From: Bill Wendling <isanbard@gmail.com>
Date: Thu, 15 Aug 2013 20:21:49 +0000 (+0000)
Subject: Use a reference instead of making an unnecessary copy. Also use 'const'.
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=7d938adacc9a625b09dd1b4c0c0df0247a1b1ed2;p=oota-llvm.git

Use a reference instead of making an unnecessary copy. Also use 'const'.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@188483 91177308-0d34-0410-b5e6-96231b3b80d8
---

diff --git a/lib/CodeGen/AsmPrinter/AsmPrinter.cpp b/lib/CodeGen/AsmPrinter/AsmPrinter.cpp
index d8a20f800b9..4d9497a96bd 100644
--- a/lib/CodeGen/AsmPrinter/AsmPrinter.cpp
+++ b/lib/CodeGen/AsmPrinter/AsmPrinter.cpp
@@ -658,11 +658,11 @@ void AsmPrinter::emitPrologLabel(const MachineInstr &MI) {
     OutStreamer.EmitCompactUnwindEncoding(MMI->getCompactUnwindEncoding());
 
   MachineModuleInfo &MMI = MF->getMMI();
-  std::vector<MCCFIInstruction> Instructions = MMI.getFrameInstructions();
+  const std::vector<MCCFIInstruction> &Instrs = MMI.getFrameInstructions();
   bool FoundOne = false;
   (void)FoundOne;
-  for (std::vector<MCCFIInstruction>::iterator I = Instructions.begin(),
-         E = Instructions.end(); I != E; ++I) {
+  for (std::vector<MCCFIInstruction>::const_iterator I = Instrs.begin(),
+         E = Instrs.end(); I != E; ++I) {
     if (I->getLabel() == Label) {
       emitCFIInstruction(*I);
       FoundOne = true;