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Use reference instead of copy.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@190813 91177308-0d34-0410-b5e6-96231b3b80d8
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@ -357,7 +357,7 @@ void PEI::propagateUsesAroundLoop(MachineBasicBlock* MBB, MachineLoop* LP) {
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///
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bool PEI::calculateSets(MachineFunction &Fn) {
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// Sets used to compute spill, restore placement sets.
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const std::vector<CalleeSavedInfo> CSI =
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const std::vector<CalleeSavedInfo> &CSI =
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Fn.getFrameInfo()->getCalleeSavedInfo();
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// If no CSRs used, we are done.
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@ -1054,7 +1054,7 @@ std::string PEI::getBasicBlockName(const MachineBasicBlock* MBB) {
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std::string PEI::stringifyCSRegSet(const CSRegSet& s) {
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const TargetRegisterInfo* TRI = MF->getTarget().getRegisterInfo();
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const std::vector<CalleeSavedInfo> CSI =
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const std::vector<CalleeSavedInfo> &CSI =
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MF->getFrameInfo()->getCalleeSavedInfo();
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std::ostringstream srep;
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@ -1646,7 +1646,7 @@ void AsmParser::DiagHandler(const SMDiagnostic &Diag, void *Context) {
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// Use the CppHashFilename and calculate a line number based on the
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// CppHashLoc and CppHashLineNumber relative to this Diag's SMLoc for
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// the diagnostic.
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const std::string Filename = Parser->CppHashFilename;
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const std::string &Filename = Parser->CppHashFilename;
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int DiagLocLineNo = DiagSrcMgr.FindLineNumber(DiagLoc, DiagBuf);
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int CppHashLocLineNo =
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