From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [170.10.133.124]) by sourceware.org (Postfix) with ESMTPS id 86C4F3858401 for ; Mon, 3 Oct 2022 11:08:22 +0000 (GMT) DMARC-Filter: OpenDMARC Filter v1.4.1 sourceware.org 86C4F3858401 Authentication-Results: sourceware.org; dmarc=pass (p=none dis=none) header.from=redhat.com Authentication-Results: sourceware.org; spf=pass smtp.mailfrom=redhat.com DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1664795302; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=fgVrQ0ffUibp1/rLRq11fE7Xu9/vYWkfebccpTlSAIU=; b=ewFmWKllWsQqOjTlyiLMt1BBZ9ohx8Bg6U1oTBxQseBXhQw2YBnsAVl/AxfpLGB6MqPQxP s8RoVMIx8E2dVLx4mWYoqP51sVF9wD5W0QHfDQQEnaCogmGbYyeKTMwG9BA4jQl4BP7m2r y/kBu7GySh/Z4pGTKpWJiUNRPZftbl4= Received: from mimecast-mx02.redhat.com (mimecast-mx02.redhat.com [66.187.233.88]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id us-mta-480-3t95F4JCOlme7pYFdclSNQ-1; Mon, 03 Oct 2022 07:08:21 -0400 X-MC-Unique: 3t95F4JCOlme7pYFdclSNQ-1 Received: from smtp.corp.redhat.com (int-mx01.intmail.prod.int.rdu2.redhat.com [10.11.54.1]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx02.redhat.com (Postfix) with ESMTPS id 0FA6C833941 for ; Mon, 3 Oct 2022 11:08:21 +0000 (UTC) Received: from abulafia.quesejoda.com (unknown [10.39.194.103]) by smtp.corp.redhat.com (Postfix) with ESMTPS id 72BE940C206B; Mon, 3 Oct 2022 11:08:20 +0000 (UTC) Received: from abulafia.quesejoda.com (localhost [127.0.0.1]) by abulafia.quesejoda.com (8.17.1/8.17.1) with ESMTPS id 293B8Jev1076003 (version=TLSv1.3 cipher=TLS_AES_256_GCM_SHA384 bits=256 verify=NOT); Mon, 3 Oct 2022 13:08:19 +0200 Received: (from aldyh@localhost) by abulafia.quesejoda.com (8.17.1/8.17.1/Submit) id 293B8JCl1076002; Mon, 3 Oct 2022 13:08:19 +0200 From: Aldy Hernandez To: GCC patches Cc: Andrew MacLeod , Aldy Hernandez Subject: [COMMITTED] Avoid comparing ranges when sub-ranges is 0. Date: Mon, 3 Oct 2022 13:08:14 +0200 Message-Id: <20221003110815.1075975-3-aldyh@redhat.com> In-Reply-To: <20221003110815.1075975-1-aldyh@redhat.com> References: <20221003110815.1075975-1-aldyh@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 3.1 on 10.11.54.1 X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Transfer-Encoding: 8bit Content-Type: text/plain; charset="US-ASCII"; x-default=true X-Spam-Status: No, score=-11.5 required=5.0 tests=BAYES_00,DKIMWL_WL_HIGH,DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,GIT_PATCH_0,RCVD_IN_DNSWL_NONE,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 List-Id: There is nothing else to compare when the number of sub-ranges is 0. gcc/ChangeLog: * value-range.cc (irange::operator==): Early bail on m_num_ranges equal to 0. --- gcc/value-range.cc | 3 +++ 1 file changed, 3 insertions(+) diff --git a/gcc/value-range.cc b/gcc/value-range.cc index ddbcdd67633..e1066f4946e 100644 --- a/gcc/value-range.cc +++ b/gcc/value-range.cc @@ -1260,6 +1260,9 @@ irange::operator== (const irange &other) const if (m_num_ranges != other.m_num_ranges) return false; + if (m_num_ranges == 0) + return true; + for (unsigned i = 0; i < m_num_ranges; ++i) { tree lb = tree_lower_bound (i); -- 2.37.1