2.0 -//Pentabarf//Schedule//EN PUBLISH FN7FKL@@conf.gnu-tools-cauldron.org -FN7FKL Lane support in GDB for debugging GPUs en en 20250926T090000 20250926T100000 010000

Lane support in GDB for debugging GPUs

PUBLIC CONFIRMED Birds of a Feather (BoF) https://conf.gnu-tools-cauldron.org/opo25/talk/FN7FKL/ Main auditorium (400) Baris Aktemur Lancelot Six PUBLISH FZTXVZ@@conf.gnu-tools-cauldron.org -FZTXVZ AArch64 performance work en en 20250926T103000 20250926T113000 010000

AArch64 performance work

PUBLIC CONFIRMED Talk https://conf.gnu-tools-cauldron.org/opo25/talk/FZTXVZ/ Main auditorium (400) Tamar Christina PUBLISH Y7NMHZ@@conf.gnu-tools-cauldron.org -Y7NMHZ malloc: past, present and future en en 20250926T113000 20250926T123000 010000

malloc: past, present and future

PUBLIC CONFIRMED Talk https://conf.gnu-tools-cauldron.org/opo25/talk/Y7NMHZ/ Main auditorium (400) Wilco Dijkstra PUBLISH SCJ9LH@@conf.gnu-tools-cauldron.org -SCJ9LH Vectorizer for Beginners en en 20250926T133000 20250926T150000 013000

Vectorizer for Beginners

PUBLIC CONFIRMED Tutorial https://conf.gnu-tools-cauldron.org/opo25/talk/SCJ9LH/ Main auditorium (400) Richard Biener PUBLISH RUTTG9@@conf.gnu-tools-cauldron.org -RUTTG9 GCC Machine Descriptions for the Confused en en 20250926T160000 20250926T170000 010000

GCC Machine Descriptions for the Confused

PUBLIC CONFIRMED Talk https://conf.gnu-tools-cauldron.org/opo25/talk/RUTTG9/ Main auditorium (400) Vineet Gupta PUBLISH YV7F3H@@conf.gnu-tools-cauldron.org -YV7F3H AutoFDO - recent improvements en en 20250926T090000 20250926T100000 010000

AutoFDO - recent improvements

PUBLIC CONFIRMED Talk https://conf.gnu-tools-cauldron.org/opo25/talk/YV7F3H/ Auditorium B032 (80) jan Hubička PUBLISH 3PGTEY@@conf.gnu-tools-cauldron.org -3PGTEY Source-to-Source Compilation for Hardware/Software Codesign en en 20250926T103000 20250926T113000 010000

Source-to-Source Compilation for Hardware/Software Codesign

PUBLIC CONFIRMED Talk https://conf.gnu-tools-cauldron.org/opo25/talk/3PGTEY/ Auditorium B032 (80) Tiago Santos PUBLISH XYMAKN@@conf.gnu-tools-cauldron.org -XYMAKN Function multi-versioning developments, and goals for the future en en 20250926T113000 20250926T114500 001500

Function multi-versioning developments, and goals for the future

We'll talk through the current state of function multi versioning, why we view it as important, and why it needs help for the wider GCC community. Then will discuss what our ambitions/hopes are for the future and try get some feedback from others in the community. PUBLIC CONFIRMED Lightning Talks https://conf.gnu-tools-cauldron.org/opo25/talk/XYMAKN/ Auditorium B032 (80) Alfie Richards PUBLISH MA8Z7C@@conf.gnu-tools-cauldron.org -MA8Z7C Using FFmpeg as Benchmark to verify performance of GCC and LLVM en en 20250926T114500 20250926T120000 001500

Using FFmpeg as Benchmark to verify performance of GCC and LLVM

We will introduce how to use FFmpeg as a benchmark, to compare GCC and LLVM performance on it with different situation. The test is mainly based on the RISC-V development board Muse Pi Pro with RVV1.0 feature. In addition, some problems that need to be solved will also be briefly introduced. PUBLIC CONFIRMED Lightning Talks https://conf.gnu-tools-cauldron.org/opo25/talk/MA8Z7C/ Auditorium B032 (80) Jiawei Chen PUBLISH VFLCJJ@@conf.gnu-tools-cauldron.org -VFLCJJ Measuring the health of the GCC community en en 20250926T120000 20250926T121500 001500

