Subject: Re: -mstrict-align on powerpc
To: Jason Thorpe <firstname.lastname@example.org>
From: Matt Thomas <email@example.com>
Date: 03/16/2003 12:19:33
At 11:48 AM 3/16/2003, Jason Thorpe wrote:
>On Sunday, March 16, 2003, at 10:41 AM, Nathan J. Williams wrote:
>>Why? The performance of unaligned fetches always sucks, even when they
>>don't trap. I think we should be going the other way: actively
>>preventing, if not forbidding, unaligned data structures even on CPUs
>>that don't require alignment, to improve performance.
>Is unaligned access really that bad on PowerPC CPUs that can do it?
No. It's almost as fast aligned accesses.
Matt Thomas Internet: firstname.lastname@example.org
3am Software Foundry WWW URL: http://www.3am-software.com/bio/matt/
Cupertino, CA Disclaimer: I avow all knowledge of this message