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s/DominatorTreeBase::Node/DominatorTreeBase:DomTreeNode/g

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37403 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Devang Patel 2007-06-03 06:26:14 +00:00
parent 10ac137d0b
commit bec7647f98
12 changed files with 117 additions and 117 deletions
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64
include/llvm/Analysis/Dominators.h
View File

@ -61,13 +61,13 @@ public:
/// ///
class DominatorTreeBase : public DominatorBase { class DominatorTreeBase : public DominatorBase {
public: public:
class Node; class DomTreeNode;
protected: protected:
std::map<BasicBlock*, Node*> Nodes; std::map<BasicBlock*, DomTreeNode*> DomTreeNodes;
void reset(); void reset();
typedef std::map<BasicBlock*, Node*> NodeMapType; typedef std::map<BasicBlock*, DomTreeNode*> DomTreeNodeMapType;
Node *RootNode; DomTreeNode *RootNode;
struct InfoRec { struct InfoRec {
unsigned Semi; unsigned Semi;
@ -88,16 +88,16 @@ protected:
std::map<BasicBlock*, InfoRec> Info; std::map<BasicBlock*, InfoRec> Info;
public: public:
class Node { class DomTreeNode {
friend class DominatorTree; friend class DominatorTree;
friend struct PostDominatorTree; friend struct PostDominatorTree;
friend class DominatorTreeBase; friend class DominatorTreeBase;
BasicBlock *TheBB; BasicBlock *TheBB;
Node *IDom; DomTreeNode *IDom;
std::vector<Node*> Children; std::vector<DomTreeNode*> Children;
public: public:
typedef std::vector<Node*>::iterator iterator; typedef std::vector<DomTreeNode*>::iterator iterator;
typedef std::vector<Node*>::const_iterator const_iterator; typedef std::vector<DomTreeNode*>::const_iterator const_iterator;
iterator begin() { return Children.begin(); } iterator begin() { return Children.begin(); }
iterator end() { return Children.end(); } iterator end() { return Children.end(); }
@ -105,14 +105,14 @@ public:
const_iterator end() const { return Children.end(); } const_iterator end() const { return Children.end(); }
inline BasicBlock *getBlock() const { return TheBB; } inline BasicBlock *getBlock() const { return TheBB; }
inline Node *getIDom() const { return IDom; } inline DomTreeNode *getIDom() const { return IDom; }
inline const std::vector<Node*> &getChildren() const { return Children; } inline const std::vector<DomTreeNode*> &getChildren() const { return Children; }
/// properlyDominates - Returns true iff this dominates N and this != N. /// properlyDominates - Returns true iff this dominates N and this != N.
/// Note that this is not a constant time operation! /// Note that this is not a constant time operation!
/// ///
bool properlyDominates(const Node *N) const { bool properlyDominates(const DomTreeNode *N) const {
const Node *IDom; const DomTreeNode *IDom;
if (this == 0 || N == 0) return false; if (this == 0 || N == 0) return false;
while ((IDom = N->getIDom()) != 0 && IDom != this) while ((IDom = N->getIDom()) != 0 && IDom != this)
N = IDom; // Walk up the tree N = IDom; // Walk up the tree
@ -122,16 +122,16 @@ public:
/// dominates - Returns true iff this dominates N. Note that this is not a /// dominates - Returns true iff this dominates N. Note that this is not a
/// constant time operation! /// constant time operation!
/// ///
inline bool dominates(const Node *N) const { inline bool dominates(const DomTreeNode *N) const {
if (N == this) return true; // A node trivially dominates itself. if (N == this) return true; // A node trivially dominates itself.
return properlyDominates(N); return properlyDominates(N);
} }
private: private:
inline Node(BasicBlock *BB, Node *iDom) : TheBB(BB), IDom(iDom) {} inline DomTreeNode(BasicBlock *BB, DomTreeNode *iDom) : TheBB(BB), IDom(iDom) {}
inline Node *addChild(Node *C) { Children.push_back(C); return C; } inline DomTreeNode *addChild(DomTreeNode *C) { Children.push_back(C); return C; }
void setIDom(Node *NewIDom); void setIDom(DomTreeNode *NewIDom);
}; };
public: public:
@ -144,12 +144,12 @@ public:
/// getNode - return the (Post)DominatorTree node for the specified basic /// getNode - return the (Post)DominatorTree node for the specified basic
/// block. This is the same as using operator[] on this class. /// block. This is the same as using operator[] on this class.
/// ///
inline Node *getNode(BasicBlock *BB) const { inline DomTreeNode *getNode(BasicBlock *BB) const {
NodeMapType::const_iterator i = Nodes.find(BB); DomTreeNodeMapType::const_iterator i = DomTreeNodes.find(BB);