Measuring the health of the GCC community

All the interactions of an open source project are publicly visible. This includes commits to repositories, activity on bug trackers and interactions on mailing lists. In this talk I will show how this data can be mined to measure the health of community. Which backends are healthy, and which are languishing, how large are the groups maintaining different parts of the project. We can even start to consider factors such as how inclusive our community is. PUBLIC CONFIRMED Lightning Talks https://conf.gnu-tools-cauldron.org/opo25/talk/VFLCJJ/ Auditorium B032 (80) Jeremy Bennett PUBLISH NM7MDT@@conf.gnu-tools-cauldron.org -NM7MDT Comparative Analysis of GCC Codegen for AArch64 and RISC-V en en 20250926T133000 20250926T143000 010000

Comparative Analysis of GCC Codegen for AArch64 and RISC-V

This work has been carried out as a collaboration between BayLibre and Rivos Inc., and funded by the RISE Project. PUBLIC CONFIRMED Talk https://conf.gnu-tools-cauldron.org/opo25/talk/NM7MDT/ Auditorium B032 (80) Paul-Antoine Arras PUBLISH FHSXQA@@conf.gnu-tools-cauldron.org -FHSXQA GCC Google Summer of Code BoF en en 20250926T143000 20250926T153000 010000

GCC Google Summer of Code BoF

We may focus on the following bullet points as well as anything that comes up during the BoF. 1. Better selection of candidates. It occasionally happens that a selected GSoC contributor needs too much hand-holding from their mentor(s) which can lead to decreased willingness of mentors to participate in the program in next years or their outright burn-out. 2. Make contributors engage with the community more. Often it feels that that accepted contributors are unwilling to ask questions on the mailing list and either communicate just with their mentor(s) in private emails or wait until their next meeting. This slows projects down and puts the entire guidance burden on the mentor(s) where community would often be able to help. 3. We might want to coordinate more when it comes to evaluations, outlining at least some common criteria for these. In fact, we may want to be stricter and fail more projects. 4. We should talk about anything that makes mentoring easier and more fun. 5. We should try to retain more contributors as long(er) term contributors to GCC. While we have gained a few important long-term community members through the program and some folk stick around for a few months, we should probably try to retain more. PUBLIC CONFIRMED Birds of a Feather (BoF) https://conf.gnu-tools-cauldron.org/opo25/talk/FHSXQA/ Auditorium B032 (80) Martin Jambor PUBLISH LQTU3G@@conf.gnu-tools-cauldron.org -LQTU3G New TLS allocator for glibc en en 20250926T160000 20250926T163000 003000

New TLS allocator for glibc

In glibc, we currently have two different algorithms for initial-exec TLS allocation, depending on the TCB layout. Global-dynamic TLS uses a completely different, lazy allocation approach. POSIX TSD (`pthread_key_create`) is based on yet another separate algorithm with its own data structures. The proposal is for a new allocator that explicitly keeps track of the gaps between allocations, and use that everywhere. TCB differences will be handled by presenting the gaps available for allocation to the allocator, based on architecture-specific details. Global-dynamic TLS and `pthread_key_create` can use part of the initial-exec TLS area, but will eventually switch to separate slices of TLS memory. These slices follow an exponential growth policy, so only a small number of them will ever be needed, and pointers to these slices can be kept in a fixed-size array directly in the TCB. The changes will eliminate lazy TLS memory allocation and slow paths from TLS accessor functions. Memory allocation failures will be reported upfront (at `dlopen` or `pthread_create`), and no longer via process termination. A previous attempt to make similar changes had to be reverted because Address Sanitizer was broken by it, and could not be fixed in time for the release. For this new effort, it should be possible to achieve Address Sanitizer compatibility by using its `malloc` to allocate TLS memory (after detecting that Address Sanitizer is active). PUBLIC CONFIRMED Talk (Short) https://conf.gnu-tools-cauldron.org/opo25/talk/LQTU3G/ Auditorium B032 (80) Florian Weimer PUBLISH 8NUW3L@@conf.gnu-tools-cauldron.org -8NUW3L A heap dumper for glibc en en 20250926T163000 20250926T164500 001500

