Pass DebugLoc and SDLoc by const ref.

This used to be free, copying and moving DebugLocs became expensive
after the metadata rewrite. Passing by reference eliminates a ton of
track/untrack operations. No functionality change intended.

llvm-svn: 272512

1 files changed, 5 insertions, 6 deletions

diff --git a/llvm/lib/Target/ARM/Thumb1FrameLowering.cpp b/llvm/lib/Target/ARM/Thumb1FrameLowering.cpp
index a6ec37e6469..c2dde19850c 100644
--- a/llvm/lib/Target/ARM/Thumb1FrameLowering.cpp
+++ b/llvm/lib/Target/ARM/Thumb1FrameLowering.cpp
@@ -38,12 +38,11 @@ bool Thumb1FrameLowering::hasReservedCallFrame(const MachineFunction &MF) const{
   return !MF.getFrameInfo()->hasVarSizedObjects();
 }
 
-static void
-emitSPUpdate(MachineBasicBlock &MBB,
-             MachineBasicBlock::iterator &MBBI,
-             const TargetInstrInfo &TII, DebugLoc dl,
-             const ThumbRegisterInfo &MRI,
-             int NumBytes, unsigned MIFlags = MachineInstr::NoFlags)  {
+static void emitSPUpdate(MachineBasicBlock &MBB,
+                         MachineBasicBlock::iterator &MBBI,
+                         const TargetInstrInfo &TII, const DebugLoc &dl,
+                         const ThumbRegisterInfo &MRI, int NumBytes,
+                         unsigned MIFlags = MachineInstr::NoFlags) {
   emitThumbRegPlusImmediate(MBB, MBBI, dl, ARM::SP, ARM::SP, NumBytes, TII,
                             MRI, MIFlags);
 }