[all-commits] [llvm/llvm-project] 4f41ea: [X86] lowerShuffleAsVTRUNC - bit shift the offset ...

[Simon Pilgrim via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 4f41ea20167c8ae5e12887b95104a4697a430203
      https://github.com/llvm/llvm-project/commit/4f41ea20167c8ae5e12887b95104a4697a430203
  Author: Simon Pilgrim <llvm-dev at redking.me.uk>
  Date:   2022-12-14 (Wed, 14 Dec 2022)

  Changed paths:
    M llvm/lib/Target/X86/X86ISelLowering.cpp
    M llvm/test/CodeGen/X86/shuffle-strided-with-offset-256.ll
    M llvm/test/CodeGen/X86/shuffle-strided-with-offset-512.ll
    M llvm/test/CodeGen/X86/shuffle-vs-trunc-512.ll
    M llvm/test/CodeGen/X86/vector-interleaved-load-i16-stride-4.ll
    M llvm/test/CodeGen/X86/vector-interleaved-load-i8-stride-4.ll
    M llvm/test/CodeGen/X86/vector-interleaved-load-i8-stride-8.ll
    M llvm/test/CodeGen/X86/vector-shuffle-512-v32.ll
    M llvm/test/CodeGen/X86/x86-interleaved-access.ll

  Log Message:
  -----------
  [X86] lowerShuffleAsVTRUNC - bit shift the offset elements into place instead of shuffle

This helps avoid issues on non-BWI targets which can end up splitting the shuffles to 2 x 256-bit bitshifts of a smaller scalar width