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From: "Woodhouse, David" <david.woodhouse@intel.com>
To: Kim Phillips <kim.phillips@freescale.com>
Cc: Russell King - ARM Linux <linux@arm.linux.org.uk>,
	Borislav Petkov <bp@alien8.de>,
	Andrew Morton <akpm@linux-foundation.org>,
	Daniel Santos <daniel.santos@pobox.com>,
	David Rientjes <rientjes@google.com>,
	Rusty Russell <rusty@rustcorp.com.au>,
	"linux-arm-kernel@lists.infradead.org" 
	<linux-arm-kernel@lists.infradead.org>,
	"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
	Rob Herring <robherring2@gmail.com>
Subject: Re: [RFC] arm: use built-in byte swap function
Date: Wed, 6 Feb 2013 09:02:04 +0000	[thread overview]
Message-ID: <1360141322.6066.4.camel@shinybook.infradead.org> (raw)
In-Reply-To: <20130205210436.670c62e26d2121330e87af35@freescale.com>

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On Tue, 2013-02-05 at 21:04 -0600, Kim Phillips wrote:
> gcc -Os emits calls to __bswapsi2 on those platforms to save space
> because they don't have the single rev byte swap instruction.

Is that the right thing for GCC to do in that situation?

If so, perhaps we should be *providing* __bswap[sd]i2 functions for it
to use?

If not, perhaps there should be a PR filed?

Or is our use case justifiably different to the general case of '-Os'?
If so, why?

-- 
                   Sent with MeeGo's ActiveSync support.

David Woodhouse                            Open Source Technology Centre
David.Woodhouse@intel.com                              Intel Corporation




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  reply	other threads:[~2013-02-06  9:02 UTC|newest]

Thread overview: 63+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2013-01-29  1:30 [RFC] arm: use built-in byte swap function Kim Phillips
2013-01-29  8:35 ` Borislav Petkov
2013-01-29 16:46   ` Woodhouse, David
2013-01-29 17:42     ` Borislav Petkov
2013-01-29 17:55       ` Woodhouse, David
2013-01-29 18:10         ` Borislav Petkov
2013-01-30 10:22           ` Woodhouse, David
2013-01-31  2:09             ` Kim Phillips
2013-01-31  6:44               ` Borislav Petkov
2013-01-31  9:28               ` Russell King - ARM Linux
2013-01-31 20:59                 ` Kim Phillips
2013-01-31 21:33                   ` Borislav Petkov
2013-01-31 22:11                   ` Woodhouse, David
2013-02-01  0:37                     ` [PATCH v4] " Kim Phillips
2013-02-01 10:46                       ` Russell King - ARM Linux
2013-02-01  1:17                   ` [RFC] " Russell King - ARM Linux
2013-02-01  7:33                     ` Woodhouse, David
2013-02-06  3:04                       ` Kim Phillips
2013-02-06  9:02                         ` Woodhouse, David [this message]
2013-02-07  1:19                           ` Kim Phillips
2013-02-07 10:19                             ` Will Newton
2013-02-07 10:43                               ` Catalin Marinas
2013-02-07 18:13                             ` Russell King - ARM Linux
2013-02-08 17:25                               ` Woodhouse, David
2013-02-08 20:04                                 ` Nicolas Pitre
2013-02-08 22:40                                   ` Woodhouse, David
2013-02-08 22:47                                     ` Nicolas Pitre
2013-02-09  1:12                                       ` Kim Phillips
2013-02-09  3:16                                         ` Nicolas Pitre
2013-02-20  2:31                                           ` Kim Phillips
2013-02-20  2:38                                             ` Stephen Boyd
2013-02-20  3:17                                             ` Nicolas Pitre
2013-02-20 10:38                                               ` Woodhouse, David
2013-02-20 13:36                                                 ` Nicolas Pitre
2013-02-20 13:44                                                   ` Woodhouse, David
2013-02-20 14:06                                                     ` Nicolas Pitre
2013-02-20 14:53                                                       ` Woodhouse, David
2013-02-20 15:43                                                         ` Nicolas Pitre
2013-02-21  3:49                                                           ` Kim Phillips
2013-02-21  4:29                                                             ` Nicolas Pitre
2013-02-21  6:52                                                               ` Kim Phillips
2013-02-21 16:40                                                                 ` Nicolas Pitre
2013-02-22  2:33                                                                   ` Kim Phillips
2013-02-22  3:40                                                                     ` Nicolas Pitre
2013-02-23  1:40                                                                       ` [PATCH v6] " Kim Phillips
2013-02-23  2:40                                                                         ` Nicolas Pitre
2013-02-23 23:20                                                                         ` Woodhouse, David
2013-05-23 16:46                                                                           ` [PATCH v7] " Kim Phillips
2013-05-23 20:09                                                                             ` Nicolas Pitre
2013-05-23 23:13                                                                             ` Russell King - ARM Linux
2013-06-06 22:12                                                                               ` Russell King - ARM Linux
2013-06-06 22:23                                                                                 ` Borislav Petkov
2013-06-07  0:03                                                                                 ` Stephen Rothwell
2013-10-27  2:41                                                                             ` Nicolas Pitre
2013-11-05 21:45                                                                               ` Kim Phillips
2013-02-21 16:37                                                               ` [RFC] " Woodhouse, David
2013-02-21 17:27                                                                 ` Nicolas Pitre
2013-03-13 13:35                                             ` Woodhouse, David
2013-01-29 14:13 ` Russell King - ARM Linux
2013-01-29 14:43   ` Woodhouse, David
2013-01-29 14:53 ` Rob Herring
2013-01-29 15:10   ` Woodhouse, David
2013-01-31 11:44 Woodhouse, David

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