Re: questions about COND_EXEC and SMS

2013-12-11 Thread Steven Bosscher
On Thu, Dec 5, 2013 at 12:11 PM, dxq wrote: > hi all, > > *We found that COND_EXEC is better than IF_THEN_ELSE when used as expressing > condition move insns, because in sched, IF_THEN_ELSE insn has a dependence > on itself, and COND_EXEC has not. > * Besides, IF_THEN_ELSE is not good for SMS. som

questions about COND_EXEC and SMS

2013-12-05 Thread dxq
hi all, *We found that COND_EXEC is better than IF_THEN_ELSE when used as expressing condition move insns, because in sched, IF_THEN_ELSE insn has a dependence on itself, and COND_EXEC has not. * Besides, IF_THEN_ELSE is not good for SMS. some backend (frv) expands condition move as IF_THEN_ELSE