[PATCH] D27744: Create SampleProfileLoader pass in llvm instead of clang

[Dehao Chen via Phabricator via cfe-commits]

danielcdh created this revision.
danielcdh added reviewers: dnovillo, tejohnson, davidxl.
danielcdh added a subscriber: cfe-commits.
Herald added a subscriber: mehdi_amini.

We used to create SampleProfileLoader pass in clang. This makes LTO/ThinLTO unable to add this pass in the linker plugin. This patch moves the SampleProfileLoader pass creation from
clang to llvm pass manager builder.


https://reviews.llvm.org/D27744

Files:
  lib/CodeGen/BackendUtil.cpp


Index: lib/CodeGen/BackendUtil.cpp
===================================================================
--- lib/CodeGen/BackendUtil.cpp
+++ lib/CodeGen/BackendUtil.cpp
@@ -464,10 +464,8 @@
   if (CodeGenOpts.hasProfileIRUse())
     PMBuilder.PGOInstrUse = CodeGenOpts.ProfileInstrumentUsePath;
 
-  if (!CodeGenOpts.SampleProfileFile.empty()) {
-    MPM.add(createPruneEHPass());
-    MPM.add(createSampleProfileLoaderPass(CodeGenOpts.SampleProfileFile));
-  }
+  if (!CodeGenOpts.SampleProfileFile.empty())
+    PMBuilder.PGOSampleUse = CodeGenOpts.SampleProfileFile;
 
   PMBuilder.populateFunctionPassManager(FPM);
   PMBuilder.populateModulePassManager(MPM);


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