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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@80259 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Dan Gohman 2009-08-27 17:29:49 +00:00
parent 4c75054b01
commit 0aeed044d6
1 changed files with 56 additions and 56 deletions
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112
include/llvm/Analysis/Dominators.h
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@ -82,12 +82,12 @@ public:
typedef typename std::vector<DomTreeNodeBase<NodeT> *>::iterator iterator;
typedef typename std::vector<DomTreeNodeBase<NodeT> *>::const_iterator
const_iterator;
iterator begin() { return Children.begin(); }
iterator end() { return Children.end(); }
const_iterator begin() const { return Children.begin(); }
const_iterator end() const { return Children.end(); }
NodeT *getBlock() const { return TheBB; }
DomTreeNodeBase<NodeT> *getIDom() const { return IDom; }
const std::vector<DomTreeNodeBase<NodeT>*> &getChildren() const {
@ -96,7 +96,7 @@ public:
DomTreeNodeBase(NodeT *BB, DomTreeNodeBase<NodeT> *iDom)
: TheBB(BB), IDom(iDom), DFSNumIn(-1), DFSNumOut(-1) { }
DomTreeNodeBase<NodeT> *addChild(DomTreeNodeBase<NodeT> *C) {
Children.push_back(C);
return C;
@ -109,7 +109,7 @@ public:
void clearAllChildren() {
Children.clear();
}
bool compare(DomTreeNodeBase<NodeT> *Other) {
if (getNumChildren() != Other->getNumChildren())
return true;
@ -143,7 +143,7 @@ public:
IDom->Children.push_back(this);
}
}
/// getDFSNumIn/getDFSNumOut - These are an internal implementation detail, do
/// not call them.
unsigned getDFSNumIn() const { return DFSNumIn; }
@ -167,9 +167,9 @@ static raw_ostream &operator<<(raw_ostream &o,
WriteAsOperand(o, Node->getBlock(), false);
else
o << " <<exit node>>";
o << " {" << Node->getDFSNumIn() << "," << Node->getDFSNumOut() << "}";
return o << "\n";
}
@ -233,7 +233,7 @@ protected:
Vertex.clear();
RootNode = 0;
}
// NewBB is split and now it has one successor. Update dominator tree to
// reflect this change.
template<class N, class GraphT>
@ -320,7 +320,7 @@ public:
DomTreeNodeBase<NodeT>* MyNd = I->second;
DomTreeNodeBase<NodeT>* OtherNd = OI->second;
if (MyNd->compare(OtherNd))
return true;
}
@ -378,7 +378,7 @@ public:
&& "This is not implemented for post dominators");
return dominates(&A->getParent()->front(), A);
}
/// dominates - Returns true iff A dominates B. Note that this is not a
/// constant time operation!
///
@ -407,10 +407,10 @@ public:
inline bool dominates(NodeT *A, NodeT *B) {
if (A == B)
return true;
return dominates(getNode(A), getNode(B));
}
NodeT *getRoot() const {
assert(this->Roots.size() == 1 && "Should always have entry node!");
return this->Roots[0];
@ -522,7 +522,7 @@ public:
assert(getNode(BB) && "Removing node that isn't in dominator tree.");
DomTreeNodes.erase(BB);
}
/// splitBlock - BB is split and now it has one successor. Update dominator
/// tree to reflect this change.
void splitBlock(NodeT* NewBB) {
@ -546,7 +546,7 @@ public:
PrintDomTree<NodeT>(getRootNode(), o, 1);
}
protected:
template<class GraphT>
friend void Compress(DominatorTreeBase<typename GraphT::NodeType>& DT,
@ -561,16 +561,16 @@ protected:
friend void Link(DominatorTreeBase<typename GraphT::NodeType>& DT,
unsigned DFSNumV, typename GraphT::NodeType* W,
typename DominatorTreeBase<typename GraphT::NodeType>::InfoRec &WInfo);
template<class GraphT>
friend unsigned DFSPass(DominatorTreeBase<typename GraphT::NodeType>& DT,
typename GraphT::NodeType* V,
unsigned N);
template<class FuncT, class N>
friend void Calculate(DominatorTreeBase<typename GraphTraits<N>::NodeType>& DT,
FuncT& F);
/// updateDFSNumbers - Assign In and Out numbers to the nodes while walking
/// dominator tree in dfs order.
void updateDFSNumbers() {
@ -598,17 +598,17 @@ protected:
// Otherwise, recursively visit this child.
DomTreeNodeBase<NodeT> *Child = *ChildIt;
++WorkStack.back().second;
WorkStack.push_back(std::make_pair(Child, Child->begin()));
Child->DFSNumIn = DFSNum++;
}
}
}
SlowQueries = 0;
DFSInfoValid = true;
}
DomTreeNodeBase<NodeT> *getNodeForBlock(NodeT *BB) {
typename DomTreeNodeMapType::iterator I = this->DomTreeNodes.find(BB);
if (I != this->DomTreeNodes.end() && I->second)
@ -626,31 +626,31 @@ protected:
DomTreeNodeBase<NodeT> *C = new DomTreeNodeBase<NodeT>(BB, IDomNode);
return this->DomTreeNodes[BB] = IDomNode->addChild(C);
}
inline NodeT *getIDom(NodeT *BB) const {
typename DenseMap<NodeT*, NodeT*>::const_iterator I = IDoms.find(BB);
return I != IDoms.end() ? I->second : 0;
}
inline void addRoot(NodeT* BB) {
this->Roots.push_back(BB);
}
public:
/// recalculate - compute a dominator tree for the given function
template<class FT>
void recalculate(FT& F) {
if (!this->IsPostDominators) {
reset();
// Initialize roots
this->Roots.push_back(&F.front());
this->IDoms[&F.front()] = 0;
this->DomTreeNodes[&F.front()] = 0;
this->Vertex.push_back(0);
Calculate<FT, NodeT*>(*this, F);
updateDFSNumbers();
} else {
reset(); // Reset from the last time we were run...
