Re: Integer subtype and NaN trick

[Miles Bader <miles@...>]

Coda Highland <chighland@gmail.com> writes:
> The problem is that on modern OSes, you can't assume that you can
> fit a 64-bit pointer in 48 bits.

My impression was that current implementations of the x86-64
architecture only use 48 bits of addresses, requiring the upper 16
bits to be identical.  Has this changed with very recent
implementations?

> This is (part of) why LuaJIT demands to use the low 2GB.

Yeah the 2GB limitation is a huge lose... but that's obviously a lot
more restrictive than necessary...

-miles

-- 
Insurrection, n. An unsuccessful revolution.