPT_analyzer_config)) {
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";
}
static StringRef getRelocModel(ArgList &Args, DiagnosticsEngine &Diags) {
if (Arg *A = Args.getLastArg(OPT_mrelocation_model)) {
StringRef Value = A->getValue();
if (Value == "static" || Value == "pic" || Value == "ropi" ||
Value == "rwpi" || Value == "ropi-rwpi" || Value == "dynamic-no-pic")
return Value;
Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Value;
}
return "pic";
}
/// \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 parseDiagnosticLevelMask(StringRef FlagName,
const std::vector<std::string> &Levels,
DiagnosticsEngine *Diags,
DiagnosticLevelMask &M) {
bool Success = true;
for (const auto &Level : Levels) {
DiagnosticLevelMask const PM =
llvm::StringSwitch<DiagnosticLevelMask>(Level)
.Case("note", DiagnosticLevelMask::Note)
.Case("remark", DiagnosticLevelMask::Remark)
.Case("warning", DiagnosticLevelMask::Warning)
.Case("error", DiagnosticLevelMask::Error)
.Default(DiagnosticLevelMask::None);
if (PM == DiagnosticLevelMask::None) {
Success = false;
if (Diags)
Diags->Report(diag::err_drv_invalid_value) << FlagName << Level;
}
M = M | PM;
}
return Success;
}
static void parseSanitizerKinds(StringRef FlagName,
const std::vector<std::string> &Sanitizers,
DiagnosticsEngine &Diags, SanitizerSet &S) {
for (const auto &Sanitizer : Sanitizers) {
SanitizerMask K = parseSanitizerValue(Sanitizer, /*AllowGroups=*/false);
if (K == 0)
Diags.Report(diag::err_drv_invalid_value) << FlagName << Sanitizer;
else
S.set(K, true);
}
}
// Set the profile kind for fprofile-instrument.
static void setPGOInstrumentor(CodeGenOptions &Opts, ArgList &Args,
DiagnosticsEngine &Diags) {
Arg *A = Args.getLastArg(OPT_fprofile_instrument_EQ);
if (A == nullptr)
return;
StringRef S = A->getValue();
unsigned I = llvm::StringSwitch<unsigned>(S)
.Case("none", CodeGenOptions::ProfileNone)
.Case("clang", CodeGenOptions::ProfileClangInstr)
.Case("llvm", CodeGenOptions::ProfileIRInstr)
.Default(~0U);
if (I == ~0U) {
Diags.Report(diag::err_drv_invalid_pgo_instrumentor) << A->getAsString(Args)
<< S;
return;
}
CodeGenOptions::ProfileInstrKind Instrumentor =
static_cast<CodeGenOptions::ProfileInstrKind>(I);
Opts.setProfileInstr(Instrumentor);
}
// Set the profile kind using fprofile-instrument-use-path.
static void setPGOUseInstrumentor(CodeGenOptions &Opts,
const Twine &ProfileName) {
auto ReaderOrErr = llvm::IndexedInstrProfReader::create(ProfileName);
// In error, return silently and let Clang PGOUse report the error message.
if (auto E = ReaderOrErr.takeError()) {
llvm::consumeError(std::move(E));
Opts.setProfileUse(CodeGenOptions::ProfileClangInstr);
return;
}
std::unique_ptr<llvm::IndexedInstrProfReader> PGOReader =
std::move(ReaderOrErr.get());
if (PGOReader->isIRLevelProfile())
Opts.setProfileUse(CodeGenOptions::ProfileIRInstr);
else
Opts.setProfileUse(CodeGenOptions::ProfileClangInstr);
}
static bool ParseCodeGenArgs(CodeGenOptions &Opts, ArgList &Args, InputKind IK,
DiagnosticsEngine &Diags,
const TargetOptions &TargetOpts) {
using namespace options;
bool Success = true;
llvm::Triple Triple = llvm::Triple(TargetOpts.Triple);
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;
// At O0 we want to fully disable inlining outside of cases marked with
// 'alwaysinline' that are required for correctness.
