{"id":2229316,"url":"http://patchwork.ozlabs.org/api/1.1/patches/2229316/?format=json","web_url":"http://patchwork.ozlabs.org/project/gcc/patch/n28nn1os-n296-2472-r9s0-q9n1r16np399@fhfr.qr/","project":{"id":17,"url":"http://patchwork.ozlabs.org/api/1.1/projects/17/?format=json","name":"GNU Compiler Collection","link_name":"gcc","list_id":"gcc-patches.gcc.gnu.org","list_email":"gcc-patches@gcc.gnu.org","web_url":null,"scm_url":null,"webscm_url":null},"msgid":"","date":"2026-04-28T06:33:25","name":"[www] Add Zen6 and Zen specific changes to release notes","commit_ref":null,"pull_url":null,"state":"new","archived":false,"hash":"c84e91eced04e83cac618bd69e2a1b82c2165762","submitter":{"id":4338,"url":"http://patchwork.ozlabs.org/api/1.1/people/4338/?format=json","name":"Richard Biener","email":"rguenther@suse.de"},"delegate":null,"mbox":"http://patchwork.ozlabs.org/project/gcc/patch/n28nn1os-n296-2472-r9s0-q9n1r16np399@fhfr.qr/mbox/","series":[{"id":501767,"url":"http://patchwork.ozlabs.org/api/1.1/series/501767/?format=json","web_url":"http://patchwork.ozlabs.org/project/gcc/list/?series=501767","date":"2026-04-28T06:33:25","name":"[www] Add Zen6 and Zen specific changes to release notes","version":1,"mbox":"http://patchwork.ozlabs.org/series/501767/mbox/"}],"comments":"http://patchwork.ozlabs.org/api/patches/2229316/comments/","check":"pending","checks":"http://patchwork.ozlabs.org/api/patches/2229316/checks/","tags":{},"headers":{"Return-Path":"","X-Original-To":["incoming@patchwork.ozlabs.org","gcc-patches@gcc.gnu.org"],"Delivered-To":["patchwork-incoming@legolas.ozlabs.org","gcc-patches@gcc.gnu.org"],"Authentication-Results":["legolas.ozlabs.org;\n\tdkim=pass (1024-bit key;\n unprotected) header.d=suse.de header.i=@suse.de header.a=rsa-sha256\n header.s=susede2_rsa header.b=Ve3ZQgDD;\n\tdkim=pass header.d=suse.de header.i=@suse.de header.a=ed25519-sha256\n header.s=susede2_ed25519 header.b=RviNqskE;\n\tdkim=pass (1024-bit key) header.d=suse.de header.i=@suse.de\n header.a=rsa-sha256 header.s=susede2_rsa header.b=Ve3ZQgDD;\n\tdkim=neutral header.d=suse.de header.i=@suse.de header.a=ed25519-sha256\n header.s=susede2_ed25519 header.b=RviNqskE;\n\tdkim-atps=neutral","legolas.ozlabs.org;\n spf=pass (sender SPF authorized) smtp.mailfrom=gcc.gnu.org\n (client-ip=2620:52:6:3111::32; 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charset=US-ASCII","X-Spamd-Result":"default: False [-4.30 / 50.00]; BAYES_HAM(-3.00)[99.99%];\n NEURAL_HAM_LONG(-1.00)[-1.000];\n NEURAL_HAM_SHORT(-0.20)[-1.000]; MIME_GOOD(-0.10)[text/plain];\n FUZZY_RATELIMITED(0.00)[rspamd.com]; ARC_NA(0.00)[];\n MISSING_XM_UA(0.00)[]; RCVD_COUNT_ZERO(0.00)[0];\n RCPT_COUNT_TWO(0.00)[2]; FROM_HAS_DN(0.00)[];\n DKIM_SIGNED(0.00)[suse.de:s=susede2_rsa,suse.de:s=susede2_ed25519];\n FROM_EQ_ENVFROM(0.00)[]; MIME_TRACE(0.00)[0:+];\n TO_DN_NONE(0.00)[]; TO_MATCH_ENVRCPT_ALL(0.00)[];\n DBL_BLOCKED_OPENRESOLVER(0.00)[fhfr.qr:mid]","X-BeenThere":"gcc-patches@gcc.gnu.org","X-Mailman-Version":"2.1.30","Precedence":"list","List-Id":"Gcc-patches mailing list ","List-Unsubscribe":",\n ","List-Archive":"","List-Post":"","List-Help":"","List-Subscribe":",\n ","Errors-To":"gcc-patches-bounces~incoming=patchwork.ozlabs.org@gcc.gnu.org"},"content":"Does this look OK?\n\nThanks,\nRichard.\n\n\t* gcc-16/changes.html: Add AMD Zen specific items.\n---\n htdocs/gcc-16/changes.html | 11 +++++++++++\n 1 file changed, 11 insertions(+)","diff":"diff --git a/htdocs/gcc-16/changes.html b/htdocs/gcc-16/changes.html\nindex 65462545..749f0c9c 100644\n--- a/htdocs/gcc-16/changes.html\n+++ b/htdocs/gcc-16/changes.html\n@@ -487,6 +487,17 @@ struct Affected : E\n

IA-32/x86-64

\n \n
    \n+
  • GCC now supports AMD CPUs based on the Zen6 core via\n+ -march=znver6. This switch enables the\n+ AVX512_BMM, AVX_NE_CONVERT, AVX_IFMA, AVX_VNNI_INT8 and\n+ AVX512_FP16 ISA extensions ontop of ISA extensions enabled\n+ for Zen5.\n+
    • \n+
  • Auto-vectorization will now try to use a masked vector epilog when\n+ AVX512 support is enabled and tuning for znver4,\n+ znver5 or znver6, saving code size\n+ and improving performance.\n+
    • \n
  • GCC now supports the Intel CPU named Wildcat Lake through\n -march=wildcatlake.\n Wildcat Lake is based on Panther Lake.\n","prefixes":["www"]}