[PATCH][Binutils] aarch64: warn on unpredictable results for new rcpc3 instructions

[Richard Earnshaw (lists)]

On 07/06/2024 10:29, Matthieu Longo wrote:
> The previous patch for the feature rcpc3 introduced 4 new operations (ldiapp, stilp, ldapr, stlr).
> The specification mentions some cases of inputs causing unpredictable results. gas currently fails
> to diagnose them, and does not emit warnings. Even if the instruction encoding is valid, the
> developer probably wants to know for those cases that the instruction won't have the expected
> effect.
> - ldiapp & stilp:
>   * unpredictable load pair transfer with register overlap
>   * unpredictable transfer with writeback
> - ldapr & stlr:
>   * unpredictable transfer with writeback
> 
> This patch also completes the existing relevant tests.
> 
> Regression tested on aarch64-none-elf, and no regression found.
> 
> Ok for binutils-master? I don't have commit access so I need someone
> to commit on my behalf.
> 
> Regards,
> Matthieu.

Pushed, thanks.

R.