llvm::ConvergingVLIWScheduler

Synopsis

Declared in <llvm/CodeGen/VLIWMachineScheduler.h>

class ConvergingVLIWScheduler
    : public MachineSchedStrategy

Base Classes

Name	Description
`MachineSchedStrategy`	Interface to the scheduling algorithm used by ScheduleDAGMI.

Enums

Name	Description
`Unnamed enum`	SUnit::NodeQueueId: 0 (none), 1 (top), 2 (bot), 3 (both)

Member Functions

Name	Description
`ConvergingVLIWScheduler` [constructor]	Construct a converging VLIW scheduler with top and bottom boundaries.
`~ConvergingVLIWScheduler` [destructor] [virtual]	Destroy the converging VLIW scheduler.
`doMBBSchedRegionsTopDown` [virtual]	Return true to process MBB scheduling regions top-down.
`dumpPolicy` [virtual]	Dump the current scheduling policy to the debug stream.
`enterMBB` [virtual]	Tell the strategy that MBB is about to be processed.
`getPolicy` [virtual]	Return the current per-region scheduling policy.
`initPolicy` [virtual]	Optionally override the per-region scheduling policy.
`initialize`	`initialize` overloads
`leaveMBB` [virtual]	Tell the strategy that current MBB is done.
`pickNode` [virtual]	Pick the next node to schedule and set `IsTopNode` accordingly.
`registerRoots` [virtual]	Notify this strategy that all roots have been released (including those that depend on EntrySU or ExitSU).
`releaseBottomNode` [virtual]	Release `SU` for bottom-up scheduling once successors are resolved.
`releaseTopNode` [virtual]	Release `SU` for top-down scheduling once predecessors are resolved.
`reportPackets`	Return the total packets formed by the top and bottom resource models.
`schedNode` [virtual]	Notify that `SU` has been scheduled at the top or bottom.
`scheduleTree` [virtual]	Scheduler callback to notify that a new subtree is scheduled.
`shouldTrackLaneMasks` [virtual]	Return true if lane masks should be tracked while scheduling.
`shouldTrackPressure` [virtual]	Check if pressure tracking is needed before building the DAG and initializing this strategy. Called after initPolicy.

Protected Types

Name	Description
`SchedCandidate`	Store the state used by ConvergingVLIWScheduler heuristics, required for the lifetime of one invocation of pickNode().
`VLIWSchedBoundary`	One-sided scheduling boundary with ready queues and hazard state.

Protected Enums

Name	Description
`CandResult`	Represent the type of SchedCandidate found within a single queue.

Protected Member Functions

Name	Description
`SchedulingCost` [virtual]	Compute the scheduling cost of `SU` relative to `Candidate.`
`createVLIWResourceModel` [virtual]	Create a VLIW resource model for `STI` and `SchedModel.`
`pickNodeBidrectional`	Pick a node by comparing top and bottom candidates bidirectionally.
`pickNodeFromQueue`	Select the best candidate from `Zone` into `Candidate.`
`pressureChange`	Return the pressure-change contribution of scheduling `SU.`
`readyQueueVerboseDump`	Dump the ready queue and pressure state for verbose misched debugging.
`traceCandidate`	Trace why `SU` was considered as a scheduling candidate.

Protected Data Members

Name	Description
`Bot`	Bottom-up scheduling boundary and its ready queues.
`DAG`	Schedule DAG currently being scheduled by this strategy.
`HighPressureSets`	List of pressure sets that have a high pressure level in the region.
`SchedModel`	Target scheduling model for the current region.
`Top`	Top-down scheduling boundary and its ready queues.

Protected Static Data Members

Name	Description
`PriorityOne`	Highest-weight heuristic priority scale factor.
`PriorityThree`	Secondary heuristic priority scale factor.
`PriorityTwo`	Medium heuristic priority scale factor.
`ScaleTwo`	Secondary cost scaling divisor used by heuristics.