From patchwork Wed Jul 1 15:21:56 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: LIU Zhiwei X-Patchwork-Id: 278942 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-10.0 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH, MAILING_LIST_MULTI, SIGNED_OFF_BY, SPF_HELO_NONE, SPF_PASS, UNPARSEABLE_RELAY, URIBL_BLOCKED, USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 26879C433DF for ; Wed, 1 Jul 2020 15:23:43 +0000 (UTC) Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 02A6B20760 for ; Wed, 1 Jul 2020 15:23:43 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 02A6B20760 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=c-sky.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Received: from localhost ([::1]:46552 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1jqeaM-0004j4-8l for qemu-devel@archiver.kernel.org; Wed, 01 Jul 2020 11:23:42 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:54174) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1jqeZ0-0003nV-My; Wed, 01 Jul 2020 11:22:19 -0400 Received: from smtp2200-217.mail.aliyun.com ([121.197.200.217]:36754) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1jqeYx-0004HQ-3O; Wed, 01 Jul 2020 11:22:18 -0400 X-Alimail-AntiSpam: AC=CONTINUE; BC=0.3766654|-1; CH=green; DM=|CONTINUE|false|; DS=CONTINUE|ham_system_inform|0.0130619-0.00109256-0.985846; FP=0|0|0|0|0|-1|-1|-1; HT=e02c03275; MF=zhiwei_liu@c-sky.com; NM=1; PH=DS; RN=8; RT=8; SR=0; TI=SMTPD_---.Hvum7gd_1593616921; Received: from L-PF1D6DP4-1208.hz.ali.com(mailfrom:zhiwei_liu@c-sky.com fp:SMTPD_---.Hvum7gd_1593616921) by smtp.aliyun-inc.com(10.147.41.120); Wed, 01 Jul 2020 23:22:02 +0800 From: LIU Zhiwei To: qemu-devel@nongnu.org, qemu-riscv@nongnu.org Subject: [PATCH 1/1] tcg/tcg-op: nonatomic_op should work with smaller memop Date: Wed, 1 Jul 2020 23:21:56 +0800 Message-Id: <20200701152156.1147-1-zhiwei_liu@c-sky.com> X-Mailer: git-send-email 2.23.0 MIME-Version: 1.0 Received-SPF: none client-ip=121.197.200.217; envelope-from=zhiwei_liu@c-sky.com; helo=smtp2200-217.mail.aliyun.com X-detected-operating-system: by eggs.gnu.org: First seen = 2020/07/01 11:22:02 X-ACL-Warn: Detected OS = Linux 3.x [generic] [fuzzy] X-Spam_score_int: -18 X-Spam_score: -1.9 X-Spam_bar: - X-Spam_report: (-1.9 / 5.0 requ) BAYES_00=-1.9, SPF_HELO_NONE=0.001, SPF_NONE=0.001, UNPARSEABLE_RELAY=0.001 autolearn=_AUTOLEARN X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: richard.henderson@linaro.org, wxy194768@alibaba-inc.com, wenmeng_zhang@c-sky.com, Alistair.Francis@wdc.com, palmer@dabbelt.com, LIU Zhiwei Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" Reserve MO_SIGN in load and extend another operator val according to memop. Thus, we can call tcg_gen_atomic_*_tl with a smaller memop. Signed-off-by: LIU Zhiwei --- tcg/tcg-op.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff --git a/tcg/tcg-op.c b/tcg/tcg-op.c index e60b74fb82..9a0870cb18 100644 --- a/tcg/tcg-op.c +++ b/tcg/tcg-op.c @@ -3189,7 +3189,8 @@ static void do_nonatomic_op_i32(TCGv_i32 ret, TCGv addr, TCGv_i32 val, memop = tcg_canonicalize_memop(memop, 0, 0); - tcg_gen_qemu_ld_i32(t1, addr, idx, memop & ~MO_SIGN); + tcg_gen_qemu_ld_i32(t1, addr, idx, memop); + tcg_gen_ext_i32(val, val, memop); gen(t2, t1, val); tcg_gen_qemu_st_i32(t2, addr, idx, memop); @@ -3232,7 +3233,8 @@ static void do_nonatomic_op_i64(TCGv_i64 ret, TCGv addr, TCGv_i64 val, memop = tcg_canonicalize_memop(memop, 1, 0); - tcg_gen_qemu_ld_i64(t1, addr, idx, memop & ~MO_SIGN); + tcg_gen_qemu_ld_i64(t1, addr, idx, memop); + tcg_gen_ext_i64(val, val, memop); gen(t2, t1, val); tcg_gen_qemu_st_i64(t2, addr, idx, memop);