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Re: [tree-ssa] Remove redundant labels

From: Jan Hubicka <hubicka at ucw dot cz>
To: Diego Novillo <dnovillo at redhat dot com>
Cc: Steven Bosscher <stevenb at suse dot de>,"gcc-patches at gcc dot gnu dot org" <gcc-patches at gcc dot gnu dot org>
Date: Thu, 19 Feb 2004 15:07:41 +0100
Subject: Re: [tree-ssa] Remove redundant labels
References: <200402191400.11394.stevenb@suse.de> <1077197693.3230.49.camel@localhost.localdomain>

> On Thu, 2004-02-19 at 08:00, Steven Bosscher wrote:
> 
> > 	* tree-cfg.c (cleanup_dead_labels): New function to remove
> > 	redundant labels.
> > 
> This is OK.  Notice any compile time speed up?

There is definitly code quality improvement out of this patch.
At least previously we kept switch destination labels separate even
tought they were leading to the same block confusing switch expansion
code considerably.  I've hit this yesterday when testing the CFG
expansion patch.

Thanks,
Honza
> 
> 
> Thanks.  Diego.

References:
- [tree-ssa] Remove redundant labels
  - From: Steven Bosscher
- Re: [tree-ssa] Remove redundant labels
  - From: Diego Novillo

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