On 2019-05-27 19:02, Segher Boessenkool wrote:
> The simple and reliable way of forcing a frame pointer is to write
>
> if (__builtin_frame_address(0)) {
> /* Force a frame pointer for this function. */
> }
>
Thanks, this appears to work perfectly. But I don't see how it can
guarantee that "m" operands are never accessed through esp? I guess
ideally there would be a specific constraint for this seemingly common
scenario.
