[PATCH] D105390: [X86] Lower insertions into non-0'th 128-bit subvector as broadcast+blend (PR50971)

[Roman Lebedev via Phabricator via llvm-commits]

lebedev.ri created this revision.
lebedev.ri added reviewers: RKSimon, craig.topper, spatel, efriedma.
lebedev.ri added a project: LLVM.
Herald added subscribers: pengfei, hiraditya.
lebedev.ri requested review of this revision.

Broadcast is not worse than extract+insert of subvector.
https://godbolt.org/z/aPq98G6Yh


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D105390

Files:
  llvm/lib/Target/X86/X86ISelLowering.cpp
  llvm/test/CodeGen/X86/avx2-masked-gather.ll
  llvm/test/CodeGen/X86/avx512-insert-extract.ll
  llvm/test/CodeGen/X86/avx512-masked-memop-64-32.ll
  llvm/test/CodeGen/X86/insertelement-ones.ll
  llvm/test/CodeGen/X86/insertelement-shuffle.ll
  llvm/test/CodeGen/X86/masked_expandload.ll
  llvm/test/CodeGen/X86/masked_gather.ll
  llvm/test/CodeGen/X86/masked_load.ll

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