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Date: Tue, 31 Oct 2023 08:57:28 +0000
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To: "Su, Tao" <tao.su@intel.com>
Cc: PHP internals <internals@lists.php.net>
Content-Type: multipart/alternative; boundary="000000000000d60f800608ff5846"
Subject: Re: [PHP-DEV] Make PHP JIT to generate AVX2/AVX3 for performance improvement?
From: fenniclog@gmail.com (tag Knife)

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> 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.

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