Full LTO vs ThinLTO: Choosing an LLVM Link-Time Optimization Mode
A decision guide for adding LTO to a Clang/LLVM build: compare Full LTO and ThinLTO, check constraints and trade-offs, and validate with concrete commands.
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A decision guide for adding LTO to a Clang/LLVM build: compare Full LTO and ThinLTO, check constraints and trade-offs, and validate with concrete commands.
Stop letting the linker stall your CI. Learn how LLVM ThinLTO parallelizes the link step to reduce build times from 15 minutes to under 3 minutes for large C++ projects.
ThinLTO balances compile‑time speed and runtime performance by generating compact summaries during compilation and performing global optimizations in parallel, reducing link time by up to 70% while still delivering most of the benefits of full LTO.