[llvm] 596004a - MemCpyOptimizer.cpp - hasUndefContentsMSSA - Pass DataLayout by reference. NFCI.

[Simon Pilgrim via llvm-commits]

Author: Simon Pilgrim
Date: 2021-06-08T10:41:02+01:00
New Revision: 596004a94748e427ff59956e74d8ed4eb0e109d4

URL: https://github.com/llvm/llvm-project/commit/596004a94748e427ff59956e74d8ed4eb0e109d4
DIFF: https://github.com/llvm/llvm-project/commit/596004a94748e427ff59956e74d8ed4eb0e109d4.diff

LOG: MemCpyOptimizer.cpp - hasUndefContentsMSSA - Pass DataLayout by reference. NFCI.

Added: 
    

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

Removed: 
    


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diff  --git a/llvm/lib/Transforms/Scalar/MemCpyOptimizer.cpp b/llvm/lib/Transforms/Scalar/MemCpyOptimizer.cpp
index 6cf317a1c47f7..db8d40b2bafaf 100644
--- a/llvm/lib/Transforms/Scalar/MemCpyOptimizer.cpp
+++ b/llvm/lib/Transforms/Scalar/MemCpyOptimizer.cpp
@@ -1275,7 +1275,7 @@ static bool hasUndefContentsMSSA(MemorySSA *MSSA, AliasAnalysis *AA, Value *V,
       // The size also doesn't matter, as an out-of-bounds access would be UB.
       AllocaInst *Alloca = dyn_cast<AllocaInst>(getUnderlyingObject(V));
       if (getUnderlyingObject(II->getArgOperand(1)) == Alloca) {
-        DataLayout DL = Alloca->getModule()->getDataLayout();
+        const DataLayout &DL = Alloca->getModule()->getDataLayout();
         if (Optional<TypeSize> AllocaSize = Alloca->getAllocationSizeInBits(DL))
           if (*AllocaSize == LTSize->getValue() * 8)
             return true;