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Fri, 9 Aug 2019 09:17:54 -0600 (MDT) To: Richard Henderson , qemu-devel@nongnu.org, Michael Tokarev , Laurent Vivier , qemu-trivial@nongnu.org References: <20190809041952.57302-1-rebecca@bsdio.com> <57083e0b-2853-7f5b-16ec-83bc22f237fa@linaro.org> From: Rebecca Cran Openpgp: preference=signencrypt Autocrypt: addr=rebecca@bsdio.com; keydata= mQINBFrUMZ4BEADI1yUEGeZeXeTCPay1ZpTBdDEpGPAw1dq2VCSTc1VhsnrEBa1iZxAfaeSv Uu5Ti7jlhQ/3sQMl0bJMKGB/RtmIW7k8h2w476oZmG8gChk8su5ZEx/pV1gdqInyFmmJKTYc gabJz8pL+m82w07qPv+oalepZ4dbj+HF++RAK/iEju+q9UHlsjj8e3mMNsvtrOz1K6bnpveO jZ+ms/2H3Hs5a4k8y6buwe2RvwhJQaXa13cR3LhzL+nwj4B9PHZZEa2WpEyYpw/bI0V9YSQN QgC1CYRzDyakZge6BCM6wHOgZSUzRPufGilrNKUwIVbRoIBR9/85+0wR+PlFUOUOfOc6ox7T dWcIx6PuPhek48rh4uwmmwsPtPiH4Z3T5p+GmWQ9NLFZKA1YnEdaSkWtYZsDxwVZZeYG2plt MfhXP0Hj4rf9Y3eoUenCaGioxAbUOBCtXdTGNAhNjz1g5NGDBVyhjKkzwJQvt9UrYTseERit 5dX2CMTy8hYLvSXd/Ivy+HylUS5IslfZxW5z9LgWX7Z97kILgkH3N0ewtLkygkG+Y+x7uaAV dFqp9ASOyzaiwKbJdeOI+WxRSh+AqeCR0S+bpkcLudLmbjrPmaFwjKycy1H85Z5R2J3YHyXY oT6OYjD8vLbUU2GWp6Onkcy1Pu8EMbRuzKil6HnpYg3BexbPFwARAQABtCNSZWJlY2NhIENy YW4gPHJlYmVjY2FAYmx1ZXN0b3Aub3JnPokCVwQTAQgAQQIbIwUJCWYBgAULCQgHAgYVCgkI CwIEFgIDAQIeAQIXgBYhBB+5fZtkTdO940Yr4g0CK1MRvhAgBQJa2B9zAhkBAAoJEA0CK1MR vhAgzJEQAJUqVmTRO9OqCSS2CVKjrqnEWJMvyo0K8B+WiXo0nSQg9+uyoVU7h2s/kkWVGy4u IWbGy2Qe8LiXzBJjHC3TadGvOvakfdMeKKXcgxgX6KlhA9hA2LW6tg22aHUk7Flr/8diHpgf qIwrXhqJXZmK72GR1QfhgoHsOsTJ9GWPswo1kUMc0cJowq0qP1RDdua6BwvDHHPJwu9OmC/i oQlMNm9gkBDq8H2B+m125ANwCnqBizXaiTTLQdewTMbCSuxbsni2icDqwBfFXzEgcJGaYYfB cQeFsfCmtXQK3JUd4Myx128Dxk9P3X64I93SB7QzB0nmWlyvmCFBNoCp0PCLA4qbwbw2sMRX Wx4BqYa8nI/jg+Nqo+Ut2BfltNZIlsHxK+XhxejfLqAjRCZeLnu1otvFnFuGLaAVYx9x1Y1q J8VizZxq6ujio62Qpultp6KNhlkJ+OKoGwA0k4NHh26SxvlsNxlfg/2v9b1LqWRzNujnwbcF 8g4902XjyBLxV+9YpXZEa8H6zzEHxpeDPWT3QfvrT8JuoHa1IyYnUKvG674UKW5zEGEwkQc9 cuQwR1RHd1ZrKtH1duXzaLr/caMp8ZDfGDDxFpenJTRxNRlg4+K7HSdhpac7sBVMUA8uVdE+ iuTThOmdf0c4DorL3BIh6Yv3FV4/NSqT1Wn3CG2fgG1guQINBFrUMZ4BEADkc4mvMcMcDF1t dNxNQuIBE1F243oZamG3LACCKfc1Yur3CPzHwIk5LXCUmbq23iE5bowxMWw3mlVT0p5xM0Wn UidIBwCKu4kRyy/fY4NyWWBuwy9srpTdmUcKRBRNB8zEZE8xIlidD1ijjgqLBfeM7n9ylawA xHLxwU96sdpdHFzb7Z0yKY2e/bzDaHiG0fUvcCmkgLf+uwKKZid1j8zR5PzKpgPqfy/PF01e KyGV3MNu8Y90xMoiEMWfCI2IB1m+hTuzZoboFvGV54SiMuvfWK/VMQjhsL6K2ddOqwVuy2nI MI4G3xDQW/v8KVyn43OSIAyW1eaklhzu0Ir2sO60PXRkvbTUrouvmSvpJfIQS49rU0M/X6FS