[PATCH] D95779: [X86][AVX512] Support variable-index vector insertion on AVX512 targets

[Simon Pilgrim via Phabricator via llvm-commits]

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

With predicate masks, AVX512 can efficiently perform variable-index vector insertion with 2 broadcasts + 1 comparison, avoiding a lot of aliased memory traffic.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D95779

Files:
  llvm/lib/Target/X86/X86ISelLowering.cpp
  llvm/test/CodeGen/X86/avx512-insert-extract.ll
  llvm/test/CodeGen/X86/insertelement-var-index.ll

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