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Thu, 18 Jan 2024 08:28:07 +0100 From: Matthias Kretz To: Srinivas Yadav , CC: , , , Andrew Pinski Subject: Re: [PATCH] libstdc++: add ARM SVE support to std::experimental::simd Date: Thu, 18 Jan 2024 08:27:55 +0100 Message-ID: <12731700.VsHLxoZxqI@centauriprime> Organization: GSI Helmholtz Centre for Heavy Ion Research In-Reply-To: References: MIME-Version: 1.0 Content-Transfer-Encoding: base64 Content-Type: text/plain; charset="UTF-8" X-Originating-IP: [140.181.3.12] X-ClientProxiedBy: srvex5.Campus.gsi.de (10.10.4.95) To srvEX6.campus.gsi.de (10.10.4.96) X-Spam-Status: No, score=-4.1 required=5.0 tests=BAYES_00,BODY_8BITS,KAM_DMARC_STATUS,SPF_HELO_PASS,SPF_PASS,TXREP,T_SCC_BODY_TEXT_LINE,URIBL_SBL_A 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: T24gVGh1cnNkYXksIDQgSmFudWFyeSAyMDI0IDEwOjEwOjEyIENFVCBBbmRyZXcgUGluc2tpIHdy b3RlOgo+IEkgcmVhbGx5IGRvdWJ0IHRoaXMgd291bGQgd29yayBpbiB0aGUgZW5kLiBCZWNhdXNl IEhXIHdoaWNoIGlzIDEyOGJpdHMKPiBvbmx5LCBjYW4ndCBzdXBwb3J0IC1tc3ZlLXZlY3Rvci1i aXRzPTIwNDggLiBJIGFtIHRoaW5raW5nCj4gc3RkOjpleHBlcmltZW50YWw6OnNpbWQgaXMgbm90 IHRoZSByaWdodCB3YXkgb2Ygc3VwcG9ydGluZyB0aGlzLgo+IFJlYWxseSB0aGUgcm91dGUgdGhl IHN0YW5kYXJkIHNob3VsZCBiZSBoZWFkaW5nIHRvd2FyZHMgaXMgbm9uCj4gY29uc3RhbnQgYXQg Y29tcGlsZSB0aW1lIHNpemVkIHZlY3RvcnMgaW5zdGVhZCBhbmQgdGhlbiB5b3UgY291bGQgdXNl Cj4gdGhlIGNvbnN0YW50IHNpemVkIG9uZXMgdG8gZW11bGF0ZSB0aGUgVmFyaWFibGUgbGVuZ3Ro IG9uZXMuCgpJIGRvbid0IGZvbGxvdy4gIm5vbi1jb25zdGFudCBhdCBjb21waWxlIHRpbWUgc2l6 ZWQgdmVjdG9ycyIgaW1wbGllcyAKc2l6ZWxlc3MgKG5vIGNvbnN0ZXhwciBzaXplb2YpLCBubz8K TGV0IG1lIHRyeSB0byBleHBsYWluIHdoZXJlIEknbSBjb21pbmcgZnJvbS4gT25lIG9mIHRoZSBt b3RpdmF0aW5nIHVzZSAKY2FzZXMgZm9yIHNpbWQgdHlwZXMgaXMgY29tcG9zaXRpb24uIExpa2Ug dGhpczoKCnRlbXBsYXRlIDx0eXBlbmFtZSBUPgpzdHJ1Y3QgUG9pbnQKewogIFQgeCwgeSwgejsK CiAgVCBkaXN0YW5jZV90b19vcmlnaW4oKSB7CiAgICByZXR1cm4gc3FydCh4ICogeCArIHkgKiB5 ICsgeiAqIHopOwogIH0KfTsKClBvaW50PGZsb2F0PiBpcyBvbmUgcG9pbnQgaW4gM0Qgc3BhY2Us IFBvaW50PHNpbWQ8ZmxvYXQ+PiBzdG9yZXMgbXVsdGlwbGUgCnBvaW50cyBpbiAzRCBzcGFjZSBh bmQgY2FuIHdvcmsgb24gdGhlbSBpbiBwYXJhbGxlbC4KClRoaXMgaW1wbGllcyB0aGF0IHNpbWQ8 VD4gbXVzdCBoYXZlIGEgc2l6ZW9mLiBDKysgaXMgdW5saWtlbHkgdG8gZ2V0IApzaXplbGVzcyB0 eXBlcyAodGhlIGRpc2N1c3Npb25zIHdlcmUgbG9uZywgdGhlcmUgd2VyZSBtYW55IHBhcGVycywg Li4uKS4gClNob3VsZCBzaXplbGVzcyB0eXBlcyBpbiBDKysgZXZlciBoYXBwZW4sIHRoZW4gY29t