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Re: [PATCH] Extend dse
- From: Revital1 Eres <ERES at il dot ibm dot com>
- To: Diego Novillo <dnovillo at acm dot org>
- Cc: Ayal Zaks <ZAKS at il dot ibm dot com>, Dorit Nuzman <DORIT at il dot ibm dot com>, gcc-patches at gcc dot gnu dot org, Victor Kaplansky <VICTORK at il dot ibm dot com>
- Date: Sun, 29 Apr 2007 09:54:08 +0300
- Subject: Re: [PATCH] Extend dse
gcc-patches-owner@gcc.gnu.org wrote on 26/04/2007 21:44:51:
> Revital1 Eres wrote on 03/23/07 07:34:
>
> > I would like to propose the following patch to mainline:
> >
> > http://gcc.gnu.org/ml/gcc-patches/2007-03/msg01257.html
>
> After you re-work the store-ccp extension that we discussed earlier
> today, this will probably not be needed. Regular DCE should catch these
> cases, right?
AFAICT regular DCE nor DSE eliminate cases like the following which this
patch aims to fix:
S[5].x = 0;
S[5].y = 0;
S[5].x = x;
S[5].y = y;
Thanks,
Revital