A heap dumper for glibc

PUBLIC CONFIRMED Lightning Talks https://conf.gnu-tools-cauldron.org/opo25/talk/8NUW3L/ Auditorium B032 (80) Florian Weimer PUBLISH YSGAPE@@conf.gnu-tools-cauldron.org -YSGAPE Building Linux kernel with LTO en en 20250926T103000 20250926T104500 001500

Building Linux kernel with LTO

PUBLIC CONFIRMED Lightning Talks https://conf.gnu-tools-cauldron.org/opo25/talk/YSGAPE/ I-105 (30) Michal Jireš PUBLISH SBMUWN@@conf.gnu-tools-cauldron.org -SBMUWN Toolchain and Linux kernel en en 20250926T104500 20250926T121500 013000

Toolchain and Linux kernel

PUBLIC CONFIRMED Birds of a Feather (BoF) https://conf.gnu-tools-cauldron.org/opo25/talk/SBMUWN/ I-105 (30) Jose Marchesi Paul McKenney Alexei Steven Rostedt PUBLISH 9KJV9X@@conf.gnu-tools-cauldron.org -9KJV9X BPF BoF en en 20250926T133000 20250926T143000 010000

BPF BoF

PUBLIC CONFIRMED Birds of a Feather (BoF) https://conf.gnu-tools-cauldron.org/opo25/talk/9KJV9X/ I-105 (30) Jose Marchesi PUBLISH LZHWTK@@conf.gnu-tools-cauldron.org -LZHWTK Introduction to upstream patch review in GCC en en 20250926T160000 20250926T170000 010000

Introduction to upstream patch review in GCC

PUBLIC CONFIRMED Birds of a Feather (BoF) https://conf.gnu-tools-cauldron.org/opo25/talk/LZHWTK/ I-105 (30) Kyrill Tkachov PUBLISH 7VGPWL@@conf.gnu-tools-cauldron.org -7VGPWL ABI change analysis in Libabigail 2.8 en en 20250927T090000 20250927T100000 010000

ABI change analysis in Libabigail 2.8

PUBLIC CONFIRMED Talk https://conf.gnu-tools-cauldron.org/opo25/talk/7VGPWL/ Auditorium B032 (80) Dodji Seketeli PUBLISH FNC8SK@@conf.gnu-tools-cauldron.org -FNC8SK Time-traveling through the GCC PR database and testsuite en en 20250927T103000 20250927T110000 003000

Time-traveling through the GCC PR database and testsuite

Though higher PRs/quarter, /month, /week, /day could intuitively correlate with higher instability, we find that it correlates with stricter scrutiny: it amounts to more eyes collaborating to shake bugs out, rather than more bugs being introduced. Indeed, PR frequency has been on the rise, and that correlates with higher rather than lower stability. We've resorted to a time-traveling technique to identify (un)safer optimizations: adding optimization-disabling flags to torture options of newer testsuites, and running them with older compiler releases, so as to identify flags that most avoid problems that would only be uncovered in the future. PUBLIC CONFIRMED Talk (Short) https://conf.gnu-tools-cauldron.org/opo25/talk/FNC8SK/ Auditorium B032 (80) Alexandre Oliva PUBLISH YZTJNG@@conf.gnu-tools-cauldron.org -YZTJNG Simplifying Custom Instruction Integration in GCC for RISC-V processors en en 20250927T110000 20250927T120000 010000

Simplifying Custom Instruction Integration in GCC for RISC-V processors

PUBLIC CONFIRMED Talk https://conf.gnu-tools-cauldron.org/opo25/talk/YZTJNG/ Auditorium B032 (80) Luis Silva PUBLISH YTTYJE@@conf.gnu-tools-cauldron.org -YTTYJE RISC-V Unified Database: Automating Extension Integration Across Binutils, QEMU, and Beyond en en 20250927T120000 20250927T122000 002000

RISC-V Unified Database: Automating Extension Integration Across Binutils, QEMU, and Beyond

