Address review comments

Author: preames

llvm/include/llvm/Transforms/Utils/LowerMemIntrinsics.h

@@ -61,7 +61,7 @@ void expandMemSetAsLoop(MemSetInst *MemSet);
 /// Expand \p MemSetPattern as a loop. \p MemSet is not deleted.
 void expandMemSetPatternAsLoop(MemSetPatternInst *MemSet);
 
-/// Expand an atomic \p MemCpy as a loop. \p AtomicMemCpy is not deleted.
+/// Expand \p AtomicMemCpy as a loop. \p AtomicMemCpy is not deleted.
 void expandAtomicMemCpyAsLoop(AnyMemCpyInst *AtomicMemCpy,
                               const TargetTransformInfo &TTI,
                               ScalarEvolution *SE);

llvm/lib/Transforms/Scalar/DeadStoreElimination.cpp

@@ -670,10 +670,10 @@ static bool tryToShorten(Instruction *DeadI, int64_t &DeadStart,
   assert(DeadSize > ToRemoveSize && "Can't remove more than original size");
 
   uint64_t NewSize = DeadSize - ToRemoveSize;
-  if (auto *AMI = dyn_cast<AnyMemIntrinsic>(DeadI); AMI && AMI->isAtomic()) {
+  if (DeadIntrinsic->isAtomic()) {
     // When shortening an atomic memory intrinsic, the newly shortened
     // length must remain an integer multiple of the element size.
-    const uint32_t ElementSize = AMI->getElementSizeInBytes();
+    const uint32_t ElementSize = DeadIntrinsic->getElementSizeInBytes();
     if (0 != NewSize % ElementSize)
       return false;
   }