Hi Lucase, On Tue, Jul 10, 2018 at 05:05:26AM -0300, Lucas Teske wrote: > I would say, just remember that gr-osmosdr is not intended only to x86, > but also for ARM and other archs that does not even have SIMD. Also > there are some x86 nowadays that does not have AVX code. The LUT > solution is the "generic" one that works average on all platforms > (calculate on the fly for any arch that does not have SIMD conversion > will make a great performance loss).
I agree with the above statement. Having compile-time flags is not a solution, as most people will just use a distribution package - and distributions will have to compile the most general and non-cpu-specific code. The proper approach for this kind of problem is to have run-time CPU feature detection and then use the most optimal code for the given CPU. This is what we're e.g. dong in osmo-trx. -- - Harald Welte <lafo...@gnumonks.org> http://laforge.gnumonks.org/ ============================================================================ "Privacy in residential applications is a desirable marketing option." (ETSI EN 300 175-7 Ch. A6)
