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From: "luoyonggang at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/110921] Relax _tzcnt_u32 support x86, all x86 arch support for this instrunction
Date: Mon, 07 Aug 2023 02:12:24 +0000	[thread overview]
Message-ID: <bug-110921-4-wtxj5HrcrR@http.gcc.gnu.org/bugzilla/> (raw)
In-Reply-To: <bug-110921-4@http.gcc.gnu.org/bugzilla/>

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=110921

--- Comment #6 from 罗勇刚(Yonggang Luo) <luoyonggang at gmail dot com> ---
MSVC also added, clang seems have optimization issue, but MSVC doesn't have
that


https://godbolt.org/#z:OYLghAFBqd5QCxAYwPYBMCmBRdBLAF1QCcAaPECAMzwBtMA7AQwFtMQByARg9KtQYEAysib0QXACx8BBAKoBnTAAUAHpwAMvAFYTStJg1DIApACYAQuYukl9ZATwDKjdAGFUtAK4sGIMwDMpK4AMngMmAByPgBGmMQg0gAOqAqETgwe3r7%2BQSlpjgJhEdEscQnSdpgOGUIETMQEWT5%2BgbaY9oUMdQ0ExVGx8Ym29Y3NOW0Ko33hA2VDkgCUtqhexMjsHOYBeFRYVADUAPoAskJuRwBq2ABKJhoAgtvhyN5YByYBbuEExOEAdAhPth7k9Ah0lKDngxXl53p83KoABwANh%2BfwYgOBUPBDHwVChjx%2BByoEGJTFIB2JMUWUIA7FZHgdmSzmcRMAQ1gxjgQAF7IQRHLwBMwsiBMWkBRlPOkAEQ4y1onAArLw/BwtKRUJw3NZrAcFKt1pgPoEeKQCJoFcsANYSFH/DQBZUogJ0lEATkkkjpHpRkiCSo4kjVVq1nF4ChAGgtVuWcFgSDQLCSdHi5EoydT9ASADdkEkkkdc1wPUcDARMFMjqp/aQsLm8BtLnhMAB3ADySUYnHNNFoleIUYgMTDMXCDQAnr3eOPmMRJx2YtpqpbuLxk2xBB2GLRpxreFgYl5gG4xLQo%2Bv65gWIZgOID/W8Oyarmq2HMKpql5KzPyIIOjDWg8BiYgpw8LAw1%2BPAWBnZYqAMYAFBbdsux7K9%2BEEEQxHYKQZEERQVHUR9dDMfQ7xQPVLH0ECo0gZZUCSLpLwAWg7MxeFQN9iD%2BLA6IgZYqhqZwIFccY/C4YI8X6Upyj0fJ0gEcT5NSRSGBkwYEkkoSuh6MZPBaPQdNqaYNPmLSRl6ZTtNM2ZZKGLhBKNDYJEVFVQ0fbUOAOWtJAOFgFHzA4Sw9f4KyrAgDggXBCBIU0Akc3g1y0RZbQkSR/mVDQzC9JENC4FENDyuknX0TgQ1IdVNS8yNo1jA94xgRAUFQFM0zICgICzdqUAMIwjl%2BLwGBta9G2bVtO27dU%2BzoQdh1HR85ynP8loXJcVwcP9N0YAgdz3MMjxPM9aAvP8sFvIwH01fAX0cN9L01T9v1/K8fkAx9gNA8CME2TVoNg9d4MQ5CJrQ6beEw4RRHEPDIcItQw10SS%2BuMKibE%2B/iGKYjJWI7AJOO43j33o9pOgyFw8WsqT0DMuTJIUroqYZjJaYc0nVxMqyDJybSOg5gQ9JmEpNKM6YqamXpWa0py1hcxyyo4VVKrDLyfNRFj/QOV47yiwbhsWKKYqIYh4sS%2BqUrSswHTMLgNDpJEzEkKRlQK91pCDCqqs4iNbDq5KFVIBNmu6nMMy61rsyGJtkDMbLSxjBsm0wFDJvQmaB3ieaxwnBcVpzxdl1XLbWq3Xbd33a7MGPU9z0vc1zrvK7D2fDn7o/L9kB/TZzTeoNNU%2BsCFwg36kr%2BAGeCBpgkJTsG/0h7CYekOGlARkiQEDCjTEsawaJiTGtWxgRcY4rVCbwPj4EEvnhL8UTKe5iTqallSCgyJnVK6Z/ebJgWxYfozr66VssLcyosubZEfhLRoX8ZbGlcgrJWXtwzeWRCiDWflo4HFjjbf4oUNCG3wMbU2iwkpxjSlwJE/xUTKh9MqP0eUzD2yRArT2KsfZRhjP7Rq8AIBIFWAQJIP4w4h3iJEVgmxUHoIOMAZAyBdbECGjaEhwRCEkHPnoee0NcJL1kPDYimpSKkDbGBJIcEEEeWqpwDsP5BGRVQIcXy/lApyJCmFJglYphRQ8G1HM8UzDKK4WlOk/w6QUMkEiD0jtspmCRG6MiHsLHew4LVThcZA5NV4S1Hx6ZOoiISMALgIpRpJxnlNOes1M6UAWpqVa%2B5zS1PWkXK821tzlwOlXI6tczo3kbiPJ8t08Bt0fE9TuL0e4AT7rwAe31IKPn%2BmYhCU8QaoTKRhWQC9tH4XkCvfROhhgo0otvaiGNL4H2YpwNiooWJlBYHgAm8Qib72MiJMS/9JKhDsiLemH835vNIMzIonzQHf35t0P%2BECAE/zBZLIFdNLL6QhTZGFIC6awLlm5RWiTkFqzQZrGRcjCn/FFNFVRJtthm0CaQO0BV/gojpfShlDL3blSxTVX2qSGoYpPkgtllLuJpGcJIIAA%3D

The demo code is:

#ifdef _MSC_VER
#include <intrin.h>
#else
#include <x86intrin.h>
#endif

int f(int a, int b)
{
        return _tzcnt_u32   (a);
}

  parent reply	other threads:[~2023-08-07  2:12 UTC|newest]

Thread overview: 12+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2023-08-06 14:40 [Bug target/110921] New: " luoyonggang at gmail dot com
2023-08-06 17:32 ` [Bug target/110921] " pinskia at gcc dot gnu.org
2023-08-06 17:32 ` pinskia at gcc dot gnu.org
2023-08-07  1:27 ` crazylht at gmail dot com
2023-08-07  1:44 ` crazylht at gmail dot com
2023-08-07  1:52 ` crazylht at gmail dot com
2023-08-07  2:12 ` luoyonggang at gmail dot com [this message]
2023-08-07  2:46 ` crazylht at gmail dot com
2023-08-07 10:39 ` luoyonggang at gmail dot com
2023-08-07 11:50 ` crazylht at gmail dot com
2023-08-07 12:36 ` luoyonggang at gmail dot com
2023-08-07 12:59 ` crazylht at gmail dot com

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