[llvm] [Vectorize] Avoid repeated hash lookups (NFC) (PR #132661)

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git-clang-format --diff 5d8e8e82e1cf0df49afceffe52dbccec3084c15f 7fa16fd269e3ede48c5f3ebc1c2272f6b68f6c44 --extensions cpp -- llvm/lib/Transforms/Vectorize/LoopVectorize.cpp
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View the diff from clang-format here.
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diff --git a/llvm/lib/Transforms/Vectorize/LoopVectorize.cpp b/llvm/lib/Transforms/Vectorize/LoopVectorize.cpp
index 294985353c..e1bc492a8f 100644
--- a/llvm/lib/Transforms/Vectorize/LoopVectorize.cpp
+++ b/llvm/lib/Transforms/Vectorize/LoopVectorize.cpp
@@ -5815,7 +5815,7 @@ LoopVectorizationCostModel::getReductionPatternCost(Instruction *I,
 
   // Test if the found instruction is a reduction, and if not return an invalid
   // cost specifying the parent to use the original cost modelling.
-  Instruction *LastChain  = InLoopReductionImmediateChains.lookup(RetI);
+  Instruction *LastChain = InLoopReductionImmediateChains.lookup(RetI);
   if (!LastChain)
     return std::nullopt;
 

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https://github.com/llvm/llvm-project/pull/132661