From: Scott Wood <scottwood@freescale.com>
To: Kumar Gala <galak@kernel.crashing.org>
Cc: linuxppc-dev@ozlabs.org
Subject: Re: [PATCH] [POWERPC] Emulate isel (Integer Select) instruction
Date: Tue, 20 Nov 2007 11:54:16 -0600 [thread overview]
Message-ID: <20071120175416.GA4389@loki.buserror.net> (raw)
In-Reply-To: <Pine.LNX.4.64.0711192135460.24923@blarg.am.freescale.net>
On Mon, Nov 19, 2007 at 09:36:57PM -0600, Kumar Gala wrote:
> isel (Integer Select) is a new user space instruction in the
> PowerISA 2.04 spec. Not all processors implement it so lets emulate
> to ensure code built with isel will run everywhere.
Given that the instruction is meant to be a performance enhancement,
we should probably warn the first few times it's emulated, so the user
knows they should change their toolchain setup if possible.
-Scott
next prev parent reply other threads:[~2007-11-20 19:06 UTC|newest]
Thread overview: 24+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-11-20 3:36 [PATCH] [POWERPC] Emulate isel (Integer Select) instruction Kumar Gala
2007-11-20 17:54 ` Scott Wood [this message]
2007-11-20 21:01 ` Kumar Gala
2007-11-21 9:12 ` Benjamin Herrenschmidt
2007-11-21 14:19 ` Kumar Gala
2007-11-21 13:09 ` Geert Uytterhoeven
2007-11-21 14:22 ` Kumar Gala
2007-11-21 14:33 ` Geert Uytterhoeven
2007-11-21 15:34 ` Kumar Gala
2007-11-21 16:50 ` Geert Uytterhoeven
2007-11-21 19:22 ` Kumar Gala
2007-11-21 21:31 ` Paul Mackerras
2007-11-21 21:36 ` Paul Mackerras
2007-11-21 21:41 ` Scott Wood
2007-11-21 21:48 ` Kim Phillips
2007-11-21 21:38 ` Paul Mackerras
2007-11-27 14:56 ` Geert Uytterhoeven
2007-11-27 15:23 ` Olof Johansson
2007-11-28 10:49 ` Geert Uytterhoeven
2007-11-29 15:13 ` Geert Uytterhoeven
2007-12-14 8:12 ` Olof Johansson
2007-12-14 8:08 ` Kumar Gala
2007-12-14 8:17 ` Olof Johansson
2007-12-14 8:16 ` Olof Johansson
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