[all-commits] [llvm/llvm-project] ffb5be: [X86] LowerBITREVERSE - support SSE-only GFNI i32/...

[Simon Pilgrim via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: ffb5bea2be9f966a39f243a7d8c2f48a1343cb4c
      https://github.com/llvm/llvm-project/commit/ffb5bea2be9f966a39f243a7d8c2f48a1343cb4c
  Author: Simon Pilgrim <llvm-dev at redking.me.uk>
  Date:   2024-04-11 (Thu, 11 Apr 2024)

  Changed paths:
    M llvm/lib/Target/X86/X86ISelLowering.cpp
    M llvm/test/CodeGen/X86/vector-bitreverse.ll

  Log Message:
  -----------
  [X86] LowerBITREVERSE - support SSE-only GFNI i32/i64 bitreverse

Support Tremont CPUs which don't have AVX but do have GFNI.

Noticed while trying to workout how to clean up the costmodel for GFNI bitreverse



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