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GCC link-time optimization lets the compiler inline functions across separate C files and remove unused code, but it trades link time and memory for smaller binaries.
GCC -flto enables whole-program optimization across object files, but it slows linking and complicates debugging. Here is how to decide and verify.
Learn how LLVM's ThinLTO balances performance, memory, and build time for large codebases. A concrete example, trade‑offs, and step‑by‑step guidance help you decide whether ThinLTO is right for your release workflow.
GCC's -flto lets the linker optimize across translation units, often shrinking release binaries at the cost of longer link times.
When a hot helper lives in another source file, traditional separate compilation keeps it as a call. LLVM’s ThinLTO lets you inline it at link time without the compile‑time cost of headers. This blog walks through the problem, the LTO mechanism, a concrete test case, and the practical trade‑offs.
GCC Link-Time Optimization moves optimization to the link step using GIMPLE bytecode, enabling cross-module inlining and dead-code removal. Learn how to enable -flto safely, verify it, and weigh build-time costs.
Architecture note on GCC LTO: requirements, minimal GIMPLE/linker-plugin design, version-locked trust boundaries, operational checks, failure modes (OOM, miscompilation), and design-change triggers (incremental LTO, C++20 modules).
Learn how GCC’s Link‑Time Optimization (LTO) can shrink binaries and boost speed. Enable it with -flto, understand the IR‑based pipeline, see a worked two‑file example, and avoid common pitfalls like memory spikes and symbol stripping.
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