[all-commits] [llvm/llvm-project] 0b9980: [X86] combineConcatVectorOps - IsConcatFree must c...

[Simon Pilgrim via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 0b998053db7c75c0427860d3947386013d2762ed
      https://github.com/llvm/llvm-project/commit/0b998053db7c75c0427860d3947386013d2762ed
  Author: Simon Pilgrim <llvm-dev at redking.me.uk>
  Date:   2022-06-27 (Mon, 27 Jun 2022)

  Changed paths:
    M llvm/lib/Target/X86/X86ISelLowering.cpp
    M llvm/test/CodeGen/X86/vselect-avx.ll

  Log Message:
  -----------
  [X86] combineConcatVectorOps - IsConcatFree must check extraction index

Identified in the regression reported by @alexfh on rGb5d7beeb9792 - IsConcatFree wasn't ensuring the subvector extraction index matched the position it would be concatenated back into.