Tue, 02 Mar 2010 14:17:12 -0500, Nick Sabalausky wrote: > "retard" <[email protected]> wrote in message > news:[email protected]... >> Tue, 02 Mar 2010 15:49:02 +0000, dsimcha wrote: >> >>> Given that Walter has indicated that 64-bit support is on the agenda >>> for after D2 is finished and x87 is deprecated in 64-bit mode, will we >>> also see SSE(2) support in DMD in the relatively near future? If so, >>> will it be exposed as a compiler option even when compiling in 32-bit >>> mode? >>> >>> I've realized that this is kind of important for me since Intel >>> deprecated x87 on its Core 2 and Pentium 4 chips, meaning any old >>> school floating point code runs painfully slow compared to, say, an >>> AMD chip that still has a decent x87. >> >> SSE(2) ? Don't people already use SSE 4.2 and prepare for AVX? > > Yes. The ones who enjoy arbitrarily shrinking their potential user base.
Why not dynamic code path selection: if (cpu_capabilities && SSE4_2) run_fast_method(); else if (cpu_capabilities && SSE2) run_medium_fast_method(); else run_slow_method(); One could also use higher level design patterns like abstract factories here.
