[PATCH] D119929: [MemCpyOpt] Check uses of found Clobber in writtenBetween.

[Florian Hahn via Phabricator via llvm-commits]

fhahn updated this revision to Diff 409964.
fhahn added a comment.

Update this patch to just scan if start & end are in the same block, otherwise conservatively return true. It might be easier to fix the mis-compile first and subsequently re-add cross-bb scanning.


Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D119929/new/

https://reviews.llvm.org/D119929

Files:
  llvm/lib/Transforms/Scalar/MemCpyOptimizer.cpp
  llvm/test/Transforms/MemCpyOpt/memcpy-invoke-memcpy.ll
  llvm/test/Transforms/MemCpyOpt/memcpy.ll
  llvm/test/Transforms/MemCpyOpt/nonlocal-memcpy-memcpy.ll

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