From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from m16.mail.126.com (m16.mail.126.com [220.197.31.9]) by sourceware.org (Postfix) with ESMTP id 38BDB3858D39 for ; Wed, 10 Apr 2024 01:26:16 +0000 (GMT) DMARC-Filter: OpenDMARC Filter v1.4.2 sourceware.org 38BDB3858D39 Authentication-Results: sourceware.org; dmarc=pass (p=none dis=none) header.from=126.com Authentication-Results: sourceware.org; spf=pass smtp.mailfrom=126.com ARC-Filter: OpenARC Filter v1.0.0 sourceware.org 38BDB3858D39 Authentication-Results: server2.sourceware.org; arc=none smtp.remote-ip=220.197.31.9 ARC-Seal: i=1; a=rsa-sha256; d=sourceware.org; s=key; t=1712712380; cv=none; b=HcFw1RGj1GiDt3zeLYyYOfN2a2YIpnSuGwfaX9OJ9KuZsYFH3lw48lJwaGt2gXssc1m8pmw0S/r7Gwuxkqp+fq39Nx65PTMwSL633HaXAeRkcdzvS49BaLmWsT9zYgP86jxYPoqTY6ABY1czYl44FV15F3CWA/yMivub38NBths= ARC-Message-Signature: i=1; a=rsa-sha256; d=sourceware.org; s=key; t=1712712380; c=relaxed/simple; bh=ZU7ZJEACeqEhjlFwJ8HkkfdSg+fzsz9wR1P8hEMJ9PY=; h=DKIM-Signature:Message-ID:Date:MIME-Version:Subject:To:From; b=POlQnggfp+DcGJxa3Wv2rAMWOGqYUksQ4jujqPT87TSXkDFDXcUmOKxHILgN0HJ7ekTLxw+O42ighKX4SP65BjZmbLu+eV/2S25KXjsHyCVeLTayvr9KhuPw2WVUSbFm1wINdq0/LvbUkfIK7a9ZN44GUwK/dc0zwxnzgX+k4BI= ARC-Authentication-Results: i=1; server2.sourceware.org DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=126.com; s=s110527; h=Message-ID:Date:MIME-Version:Subject:From: Content-Type; bh=ZU7ZJEACeqEhjlFwJ8HkkfdSg+fzsz9wR1P8hEMJ9PY=; b=ibwELpuzdiAUNxzOYpQ/FU2JLES7fQ1+KRhtgNmBJKZZ2tgDhG5XkxpXYpUkVN c8JZYstabhvgSmpd8OcjzIM9eqn0/6KsYqVr40CKpuVtreeYO5yGxyY9sFGMxkJA fB0nnZ9PjCGnx1qxPwoXU1xzif5fX81D87eOcK1Azdoos= Received: from [192.168.50.66] (unknown [116.236.172.42]) by gzga-smtp-mta-g0-3 (Coremail) with SMTP id _____wD3_yO06hVmGz9RAw--.57654S2; Wed, 10 Apr 2024 09:26:13 +0800 (CST) Message-ID: Date: Wed, 10 Apr 2024 09:26:11 +0800 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: simple optimisation question To: zamfofex , "gcc-help@gcc.gnu.org" References: <32594954.210103.1712683576045@privateemail.com> Content-Language: en-US From: LIU Hao Autocrypt: addr=lh_mouse@126.com; keydata= xsFNBGYM6IcBEACoBF3fd3C+pIaYeyfgXx0xWuGH6wbyOwvF6Xyk6vo7gls8zgC9Lr/pJaeG i5QK+R9PHug0eoqZMS8C1iR0cHRf2zH9nFa8sdtwb+xEB0JBHLsGlv7LqELGkzUHLN5el2A2 fxnSYKbq/iuZXaPQ6PuwvLHBKryI6QbfbNh3na8Nw4eRg92+25PgC2zqVIMQK6A1KWVo0JK0 g3tknkbWz/Q6BkVudSn81XiZ8y5HHGwHWVw4Ill3X1uR+WBiKcTnH1s991XdxgBi+lGgl3Lk 4LjtmrzCgeeRETOxBeDTv8g5iFc9yZ1mzwBv0jxKFMNi1K/TVRyWXTXmpvpivN4wD7SPeYJx 43ML9CNXshWiHwMmQl4F29BHtjTLxdrMu/QAONJgOGPuSSZD37KdIbqvGYOvISWM5PDlPXgc SYPCPK7P7SlGleaJ5PyjJFFs+BDhH3TxYRk5qBHmptHGxYK2nj9Rzk35s0egry+nnwdzzeZk aHgAp2CjObv1UVyIs58Q0fEa1QlVweCXHtwGt1BUJ5er7PuSk4XvNfugD3j6oLYe6RI/s365 4LI1k4MXL1GHVo5YHA9eRdnCRtc6Ko5y9x4X8x+ghVkWTnbsNd26kNTVOINFSKsyPVHCB7wA 51DefwG38x2x9tEeQJr4NKtV/WxdaFE2cWSnOy3dPCpziiiB7wARAQABzRpMSVUgSGFvIDxs aF9tb3VzZUAxMjYuY29tPsLBjQQTAQgANxYhBGJkkFmOAxM6uBVLOIX73mZd6IAbBQJmDOiI BQkFo5qAAhsDBAsJCAcFFQgJCgsFFgIDAQAACgkQhfveZl3ogBvEMQ//SJWV5y1TLmTK7lXJ BkHnWDoRxt0R0hZTeUxEgkk5E4P/uEixoA/kuRGaTckSUUp4yWTNGT9OCzp68BxmDIUHAmzC Lw69KCg+pm2FgGkufcJKy2S2gabx/fFQJ8yMZ9Oe7AALnf7JDMN0tUrMe5Ps3p2KcfTVXPa1 f3v55VmrCxZkH9W1wY3q5JBItvtb0rr3z22VL0on60rsyFxV9YyTsLXKiqIitveNKTdk38sw b92LG6oa2stOAqHsH+x7GHuIey7w6hWlfx0dfopGOoSFWZZEsiJHCy7XETPkD8ONSu24CTXG mm6nS4eht2DAIqQGVy/uIzNNVmMXtLVFywSrythyb/gWYP4b9M/djRoFon41UZ/cHfwVPtKa WIWYPrHa2/rXXaWyts9OROBMYF2foj4+w+azRnt8SFUxto9+F/xYjl90OquzSnDXsr/KuV/Z L/NcfEzqE/xL6OcOBtdR5yQlIHE+OgQ2ifpGH08M9LTM24uBe9rxV8G0+pWvGyKxgAsDt4Eh Kbcrz/gNMVFfFF3TfdWZBgY+yUat4qaGVVN+N8XapRrNge1ZcJiLCHCTT0wGQd4T3dHDntBN IUlDJG81Fpe489ZhRNUsctmRU1w2QO35k2JU6hBx13W2FPfxmHKANonHZBAjMo0UsMvkD4iP gxeA3KLPP6kywSJqe0bOwU0EZgzoiQEQALqNE2vHRqczswapEn9pzsKhgIjhgGlK4M2xmiOq ngeC/smz+tt5Kdx8hnvvCuNzNBjzpP7CBGqF6AbApCTi/j2o8WafBYoAFTZ/p05q/0PgBH1/ BPlnBYhKe/e+qmmVCCIbHoz6MVe0jSPBZv0jj3vsKO2w7Czyjfv6z3788X/q1nTcc7TLquCJ IoqmMnBmar7PqLSm/Ic/05J6WBi4te7dapoicH6thJIJ4uKpDpyOsdbpySE8FqTYZe8U5Dg0 iHiO8rj0w/ZSixfhdl2o4bVCKLYti58mLI/XpFiTcTUcHFSmRGZFxqYy2D+K2iHuhibeYNwC 5TZj/l9JuCcQ4ls9pgvwC5T7ZKQIV5z5geCMZvcLyuAT77FZ3gpivdpx6Y+dkLlpsDazgxDX IWluOU6cN22MejCJaCQJC8PTWX4gCpCzZU9THmC+aERny+mciHYEr6BnJNB5Om77km/2lUfi I2X1wND4w7LlB+CtfVNMQJL1xpCenLHqDjHK7/eRbK2SZZsyop+CzysXhNGJCe+/KH4qx47V cZmeucDTVH+NcOdRewxmjZvjU+13jL4tKvFsXNS/DY/rULpFZV+8FmztOjLtJ6gHx0jINycL KEoR5BP1B+0claqzb3IC02jwNXzw/w+tKl5JXWQ24LIEdaLnHcDFrPquBA8OZ6fvOepzABEB AAHCwXsEGAEIACYWIQRiZJBZjgMTOrgVSziF+95mXeiAGwUCZgzoigUJBaOagAIbDAAKCRCF +95mXeiAG98gD/iD39xJE60hmbfSNXPF3SUMOe23G1x8vGE74M6TJMPhzVDyfvQ3gCfZwg46 q3msIM/K9nuDt8HoBkBVtYBOLi3wQrNjAqmnYZTILNbr1Oinh/LlDdvh5od/QNwHF6zY733l Vlg2nky7sydK1GF3LdKajNyNnKJDnrt+dnm0Gf2Jzm2MQ4HuzxPTtJHvzVNKcnzn5wb2l+Em V8iAnoQdEE/OQg293SbEvpgdMwrvdW5ujHJ3aGcvvzdFR7oMVgq+Y8pkIs3LcGV6ItltOtaC 9R+FRk4Uf1iRWMOlrkbM9iOcJgtpQhRpZJ2Synsv+2xUH8iFZY+yxNnj4w4nbfE7pjFAsoqf Hhv8CvrK6sKrNYrqWQz26kYMVeCogXN9b89rpB0/E38F6MBa81EqHro0QbA2RVa+WHWhoJtU tVDj0F5NlGC4qYODt/xpE5VbU7Jd2z64eB2mnltUzrPaMK+hOip6mGyNh9gHbM/0aO7/Q9s1 RY0ph+Aj2066NJdqWRDdPmRKwgKe1cIXar+Xw4R2Y1qrDZPxOk29crTkC/wiF/smS6FxJLiR k/3FE8EDZQDGI7oJWoBxXOwiuQhtWkLT4CetPNYT0GdPkPdEzdhz8P9+sFVIY1p/gdX+XIN/ g76F9ko5gDM9HP8aP32iFEPcz9rCoXK+AEt6XFXrtEEFITkT In-Reply-To: <32594954.210103.1712683576045@privateemail.com> Content-Type: multipart/signed; micalg=pgp-sha256; protocol="application/pgp-signature"; boundary="------------ZATKes2Dzrj93GwAy0sVcq5K" X-CM-TRANSID:_____wD3_yO06hVmGz9RAw--.57654S2 X-Coremail-Antispam: 1Uf129KBjvJXoWrKFW8KF1rGF1rJFWUZF1rXrb_yoW8JF17pa yDtFWDKF4DW3WvvrykXw4kXryFv3WxtrWUGa4Y9rWvv39Ikr1UtwnFvr45XFyfGryvkw1U uay5Ww1xuFykZ3DanT9S1TB71UUUUU7qnTZGkaVYY2UrUUUUjbIjqfuFe4nvWSU5nxnvy2 9KBjDUYxBIdaVFxhVjvjDU0xZFpf9x07U0sj8UUUUU= X-Originating-IP: [116.236.172.42] X-CM-SenderInfo: 5okbz0xxvhqiyswou0bp/1tbinRa8RmV20PY0YAABsR