Index: llvm/trunk/lib/Transforms/Instrumentation/PGOInstrumentation.cpp
===================================================================
--- llvm/trunk/lib/Transforms/Instrumentation/PGOInstrumentation.cpp
+++ llvm/trunk/lib/Transforms/Instrumentation/PGOInstrumentation.cpp
@@ -776,7 +776,7 @@
   IRLevelVersionVariable->setVisibility(GlobalValue::DefaultVisibility);
   Triple TT(M.getTargetTriple());
   if (TT.isOSBinFormatMachO())
-    IRLevelVersionVariable->setLinkage(GlobalValue::LinkOnceODRLinkage);
+    IRLevelVersionVariable->setLinkage(GlobalValue::LinkOnceAnyLinkage);
   else
     IRLevelVersionVariable->setComdat(M.getOrInsertComdat(
         StringRef(INSTR_PROF_QUOTE(IR_LEVEL_PROF_VERSION_VAR))));
Index: llvm/trunk/test/Transforms/PGOProfile/macho.ll
===================================================================
--- llvm/trunk/test/Transforms/PGOProfile/macho.ll
+++ llvm/trunk/test/Transforms/PGOProfile/macho.ll
@@ -0,0 +1,9 @@
+; RUN: opt < %s -mtriple=x86_64-apple-macosx10.11.0 -pgo-instr-gen -instrprof -S | llc | FileCheck %s --check-prefix=MACHO-DIRECTIVE
+
+target datalayout = "e-m:o-i64:64-f80:128-n8:16:32:64-S128"
+
+; MACHO-DIRECTIVE: .weak_definition        ___llvm_profile_raw_version
+define i32 @test_macho(i32 %i) {
+entry:
+  ret i32 %i
+}