[all-commits] [llvm/llvm-project] f5f7fd: [X86][SSE] combineX86ShuffleChain - remove unused ...

[Simon Pilgrim via All-commits]

  Branch: refs/heads/master
  Home:   https://github.com/llvm/llvm-project
  Commit: f5f7fd990e0e9c6f786d48d9a6ea832f9d706c1a
      https://github.com/llvm/llvm-project/commit/f5f7fd990e0e9c6f786d48d9a6ea832f9d706c1a
  Author: Simon Pilgrim <llvm-dev at redking.me.uk>
  Date:   2020-05-06 (Wed, 06 May 2020)

  Changed paths:
    M llvm/lib/Target/X86/X86ISelLowering.cpp

  Log Message:
  -----------
  [X86][SSE] combineX86ShuffleChain - remove unused shuffle(vzext_load(),undef) combine.

This should always be caught by the various VZEXT_MOVL handling in combineTargetShuffle and SimplifyDemandedVectorEltsForTargetNode.