[all-commits] [llvm/llvm-project] cb4fea: [SLP]Fix logical and/or reductions.

[Andrew V. Tischenko via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: cb4feae7bd56c50dd539d7437d9a6e3372a393a0
      https://github.com/llvm/llvm-project/commit/cb4feae7bd56c50dd539d7437d9a6e3372a393a0
  Author: Alexey Bataev <a.bataev at outlook.com>
  Date:   2021-10-27 (Wed, 27 Oct 2021)

  Changed paths:
    M llvm/lib/Transforms/Vectorize/SLPVectorizer.cpp
    M llvm/test/Transforms/SLPVectorizer/X86/reduction-logical.ll

  Log Message:
  -----------
  [SLP]Fix logical and/or reductions.

Need to emit select(cmp) instructions for poison-safe forms of select
ops. Currently alive reports that `Target is more poisonous than source`
for operations we generating for such instructions.

https://alive2.llvm.org/ce/z/FiNiAA

Differential Revision: https://reviews.llvm.org/D112562