How will scheduler take care of modulo scheduling?

[Ritu Sabharwal]

Hi,
   We have done the modulo scheduling and rotating register allocation for 
GCC C compiler for IA64. But we don't know how will gcc'c scheduler and 
register allocator take care of this modulo scheduling and register 
allocation. Do we need to modify the existing scheduler and register 
allocator or need to write our own which considers the modulo scheduling 
and rotating register allocation? If modification is to done, what are 
those modifications and if new scheduler and allocator is to be written,
what is the scheme of doing that?

regards,
Ritu Sabharwal,