Re: declare 64 bit integers?


Yes, it is possible:

I once wrote such a contrib for SBCL implementing "long long"-style
inline (signed-byte 64) arithmetic on x86.

SBCL's register allocation is not designed for pairing of arbitrary
registers, but it was possible to make it work with minimal effort by
only pairing registers that are adjacent (according to the compiler's
idea of how the registers are numbered).

How in the world do I go about doing that?

.

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