What Every C++ Programmer Should Know About Modern Compilers
summary
Compilers are modular with a front end and back end, not a black box, and GCC already supports more than 60 targets and nine front‑end languages; the back end does most optimizations including link‑time and profile‑guided passes and can out‑optimize hand‑tuned idioms. Tooling includes UBSan/ASan/TSan/CFSanitizer/EfficiencySanitizer for runtime checks, static tools built on the compiler for 100%‑accurate parsing, and experimental stochastic optimizers like Stoke that mutate short instruction sequences to find faster variants.
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