Hi Nico, yes, you are right, current implementation is mostly focused on frontend. Yes, I can impove BE time output after getting feedback like yours one. Do you need detailed info about BE passes times? Btw, did you try -ftime-report option? It could give you detailed info on BE passes bottlenecks, though its implementation is a little bit messy for now (as Aras noted here: http://aras-p.info/blog/2019/01/12/Investigating-compile-times-and-Clang-ftime-report/ ). Thanks, Anton
пт, 12 апр. 2019 г. в 00:22, Nico Weber <tha...@chromium.org>: > I tried using this to see why X86ISelLowering.cpp takes so long to build > on my system. The output json produced by this flag is at > http://s000.tinyupload.com/?file_id=00019982161870973700 > > It looks like this produces lots of useful information for frontend time, > but in this case most time is spent in the backend, where this doesn't > produce very useful output. Are there any plans to improve output for > backend time? > > On Sat, Mar 30, 2019 at 9:38 AM Anton Afanasyev via cfe-commits < > cfe-commits@lists.llvm.org> wrote: > >> Author: anton-afanasyev >> Date: Sat Mar 30 01:42:48 2019 >> New Revision: 357340 >> >> URL: http://llvm.org/viewvc/llvm-project?rev=357340&view=rev >> Log: >> Adds `-ftime-trace` option to clang that produces Chrome >> `chrome://tracing` compatible JSON profiling output dumps. >> >> This change adds hierarchical "time trace" profiling blocks that can be >> visualized in Chrome, in a "flame chart" style. Each profiling block can >> have a "detail" string that for example indicates the file being processed, >> template name being instantiated, function being optimized etc. >> >> This is taken from GitHub PR: >> https://github.com/aras-p/llvm-project-20170507/pull/2 >> >> Patch by Aras Pranckevičius. >> >> Differential Revision: https://reviews.llvm.org/D58675 >> >> Modified: >> cfe/trunk/include/clang/Basic/CodeGenOptions.def >> cfe/trunk/include/clang/Driver/Options.td >> cfe/trunk/include/clang/Frontend/FrontendOptions.h >> cfe/trunk/lib/CodeGen/BackendUtil.cpp >> cfe/trunk/lib/CodeGen/CodeGenModule.cpp >> cfe/trunk/lib/Driver/ToolChains/Clang.cpp >> cfe/trunk/lib/Frontend/CompilerInstance.cpp >> cfe/trunk/lib/Frontend/CompilerInvocation.cpp >> cfe/trunk/lib/Parse/ParseAST.cpp >> cfe/trunk/lib/Parse/ParseDeclCXX.cpp >> cfe/trunk/lib/Parse/ParseTemplate.cpp >> cfe/trunk/lib/Sema/Sema.cpp >> cfe/trunk/lib/Sema/SemaTemplateInstantiate.cpp >> cfe/trunk/lib/Sema/SemaTemplateInstantiateDecl.cpp >> cfe/trunk/lib/Serialization/GlobalModuleIndex.cpp >> cfe/trunk/tools/driver/cc1_main.cpp >> >> Modified: cfe/trunk/include/clang/Basic/CodeGenOptions.def >> URL: >> http://llvm.org/viewvc/llvm-project/cfe/trunk/include/clang/Basic/CodeGenOptions.def?rev=357340&r1=357339&r2=357340&view=diff >> >> ============================================================================== >> --- cfe/trunk/include/clang/Basic/CodeGenOptions.def (original) >> +++ cfe/trunk/include/clang/Basic/CodeGenOptions.def Sat Mar 30 01:42:48 >> 2019 >> @@ -224,6 +224,7 @@ CODEGENOPT(FineGrainedBitfieldAccesses, >> CODEGENOPT(StrictEnums , 1, 0) ///< Optimize based on strict enum >> definition. >> CODEGENOPT(StrictVTablePointers, 1, 0) ///< Optimize based on the strict >> vtable pointers >> CODEGENOPT(TimePasses , 1, 0) ///< Set when -ftime-report is >> enabled. >> +CODEGENOPT(TimeTrace , 1, 0) ///< Set when -ftime-trace is >> enabled. >> CODEGENOPT(UnrollLoops , 1, 0) ///< Control whether loops are >> unrolled. >> CODEGENOPT(RerollLoops , 1, 0) ///< Control whether loops are >> rerolled. >> CODEGENOPT(NoUseJumpTables , 1, 0) ///< Set when -fno-jump-tables is >> enabled. >> >> Modified: cfe/trunk/include/clang/Driver/Options.td >> URL: >> http://llvm.org/viewvc/llvm-project/cfe/trunk/include/clang/Driver/Options.td?rev=357340&r1=357339&r2=357340&view=diff >> >> ============================================================================== >> --- cfe/trunk/include/clang/Driver/Options.td (original) >> +++ cfe/trunk/include/clang/Driver/Options.td Sat Mar 30 01:42:48 2019 >> @@ -1745,6 +1745,7 @@ def Wframe_larger_than_EQ : Joined<["-"] >> def : Flag<["-"], "fterminated-vtables">, Alias<fapple_kext>; >> def fthreadsafe_statics : Flag<["-"], "fthreadsafe-statics">, >> Group<f_Group>; >> def ftime_report : Flag<["-"], "ftime-report">, Group<f_Group>, >> Flags<[CC1Option]>; >> +def ftime_trace : Flag<["-"], "ftime-trace">, Group<f_Group>, >> Flags<[CC1Option]>; >> def ftlsmodel_EQ : Joined<["-"], "ftls-model=">, Group<f_Group>, >> Flags<[CC1Option]>; >> def ftrapv : Flag<["-"], "ftrapv">, Group<f_Group>, Flags<[CC1Option]>, >> HelpText<"Trap on integer overflow">; >> >> Modified: cfe/trunk/include/clang/Frontend/FrontendOptions.h >> URL: >> http://llvm.org/viewvc/llvm-project/cfe/trunk/include/clang/Frontend/FrontendOptions.h?rev=357340&r1=357339&r2=357340&view=diff >> >> ============================================================================== >> --- cfe/trunk/include/clang/Frontend/FrontendOptions.h (original) >> +++ cfe/trunk/include/clang/Frontend/FrontendOptions.h Sat Mar 30 >> 01:42:48 2019 >> @@ -256,6 +256,9 @@ public: >> /// Show timers for individual actions. >> unsigned ShowTimers : 1; >> >> + /// Output time trace profile. >> + unsigned TimeTrace : 1; >> + >> /// Show the -version text. >> unsigned ShowVersion : 1; >> >> @@ -437,13 +440,14 @@ public: >> public: >> FrontendOptions() >> : DisableFree(false), RelocatablePCH(false), ShowHelp(false), >> - ShowStats(false), ShowTimers(false), ShowVersion(false), >> - FixWhatYouCan(false), FixOnlyWarnings(false), >> FixAndRecompile(false), >> - FixToTemporaries(false), ARCMTMigrateEmitARCErrors(false), >> - SkipFunctionBodies(false), UseGlobalModuleIndex(true), >> - GenerateGlobalModuleIndex(true), ASTDumpDecls(false), >> - ASTDumpLookups(false), BuildingImplicitModule(false), >> - ModulesEmbedAllFiles(false), IncludeTimestamps(true) {} >> + ShowStats(false), ShowTimers(false), TimeTrace(false), >> + ShowVersion(false), FixWhatYouCan(false), FixOnlyWarnings(false), >> + FixAndRecompile(false), FixToTemporaries(false), >> + ARCMTMigrateEmitARCErrors(false), SkipFunctionBodies(false), >> + UseGlobalModuleIndex(true), GenerateGlobalModuleIndex(true), >> + ASTDumpDecls(false), ASTDumpLookups(false), >> + BuildingImplicitModule(false), ModulesEmbedAllFiles(false), >> + IncludeTimestamps(true) {} >> >> /// getInputKindForExtension - Return the appropriate input kind for a >> file >> /// extension. For example, "c" would return InputKind::C. >> >> Modified: cfe/trunk/lib/CodeGen/BackendUtil.cpp >> URL: >> http://llvm.org/viewvc/llvm-project/cfe/trunk/lib/CodeGen/BackendUtil.cpp?rev=357340&r1=357339&r2=357340&view=diff >> >> ============================================================================== >> --- cfe/trunk/lib/CodeGen/BackendUtil.cpp (original) >> +++ cfe/trunk/lib/CodeGen/BackendUtil.cpp Sat Mar 30 01:42:48 2019 >> @@ -42,6 +42,7 @@ >> #include "llvm/Support/MemoryBuffer.h" >> #include "llvm/Support/PrettyStackTrace.h" >> #include "llvm/Support/TargetRegistry.h" >> +#include "llvm/Support/TimeProfiler.h" >> #include "llvm/Support/Timer.h" >> #include "llvm/Support/raw_ostream.h" >> #include "llvm/Target/TargetMachine.h" >> @@ -1382,6 +1383,9 @@ void clang::EmitBackendOutput(Diagnostic >> const llvm::DataLayout &TDesc, Module *M, >> BackendAction Action, >> std::unique_ptr<raw_pwrite_stream> OS) { >> + >> + llvm::TimeTraceScope TimeScope("Backend", StringRef("")); >> + >> std::unique_ptr<llvm::Module> EmptyModule; >> if (!CGOpts.ThinLTOIndexFile.empty()) { >> // If we are performing a ThinLTO importing compile, load the >> function index >> >> Modified: cfe/trunk/lib/CodeGen/CodeGenModule.cpp >> URL: >> http://llvm.org/viewvc/llvm-project/cfe/trunk/lib/CodeGen/CodeGenModule.cpp?rev=357340&r1=357339&r2=357340&view=diff >> >> ============================================================================== >> --- cfe/trunk/lib/CodeGen/CodeGenModule.cpp (original) >> +++ cfe/trunk/lib/CodeGen/CodeGenModule.cpp Sat Mar 30 01:42:48 2019 >> @@ -58,6 +58,7 @@ >> #include "llvm/Support/ConvertUTF.h" >> #include "llvm/Support/ErrorHandling.h" >> #include "llvm/Support/MD5.h" >> +#include "llvm/Support/TimeProfiler.h" >> >> using namespace clang; >> using namespace CodeGen; >> @@ -2482,6 +2483,9 @@ void CodeGenModule::EmitGlobalDefinition >> if (!shouldEmitFunction(GD)) >> return; >> >> + llvm::TimeTraceScope TimeScope( >> + "CodeGen Function", [&]() { return >> FD->getQualifiedNameAsString(); }); >> + >> if (const auto *Method = dyn_cast<CXXMethodDecl>(D)) { >> // Make sure to emit the definition(s) before we emit the thunks. >> // This is necessary for the generation of certain thunks. >> >> Modified: cfe/trunk/lib/Driver/ToolChains/Clang.cpp >> URL: >> http://llvm.org/viewvc/llvm-project/cfe/trunk/lib/Driver/ToolChains/Clang.cpp?rev=357340&r1=357339&r2=357340&view=diff >> >> ============================================================================== >> --- cfe/trunk/lib/Driver/ToolChains/Clang.cpp (original) >> +++ cfe/trunk/lib/Driver/ToolChains/Clang.cpp Sat Mar 30 01:42:48 2019 >> @@ -4548,6 +4548,7 @@ void Clang::ConstructJob(Compilation &C, >> Args.AddLastArg(CmdArgs, >> options::OPT_fdiagnostics_print_source_range_info); >> Args.AddLastArg(CmdArgs, options::OPT_fdiagnostics_parseable_fixits); >> Args.AddLastArg(CmdArgs, options::OPT_ftime_report); >> + Args.AddLastArg(CmdArgs, options::OPT_ftime_trace); >> Args.AddLastArg(CmdArgs, options::OPT_ftrapv); >> Args.AddLastArg(CmdArgs, options::OPT_malign_double); >> >> >> Modified: cfe/trunk/lib/Frontend/CompilerInstance.cpp >> URL: >> http://llvm.org/viewvc/llvm-project/cfe/trunk/lib/Frontend/CompilerInstance.cpp?rev=357340&r1=357339&r2=357340&view=diff >> >> ============================================================================== >> --- cfe/trunk/lib/Frontend/CompilerInstance.cpp (original) >> +++ cfe/trunk/lib/Frontend/CompilerInstance.cpp Sat Mar 30 01:42:48 2019 >> @@ -46,6 +46,7 @@ >> #include "llvm/Support/Path.h" >> #include "llvm/Support/Program.h" >> #include "llvm/Support/Signals.h" >> +#include "llvm/Support/TimeProfiler.h" >> #include "llvm/Support/Timer.h" >> #include "llvm/Support/raw_ostream.h" >> #include <sys/stat.h> >> @@ -1025,6 +1026,8 @@ compileModuleImpl(CompilerInstance &Impo >> [](CompilerInstance &) {}, >> llvm::function_ref<void(CompilerInstance &)> >> PostBuildStep = >> [](CompilerInstance &) {}) { >> + llvm::TimeTraceScope TimeScope("Module Compile", ModuleName); >> + >> // Construct a compiler invocation for creating this module. >> auto Invocation = >> >> std::make_shared<CompilerInvocation>(ImportingInstance.getInvocation()); >> @@ -1701,6 +1704,7 @@ CompilerInstance::loadModule(SourceLocat >> Timer.init("loading." + ModuleFileName, "Loading " + >> ModuleFileName, >> *FrontendTimerGroup); >> llvm::TimeRegion TimeLoading(FrontendTimerGroup ? &Timer : nullptr); >> + llvm::TimeTraceScope TimeScope("Module Load", ModuleName); >> >> // Try to load the module file. If we are not trying to load from the >> // module cache, we don't know how to rebuild modules. >> >> Modified: cfe/trunk/lib/Frontend/CompilerInvocation.cpp >> URL: >> http://llvm.org/viewvc/llvm-project/cfe/trunk/lib/Frontend/CompilerInvocation.cpp?rev=357340&r1=357339&r2=357340&view=diff >> >> ============================================================================== >> --- cfe/trunk/lib/Frontend/CompilerInvocation.cpp (original) >> +++ cfe/trunk/lib/Frontend/CompilerInvocation.cpp Sat Mar 30 01:42:48 2019 >> @@ -1717,6 +1717,7 @@ static InputKind ParseFrontendArgs(Front >> Opts.ShowHelp = Args.hasArg(OPT_help); >> Opts.ShowStats = Args.hasArg(OPT_print_stats); >> Opts.ShowTimers = Args.hasArg(OPT_ftime_report); >> + Opts.TimeTrace = Args.hasArg(OPT_ftime_trace); >> Opts.ShowVersion = Args.hasArg(OPT_version); >> Opts.ASTMergeFiles = Args.getAllArgValues(OPT_ast_merge); >> Opts.LLVMArgs = Args.getAllArgValues(OPT_mllvm); >> >> Modified: cfe/trunk/lib/Parse/ParseAST.cpp >> URL: >> http://llvm.org/viewvc/llvm-project/cfe/trunk/lib/Parse/ParseAST.cpp?rev=357340&r1=357339&r2=357340&view=diff >> >> ============================================================================== >> --- cfe/trunk/lib/Parse/ParseAST.cpp (original) >> +++ cfe/trunk/lib/Parse/ParseAST.cpp Sat Mar 30 01:42:48 2019 >> @@ -22,6 +22,7 @@ >> #include "clang/Sema/SemaConsumer.h" >> #include "clang/Sema/TemplateInstCallback.h" >> #include "llvm/Support/CrashRecoveryContext.h" >> +#include "llvm/Support/TimeProfiler.h" >> #include <cstdio> >> #include <memory> >> >> @@ -150,6 +151,7 @@ void clang::ParseAST(Sema &S, bool Print >> bool HaveLexer = S.getPreprocessor().getCurrentLexer(); >> >> if (HaveLexer) { >> + llvm::TimeTraceScope TimeScope("Frontend", StringRef("")); >> P.Initialize(); >> Parser::DeclGroupPtrTy ADecl; >> for (bool AtEOF = P.ParseFirstTopLevelDecl(ADecl); !AtEOF; >> >> Modified: cfe/trunk/lib/Parse/ParseDeclCXX.cpp >> URL: >> http://llvm.org/viewvc/llvm-project/cfe/trunk/lib/Parse/ParseDeclCXX.cpp?rev=357340&r1=357339&r2=357340&view=diff >> >> ============================================================================== >> --- cfe/trunk/lib/Parse/ParseDeclCXX.cpp (original) >> +++ cfe/trunk/lib/Parse/ParseDeclCXX.cpp Sat Mar 30 01:42:48 2019 >> @@ -24,6 +24,7 @@ >> #include "clang/Sema/ParsedTemplate.h" >> #include "clang/Sema/Scope.h" >> #include "llvm/ADT/SmallString.h" >> +#include "llvm/Support/TimeProfiler.h" >> >> using namespace clang; >> >> @@ -3114,6 +3115,12 @@ void Parser::ParseCXXMemberSpecification >> TagType == DeclSpec::TST_union || >> TagType == DeclSpec::TST_class) && "Invalid TagType!"); >> >> + llvm::TimeTraceScope TimeScope("ParseClass", [&]() { >> + if (auto *TD = dyn_cast_or_null<NamedDecl>(TagDecl)) >> + return TD->getQualifiedNameAsString(); >> + return std::string("<anonymous>"); >> + }); >> + >> PrettyDeclStackTraceEntry CrashInfo(Actions.Context, TagDecl, >> RecordLoc, >> "parsing struct/union/class body"); >> >> >> Modified: cfe/trunk/lib/Parse/ParseTemplate.cpp >> URL: >> http://llvm.org/viewvc/llvm-project/cfe/trunk/lib/Parse/ParseTemplate.cpp?rev=357340&r1=357339&r2=357340&view=diff >> >> ============================================================================== >> --- cfe/trunk/lib/Parse/ParseTemplate.cpp (original) >> +++ cfe/trunk/lib/Parse/ParseTemplate.cpp Sat Mar 30 01:42:48 2019 >> @@ -18,6 +18,7 @@ >> #include "clang/Sema/DeclSpec.h" >> #include "clang/Sema/ParsedTemplate.h" >> #include "clang/Sema/Scope.h" >> +#include "llvm/Support/TimeProfiler.h" >> using namespace clang; >> >> /// Parse a template declaration, explicit instantiation, or >> @@ -231,6 +232,12 @@ Decl *Parser::ParseSingleDeclarationAfte >> return nullptr; >> } >> >> + llvm::TimeTraceScope TimeScope("ParseTemplate", [&]() { >> + return DeclaratorInfo.getIdentifier() != nullptr >> + ? DeclaratorInfo.getIdentifier()->getName() >> + : "<unknown>"; >> + }); >> + >> LateParsedAttrList LateParsedAttrs(true); >> if (DeclaratorInfo.isFunctionDeclarator()) >> MaybeParseGNUAttributes(DeclaratorInfo, &LateParsedAttrs); >> >> Modified: cfe/trunk/lib/Sema/Sema.cpp >> URL: >> http://llvm.org/viewvc/llvm-project/cfe/trunk/lib/Sema/Sema.cpp?rev=357340&r1=357339&r2=357340&view=diff >> >> ============================================================================== >> --- cfe/trunk/lib/Sema/Sema.cpp (original) >> +++ cfe/trunk/lib/Sema/Sema.cpp Sat Mar 30 01:42:48 2019 >> @@ -39,6 +39,8 @@ >> #include "clang/Sema/TemplateInstCallback.h" >> #include "llvm/ADT/DenseMap.h" >> #include "llvm/ADT/SmallSet.h" >> +#include "llvm/Support/TimeProfiler.h" >> + >> using namespace clang; >> using namespace sema; >> >> @@ -92,6 +94,12 @@ public: >> SourceManager &SM = S->getSourceManager(); >> SourceLocation IncludeLoc = SM.getIncludeLoc(SM.getFileID(Loc)); >> if (IncludeLoc.isValid()) { >> + if (llvm::timeTraceProfilerEnabled()) { >> + const FileEntry *FE = SM.getFileEntryForID(SM.getFileID(Loc)); >> + llvm::timeTraceProfilerBegin( >> + "Source", FE != nullptr ? FE->getName() : >> StringRef("<unknown>")); >> + } >> + >> IncludeStack.push_back(IncludeLoc); >> S->DiagnoseNonDefaultPragmaPack( >> Sema::PragmaPackDiagnoseKind::NonDefaultStateAtInclude, >> IncludeLoc); >> @@ -99,10 +107,14 @@ public: >> break; >> } >> case ExitFile: >> - if (!IncludeStack.empty()) >> + if (!IncludeStack.empty()) { >> + if (llvm::timeTraceProfilerEnabled()) >> + llvm::timeTraceProfilerEnd(); >> + >> S->DiagnoseNonDefaultPragmaPack( >> Sema::PragmaPackDiagnoseKind::ChangedStateAtExit, >> IncludeStack.pop_back_val()); >> + } >> break; >> default: >> break; >> @@ -914,7 +926,11 @@ void