[all-commits] [llvm/llvm-project] 5a16ed: [RISCV] Add +unaligned-scalar-mem to spacemit-x60 ...

[Luke Lau via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 5a16ed96c5362aa8e9610fa266d6f6202b19edc3
      https://github.com/llvm/llvm-project/commit/5a16ed96c5362aa8e9610fa266d6f6202b19edc3
  Author: Luke Lau <luke at igalia.com>
  Date:   2024-11-06 (Wed, 06 Nov 2024)

  Changed paths:
    M llvm/lib/Target/RISCV/RISCVProcessors.td

  Log Message:
  -----------
  [RISCV] Add +unaligned-scalar-mem to spacemit-x60 (#115125)

I can't find any official documentation on this, but from other
discussions[^1] and my own testing the spacemit-x60 seems to support
unaligned scalar loads and stores.

They seem to be performant, and just from a quick test we get a 2.45%
speedup on 500.perlbench_r on the Banana Pi F3[^2].

This would allow it to take advantage of #107548.

[^1]:
https://github.com/llvm/llvm-project/issues/110454#issuecomment-2382199460
[^2]: https://lnt.lukelau.me/db_default/v4/nts/32



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