On Tue, Nov 5, 2024 at 12:00 PM Uros Bizjak <ubiz...@gmail.com> wrote:
>
> On Tue, Nov 5, 2024 at 11:43 AM Andreas Schwab <sch...@linux-m68k.org> wrote:
> >
> > On Nov 05 2024, Uros Bizjak wrote:
> >
> > > But what is the non-deprecated way to communicate the fact that SP
> > > changes, and possibly clobbers stack in the asm to the compiler?
> >
> > Since an asm statement is not allowed to change SP there is no need for
> > that.
>
> asm volatile ("pushfq; popfq %0" : "=r"(x));
>
> doesn't change SP at any sequence point, doesn't clobber the function
> frame, but the function using it shouldn't create redzone. How to
> communicate this to the compiler?"shouldn't use redzone" Uros.
