[llvm] AMDGPU: Avoid unnecessary copy of DebugLoc (PR #156389)

[via llvm-commits]

llvmbot wrote:


<!--LLVM PR SUMMARY COMMENT-->

@llvm/pr-subscribers-backend-amdgpu

Author: Matt Arsenault (arsenm)

<details>
<summary>Changes</summary>



---
Full diff: https://github.com/llvm/llvm-project/pull/156389.diff


1 Files Affected:

- (modified) llvm/lib/Target/AMDGPU/SILoadStoreOptimizer.cpp (+1-1) 


``````````diff
diff --git a/llvm/lib/Target/AMDGPU/SILoadStoreOptimizer.cpp b/llvm/lib/Target/AMDGPU/SILoadStoreOptimizer.cpp
index 263f7127fbf10..4c51d1e506bd6 100644
--- a/llvm/lib/Target/AMDGPU/SILoadStoreOptimizer.cpp
+++ b/llvm/lib/Target/AMDGPU/SILoadStoreOptimizer.cpp
@@ -1491,7 +1491,7 @@ MachineBasicBlock::iterator SILoadStoreOptimizer::mergeWrite2Pair(
          (NewOffset0 != NewOffset1) && "Computed offset doesn't fit");
 
   const MCInstrDesc &Write2Desc = TII->get(Opc);
-  DebugLoc DL = CI.I->getDebugLoc();
+  const DebugLoc &DL = CI.I->getDebugLoc();
 
   Register BaseReg = AddrReg->getReg();
   unsigned BaseSubReg = AddrReg->getSubReg();

``````````

</details>


https://github.com/llvm/llvm-project/pull/156389