PUBLIC CONFIRMED Talk (Short) https://conf.gnu-tools-cauldron.org/opo25/talk/YTTYJE/ Auditorium B032 (80) Afonso Oliveira PUBLISH XL3XQD@@conf.gnu-tools-cauldron.org -XL3XQD profiledb: optimize your distro/builds with crowdsourced profile corpus en en 20250927T133000 20250927T140000 003000

profiledb: optimize your distro/builds with crowdsourced profile corpus

PUBLIC CONFIRMED Talk (Short) https://conf.gnu-tools-cauldron.org/opo25/talk/XL3XQD/ Auditorium B032 (80) Frank Ch. Eigler PUBLISH V7QCDW@@conf.gnu-tools-cauldron.org -V7QCDW Modula-2: New wide set implementation, performance results and direction of travel en en 20250927T140000 20250927T143000 003000

Modula-2: New wide set implementation, performance results and direction of travel

This talk presents the performance results for the new wideset implemented in gm2. The technique follows the design shown in the M2R10 proposed standard, namely using a module to contain the operators for a base datatype. The talk will conclude by discussing the M2R10 pragmas and how they will be used to enable module inlining and Modula-2 dialect choice. Therefore allowing mixed dialect projects to be whole program optimized and potentially more base type operators could be implemented as an inline module. PUBLIC CONFIRMED Talk (Short) https://conf.gnu-tools-cauldron.org/opo25/talk/V7QCDW/ Auditorium B032 (80) Gaius Mulley PUBLISH 89QXSR@@conf.gnu-tools-cauldron.org -89QXSR RISC-V Auto-Vectorization 101 en en 20250927T143000 20250927T153000 010000

RISC-V Auto-Vectorization 101

PUBLIC CONFIRMED Talk https://conf.gnu-tools-cauldron.org/opo25/talk/89QXSR/ Auditorium B032 (80) Robin Dapp PUBLISH 3URW7F@@conf.gnu-tools-cauldron.org -3URW7F BoF on GCC and AI en en 20250927T090000 20250927T100000 010000

BoF on GCC and AI

PUBLIC CONFIRMED Birds of a Feather (BoF) https://conf.gnu-tools-cauldron.org/opo25/talk/3URW7F/ Auditorium B001 (170) Jeremy Bennett Pietra Ferreira PUBLISH EKDPEH@@conf.gnu-tools-cauldron.org -EKDPEH Parallel Computing, Offloading, OpenMP and OpenACC en en 20250927T103000 20250927T113000 010000

Parallel Computing, Offloading, OpenMP and OpenACC

PUBLIC CONFIRMED Talk https://conf.gnu-tools-cauldron.org/opo25/talk/EKDPEH/ Auditorium B001 (170) Tobias Burnus Thomas Schwinge PUBLISH P7HWJ9@@conf.gnu-tools-cauldron.org -P7HWJ9 IPA, LTO and profile feedback BoF en en 20250927T113000 20250927T123000 010000

IPA, LTO and profile feedback BoF

PUBLIC CONFIRMED Birds of a Feather (BoF) https://conf.gnu-tools-cauldron.org/opo25/talk/P7HWJ9/ Auditorium B001 (170) jan Hubička PUBLISH ZMC7QR@@conf.gnu-tools-cauldron.org -ZMC7QR Uncomplicating new contributions en en 20250927T133000 20250927T143000 010000

Uncomplicating new contributions

While our contribution process may seem familiar and uncomplicated to us, it is very different to what most new developers expect, which leads to several stumbling blocks. That is not a failure of our process, we just need to be explicit what is different, so that these new developers feel able to navigate it on their own. We, Guinevere Larsen and Arjun Shankar, have been attempting to get new contributors in our respective projects, GDB and glibc, and have collected a series of common stumbling blocks for first time contributors. The first half of this talk aims to present these stumbling blocks, and then suggestions on how projects can reduce or remove them without affecting established developer workflows. The second half will be dedicated to open discussions on those suggestions and new ones that may come up. PUBLIC CONFIRMED Talk https://conf.gnu-tools-cauldron.org/opo25/talk/ZMC7QR/ Auditorium B001 (170) Arjun Shankar Guinevere PUBLISH CY3BMC@@conf.gnu-tools-cauldron.org -CY3BMC BoF on Parallel Computing, Offloading, OpenMP and OpenACC en en 20250927T143000 20250927T153000 010000