Opts.setInlining((Opts.OptimizationLevel == 0)
? CodeGenOptions::OnlyAlwaysInlining
: CodeGenOptions::NormalInlining);
// Explicit inlining flags can disable some or all inlining even at
// optimization levels above zero.
if (Arg *InlineArg = Args.getLastArg(
options::OPT_finline_functions, options::OPT_finline_hint_functions,
options::OPT_fno_inline_functions, options::OPT_fno_inline)) {
if (Opts.OptimizationLevel > 0) {
const Option &InlineOpt = InlineArg->getOption();
if (InlineOpt.matches(options::OPT_finline_functions))
Opts.setInlining(CodeGenOptions::NormalInlining);
else if (InlineOpt.matches(options::OPT_finline_hint_functions))
Opts.setInlining(CodeGenOptions::OnlyHintInlining);
else
Opts.setInlining(CodeGenOptions::OnlyAlwaysInlining);
}
}
Opts.ExperimentalNewPassManager = Args.hasFlag(
OPT_fexperimental_new_pass_manager, OPT_fno_experimental_new_pass_manager,
/* Default */ false);
Opts.DebugPassManager =
Args.hasFlag(OPT_fdebug_pass_manager, OPT_fno_debug_pass_manager,
/* Default */ false);
if (Arg *A = Args.getLastArg(OPT_fveclib)) {
StringRef Name = A->getValue();
if (Name == "Accelerate")
Opts.setVecLib(CodeGenOptions::Accelerate);
else if (Name == "SVML")
Opts.setVecLib(CodeGenOptions::SVML);
else if (Name == "none")
Opts.setVecLib(CodeGenOptions::NoLibrary);
else
Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Name;
}
if (Arg *A = Args.getLastArg(OPT_debug_info_kind_EQ)) {
unsigned Val =
llvm::StringSwitch<unsigned>(A->getValue())
.Case("line-tables-only", codegenoptions::DebugLineTablesOnly)
.Case("limited", codegenoptions::LimitedDebugInfo)
.Case("standalone", codegenoptions::FullDebugInfo)
.Default(~0U);
if (Val == ~0U)
Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args)
<< A->getValue();
else
Opts.setDebugInfo(static_cast<codegenoptions::DebugInfoKind>(Val));
}
if (Arg *A = Args.getLastArg(OPT_debugger_tuning_EQ)) {
unsigned Val = llvm::StringSwitch<unsigned>(A->getValue())
.Case("gdb", unsigned(llvm::DebuggerKind::GDB))
.Case("lldb", unsigned(llvm::DebuggerKind::LLDB))
.Case("sce", unsigned(llvm::DebuggerKind::SCE))
.Default(~0U);
if (Val == ~0U)
Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args)
<< A->getValue();
else
Opts.setDebuggerTuning(static_cast<llvm::DebuggerKind>(Val));
}
Opts.DwarfVersion = getLastArgIntValue(Args, OPT_dwarf_version_EQ, 0, Diags);
Opts.DebugColumnInfo = Args.hasArg(OPT_dwarf_column_info);
Opts.EmitCodeView = Args.hasArg(OPT_gcodeview);
Opts.MacroDebugInfo = Args.hasArg(OPT_debug_info_macro);
Opts.WholeProgramVTables = Args.hasArg(OPT_fwhole_program_vtables);
Opts.LTOVisibilityPublicStd = Args.hasArg(OPT_flto_visibility_public_std);
Opts.EnableSplitDwarf = Args.hasArg(OPT_enable_split_dwarf);
Opts.SplitDwarfFile = Args.getLastArgValue(OPT_split_dwarf_file);
Opts.SplitDwarfInlining = !Args.hasArg(OPT_fno_split_dwarf_inlining);
Opts.DebugTypeExtRefs = Args.hasArg(OPT_dwarf_ext_refs);
Opts.DebugExplicitImport = Triple.isPS4CPU();
for (const auto &Arg : Args.getAllArgValues(OPT_fdebug_prefix_map_EQ))
Opts.DebugPrefixMap.insert(StringRef(Arg).split('='));
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.DisableLLVMPasses = Args.hasArg(OPT_disable_llvm_passes);
Opts.DisableLifetimeMarkers = Args.hasArg(OPT_disable_lifetimemarkers);
Opts.DisableO0ImplyOptNone = Args.hasArg(OPT_disable_O0_optnone);
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));
if (Opts.SimplifyLibCalls)
getAllNoBuiltinFuncValues(Args, Opts.NoBuiltinFuncs);
Opts.UnrollLoops =
Args.hasFlag(OPT_funroll_loops, OPT_fno_unroll_loops,
(Opts.OptimizationLevel > 1));
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.DebugInfoForProfiling = Args.hasFlag(
OPT_fdebug_info_for_profiling, OPT_fno_debug_info_for_profiling, false);
setPGOInstrumentor(Opts, Args, Diags);
Opts.InstrProfileOutput =
Args.getLastArgValue(OPT_fprofile_instrument_path_EQ);
Opts.ProfileInstrumentUsePath =
Args.getLastArgValue(OPT_fprofile_instrument_use_path_EQ);
if (!Opts.ProfileInstrumentUsePath.empty())
setPGOUseInstrumentor(Opts, Opts.ProfileInstrumentUsePath);
if (Arg *A = Args.getLastArg(OPT_fclang_abi_compat_EQ)) {
Opts.setClangABICompat(CodeGenOptions::ClangABI::Latest);
StringRef Ver = A->getValue();
std::pair<StringRef, StringRef> VerParts = Ver.split('.');
unsigned Major, Minor = 0;
// Check the version number is valid: either 3.x (0 <= x <= 9) or
// y or y.0 (4 <= y <= current version).
