[all-commits] [llvm/llvm-project] 4762c0: [X86] LowerFunnelShift - always lower vXi8 fshl by...

[Simon Pilgrim via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 4762c077e7102326306c7788494e3ea16e0f4cec
      https://github.com/llvm/llvm-project/commit/4762c077e7102326306c7788494e3ea16e0f4cec
  Author: Simon Pilgrim <llvm-dev at redking.me.uk>
  Date:   2022-01-23 (Sun, 23 Jan 2022)

  Changed paths:
    M llvm/lib/Target/X86/X86ISelLowering.cpp
    M llvm/test/CodeGen/X86/vector-fshl-128.ll
    M llvm/test/CodeGen/X86/vector-fshl-256.ll
    M llvm/test/CodeGen/X86/vector-fshl-512.ll

  Log Message:
  -----------
  [X86] LowerFunnelShift - always lower vXi8 fshl by constant amounts as unpack(y,x) << zext(z)

This can always be lowered as PMULLW+PSRLWI+PACKUSWB