[LAD] Denormals / subnormals (again)

Gabriel M. Beddingfield gabrbedd at gmail.com
Tue Jan 3 03:23:11 UTC 2012

On 01/02/2012 07:22 PM, Carl Hetherington wrote:
> If you compile your code (e.g. a plugin) without -msse and -mfpmath=sse
> on the GCC command line you get *no* protection from denormals from the
> CPU. If they occur in your code, they will be very much slower than

-ffast-math doesn't work?

> If you compile your code with -msse and -mfpmath=sse, you have Ardour's
> protection from denormals. If the user's CPU supports it, you get there
> is no significant slowdown with denormals using this mode. However CPU
> support is "some later processors with SSE2", according to Intel.

Doesn't that translate to something like: Pentium 4, Pentium M, or Later.


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