[PATCH] D150970: [MemCpyOpt] Use memcpy source directly if dest is known to be immutable from attributes

[Kohei Asano via Phabricator via llvm-commits]

khei4 updated this revision to Diff 529242.
khei4 marked 15 inline comments as done.
khei4 added a comment.

rebase
remove redundancy, 
fix wrong comments


CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D150970/new/

https://reviews.llvm.org/D150970

Files:
  llvm/include/llvm/Transforms/Scalar/MemCpyOptimizer.h
  llvm/lib/Transforms/Scalar/MemCpyOptimizer.cpp
  llvm/test/Transforms/MemCpyOpt/memcpy.ll

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