[all-commits] [llvm/llvm-project] a9b644: [AArch64] Handle any extend whilst lowering addw/a...

[David Green via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: a9b6440eddde920920141d8ade9090273271a79b
      https://github.com/llvm/llvm-project/commit/a9b6440eddde920920141d8ade9090273271a79b
  Author: David Green <david.green at arm.com>
  Date:   2021-01-06 (Wed, 06 Jan 2021)

  Changed paths:
    M llvm/include/llvm/Target/TargetSelectionDAG.td
    M llvm/lib/Target/AArch64/AArch64InstrInfo.td
    M llvm/test/CodeGen/AArch64/arm64-neon-3vdiff.ll
    M llvm/test/CodeGen/AArch64/lowerMUL-newload.ll

  Log Message:
  -----------
  [AArch64] Handle any extend whilst lowering addw/addl/subw/subl

This adds an extra tablegen PatFrag, zanyext, which matches either any
extend or zext and uses that in the aarch64 backend to handle any
extends in addw/addl/subw/subl patterns.

Differential Revision: https://reviews.llvm.org/D93833