[all-commits] [llvm/llvm-project] 992fad: [X86][AVX] Replace extract_subvector(broadcast(), ...

[Simon Pilgrim via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 992fad03e27586d7ffd03833c4609e29be5b60c8
      https://github.com/llvm/llvm-project/commit/992fad03e27586d7ffd03833c4609e29be5b60c8
  Author: Simon Pilgrim <llvm-dev at redking.me.uk>
  Date:   2020-12-18 (Fri, 18 Dec 2020)

  Changed paths:
    M llvm/lib/Target/X86/X86ISelLowering.cpp
    M llvm/test/CodeGen/X86/avx512-shuffles/partial_permute.ll
    M llvm/test/CodeGen/X86/oddshuffles.ll
    M llvm/test/CodeGen/X86/vec_int_to_fp.ll
    M llvm/test/CodeGen/X86/vector-fshl-rot-256.ll
    M llvm/test/CodeGen/X86/vector-rotate-256.ll
    M llvm/test/CodeGen/X86/vector-shift-shl-256.ll

  Log Message:
  -----------
  [X86][AVX] Replace extract_subvector(broadcast(), 0) folds with generic SimplifyDemandedVectorEltsForTargetNode handling.

Simplifies a few more cases, notably shuffle demanded elts cases.