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Some minor scheduler changes.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@25597 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Evan Cheng 2006-01-25 09:07:50 +00:00
parent 0d718e9afc
commit 0993f1d833
1 changed files with 9 additions and 4 deletions
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13
include/llvm/CodeGen/ScheduleDAG.h
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@ -37,6 +37,7 @@ namespace llvm {
// Scheduling heuristics // Scheduling heuristics
enum SchedHeuristics { enum SchedHeuristics {
defaultScheduling, // Let the target specify its preference.
noScheduling, // No scheduling, emit breath first sequence. noScheduling, // No scheduling, emit breath first sequence.
simpleScheduling, // Two pass, min. critical path, max. utilization. simpleScheduling, // Two pass, min. critical path, max. utilization.
simpleNoItinScheduling, // Same as above exact using generic latency. simpleNoItinScheduling, // Same as above exact using generic latency.
@ -51,6 +52,8 @@ namespace llvm {
class NodeGroup { class NodeGroup {
private: private:
NIVector Members; // Group member nodes NIVector Members; // Group member nodes
NodeInfo *Top;
NodeInfo *Bottom;
NodeInfo *Dominator; // Node with highest latency NodeInfo *Dominator; // Node with highest latency
unsigned Latency; // Total latency of the group unsigned Latency; // Total latency of the group
int Pending; // Number of visits pending before int Pending; // Number of visits pending before
@ -58,10 +61,12 @@ namespace llvm {
public: public:
// Ctor. // Ctor.
NodeGroup() : Dominator(NULL), Pending(0) {} NodeGroup() : Top(NULL), Bottom(NULL), Dominator(NULL), Pending(0) {}
// Accessors // Accessors
inline void setDominator(NodeInfo *D) { Dominator = D; } inline void setDominator(NodeInfo *D) { Dominator = D; }
inline NodeInfo *getTop() { return Top; }
inline NodeInfo *getBottom() { return Bottom; }
inline NodeInfo *getDominator() { return Dominator; } inline NodeInfo *getDominator() { return Dominator; }
inline void setLatency(unsigned L) { Latency = L; } inline void setLatency(unsigned L) { Latency = L; }
inline unsigned getLatency() { return Latency; } inline unsigned getLatency() { return Latency; }
@ -94,7 +99,7 @@ namespace llvm {
class NodeInfo { class NodeInfo {
private: private:
int Pending; // Number of visits pending before int Pending; // Number of visits pending before
// adding to order // adding to order
public: public:
SDNode *Node; // DAG node SDNode *Node; // DAG node
InstrStage *StageBegin; // First stage in itinerary InstrStage *StageBegin; // First stage in itinerary
@ -279,7 +284,7 @@ namespace llvm {
/// isPassiveNode - Return true if the node is a non-scheduled leaf. /// isPassiveNode - Return true if the node is a non-scheduled leaf.
/// ///
bool isPassiveNode(SDNode *Node) { static bool isPassiveNode(SDNode *Node) {
if (isa<ConstantSDNode>(Node)) return true; if (isa<ConstantSDNode>(Node)) return true;
if (isa<RegisterSDNode>(Node)) return true; if (isa<RegisterSDNode>(Node)) return true;
if (isa<GlobalAddressSDNode>(Node)) return true; if (isa<GlobalAddressSDNode>(Node)) return true;
@ -316,7 +321,7 @@ namespace llvm {
void dump(const char *tag) const; void dump(const char *tag) const;
void dump() const; virtual void dump() const;
private: private:
/// PrepareNodeInfo - Set up the basic minimum node info for scheduling. /// PrepareNodeInfo - Set up the basic minimum node info for scheduling.