[PATCH] D62263: [DAGCombine][X86][AArch64][AMDGPU] (x - y) + -1 -> add (xor y, -1), x fold

[Roman Lebedev via Phabricator via llvm-commits]

lebedev.ri updated this revision to Diff 201697.
lebedev.ri added a comment.

Rebased, NFC.


Repository:
  rL LLVM

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D62263/new/

https://reviews.llvm.org/D62263

Files:
  lib/CodeGen/SelectionDAG/DAGCombiner.cpp
  test/CodeGen/AArch64/xor.ll
  test/CodeGen/AMDGPU/llvm.amdgcn.s.barrier.ll
  test/CodeGen/X86/xor.ll

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