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Subject: Meeting Minutes - Office Hours for the GNU Toolchain - 2026-07-16 X-Mimecast-Spam-Score: 0 X-Mimecast-MFC-PROC-ID: Lq_7dyZ3Epl_ZBr5eDMaKnkZVS7jQ-EYXco4Fdtwj7g_1784221887 X-Mimecast-Originator: redhat.com Content-Language: en-US Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 8bit X-BeenThere: gdb@sourceware.org X-Mailman-Version: 2.1.30 Precedence: list List-Id: Gdb mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , From: Carlos O'Donell via Gdb Reply-To: Carlos O'Donell Errors-To: gdb-bounces~public-inbox=simark.ca@sourceware.org Sender: "Gdb" There are Office Hours for the GNU Toolchain every 3rd Thursday! There was broad consensus that we should send out the Office Hours minutes both to draw attention to the Office Hours and make it easy to see what was discussed without having to go to the wiki. I'll start posting them monthly the list. Please see https://gcc.gnu.org/wiki/OfficeHours for more details. The following was the agenda and discussions for both office hours: Meeting: 2026-07-16 @ 1100h EST5EDT Attendees: Carlos, David, Malcolm, Jason, Adhemerval, Andrew, Claudio, Michael, Ricahrd, Saurov, Thomas, Tobias. Agenda: [Carlos] To answer last question about SIP for the room. We do not have SIP connection according to the hosting provider. [Sudi] What are we doing with CRA (Cyber Resilience Act)? Long discussion current CRA requirements for stewards and manufacturers. [Carlos] We don't have additional obligations but could decide to self-report issues if we have a security team willing or interested in doing that work. [Tobias] Greg KH talk, if I understood it correctly, implies that there is nothing to do for us (as community) except for providing a way to submit security bugs (even if it goes to /dev/null) → https://kernel-recipes.org/en/2025/schedule/the-cra-and-what-it-means-for-us/ [David Malcolm] What is the status of the GCC SC review of the AI policy WG draft? [Jason] It is under discussion. [David Malcolm] I'm in the happy position that Red Hat is paying for my tokens. I would want the GNU Toolchain projects to retain a certain level of human scale and accessibility to new contributors that they don't need LLMs. [Carlos] The same question applies to hardware too, but we do want a low-level entry to the process. [David Edelsohn] The leadership for the projects are reaching out to the IHVs to support the projects. [Sudi] If you want to be considered a tier 1 target, please provide your machines so we can test this? [David Edelsohn] We want to avoid pay to play and take it off the table. [Carlos] For glibc I'm saying that if pre-commit CI is present for your hardware, that we will monitor those issues as patches arrive and weekly review occurs. [David Edelsohn] We don't want to have barriers, we also don't want to limit what developers can do. [Claudio] https://sashiko.dev/ Meeting: 2026-07-16 @ 0900h "Asia/Kolkata" Attendees: Ramana Radhakrishnan, Maxim Kuvyrkov, Avinash Jayakar, Jeevitha, Kishan Parmar, Saurov Shyam, Surya Kumari J, Vijay Shankar, David Edelsohn, Soumya AR Agenda: * Avinash - Matrix extensions and intrinsics and the status of Graphite in GCC Powerpc and other ISAs have matrix multiply extensions and most usage is via intrinsics and no optimization is using these intrinsics. Graphite (and polyhedral opts) in GCC can identify the matrix multiply operations. Fortran is possibly the closest in terms of frontends that support a builtin matmul operation . Discussed that Graphite was in maintenance mode and the work could be considered in 2 parts - one is improving loop optimizations driven via fortran using polyhedral methods and the second was mapping the matmul to actual C / C++ / Fortran codes. Both appear difficult but would require quite substantial thinking around what benchmarks / workloads / applications would benefit from this and consider it from there. * Maxim - Status AutoFDO? AArch64 is functional for GCC 16. Two parts: ingestion of perf.data profiles and use of profile information in the various passes. Seen some issues with the upstream Google AutoFDO tools and working on a rewrite (RFC now upstream). Occasionally see crashes with use of profiles in the compiler though the frequency has reduced. Plan for GCC17 is to continue to work on performance gaps and functional -- Cheers, Carlos.