[PGO] Change profile use cc1 option to handle IR level profiles

This patch changes cc1 option for PGO profile use from
-fprofile-instr-use=<path> to -fprofile-instrument-use-path=<path>.
-fprofile-instr-use=<path> is now a driver only option.

In addition to decouple the cc1 option from the driver level option, this patch
also enables IR level profile use. cc1 option handling now reads the profile
header and sets CodeGenOpt ProfileUse (valid values are {None, Clang, LLVM}
-- this is a common enum for -fprofile-instrument={}, for the profile
instrumentation), and invoke the pipeline to enable the respective PGO use pass.

Reviewers: silvas, davidxl

Differential Revision: http://reviews.llvm.org/D17737

llvm-svn: 262515

1 files changed, 4 insertions, 4 deletions

diff --git a/clang/lib/CodeGen/CodeGenModule.cpp b/clang/lib/CodeGen/CodeGenModule.cpp
index cf9e29d46b7..7df90346571 100644
--- a/clang/lib/CodeGen/CodeGenModule.cpp
+++ b/clang/lib/CodeGen/CodeGenModule.cpp
@@ -149,13 +149,13 @@ CodeGenModule::CodeGenModule(ASTContext &C, const HeaderSearchOptions &HSO,
   if (C.getLangOpts().ObjC1)
     ObjCData = new ObjCEntrypoints();
 
-  if (!CodeGenOpts.InstrProfileInput.empty()) {
-    auto ReaderOrErr =
-        llvm::IndexedInstrProfReader::create(CodeGenOpts.InstrProfileInput);
+  if (CodeGenOpts.hasProfileClangUse()) {
+    auto ReaderOrErr = llvm::IndexedInstrProfReader::create(
+        CodeGenOpts.ProfileInstrumentUsePath);
     if (std::error_code EC = ReaderOrErr.getError()) {
       unsigned DiagID = Diags.getCustomDiagID(DiagnosticsEngine::Error,
                                               "Could not read profile %0: %1");
-      getDiags().Report(DiagID) << CodeGenOpts.InstrProfileInput
+      getDiags().Report(DiagID) << CodeGenOpts.ProfileInstrumentUsePath
                                 << EC.message();
     } else
       PGOReader = std::move(ReaderOrErr.get());