[PATCH] D76152: [LoopIdiom] memmove() on aliased pointers

[Stefanos Baziotis via Phabricator via llvm-commits]

baziotis created this revision.
baziotis added reviewers: chandlerc, lebedev.ri, asbirlea, sanjoy.
Herald added subscribers: llvm-commits, jfb, hiraditya.
Herald added a project: LLVM.

When trying to recognize memcpy(), if the store is aliased only by the load, then we can use `memmove()`.

Note: Just yesterday I opened `LoopIdiom` pass for the first time, so I'm not super familiar. Definitely I want to check the tests
again and maybe add one or two.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D76152

Files:
  llvm/lib/Transforms/Scalar/LoopIdiomRecognize.cpp
  llvm/test/Transforms/LoopIdiom/basic-address-space.ll
  llvm/test/Transforms/LoopIdiom/basic.ll
  llvm/test/Transforms/LoopIdiom/pr28196.ll

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