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Re: [ast-optimizer-branch] Simplification is pretty expensive

From: Jan Hubicka <jh at suse dot cz>
To: Diego Novillo <dnovillo at redhat dot com>
Cc: Jan Hubicka <jh at suse dot cz>, "gcc at gcc dot gnu dot org" <gcc at gcc dot gnu dot org>
Date: Tue, 4 Jun 2002 19:22:11 +0200
Subject: Re: [ast-optimizer-branch] Simplification is pretty expensive
References: <20020604151741.GH26038@tornado.toronto.redhat.com> <20020604155859.GM29372@atrey.karlin.mff.cuni.cz> <1023206713.25983.8.camel@tornado.toronto.redhat.com>

> On Tue, 2002-06-04 at 11:58, Jan Hubicka wrote:
> 
> > Note that Andreas is already tracking the branch, so he has some history
> > about the development, but since the simplification has been broken for
> > a while, there is just huge gap in the results.
> >
> Yes.  The huge slowdown started when we finally fixed simplification.  
> > > 
> > > At least the SPEC scores don't seem to have been affected.  It's
> > 
> > For Andrea's testing they definitly are.  The scores seems to be
> > consistently worse with -ftree-ssa
> >
> Odd.  -ftree-ssa didn't actually do *anything* until last week.

I tought it just enabled the simplification pass?

Honza

Follow-Ups:
- Re: [ast-optimizer-branch] Simplification is pretty expensive
  - From: Diego Novillo

References:
- [ast-optimizer-branch] Simplification is pretty expensive
  - From: Diego Novillo
- Re: [ast-optimizer-branch] Simplification is pretty expensive
  - From: Jan Hubicka
- Re: [ast-optimizer-branch] Simplification is pretty expensive
  - From: Diego Novillo

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