DgXQLKrZ3my94+g8ptz9KoVml6s4OAwYVz+sb49nuSxipFKkU5FwhKOLmzbsBxCtytcUJoLm juJPJPDQue6YJiIXyc86GVY2pH3DjemKdbB4dSgqAJIp+lCzKSJzz7bgueh2Ox8vzx1tSxKj 7V8Nal+UTKKbkxPmMh+e20YZ4esAVifO3bS6IJP/aDnfagghB71vA7+aWGXPbjPlc2UHpCBi RSsl+IgoQXvdvZBsKRyfBx8neODa2C6JIE5vcaCjilSeKF8SzsFXvimnndhQNhAPU/DwQwSX dCl4gTsFVi5d8Oxq1sce+wARAQABiQI8BBgBCAAmFiEEH7l9m2RN073jRiviDQIrUxG+ECAF AlrUMZ4CGwwFCQlmAYAACgkQDQIrUxG+ECAWnRAAsmZX+KgNxW3v7R/76Tz4Wjmh4AGeE+Ji 3p5QsdTYny1B6vYBL9vCzPJ/AK8pgKMDRaweUP5eZQpfrdWC8Q7SNGgi4Q+97KEs+i2xZLQ+ WJb8a+WEEIc716u0y4ITiHfOgM5jWcFO4MXQATbJgv0drLLesa+LQCvZgPBqupt307EsCubQ s+Sxt+RVjf6rOUolp1GJXEQYwGsKklVd6yqLC8M1BSG53/WE5tSv5GzBZ8fp6EtmjT7leuid FtEvKYHQz4DqG9ELpHUF0X0UUCBK/MgXe3kCVLKE060UrJ4M6uPSx57rmVFA2MvwQR8M7GsW C5UsSM4PYwPWBhwxE7vcx0691YKAHT/5q8LxRVBdUyzPSprMhSQFttsBt+ygm6wRi3Pi3TuC EARNubPkQefyeC34yr40SAUCkOl3eWxSXPF4NfXFQb4AAzZSE5hv3qbDuwo3lrL0LqpIpEQP Az+JZ1QZ6mMFQ5/JD9Gukj54kZc0X8w3sQt0a8vyE/qrJg8vKgv2rCHrPc5MeDkEUEFiiJiC EDdkJtMyoRlU3S4NrnbyLOLEcHE8fGe3hStPX8hY62id2ecdQ5WZ7vLZW5SFeLarbUciuHIk VL6MHnUjbV7XlY50N7ebeFCIdlCWhdum2FJs/Ni+SSxbZC564vrokwlBBGSo6WTPQTa8IWx1 DtU= Message-ID: <71dd9613-491f-bad3-c31e-231bf51df115@bsdio.com> Date: Fri, 9 Aug 2019 09:17:54 -0600 User-Agent: Mozilla/5.0 (X11; FreeBSD amd64; rv:60.0) Gecko/20100101 Thunderbird/60.8.0 MIME-Version: 1.0 In-Reply-To: <57083e0b-2853-7f5b-16ec-83bc22f237fa@linaro.org> Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 7bit Content-Language: en-US X-detected-operating-system: by eggs.gnu.org: FreeBSD 9.x [fuzzy] X-Received-From: 65.103.231.193 Subject: Re: [Qemu-devel] [PATCH] Update the avx2 configure test to be compatible with clang 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: , Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" On 2019-08-08 23:22, Richard Henderson wrote: > > No, this means we're not testing what we need: > > We need to compile exactly one function using avx2. > > The other functions should be compiled with sse4 and sse2, respectively, and we > choose between them by testing cpuid bits at startup. If you supply -mavx2 to > the entire compilation, then the routine that is supposed to use only sse2 will > in fact use avx2, and then the runtime selection is moot. Oh, sorry, I hadn't fully realized there's runtime selection. Fixing this would require significant rework in that case, so I'll just build with GCC instead for now! -- Rebecca Cran