From d880de2d19d46f7cfea7aa593602458440bc1e8d Mon Sep 17 00:00:00 2001 From: Anton Afanasyev Date: Sat, 30 Mar 2019 08:42:48 +0000 Subject: Adds `-ftime-trace` option to clang that produces Chrome `chrome://tracing` compatible JSON profiling output dumps. MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit 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 llvm-svn: 357340 --- clang/lib/CodeGen/CodeGenModule.cpp | 4 ++++ 1 file changed, 4 insertions(+) (limited to 'clang/lib/CodeGen/CodeGenModule.cpp') diff --git a/clang/lib/CodeGen/CodeGenModule.cpp b/clang/lib/CodeGen/CodeGenModule.cpp index 91f162820cb..1a2e420233e 100644 --- a/clang/lib/CodeGen/CodeGenModule.cpp +++ b/clang/lib/CodeGen/CodeGenModule.cpp @@ -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(GlobalDecl GD, llvm::GlobalValue *GV) { if (!shouldEmitFunction(GD)) return; + llvm::TimeTraceScope TimeScope( + "CodeGen Function", [&]() { return FD->getQualifiedNameAsString(); }); + if (const auto *Method = dyn_cast(D)) { // Make sure to emit the definition(s) before we emit the thunks. // This is necessary for the generation of certain thunks. -- cgit v1.2.3