Hello, In the new target I'm working on there are branch regs and gprs. The loads and store instructions are only to/from the gprs, so if a branch reg needs to be spilled it first needs to be moved to a gpr and then stored to memory. I've implemented mov pattern in the machine description file for the gprs and a mov pattern between gprs and branch regs; however I'm am not sure if I need to add more to model the behavior described above and if so how to do it.
Thanks, Revital
