[all-commits] [llvm/llvm-project] 338fd2: [AArch64] Generate FADDP from shuffled fadd

[David Green via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 338fd211e7c36d7a2e0eee4c3530ed656c893a9d
      https://github.com/llvm/llvm-project/commit/338fd211e7c36d7a2e0eee4c3530ed656c893a9d
  Author: David Green <david.green at arm.com>
  Date:   2022-06-11 (Sat, 11 Jun 2022)

  Changed paths:
    M llvm/lib/Target/AArch64/AArch64ISelLowering.cpp
    M llvm/lib/Target/AArch64/AArch64InstrInfo.td
    M llvm/test/CodeGen/AArch64/faddp-half.ll
    M llvm/test/CodeGen/AArch64/faddp.ll

  Log Message:
  -----------
  [AArch64] Generate FADDP from shuffled fadd

As a follow up to D126686, this does the same fold for floating point
add and shuffle. In this case it is limited to reassoc either x[0]+x[1]
or x[1]+x[0] for both result[0] and results[1].

Differential Revision: https://reviews.llvm.org/D127087