This is the mail archive of the
gcc@gcc.gnu.org
mailing list for the GCC project.
Re: Small extension to MD_SCHED hack
> On Tue, Oct 13, 1998 at 06:19:03PM +0200, Jan Hubicka wrote:
> > After playing a bit more with MD_SCHED macros I think that it is neccesary
> > to give some posibility to MD_SCHED macros to pick no instruction at given
> > cycle and force scheduler to wait.
>
> Is this not possible with MD_SCHED_VARIABLE_ISSUE already? Or does
> that happen at the beginning of the scan, only when we go back for more?
MD_SCHED_VARIABLE_ISSUE can say "I am full now", but can't say "I will not
accept this instruction". So at least one instruction must be accepted,
if I understand it correctly...
Situation where you don't want to accept more insns happends IMO just when
we go back for more and we don't need to wory about first pass...
Honza
>
>
> r~
--
OK. Lets make a signature file.
+-------------------------------------------------------------------------+
| Jan Hubicka (Jan Hubi\v{c}ka in TeX) hubicka@freesoft.cz |
| Czech free software foundation: http://www.freesoft.cz |
|AA project - the new way for computer graphics - http://www.ta.jcu.cz/aa |
| homepage: http://www.paru.cas.cz/~hubicka/, games koules, Xonix, fast |
| fractal zoomer XaoS, index of Czech GNU/Linux/UN*X documentation etc. |
+-------------------------------------------------------------------------+