cG9zaXRpb24gaXMgbGlrZWx5IGdvaW5nIAp0byBiZSBjb25zdHJhaW5lZCB0byB0aGUgbGFzdCBk YXRhIG1lbWJlci4KCldpdGggdGhlIGFib3ZlIGFzIG91ciBkZXNpZ24gY29uc3RyYWludHMsIFNW RSBhdCBmaXJzdCBzZWVtcyB0byBiZSBhIGJhZCAKZml0IGZvciBpbXBsZW1lbnRpbmcgc3RkOjpz aW1kLiBIb3dldmVyLCBpZiAoYXQgbGVhc3QgaW5pdGlhbGx5KSB3ZSBhY2NlcHQgCnRoZSBuZWVk IGZvciBkaWZmZXJlbnQgYmluYXJpZXMgZm9yIGRpZmZlcmVudCBTVkUgaW1wbGVtZW50YXRpb25z LCB0aGVuIHlvdSAKY2FuIGxvb2sgYXQgdGhlICJzY2FsYWJsZSIgcGFydCBvZiBTVkUgYXMgYW4g ZWZmaWNpZW50IHdheSBvZiByZWR1Y2luZyB0aGUgCm51bWJlciBvZiBvcGNvZGVzIG5lY2Vzc2Fy eSBmb3Igc3VwcG9ydGluZyBhbGwga2luZHMgb2YgZGlmZmVyZW50IHZlY3RvciAKbGVuZ3Rocy4g QnV0IG90aGVyd2lzZSB5b3UgY2FuIHRyZWF0IGl0IGFzIGZpeGVkLXNpemUgcmVnaXN0ZXJzIC0g d2hpY2ggaXQgCmlzIGZvciBhIGdpdmVuIENQVS4gSW4gdGhlIGNhc2Ugb2YgYSBtdWx0aS1DUFUg c2hhcmVkLW1lbW9yeSBzeXN0ZW0gKGUuZy4gClJETUEgYmV0d2VlbiBkaWZmZXJlbnQgQVJNIGlt cGxlbWVudGF0aW9ucykgYWxsIHlvdSBuZWVkIGlzIGEgZGlmZmVyZW50IApuYW1lIGZvciBpbmNv bXBhdGlibGUgdHlwZXMuIFNvIHN0ZDo6c2ltZDxmbG9hdD4gb24gU1ZFMjU2IG11c3QgaGF2ZSBh IApkaWZmZXJlbnQgbmFtZSBvbiBTVkU1MTIuIFNhbWUgZm9yIHN0ZDo6c2ltZDxmbG9hdCwgOD4g KHdoaWNoIGlzIGN1cnJlbnRseSAKbm90IHRoZSBjYXNlIHdpdGggU3Jpbml2YSdzIHBhdGNoLCBJ IHRoaW5rLCBhbmQgbmVlZHMgdG8gYmUgcmVzb2x2ZWQpLgoKPiBJIHRoaW5rIHdlIHNob3VsZCBu b3QgZGVwZW5kIG9uIF9fQVJNX0ZFQVRVUkVfU1ZFX0JJVFMgYmVpbmcgc2V0IGhlcmUKPiBhbmQg YmVpbmcgbWVhbmZ1bCBpbiBhbnkgd2F5LgoKSSdkIGxvdmUgdG8uIEluIHRoZSBzYW1lIHdheSBJ J2QgbG92ZSB0byAqbm90IGRlcGVuZCogb24gX19BVlhfXywgCl9fQVZYNTEyRl9fIGV0Yy4KCi0g TWF0dGhpYXMKCi0tIArilIDilIDilIDilIDilIDilIDilIDilIDilIDilIDilIDilIDilIDilIDi lIDilIDilIDilIDilIDilIDilIDilIDilIDilIDilIDilIDilIDilIDilIDilIDilIDilIDilIDi lIDilIDilIDilIDilIDilIDilIDilIDilIDilIDilIDilIDilIDilIDilIDilIDilIDilIDilIDi lIDilIDilIDilIDilIDilIDilIDilIDilIDilIDilIDilIDilIDilIDilIDilIDilIDilIDilIDi lIDilIDilIAKIERyLiBNYXR0aGlhcyBLcmV0eiAgICAgICAgICAgICAgICAgICAgICAgICAgIGh0 dHBzOi8vbWF0dGtyZXR6LmdpdGh1Yi5pbwogR1NJIEhlbG1ob2x0eiBDZW50ZXIgZm9yIEhlYXZ5 IElvbiBSZXNlYXJjaCAgICAgICAgICAgICAgIGh0dHBzOi8vZ3NpLmRlCiBzdGQ6OnNpbWQK4pSA 4pSA4pSA4pSA4pSA4pSA4pSA4pSA4pSA4pSA4pSA4pSA4pSA4pSA4pSA4pSA4pSA4pSA4pSA4pSA 4pSA4pSA4pSA4pSA4pSA4pSA4pSA4pSA4pSA4pSA4pSA4pSA4pSA4pSA4pSA4pSA4pSA4pSA4pSA 4pSA4pSA4pSA4pSA4pSA4pSA4pSA4pSA4pSA4pSA4pSA4pSA4pSA4pSA4pSA4pSA4pSA4pSA4pSA 4pSA4pSA4pSA4pSA4pSA4pSA4pSA4pSA4pSA4pSA4pSA4pSA4pSA4pSA4pSA4pSACg==