[llvm] [LoopVectorize] Compute BlockFrequencyInfo eagerly to fix assertion failure (PR #215237)

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git-clang-format --diff origin/main HEAD --extensions cpp -- llvm/lib/Transforms/Vectorize/LoopVectorize.cpp --diff_from_common_commit
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``````````diff
diff --git a/llvm/lib/Transforms/Vectorize/LoopVectorize.cpp b/llvm/lib/Transforms/Vectorize/LoopVectorize.cpp
index bc313849b..1333724b7 100644
--- a/llvm/lib/Transforms/Vectorize/LoopVectorize.cpp
+++ b/llvm/lib/Transforms/Vectorize/LoopVectorize.cpp
@@ -8484,9 +8484,7 @@ PreservedAnalyses LoopVectorizePass::run(Function &F,
   // CycleAnalysis may be stale (holding pointers to deleted blocks), causing
   // crashes.
   BlockFrequencyInfo &BFIRef = AM.getResult<BlockFrequencyAnalysis>(F);
-  GetBFI = [&BFIRef]() -> BlockFrequencyInfo & {
-    return BFIRef;
-  };
+  GetBFI = [&BFIRef]() -> BlockFrequencyInfo & { return BFIRef; };
   LoopVectorizeResult Result = runImpl(F);
   if (!Result.MadeAnyChange)
     return PreservedAnalyses::all();

``````````

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https://github.com/llvm/llvm-project/pull/215237