From: Jan Hubicka <jh@suse.cz>
To: Olivier Hainque <hainque@ACT-Europe.FR>
Cc: Jan Hubicka <jh@suse.cz>, Michael Matz <matz@suse.de>, gcc@gcc.gnu.org
Subject: Re: Question on fixup_abnormal_edges
Date: Tue, 01 Oct 2002 09:08:00 -0000 [thread overview]
Message-ID: <20021001160812.GK29411@kam.mff.cuni.cz> (raw)
In-Reply-To: <20021001174435.A16300@berlin.int.act-europe.fr>
> Jan Hubicka wrote:
> > This looks like a bug in caller save code. It caller saves around the
> > noreturn call that is useless. I guess the proper fix is to look for
> > REG_NORETURN note in caller save code and suppress generation of the
> > sequence when it happends.
>
> I believe I see. Will check out and followup.
There is another problem when I think about that - there should not be
live register accross REG_NORETURN note and thus no caller save need.
Do you have any idea why the register is alive? Perhaps it came from
updatng the liveness - you can check by looking at .live and later
dumps.
Honza
>
> Thanks a lot, a real lot, for the help :)
>
> Kind Regards,
>
> Olivier
>
>
>
next prev parent reply other threads:[~2002-10-01 16:08 UTC|newest]
Thread overview: 41+ messages / expand[flat|nested] mbox.gz Atom feed top
2002-10-01 2:06 Olivier Hainque
2002-10-01 2:08 ` Jan Hubicka
2002-10-01 2:57 ` Olivier Hainque
2002-10-01 3:00 ` Michael Matz
2002-10-01 3:03 ` Michael Matz
2002-10-01 3:40 ` Olivier Hainque
2002-10-01 4:23 ` Jan Hubicka
2002-10-01 6:49 ` Olivier Hainque
2002-10-01 7:02 ` Jan Hubicka
2002-10-01 7:08 ` Olivier Hainque
2002-10-01 7:12 ` Jan Hubicka
2002-10-01 8:44 ` Olivier Hainque
2002-10-01 9:08 ` Jan Hubicka [this message]
2002-10-01 9:46 ` Olivier Hainque
2002-10-01 12:24 ` Michael Matz
2002-10-02 14:11 ` Olivier Hainque
2002-10-03 6:20 ` Jan Hubicka
2002-10-03 6:26 ` Olivier Hainque
2002-10-03 6:51 ` Jan Hubicka
2002-10-03 8:06 ` Olivier Hainque
2002-10-03 8:19 ` Jan Hubicka
2002-10-15 5:35 ` Olivier Hainque
2002-10-15 17:03 ` Richard Henderson
2002-10-16 2:58 ` Olivier Hainque
2002-10-16 4:02 ` Michael Matz
2002-10-16 4:06 ` Jan Hubicka
2002-10-16 4:45 ` Michael Matz
2002-10-16 5:01 ` Jan Hubicka
2002-10-16 10:29 ` Richard Henderson
2002-10-16 10:26 ` Richard Henderson
2002-10-01 4:43 ` Michael Matz
2002-10-01 4:46 ` Jan Hubicka
2002-10-15 6:10 Richard Kenner
2002-10-15 7:47 ` Michael Matz
2002-10-15 9:25 ` Michael Matz
2002-10-16 0:31 Richard Kenner
2002-10-16 2:31 ` Richard Henderson
2002-10-16 7:08 Richard Kenner
2002-10-21 11:50 ` Jeff Law
2002-10-21 11:54 ` David S. Miller
2002-10-16 7:12 Richard Kenner
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