r357340 - Adds `-ftime-trace` option to clang that produces Chrome `chrome://tracing` compatible JSON profiling output dumps.
Anton Afanasyev via cfe-commits
cfe-commits at lists.llvm.org
Sat Mar 30 01:42:48 PDT 2019
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.
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