Expect(optimized)
summary
Method uses compiler attributes to mark function start/end, prevents reordering, compiles and dumps machine code, then compare instruction size between a baseline lambda and the optimized candidate; if candidate size is <= baseline it counts as optimized. Works with lambdas and defaults baseline deduction so simple UB examples (integer overflow) and a regex-expression library case both verify optimization. Requires only a few lines of code and the compiler output, no external tools, and yields deterministic size checks.
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