Appendix B Recommended Priority.rules Synthesis Script file

We found the following choice of options in the synthesis script produces the best synthesis results for data-intensive designs with complex control flow.

//line format: <functiontype>=<functionvalue> 
[SchedulerFunctions]
ScheduleRegionWalkerFunction=topDownBasicBlockNoEmpty
CandidateValidatorFunction=candidateValidatorPriority
CandidateMoverFunction=TbzMover
LoopSchedulingFunction=RDLP
CandidateRegionWalkerFunction=topDownGlobal
PreSchedulingStepFunction=preSchedulingPriority
PostSchedulingStepFunction=postSchedulingPriority
PreLoopSchedulingFunction=prepareForRDLP
PostLoopSchedulingFunction=constantPropagation
PreSchedulingFunction=initPriorities
ReDoHTGsForDupUp=false  // true or false - false is better
ReassignPriorityForCS=true      // true or false - true is better
PriorityType=max  // max, sum, maxNoCond - max is best
RestrictDupUpType=targetBBUnsched // none, afterSchedOnce, targetBBUnsched
BranchBalancingDuringCMs=true // true or false - true is better
BranchBalancingDuringTraversal=true   // true or false - true is better
DynamicCSE=true

[CodeMotionRules]
RenamingAllowed=true
AcrossHTGCodeMotionAllowed=true
SpeculationAllowed=true
ReverseSpeculationAllowed=true
EarlyCondExecAllowed=true
ConditionalSpeculationAllowed=true

// the higher the cost, the more profitable a code motion is
// total cost = basicCost * CostOfEachCodeMotion
[CodeMotionCosts]
WithinBB                1
AcrossHTGCodeMotion     1
Speculation             1
DuplicationUp           1