[all-commits] [llvm/llvm-project] e71955: [InstCombine] fold icmp + select pattern by distri...

[chenglin.bi via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: e719550e6f0161da597c9c0a0ceb60b3670ce2c2
      https://github.com/llvm/llvm-project/commit/e719550e6f0161da597c9c0a0ceb60b3670ce2c2
  Author: chenglin.bi <chenglin.bi at linaro.org>
  Date:   2022-12-03 (Sat, 03 Dec 2022)

  Changed paths:
    M llvm/lib/Transforms/InstCombine/InstCombineSelect.cpp
    M llvm/test/Transforms/InstCombine/select-cmp.ll

  Log Message:
  -----------
  [InstCombine] fold icmp + select pattern by distributive laws

`C ? (Y != X) : (Z != X) --> (C ? Y : Z) != X`
`C ? (Y == X) : (Z == X) --> (C ? Y : Z) == X`

https://alive2.llvm.org/ce/z/-frXfs

Reviewed By: spatel

Differential Revision: https://reviews.llvm.org/D139076