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git-clang-format --diff origin/main HEAD --extensions cpp -- llvm/lib/Transforms/Scalar/LoopStrengthReduce.cpp
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``````````diff
diff --git a/llvm/lib/Transforms/Scalar/LoopStrengthReduce.cpp b/llvm/lib/Transforms/Scalar/LoopStrengthReduce.cpp
index 22ab5820b..26d8e6127 100644
--- a/llvm/lib/Transforms/Scalar/LoopStrengthReduce.cpp
+++ b/llvm/lib/Transforms/Scalar/LoopStrengthReduce.cpp
@@ -1431,10 +1431,12 @@ void Cost::RateRegister(const Formula &F, const SCEV *Reg,
if (match(AR, m_scev_AffineAddRec(m_SCEV(Start), m_SCEVConstant(Step)))) {
// If the step size matches the base offset, we could use pre-indexed
// addressing.
- bool CanPreIndex = (AMK & TTI::AMK_PreIndexed) && F.BaseOffset.isFixed() &&
- Step->getAPInt() == F.BaseOffset.getFixedValue();
- bool CanPostIndex = (AMK & TTI::AMK_PostIndexed) && !isa<SCEVConstant>(Start) &&
- SE->isLoopInvariant(Start, L);
+ bool CanPreIndex = (AMK & TTI::AMK_PreIndexed) &&
+ F.BaseOffset.isFixed() &&
+ Step->getAPInt() == F.BaseOffset.getFixedValue();
+ bool CanPostIndex = (AMK & TTI::AMK_PostIndexed) &&
+ !isa<SCEVConstant>(Start) &&
+ SE->isLoopInvariant(Start, L);
// We can only pre or post index when the load/store is unconditional.
if ((CanPreIndex || CanPostIndex) && LU.AllFixupsUnconditional)
LoopCost = 0;
``````````
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https://github.com/llvm/llvm-project/pull/159573