From: Jeremy Fitzhardinge <jeremy@goop.org>
To: "H. Peter Anvin" <hpa@zytor.com>
Cc: Mathieu Desnoyers <mathieu.desnoyers@polymtl.ca>,
akpm@linux-foundation.org, linux-kernel@vger.kernel.org,
Andi Kleen <ak@muc.de>, Chuck Ebbert <cebbert@redhat.com>,
Christoph Hellwig <hch@infradead.org>
Subject: Re: [patch 4/7] Immediate Values - i386 Optimization
Date: Tue, 18 Sep 2007 15:27:52 -0700 [thread overview]
Message-ID: <46F050E8.5020206@goop.org> (raw)
In-Reply-To: <46F04D53.6040903@zytor.com>
H. Peter Anvin wrote:
> Allowing different registers should be doable, but if so, one would have
> to put 0: at the *end* of the instruction and use (0f)-4 instead, since
> the non-%eax forms are one byte longer.
>
OK, that's already a problem since its using "=r" as the constraint.
> This also seems "safer", since an imm32 is always the last thing in the
> instruction.
Good idea. If gas/gcc generates entirely the wrong addressing mode,
then we've got bigger problems.
J
next prev parent reply other threads:[~2007-09-18 22:27 UTC|newest]
Thread overview: 37+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-09-18 21:07 [patch 0/7] Immediate Values for 2.6.23-rc6-mm1 Mathieu Desnoyers
2007-09-18 21:07 ` [patch 1/7] Immediate Values - Architecture Independent Code Mathieu Desnoyers
2007-09-18 21:07 ` [patch 2/7] Immediate Values - Kconfig menu in EMBEDDED Mathieu Desnoyers
2007-09-18 22:02 ` Randy Dunlap
2007-09-19 11:13 ` Mathieu Desnoyers
2007-09-18 21:07 ` [patch 3/7] Immediate Values - Move Kprobes i386 restore_interrupt to kdebug.h Mathieu Desnoyers
2007-09-18 21:07 ` [patch 4/7] Immediate Values - i386 Optimization Mathieu Desnoyers
2007-09-18 21:51 ` Jeremy Fitzhardinge
2007-09-18 22:12 ` H. Peter Anvin
2007-09-18 22:27 ` Jeremy Fitzhardinge [this message]
2007-09-19 13:01 ` Mathieu Desnoyers
2007-09-19 16:03 ` Mathieu Desnoyers
2007-09-19 16:12 ` H. Peter Anvin
2007-09-19 17:30 ` Jeremy Fitzhardinge
2007-09-19 17:39 ` H. Peter Anvin
2007-09-19 18:31 ` Mathieu Desnoyers
2007-09-19 18:22 ` Mathieu Desnoyers
2007-10-20 16:47 ` Mathieu Desnoyers
2007-10-20 18:32 ` H. Peter Anvin
2007-10-22 15:40 ` Mathieu Desnoyers
2007-10-22 16:39 ` H. Peter Anvin
2007-10-22 9:53 ` Andi Kleen
2007-09-19 11:00 ` Mathieu Desnoyers
2007-09-18 22:14 ` Andi Kleen
2007-09-18 22:29 ` Jeremy Fitzhardinge
2007-09-18 22:33 ` H. Peter Anvin
2007-09-18 22:44 ` Andi Kleen
2007-09-19 11:08 ` Mathieu Desnoyers
2007-09-19 11:14 ` Andi Kleen
2007-09-19 10:59 ` Mathieu Desnoyers
2007-09-20 10:24 ` Denys Vlasenko
2007-09-21 13:31 ` Mathieu Desnoyers
2007-09-18 21:07 ` [patch 5/7] Immediate Values - Powerpc Optimization Mathieu Desnoyers
2007-09-18 21:07 ` [patch 6/7] Immediate Values - Documentation Mathieu Desnoyers
2007-09-18 21:07 ` [patch 7/7] Scheduler Profiling - Use Immediate Values Mathieu Desnoyers
-- strict thread matches above, loose matches on Subject: below --
2007-09-17 18:42 [patch 0/7] " Mathieu Desnoyers
2007-09-17 18:42 ` [patch 4/7] Immediate Values - i386 Optimization Mathieu Desnoyers
2007-09-18 6:04 ` Borislav Petkov
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