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Re: Lots of sources for comercial and arcade games 1980-2002

Subject: Re: Lots of sources for comercial and arcade games 1980-2002
by LiveForIt on 2021/4/10 19:40:03

@ferrels

Quote:
SSE2-capable processor


Yes it pretty common to use SIMD instructions when you have it, it will make sense to use Altivec on X1000, and write some kind of work around for CPU’s that do not have it. I found actually using lookup tables can sometimes replace SIMD instructions. But anyway you can max get 64bit, while Altivec is 128bit, and can do parallel operations, so yes maybe not optimal, not too bad. What your looking at is 4 x 4bit, 2 x 8bit operations, or 1 x 16bit operations (16bit in, 64bit out.)

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