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From: "Diego Novillo" <dnovillo@google.com>
To: "Jan Hubicka" <hubicka@ucw.cz>
Cc: "Andrew MacLeod" <amacleod@redhat.com>,
	"Jan Hubicka" <jh@suse.cz>,
	        gcc-patches@gcc.gnu.org
Subject: Re: Continue stmt branch prediction
Date: Thu, 13 Mar 2008 14:12:00 -0000	[thread overview]
Message-ID: <b798aad50803130712w2bec7c02iaa31460244eb0631@mail.gmail.com> (raw)
In-Reply-To: <20080313013740.GO24550@atrey.karlin.mff.cuni.cz>

On Wed, Mar 12, 2008 at 18:37, Jan Hubicka <hubicka@ucw.cz> wrote:

> This seems bit hackish way
>  to me to save one case label in DCE: DCE is a bit special among the
>  early passes in a way that it does worry about more side effects of
>  statements beside the usual operands+semantics of statements all the
>  other propagation passes are about.  DCE has to know all GIMPLE
>  statement types (and it just aborts on any new). I would tend to argue
>  that with exception of DCE we can hardly come with early scalar cleanup
>  pass that really do care here and will need to special case MODIFY_EXPR
>  statement.

Hm, good point.  Let's leave it as a special instruction then.


Diego.

  parent reply	other threads:[~2008-03-13 14:12 UTC|newest]

Thread overview: 27+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2008-02-09 20:59 Jan Hubicka
2008-02-10 14:00 ` Diego Novillo
2008-02-10 15:49   ` Jan Hubicka
2008-02-11  2:51     ` Diego Novillo
2008-02-11  8:21       ` Jan Hubicka
2008-02-11 22:42 ` Andrew MacLeod
2008-02-14 15:31   ` Jan Hubicka
2008-02-14 15:38     ` Richard Guenther
2008-02-14 17:49       ` Jan Hubicka
2008-02-14 18:27         ` Andrew MacLeod
2008-02-14 19:12           ` Jan Hubicka
2008-02-14 15:45     ` Andrew MacLeod
2008-02-14 18:11       ` Jan Hubicka
2008-03-05 18:33   ` Jan Hubicka
2008-03-05 22:10     ` Diego Novillo
2008-03-05 22:28       ` Jan Hubicka
2008-03-12 17:54         ` Diego Novillo
2008-03-13  1:38           ` Jan Hubicka
2008-03-13  1:41             ` Jan Hubicka
2008-03-13  9:21             ` Richard Guenther
2008-03-13 14:12             ` Diego Novillo [this message]
2008-03-19  6:33 ` H.J. Lu
2008-03-19 11:25   ` Jan Hubicka
2008-03-19 11:37     ` Richard Guenther
2008-03-19 11:45       ` Jan Hubicka
2008-03-19 13:21         ` Richard Guenther
2008-02-20 22:53 Bradley Lucier

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