I'm porting the GCC 4.0.2 (2005-08-11 snapshot) to a new VLIW architecture.
I figured out the `free_bb_for_insn()' is called before the reorg pass,
and I would like to use the CFG in the reorg pass for a reason.
The reason is:
I would like to change flag_schedule_insns_after_reload to 0 by the macro
OVERRIDE_OPTIONS if it was set,
and then I would like to call the sched2 pass in some location of the hook
TARGET_MACHINE_DEPENDENT_REORG.
Perhaps I will manually do some instruction scheduling in the reorg pass in
the future.
So I have two questions:
1. Is it safe to move the line `free_bb_for_insn ();' to the next line of
`rest_of_handle_machine_reorg ();' ?
2. If it is safe, would the GCC team like to move it to there for allowing
other ones can use CFG info
in the reorg pass?
By the way, I noticed that the ia64 port did something which is similar to mine.
But it do some effort for recoding something before the reorg pass.
Moreover, it's forced to call the `schedule_ebbs()' however(I'd like to call
`schedule_insns()').
Thanks a lot.
