Check linkage.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50851 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/lib/Transforms/IPO/StructRetPromotion.cpp b/lib/Transforms/IPO/StructRetPromotion.cpp
index 80952b7c70c5c0415b457c23ce46209c587476b6..77a35b428759220352771115bf12b176cea6056c 100644 (file)
--- a/lib/Transforms/IPO/StructRetPromotion.cpp
+++ b/lib/Transforms/IPO/StructRetPromotion.cpp
@@ -73,7 +73,7 @@ bool SRETPromotion::runOnSCC(const std::vector<CallGraphNode *> &SCC) {
 bool SRETPromotion::PromoteReturn(CallGraphNode *CGN) {
   Function *F = CGN->getFunction();
 
-  if (!F || F->isDeclaration())
+  if (!F || F->isDeclaration() || !F->hasInternalLinkage())
     return false;
 
   // Make sure that function returns struct.