From: Eric Lammerts <u-boot@lists.lammerts.org>
To: u-boot@lists.denx.de
Subject: [U-Boot] [PATCH 1/3] memcpy: use 32-bit copies if possible
Date: Sat, 10 Oct 2009 12:09:37 -0400 [thread overview]
Message-ID: <4AD0B1C1.4010006@lists.lammerts.org> (raw)
In-Reply-To: <20091008074114.GA30203@mail.gnudd.com>
On 10/08/09 03:41, Alessandro Rubini wrote:
> For memcpy all is well, for memset I have this problem:
> if (sizeof(long) > 4)
> cl |= cl << 32;
> string.c:416: warning: left shift count >= width of type
>
> (obviously there is no such shift in the generated code,
> since the condition is false at compile time).
>
> I think I'll stick to u32 for memset, unless I get better suggestions.
What about
if (sizeof(long) > 4)
cl |= (unsigned long long)cl << 32;
?
Eric
next prev parent reply other threads:[~2009-10-10 16:09 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
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 [this message]
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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