[all-commits] [llvm/llvm-project] 66395a: [X86] lowerV4F32Shuffle - prefer INSERTPS over SHU...

[Simon Pilgrim via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 66395ad94c3283d938a2957e7c7b439711764680
      https://github.com/llvm/llvm-project/commit/66395ad94c3283d938a2957e7c7b439711764680
  Author: Simon Pilgrim <llvm-dev at redking.me.uk>
  Date:   2026-03-14 (Sat, 14 Mar 2026)

  Changed paths:
    M llvm/lib/Target/X86/X86ISelLowering.cpp
    M llvm/test/CodeGen/X86/avx2-masked-gather.ll
    M llvm/test/CodeGen/X86/masked_gather_scatter_widen.ll
    M llvm/test/CodeGen/X86/masked_load.ll
    M llvm/test/CodeGen/X86/masked_store.ll
    M llvm/test/CodeGen/X86/masked_store_trunc.ll
    M llvm/test/CodeGen/X86/masked_store_trunc_ssat.ll
    M llvm/test/CodeGen/X86/masked_store_trunc_usat.ll
    M llvm/test/CodeGen/X86/vector-shuffle-combining.ll

  Log Message:
  -----------
  [X86] lowerV4F32Shuffle - prefer INSERTPS over SHUFPS when zeroing upper/lower v2f32 (#186612)

Followup to #186468 - use INSERTPS over SHUFPS if the implicit zeroing doesn't cross the the 64-bit halves



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