if (!VerParts.first.startswith("0") &&
!VerParts.first.getAsInteger(10, Major) &&
3 <= Major && Major <= CLANG_VERSION_MAJOR &&
(Major == 3 ? VerParts.second.size() == 1 &&
!VerParts.second.getAsInteger(10, Minor)
: VerParts.first.size() == Ver.size() ||
VerParts.second == "0")) {
// Got a valid version number.
if (Major == 3 && Minor <= 8)
Opts.setClangABICompat(CodeGenOptions::ClangABI::Ver3_8);
else if (Major <= 4)
Opts.setClangABICompat(CodeGenOptions::ClangABI::Ver4);
} else if (Ver != "latest") {
Diags.Report(diag::err_drv_invalid_value)
<< A->getAsString(Args) << A->getValue();
}
}
Opts.CoverageMapping =
Args.hasFlag(OPT_fcoverage_mapping, OPT_fno_coverage_mapping, false);
Opts.DumpCoverageMapping = Args.hasArg(OPT_dump_coverage_mapping);
Opts.AsmVerbose = Args.hasArg(OPT_masm_verbose);
Opts.PreserveAsmComments = !Args.hasArg(OPT_fno_preserve_as_comments);
Opts.AssumeSaneOperatorNew = !Args.hasArg(OPT_fno_assume_sane_operator_new);
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) || Args.hasArg(OPT_pg));
Opts.DisableFree = Args.hasArg(OPT_disable_free);
Opts.DiscardValueNames = Args.hasArg(OPT_discard_value_names);
Opts.DisableTailCalls = Args.hasArg(OPT_mdisable_tail_calls);
Opts.FloatABI = Args.getLastArgValue(OPT_mfloat_abi);
Opts.LessPreciseFPMAD = Args.hasArg(OPT_cl_mad_enable) ||
Args.hasArg(OPT_cl_unsafe_math_optimizations) ||
Args.hasArg(OPT_cl_fast_relaxed_math);
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) ||
Args.hasArg(OPT_cl_no_signed_zeros) ||
Args.hasArg(OPT_cl_unsafe_math_optimizations) ||
Args.hasArg(OPT_cl_fast_relaxed_math));
Opts.FlushDenorm = Args.hasArg(OPT_cl_denorms_are_zero);
Opts.CorrectlyRoundedDivSqrt =
Args.hasArg(OPT_cl_fp32_correctly_rounded_divide_sqrt);
Opts.ReciprocalMath = Args.hasArg(OPT_freciprocal_math);
Opts.NoTrappingMath = Args.hasArg(OPT_fno_trapping_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.IncrementalLinkerCompatible =
Args.hasArg(OPT_mincremental_linker_compatible);
Opts.PIECopyRelocations =
Args.hasArg(OPT_mpie_copy_relocations);
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.StrictReturn = !Args.hasArg(OPT_fno_strict_return);
Opts.StrictVTablePointers = Args.hasArg(OPT_fstrict_vtable_pointers);
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 = getRelocModel(Args, Diags);
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.NoUseJumpTables = Args.hasArg(OPT_fno_jump_tables);
Opts.ProfileSampleAccurate = Args.hasArg(OPT_fprofile_sample_accurate);
Opts.PrepareForLTO = Args.hasArg(OPT_flto, OPT_flto_EQ);
Opts.EmitSummaryIndex = false;
if (Arg *A = Args.getLastArg(OPT_flto_EQ)) {
StringRef S = A->getValue();
if (S == "thin")
Opts.EmitSummaryIndex = true;
else if (S != "full")
Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << S;
}
Opts.LTOUnit = Args.hasFlag(OPT_flto_unit, OPT_fno_lto_unit, false);
if (Arg *A = Args.getLastArg(OPT_fthinlto_index_EQ)) {
if (IK.getLanguage() != InputKind::LLVM_IR)
Diags.Report(diag::err_drv_argument_only_allowed_with)
<< A->getAsString(Args) << "-x ir";
Opts.ThinLTOIndexFile = Args.getLastArgValue(OPT_fthinlto_index_EQ);
}
Opts.ThinLinkBitcodeFile = Args.getLastArgValue(OPT_fthin_link_bitcode_EQ);
Opts.MSVolatile = Args.hasArg(OPT_fms_volatile);
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.CoverageDataFile = Args.getLastArgValue(OPT_coverage_data_file);
Opts.CoverageNotesFile = Args.getLastArgValue(OPT_coverage_notes_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);
}
}
}
// Handle -fembed-bitcode option.
