Received: from malur.postgresql.org ([217.196.149.56]) by arkaria.postgresql.org with esmtps (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.94.2) (envelope-from ) id 1tCqNf-00DfDR-RG for pgsql-committers@arkaria.postgresql.org; Mon, 18 Nov 2024 01:16:43 +0000 Received: from localhost ([127.0.0.1] helo=malur.postgresql.org) by malur.postgresql.org with esmtp (Exim 4.94.2) (envelope-from ) id 1tCqNb-002Gf5-JO for pgsql-committers@arkaria.postgresql.org; Mon, 18 Nov 2024 01:16:40 +0000 Received: from magus.postgresql.org ([2a02:c0:301:0:ffff::29]) by malur.postgresql.org with esmtps (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.94.2) (envelope-from ) id 1tCqNb-002Gex-By for pgsql-committers@lists.postgresql.org; Mon, 18 Nov 2024 01:16:39 +0000 Received: from mahout.postgresql.org ([2001:4800:3e1:1::227]) by magus.postgresql.org with esmtps (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.94.2) (envelope-from ) id 1tCqNY-002UiX-61 for pgsql-committers@lists.postgresql.org; Mon, 18 Nov 2024 01:16:39 +0000 Received: from gemulon.postgresql.org ([2001:4800:3e1:1::198]) by mahout.postgresql.org with esmtps (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.94.2) (envelope-from ) id 1tCqNX-007cIq-L5 for pgsql-committers@lists.postgresql.org; Mon, 18 Nov 2024 01:16:35 +0000 Received: from localhost ([127.0.0.1] helo=gemulon.postgresql.org) by gemulon.postgresql.org with esmtp (Exim 4.94.2) (envelope-from ) id 1tCqNW-002KW4-8G for pgsql-committers@lists.postgresql.org; Mon, 18 Nov 2024 01:16:34 +0000 Content-Type: multipart/mixed; boundary="===============1880750360482462190==" MIME-Version: 1.0 From: Michael Paquier To: pgsql-committers@lists.postgresql.org Subject: pgsql: Optimize pg_memory_is_all_zeros() in memutils.h X-Auto-Response-Suppress: All Auto-Submitted: auto-generated Message-Id: Date: Mon, 18 Nov 2024 01:16:34 +0000 List-Id: List-Help: List-Subscribe: List-Post: List-Owner: List-Archive: Archived-At: Precedence: bulk --===============1880750360482462190== Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: base64 T3B0aW1pemUgcGdfbWVtb3J5X2lzX2FsbF96ZXJvcygpIGluIG1lbXV0aWxzLmgKCnBnX21lbW9y eV9pc19hbGxfemVyb3MoKSBpcyBjdXJyZW50bHkgaW1wbGVtZW50ZWQgdG8gZG8gb25seSBhCmJ5 dGUtcGVyLWJ5dGUgY29tcGFyaXNvbi4gIFdoaWxlIGJlaW5nIHN1ZmZpY2llbnQgZm9yIGl0cyBl eGlzdGluZwpjYWxsZXJzIGZvciBwZ3N0YXRzIGVudHJpZXMsIGl0IGNvdWxkIGxlYWQgdG8gcGVy