Re: [GIT PULL] s390 updates for 6.18 merge window

[Linus Torvalds]

On Mon, 29 Sept 2025 at 02:38, Alexander Gordeev <agordeev@xxxxxxxxxxxxx> wrote:
>
> - Make the compiler statement attribute "assume" available with
>   a new __assume macro

Ahh. Interesting. I hadn't realized this existed.

It does seem like a potentially dangerous feature - you get some very
confusing behavior if you misuse it, but looks quite useful for
describing the results of inline asm like you do.

I have definitely had cases where I would have liked to tell the
compiler that the result is already zero-extended or similar, and this
looks good for that.

           Linus