[all-commits] [llvm/llvm-project] b71434: [AArch64] Avoid NEON ORR when NEON and SVE are una...

[Sander de Smalen via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: b71434f8b33b6538554a092155c7e8477b2899e1
      https://github.com/llvm/llvm-project/commit/b71434f8b33b6538554a092155c7e8477b2899e1
  Author: Sander de Smalen <sander.desmalen at arm.com>
  Date:   2024-06-03 (Mon, 03 Jun 2024)

  Changed paths:
    M llvm/lib/Target/AArch64/AArch64InstrInfo.cpp
    M llvm/test/CodeGen/AArch64/arm64-reg-copy-noneon.ll
    M llvm/test/CodeGen/AArch64/sve-streaming-mode-fixed-length-masked-load.ll
    M llvm/test/CodeGen/AArch64/sve-streaming-mode-test-register-mov.ll

  Log Message:
  -----------
  [AArch64] Avoid NEON ORR when NEON and SVE are unavailable (#93940)

For streaming-compatible functions with only +sme, we can't use
a NEON ORR (aliased as 'mov') for copies of Q-registers, so
we need to use a spill/fill instead.

This also fixes the fill, which should use the post-incrementing
addressing mode.



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