BoF on Parallel Computing, Offloading, OpenMP and OpenACC

_While some discussion points will be prepared, this is an open BoF and other related topics can be raised. A slide or two will be prepared as a starting point for discussion or to illustrate a to-be-discussed item. If you want or have such an item, feel free to send the slide to the BoF organizers for including it._ PUBLIC CONFIRMED Birds of a Feather (BoF) https://conf.gnu-tools-cauldron.org/opo25/talk/CY3BMC/ Auditorium B001 (170) Tobias Burnus Thomas Schwinge Jakub Jelinek PUBLISH BAWVZM@@conf.gnu-tools-cauldron.org -BAWVZM Processes and Barriers en en 20250927T160000 20250927T170000 010000

Processes and Barriers

Confirmed panelists are: - Richard Biener - Nick Clifton - Adhemerval Zanella - Maxim Kuvyrkov (moderator) - Carlos O'Donell (moderator) ... and we are waiting for confirmation from other panelists. PUBLIC CONFIRMED Birds of a Feather (BoF) https://conf.gnu-tools-cauldron.org/opo25/talk/BAWVZM/ Auditorium B001 (170) Carlos O'Donell Maxim Kuvyrkov PUBLISH BKRJGY@@conf.gnu-tools-cauldron.org -BKRJGY Latest glibc math improvements and the future en en 20250927T090000 20250927T100000 010000

Latest glibc math improvements and the future

PUBLIC CONFIRMED Talk https://conf.gnu-tools-cauldron.org/opo25/talk/BKRJGY/ Auditorium B002 (170) Adhemerval Zanella Netto PUBLISH LXPUYR@@conf.gnu-tools-cauldron.org -LXPUYR Improving glibc malloc for high reliability large data multi-threaded applications en en 20250927T103000 20250927T113000 010000

Improving glibc malloc for high reliability large data multi-threaded applications

PUBLIC CONFIRMED Talk https://conf.gnu-tools-cauldron.org/opo25/talk/LXPUYR/ Auditorium B002 (170) Cupertino Miranda PUBLISH HEZF9L@@conf.gnu-tools-cauldron.org -HEZF9L GNU C Library BoF en en 20250927T113000 20250927T123000 010000

GNU C Library BoF

This BoF aims to bring together developers of other components that have dependencies on glibc and glibc developers to talk about the following topics: * Planning for glibc 2.43 and what work needs to be done between September 2025 and February 2026. * Planning for glibc 2.44 and what work needs to be done between February 2026 and August 2026. * Can we try month-to-month feature planning again? ... and more. PUBLIC CONFIRMED Birds of a Feather (BoF) https://conf.gnu-tools-cauldron.org/opo25/talk/HEZF9L/ Auditorium B002 (170) Carlos O'Donell PUBLISH Y3CVHY@@conf.gnu-tools-cauldron.org -Y3CVHY s390: Stack tracing using Frame Pointer, Back Chain, and SFrame en en 20250927T133000 20250927T143000 010000

s390: Stack tracing using Frame Pointer, Back Chain, and SFrame

PUBLIC CONFIRMED Talk https://conf.gnu-tools-cauldron.org/opo25/talk/Y3CVHY/ Auditorium B002 (170) Jens Remus PUBLISH ADVMH7@@conf.gnu-tools-cauldron.org -ADVMH7 SFrame for effective userspace stack tracing en en 20250927T143000 20250927T153000 010000

SFrame for effective userspace stack tracing

PUBLIC CONFIRMED Talk https://conf.gnu-tools-cauldron.org/opo25/talk/ADVMH7/ Auditorium B002 (170) Indu Bhagat PUBLISH B7WFVR@@conf.gnu-tools-cauldron.org -B7WFVR unload en en 20250927T090000 20250927T100000 010000

unload

This is a talk about all things "unload", my removal of the old reload code. What made it take five years? What things remain? Both in what work still remains to be done, as well as what code of the old reload remains? What are the things that can be done now that we always have LRA, instead of the old reload? We cannot have subregs of memory anymore, but no doubt other things are better now as well! PUBLIC CONFIRMED Talk https://conf.gnu-tools-cauldron.org/opo25/talk/B7WFVR/ Auditorium B003 (170) Segher PUBLISH A3LNUZ@@conf.gnu-tools-cauldron.org -A3LNUZ Hard Register Constraints en en 20250927T103000 20250927T110000 003000

