> Ok, so if I copy the locally allocated registers into N consecutive > hard registers BEFORE the group of loads, then rerun cprp_harderg, it > should replace the ones of the loads to the ones of the copies ? And > then I suppose the copies will just disappear at a later pass, correct > ?
Something like that, to be experimented though. > I guess, my final question is, that pass will be defined with the > TARGET_MACHINE_DEPENDENT_REORG define but how do I see if a register > is free at that point ? Can I still use the TEST_HARD_REG_BIT macros ? You should use the DF framework in 4.3.x and later. -- Eric Botcazou
