[all-commits] [llvm/llvm-project] 8ad8f4: [GlobalISel] Fold xor(cmp(pred, _, _), 1) -> cmp(i...

[AE via All-commits]

  Branch: refs/heads/master
  Home:   https://github.com/llvm/llvm-project
  Commit: 8ad8f484b63ca507417b58c9016d2761f2b1a1a8
      https://github.com/llvm/llvm-project/commit/8ad8f484b63ca507417b58c9016d2761f2b1a1a8
  Author: Amara Emerson <amara at apple.com>
  Date:   2020-09-01 (Tue, 01 Sep 2020)

  Changed paths:
    M llvm/include/llvm/CodeGen/GlobalISel/CombinerHelper.h
    M llvm/include/llvm/CodeGen/GlobalISel/MIPatternMatch.h
    M llvm/include/llvm/CodeGen/GlobalISel/Utils.h
    M llvm/include/llvm/Target/GlobalISel/Combine.td
    M llvm/lib/CodeGen/GlobalISel/CombinerHelper.cpp
    M llvm/lib/CodeGen/GlobalISel/Utils.cpp
    A llvm/test/CodeGen/AArch64/GlobalISel/prelegalizercombiner-invert-cmp.mir
    M llvm/test/CodeGen/AMDGPU/GlobalISel/divergent-control-flow.ll
    M llvm/test/CodeGen/AMDGPU/GlobalISel/sdiv.i64.ll
    M llvm/test/CodeGen/AMDGPU/GlobalISel/srem.i64.ll
    M llvm/test/CodeGen/AMDGPU/GlobalISel/udiv.i64.ll
    M llvm/test/CodeGen/AMDGPU/GlobalISel/urem.i64.ll

  Log Message:
  -----------
  [GlobalISel] Fold xor(cmp(pred, _, _), 1) -> cmp(inverse(pred), _, _)

This is needed for an upcoming change to how we translate conditional branches
which might generate these.

Differential Revision: https://reviews.llvm.org/D86383