[llvm] [LV] Skip sentinel value for FindLastIV reductions when start value is provably less than IV start. (PR #141788)

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github-actions[bot] wrote:

<!--LLVM CODE FORMAT COMMENT: {clang-format}-->


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``````````bash
git-clang-format --diff HEAD~1 HEAD --extensions cpp,h -- llvm/include/llvm/Analysis/IVDescriptors.h llvm/lib/Analysis/IVDescriptors.cpp llvm/lib/Transforms/Utils/LoopUtils.cpp llvm/lib/Transforms/Vectorize/LoopVectorize.cpp llvm/lib/Transforms/Vectorize/VPlanRecipes.cpp
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View the diff from clang-format here.
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``````````diff
diff --git a/llvm/lib/Analysis/IVDescriptors.cpp b/llvm/lib/Analysis/IVDescriptors.cpp
index e52606b82..f558a1c35 100644
--- a/llvm/lib/Analysis/IVDescriptors.cpp
+++ b/llvm/lib/Analysis/IVDescriptors.cpp
@@ -707,7 +707,7 @@ RecurrenceDescriptor::isFindLastIVPattern(Loop *TheLoop, PHINode *OrigPhi,
                                      m_Value(NonRdxPhi)))))
     return InstDesc(false, I);
 
-  auto IsIncreasingLoopInduction = [&](Value *V) -> std::pair<bool, Value*> {
+  auto IsIncreasingLoopInduction = [&](Value *V) -> std::pair<bool, Value *> {
     Type *Ty = V->getType();
     if (!SE.isSCEVable(Ty))
       return {false, nullptr};

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https://github.com/llvm/llvm-project/pull/141788