[LAD] denormal handling

[Erik de Castro Lopo]

Jens M Andreasen wrote:

> Although you are approximately right in many parts of this discussion,
> you are wrong on the cost of the CPU flags to round twards zero. The
> cost is nil.

My memory of this is that changing the FPU flags causes a pipeline flush.
If the happens inside an inner loop, this has a **huge** performance
penalty.

> Unlike other forms of Voodoo, we can neasure this.

Have you?

Erik
-- 
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Erik de Castro Lopo
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Orcad Express 9: "Its a nice demo but I wouldn't want to use it
on a day-to-day basis" -- me