return (i != Nodes.end()) ? i->second : 0; return (i != DomTreeNodes.end()) ? i->second : 0;
} }
inline Node *operator[](BasicBlock *BB) const { inline DomTreeNode *operator[](BasicBlock *BB) const {
return getNode(BB); return getNode(BB);
} }
@ -160,8 +160,8 @@ public:
/// post-dominance information must be capable of dealing with this /// post-dominance information must be capable of dealing with this
/// possibility. /// possibility.
/// ///
Node *getRootNode() { return RootNode; } DomTreeNode *getRootNode() { return RootNode; }
const Node *getRootNode() const { return RootNode; } const DomTreeNode *getRootNode() const { return RootNode; }
//===--------------------------------------------------------------------===// //===--------------------------------------------------------------------===//
// API to update (Post)DominatorTree information based on modifications to // API to update (Post)DominatorTree information based on modifications to
@ -171,16 +171,16 @@ public:
/// creates a new node as a child of IDomNode, linking it into the children /// creates a new node as a child of IDomNode, linking it into the children
/// list of the immediate dominator. /// list of the immediate dominator.
/// ///
Node *createNewNode(BasicBlock *BB, Node *IDomNode) { DomTreeNode *createNewNode(BasicBlock *BB, DomTreeNode *IDomNode) {
assert(getNode(BB) == 0 && "Block already in dominator tree!"); assert(getNode(BB) == 0 && "Block already in dominator tree!");
assert(IDomNode && "Not immediate dominator specified for block!"); assert(IDomNode && "Not immediate dominator specified for block!");
return Nodes[BB] = IDomNode->addChild(new Node(BB, IDomNode)); return DomTreeNodes[BB] = IDomNode->addChild(new DomTreeNode(BB, IDomNode));
} }
/// changeImmediateDominator - This method is used to update the dominator /// changeImmediateDominator - This method is used to update the dominator
/// tree information when a node's immediate dominator changes. /// tree information when a node's immediate dominator changes.
/// ///
void changeImmediateDominator(Node *N, Node *NewIDom) { void changeImmediateDominator(DomTreeNode *N, DomTreeNode *NewIDom) {
assert(N && NewIDom && "Cannot change null node pointers!"); assert(N && NewIDom && "Cannot change null node pointers!");
N->setIDom(NewIDom); N->setIDom(NewIDom);
} }
@ -190,7 +190,7 @@ public:
/// block. /// block.
void removeNode(BasicBlock *BB) { void removeNode(BasicBlock *BB) {
assert(getNode(BB) && "Removing node that isn't in dominator tree."); assert(getNode(BB) && "Removing node that isn't in dominator tree.");
Nodes.erase(BB); DomTreeNodes.erase(BB);
} }
/// print - Convert to human readable form /// print - Convert to human readable form
@ -223,7 +223,7 @@ public:
} }
private: private:
void calculate(Function& F); void calculate(Function& F);
Node *getNodeForBlock(BasicBlock *BB); DomTreeNode *getNodeForBlock(BasicBlock *BB);
unsigned DFSPass(BasicBlock *V, InfoRec &VInfo, unsigned N); unsigned DFSPass(BasicBlock *V, InfoRec &VInfo, unsigned N);
void Compress(BasicBlock *V); void Compress(BasicBlock *V);
BasicBlock *Eval(BasicBlock *v); BasicBlock *Eval(BasicBlock *v);
@ -238,8 +238,8 @@ private:
/// DominatorTree GraphTraits specialization so the DominatorTree can be /// DominatorTree GraphTraits specialization so the DominatorTree can be
/// iterable by generic graph iterators. /// iterable by generic graph iterators.
/// ///
template <> struct GraphTraits<DominatorTree::Node*> { template <> struct GraphTraits<DominatorTree::DomTreeNode*> {
typedef DominatorTree::Node NodeType; typedef DominatorTree::DomTreeNode NodeType;
typedef NodeType::iterator ChildIteratorType; typedef NodeType::iterator ChildIteratorType;
static NodeType *getEntryNode(NodeType *N) { static NodeType *getEntryNode(NodeType *N) {
@ -254,7 +254,7 @@ template <> struct GraphTraits<DominatorTree::Node*> {
}; };
template <> struct GraphTraits<DominatorTree*> template <> struct GraphTraits<DominatorTree*>
: public GraphTraits<DominatorTree::Node*> { : public GraphTraits<DominatorTree::DomTreeNode*> {
static NodeType *getEntryNode(DominatorTree *DT) { static NodeType *getEntryNode(DominatorTree *DT) {
return DT->getRootNode(); return DT->getRootNode();
} }
@ -503,7 +503,7 @@ public:
} }
private: private:
const DomSetType &calculate(const DominatorTree &DT, const DomSetType &calculate(const DominatorTree &DT,
const DominatorTree::Node *Node); const DominatorTree::DomTreeNode *Node);
}; };

