[all-commits] [llvm/llvm-project] 8fbc7f: [DAG] SimplifyMultipleUseDemandedBits - peek throu...

[Simon Pilgrim via All-commits]

  Branch: refs/heads/master
  Home:   https://github.com/llvm/llvm-project
  Commit: 8fbc7fd567f954908e476c9beb1bd78b4a7eebc5
      https://github.com/llvm/llvm-project/commit/8fbc7fd567f954908e476c9beb1bd78b4a7eebc5
  Author: Simon Pilgrim <llvm-dev at redking.me.uk>
  Date:   2020-01-31 (Fri, 31 Jan 2020)

  Changed paths:
    M llvm/lib/CodeGen/SelectionDAG/TargetLowering.cpp
    M llvm/test/CodeGen/X86/avg.ll
    M llvm/test/CodeGen/X86/avx512-insert-extract.ll
    M llvm/test/CodeGen/X86/vec_cast3.ll

  Log Message:
  -----------
  [DAG] SimplifyMultipleUseDemandedBits - peek through unused ISD::INSERT_SUBVECTOR subvectors

If we don't demand any elements of the inserted subvector then just skip it.