From patchwork Tue Oct 15 06:31:56 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Liu, Hongtao" X-Patchwork-Id: 1997210 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@legolas.ozlabs.org Authentication-Results: legolas.ozlabs.org; dkim=pass (2048-bit key; unprotected) header.d=intel.com header.i=@intel.com header.a=rsa-sha256 header.s=Intel header.b=XqJ8JCz6; dkim-atps=neutral Authentication-Results: legolas.ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=gcc.gnu.org (client-ip=8.43.85.97; helo=server2.sourceware.org; envelope-from=gcc-patches-bounces~incoming=patchwork.ozlabs.org@gcc.gnu.org; receiver=patchwork.ozlabs.org) Received: from server2.sourceware.org (server2.sourceware.org [8.43.85.97]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (secp384r1) server-digest SHA384) (No client certificate requested) by legolas.ozlabs.org (Postfix) with ESMTPS id 4XSPRD0hf1z1xvK for ; Tue, 15 Oct 2024 17:32:39 +1100 (AEDT) Received: from server2.sourceware.org (localhost [IPv6:::1]) by sourceware.org (Postfix) with ESMTP id 026153858023 for ; Tue, 15 Oct 2024 06:32:38 +0000 (GMT) X-Original-To: gcc-patches@gcc.gnu.org Delivered-To: gcc-patches@gcc.gnu.org Received: from mgamail.intel.com (mgamail.intel.com [198.175.65.10]) by sourceware.org (Postfix) with ESMTPS id 1E4E93858429 for ; Tue, 15 Oct 2024 06:32:04 +0000 (GMT) DMARC-Filter: OpenDMARC Filter v1.4.2 sourceware.org 1E4E93858429 Authentication-Results: sourceware.org; dmarc=pass (p=none dis=none) header.from=intel.com Authentication-Results: sourceware.org; spf=pass smtp.mailfrom=intel.com ARC-Filter: OpenARC Filter v1.0.0 sourceware.org 1E4E93858429 Authentication-Results: server2.sourceware.org; arc=none smtp.remote-ip=198.175.65.10 ARC-Seal: i=1; a=rsa-sha256; d=sourceware.org; s=key; t=1728973934; cv=none; b=JjCrV0odKsP4KYS7vONizEhhpQI/1S/gcX7qsYqZzOTaeDw7gM9Q/zMAOHZVv96rho+mzUBjz6d/FYDmGltIJLz/OsiBxGM4gVC0ZOa+fhDnewPkbY9BNcXalAAy0o1ZqZn9M4uKp1huEKakwN+pIPgr9TPRYdtwnkWACQaK5RM= ARC-Message-Signature: i=1; a=rsa-sha256; d=sourceware.org; s=key; t=1728973934; c=relaxed/simple; bh=ZwaAoTpfePbgyx1DfwQCah1rpGZmwflI88QhCc/8jM8=; h=DKIM-Signature:From:To:Subject:Date:Message-Id:MIME-Version; b=DV8cVBIkTmnRoqwl37vfWeM5k9AXWyxNdHQAdQIjFj22xRFutK7+SZ0Yybt3NEkhHt4LErz1cfrPjGAZRbeP+46yRg94+0XYDpKVglxyWGLZu8db0NmWTulvn7pOoykJ7n1dnBz5BTNuJQ5E57TPk1oQC7eX0DlSpE03eR1/lbo= ARC-Authentication-Results: i=1; server2.sourceware.org DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1728973925; x=1760509925; h=from:to:cc:subject:date:message-id:mime-version: content-transfer-encoding; bh=ZwaAoTpfePbgyx1DfwQCah1rpGZmwflI88QhCc/8jM8=; b=XqJ8JCz6IqeN5YCr3SfSfHcmfDdSG/5DLpTYfLlAGw8EBjVOSmhVJ/Kb Sbq1JMxY2C61Ze9u4piy60Yz9hsr8SUUDp4euFrsXmCXv6cP2A6RbtSzQ 3/lZomRVpPsKOJfnDnUbw5DnHvzUz4/zwqDMVSZ//OQ6O4S6oaZkOEqQQ Qv2u661yUOYHg0uXcZ61IHsB6OTPb0R5KTl59rWk6G0R1WYVmm5NaKz0C WGJtmDQWODyBLzlcHwnyqeW58cguzuP52dwEeKLu5cvgDMwXYnEzDl9TJ VdbasNo8FAM40H+AkSQlJsX382hbh58TyIntYgsdt3MrN2Z2qV2pvcrvP g==; X-CSE-ConnectionGUID: 7eUu0NMiTFeo8rJdbAmaew== X-CSE-MsgGUID: B4UQsLEdSiiNfwFS0NPePw== X-IronPort-AV: E=McAfee;i="6700,10204,11222"; a="45819354" X-IronPort-AV: E=Sophos;i="6.11,199,1725346800"; d="scan'208";a="45819354" Received: from orviesa008.jf.intel.com ([10.64.159.148]) by orvoesa102.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 14 Oct 2024 23:32:02 -0700 X-CSE-ConnectionGUID: gUfOEBLPRXSPJg538pqLMA== X-CSE-MsgGUID: o7uUaGA6Ro2AW1CPblDC8Q== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.11,204,1725346800"; d="scan'208";a="78610275" Received: from shliclel4217.sh.intel.com ([10.239.240.127]) by orviesa008.jf.intel.com with ESMTP; 14 Oct 2024 23:31:58 -0700 From: liuhongt To: gcc-patches@gcc.gnu.org Cc: crazylht@gmail.com, hjl.tools@gmail.com Subject: [PATCH][wwwdoc] Mention O2 vectorization enhancement. Date: Tue, 15 Oct 2024 14:31:56 +0800 Message-Id: <20241015063156.232666-1-hongtao.liu@intel.com> X-Mailer: git-send-email 2.31.1 MIME-Version: 1.0 X-Spam-Status: No, score=-12.2 required=5.0 tests=BAYES_00, DKIMWL_WL_HIGH, DKIM_SIGNED, DKIM_VALID, DKIM_VALID_AU, DKIM_VALID_EF, GIT_PATCH_0, SPF_HELO_NONE, SPF_NONE, TXREP autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on server2.sourceware.org X-BeenThere: gcc-patches@gcc.gnu.org X-Mailman-Version: 2.1.30 Precedence: list List-Id: Gcc-patches mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: gcc-patches-bounces~incoming=patchwork.ozlabs.org@gcc.gnu.org --- htdocs/gcc-15/changes.html | 10 ++++++++++ 1 file changed, 10 insertions(+) diff --git a/htdocs/gcc-15/changes.html b/htdocs/gcc-15/changes.html index 6dc46a52..8a238256 100644 --- a/htdocs/gcc-15/changes.html +++ b/htdocs/gcc-15/changes.html @@ -36,6 +36,16 @@ a work-in-progress.

General Improvements

+
    +
  • The default vectorizer cost model at -O2 has been enhanced + to handle unknown tripcount. But it still disables vectorization of loops + when any runtime check for data dependence or alignment is required, + it also disables vectorization of epilogue loops but otherwise is equal + to the cheap cost model. +
    • +
+ +

New Languages and Language specific improvements