diff --git a/llvm/lib/CodeGen/ShrinkWrapping.cpp b/llvm/lib/CodeGen/ShrinkWrapping.cpp
index 6c826de..2b01fdd 100644
--- a/llvm/lib/CodeGen/ShrinkWrapping.cpp
+++ b/llvm/lib/CodeGen/ShrinkWrapping.cpp
@@ -357,7 +357,7 @@
 ///
 bool PEI::calculateSets(MachineFunction &Fn) {
   // Sets used to compute spill, restore placement sets.
-  const std::vector<CalleeSavedInfo> CSI =
+  const std::vector<CalleeSavedInfo> &CSI =
     Fn.getFrameInfo()->getCalleeSavedInfo();
 
   // If no CSRs used, we are done.
@@ -1054,7 +1054,7 @@
 
 std::string PEI::stringifyCSRegSet(const CSRegSet& s) {
   const TargetRegisterInfo* TRI = MF->getTarget().getRegisterInfo();
-  const std::vector<CalleeSavedInfo> CSI =
+  const std::vector<CalleeSavedInfo> &CSI =
     MF->getFrameInfo()->getCalleeSavedInfo();
 
   std::ostringstream srep;