[all-commits] [llvm/llvm-project] 18a497: [AArch64][SelectionDAG] Avoid cross-bank copy for ...

[Kieran B via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 18a49751d365d25e2f87a1a418bb5dae6592a0c1
      https://github.com/llvm/llvm-project/commit/18a49751d365d25e2f87a1a418bb5dae6592a0c1
  Author: Kieran B <kieran.bailey at arm.com>
  Date:   2026-07-30 (Thu, 30 Jul 2026)

  Changed paths:
    M llvm/lib/Target/AArch64/AArch64InstrInfo.td
    A llvm/test/CodeGen/AArch64/neon-scalar-vcvtfp2fx.ll

  Log Message:
  -----------
  [AArch64][SelectionDAG] Avoid cross-bank copy for NEON vcvtfp2fx result (#210275)

- Add SelectionDAG-only patterns for NEON vcvtfp2fx so integer result
select GPR instead of FPR, avoiding the need for cross-bank copies.
- Bitcast uses still select the FP/SIMD-register forms where available.
- Add testing for GPR-resulting and FPR-resulting patterns.
- Add missing tests in fp16_intrinsic_scalar_2op.ll:
test_vcvth_n_u64_f16_1 and test_vcvth_n_u64_f16_16.

A follow-up patch will also include the fix for GlobalIsel.



To unsubscribe from these emails, change your notification settings at https://github.com/llvm/llvm-project/settings/notifications