Zm9ybWFuY2UgcmVncmVzc2lvbnMKc2hvdWxkIGl0IGJlIHVzZWQgZm9yIGxhcmdlciBtZW1vcnkg YXJlYXMsIGxpa2UgOGtCIGJsb2Nrcywgb3IgZXZlbgpmdXR1cmUgY29tbWl0cy4KClRoaXMgY29t bWl0IG9wdGltaXplcyB0aGUgaW1wbGVtZW50YXRpb24gb2YgdGhpcyBmdW5jdGlvbiB0byBiZSBt b3JlCmVmZmljaWVudCBmb3IgbGFyZ2VyIHNpemVzLCB3cml0dGVuIGluIGEgd2F5IHNvIHRoYXQg Y29tcGlsZXJzIGNhbgpvcHRpbWl6ZSB0aGUgY29kZS4gIFRoaXMgaXMgcG9ydGFibGUgYWNyb3Nz IDMyYiBhbmQgNjRiIGFyY2hpdGVjdHVyZXMuCgpUaGUgaW1wbGVtZW50YXRpb24gaGFuZGxlcyB0 aHJlZSBjYXNlcywgZGVwZW5kaW5nIG9uIHRoZSBzaXplIG9mIHRoZQppbnB1dCBwcm92aWRlZDoK KiBJZiBsZXNzIHRoYW4gc2l6ZW9mKHNpemVfdCksIGRvIGEgc2ltcGxlIGJ5dGUtYnktYnl0ZSBj b21wYXJpc29uLgoqIElmIGJldHdlZW4gc2l6ZW9mKHNpemVfdCkgYW5kIChzaXplb2Yoc2l6ZV90 KSAqIDggLSAxKToKKiogUGhhc2UgMTogYnl0ZS1ieS1ieXRlIGNvbXBhcmlzb24sIHVudGlsIHRo ZSBwb2ludGVyIGlzIGFsaWduZWQuCioqIFBoYXNlIDI6IHNpemVfdCBjb21wYXJpc29ucywgd2l0 aCBhbGlnbmVkIHBvaW50ZXJzLCB1cCB0byB0aGUgbGFzdAogICBhbGlnbmVkIGxvY2F0aW9uIHBv c3NpYmxlLgoqKiBQaGFzZSAzOiBieXRlLWJ5LWJ5dGUgY29tcGFyaXNvbiwgdW50aWwgdGhlIGVu ZCBsb2NhdGlvbi4KKiBJZiBtb3JlIHRoYW4gKHNpemVvZihzaXplX3QpICogOCkgYnl0ZXMsIHRo aXMgaXMgdGhlIHNhbWUgYXMgY2FzZSAyCmV4Y2VwdCB0aGF0IGFuIGFkZGl0aW9uYWwgcGhhc2Ug aXMgcGxhY2VkIGJldHdlZW4gUGhhc2UgMSBhbmQgUGhhc2UgMiwKd2l0aCA4ICogc2l6ZW9mKHNp emVfdCkgY29tcGFyaXNvbnMgdXNpbmcgYml0d2lzZSBPUiwgdG8gZW5jb3VyYWdlCmNvbXBpbGVy cyB0byB1c2UgU0lNRCBpbnN0cnVjdGlvbnMgaWYgYXZhaWxhYmxlLgoKVGhlIGxhc3QgaW1wcm92 ZW1lbnQgcHJvdmVzIHRvIGJlIGF0IGxlYXN0IDMgdGltZXMgZmFzdGVyIHRoYW4gdGhlCnNpemVf dCBjb21wYXJpc29ucywgd2hpY2ggaXMgc29tZXRoaW5nIGN1cnJlbnRseSB1c2VkIGZvciB0aGUg YWxsLXplcm8KcGFnZSBjaGVjayBpbiBQYWdlSXNWZXJpZmllZEV4dGVuZGVkKCkuCgpUaGUgb3B0 aW1pemF0aW9uIHRyaWNrcyB0aGF0IHdvdWxkIGVuY291cmFnZSB0aGUgdXNlIG9mIFNJTUQKaW5z dHJ1Y3Rpb25zIGhhdmUgYmVlbiBzdWdnZXN0ZWQgYnkgRGF2aWQgUm93bGV5LgoKQXV0aG9yOiBC ZXJ0cmFuZCBEcm91dm90ClJldmlld2VkLWJ5OiBNaWNoYWVsIFBhcXVpZXIsIFJhbmllciBWaWxl bGEKRGlzY3Vzc2lvbjogaHR0cHM6Ly9wb3N0Z3IuZXMvbS9DQUFwSER2cTdQLUpnRmhndHhVUHFo YXZHLXFTRFZVaHlXYUVYOU04X01Ob3JGRWlqWkFAbWFpbC5nbWFpbC5jb20KCkJyYW5jaAotLS0t LS0KbWFzdGVyCgpEZXRhaWxzCi0tLS0tLS0KaHR0cHM6Ly9naXQucG9zdGdyZXNxbC5vcmcvcGcv Y29tbWl0ZGlmZi81YmUxZGFiZDJhZTBjZjQ4ZDkyN2FhZDM2M2M0YjY1NTA3ZTM4YjI1CgpNb2Rp ZmllZCBGaWxlcwotLS0tLS0tLS0tLS0tLQpzcmMvaW5jbHVkZS91dGlscy9tZW11dGlscy5oIHwg MTE5ICsrKysrKysrKysrKysrKysrKysrKysrKysrKysrKysrKysrKysrKysrLS0KMSBmaWxlIGNo YW5nZWQsIDExNiBpbnNlcnRpb25zKCspLCAzIGRlbGV0aW9ucygtKQoK --===============1880750360482462190==--