[all-commits] [llvm/llvm-project] 9cdba3: [X86] combineX86ShufflesRecursively - determine de...

[Simon Pilgrim via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 9cdba33337423f0083680c8f00251cc484b3898d
      https://github.com/llvm/llvm-project/commit/9cdba33337423f0083680c8f00251cc484b3898d
  Author: Simon Pilgrim <llvm-dev at redking.me.uk>
  Date:   2022-07-31 (Sun, 31 Jul 2022)

  Changed paths:
    M llvm/lib/Target/X86/X86ISelLowering.cpp
    M llvm/test/CodeGen/X86/fptoui-may-overflow.ll
    M llvm/test/CodeGen/X86/vector-trunc-usat.ll

  Log Message:
  -----------
  [X86] combineX86ShufflesRecursively - determine demanded elts to pass to getTargetShuffleInputs

Only PACKSS/PACKUS faux shuffles make use of the demanded elts at the moment, but this at least improves the handling of a couple of truncation patterns.