On Sat, Jan 22, 2005 at 03:17:28PM +0100, Christian Schoenebeck wrote:
> I think for such an important piece like freeverb it might be worth to add
> architecture dependant assembly optimizations. E.g. with SSE(1) you simply
> have to change the SSE control register to get rid of the denormal problem.
> With that no denormal fixes for individual sample points are necessary
> anymore which definitely pays off in performance.
Agreed, but I'm not sure how doing that will affect the host - ie does
-mfpumath=SSE (or whatever the option is) always leave the FPU stack in a
sane state when control goes back to the host? I dont think it would
normally return the FPU to 387 mode, which might do bad things to the
host occasionally.
OTOH it might be fine, I dont understand the interaction with the 387 and
SSE.
- Steve
Received on Sat Jan 22 20:15:44 2005
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