This is the mail archive of the
gcc-patches@gcc.gnu.org
mailing list for the GCC project.
Re: Automatic MMX/x87 FPU mode switching
On Wed, Jul 06, 2005 at 08:42:24AM +0200, Uros Bizjak wrote:
> Unfortunatelly, %st registers _are_ dead after call_insn. It looks that
> this is a show-stopper at the moment, as there is no way to tell register
> allocator which "other" registers are live (in fact "disabled") after
> function call.
Which is why I suggested that we handle this as a completely special
case like maybe_fix_stack_asms.
I prefer this sort of localized hack to one in propagate_one_insn.
r~