On Mon, Sep 20, 2021 at 12:07 PM Vincent Lefevre <vinc...@vinc17.net> wrote: [...] > And even the 6502 had an ADC instruction with carry-in and carry-out. > This is the most logical and intuitive behavior, as from a hardware > point of view, the carry-in and carry-out are handled *for free*.
This is not completely correct: as soon as you have an out of order micro architecture with register renaming, you'll have to add hardware to also rename flags, so it's not 100% free. But I agree that the price to pay definitely is worth it. Laurent _______________________________________________ gmp-devel mailing list gmp-devel@gmplib.org https://gmplib.org/mailman/listinfo/gmp-devel
