mirror of
https://github.com/RPCS3/llvm.git
synced 2024-12-13 14:47:00 +00:00
4cffb588f5
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@13782 91177308-0d34-0410-b5e6-96231b3b80d8
317 lines
11 KiB
C++
317 lines
11 KiB
C++
//===-- MSchedGraph.h - Scheduling Graph ------------------------*- C++ -*-===//
|
|
//
|
|
// The LLVM Compiler Infrastructure
|
|
//
|
|
// This file was developed by the LLVM research group and is distributed under
|
|
// the University of Illinois Open Source License. See LICENSE.TXT for details.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
//
|
|
// A graph class for dependencies
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
#ifndef LLVM_MSCHEDGRAPH_H
|
|
#define LLVM_MSCHEDGRAPH_H
|
|
|
|
#include "llvm/CodeGen/MachineInstr.h"
|
|
#include "llvm/Target/TargetMachine.h"
|
|
#include "Support/GraphTraits.h"
|
|
#include "Support/STLExtras.h"
|
|
#include "Support/iterator"
|
|
#include <vector>
|
|
|
|
namespace llvm {
|
|
class MSchedGraph;
|
|
class MSchedGraphNode;
|
|
template<class IteratorType, class NodeType>
|
|
class MSchedGraphNodeIterator;
|
|
|
|
|
|
struct MSchedGraphEdge {
|
|
enum DataDepOrderType {
|
|
TrueDep, AntiDep, OutputDep, NonDataDep
|
|
};
|
|
|
|
enum MSchedGraphEdgeType {
|
|
MemoryDep, ValueDep, MachineRegister
|
|
};
|
|
|
|
MSchedGraphNode *getDest() const { return dest; }
|
|
unsigned getIteDiff() { return iteDiff; }
|
|
unsigned getDepOrderType() { return depOrderType; }
|
|
|
|
private:
|
|
friend class MSchedGraphNode;
|
|
MSchedGraphEdge(MSchedGraphNode *destination, MSchedGraphEdgeType type,
|
|
unsigned deptype, unsigned diff)
|
|
: dest(destination), depType(type), depOrderType(deptype), iteDiff(diff) {}
|
|
|
|
MSchedGraphNode *dest;
|
|
MSchedGraphEdgeType depType;
|
|
unsigned depOrderType;
|
|
unsigned iteDiff;
|
|
};
|
|
|
|
class MSchedGraphNode {
|
|
|
|
const MachineInstr* Inst; //Machine Instruction
|
|
MSchedGraph* Parent; //Graph this node belongs to
|
|
unsigned latency; //Latency of Instruction
|
|
bool isBranchInstr; //Is this node the branch instr or not
|
|
|
|
std::vector<MSchedGraphNode*> Predecessors; //Predecessor Nodes
|
|
std::vector<MSchedGraphEdge> Successors;
|
|
|
|
public:
|
|
MSchedGraphNode(const MachineInstr *inst, MSchedGraph *graph,
|
|
unsigned late=0, bool isBranch=false);
|
|
|
|
//Iterators
|
|
typedef std::vector<MSchedGraphNode*>::iterator pred_iterator;
|
|
pred_iterator pred_begin() { return Predecessors.begin(); }
|
|
pred_iterator pred_end() { return Predecessors.end(); }
|
|
|
|
typedef std::vector<MSchedGraphNode*>::const_iterator pred_const_iterator;
|
|
pred_const_iterator pred_begin() const { return Predecessors.begin(); }
|
|
pred_const_iterator pred_end() const { return Predecessors.end(); }
|
|
|
|
// Successor iterators.
