Make PHP JIT to generate AVX2/AVX3 for performance improvement?

Hi Guys,

A quick question: is it possible to enable AVX2/AVX3 in PHP JIT
generated
code, and hence can get some performance improvement?
Just check the community first: if anyone has already tried that or
got
some experiences? before we dive into this investigation.
We are discussing if we could get some extra performance via new
AVX
instructions in PHP program execution.

Thanks.

AVX3 might be too new to just flat out generate for it. But
It can be quite simple for the JIT compiler to be aware of what
features flags are enabled on a CPU and generate compatible
instructions that will run on that CPU.

it is not really new, however the gain for most cases are not necessarily
significant but for specific cases.

For most usages in php, at a request level, the gain will be barely
measurable.

Also for latest avx, most hosting servers won't have them anyway.

I would think some specific APIs to prepare specific data to be
processed
using the best available runtime intrinsics would bring much more than
in
JIT.

As a sidenote, most libraries used by php, where larger intrinsics
vectors
bring something, implement them already.

best,
Pierre

Thanks Pierre and tag? (apologize if I take your name wrongly) for
the hint and information. We will carefully think about them...

So far, we are still in early investigation stage and would like to
hear opinions and ideas from our community.

Best,
Tony Su