[llvm] f780e46 - [llvm][ExpandMemCmp] Avoid making copy of loop value (#193915)

[via llvm-commits]

Author: Ivan R. Ivanov
Date: 2026-04-24T11:12:52+02:00
New Revision: f780e46d6e0e2b537dbe45092fb62c4a46b95916

URL: https://github.com/llvm/llvm-project/commit/f780e46d6e0e2b537dbe45092fb62c4a46b95916
DIFF: https://github.com/llvm/llvm-project/commit/f780e46d6e0e2b537dbe45092fb62c4a46b95916.diff

LOG: [llvm][ExpandMemCmp] Avoid making copy of loop value (#193915)

This fixes a compiler warning.

Added: 
    

Modified: 
    llvm/lib/Transforms/Scalar/ExpandMemCmp.cpp

Removed: 
    


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diff  --git a/llvm/lib/Transforms/Scalar/ExpandMemCmp.cpp b/llvm/lib/Transforms/Scalar/ExpandMemCmp.cpp
index b813a91337efc..fe55e0947ac82 100644
--- a/llvm/lib/Transforms/Scalar/ExpandMemCmp.cpp
+++ b/llvm/lib/Transforms/Scalar/ExpandMemCmp.cpp
@@ -899,7 +899,7 @@ static PreservedAnalyses runImpl(Function &F, const TargetLibraryInfo *TLI,
   }
 
   bool MadeChanges = false;
-  for (const auto [CI, Func] : MemCmpCalls) {
+  for (const auto &[CI, Func] : MemCmpCalls) {
     if (expandMemCmp(CI, TTI, &DL, PSI, BFI, DTU ? &*DTU : nullptr,
                      Func == LibFunc_bcmp))
       MadeChanges = true;