6
include/llvm/Analysis/PostDominators.h
View File

@ -38,7 +38,7 @@ struct PostDominatorTree : public DominatorTreeBase {
} }
private: private:
void calculate(Function &F); void calculate(Function &F);
Node *getNodeForBlock(BasicBlock *BB); DomTreeNode *getNodeForBlock(BasicBlock *BB);
unsigned DFSPass(BasicBlock *V, InfoRec &VInfo,unsigned N); unsigned DFSPass(BasicBlock *V, InfoRec &VInfo,unsigned N);
void Compress(BasicBlock *V, InfoRec &VInfo); void Compress(BasicBlock *V, InfoRec &VInfo);
BasicBlock *Eval(BasicBlock *V); BasicBlock *Eval(BasicBlock *V);
@ -87,7 +87,7 @@ struct PostDominanceFrontier : public DominanceFrontierBase {
Frontiers.clear(); Frontiers.clear();
PostDominatorTree &DT = getAnalysis<PostDominatorTree>(); PostDominatorTree &DT = getAnalysis<PostDominatorTree>();
Roots = DT.getRoots(); Roots = DT.getRoots();
if (const DominatorTree::Node *Root = DT.getRootNode()) if (const DominatorTree::DomTreeNode *Root = DT.getRootNode())
calculate(DT, Root); calculate(DT, Root);
return false; return false;
} }
@ -99,7 +99,7 @@ struct PostDominanceFrontier : public DominanceFrontierBase {
private: private:
const DomSetType &calculate(const PostDominatorTree &DT, const DomSetType &calculate(const PostDominatorTree &DT,
const DominatorTree::Node *Node); const DominatorTree::DomTreeNode *Node);
}; };
} // End llvm namespace } // End llvm namespace

