diff options
Diffstat (limited to 'llvm/lib/Transforms/Scalar')
| -rw-r--r-- | llvm/lib/Transforms/Scalar/LoopIdiomRecognize.cpp | 9 |
1 files changed, 4 insertions, 5 deletions
diff --git a/llvm/lib/Transforms/Scalar/LoopIdiomRecognize.cpp b/llvm/lib/Transforms/Scalar/LoopIdiomRecognize.cpp index cbba6800a67..0fb224d42b5 100644 --- a/llvm/lib/Transforms/Scalar/LoopIdiomRecognize.cpp +++ b/llvm/lib/Transforms/Scalar/LoopIdiomRecognize.cpp @@ -361,9 +361,7 @@ bool LoopIdiomRecognize::processLoopStore(StoreInst *SI, const SCEV *BECount) { StoredVal, SI, StoreEv, BECount, NegStride)) return true; - // If the stored value is a strided load in the same loop with the same stride - // this may be transformable into a memcpy. This kicks in for stuff like - // for (i) A[i] = B[i]; + // Optimize the store into a memcpy, if it feeds an similarly strided load. return processLoopStoreOfLoopLoad(SI, StoreSize, StoreEv, BECount, NegStride); } @@ -607,8 +605,9 @@ bool LoopIdiomRecognize::processLoopStridedStore( return true; } -/// processLoopStoreOfLoopLoad - We see a strided store whose value is a -/// same-strided load. +/// If the stored value is a strided load in the same loop with the same stride +/// this may be transformable into a memcpy. This kicks in for stuff like +/// for (i) A[i] = B[i]; bool LoopIdiomRecognize::processLoopStoreOfLoopLoad( StoreInst *SI, unsigned StoreSize, const SCEVAddRecExpr *StoreEv, const SCEV *BECount, bool NegStride) { |