X-Spam-Status: No, score=-3123.2 required=5.0 tests=BAYES_00,DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,FREEMAIL_FROM,LIKELY_SPAM_BODY,RCVD_IN_BARRACUDACENTRAL,RCVD_IN_DNSWL_NONE,SPF_HELO_NONE,SPF_PASS,TXREP autolearn=no autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on server2.sourceware.org List-Id: This is an OpenPGP/MIME signed message (RFC 4880 and 3156) --------------ZATKes2Dzrj93GwAy0sVcq5K Content-Type: multipart/mixed; boundary="------------mq0E03YlCiNUrWy03Ec0ex9K"; protected-headers="v1" From: LIU Hao To: zamfofex , "gcc-help@gcc.gnu.org" Message-ID: Subject: Re: simple optimisation question References: <32594954.210103.1712683576045@privateemail.com> In-Reply-To: <32594954.210103.1712683576045@privateemail.com> --------------mq0E03YlCiNUrWy03Ec0ex9K Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: base64 5ZyoIDIwMjQtMDQtMTAgMDE6MjYsIHphbWZvZmV4IOWGmemBkzoNCj4gVGhlIGZsYWdzIEkg dGVzdGVkIHdlcmUg4oCYLU8z4oCZIHZzLiDigJgtT3rigJkgYW5kIOKAmC1tMzLigJkgdnMu IG5vbmUuIChGb3VyIGNvbWJpbmF0aW9ucyBwZXIgY29tcGlsZXIuKQ0KPiANCj4gSW4gR0ND LCB0aGUgYXNzZW1ibHkgY29kZSwgYWx0aG91Z2ggZGlmZmVyZW50LCB1bmRlciDigJgtbTMy IC1PeuKAmSB3YXMgb2YgdGhlIHNhbWUgc2l6ZSAoaW4gYnl0ZXMsIGFmdGVyIGFzc2VtYmxl ZCkgZm9yIGJvdGggZnVuY3Rpb25zLiBGb3Ig4oCYLU964oCZIHdpdGhvdWdoIOKAmC1tMzLi gJksIHRoZSBmaXJzdCBvbmUgd2FzIGxhcmdlci4NCg0KVGhlIGZpcnN0IHBpZWNlIG9mIGNv ZGUgaW52b2x2ZXMgdHdvIHNpZ24tZXh0ZW5zaW9uIG9wZXJhdGlvbnMsIGFzIGluDQoNCiAg ICBjaGFyKiBwID0gKGNoYXIqKSB4Ow0KICAgIHJldHVybiAqKHggKyAocHRyZGlmZl90KSBp ICogNDggKyAocHRyZGlmZl90KSBqICogNCk7DQoNCmFuZCB0aGUgc2Vjb25kIG9uZSBpbnZv bHZlcyBvbmUgb25lLCBhcyBpbg0KDQogICAgY2hhciogcCA9IChjaGFyKikgeDsNCiAgICBy ZXR1cm4gKih4ICsgKHB0cmRpZmZfdCkgKGkgKiA0OCArIGogKiA0KSk7DQoNCg0KRm9yIC1t MzIgdGhlIGFzc2VtYmx5IGRpZmZlcnMgYSBsaXR0bGUsIGJ1dCBhcyBmYXIgYXMgSSBjYW4g dGVsbCB0aGVyZSBpcyBhbG1vc3Qgbm8gZGlmZmVyZW5jZS4NCg0KDQo+IElzIHRoaXMgYSBt