[LLVMdev] Register allocation limitations

[Stavropoulos Nikos]

Hi all.

if there is limitation for the registers to be used together in an
instruction, should i try to change it in the register allocation pass
or should i try it somewhere else??

example. 

lets say we have to add 2 registers 

addu rx ,ry ,rz

there is a limitation  that says that the two regs that will be added they
can not have the same mod4 
so we can add r1 , r2  but cannot add r1,r5.


thanks
Stavropoulos Nikos




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