[PATCH] D57854: [InstCombine] Optimize `atomicrmw <op>, 0` into `load atomic` when possible

[Quentin Colombet via Phabricator via llvm-commits]

qcolombet updated this revision to Diff 185675.
qcolombet added a comment.

Update:

- Switch to listing valid ordering instead of invalid ones
- Don't apply the transformation on volatile atomicrmw


Repository:
  rL LLVM

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D57854/new/

https://reviews.llvm.org/D57854

Files:
  lib/Transforms/InstCombine/CMakeLists.txt
  lib/Transforms/InstCombine/InstCombineAtomicRMW.cpp
  lib/Transforms/InstCombine/InstCombineInternal.h
  test/Transforms/InstCombine/atomicrmw.ll

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