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, 4 insertions, 7 deletions

diff --git a/llvm/lib/Target/ARM/ARMBaseRegisterInfo.cpp b/llvm/lib/Target/ARM/ARMBaseRegisterInfo.cpp
index a873b2b26a4..aa968efc37d 100644
--- a/llvm/lib/Target/ARM/ARMBaseRegisterInfo.cpp
+++ b/llvm/lib/Target/ARM/ARMBaseRegisterInfo.cpp
@@ -408,13 +408,10 @@ ARMBaseRegisterInfo::getFrameRegister(const MachineFunction &MF) const {
 
 /// emitLoadConstPool - Emits a load from constpool to materialize the
 /// specified immediate.
-void ARMBaseRegisterInfo::
-emitLoadConstPool(MachineBasicBlock &MBB,
-                  MachineBasicBlock::iterator &MBBI,
-                  DebugLoc dl,
-                  unsigned DestReg, unsigned SubIdx, int Val,
-                  ARMCC::CondCodes Pred,
-                  unsigned PredReg, unsigned MIFlags) const {
+void ARMBaseRegisterInfo::emitLoadConstPool(
+    MachineBasicBlock &MBB, MachineBasicBlock::iterator &MBBI,
+    const DebugLoc &dl, unsigned DestReg, unsigned SubIdx, int Val,
+    ARMCC::CondCodes Pred, unsigned PredReg, unsigned MIFlags) const {
   MachineFunction &MF = *MBB.getParent();
   const TargetInstrInfo &TII = *MF.getSubtarget().getInstrInfo();
   MachineConstantPool *ConstantPool = MF.getConstantPool();