[llvm] [NFC][LoopVectorize] Cache result of requiresScalarEpilogue (PR #108981)

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git-clang-format --diff ce6c236c965dc1bb5fa2257e17ea253a015705cc bf04a43aabd5eb907a706de843609cb8eeb85c3a --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 1ecf17c21b..33c01bdf3f 100644
--- a/llvm/lib/Transforms/Vectorize/LoopVectorize.cpp
+++ b/llvm/lib/Transforms/Vectorize/LoopVectorize.cpp
@@ -1383,7 +1383,8 @@ public:
       // If we might exit from anywhere but the latch, must run the exiting
       // iteration in scalar form.
       if (TheLoop->getExitingBlock() != TheLoop->getLoopLatch()) {
-        LLVM_DEBUG(dbgs() << "LV: Loop requires scalar epilogue: multiple exits");
+        LLVM_DEBUG(
+            dbgs() << "LV: Loop requires scalar epilogue: multiple exits");
         return true;
       }
       if (IsVectorizing && InterleaveInfo.requiresScalarEpilogue()) {
@@ -1397,7 +1398,7 @@ public:
 
     assert((Invalidate || !RequiresScalarEpilogue) &&
            "Already determined scalar epilogue requirements!");
-    std::pair<bool,bool> Result;
+    std::pair<bool, bool> Result;
     Result.first = NeedsScalarEpilogue(true);
     LLVM_DEBUG(dbgs() << ", when vectorizing\n");
     Result.second = NeedsScalarEpilogue(false);
@@ -1796,7 +1797,7 @@ public:
   SmallPtrSet<Type *, 16> ElementTypesInLoop;
 
   /// Keeps track of whether we require a scalar epilogue.
-  std::optional<std::pair<bool,bool>> RequiresScalarEpilogue;
+  std::optional<std::pair<bool, bool>> RequiresScalarEpilogue;
 };
 } // end namespace llvm
 

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https://github.com/llvm/llvm-project/pull/108981