namespace llvm {
class LatencyPriorityQueue;
-
+
/// Sorting functions for the Available queue.
struct latency_sort : public std::binary_function<SUnit*, SUnit*, bool> {
LatencyPriorityQueue *PQ;
explicit latency_sort(LatencyPriorityQueue *pq) : PQ(pq) {}
-
+
bool operator()(const SUnit* left, const SUnit* right) const;
};
class LatencyPriorityQueue : public SchedulingPriorityQueue {
// SUnits - The SUnits for the current graph.
std::vector<SUnit> *SUnits;
-
+
/// NumNodesSolelyBlocking - This vector contains, for every node in the
/// Queue, the number of nodes that the node is the sole unscheduled
/// predecessor for. This is used as a tie-breaker heuristic for better
/// mobility.
std::vector<unsigned> NumNodesSolelyBlocking;
-
+
/// Queue - The queue.
std::vector<SUnit*> Queue;
latency_sort Picker;
LatencyPriorityQueue() : Picker(this) {
}
+ bool isBottomUp() const { return false; }
+
void initNodes(std::vector<SUnit> &sunits) {
SUnits = &sunits;
NumNodesSolelyBlocking.resize(SUnits->size(), 0);
void releaseState() {
SUnits = 0;
}
-
+
unsigned getLatency(unsigned NodeNum) const {
assert(NodeNum < (*SUnits).size());
return (*SUnits)[NodeNum].getHeight();
}
-
+
unsigned getNumSolelyBlockNodes(unsigned NodeNum) const {
assert(NodeNum < NumNodesSolelyBlocking.size());
return NumNodesSolelyBlocking[NodeNum];
}
-
+
bool empty() const { return Queue.empty(); }
-
+
virtual void push(SUnit *U);
-
+
virtual SUnit *pop();
virtual void remove(SUnit *SU);
- // ScheduledNode - As nodes are scheduled, we look to see if there are any
+ virtual void dump(ScheduleDAG* DAG) const;
+
+ // scheduledNode - As nodes are scheduled, we look to see if there are any
// successor nodes that have a single unscheduled predecessor. If so, that
// single predecessor has a higher priority, since scheduling it will make
// the node available.
- void ScheduledNode(SUnit *Node);
+ void scheduledNode(SUnit *Node);
private:
void AdjustPriorityOfUnscheduledPreds(SUnit *SU);