@ -667,7 +667,7 @@ public:
}
this->Vertex.push_back(0);
Calculate<FT, Inverse<NodeT*> >(*this, F);
}
}
@ -683,18 +683,18 @@ class DominatorTree : public FunctionPass {
public:
static char ID; // Pass ID, replacement for typeid
DominatorTreeBase<BasicBlock>* DT;
DominatorTree() : FunctionPass(&ID) {
DT = new DominatorTreeBase<BasicBlock>(false);
}
~DominatorTree() {
DT->releaseMemory();
delete DT;
}
DominatorTreeBase<BasicBlock>& getBase() { return *DT; }
/// getRoots - Return the root blocks of the current CFG. This may include
/// multiple blocks if we are computing post dominators. For forward
/// dominators, this will always be a single block (the entry node).
@ -702,11 +702,11 @@ public:
inline const std::vector<BasicBlock*> &getRoots() const {
return DT->getRoots();
}
inline BasicBlock *getRoot() const {
return DT->getRoot();
}
inline DomTreeNode *getRootNode() const {
return DT->getRootNode();
}
@ -716,10 +716,10 @@ public:
inline bool compare(DominatorTree &Other) const {
DomTreeNode *R = getRootNode();
DomTreeNode *OtherR = Other.getRootNode();
if (!R || !OtherR || R->getBlock() != OtherR->getBlock())
return true;
if (DT->compare(Other.getBase()))
return true;
@ -727,19 +727,19 @@ public:
}
virtual bool runOnFunction(Function &F);
virtual void getAnalysisUsage(AnalysisUsage &AU) const {
AU.setPreservesAll();
}
inline bool dominates(DomTreeNode* A, DomTreeNode* B) const {
return DT->dominates(A, B);
}
inline bool dominates(BasicBlock* A, BasicBlock* B) const {
return DT->dominates(A, B);
}
// dominates - Return true if A dominates B. This performs the
// special checks necessary if A and B are in the same basic block.
bool dominates(Instruction *A, Instruction *B) const {
@ -763,72 +763,72 @@ public:
// return &*I == B;
//}
}
inline bool properlyDominates(const DomTreeNode* A, DomTreeNode* B) const {
return DT->properlyDominates(A, B);
}
inline bool properlyDominates(BasicBlock* A, BasicBlock* B) const {
return DT->properlyDominates(A, B);
}
/// findNearestCommonDominator - Find nearest common dominator basic block
/// for basic block A and B. If there is no such block then return NULL.
inline BasicBlock *findNearestCommonDominator(BasicBlock *A, BasicBlock *B) {
return DT->findNearestCommonDominator(A, B);
}
inline DomTreeNode *operator[](BasicBlock *BB) const {
return DT->getNode(BB);
}
/// getNode - return the (Post)DominatorTree node for the specified basic
/// block. This is the same as using operator[] on this class.
///
inline DomTreeNode *getNode(BasicBlock *BB) const {
return DT->getNode(BB);
}
/// addNewBlock - Add a new node to the dominator tree information. This
/// creates a new node as a child of DomBB dominator node,linking it into
/// the children list of the immediate dominator.
inline DomTreeNode *addNewBlock(BasicBlock *BB, BasicBlock *DomBB) {
return DT->addNewBlock(BB, DomBB);
}
/// changeImmediateDominator - This method is used to update the dominator
/// tree information when a node's immediate dominator changes.
///
inline void changeImmediateDominator(BasicBlock *N, BasicBlock* NewIDom) {
DT->changeImmediateDominator(N, NewIDom);
}
inline void changeImmediateDominator(DomTreeNode *N, DomTreeNode* NewIDom) {
DT->changeImmediateDominator(N, NewIDom);
}
/// eraseNode - Removes a node from the dominator tree. Block must not
/// domiante any other blocks. Removes node from its immediate dominator's
/// children list. Deletes dominator node associated with basic block BB.
inline void eraseNode(BasicBlock *BB) {
DT->eraseNode(BB);
}
/// splitBlock - BB is split and now it has one successor. Update dominator
/// tree to reflect this change.
inline void splitBlock(BasicBlock* NewBB) {
DT->splitBlock(NewBB);
}
bool isReachableFromEntry(BasicBlock* A) {
return DT->isReachableFromEntry(A);
}
virtual void releaseMemory() {
DT->releaseMemory();
}
virtual void print(raw_ostream &OS, const Module* M= 0) const;
};
@ -839,7 +839,7 @@ public:
template <> struct GraphTraits<DomTreeNode *> {
typedef DomTreeNode NodeType;
typedef NodeType::iterator ChildIteratorType;
static NodeType *getEntryNode(NodeType *N) {
return N;
}
@ -871,7 +871,7 @@ protected:
DomSetMapType Frontiers;
std::vector<BasicBlock*> Roots;
const bool IsPostDominators;
public:
DominanceFrontierBase(void *ID, bool isPostDom)
: FunctionPass(ID), IsPostDominators(isPostDom) {}
@ -881,7 +881,7 @@ public:
/// dominators, this will always be a single block (the entry node).
///
inline const std::vector<BasicBlock*> &getRoots() const { return Roots; }
/// isPostDominator - Returns true if analysis based of postdoms
///
bool isPostDominator() const { return IsPostDominators; }