On 20/08/14 16:22, Wilco Dijkstra wrote:
Hi,
Various targets implement -momit-leaf-frame-pointer to avoid using a frame
pointer in leaf
functions. Currently the GCC mid-end does not provide a way of doing this, so
targets have resorted
to hacks. Typically this involves forcing flag_omit_frame
> Richard Henderson wrote:
> On 08/20/2014 08:22 AM, Wilco Dijkstra wrote:
> > 2. Change the mid-end to call _frame_pointer_required even when
> > !flag_omit_frame_pointer.
>
> Um, it does that already. At least as far as I can see from
> ira_setup_eliminable_regset and update_eliminables.
No, i
> From: gcc-ow...@gcc.gnu.org [mailto:gcc-ow...@gcc.gnu.org] On Behalf Of
> Wilco Dijkstra
>
> One could hack this a bit further and set flag_omit_frame_pointer = 2 to
> differentiate between a
> user setting and the override hack, but that's just making things even worse.
> So I see 3 possible
>
On 21/08/14 00:24, Richard Henderson wrote:
> On 08/20/2014 08:22 AM, Wilco Dijkstra wrote:
>> 2. Change the mid-end to call _frame_pointer_required even when
>> !flag_omit_frame_pointer.
>
> Um, it does that already. At least as far as I can see from
> ira_setup_eliminable_regset and update_elim
On 08/20/2014 08:22 AM, Wilco Dijkstra wrote:
> 2. Change the mid-end to call _frame_pointer_required even when
> !flag_omit_frame_pointer.
Um, it does that already. At least as far as I can see from
ira_setup_eliminable_regset and update_eliminables.
It turns out to be much easier to re-enable