|
|
typedef MSchedGraphNodeIterator<std::vector<MSchedGraphEdge>::const_iterator,
|
|
const MSchedGraphNode> succ_const_iterator;
|
|
succ_const_iterator succ_begin() const;
|
|
succ_const_iterator succ_end() const;
|
|
|
|
typedef MSchedGraphNodeIterator<std::vector<MSchedGraphEdge>::iterator,
|
|
MSchedGraphNode> succ_iterator;
|
|
succ_iterator succ_begin();
|
|
succ_iterator succ_end();
|
|
|
|
|
|
|
|
void addOutEdge(MSchedGraphNode *destination,
|
|
MSchedGraphEdge::MSchedGraphEdgeType type,
|
|
unsigned deptype, unsigned diff=0) {
|
|
Successors.push_back(MSchedGraphEdge(destination, type, deptype,diff));
|
|
destination->Predecessors.push_back(this);
|
|
}
|
|
const MachineInstr* getInst() { return Inst; }
|
|
MSchedGraph* getParent() { return Parent; }
|
|
bool hasPredecessors() { return (Predecessors.size() > 0); }
|
|
bool hasSuccessors() { return (Successors.size() > 0); }
|
|
int getLatency() { return latency; }
|
|
MSchedGraphEdge getInEdge(MSchedGraphNode *pred);
|
|
unsigned getInEdgeNum(MSchedGraphNode *pred);
|
|
|
|
bool isSuccessor(MSchedGraphNode *);
|
|
bool isPredecessor(MSchedGraphNode *);
|
|
bool isBranch() { return isBranchInstr; }
|
|
//Debug support
|
|
void print(std::ostream &os) const;
|
|
|
|
};
|
|
|
|
template<class IteratorType, class NodeType>
|
|
class MSchedGraphNodeIterator : public forward_iterator<NodeType*, ptrdiff_t> {
|
|
IteratorType I; // std::vector<MSchedGraphEdge>::iterator or const_iterator
|
|
public:
|
|
MSchedGraphNodeIterator(IteratorType i) : I(i) {}
|
|
|
|
bool operator==(const MSchedGraphNodeIterator RHS) const { return I == RHS.I; }
|
|
bool operator!=(const MSchedGraphNodeIterator RHS) const { return I != RHS.I; }
|
|
|
|
const MSchedGraphNodeIterator &operator=(const MSchedGraphNodeIterator &RHS) {
|
|
I = RHS.I;
|
|
return *this;
|
|
}
|
|
|
|
NodeType* operator*() const {
|
|
return I->getDest();
|
|
}
|
|
NodeType* operator->() const { return operator*(); }
|
|
|
|
MSchedGraphNodeIterator& operator++() { // Preincrement
|
|
++I;
|
|
return *this;
|
|
}
|
|
MSchedGraphNodeIterator operator++(int) { // Postincrement
|
|
MSchedGraphNodeIterator tmp = *this; ++*this; return tmp;
|
|
}
|
|
|
|
MSchedGraphEdge &getEdge() {
|
|
return *I;
|
|
}
|
|
const MSchedGraphEdge &getEdge() const {
|
|
return *I;
|
|
}
|
|
};
|
|
|
|
inline MSchedGraphNode::succ_const_iterator MSchedGraphNode::succ_begin() const {
|
|
return succ_const_iterator(Successors.begin());
|
|
}
|
|
inline MSchedGraphNode::succ_const_iterator MSchedGraphNode::succ_end() const {
|
|
return succ_const_iterator(Successors.end());
|
|
}
|
|
inline MSchedGraphNode::succ_iterator MSchedGraphNode::succ_begin() {
|
|
return succ_iterator(Successors.begin());
|
|
}
|
|
inline MSchedGraphNode::succ_iterator MSchedGraphNode::succ_end() {
|
|
return succ_iterator(Successors.end());
|
|
}
|
|
|
|
// ostream << operator for MSGraphNode class
|
|
inline std::ostream &operator<<(std::ostream &os,
|
|
const MSchedGraphNode &node) {
|
|
node.print(os);
|
|
return os;
|
|
}
|
|
|
|
|
|
|
|
class MSchedGraph {
|
|
|
|
const MachineBasicBlock *BB; //Machine basic block
|
|
const TargetMachine &Target; //Target Machine
|
|
|
|
//Nodes
|
|
std::map<const MachineInstr*, MSchedGraphNode*> GraphMap;
|
|
|
|
//Add Nodes and Edges to this graph for our BB
|
|
typedef std::pair<int, MSchedGraphNode*> OpIndexNodePair;
|
|
void buildNodesAndEdges();
|
|
void addValueEdges(std::vector<OpIndexNodePair> &NodesInMap,
|
|
MSchedGraphNode *node,
|
|
bool nodeIsUse, bool nodeIsDef, int diff=0);
|
|
void addMachRegEdges(std::map<int,
|
|
std::vector<OpIndexNodePair> >& regNumtoNodeMap);
|
|
void addMemEdges(const std::vector<MSchedGraphNode*>& memInst);
|
|
|
|
public:
|
|
MSchedGraph(const MachineBasicBlock *bb, const TargetMachine &targ);
|
|
~MSchedGraph();
|
|
|
|
//Add Nodes to the Graph
|
|
void addNode(const MachineInstr* MI, MSchedGraphNode *node);
|
|
|
|
//iterators
|
|
typedef std::map<const MachineInstr*, MSchedGraphNode*>::iterator iterator;
|
|
typedef std::map<const MachineInstr*, MSchedGraphNode*>::const_iterator const_iterator;
|
|
typedef std::map<const MachineInstr*, MSchedGraphNode*>::reverse_iterator reverse_iterator;
|
|
iterator find(const MachineInstr* I) { return GraphMap.find(I); }
|
|
iterator end() { return GraphMap.end(); }
|
|
iterator begin() { return GraphMap.begin(); }
|
|
reverse_iterator rbegin() { return GraphMap.rbegin(); }
|
|
reverse_iterator rend() { return GraphMap.rend(); }
|
|
const TargetMachine* getTarget() { return &Target; }
|
|
};
|
|
|
|
|
|
static MSchedGraphNode& getSecond(std::pair<const MachineInstr* const,
|
|
MSchedGraphNode*> &Pair) {
|
|
return *Pair.second;
|
|
}
|
|
|
|
|
|
|
|
// Provide specializations of GraphTraits to be able to use graph
|
|
// iterators on the scheduling graph!
