[all-commits] [llvm/llvm-project] 1d0d2d: [GlobalISel] Fold G_SHUFFLE_VECTOR with a single e...

[Vladislav Dzhidzhoev via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 1d0d2dfce7c8967fe58f28ec14a75b9186a3fc55
      https://github.com/llvm/llvm-project/commit/1d0d2dfce7c8967fe58f28ec14a75b9186a3fc55
  Author: Vladislav Dzhidzhoev <vdzhidzhoev at accesssoftek.com>
  Date:   2023-09-07 (Thu, 07 Sep 2023)

  Changed paths:
    M llvm/include/llvm/CodeGen/GlobalISel/CombinerHelper.h
    M llvm/include/llvm/Target/GlobalISel/Combine.td
    M llvm/lib/CodeGen/GlobalISel/CombinerHelper.cpp
    M llvm/lib/Target/AArch64/AArch64Combine.td
    M llvm/test/CodeGen/AArch64/GlobalISel/prelegalizercombiner-shuffle-vector.mir
    M llvm/test/CodeGen/AArch64/arm64-vcvt_f.ll
    M llvm/test/CodeGen/AArch64/ext-narrow-index.ll

  Log Message:
  -----------
  [GlobalISel] Fold G_SHUFFLE_VECTOR with a single element mask to G_EXTRACT_VECTOR_ELT

It introduces minor regression in arm64-vcvt_f.ll, which will be fixed
later.