From: Jan Hubicka <jh@suse.cz>
To: Richard Kenner <kenner@vlsi1.ultra.nyu.edu>
Cc: jh@suse.cz, gcc-patches@gcc.gnu.org
Subject: Re: spec2000 regression
Date: Wed, 15 Aug 2001 06:03:00 -0000 [thread overview]
Message-ID: <20010815150251.Y19872@atrey.karlin.mff.cuni.cz> (raw)
In-Reply-To: <10108151302.AA17923@vlsi1.ultra.nyu.edu>
> the problem is that actually code first sets the DECL_RTL and then
> calls set_mem_attributes, that calls get_alias_set, but it thinks that
> the alias set is already computed, but it isn't.
>
> I am now testing following patch. OK to install if it succeeds?
>
> I'd prefer to fix things so they don't set DECL_RTL first. MEM_ALIAS_SET
> is not a test to see if the alias set has been set. The alias set might
> have been zero in which case we *do* want to use it.
That what I was trying to do first, but there are number of places this
is happening and fixing each of it still keeps open door for possible
new bugs - it is natural to save the RTL to proper place first.
If I understand the purpose of original patch properly, it was hooting for
case variable gets unique class, but this class is recomputed several times
so it get several unique classes.
For class 0 this does not matter.
Honza
>
> So I think your change is wrong.
next prev parent reply other threads:[~2001-08-15 6:03 UTC|newest]
Thread overview: 24+ messages / expand[flat|nested] mbox.gz Atom feed top
2001-08-15 5:57 Richard Kenner
2001-08-15 6:03 ` Jan Hubicka [this message]
2001-08-15 6:36 ` Jason Merrill
2001-08-15 6:52 ` Jan Hubicka
2001-08-15 7:11 ` Jason Merrill
2001-08-15 7:13 ` Jan Hubicka
2001-08-15 7:36 ` Jan Hubicka
2001-08-15 8:04 ` Mark Mitchell
2001-08-16 5:58 ` Jan Hubicka
2001-08-16 6:09 ` Jason Merrill
2001-08-16 7:40 ` Jan Hubicka
2001-08-16 7:46 ` Jason Merrill
-- strict thread matches above, loose matches on Subject: below --
2001-08-15 11:28 Richard Kenner
2001-08-16 6:09 ` Jason Merrill
2001-08-22 7:53 ` Jason Merrill
2001-08-15 7:08 Richard Kenner
2001-08-15 7:10 ` Jan Hubicka
[not found] <20010815123730.P19872@atrey.karlin.mff.cuni.cz>
[not found] ` <m366bpsi91.fsf@prospero.cambridge.redhat.com>
2001-08-15 5:41 ` Jan Hubicka
2001-08-15 6:18 ` Jason Merrill
2001-08-15 6:40 ` Joseph S. Myers
2001-08-15 7:36 ` Jan Hubicka
2001-08-15 7:44 ` Joseph S. Myers
2001-08-15 11:04 ` Andreas Jaeger
2001-08-15 7:56 ` Mark Mitchell
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