[fpc-devel] Detecting SSE and AVX compiler options

Jonas Maebe jonas at freepascal.org
Sun Feb 3 12:47:14 CET 2019

On 03/02/19 06:26, J. Gareth Moreton wrote:
> And similarly with AVX.  Even if we're stuck with just SSE2, assembler 
> improvements can be made over the Pascal code just by removing the call 
> to Trunc and replacing it with its single assembler command: "cvttsd2si 
> %xmm0,%rax".

The compiler already does that when the appropriate instruction set is 


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