Expose -mllvm -accurate-sample-profile to clang.
Summary: With accurate sample profile, we can do more aggressive size optimization. For some size-critical application, this can reduce the text size by 20%
Reviewers: davidxl, rsmith
Reviewed By: davidxl, rsmith
Subscribers: mehdi_amini, eraman, sanjoy, cfe-commits
Differential Revision: https://reviews.llvm.org/D37091
llvm-svn: 311707
diff --git a/clang/lib/Frontend/CompilerInvocation.cpp b/clang/lib/Frontend/CompilerInvocation.cpp
index 24a08e8..aea3af9 100644
--- a/clang/lib/Frontend/CompilerInvocation.cpp
+++ b/clang/lib/Frontend/CompilerInvocation.cpp
@@ -652,6 +652,8 @@
Opts.NoUseJumpTables = Args.hasArg(OPT_fno_jump_tables);
+ Opts.ProfileSampleAccurate = Args.hasArg(OPT_fprofile_sample_accurate);
+
Opts.PrepareForLTO = Args.hasArg(OPT_flto, OPT_flto_EQ);
Opts.EmitSummaryIndex = false;
if (Arg *A = Args.getLastArg(OPT_flto_EQ)) {