From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from heian.cn.fujitsu.com (mail.cn.fujitsu.com [183.91.158.132]) by sourceware.org (Postfix) with ESMTP id 80D7B3851C25 for ; Mon, 7 Sep 2020 06:09:00 +0000 (GMT) DMARC-Filter: OpenDMARC Filter v1.3.2 sourceware.org 80D7B3851C25 Authentication-Results: sourceware.org; dmarc=none (p=none dis=none) header.from=cn.fujitsu.com Authentication-Results: sourceware.org; spf=none smtp.mailfrom=qianjh@cn.fujitsu.com X-IronPort-AV: E=Sophos;i="5.76,400,1592841600"; d="scan'208";a="98957862" Received: from unknown (HELO cn.fujitsu.com) ([10.167.33.5]) by heian.cn.fujitsu.com with ESMTP; 07 Sep 2020 14:08:57 +0800 Received: from G08CNEXMBPEKD04.g08.fujitsu.local (unknown [10.167.33.201]) by cn.fujitsu.com (Postfix) with ESMTP id C54E548990E1 for ; Mon, 7 Sep 2020 14:08:52 +0800 (CST) Received: from G08CNEXMBPEKD06.g08.fujitsu.local (10.167.33.206) by G08CNEXMBPEKD04.g08.fujitsu.local (10.167.33.201) with Microsoft SMTP Server (TLS) id 15.0.1497.2; Mon, 7 Sep 2020 14:08:54 +0800 Received: from G08CNEXMBPEKD06.g08.fujitsu.local ([fe80::b0c0:546b:7cba:57d4]) by G08CNEXMBPEKD06.g08.fujitsu.local ([fe80::b0c0:546b:7cba:57d4%14]) with mapi id 15.00.1497.006; Mon, 7 Sep 2020 14:08:50 +0800 From: "Qian, Jianhua" To: "gcc@gcc.gnu.org" Subject: A problem with one instruction multiple latencies and pipelines Thread-Topic: A problem with one instruction multiple latencies and pipelines Thread-Index: AdaE3LmqQp04Kq7RSFOq72+9+GlREw== Date: Mon, 7 Sep 2020 06:08:50 +0000 Message-ID: Accept-Language: zh-CN, en-US Content-Language: ja-JP X-MS-Has-Attach: X-MS-TNEF-Correlator: x-ms-exchange-transport-fromentityheader: Hosted x-originating-ip: [10.167.226.69] Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 MIME-Version: 1.0 X-yoursite-MailScanner-ID: C54E548990E1.A8E52 X-yoursite-MailScanner: Found to be clean X-yoursite-MailScanner-From: qianjh@cn.fujitsu.com X-Spam-Status: No, score=-3.6 required=5.0 tests=BAYES_00, KAM_DMARC_STATUS, KAM_LAZY_DOMAIN_SECURITY, SPF_HELO_NONE, SPF_NONE, TXREP autolearn=no autolearn_force=no version=3.4.2 X-Spam-Checker-Version: SpamAssassin 3.4.2 (2018-09-13) on server2.sourceware.org X-BeenThere: gcc@gcc.gnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Gcc mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 07 Sep 2020 06:09:11 -0000 SGkNCg0KSSdtIGFkZGluZyBhIG5ldyBtYWNoaW5lIG1vZGVsLiBJIGhhdmUg YSBwcm9ibGVtIHdoZW4gd3JpdGluZyB0aGUgImRlZmluZV9pbnNuX3Jlc2Vy dmF0aW9uIiBmb3IgaW5zdHJ1Y3Rpb24gc2NoZWR1bGluZy4NCkhvdyB0byB3 cml0ZSB0aGUgImRlZmluZV9pbnNuX3Jlc2VydmF0aW9uIiBmb3Igb25lIGlu c3RydWN0aW9uIHRoYXQgdGhlcmUgYXJlIGRpZmZlcmVudCBsYXRlbmNpZXMg YW5kIHBpcGVsaW5lcyBhY2NvcmRpbmcgdG8gcGFyYW1ldGVyLg0KDQpGb3Ig ZXhhbXBsZSwgdGhlIEFERCAoc2hpZnRlZCByZWdpc3RlcikgaW5zdHJ1Y3Rp b24gaW4gYTY0ZngNCg0KSW5zdHJ1Y3Rpb24gICAgICAgICAgICBPcHRpb24g ICAgICAgICAgICAgICAgICAgICAgICAgICAgIExhdGVuY3kgICAgUGlwZWxp bmUNCkFERCAoc2hpZnRlZCByZWdpc3RlcikgIDxhbW91bnQ+ID0gMCAgICAg ICAgICAgICAgICAgICAgIDEgICAgICAgICAgRVgqIHwgRUFHKg0KICAgICAg ICAgICAgICAgICAgICAgIDxhbW91bnQ+ID0gWzEtNF0gJiYgPHNoaWZ0Pj1M U0wgIDErMSAgICAgICAoRVhBICsgRVhBKSB8IChFWEIgKyBFWEIpDQogICAg ICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAg ICAgICAgICAyKzEgICAgICAgKEVYQSArIEVYQSkgfCAoRVhCICsgRVhCKQ0K DQpJbiBhYXJjaDY0Lm1kIEFERCAoc2hpZnRlZCByZWdpc3RlcikgaW5zdHJ1 Y3Rpb24gaXMgZGVmaW5lZCBhcyBmb2xsb3dpbmfvvI4NCiAoZGVmaW5lX2lu c24gIiphZGRfPHNoaWZ0Pl88bW9kZT4iDQogIFsoc2V0IChtYXRjaF9vcGVy YW5kOkdQSSAwICJyZWdpc3Rlcl9vcGVyYW5kIiAiPXIiKQ0KICAgICAgICAo cGx1czpHUEkgKEFTSElGVDpHUEkgKG1hdGNoX29wZXJhbmQ6R1BJIDEgInJl Z2lzdGVyX29wZXJhbmQiICJyIikNCiAgICAgICAgICAgICAgICAgICAgICAg ICAgICAgIChtYXRjaF9vcGVyYW5kOlFJIDIgImFhcmNoNjRfc2hpZnRfaW1t Xzxtb2RlPiIgIm4iKSkNCiAgICAgICAgICAgICAgICAgIChtYXRjaF9vcGVy YW5kOkdQSSAzICJyZWdpc3Rlcl9vcGVyYW5kIiAiciIpKSldDQogICIiDQog ICJhZGRcXHQlPHc+MCwgJTx3PjMsICU8dz4xLCA8c2hpZnQ+ICUyIg0KICBb KHNldF9hdHRyICJ0eXBlIiAiYWx1X3NoaWZ0X2ltbSIpXQ0KKQ0KDQpJdCBj b3VsZCBub3QgYmUgZGlzdGluZ3Vpc2hlZCBieSB0aGUgdHlwZSAiYWx1X3No aWZ0X2ltbSIgd2hlbiB3cml0aW5nICJkZWZpbmVfaW5zbl9yZXNlcnZhdGlv biIgZm9yIEFERCAoc2hpZnRlZCByZWdpc3RlcikuIA0KV2hhdCBzaG91bGQg SSBkbz8NCg0KUmVnYXJkcw0KUWlhbg0KDQoKCg==