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Home » Developing U++ » U++ Developers corner » SSE2 and SVO optimization (Painter, memcpy....)
Re: BufferPainter::Clear() optimization [message #54050 is a reply to message #54049] Sun, 24 May 2020 11:56 Go to previous messageGo to previous message
Oblivion is currently offline  Oblivion
Messages: 1093
Registered: August 2007
Senior Contributor
Hello Mirek,

On Linux 5.4 and 5.6, with CLANG 10.0

TIMING SSE            : 119.41 ms - 119.41 ns ( 1.06 s  / 1000000 ), min:  0.00 ns, max:  1.00 ms, nesting: 0 - 1000000
TIMING Non SSE        : 232.41 ms - 232.41 ns ( 1.18 s  / 1000000 ), min:  0.00 ns, max:  1.00 ms, nesting: 0 - 1000000


On GCC (10.1): apparently _mm_storeu_si32 is yet to be implemented. : Confused

'_mm_storeu_si32' was not declared in this scope; did you mean '_mm_storeu_epi32'?
 (): 47 |  _mm_storeu_si32(rgba, PackRGBA(x, _mm_setzero_si128()));
 (): |  ^~~~~~~~~~~~~~~
 (): |  _mm_storeu_epi32



Possible workaround is given here:

https://stackoverflow.com/questions/58063933/how-can-a-sse2- function-be-missing-from-the-header-it-is-supposed-to-be-in


Best regards,
Oblivion


 
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