aXNzZWQgc2l6ZSBvcHRpbWlzYXRpb24gZm9yIHg4Ni02ND8gRXZlbiBpbiB0aGUgY2FzZSB3 aGVyZSB0aGUgYXNzZW1ibHkgY29kZSBpcyBsYXJnZXIsIHRoZSB0aW1lIHBlcmZvcm1hbmNl IGRpZmZlcmVuY2Ugc2VlbXMgdW5vYnNlcnZhYmxlLiAoVGhvdWdoIEnigJlkIGhhdmUgaW1h Z2luZWQgdGhlIHRoZSBsYXJnZXIgb25lIHdvdWxkIGhhdmUgYmVlbiBzbG93ZXIgaW4gZWFj aCBjYXNlLikNCg0KTWF5YmUuIE15IHN1Z2dlc3Rpb24gaXMgdG8gYXZvaWQgYGludGAgYXMg c3Vic2NyaXB0cyBmb3IgeDg2LTY0LCBhcyBpdCBpbnZvbHZlcyB1bm5lY2Vzc2FyeSANCnNp Z24tZXh0ZW5zaW9ucy4NCg0KQW5kIGl0J3Mgbm90IGFsd2F5cyB0aGUgY2FzZSB0aGF0IGxh cmdlciBvbmVzIGFyZSBzbG93ZXIuIEludGVsIENQVXMgcmVjb2duaXplIGEgbG90IG9mIHBh dHRlcm5zIHRvIA0KYnJlYWsgZGVwZW5kZW5jaWVzIChzdWNoIGFzIGB4b3IgZWF4LCBlYXhg LCBhbmQgc2ltaWxhcmx5IGB4b3JwcyB4bW0wLCB4bW0wYCksIHdoaWNoIG1heSBtYWtlIGxh cmdlciANCmNvZGUgZmFzdGVyLg0KDQoNCi0tIA0KQmVzdCByZWdhcmRzLA0KTElVIEhhbw0K DQo= --------------mq0E03YlCiNUrWy03Ec0ex9K-- --------------ZATKes2Dzrj93GwAy0sVcq5K Content-Type: application/pgp-signature; name="OpenPGP_signature.asc" Content-Description: OpenPGP digital signature Content-Disposition: attachment; filename="OpenPGP_signature.asc" -----BEGIN PGP SIGNATURE----- wsF5BAABCAAjFiEEYmSQWY4DEzq4FUs4hfveZl3ogBsFAmYV6rQFAwAAAAAACgkQhfveZl3ogBud 9g/+MKMvwQtqorV1T14swmKxJ2o513m/ei48YOdduDuNxQJGAkv7YhPTCDtowqUIzeL9RbdE78yl QpVRliZ8uHSM68qG+0Np3feBSbO+AqtXd1fiPCw43RIkh8Dbu7Fo5lc5aUamc8xp8r1GKYpCIdQr /JH11zc7rEyu0uniRCQHA/PTSuG7RH9l7DY3RQPmhEm8gb/KqJ9eOaD4WJorvvOU1O23T68amfwE tIS+ir6IltgX9Tb7TahupI5tcP3fC6F3a/cCBnWUdnYk/uV7oHYWTgyo2DYpPcpmT3wxmfvDNE00 edioTdLtBRsBnFmDskzaJbjOWo11ARZaoC0EFPRpT35IOyJuXIqOh04iFFTqVg4/i5Rk0MQ0e/kP ZQ0F0o9erhM4ZsAoxtma9fKBYCcDAqry1qhk/XiM3UXUFZdCjnf5pWidFxiuKn03upsolBnn3jc0 IRMvEC6N9kf8tDwxpLRo/kIXxbjv4RXx9gldoJjixFWsGtH0/zi+9iLvGIv0Z85x717R6bUnqALq 2Dx3fD1MXBgIMzPlxWsSOxOr/kAkzepV1HfIeRJ14MuVuA6h0kSESjzWASC86SPQgEvORgLCN06+ 9ohLIxTnwKrR4sZQJHedKalkuX+YXVC1UAubV/j6NZJG+Tlme7jigNjwvUiUUnznC9NzkdRQW+G2 nU8= =cHA+ -----END PGP SIGNATURE----- --------------ZATKes2Dzrj93GwAy0sVcq5K--