[all-commits] [llvm/llvm-project] 4f41a7: [ARM] Fold fadd of vcmul into vcmla

[David Green via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 4f41a74d82c86e3ee548a8accaf11be7b986e218
      https://github.com/llvm/llvm-project/commit/4f41a74d82c86e3ee548a8accaf11be7b986e218
  Author: David Green <david.green at arm.com>
  Date:   2023-04-05 (Wed, 05 Apr 2023)

  Changed paths:
    M llvm/lib/Target/ARM/ARMInstrInfo.td
    M llvm/lib/Target/ARM/ARMInstrMVE.td
    M llvm/test/CodeGen/Thumb2/mve-complex-deinterleaving-mixed-cases.ll
    M llvm/test/CodeGen/Thumb2/mve-vcmla.ll

  Log Message:
  -----------
  [ARM] Fold fadd of vcmul into vcmla

This adds an extra tablegen combine for folding fadd(a, vcmul(b, c)) into
vcmla(a, b, c), so long as the fadd is allowed to contract.

Differential Revision: https://reviews.llvm.org/D147201