[llvm] r269146 - [PGO] Use WeakAny linkage for __llvm_profile_raw_version

[Rong Xu via llvm-commits]

Author: xur
Date: Tue May 10 19:31:59 2016
New Revision: 269146

URL: http://llvm.org/viewvc/llvm-project?rev=269146&view=rev
Log:
[PGO] Use WeakAny linkage for __llvm_profile_raw_version
Use WeakAny linkage instead of LinkOnceAny, as the symbol can be removed with
LinkOnceAny in O2 (not referenced).

Modified:
    llvm/trunk/lib/Transforms/Instrumentation/PGOInstrumentation.cpp

Modified: llvm/trunk/lib/Transforms/Instrumentation/PGOInstrumentation.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Transforms/Instrumentation/PGOInstrumentation.cpp?rev=269146&r1=269145&r2=269146&view=diff
==============================================================================
--- llvm/trunk/lib/Transforms/Instrumentation/PGOInstrumentation.cpp (original)
+++ llvm/trunk/lib/Transforms/Instrumentation/PGOInstrumentation.cpp Tue May 10 19:31:59 2016
@@ -771,7 +771,7 @@ static void createIRLevelProfileFlagVari
   IRLevelVersionVariable->setVisibility(GlobalValue::DefaultVisibility);
   Triple TT(M.getTargetTriple());
   if (TT.isOSBinFormatMachO())
-    IRLevelVersionVariable->setLinkage(GlobalValue::LinkOnceAnyLinkage);
+    IRLevelVersionVariable->setLinkage(GlobalValue::WeakAnyLinkage);
   else
     IRLevelVersionVariable->setComdat(M.getOrInsertComdat(
         StringRef(INSTR_PROF_QUOTE(IR_LEVEL_PROF_VERSION_VAR))));