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add an aggregate method for reinserting scheduled nodes, add a callback for

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priority impls that want to be notified when a node is scheduled

llvm-svn: 26678
This commit is contained in:
Chris Lattner 2006-03-10 04:32:49 +00:00
parent 0f3034a5b6
commit 1bb3ae8dae
1 changed files with 23 additions and 8 deletions
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31
lib/CodeGen/SelectionDAG/ScheduleDAGList.cpp
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@ -141,7 +141,14 @@ public:
virtual bool empty() const = 0;
virtual void push(SUnit *U) = 0;
virtual void push_all(const std::vector<SUnit *> &Nodes) = 0;
virtual SUnit *pop() = 0;
/// ScheduledNode - As each node is scheduled, this method is invoked. This
/// allows the priority function to adjust the priority of node that have
/// already been emitted.
virtual void ScheduledNode(SUnit *Node) {}
};
}
@ -340,11 +347,10 @@ void ScheduleDAGList::ListScheduleBottomUp() {
}
// Add the nodes that aren't ready back onto the available list.
while (!NotReady.empty()) {
PriorityQueue->push(NotReady.back());
NotReady.pop_back();
}
PriorityQueue->push_all(NotReady);
NotReady.clear();
PriorityQueue->ScheduledNode(CurrNode);
ScheduleNodeBottomUp(CurrNode);
}
@ -421,13 +427,12 @@ void ScheduleDAGList::ListScheduleTopDown() {
} while (!PriorityQueue->empty());
// Add the nodes that aren't ready back onto the available list.
while (!NotReady.empty()) {
PriorityQueue->push(NotReady.back());
NotReady.pop_back();
}
PriorityQueue->push_all(NotReady);
NotReady.clear();
// If we found a node to schedule, do it now.
if (FoundNode) {
PriorityQueue->ScheduledNode(FoundNode);
ScheduleNodeTopDown(FoundNode);
HazardRec->EmitInstruction(FoundNode->Node);
} else if (!HasNoopHazards) {
@ -700,6 +705,11 @@ namespace {
void push(SUnit *U) {
Queue.push(U);
}
void push_all(const std::vector<SUnit *> &Nodes) {
for (unsigned i = 0, e = Nodes.size(); i != e; ++i)
Queue.push(Nodes[i]);
}
SUnit *pop() {
SUnit *V = Queue.top();
Queue.pop();
@ -843,6 +853,11 @@ public:
void push(SUnit *U) {
Queue.push(U);
}
void push_all(const std::vector<SUnit *> &Nodes) {
for (unsigned i = 0, e = Nodes.size(); i != e; ++i)
Queue.push(Nodes[i]);
}
SUnit *pop() {
SUnit *V = Queue.top();
Queue.pop();