Uploaded November 2025 | Updated September 2026, 3 weeks ago

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2025 US LLVM Developers' Meeting

llvm.org/devmtg/2025-10

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Title: LT-Uh-Oh: Adventures using LTO with libc

Speakers: Paul Kirth, Daniel Thornburgh
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Slides: llvm.org/devmtg/2025-10/slides/technical_talks/kirth_thornburgh.pdf

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Link-Time Optimization (LTO) can be a powerful tool for improving the performance of C and C++ code. However, it can also be a source of subtle and hard-to-debug bugs. In this talk, we will discuss our adventures using LTO with libc. We will discuss the challenges we faced, the solutions we came up with, and the lessons we learned. We will also discuss how this work can be used to improve the quality of LTO in LLVM.

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Videos Edited by Bash Films: BashFilms.com