From patchwork Fri Oct 8 07:29:11 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: liuhongt X-Patchwork-Id: 1538241 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: bilbo.ozlabs.org; dkim=pass (1024-bit key; unprotected) header.d=gcc.gnu.org header.i=@gcc.gnu.org header.a=rsa-sha256 header.s=default header.b=B8MCGv13; dkim-atps=neutral Authentication-Results: ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=gcc.gnu.org (client-ip=8.43.85.97; helo=sourceware.org; envelope-from=gcc-patches-bounces+incoming=patchwork.ozlabs.org@gcc.gnu.org; receiver=) Received: from sourceware.org (ip-8-43-85-97.sourceware.org [8.43.85.97]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (No client certificate requested) by bilbo.ozlabs.org (Postfix) with ESMTPS id 4HQfw8594Xz9sRN for ; Fri, 8 Oct 2021 18:29:43 +1100 (AEDT) Received: from server2.sourceware.org (localhost [IPv6:::1]) by sourceware.org (Postfix) with ESMTP id AD3903858034 for ; Fri, 8 Oct 2021 07:29:40 +0000 (GMT) DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org AD3903858034 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gcc.gnu.org; s=default; t=1633678180; bh=IU9IHJEZqqoGaJzXoZ8H1DMK3qlAqDqJ2rkAFix0znI=; h=To:Subject:Date:List-Id:List-Unsubscribe:List-Archive:List-Post: List-Help:List-Subscribe:From:Reply-To:From; b=B8MCGv13SzGrZNe6enyMBZMyCvhJ6A+pUal/N2YItKKR2SdLlMORaGAdTQb1SQaDZ l5oifR6PiZkt0xHh1Dj/Tc+nekWni1pjDWVzy6PRu86mf8np9vM1QPeeJ4TVUp8tBf Rt+nKRrV/vd6ORMM27jeRdpcA3V3dkmFxOAviYLw= X-Original-To: gcc-patches@gcc.gnu.org Delivered-To: gcc-patches@gcc.gnu.org Received: from mga11.intel.com (mga11.intel.com [192.55.52.93]) by sourceware.org (Postfix) with ESMTPS id CDC693858C2C for ; Fri, 8 Oct 2021 07:29:19 +0000 (GMT) DMARC-Filter: OpenDMARC Filter v1.4.1 sourceware.org CDC693858C2C X-IronPort-AV: E=McAfee;i="6200,9189,10130"; a="223863590" X-IronPort-AV: E=Sophos;i="5.85,356,1624345200"; d="scan'208";a="223863590" Received: from orsmga006.jf.intel.com ([10.7.209.51]) by fmsmga102.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 08 Oct 2021 00:29:13 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.85,356,1624345200"; d="scan'208";a="439842750" Received: from scymds01.sc.intel.com ([10.148.94.138]) by orsmga006.jf.intel.com with ESMTP; 08 Oct 2021 00:29:13 -0700 Received: from shliclel320.sh.intel.com (shliclel320.sh.intel.com [10.239.236.50]) by scymds01.sc.intel.com with ESMTP id 1987TBRm003485; Fri, 8 Oct 2021 00:29:12 -0700 To: gcc-patches@gcc.gnu.org Subject: [PATCH] [GCC-12] Mention O2 vectorization enabling. Date: Fri, 8 Oct 2021 15:29:11 +0800 Message-Id: <20211008072911.86497-1-hongtao.liu@intel.com> X-Mailer: git-send-email 2.18.1 X-Spam-Status: No, score=-11.5 required=5.0 tests=BAYES_00, GIT_PATCH_0, KAM_DMARC_NONE, KAM_DMARC_STATUS, KAM_LAZY_DOMAIN_SECURITY, SPF_HELO_NONE, SPF_NONE, TXREP autolearn=ham autolearn_force=no version=3.4.4 X-Spam-Checker-Version: SpamAssassin 3.4.4 (2020-01-24) on server2.sourceware.org X-BeenThere: gcc-patches@gcc.gnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Gcc-patches mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-Patchwork-Original-From: liuhongt via Gcc-patches From: liuhongt Reply-To: liuhongt Errors-To: gcc-patches-bounces+incoming=patchwork.ozlabs.org@gcc.gnu.org Sender: "Gcc-patches" --- htdocs/gcc-12/changes.html | 9 +++++++++ 1 file changed, 9 insertions(+) diff --git a/htdocs/gcc-12/changes.html b/htdocs/gcc-12/changes.html index 22839f2d..6e898db7 100644 --- a/htdocs/gcc-12/changes.html +++ b/htdocs/gcc-12/changes.html @@ -68,6 +68,15 @@ a work-in-progress.

General Improvements

+
    +
  • The vectorization is enabled in -O2, now -O2 is + equivalent to the original -O2 -ftree-vectorize + -fvect-cost-model=very-cheap. Note that default vect cost model has + been changed which may have a subtle effect, for example for the case with + -O2 -fopenmp #pragma omp parallel for simd. +
    • +
+

New Languages and Language specific improvements