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Re: Silly question about ARM thumb


On Tue, Feb 22, 2005 at 02:25:58PM +0100, Øyvind Harboe wrote:

> If the code is smaller and faster,

It's not.  It's slower.

> why aren't all ARM programs compiled w/ARM thumb?

> This posting quotes 20% code size decrease and 50% speed increase.
> 
> http://sourceware.org/ml/ecos-discuss/2002-11/msg00036.html

I don't think the speed increase is something that is seen in
the general case.  Perhaps the 20% size decrease allowed the
entire inner loop to stay resident in cache or something like
that?

-- 
Grant Edwards
grante@visi.com

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