On May 25, 2013, at 9:22 AM, Alexander Burger <a...@software-lab.de> wrote:

> HI Jorge,
>> Well, x64 sucks, no surprise here, but not as much as x86. Perhaps a
>> good strategy here would be to use one of the C calling registers (%r9
>> for instance) as a preloaded NIL. Restoring that value after calling C
> Surely %r9 could be freed for general purposes. I don't remember if that
> would solve any problem. Why do you think of NIL especially?

You're right, upon deeper inspection it seems it doesn't solve any problem, it 
just postpones it.

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