Le Ton Chanh <letonchanh@xxxxxxxxx> writes: > I am a beginner in porting GCC. I have defined an automata for sheduling of my port. But it seems not to run. > When configuring, I used the option '--with-schedule' and '--enable-haifa'. > When using gcc-cross, I used the option '-fschedule-insns', '-fschedule-insns2' and I tried to dump debug infomation of scheduling by '-dS' and -'dR' but it generated nothing. I am using GCC 3.3.4 for my port. > Please help me to enable the scheduler and generate scheduling debug information. In order to enable the scheduler you need to write appropriate clauses in your MD file. See the internal documentation. In current gcc you need to write define_automaton, define_cpu_unit, and define_insn_reservation clauses. I think gcc 3.3 still used the old scheduler which worked differently. Assuming you have written those, then you need to optimize (with -O) in order for the scheduler to run. Ian
