FPU optimizations - AVX vs SSE
lazarus / 64-FPC development

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mercurhyo · 2020-03-02 19:10

I think the folowing article would may help FPC developpers team
around X64 architecture processors

https://techblog.lankes.org/2014/06/16/AVX-isnt-always-faster-than-
SEE/

Have a cool drink, between headaches, dear optimization masters!

cheers

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marcov · 2020-03-02 21:47

(and read between the lines that the timings are for Haswell)

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mercurhyo · 2020-03-02 21:56

one of my laptops is sandy bridge, yup @marcov and it sucks

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marcov · 2020-03-02 22:15

Quote from: mercurhyo on March 02, 2020, 10:56:05 pmone of my laptops
is sandy bridge, yup @marcov and it sucks 

Try sse shuffling (PSHUF*), compare with haswell, and feel better :-)