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
