------- Comment #10 from pinskia at gcc dot gnu dot org 2008-12-16 02:08
-------
(In reply to comment #9)
> Andrew,
>
> What is your point here?
My point here is that currently we do:
gi->frame_related =
(base == frame_pointer_rtx) || (base == hard_frame_pointer_rtx);
But if we change it to be:
gi->frame_related =
(base == frame_pointer_rtx) || (base == hard_frame_pointer_rtx)
|| (base == arg_pointer_rtx && fixed_regs[ARG_POINTER_REGNUM]);
It would delete the store (at least in a 4.3 based compiler). arg_pointer_rtx
is the incoming argument space so if it is a fixed register it will be also
frame related and we can safely delete the stores to this space.
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=30271