Hard Register Constraints

PUBLIC CONFIRMED Talk https://conf.gnu-tools-cauldron.org/opo25/talk/A3LNUZ/ Auditorium B003 (170) Stefan Schulze Frielinghaus PUBLISH 7FJALC@@conf.gnu-tools-cauldron.org -7FJALC bunsen: testsuite result analysis depot, with a sprinkling of AI en en 20250927T110000 20250927T113000 003000

bunsen: testsuite result analysis depot, with a sprinkling of AI

PUBLIC CONFIRMED Talk (Short) https://conf.gnu-tools-cauldron.org/opo25/talk/7FJALC/ Auditorium B003 (170) Frank Ch. Eigler Martin Cermak PUBLISH VMJQCK@@conf.gnu-tools-cauldron.org -VMJQCK ga68: the GNU Algol 68 compiler en en 20250927T113000 20250927T123000 010000

ga68: the GNU Algol 68 compiler

PUBLIC CONFIRMED Talk https://conf.gnu-tools-cauldron.org/opo25/talk/VMJQCK/ Auditorium B003 (170) Jose Marchesi PUBLISH NQNCEW@@conf.gnu-tools-cauldron.org -NQNCEW What's new with diagnostics in GCC 16 en en 20250927T133000 20250927T143000 010000

What's new with diagnostics in GCC 16

PUBLIC CONFIRMED Talk https://conf.gnu-tools-cauldron.org/opo25/talk/NQNCEW/ Auditorium B003 (170) David Malcolm PUBLISH 8CAXUU@@conf.gnu-tools-cauldron.org -8CAXUU The GDB BoF en en 20250927T143000 20250927T153000 010000

The GDB BoF

PUBLIC CONFIRMED Birds of a Feather (BoF) https://conf.gnu-tools-cauldron.org/opo25/talk/8CAXUU/ Auditorium B003 (170) Pedro Alves PUBLISH VMWHG7@@conf.gnu-tools-cauldron.org -VMWHG7 Licensing Birds of a Feather en en 20250928T103000 20250928T113000 010000

Licensing Birds of a Feather

One of the FSF's Licensing and Compliance Lab's priorities is to support the GNU Project in any licensing-related challenges, collecting copyright assignments and copyright maintenance, as well as working with identified GPL violations to ensure software freedom in GNU programs is respected by distributors. You can always send us a question at <licensing@fsf.org> but we would love to use every possible opportunity to meet and talk in person. This proposed session for the FSF licensing BoF at Cauldron will help us to get to know each other better and understand what are the best ways to be of help to the GNU Project's developers. We have reached out to the maintainers and developers of the toolchain projects with RFCs, and already received some suggestions of topics to cover during this BoF, like: Licensing challenges in accepting LLM-generated source code; Practical approach to observing notice and attribution requirement in licenses of preexisting code used in GNU programs; and GPL compliance in the context of software containers. All pertinent topics we look forward to addressing and openly discussing at GNU Cauldron. People can send us more suggestions until the Cauldron and if time permits, we are also prepared to brief you about the Lab's recent work, in particular in the GPL stewardship and compliance area. PUBLIC CONFIRMED Birds of a Feather (BoF) https://conf.gnu-tools-cauldron.org/opo25/talk/VMWHG7/ Auditorium B032 (80) Krzysztof Siewicz PUBLISH VM3GNC@@conf.gnu-tools-cauldron.org -VM3GNC Rust front end post libcore en en 20250928T113000 20250928T123000 010000

Rust front end post libcore

PUBLIC CONFIRMED Talk https://conf.gnu-tools-cauldron.org/opo25/talk/VM3GNC/ Auditorium B032 (80) Pierre-Emmanuel Patry PUBLISH M7GYBJ@@conf.gnu-tools-cauldron.org -M7GYBJ Formalizing the semantics of GIMPLE en en 20250928T133000 20250928T143000 010000