28
lib/Analysis/PostDominators.cpp
View File

@ -165,19 +165,19 @@ void PostDominatorTree::calculate(Function &F) {
// one exit block, or it may be the virtual exit (denoted by (BasicBlock *)0) // one exit block, or it may be the virtual exit (denoted by (BasicBlock *)0)
// which postdominates all real exits if there are multiple exit blocks. // which postdominates all real exits if there are multiple exit blocks.
BasicBlock *Root = Roots.size() == 1 ? Roots[0] : 0; BasicBlock *Root = Roots.size() == 1 ? Roots[0] : 0;
Nodes[Root] = RootNode = new Node(Root, 0); DomTreeNodes[Root] = RootNode = new DomTreeNode(Root, 0);
// Loop over all of the reachable blocks in the function... // Loop over all of the reachable blocks in the function...
for (Function::iterator I = F.begin(), E = F.end(); I != E; ++I) for (Function::iterator I = F.begin(), E = F.end(); I != E; ++I)
if (BasicBlock *ImmPostDom = getIDom(I)) { // Reachable block. if (BasicBlock *ImmPostDom = getIDom(I)) { // Reachable block.
Node *&BBNode = Nodes[I]; DomTreeNode *&BBNode = DomTreeNodes[I];
if (!BBNode) { // Haven't calculated this node yet? if (!BBNode) { // Haven't calculated this node yet?
// Get or calculate the node for the immediate dominator // Get or calculate the node for the immediate dominator
Node *IPDomNode = getNodeForBlock(ImmPostDom); DomTreeNode *IPDomNode = getNodeForBlock(ImmPostDom);
// Add a new tree node for this BasicBlock, and link it as a child of // Add a new tree node for this BasicBlock, and link it as a child of
// IDomNode // IDomNode
BBNode = IPDomNode->addChild(new Node(I, IPDomNode)); BBNode = IPDomNode->addChild(new DomTreeNode(I, IPDomNode));
} }
} }
@ -188,18 +188,18 @@ void PostDominatorTree::calculate(Function &F) {
} }
DominatorTreeBase::Node *PostDominatorTree::getNodeForBlock(BasicBlock *BB) { DominatorTreeBase::DomTreeNode *PostDominatorTree::getNodeForBlock(BasicBlock *BB) {
Node *&BBNode = Nodes[BB]; DomTreeNode *&BBNode = DomTreeNodes[BB];
if (BBNode) return BBNode; if (BBNode) return BBNode;
// Haven't calculated this node yet? Get or calculate the node for the // Haven't calculated this node yet? Get or calculate the node for the
// immediate postdominator. // immediate postdominator.
BasicBlock *IPDom = getIDom(BB); BasicBlock *IPDom = getIDom(BB);
Node *IPDomNode = getNodeForBlock(IPDom); DomTreeNode *IPDomNode = getNodeForBlock(IPDom);
// Add a new tree node for this BasicBlock, and link it as a child of // Add a new tree node for this BasicBlock, and link it as a child of
// IDomNode // IDomNode
return BBNode = IPDomNode->addChild(new Node(BB, IPDomNode)); return BBNode = IPDomNode->addChild(new DomTreeNode(BB, IPDomNode));
} }
//===----------------------------------------------------------------------===// //===----------------------------------------------------------------------===//
@ -215,7 +215,7 @@ ETNode *PostETForest::getNodeForBlock(BasicBlock *BB) {
// Haven't calculated this node yet? Get or calculate the node for the // Haven't calculated this node yet? Get or calculate the node for the
// immediate dominator. // immediate dominator.
PostDominatorTree::Node *node = getAnalysis<PostDominatorTree>().getNode(BB); PostDominatorTree::DomTreeNode *node = getAnalysis<PostDominatorTree>().getNode(BB);
// If we are unreachable, we may not have an immediate dominator. // If we are unreachable, we may not have an immediate dominator.
if (!node) if (!node)
@ -245,7 +245,7 @@ void PostETForest::calculate(const PostDominatorTree &DT) {
ETNode *&BBNode = Nodes[BB]; ETNode *&BBNode = Nodes[BB];
if (!BBNode) { if (!BBNode) {
ETNode *IDomNode = NULL; ETNode *IDomNode = NULL;
PostDominatorTree::Node *node = DT.getNode(BB); PostDominatorTree::DomTreeNode *node = DT.getNode(BB);
if (node && node->getIDom()) if (node && node->getIDom())
IDomNode = getNodeForBlock(node->getIDom()->getBlock()); IDomNode = getNodeForBlock(node->getIDom()->getBlock());
@ -277,7 +277,7 @@ H("postdomfrontier", "Post-Dominance Frontier Construction", true);
const DominanceFrontier::DomSetType & const DominanceFrontier::DomSetType &
PostDominanceFrontier::calculate(const PostDominatorTree &DT, PostDominanceFrontier::calculate(const PostDominatorTree &DT,
const DominatorTree::Node *Node) { const DominatorTree::DomTreeNode *Node) {
// Loop over CFG successors to calculate DFlocal[Node] // Loop over CFG successors to calculate DFlocal[Node]
BasicBlock *BB = Node->getBlock(); BasicBlock *BB = Node->getBlock();
DomSetType &S = Frontiers[BB]; // The new set to fill in... DomSetType &S = Frontiers[BB]; // The new set to fill in...
@ -287,7 +287,7 @@ PostDominanceFrontier::calculate(const PostDominatorTree &DT,
for (pred_iterator SI = pred_begin(BB), SE = pred_end(BB); for (pred_iterator SI = pred_begin(BB), SE = pred_end(BB);
SI != SE; ++SI) { SI != SE; ++SI) {
// Does Node immediately dominate this predecessor? // Does Node immediately dominate this predecessor?
DominatorTree::Node *SINode = DT[*SI]; DominatorTree::DomTreeNode *SINode = DT[*SI];
if (SINode && SINode->getIDom() != Node) if (SINode && SINode->getIDom() != Node)
S.insert(*SI); S.insert(*SI);
} }
@ -296,9 +296,9 @@ PostDominanceFrontier::calculate(const PostDominatorTree &DT,
// Loop through and visit the nodes that Node immediately dominates (Node's // Loop through and visit the nodes that Node immediately dominates (Node's
// children in the IDomTree) // children in the IDomTree)
// //
for (PostDominatorTree::Node::const_iterator for (PostDominatorTree::DomTreeNode::const_iterator
NI = Node->begin(), NE = Node->end(); NI != NE; ++NI) { NI = Node->begin(), NE = Node->end(); NI != NE; ++NI) {
DominatorTree::Node *IDominee = *NI; DominatorTree::DomTreeNode *IDominee = *NI;
const DomSetType &ChildDF = calculate(DT, IDominee); const DomSetType &ChildDF = calculate(DT, IDominee);
DomSetType::const_iterator CDFI = ChildDF.begin(), CDFE = ChildDF.end(); DomSetType::const_iterator CDFI = ChildDF.begin(), CDFE = ChildDF.end();

