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knc1 · 09-29-2013, 04:16 PM

For the K5 (both) with the exception of programs using SIMD code, you should get better results using VFP2 for the FPU specification (the 508 has dual VFP2 co-processors) than using neon.

Some of the newer GCC versions have an "auto-vectorize" feature, but I haven't kept track of which versions have good ARM SIMD (vector) support.

09-29-2013, 04:16 PM	#35
knc1 Going Viral Posts: 17,212 Karma: 18210809 Join Date: Feb 2012 Location: Central Texas Device: No K1, PW2, KV, KOA	For the K5 (both) with the exception of programs using SIMD code, you should get better results using VFP2 for the FPU specification (the 508 has dual VFP2 co-processors) than using neon. Some of the newer GCC versions have an "auto-vectorize" feature, but I haven't kept track of which versions have good ARM SIMD (vector) support. Last edited by knc1; 09-29-2013 at 05:03 PM.