if (Arg *A = Args.getLastArg(OPT_fembed_bitcode_EQ)) {
StringRef Name = A->getValue();
unsigned Model = llvm::StringSwitch<unsigned>(Name)
.Case("off", CodeGenOptions::Embed_Off)
.Case("all", CodeGenOptions::Embed_All)
.Case("bitcode", CodeGenOptions::Embed_Bitcode)
.Case("marker", CodeGenOptions::Embed_Marker)
.Default(~0U);
if (Model == ~0U) {
Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Name;
Success = false;
} else
Opts.setEmbedBitcode(
static_cast<CodeGenOptions::EmbedBitcodeKind>(Model));
}
// FIXME: For backend options that are not yet recorded as function
// attributes in the IR, keep track of them so we can embed them in a
// separate data section and use them when building the bitcode.
if (Opts.getEmbedBitcode() == CodeGenOptions::Embed_All) {
for (const auto &A : Args) {
// Do not encode output and input.
if (A->getOption().getID() == options::OPT_o ||
A->getOption().getID() == options::OPT_INPUT ||
A->getOption().getID() == options::OPT_x ||
A->getOption().getID() == options::OPT_fembed_bitcode ||
(A->getOption().getGroup().isValid() &&
A->getOption().getGroup().getID() == options::OPT_W_Group))
continue;
ArgStringList ASL;
A->render(Args, ASL);
for (const auto &arg : ASL) {
StringRef ArgStr(arg);
Opts.CmdArgs.insert(Opts.CmdArgs.end(), ArgStr.begin(), ArgStr.end());
// using \00 to seperate each commandline options.
Opts.CmdArgs.push_back('\0');
}
}
}
Opts.PreserveVec3Type = Args.hasArg(OPT_fpreserve_vec3_type);
Opts.InstrumentFunctions = Args.hasArg(OPT_finstrument_functions);
Opts.XRayInstrumentFunctions = Args.hasArg(OPT_fxray_instrument);
Opts.XRayInstructionThreshold =
getLastArgIntValue(Args, OPT_fxray_instruction_threshold_EQ, 200, Diags);
Opts.InstrumentForProfiling = Args.hasArg(OPT_pg);
Opts.CallFEntry = Args.hasArg(OPT_mfentry);
Opts.EmitOpenCLArgMetadata = Args.hasArg(OPT_cl_kernel_arg_info);
if (const Arg *A = Args.getLastArg(OPT_compress_debug_sections,
OPT_compress_debug_sections_EQ)) {
if (A->getOption().getID() == OPT_compress_debug_sections) {
// TODO: be more clever about the compression type auto-detection
Opts.setCompressDebugSections(llvm::DebugCompressionType::GNU);
} else {
auto DCT = llvm::StringSwitch<llvm::DebugCompressionType>(A->getValue())
.Case("none", llvm::DebugCompressionType::None)
.Case("zlib", llvm::DebugCompressionType::Z)
.Case("zlib-gnu", llvm::DebugCompressionType::GNU)
.Default(llvm::DebugCompressionType::None);
Opts.setCompressDebugSections(DCT);
}
}
Opts.RelaxELFRelocations = Args.hasArg(OPT_mrelax_relocations);
Opts.DebugCompilationDir = Args.getLastArgValue(OPT_fdebug_compilation_dir);
for (auto A : Args.filtered(OPT_mlink_bitcode_file, OPT_mlink_cuda_bitcode)) {
CodeGenOptions::BitcodeFileToLink F;
F.Filename = A->getValue();
if (A->getOption().matches(OPT_mlink_cuda_bitcode)) {
F.LinkFlags = llvm::Linker::Flags::LinkOnlyNeeded;
// When linking CUDA bitcode, propagate function attributes so that
// e.g. libdevice gets fast-math attrs if we're building with fast-math.
