[all-commits] [llvm/llvm-project] 6d2a90: [X86] matchBinaryPermuteShuffle - match to X86ISD:...

[Simon Pilgrim via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 6d2a90bd8bf321df0d1c3f2953fcc51ce5344b13
      https://github.com/llvm/llvm-project/commit/6d2a90bd8bf321df0d1c3f2953fcc51ce5344b13
  Author: Simon Pilgrim <llvm-dev at redking.me.uk>
  Date:   2026-05-30 (Sat, 30 May 2026)

  Changed paths:
    M llvm/lib/Target/X86/X86ISelLowering.cpp
    M llvm/test/CodeGen/X86/vector-shuffle-combining-avx512vbmi2.ll

  Log Message:
  -----------
  [X86] matchBinaryPermuteShuffle - match to X86ISD::SHLD funnel shift patterns (REAPPLIED) (#200604)

Add matchShuffleAsVSHLD helper to recognise shuffle masks that can fold
to funnel shifts

Reapplied with fix for shift amount not being appropriately scaled -
test case added at #200569

Fixes #145276



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