1 files changed, 4 insertions, 1 deletions
diff --git a/lib/LTO/LTO.cpp b/lib/LTO/LTO.cpp
index 6b11f690ef3..d8e5d6ed6be 100644
--- a/lib/LTO/LTO.cpp
+++ b/lib/LTO/LTO.cpp
@@ -356,7 +356,10 @@ static void thinLTOInternalizeAndPromoteGUID(
                // Ignore local and appending linkage values since the linker
                // doesn't resolve them.
                !GlobalValue::isLocalLinkage(S->linkage()) &&
-               !GlobalValue::isAppendingLinkage(S->linkage()))
+               S->linkage() != GlobalValue::AppendingLinkage &&
+               // We can't internalize available_externally globals because this
+               // can break function pointer equality.
+               S->linkage() != GlobalValue::AvailableExternallyLinkage)
       S->setLinkage(GlobalValue::InternalLinkage);
   }
 }