Sema::ActOnEndOfTranslationUnit() { >> Pending.begin(), Pending.end()); >> } >> >> - PerformPendingInstantiations(); >> + { >> + llvm::TimeTraceScope TimeScope("PerformPendingInstantiations", >> + StringRef("")); >> + PerformPendingInstantiations(); >> + } >> >> assert(LateParsedInstantiations.empty() && >> "end of TU template instantiation should not create more " >> >> Modified: cfe/trunk/lib/Sema/SemaTemplateInstantiate.cpp >> URL: >> http://llvm.org/viewvc/llvm-project/cfe/trunk/lib/Sema/SemaTemplateInstantiate.cpp?rev=357340&r1=357339&r2=357340&view=diff >> >> ============================================================================== >> --- cfe/trunk/lib/Sema/SemaTemplateInstantiate.cpp (original) >> +++ cfe/trunk/lib/Sema/SemaTemplateInstantiate.cpp Sat Mar 30 01:42:48 >> 2019 >> @@ -25,6 +25,7 @@ >> #include "clang/Sema/Template.h" >> #include "clang/Sema/TemplateDeduction.h" >> #include "clang/Sema/TemplateInstCallback.h" >> +#include "llvm/Support/TimeProfiler.h" >> >> using namespace clang; >> using namespace sema; >> @@ -2008,6 +2009,11 @@ Sema::InstantiateClass(SourceLocation Po >> >> Instantiation->getInstantiatedFromMemberClass(), >> Pattern, PatternDef, TSK, Complain)) >> return true; >> + >> + llvm::TimeTraceScope TimeScope("InstantiateClass", [&]() { >> + return Instantiation->getQualifiedNameAsString(); >> + }); >> + >> Pattern = PatternDef; >> >> // Record the point of instantiation. >> >> Modified: cfe/trunk/lib/Sema/SemaTemplateInstantiateDecl.cpp >> URL: >> http://llvm.org/viewvc/llvm-project/cfe/trunk/lib/Sema/SemaTemplateInstantiateDecl.cpp?rev=357340&r1=357339&r2=357340&view=diff >> >> ============================================================================== >> --- cfe/trunk/lib/Sema/SemaTemplateInstantiateDecl.cpp (original) >> +++ cfe/trunk/lib/Sema/SemaTemplateInstantiateDecl.cpp Sat Mar 30 >> 01:42:48 2019 >> @@ -23,6 +23,7 @@ >> #include "clang/Sema/Lookup.h" >> #include "clang/Sema/Template.h" >> #include "clang/Sema/TemplateInstCallback.h" >> +#include "llvm/Support/TimeProfiler.h" >> >> using namespace clang; >> >> @@ -4124,6 +4125,10 @@ void Sema::InstantiateFunctionDefinition >> return; >> } >> >> + llvm::TimeTraceScope TimeScope("InstantiateFunction", [&]() { >> + return Function->getQualifiedNameAsString(); >> + }); >> + >> // If we're performing recursive template instantiation, create our own >> // queue of pending implicit instantiations that we will instantiate >> later, >> // while we're still within our own instantiation context. >> >> Modified: cfe/trunk/lib/Serialization/GlobalModuleIndex.cpp >> URL: >> http://llvm.org/viewvc/llvm-project/cfe/trunk/lib/Serialization/GlobalModuleIndex.cpp?rev=357340&r1=357339&r2=357340&view=diff >> >> ============================================================================== >> --- cfe/trunk/lib/Serialization/GlobalModuleIndex.cpp (original) >> +++ cfe/trunk/lib/Serialization/GlobalModuleIndex.cpp Sat Mar 30 01:42:48 >> 2019 >> @@ -10,6 +10,7 @@ >> // >> >> >> //===----------------------------------------------------------------------===// >> >> + >> #include "ASTReaderInternals.h" >> #include "clang/Basic/FileManager.h" >> #include "clang/Lex/HeaderSearch.h" >> @@ -28,6 +29,7 @@ >> #include "llvm/Support/MemoryBuffer.h" >> #include "llvm/Support/OnDiskHashTable.h" >> #include "llvm/Support/Path.h" >> +#include "llvm/Support/TimeProfiler.h" >> #include <cstdio> >> using namespace clang; >> using namespace serialization; >> @@ -126,6 +128,7 @@ GlobalModuleIndex::GlobalModuleIndex(std >> llvm::BitstreamCursor Cursor) >> : Buffer(std::move(Buffer)), IdentifierIndex(), >> NumIdentifierLookups(), >> NumIdentifierLookupHits() { >> + llvm::TimeTraceScope TimeScope("Module LoadIndex", StringRef("")); >> // Read the global index. >> bool InGlobalIndexBlock = false; >> bool Done = false; >> @@ -739,6 +742,7 @@ bool GlobalModuleIndexBuilder::writeInde >> } >> >> using namespace llvm; >> + llvm::TimeTraceScope TimeScope("Module WriteIndex", StringRef("")); >> >> // Emit the file header. >> Stream.Emit((unsigned)'B', 8); >> >> Modified: cfe/trunk/tools/driver/cc1_main.cpp >> URL: >> http://llvm.org/viewvc/llvm-project/cfe/trunk/tools/driver/cc1_main.cpp?rev=357340&r1=357339&r2=357340&view=diff >> >> ============================================================================== >> --- cfe/trunk/tools/driver/cc1_main.cpp (original) >> +++ cfe/trunk/tools/driver/cc1_main.cpp Sat Mar 30 01:42:48 2019 >> @@ -34,8 +34,10 @@ >> #include "llvm/Support/Compiler.h" >> #include "llvm/Support/ErrorHandling.h" >> #include "llvm/Support/ManagedStatic.h" >> +#include "llvm/Support/Path.h" >> #include "llvm/Support/Signals.h" >> #include "llvm/Support/TargetSelect.h" >> +#include "llvm/Support/TimeProfiler.h" >> #include "llvm/Support/Timer.h" >> #include "llvm/Support/raw_ostream.h" >> #include <cstdio> >> @@ -194,6 +196,9 @@ int cc1_main(ArrayRef<const char *> Argv >> bool Success = CompilerInvocation::CreateFromArgs( >> Clang->getInvocation(), Argv.begin(), Argv.end(), Diags); >> >> + if (Clang->getFrontendOpts().TimeTrace) >> + llvm::timeTraceProfilerInitialize(); >> + >> // Infer the builtin include path if unspecified. >> if (Clang->getHeaderSearchOpts().UseBuiltinIncludes && >> Clang->getHeaderSearchOpts().ResourceDir.empty()) >> @@ -215,12 +220,29 @@ int cc1_main(ArrayRef<const char *> Argv >> return 1; >> >> // Execute the frontend actions. >> - Success = ExecuteCompilerInvocation(Clang.get()); >> + { >> + llvm::TimeTraceScope TimeScope("ExecuteCompiler", StringRef("")); >> + Success = ExecuteCompilerInvocation(Clang.get()); >> + } >> >> // If any timers were active but haven't been destroyed yet, print >> their >> // results now. This happens in -disable-free mode. >> llvm::TimerGroup::printAll(llvm::errs()); >> >> + if (llvm::timeTraceProfilerEnabled()) { >> + SmallString<128> Path(Clang->getFrontendOpts().OutputFile); >> + llvm::sys::path::replace_extension(Path, "json"); >> + auto profilerOutput = >> + Clang->createOutputFile(Path.str(), >> + /*Binary=*/false, >> + /*RemoveFileOnSignal=*/false, "", >> + /*Extension=*/"json", >> + /*useTemporary=*/false); >> + >> + llvm::timeTraceProfilerWrite(profilerOutput); >> + llvm::timeTraceProfilerCleanup(); >> + } >> + >> // Our error handler depends on the Diagnostics object, which we're >> // potentially about to delete. Uninstall the handler now so that any >> // later errors use the default handling behavior instead. >> >> >> _______________________________________________ >> cfe-commits mailing list >> cfe-commits@lists.llvm.org >> https://lists.llvm.org/cgi-bin/mailman/listinfo/cfe-commits >> >
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