Re: [RFC] Drop support for 32bit builds
| From: | Hans Henrik Bergan | Date: | Thu, 31 Jul 2025 09:21:29 +0000 |
| Subject: | Re: [RFC] Drop support for 32bit builds | ||
| References: | 1 2 3 4 5 6 7 | Groups: | php.internals |
| Request: | Send a blank email to internals+get-128339@lists.php.net to get a copy of this message | ||
On Mon, 23 Jun 2025 at 13:30, Marc Bennewitz <marc@mabe.berlin> wrote:
>
> As you can see, the memory usage differences aren't that big but it's
> running much slower probably because of unavailable instruction sets on x32.
>
fwiw it's not the instruction set, it's mostly the registers, x86-64
have double the amount of general-purpose registers (8>16), thus less
stack pushing/popping on x64.