[PATCH] D104464: [LoopIdiom] Transform memmove-like loop into memmove (PR46179)

[Dawid Jurczak via Phabricator via llvm-commits]

yurai007 created this revision.
yurai007 added reviewers: craig.topper, lebedev.ri, nikic, xbolva00, reames, asbirlea.
Herald added subscribers: jfb, hiraditya.
yurai007 requested review of this revision.
Herald added a project: LLVM.
Herald added a subscriber: llvm-commits.

The purpose of patch is to learn Loop idiom recognition pass how to recognize simple memmove patterns
in similar way like GCC does: https://godbolt.org/z/fh95e83od
LoopIdiomRecognize already has machinery for memset and memcpy recognition, patch tries to extend existing capabilities with minimal effort.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D104464

Files:
  llvm/lib/Transforms/Scalar/LoopIdiomRecognize.cpp
  llvm/test/Transforms/LoopIdiom/basic.ll

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