F.PropagateAttrs = true;
F.Internalize = true;
}
Opts.LinkBitcodeFiles.push_back(F);
}
Opts.SanitizeCoverageType =
getLastArgIntValue(Args, OPT_fsanitize_coverage_type, 0, Diags);
Opts.SanitizeCoverageIndirectCalls =
Args.hasArg(OPT_fsanitize_coverage_indirect_calls);
Opts.SanitizeCoverageTraceBB = Args.hasArg(OPT_fsanitize_coverage_trace_bb);
Opts.SanitizeCoverageTraceCmp = Args.hasArg(OPT_fsanitize_coverage_trace_cmp);
Opts.SanitizeCoverageTraceDiv = Args.hasArg(OPT_fsanitize_coverage_trace_div);
Opts.SanitizeCoverageTraceGep = Args.hasArg(OPT_fsanitize_coverage_trace_gep);
Opts.SanitizeCoverage8bitCounters =
Args.hasArg(OPT_fsanitize_coverage_8bit_counters);
Opts.SanitizeCoverageTracePC = Args.hasArg(OPT_fsanitize_coverage_trace_pc);
Opts.SanitizeCoverageTracePCGuard =
Args.hasArg(OPT_fsanitize_coverage_trace_pc_guard);
Opts.SanitizeCoverageNoPrune = Args.hasArg(OPT_fsanitize_coverage_no_prune);
Opts.SanitizeCoverageInline8bitCounters =
Args.hasArg(OPT_fsanitize_coverage_inline_8bit_counters);
Opts.SanitizeCoveragePCTable = Args.hasArg(OPT_fsanitize_coverage_pc_table);
Opts.SanitizeCoverageStackDepth =
Args.hasArg(OPT_fsanitize_coverage_stack_depth);
Opts.SanitizeMemoryTrackOrigins =
getLastArgIntValue(Args, OPT_fsanitize_memory_track_origins_EQ, 0, Diags);
Opts.SanitizeMemoryUseAfterDtor =
Args.hasArg(OPT_fsanitize_memory_use_after_dtor);
Opts.SanitizeMinimalRuntime = Args.hasArg(OPT_fsanitize_minimal_runtime);
Opts.SanitizeCfiCrossDso = Args.hasArg(OPT_fsanitize_cfi_cross_dso);
Opts.SanitizeStats = Args.hasArg(OPT_fsanitize_stats);
if (Arg *A = Args.getLastArg(OPT_fsanitize_address_use_after_scope,
OPT_fno_sanitize_address_use_after_scope)) {
Opts.SanitizeAddressUseAfterScope =
A->getOption().getID() == OPT_fsanitize_address_use_after_scope;
}
Opts.SanitizeAddressGlobalsDeadStripping =
Args.hasArg(OPT_fsanitize_address_globals_dead_stripping);
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));
}
}
Opts.EmulatedTLS =
Args.hasFlag(OPT_femulated_tls, OPT_fno_emulated_tls, false);
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_fdenormal_fp_math_EQ)) {
StringRef Val = A->getValue();
if (Val == "ieee")
Opts.FPDenormalMode = "ieee";
else if (Val == "preserve-sign")
Opts.FPDenormalMode = "preserve-sign";
else if (Val == "positive-zero")
Opts.FPDenormalMode = "positive-zero";
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);
Opts.LinkerOptions = Args.getAllArgValues(OPT_linker_option);
bool NeedLocTracking = false;
Opts.OptRecordFile = Args.getLastArgValue(OPT_opt_record_file);
if (!Opts.OptRecordFile.empty())
NeedLocTracking = true;
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;
}
Opts.DiagnosticsWithHotness =
Args.hasArg(options::OPT_fdiagnostics_show_hotness);
bool UsingSampleProfile = !Opts.SampleProfileFile.empty();
bool UsingProfile = UsingSampleProfile ||
(Opts.getProfileUse() != CodeGenOptions::ProfileNone);
if (Opts.DiagnosticsWithHotness && !UsingProfile)
Diags.Report(diag::warn_drv_diagnostics_hotness_requires_pgo)
<< "-fdiagnostics-show-hotness";
Opts.DiagnosticsHotnessThreshold = getLastArgUInt64Value(
Args, options::OPT_fdiagnostics_hotness_threshold_EQ, 0);
if (Opts.DiagnosticsHotnessThreshold > 0 && !UsingProfile)
Diags.Report(diag::warn_drv_diagnostics_hotness_requires_pgo)
<< "-fdiagnostics-hotness-threshold=";
// 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 (UsingSampleProfile)
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);
parseSanitizerKinds("-fsanitize-trap=",
Args.getAllArgValues(OPT_fsanitize_trap_EQ), Diags,
Opts.SanitizeTrap);
Opts.CudaGpuBinaryFileNames =
Args.getAllArgValues(OPT_fcuda_include_gpubinary);
Opts.Backchain = Args.hasArg(OPT_mbackchain);
Opts.EmitCheckPathComponentsToStrip = getLastArgIntValue(
Args, OPT_fsanitize_undefined_strip_path_components_EQ, 0, Diags);
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);