[all-commits] [llvm/llvm-project] ada028: [AArch64] Add a tablegen pattern for UZP2.

[Alexandros Lamprineas via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: ada028c32f47ca84a0b7be5d1ab4e3c943f859a3
      https://github.com/llvm/llvm-project/commit/ada028c32f47ca84a0b7be5d1ab4e3c943f859a3
  Author: Alexandros Lamprineas <alexandros.lamprineas at arm.com>
  Date:   2021-12-21 (Tue, 21 Dec 2021)

  Changed paths:
    M llvm/lib/Target/AArch64/AArch64InstrInfo.td
    A llvm/test/CodeGen/AArch64/arm64-uzp2-combine.ll

  Log Message:
  -----------
  [AArch64] Add a tablegen pattern for UZP2.

Converts concat_vectors((trunc (lshr)), (trunc (lshr))) to UZP2
when the shift amount is half the width of the vector element.

Differential Revision: https://reviews.llvm.org/D116021