Lightning Talks: -std=c++20 -- Will It Compile? That is the Question - Tulio Leao - CppCon 2022
https://github.com/CppCon/CppCon2022
New versions of the standard come and go and every team takes its time to adopt them, C++20 being no different. Come see some compilation issues found when porting to C++20 and ways to solve them for when the times come for yours!
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Tulio Leao
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Videos Streamed & Edited by Digital Medium: http://online.digital-medium.co.uk
Optimization remarks are Clang's logs of optimization passes, which include leads into optimization failures that might be mitigated. Deciphering raw optimization remarks seems a matter for compiler authors and select few experts, but a little-known tool called opt-viewer aims to change that - in particular with recent improvements by myself and others.
About 50% of the talk would be dedicated to real examples of missed optimizations. Most turn out to be escape-analysis and alias-analysis related, and we will devote time to discuss these in some depth.
We will also extend the discussion to other compilers and even other languages. (you really can't have a C++ presentation in Sep 2022 without at least mentioning Rust and Carbon).
If you care about performance there's an excellent chance you'd leave this talk with immediately actionable insights and surprising ways to check and improve your code in performance bottlenecks.
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Ofek Shilon
20Y C++ developer, writer and speaker in both the Linux and MS universes. Fascinated by compilers, debuggers and pretty much anything low level. Fiercely hated by his cat for no apparent reason.
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Videos Filmed & Edited by Bash Films: http://www.BashFilms.com
YouTube Channel Managed by Digital Medium Ltd https://events.digital-medium.co.uk
Case Study: Purging Undefined Behavior and Intel Assumptions in a Legacy C++ Codebase - Roth Michaels - CppCon 2022
https://github.com/CppCon/CppCon2022
For large C++ codebases, adding support for a new platform (e.g. Apple Silicon/ARM) can be a scary, expensive endeavor. One of the biggest causes for alarm is undefined behavior (UB), which is an unfortunate part of many legacy codebases; luckily there are tools to help. After a brief review of what undefined behavior (UB) is we will discuss what issues it can cause and why it should be avoided. We will look at a few real-life bugs caused by UB in our codebase and discuss a common type of UB in legacy codebases: "it works on Intel". We’ll discuss how eliminating undefined behavior from a cross platform codebase can reduce maintenance costs and make it less stressful to support new platforms for your codebase. Then, we’ll go over the specific cultural and tooling initiatives we used to eliminate undefined behavior in our C++ codebase, including how we used static analysis and clang sanitizers to identify and address issues.
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Roth Michaels
Roth Michaels is a Principal Software Engineer at iZotope/Soundwide, an industry leader in real-time audio software for music production and broadcast/film post-production. In his current role on the Audio Research Team at iZotope's parent company, Soundwide, he is focused on developing new fast prototyping frameworks. When he joined iZotope, Roth was the lead library designer of a new internal cross-platform "Glass", part of which is now available as open-source. More recently in his former role as Mix/Master Software Architect, Roth helped develop the reference implementation to move iZotope's products to subscription and led the team that launched the company’s first SaaS offering for music producers. Roth studied music composition at Brandeis University and continued his studies in the Dartmouth Digital Musics program. Roth began his career in software development writing software for his own compositions, and the works of other composers and artists, and teaching MaxMSP to composers and musicians; both private instruction and designing university courses. Before joining iZotope, he was working as a consultant for small startups working on mobile applications specializing in location services and Bluetooth.
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Videos Filmed & Edited by Bash Films: http://www.BashFilms.com
YouTube Channel Managed by Digital Medium Ltd https://events.digital-medium.co.uk
