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Thu, 31 Jul 2025 02:22:05 -0700 (PDT) Precedence: bulk list-help: list-post: List-Id: internals.lists.php.net x-ms-reactions: disallow MIME-Version: 1.0 References: <73D7B135-ABF8-4EFC-BF16-EA26A5BD1B7A@cmpct.info> <5747e268-1176-4b87-ba58-2a767d45006b@mabe.berlin> <69df9695-6597-40cf-867a-99cbb1583f77@mabe.berlin> In-Reply-To: <69df9695-6597-40cf-867a-99cbb1583f77@mabe.berlin> Date: Thu, 31 Jul 2025 11:21:29 +0200 X-Gm-Features: Ac12FXzMoyME6tbSNXghlbCUnhApTOuWpExcCND_S_657RvkpObxiIqQ24jtXa8 Message-ID: Subject: Re: [PHP-DEV] [RFC] Drop support for 32bit builds To: Marc Bennewitz Cc: internals@lists.php.net Content-Type: text/plain; charset="UTF-8" From: divinity76@gmail.com (Hans Henrik Bergan) On Mon, 23 Jun 2025 at 13:30, Marc Bennewitz 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.