[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).

llvm-svn: 269146

1 files changed, 1 insertions, 1 deletions

diff --git a/llvm/lib/Transforms/Instrumentation/PGOInstrumentation.cpp b/llvm/lib/Transforms/Instrumentation/PGOInstrumentation.cpp
index e5e798b3fd0..6ec36319e3e 100644
--- a/llvm/lib/Transforms/Instrumentation/PGOInstrumentation.cpp
+++ b/llvm/lib/Transforms/Instrumentation/PGOInstrumentation.cpp
@@ -771,7 +771,7 @@ static void createIRLevelProfileFlagVariable(Module &M) {
   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))));