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| author | Dehao Chen <dehao@google.com> | 2017-02-21 20:36:21 +0000 |
|---|---|---|
| committer | Dehao Chen <dehao@google.com> | 2017-02-21 20:36:21 +0000 |
| commit | 7810d4fbd0423d98e3a9dd9b8b10a5aa1379b684 (patch) | |
| tree | 01e355160b8fe07543e76b76b12c00e044d811f0 /clang/lib/CodeGen/BackendUtil.cpp | |
| parent | 9227e108eb8f5cf4ed9d7b2591daa53e95f9aa6c (diff) | |
| download | llvm-7810d4fbd0423d98e3a9dd9b8b10a5aa1379b684.zip llvm-7810d4fbd0423d98e3a9dd9b8b10a5aa1379b684.tar.gz llvm-7810d4fbd0423d98e3a9dd9b8b10a5aa1379b684.tar.bz2 | |
Only enable AddDiscriminator pass when -fdebug-info-for-profiling is true
Summary: AddDiscriminator pass is only useful for sample pgo. This patch restricts AddDiscriminator to -fdebug-info-for-profiling so that it does not introduce unecessary debug size increases for non-sample-pgo builds.
Reviewers: dblaikie, aprantl
Reviewed By: dblaikie
Subscribers: cfe-commits
Differential Revision: https://reviews.llvm.org/D30220
llvm-svn: 295764
Diffstat (limited to 'clang/lib/CodeGen/BackendUtil.cpp')
| -rw-r--r-- | clang/lib/CodeGen/BackendUtil.cpp | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/clang/lib/CodeGen/BackendUtil.cpp b/clang/lib/CodeGen/BackendUtil.cpp index a1ec52a..f0e0b71 100644 --- a/clang/lib/CodeGen/BackendUtil.cpp +++ b/clang/lib/CodeGen/BackendUtil.cpp @@ -339,8 +339,10 @@ void EmitAssemblyHelper::CreatePasses(legacy::PassManager &MPM, if (TM) TM->adjustPassManager(PMBuilder); - PMBuilder.addExtension(PassManagerBuilder::EP_EarlyAsPossible, - addAddDiscriminatorsPass); + if (CodeGenOpts.DebugInfoForProfiling || + !CodeGenOpts.SampleProfileFile.empty()) + PMBuilder.addExtension(PassManagerBuilder::EP_EarlyAsPossible, + addAddDiscriminatorsPass); // In ObjC ARC mode, add the main ARC optimization passes. if (LangOpts.ObjCAutoRefCount) { |