unschedule insn functionality needed

[Ian Lance Taylor]

Alex Turjan <aturjan@yahoo.com> writes:

> Can anybody give me a hint on where (perhaps some branch) I can find functionality 
> which allows during scheduling to un-schedule an instruction? I basically need 
> a function that does the oposite of schedule_insn. 
>
> During scheduling I want o schedule_insn(INSN), then check the ready_list and then (in case)
> unschedule INSN. 

I don't think there is any way to do specifically what you are asking
for, but perhaps you can solve your problem using
TARGET_SCHED_DEPENDENCIES_EVALUATION_HOOK .

Ian