|
|
//
|
|
template <> struct GraphTraits<MSchedGraph*> {
|
|
typedef MSchedGraphNode NodeType;
|
|
typedef MSchedGraphNode::succ_iterator ChildIteratorType;
|
|
|
|
static inline ChildIteratorType child_begin(NodeType *N) {
|
|
return N->succ_begin();
|
|
}
|
|
static inline ChildIteratorType child_end(NodeType *N) {
|
|
return N->succ_end();
|
|
}
|
|
|
|
typedef std::pointer_to_unary_function<std::pair<const MachineInstr* const,
|
|
MSchedGraphNode*>&, MSchedGraphNode&> DerefFun;
|
|
|
|
typedef mapped_iterator<MSchedGraph::iterator, DerefFun> nodes_iterator;
|
|
static nodes_iterator nodes_begin(MSchedGraph *G) {
|
|
return map_iterator(((MSchedGraph*)G)->begin(), DerefFun(getSecond));
|
|
}
|
|
static nodes_iterator nodes_end(MSchedGraph *G) {
|
|
return map_iterator(((MSchedGraph*)G)->end(), DerefFun(getSecond));
|
|
}
|
|
|
|
|
|
};
|
|
|
|
template <> struct GraphTraits<const MSchedGraph*> {
|
|
typedef const MSchedGraphNode NodeType;
|
|
typedef MSchedGraphNode::succ_const_iterator ChildIteratorType;
|
|
|
|
static inline ChildIteratorType child_begin(NodeType *N) {
|
|
return N->succ_begin();
|
|
}
|
|
static inline ChildIteratorType child_end(NodeType *N) {
|
|
return N->succ_end();
|
|
}
|
|
typedef std::pointer_to_unary_function<std::pair<const MachineInstr* const,
|
|
MSchedGraphNode*>&, MSchedGraphNode&> DerefFun;
|
|
|
|
typedef mapped_iterator<MSchedGraph::iterator, DerefFun> nodes_iterator;
|
|
static nodes_iterator nodes_begin(MSchedGraph *G) {
|
|
return map_iterator(((MSchedGraph*)G)->begin(), DerefFun(getSecond));
|
|
}
|
|
static nodes_iterator nodes_end(MSchedGraph *G) {
|
|
return map_iterator(((MSchedGraph*)G)->end(), DerefFun(getSecond));
|
|
}
|
|
};
|
|
|
|
template <> struct GraphTraits<Inverse<MSchedGraph*> > {
|
|
typedef MSchedGraphNode NodeType;
|
|
typedef MSchedGraphNode::pred_iterator ChildIteratorType;
|
|
|
|
static inline ChildIteratorType child_begin(NodeType *N) {
|
|
return N->pred_begin();
|
|
}
|
|
static inline ChildIteratorType child_end(NodeType *N) {
|
|
return N->pred_end();
|
|
}
|
|
typedef std::pointer_to_unary_function<std::pair<const MachineInstr* const,
|
|
MSchedGraphNode*>&, MSchedGraphNode&> DerefFun;
|
|
|
|
typedef mapped_iterator<MSchedGraph::iterator, DerefFun> nodes_iterator;
|
|
static nodes_iterator nodes_begin(MSchedGraph *G) {
|
|
return map_iterator(((MSchedGraph*)G)->begin(), DerefFun(getSecond));
|
|
}
|
|
static nodes_iterator nodes_end(MSchedGraph *G) {
|
|
return map_iterator(((MSchedGraph*)G)->end(), DerefFun(getSecond));
|
|
}
|
|
};
|
|
|
|
template <> struct GraphTraits<Inverse<const MSchedGraph*> > {
|
|
typedef const MSchedGraphNode NodeType;
|
|
typedef MSchedGraphNode::pred_const_iterator ChildIteratorType;
|
|
|
|
static inline ChildIteratorType child_begin(NodeType *N) {
|
|
return N->pred_begin();
|
|
}
|
|
static inline ChildIteratorType child_end(NodeType *N) {
|
|
return N->pred_end();
|
|
}
|
|
|
|
typedef std::pointer_to_unary_function<std::pair<const MachineInstr* const,
|
|
MSchedGraphNode*>&, MSchedGraphNode&> DerefFun;
|
|
|
|
typedef mapped_iterator<MSchedGraph::iterator, DerefFun> nodes_iterator;
|
|
static nodes_iterator nodes_begin(MSchedGraph *G) {
|
|
return map_iterator(((MSchedGraph*)G)->begin(), DerefFun(getSecond));
|
|
}
|
|
static nodes_iterator nodes_end(MSchedGraph *G) {
|
|
return map_iterator(((MSchedGraph*)G)->end(), DerefFun(getSecond));
|
|
}
|
|
};
|
|
|
|
|
|
|
|
|
|
}
|
|
|
|
#endif
|