From: Jakub Jelinek <jakub@redhat.com>
To: Jan Beulich <jbeulich@novell.com>
Cc: binutils@sourceware.org
Subject: Re: [PATCH] RE: ill effect of <register>+<constant>
Date: Tue, 25 Sep 2007 16:23:00 -0000 [thread overview]
Message-ID: <20070925162803.GU2279@sunsite.mff.cuni.cz> (raw)
In-Reply-To: <46F94D60.76E4.0078.0@novell.com>
On Tue, Sep 25, 2007 at 05:03:12PM +0100, Jan Beulich wrote:
> >>> "Dave Korn" <dave.korn@artimi.com> 21.09.07 20:12 >>>
> >On 21 September 2007 18:31, Andreas Schwab wrote:
> >
> >> "Dave Korn" <dave.korn@artimi.com> writes:
> >>
> >>> I don't see how removing an unused and non-useful feature would really
> >>> count as "crippling". I'm not suggesting it should be disabled for ppc,
> >>> but for x86, really .... what could conceivably be the use?
> >>
> >> There are many more architectures besides ppc and x86. Almost all of
> >> them have numbered registers.
> >
> > Are you deliberately missing the point on purpose for rhetorical purposes?
> >I'm not suggesting it makes no sense for any architecture *except* x86. I
> >hope that is clearer. It certainly does make sense for anything with a big
> >set of idempotent numbered registers.
> >
> > But really, please: what's the use of being able to turn (for example) cx
> >into edi by adding a number to it?
>
> Here's a patch that disables such for x86 and ia64. Perhaps a few other
> architecture may want to follow.
Except that x86_64 has numbered registers as well, r8-r15.
Jakub
next prev parent reply other threads:[~2007-09-25 16:19 UTC|newest]
Thread overview: 24+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-09-21 14:06 Jan Beulich
2007-09-21 14:59 ` Andreas Schwab
2007-09-21 15:13 ` Jan Beulich
2007-09-21 15:23 ` Andreas Schwab
2007-09-21 15:24 ` Jan Beulich
2007-09-21 15:54 ` Dave Korn
2007-09-21 16:34 ` Andreas Schwab
2007-09-21 16:34 ` Dave Korn
2007-09-21 18:12 ` Andreas Schwab
2007-09-21 18:21 ` Dave Korn
2007-09-25 16:07 ` [PATCH] " Jan Beulich
2007-09-25 16:23 ` Jakub Jelinek [this message]
2007-09-25 16:31 ` H.J. Lu
2007-09-26 6:51 ` Jan Beulich
2007-09-25 16:30 ` Nick Clifton
2007-09-26 8:07 ` Jan Beulich
2007-09-26 8:35 ` Nick Clifton
2007-09-26 10:32 ` Jan Beulich
2007-09-21 19:04 ` Paul Koning
2007-09-21 19:24 ` Michael Hennebry
2007-09-22 12:27 ` Andreas Schwab
2007-09-24 4:58 ` Erik Christiansen
2007-09-24 15:16 ` Jan Beulich
2007-09-24 9:33 ` Jan Beulich
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