Re: [PATCH 3/6] C-language equivalents of include/asm-*/bitops.h

Ian Molton <[email protected]> Wed, 25 Jan 2006 23:25:34 +0000

Newsgroups	gmane.linux.ports.mips.general,gmane.linux.kernel,gmane.linux.ports.ia64,gmane.linux.ports.hppa,gmane.linux.ports.ppc.devel,gmane.linux.ports.sh.devel,gmane.linux.ports.sparc,gmane.linux.ports.ultrapenguin
Organization	The Dragon Roost
Message-ID	<[email protected]>

Russell King wrote:

> This code generates more expensive shifts than our (ARMs) existing C
> version.  This is a backward step.
> 
> Basically, shifts which depend on a variable are more expensive than
> constant-based shifts.

arm26 will have the same problem here.