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[smlnj] View of /sml/trunk/src/MLRISC/scheduling/clusterBBScheduler.sml
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View of /sml/trunk/src/MLRISC/scheduling/clusterBBScheduler.sml

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Revision 775 - (download) (annotate)
Fri Jan 12 01:17:51 2001 UTC (18 years, 10 months ago) by leunga
File size: 838 byte(s)

    Merging the types labexp and mltree.
    tag leunga-20010111-labexp=mltree
(*
 * Simple minded basic block scheduling
 *) 
functor ClusterBasicBlockScheduler
   (structure Flowgraph : FLOWGRAPH
    structure BBSched   : BASIC_BLOCK_SCHEDULER
       sharing Flowgraph.I = BBSched.I
    val cpu : string ref
   ) : CLUSTER_OPTIMIZATION =
struct

   structure F = Flowgraph
   type flowgraph = F.cluster

   val name = "Basic Block Scheduling"

   fun run(cluster as F.CLUSTER{blocks, annotations, ...}) = 
   if #contains MLRiscAnnotations.NO_OPTIMIZATION (!annotations)
   then cluster
   else
   let val schedule = BBSched.schedule {cpu= !cpu}
       fun sched(F.BBLOCK{annotations, insns, ...}) = 
            if #contains MLRiscAnnotations.NO_OPTIMIZATION (!annotations) 
            then ()
            else insns := schedule(! insns)
         | sched _ = ()
   in  app sched blocks;
       cluster
   end
end

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