From: Andrew Haley <aph@redhat.com>
To: Jan Hubicka <jh@suse.cz>
Cc: ritu sabharwal <ritusabharwal@hotmail.com>, gcc@gcc.gnu.org
Subject: Re: How does the register allocator supports modulo scheduled code?
Date: Mon, 23 Dec 2002 09:18:00 -0000 [thread overview]
Message-ID: <15879.3804.981177.146258@cuddles.cambridge.redhat.com> (raw)
In-Reply-To: <20021223131439.GA24015@kam.mff.cuni.cz>
Jan Hubicka writes:
> >
> > We have done the modulo scheduling for the loops and added that to the
> > gcc instruction scheduler. We have replaced the loop block with our
> > scheduled code and it is working fine. But now when this is passed to the
> > gcc register allocator, we are getting errors in reload pass. Will the gcc
> > register allocator can not handle this modulo scheduled code?
>
> What kind of errors do you get exactly? In case the insturctions you
> produced match the constraints it should work just OK. In case they
> don't reload won't be able to fix up the hard registers.
Surely this can't work because reload will mess up the carefully
arranged schedule.
Andrew.
next prev parent reply other threads:[~2002-12-23 13:26 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2002-12-23 8:39 ritu sabharwal
2002-12-23 8:42 ` Jan Hubicka
2002-12-23 9:18 ` Andrew Haley [this message]
2002-12-23 9:25 ` Jan Hubicka
2002-12-23 17:43 ` Daniel Berlin
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=15879.3804.981177.146258@cuddles.cambridge.redhat.com \
--to=aph@redhat.com \
--cc=gcc@gcc.gnu.org \
--cc=jh@suse.cz \
--cc=ritusabharwal@hotmail.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for read-only IMAP folder(s) and NNTP newsgroup(s).