Re: [Squeak-VMdev] Versiojn 4 changes

[Ian P. <ian...@in...>]

Hi Yoshiki,

> how about using "01" for OOP and "00" for SmallInteger?  Some 
> processor's addressing mode let us
> access the word-aligned memory with such pointer, while "no-tag" for 
> SmallInteger may save some bit-operations.

The effectiveness of this depends on whether you can keep -1 around 
permanently in a register to use as an index (or add it in as a 
constant) on all pointer defeferencing operations.  The G5 can do that 
(either of them).  I don't believe the Itanium can, however.

Cheers,
Ian