Add support for -fno-auto-profile and -fno-profile-sample-use
Summary: We need to be able to disable samplepgo for specific files by supporting -fno-auto-profile and -fno-profile-sample-use
Reviewers: davidxl, dnovillo, echristo
Reviewed By: echristo
Subscribers: echristo, cfe-commits
Differential Revision: https://reviews.llvm.org/D31213
llvm-svn: 298446
diff --git a/clang/lib/Driver/ToolChains/CommonArgs.cpp b/clang/lib/Driver/ToolChains/CommonArgs.cpp
index 48a2cf0..afe6be7 100644
--- a/clang/lib/Driver/ToolChains/CommonArgs.cpp
+++ b/clang/lib/Driver/ToolChains/CommonArgs.cpp
@@ -407,7 +407,7 @@
CmdArgs.push_back("-plugin-opt=-data-sections");
}
- if (Arg *A = Args.getLastArg(options::OPT_fprofile_sample_use_EQ)) {
+ if (Arg *A = getLastProfileSampleUseArg(Args)) {
StringRef FName = A->getValue();
if (!llvm::sys::fs::exists(FName))
D.Diag(diag::err_drv_no_such_file) << FName;
@@ -673,6 +673,22 @@
return ProfileUseArg;
}
+Arg *tools::getLastProfileSampleUseArg(const ArgList &Args) {
+ auto *ProfileSampleUseArg = Args.getLastArg(
+ options::OPT_fprofile_sample_use, options::OPT_fprofile_sample_use_EQ,
+ options::OPT_fauto_profile, options::OPT_fauto_profile_EQ,
+ options::OPT_fno_profile_sample_use, options::OPT_fno_auto_profile);
+
+ if (ProfileSampleUseArg &&
+ (ProfileSampleUseArg->getOption().matches(
+ options::OPT_fno_profile_sample_use) ||
+ ProfileSampleUseArg->getOption().matches(options::OPT_fno_auto_profile)))
+ return nullptr;
+
+ return Args.getLastArg(options::OPT_fprofile_sample_use_EQ,
+ options::OPT_fauto_profile_EQ);
+}
+
/// Parses the various -fpic/-fPIC/-fpie/-fPIE arguments. Then,
/// smooshes them together with platform defaults, to decide whether
/// this compile should be using PIC mode or not. Returns a tuple of