[all-commits] [llvm/llvm-project] a8874c: [AArch64][SVE] Add patterns for VSELECT of immedia...

[Eli Friedman via All-commits]

  Branch: refs/heads/master
  Home:   https://github.com/llvm/llvm-project
  Commit: a8874c76e8ae9ca67f6806f4c27ac8ba94232a21
      https://github.com/llvm/llvm-project/commit/a8874c76e8ae9ca67f6806f4c27ac8ba94232a21
  Author: Eli Friedman <efriedma at quicinc.com>
  Date:   2020-05-11 (Mon, 11 May 2020)

  Changed paths:
    M llvm/lib/Target/AArch64/AArch64SVEInstrInfo.td
    M llvm/lib/Target/AArch64/SVEInstrFormats.td
    A llvm/test/CodeGen/AArch64/sve-vselect-imm.ll

  Log Message:
  -----------
  [AArch64][SVE] Add patterns for VSELECT of immediates.

This covers forms involving "CPY (immediate, zeroing)".

This doesn't handle the case where the operands are reversed, and the
condition is freely invertible.  Not sure how to handle that.  Maybe a
DAGCombine.

Differential Revision: https://reviews.llvm.org/D79598