Re: ARM v5 branch prediction

On 20 Nov 2003 [EMAIL PROTECTED] (Vijay) wrote:
> Surely, a simple static branch predictor can make a big difference 
> for a non-superscalar CPU.

A big difference yes, but N times less than for an N scalar architecture.

> But the fact that performance can be  impacted in the case of small loops
> (3-4 instructions) is just a  bit bothering, if not annoying, especially
> when an application can have a number of them.

If you are really worried about small loop performance, you should be
unrolling anyway.

---druck

-- 
The ARM Club Free Software - http://www.armclub.org.uk/free/
The 32bit Conversions Page - http://www.quantumsoft.co.uk/druck/