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Re: Variable registers

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Klaas-Jan Stol
October 1, 2005 09:11
Re: Variable registers
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Leopold Toetsch wrote:

> On Oct 1, 2005, at 8:46, <> wrote:
>> hi,
>> I read that with the new calling conventions, there are a variable 
>> number of registers. So, if I understand correctly, if a function 
>> call takes 2 parameters, then there are only 2, and if there are 30 
>> parameters, there will be a frame holding 30 registers. Is this about 
>> right?
> Yes. The argument passing opcodes take a variable amount of registers
>> How does this stand WRT the 32 registers in Parrot. Is this still the 
>> case, or will this change as well?
> This will change. Register frame size and thus the amount of registers 
> will be adapted to the actual usage of a subroutine.

ah I thought so. just making sure. Then another question WRT this; will 
there be a register allocator? In other words, an attempt to minimize 
the number of needed registers? (in my simple code generator 
implementations, any time I need a new register, I just increment a 
counter, and use that, so in that case there is  No register allocation 


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