[llvm] [SROA] Add Stored Value Size Check for Tree-Structured Merge (PR #162921)

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``````````bash
git-clang-format --diff origin/main HEAD --extensions cpp -- llvm/lib/Transforms/Scalar/SROA.cpp
``````````

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View the diff from clang-format here.
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``````````diff
diff --git a/llvm/lib/Transforms/Scalar/SROA.cpp b/llvm/lib/Transforms/Scalar/SROA.cpp
index dc24adab4..f4c5c01ba 100644
--- a/llvm/lib/Transforms/Scalar/SROA.cpp
+++ b/llvm/lib/Transforms/Scalar/SROA.cpp
@@ -2997,7 +2997,7 @@ public:
         if (!IsTypeValidForTreeStructuredMerge(
                 SI->getValueOperand()->getType()) ||
             SI->isVolatile())
-        return std::nullopt;
+          return std::nullopt;
         auto *VecTy = cast<FixedVectorType>(SI->getValueOperand()->getType());
         unsigned NumElts = VecTy->getNumElements();
         unsigned EltSize = DL.getTypeSizeInBits(VecTy->getElementType());

``````````

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https://github.com/llvm/llvm-project/pull/162921