From patchwork Tue Mar 21 04:53:40 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: LIU Zhiwei X-Patchwork-Id: 13182229 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org 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 smtp.lore.kernel.org (Postfix) with ESMTPS id E90FCC6FD1D for ; Tue, 21 Mar 2023 04:54:27 +0000 (UTC) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1peU0c-0004JV-Ts; Tue, 21 Mar 2023 00:54:07 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1peU0V-0004J3-8X for qemu-devel@nongnu.org; Tue, 21 Mar 2023 00:54:00 -0400 Received: from out30-97.freemail.mail.aliyun.com ([115.124.30.97]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1peU0R-0007nW-MH for qemu-devel@nongnu.org; Tue, 21 Mar 2023 00:53:58 -0400 X-Alimail-AntiSpam: AC=PASS; BC=-1|-1; BR=01201311R491e4; CH=green; DM=||false|; DS=||; FP=0|-1|-1|-1|0|-1|-1|-1; HT=ay29a033018046059; MF=zhiwei_liu@linux.alibaba.com; NM=1; PH=DS; RN=3; SR=0; TI=SMTPD_---0VeLfJe8_1679374426; Received: from L-PF1D6DP4-1208.hz.ali.com(mailfrom:zhiwei_liu@linux.alibaba.com fp:SMTPD_---0VeLfJe8_1679374426) by smtp.aliyun-inc.com; Tue, 21 Mar 2023 12:53:47 +0800 From: LIU Zhiwei To: qemu-devel@nongnu.org Cc: richard.henderson@linaro.org, LIU Zhiwei Subject: [PATCH] tcg/tcg: Avoid TS_DEAD for basic block ending Date: Tue, 21 Mar 2023 12:53:40 +0800 Message-Id: <20230321045340.838-1-zhiwei_liu@linux.alibaba.com> X-Mailer: git-send-email 2.23.0 MIME-Version: 1.0 Received-SPF: pass client-ip=115.124.30.97; envelope-from=zhiwei_liu@linux.alibaba.com; helo=out30-97.freemail.mail.aliyun.com X-Spam_score_int: -98 X-Spam_score: -9.9 X-Spam_bar: --------- X-Spam_report: (-9.9 / 5.0 requ) BAYES_00=-1.9, ENV_AND_HDR_SPF_MATCH=-0.5, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, UNPARSEABLE_RELAY=0.001, USER_IN_DEF_SPF_WL=-7.5 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org TS_DEAD means we will release the register allocated for this temporary. But at basic block ending, we can still use the allocted register. Signed-off-by: LIU Zhiwei --- tcg/tcg.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/tcg/tcg.c b/tcg/tcg.c index bb52bc060b..0c93e6e6f8 100644 --- a/tcg/tcg.c +++ b/tcg/tcg.c @@ -2822,7 +2822,7 @@ static void la_bb_end(TCGContext *s, int ng, int nt) case TEMP_FIXED: case TEMP_GLOBAL: case TEMP_TB: - state = TS_DEAD | TS_MEM; + state = TS_MEM; break; case TEMP_EBB: case TEMP_CONST: