[PATCH] D108112: [LoopIdiom] let LIR fold memset pointer / stride SCEV regarding loop guards

[Yueh-Ting Chen via Phabricator via llvm-commits]

eopXD created this revision.
eopXD added reviewers: Whitney, lebedev.ri, efriedma.
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Herald added a subscriber: llvm-commits.

Expression guraded in loop entry can be folded prior to comparison. This patch
proceeds D107353 <https://reviews.llvm.org/D107353> and makes LIR able to deal with nested for-loop.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D108112

Files:
  llvm/lib/Transforms/Scalar/LoopIdiomRecognize.cpp
  llvm/test/Transforms/LoopIdiom/memset-runtime-debug.ll
  llvm/test/Transforms/LoopIdiom/memset-runtime.ll

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