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[Bug middle-end/24853] scheduling takes 40% or more time



------- Comment #5 from ebotcazou at gcc dot gnu dot org  2005-11-14 18:50 -------
Created an attachment (id=10236)
 --> (http://gcc.gnu.org/bugzilla/attachment.cgi?id=10236&action=view)
Patch (against 3.4.x) for controlling the explosion of the 1st scheduling pass.

        * params.def (PARAM_MAX_SCHED_READY_INSNS): New parameter,
        defaulting to 100.
        * params.h (MAX_SCHED_READY_INSNS): New macro.
        * haifa-sched.c: Include param.h.
        (queue_to_ready): Re-queue insns past MAX_SCHED_READY_INSNS
        for the next cycle during the first scheduling pass.
        (schedule_block): Delay insns past MAX_SCHED_READY_INSNS in
        the ready list for 1 cycle during the first scheduling pass.
        * doc/invoke.texi (--param): New parameter
        max-sched-ready-insns.


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=24853


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