On Tue, Nov 11, 2025 at 11:02:05AM +0000, Soumya AR wrote:
> Hi Jakub and Jonathan,
>
> Pinging on this again to ask for confirmation.
>
> As Matthew mentioned earlier, does it sound OK to have patches in this order:
>
> > - Have builtins used in libstdc++ (under SFINAE checks).
> > - Have builtins defined and emitting correct code for AArch64.
> > - Add the CAS pattern matching into an IFN.
You can't add uses of builtins to libstdc++ until those builtins are added.
So, you need to start with the builtins and make sure they work even on
non-aarch64. libstdc++ questions I'll defer to Jonathan or other libstdc++
folks.
Jakub
