CC1: Add -save-stats option
This option behaves in a similar spirit as -save-temps and writes
internal llvm statistics in json format to a file.
Differential Revision: https://reviews.llvm.org/D24820
llvm-svn: 282426
diff --git a/clang/lib/Frontend/CompilerInstance.cpp b/clang/lib/Frontend/CompilerInstance.cpp
index 627134e..67b0c2e 100644
--- a/clang/lib/Frontend/CompilerInstance.cpp
+++ b/clang/lib/Frontend/CompilerInstance.cpp
@@ -858,7 +858,7 @@
if (getFrontendOpts().ShowTimers)
createFrontendTimer();
- if (getFrontendOpts().ShowStats)
+ if (getFrontendOpts().ShowStats || !getFrontendOpts().StatsFile.empty())
llvm::EnableStatistics();
for (const FrontendInputFile &FIF : getFrontendOpts().Inputs) {
@@ -892,9 +892,24 @@
OS << " generated.\n";
}
- if (getFrontendOpts().ShowStats && hasFileManager()) {
- getFileManager().PrintStats();
- OS << "\n";
+ if (getFrontendOpts().ShowStats) {
+ if (hasFileManager()) {
+ getFileManager().PrintStats();
+ OS << '\n';
+ }
+ llvm::PrintStatistics(OS);
+ }
+ StringRef StatsFile = getFrontendOpts().StatsFile;
+ if (!StatsFile.empty()) {
+ std::error_code EC;
+ auto StatS = llvm::make_unique<llvm::raw_fd_ostream>(StatsFile, EC,
+ llvm::sys::fs::F_Text);
+ if (EC) {
+ getDiagnostics().Report(diag::warn_fe_unable_to_open_stats_file)
+ << StatsFile << EC.message();
+ } else {
+ llvm::PrintStatisticsJSON(*StatS);
+ }
}
return !getDiagnostics().getClient()->getNumErrors();