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, 3 insertions, 4 deletions

diff --git a/llvm/lib/Target/AMDGPU/R600InstrInfo.h b/llvm/lib/Target/AMDGPU/R600InstrInfo.h
index 6c3557af191..de586e74eaf 100644
--- a/llvm/lib/Target/AMDGPU/R600InstrInfo.h
+++ b/llvm/lib/Target/AMDGPU/R600InstrInfo.h
@@ -58,9 +58,8 @@ namespace llvm {
   explicit R600InstrInfo(const AMDGPUSubtarget &st);
 
   const R600RegisterInfo &getRegisterInfo() const override;
-  void copyPhysReg(MachineBasicBlock &MBB,
-                   MachineBasicBlock::iterator MI, DebugLoc DL,
-                   unsigned DestReg, unsigned SrcReg,
+  void copyPhysReg(MachineBasicBlock &MBB, MachineBasicBlock::iterator MI,
+                   const DebugLoc &DL, unsigned DestReg, unsigned SrcReg,
                    bool KillSrc) const override;
   bool isLegalToSplitMBBAt(MachineBasicBlock &MBB,
                            MachineBasicBlock::iterator MBBI) const override;
@@ -161,7 +160,7 @@ namespace llvm {
 
   unsigned InsertBranch(MachineBasicBlock &MBB, MachineBasicBlock *TBB,
                         MachineBasicBlock *FBB, ArrayRef<MachineOperand> Cond,
-                        DebugLoc DL) const override;
+                        const DebugLoc &DL) const override;
 
   unsigned RemoveBranch(MachineBasicBlock &MBB) const override;