[all-commits] [llvm/llvm-project] 48d1a2: [DAG] Add SimplifyMultipleUseDemandedVectorElts he...

[Simon Pilgrim via All-commits]

  Branch: refs/heads/master
  Home:   https://github.com/llvm/llvm-project
  Commit: 48d1a2d6d06e41b6dc8ff7bdf4a1277120367dc7
      https://github.com/llvm/llvm-project/commit/48d1a2d6d06e41b6dc8ff7bdf4a1277120367dc7
  Author: Simon Pilgrim <llvm-dev at redking.me.uk>
  Date:   2020-06-22 (Mon, 22 Jun 2020)

  Changed paths:
    M llvm/include/llvm/CodeGen/TargetLowering.h
    M llvm/lib/CodeGen/SelectionDAG/TargetLowering.cpp
    M llvm/lib/Target/X86/X86ISelLowering.cpp

  Log Message:
  -----------
  [DAG] Add SimplifyMultipleUseDemandedVectorElts helper for SimplifyMultipleUseDemandedBits. NFCI.

We have many cases where we call SimplifyMultipleUseDemandedBits and demand specific vector elements, but all the bits from them - this adds a helper wrapper to handle this.