Formalizing the semantics of GIMPLE

PUBLIC CONFIRMED Talk https://conf.gnu-tools-cauldron.org/opo25/talk/M7GYBJ/ Auditorium B032 (80) Krister Walfridsson PUBLISH WJNXAP@@conf.gnu-tools-cauldron.org -WJNXAP Moving BPF verifier towards classic data flow analysis techniques en en 20250928T143000 20250928T153000 010000

Moving BPF verifier towards classic data flow analysis techniques

PUBLIC CONFIRMED Talk https://conf.gnu-tools-cauldron.org/opo25/talk/WJNXAP/ Auditorium B032 (80) Eduard Zingerman PUBLISH DUAJWT@@conf.gnu-tools-cauldron.org -DUAJWT Steering Committee Q&A en en 20250928T090000 20250928T100000 010000

Steering Committee Q&A

PUBLIC CONFIRMED Talk https://conf.gnu-tools-cauldron.org/opo25/talk/DUAJWT/ Auditorium B001 (170) David Edelsohn PUBLISH SBAAAL@@conf.gnu-tools-cauldron.org -SBAAAL Handling C++ Exception Hierarchies in Ada en en 20250928T103000 20250928T110000 003000

Handling C++ Exception Hierarchies in Ada

The presentation will contrast Ada's and C++'s exception models, go through the preexisting implementation and its constraints, how we've extended exception declarations, relaxed handler constraints, exposed C++ RTTI and used it in the runtime and the library to catch C++ derived objects by Ada exceptions associated with the C++ base class, and to gain access to the caught C++ sub-objects. PUBLIC CONFIRMED Talk (Short) https://conf.gnu-tools-cauldron.org/opo25/talk/SBAAAL/ Auditorium B001 (170) Alexandre Oliva PUBLISH 3VZ9BE@@conf.gnu-tools-cauldron.org -3VZ9BE Interprocedural optimization of OpenMP kernels en en 20250928T110000 20250928T113000 003000

Interprocedural optimization of OpenMP kernels

PUBLIC CONFIRMED Talk (Short) https://conf.gnu-tools-cauldron.org/opo25/talk/3VZ9BE/ Auditorium B001 (170) Josef Melcr PUBLISH 3PTT7K@@conf.gnu-tools-cauldron.org -3PTT7K Quantifying Abstraction Costs in GCC en en 20250928T113000 20250928T120000 003000

Quantifying Abstraction Costs in GCC

This talk also serves as a soft prerequisite to my BOF as the motivations for it are covered in this talk, if you're interested in attending it you should consider being here for this one. PUBLIC CONFIRMED Talk (Short) https://conf.gnu-tools-cauldron.org/opo25/talk/3PTT7K/ Auditorium B001 (170) Alex (Waffl3x) PUBLISH GWSYPJ@@conf.gnu-tools-cauldron.org -GWSYPJ GCC BOF: Reviewing refactoring goals and acceptable abstractions en en 20250928T133000 20250928T143000 010000

GCC BOF: Reviewing refactoring goals and acceptable abstractions

This builds on top of my previous talk "Quantifying Abstraction Costs in GCC", if you plan on attending this BOF it would be beneficial to attend that talk to develop more background. PUBLIC CONFIRMED Birds of a Feather (BoF) https://conf.gnu-tools-cauldron.org/opo25/talk/GWSYPJ/ Auditorium B001 (170) Alex (Waffl3x) PUBLISH 8H8U3C@@conf.gnu-tools-cauldron.org -8H8U3C Developing a dead code elimination pass with RTL SSA en en 20250928T103000 20250928T110000 003000

Developing a dead code elimination pass with RTL SSA

For my bachelor’s thesis, I implemented a dead code elimination (DCE) pass using the RTL SSA framework in GCC. This talk aims to explain the SSA based DCE algorithm in detail, outline key aspects of the implementation and highlight the challenges and decisions encountered during development. PUBLIC CONFIRMED Talk (Short) https://conf.gnu-tools-cauldron.org/opo25/talk/8H8U3C/ Auditorium B002 (170) Ondřej Machota PUBLISH MSLAKP@@conf.gnu-tools-cauldron.org -MSLAKP Bringing AutoFDO to AARCH64: Low-Overhead, Profile Guided Optimization for AArch64 en en 20250928T110000 20250928T111500 001500

