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From: Alessandro Rubini <rubini-list@gnudd.com>
To: u-boot@lists.denx.de
Subject: [U-Boot] [PATCH 1/3] memcpy: use 32-bit copies if possible
Date: Wed, 7 Oct 2009 10:59:20 +0200	[thread overview]
Message-ID: <20091007085920.GA27225@mail.gnudd.com> (raw)
In-Reply-To: <200910070452.02225.vapier@gentoo.org>

> while 64bit isnt in today, might as well avoid unclean code from the
> start when possible.  in other words, used "unsigned int" rather
> than "u32" and cast to "unsigned long" rather than "int".

You are right. Will do. 

>> +		count /= 4;

> count >>= 2 ?  although gcc probably optimizes this properly.

gcc-4.0 for arm already turns it into a shift. I'll use
"sizeof(unsigned long)" in version 2.

Thanks
/alessandro

  reply	other threads:[~2009-10-07  8:59 UTC|newest]

Thread overview: 19+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2009-10-07  8:44 [U-Boot] [PATCH 0/3] make memcpy and memset 32-bit copies Alessandro Rubini
2009-10-07  8:44 ` [U-Boot] [PATCH 1/3] memcpy: use 32-bit copies if possible Alessandro Rubini
2009-10-07  8:52   ` Mike Frysinger
2009-10-07  8:59     ` Alessandro Rubini [this message]
2009-10-07  9:30     ` Wolfgang Denk
2009-10-08  7:41     ` Alessandro Rubini
2009-10-08  8:37       ` Wolfgang Denk
2009-10-08  9:05         ` Joakim Tjernlund
2009-10-08 12:49           ` Wolfgang Denk
2009-10-08 13:29             ` Joakim Tjernlund
2009-10-08 13:47               ` Wolfgang Denk
2009-10-10 16:09       ` Eric Lammerts
2009-10-07 14:35   ` Peter Tyser
2009-10-07 17:04     ` Mike Frysinger
2009-10-07  8:44 ` [U-Boot] [PATCH 2/3] memset: " Alessandro Rubini
2009-10-07  9:27   ` Wolfgang Denk
2009-10-07  8:44 ` [U-Boot] [PATCH 3/3] lcd: remove '#if 0' 32-bit scroll, now memcpy does it Alessandro Rubini
     [not found] ` <b03f28d4c4afa0c5c9f2421b7d260a0f3890cdcd.1254904388.git.rubini@unipv.it>
2009-10-08  5:23   ` [U-Boot] [PATCH 1/3] memcpy: use 32-bit copies if possible Chris Moore
2009-10-08  6:05     ` Mike Frysinger

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