[LLVMdev] LLVM-gcc scheduler

[Samah Mahmeed]

I'm a taking a compiler course and I'm supposed to implement a scheduler 
for the LLVM compiler and comapre its persformance to the existing one 
used by LLVM-gcc. I need some help understanding what is really 
happening in LLVM-gcc. In CodeGen/SelectionDAG/ I can see four different 
Schedulers, which one is used by LLVM? Can you give a hint on where/how 
to add a new scheduler and test it? or a hint on something that you need 
to be tried/improved in your scheduler?