Swapping two Numbers without Temporary Variables

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  • CPython

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  • True; I probably overstated it in terms of idiom recognition (compiler enthusiast, but by no means expert). I suspect that a similar SSA or data flow analysis combined with some judicious rewrite rules like (X ^ Y) ^ Y -> X [0] are enough for the xor swap trick as well.

    [0] https://github.com/gcc-mirror/gcc/blob/9fdac7e16c940fb6264e6...

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