[Interest] MMX/3DNOW/SSE/SS2.... etc

[Thiago Macieira]

On sábado, 27 de julho de 2013 21:15:08, Guido Seifert wrote:
> Hi,
> what happens when I compile a Qt (version 4) with one of those options:
> MMX/3DNOW/SSE/SSE2/SSE3/SSSE3/SSE4.1/SSE4.2/AVX
> and then deploy the libs on a machine, which does not support one or more of
> them. Will I see this at once? Programs won't start? Or will they start and
> I get funny errors?

Nothing will happen. Those checks are for whether the compiler supports the 
feature. If it does, then some extra code is compiled and run-time checked to 
see if it can be used.

-- 
Thiago Macieira - thiago.macieira (AT) intel.com
  Software Architect - Intel Open Source Technology Center
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