From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 48364 invoked by alias); 27 Jul 2018 09:38:41 -0000 Mailing-List: contact gcc-patches-help@gcc.gnu.org; run by ezmlm Precedence: bulk List-Id: List-Archive: List-Post: List-Help: Sender: gcc-patches-owner@gcc.gnu.org Received: (qmail 48183 invoked by uid 89); 27 Jul 2018 09:38:40 -0000 Authentication-Results: sourceware.org; auth=none X-Spam-SWARE-Status: No, score=-26.9 required=5.0 tests=BAYES_00,GIT_PATCH_0,GIT_PATCH_1,GIT_PATCH_2,GIT_PATCH_3,SPF_FAIL autolearn=ham version=3.3.2 spammy= X-HELO: eggs.gnu.org Received: from eggs.gnu.org (HELO eggs.gnu.org) (208.118.235.92) by sourceware.org (qpsmtpd/0.93/v0.84-503-g423c35a) with ESMTP; Fri, 27 Jul 2018 09:38:39 +0000 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1fizCf-0006CN-S8 for gcc-patches@gcc.gnu.org; Fri, 27 Jul 2018 05:38:34 -0400 Received: from foss.arm.com ([217.140.101.70]:47226) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1fizCf-00069d-Jd for gcc-patches@gcc.gnu.org; Fri, 27 Jul 2018 05:38:29 -0400 Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.72.51.249]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id C05E51688; Fri, 27 Jul 2018 02:38:26 -0700 (PDT) Received: from e120077-lin.cambridge.arm.com (e120077-lin.cambridge.arm.com [10.2.207.74]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id 28BD63F575; Fri, 27 Jul 2018 02:38:26 -0700 (PDT) From: Richard Earnshaw To: gcc-patches@gcc.gnu.org Cc: Richard Earnshaw Subject: [PATCH 04/11] AArch64 - Add new option -mtrack-speculation Date: Fri, 27 Jul 2018 09:38:00 -0000 Message-Id: <1532684275-13041-5-git-send-email-Richard.Earnshaw@arm.com> In-Reply-To: <1532684275-13041-1-git-send-email-Richard.Earnshaw@arm.com> References: <1531154299-28349-1-git-send-email-Richard.Earnshaw@arm.com> <1532684275-13041-1-git-send-email-Richard.Earnshaw@arm.com> MIME-Version: 1.0 Content-Type: multipart/mixed; boundary="------------2.7.4" X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] [fuzzy] X-Received-From: 217.140.101.70 X-SW-Source: 2018-07/txt/msg01705.txt.bz2 This is a multi-part message in MIME format. --------------2.7.4 Content-Type: text/plain; charset=UTF-8; format=fixed Content-Transfer-Encoding: quoted-printable Content-length: 299 This patch doesn't do anything useful, it simply adds a new command-line option -mtrack-speculation to AArch64. Subsequent patches build on this. * config/aarch64/aarch64.opt (mtrack-speculation): New target option. --- gcc/config/aarch64/aarch64.opt | 4 ++++ 1 file changed, 4 insertions(+) --------------2.7.4 Content-Type: text/x-patch; name="0004-AArch64-Add-new-option-mtrack-speculation.patch" Content-Disposition: attachment; filename="0004-AArch64-Add-new-option-mtrack-speculation.patch" Content-Transfer-Encoding: quoted-printable Content-length: 548 diff --git a/gcc/config/aarch64/aarch64.opt b/gcc/config/aarch64/aarch64.opt index 1426b45..bc9b22a 100644 --- a/gcc/config/aarch64/aarch64.opt +++ b/gcc/config/aarch64/aarch64.opt @@ -214,3 +214,7 @@ Target RejectNegative Joined Enum(sve_vector_bits) Var(= aarch64_sve_vector_bits) mverbose-cost-dump Common Undocumented Var(flag_aarch64_verbose_cost) Enables verbose cost model dumping in the debug dump files. + +mtrack-speculation +Target Var(aarch64_track_speculation) +Generate code to track when the CPU might be speculating incorrectly. --------------2.7.4--