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| author | Brian Gesiak <modocache@gmail.com> | 2017-07-01 04:44:38 +0000 |
|---|---|---|
| committer | Brian Gesiak <modocache@gmail.com> | 2017-07-01 04:44:38 +0000 |
| commit | 65139b8e3f4c84793ebd60966a1c6f18cef29ca4 (patch) | |
| tree | 115d00d55df0fbf391c5dfbc1aa7d92be52db36c /lib/CodeGen | |
| parent | 481160d03b45795911edb42471f199d35db7de08 (diff) | |
[Driver] Add -fdiagnostics-hotness-threshold
Summary:
Depends on https://reviews.llvm.org/D34867.
Add a Clang frontend option to enable optimization remark hotness
thresholds, which were added to LLVM in https://reviews.llvm.org/D34867.
This prevents diagnostics that do not meet a minimum hotness
threshold from being output. When generating optimization remarks for large
codebases with a ton of cold code paths, this option can be used
to limit the optimization remark output at a reasonable size.
Discussion of this change can be read here:
http://lists.llvm.org/pipermail/llvm-dev/2017-June/114377.html
Reviewers: anemet, davidxl, hfinkel
Reviewed By: anemet
Subscribers: fhahn, cfe-commits
Differential Revision: https://reviews.llvm.org/D34868
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@306945 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/CodeGen')
| -rw-r--r-- | lib/CodeGen/CodeGenAction.cpp | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/lib/CodeGen/CodeGenAction.cpp b/lib/CodeGen/CodeGenAction.cpp index ba033d9413..4f03de5514 100644 --- a/lib/CodeGen/CodeGenAction.cpp +++ b/lib/CodeGen/CodeGenAction.cpp @@ -229,6 +229,9 @@ namespace clang { void *OldDiagnosticContext = Ctx.getDiagnosticContext(); Ctx.setDiagnosticHandler(DiagnosticHandler, this); Ctx.setDiagnosticsHotnessRequested(CodeGenOpts.DiagnosticsWithHotness); + if (CodeGenOpts.DiagnosticsHotnessThreshold != 0) + Ctx.setDiagnosticsHotnessThreshold( + CodeGenOpts.DiagnosticsHotnessThreshold); std::unique_ptr<llvm::tool_output_file> OptRecordFile; if (!CodeGenOpts.OptRecordFile.empty()) { |