[llvm] [LoopPeel] Remove known trip count restriction when peeling last. (PR #140792)

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``````````bash
git-clang-format --diff HEAD~1 HEAD --extensions h,cpp -- llvm/include/llvm/Transforms/Utils/LoopPeel.h llvm/lib/Transforms/Scalar/LoopUnrollPass.cpp llvm/lib/Transforms/Utils/LoopPeel.cpp
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View the diff from clang-format here.
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``````````diff
diff --git a/llvm/lib/Transforms/Utils/LoopPeel.cpp b/llvm/lib/Transforms/Utils/LoopPeel.cpp
index 2f5d815db..9062a14bc 100644
--- a/llvm/lib/Transforms/Utils/LoopPeel.cpp
+++ b/llvm/lib/Transforms/Utils/LoopPeel.cpp
@@ -364,7 +364,8 @@ static bool shouldPeelLastIteration(Loop &L, CmpPredicate Pred,
 
   const SCEV *BTC = SE.getBackedgeTakenCount(&L);
   SCEVExpander Expander(SE, L.getHeader()->getDataLayout(), "loop-peel");
-  if (!SE.isKnownNonZero(BTC) && Expander.isHighCostExpansion(BTC, &L, SCEVCheapExpansionBudget, &TTI,
+  if (!SE.isKnownNonZero(BTC) &&
+      Expander.isHighCostExpansion(BTC, &L, SCEVCheapExpansionBudget, &TTI,
                                    L.getLoopPredecessor()->getTerminator()))
     return false;
 

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https://github.com/llvm/llvm-project/pull/140792