On Sun, 2005-20-11 at 00:23 +0200, Jussi Laako wrote: > On Wed, 2005-11-16 at 00:05 +0100, Florian Schmidt wrote: > > I think libDSP does prefetch and cache alignment, SIMD, yadayada :) > > > > I don't know though to which degree each one of the functions is > > optimized. Best to ask Jussi himself (CC'ed) :) > > Most of the time prefetch is left to compiler (works ok most of the > time), though it's done manually for some functions. > > For x86 there is handwritten SIMD (E3DNow! and SSE2/SSE3) version of > these operations, automatically used depending on runtime architecture: [snip]
Out of curiosity, how expensive is this runtime architechture check? -DR-
