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Date: Fri, 10 Sep 2004 10:17:00 -0000
From: Jan Hubicka <hubicka@ucw.cz>
To: "H. J. Lu" <hjl@lucon.org>
Cc: gcc@gcc.gnu.org
Subject: Re: Redundant instructions in loop optimization for x86-64?
Message-ID: <20040910095023.GF378@atrey.karlin.mff.cuni.cz>
References: <20040910000026.GA25099@lucon.org>
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> It seems that gcc 3.4 and 4.0 generate redundant instructions in loop
> optimization for x86-64:
> 
> http://gcc.gnu.org/bugzilla/show_bug.cgi?id=17387
> 
> Does anyone know why?

It is a zero extension GCC believe to be essential.

Honza
> 
> 
> H.J.