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Developer tools · #gcc
Learn how to use GCC's Link Time Optimization (LTO) to reduce binary size and improve performance by breaking the isolation between translation units.
A practical guide to using GCC's `__builtin_expect` to move cold error paths out of hot loops, with verification steps and honest trade-offs.
Learn how to use GCC's `__builtin_expect` to keep rare error-handling code out of the hot path, when it beats profile-guided optimization, and how to verify the generated assembly.
Stop letting translation units limit your performance. Learn how GCC's Link Time Optimization (LTO) enables cross-module inlining and global dead code elimination to shrink binaries and boost speed.
Learn how to enable PAC on ARMv8.5‑A CPUs, compile with GCC/Clang, verify runtime support, and fall back if the hardware lacks the feature.
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.
GCC's -fanalyzer catches double-free and use-after-free bugs that -Wall misses. A worked example shows how it traces feasible paths across branches, plus practical advice on CI integration, false-positive triage, and combining with AddressSanitizer.
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