Bringing AutoFDO to AARCH64: Low-Overhead, Profile Guided Optimization for AArch64

PUBLIC CONFIRMED Lightning Talks https://conf.gnu-tools-cauldron.org/opo25/talk/MSLAKP/ Auditorium B002 (170) Kugan Vivekanandarajah PUBLISH SNB8BU@@conf.gnu-tools-cauldron.org -SNB8BU CI and Fuzzing for RISC-V en en 20250928T111500 20250928T113000 001500

CI and Fuzzing for RISC-V

PUBLIC CONFIRMED Lightning Talks https://conf.gnu-tools-cauldron.org/opo25/talk/SNB8BU/ Auditorium B002 (170) Edwin Lu PUBLISH SBAG78@@conf.gnu-tools-cauldron.org -SBAG78 Sourceware Forge: contribution workflows with Forgejo en en 20250928T113000 20250928T123000 010000

Sourceware Forge: contribution workflows with Forgejo

PUBLIC CONFIRMED Birds of a Feather (BoF) https://conf.gnu-tools-cauldron.org/opo25/talk/SBAG78/ Auditorium B002 (170) Claudio Bantaloukas Mark J. Wielaard PUBLISH 9NFAJJ@@conf.gnu-tools-cauldron.org -9NFAJJ RISC-V BoF en en 20250928T133000 20250928T143000 010000

RISC-V BoF

PUBLIC CONFIRMED Birds of a Feather (BoF) https://conf.gnu-tools-cauldron.org/opo25/talk/9NFAJJ/ Auditorium B002 (170) Jeremy Bennett PUBLISH 3SXARL@@conf.gnu-tools-cauldron.org -3SXARL Vectorizer BOF en en 20250928T103000 20250928T113000 010000

Vectorizer BOF

PUBLIC CONFIRMED Birds of a Feather (BoF) https://conf.gnu-tools-cauldron.org/opo25/talk/3SXARL/ Auditorium B003 (170) Richard Biener Tamar Christina PUBLISH SPUUDV@@conf.gnu-tools-cauldron.org -SPUUDV Source Code Analysis and Navigation: the metadatabase en en 20250928T113000 20250928T123000 010000

Source Code Analysis and Navigation: the metadatabase

Tool development for C++ in particular died on the vine in the 1990s, a victim of industry factors and perception. Today, commonly used tools like *cscope* and *etags* cannot distinguish between `std::find` and `std::map::find`. The *etags* file format was last updated in 1998 and in the introduction to its manual lists _support for C++_ as a desirable feature. Even if these broken tools worked on their own terms, they would still be inadequate. Static analysis can show, for example, everywhere a variable is modified, and where its address is taken so that it _could_ be modified, and the code paths by which that modification is effected. Static analysis can _prove_ that a variable is not modified or a function is not called from some arbitrary module. But no tool does those things. A moment's consideration reveals why: to _analyze_, say, C++, a tool must first _parse_ C++, a famously difficult proposition. For GCC, though, that is a solved problem. Let's externalize what the gcc parsers do, so tool developers can exploit them. PUBLIC CONFIRMED Talk https://conf.gnu-tools-cauldron.org/opo25/talk/SPUUDV/ Auditorium B003 (170) James K. Lowden PUBLISH B97ARA@@conf.gnu-tools-cauldron.org -B97ARA Arm/AArch64 BoF en en 20250928T133000 20250928T143000 010000

Arm/AArch64 BoF

PUBLIC CONFIRMED Birds of a Feather (BoF) https://conf.gnu-tools-cauldron.org/opo25/talk/B97ARA/ Auditorium B003 (170) Tamar Christina Alex Coplan Wilco Dijkstra PUBLISH 9NWN9S@@conf.gnu-tools-cauldron.org -9NWN9S Notes about MTE implementation en en 20250928T143000 20250928T150000 003000

Notes about MTE implementation

PUBLIC CONFIRMED Talk (Short) https://conf.gnu-tools-cauldron.org/opo25/talk/9NWN9S/ Auditorium B003 (170) Claudiu Zissulescu