On 06/05/2010 10:00, Amker.Cheng wrote: > here is the question : Is it possible to replace all direct fpload > with "load_into_gpr ; move_gpr_into_fpr" > sequence. I doubt it since the reload pass might generate direct > fpload insn for spilling fpu register.
It is possible. Your expander can handle it before reload; to handle it during and after reload, you need to implement a TARGET_SECONDARY_RELOAD hook. http://gcc.gnu.org/onlinedocs/gccint/Register-Classes.html#index-TARGET_005fSECONDARY_005fRELOAD-3974 cheers, DaveK
