[fpc-devel] Plans for 2022

[J. Gareth Moreton]

I have a passion for games programming so this one really rings close 
for me.  The tricky thing is that early SSE and AVX instructions have to 
fill and use the entire register - it's only AVX512 that starts to allow 
partial filling, so things like packed 3-dimensional vectors are a 
little difficult to manage.  One can't just add a dummy 4th component 
because then storage won't behave as expected.

Gareth aka. Kit

On 10/01/2022 03:08, Ryan Joseph via fpc-devel wrote:
>
>> On Jan 9, 2022, at 2:09 PM, J. Gareth Moreton via fpc-devel <fpc-devel at lists.freepascal.org> wrote:
>>
>> https://www.patreon.com/posts/60922821
> Your plans are vectorization are an important gain for linear algebra and games.
>
> Could you detect things like:
>
> var
>    a, b, c: TVec2;
> begin
>    c := a + b * V2(10, 10);
>
> where the vec2 type has operator overloads for common operations? This kind of thing is very common in graphics math and I bet there's some clever ways you could compress that operation down. Curious how the C++ compilers do this also...
>
> Regards,
> 	Ryan Joseph
>
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