If a function call returns a reference, don't bind it to a temporary.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@81743 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 7 insertions, 1 deletions

diff --git a/lib/CodeGen/CGCXXTemp.cpp b/lib/CodeGen/CGCXXTemp.cpp
index 177c6db3e8..4768556f6b 100644
--- a/lib/CodeGen/CGCXXTemp.cpp
+++ b/lib/CodeGen/CGCXXTemp.cpp
@@ -54,7 +54,13 @@ void CodeGenFunction::PopCXXTemporary() {
   assert(!CleanupInfo.EndBlock &&
          "Should not have an end block for temporary cleanup!");
 
-  EmitBlock(Info.DtorBlock);
+  llvm::BasicBlock *CurBB = Builder.GetInsertBlock();
+  if (CurBB && !CurBB->getTerminator() &&
+      Info.DtorBlock->getNumUses() == 0) {
+    CurBB->getInstList().splice(CurBB->end(), Info.DtorBlock->getInstList());
+    delete Info.DtorBlock;
+  } else
+    EmitBlock(Info.DtorBlock);
 
   llvm::BasicBlock *CondEnd = 0;