4
lib/Transforms/Scalar/ADCE.cpp
View File

@ -387,8 +387,8 @@ bool ADCE::doADCE() {
// postdominator that is alive, and the last postdominator that is // postdominator that is alive, and the last postdominator that is
// dead... // dead...
// //
PostDominatorTree::Node *LastNode = DT[TI->getSuccessor(i)]; PostDominatorTree::DomTreeNode *LastNode = DT[TI->getSuccessor(i)];
PostDominatorTree::Node *NextNode = 0; PostDominatorTree::DomTreeNode *NextNode = 0;
if (LastNode) { if (LastNode) {
NextNode = LastNode->getIDom(); NextNode = LastNode->getIDom();

2
lib/Transforms/Scalar/GCSE.cpp
View File

@ -94,7 +94,7 @@ bool GCSE::runOnFunction(Function &F) {
// Traverse the CFG of the function in dominator order, so that we see each // Traverse the CFG of the function in dominator order, so that we see each
// instruction after we see its operands. // instruction after we see its operands.
for (df_iterator<DominatorTree::Node*> DI = df_begin(DT.getRootNode()), for (df_iterator<DominatorTree::DomTreeNode*> DI = df_begin(DT.getRootNode()),
E = df_end(DT.getRootNode()); DI != E; ++DI) { E = df_end(DT.getRootNode()); DI != E; ++DI) {
BasicBlock *BB = DI->getBlock(); BasicBlock *BB = DI->getBlock();

8
lib/Transforms/Scalar/GVNPRE.cpp
View File

@ -87,7 +87,7 @@ namespace {
// For a given block, calculate the generated expressions, temporaries, // For a given block, calculate the generated expressions, temporaries,
// and the AVAIL_OUT set // and the AVAIL_OUT set
void CalculateAvailOut(ValueTable& VN, std::set<Value*, ExprLT>& MS, void CalculateAvailOut(ValueTable& VN, std::set<Value*, ExprLT>& MS,
DominatorTree::Node* DI, DominatorTree::DomTreeNode* DI,
std::set<Value*, ExprLT>& currExps, std::set<Value*, ExprLT>& currExps,
std::set<PHINode*>& currPhis, std::set<PHINode*>& currPhis,
std::set<Value*, ExprLT>& currTemps, std::set<Value*, ExprLT>& currTemps,
@ -262,7 +262,7 @@ void GVNPRE::dump(GVNPRE::ValueTable& VN, std::set<Value*, ExprLT>& s) {
} }
void GVNPRE::CalculateAvailOut(GVNPRE::ValueTable& VN, std::set<Value*, ExprLT>& MS, void GVNPRE::CalculateAvailOut(GVNPRE::ValueTable& VN, std::set<Value*, ExprLT>& MS,
DominatorTree::Node* DI, DominatorTree::DomTreeNode* DI,
std::set<Value*, ExprLT>& currExps, std::set<Value*, ExprLT>& currExps,
std::set<PHINode*>& currPhis, std::set<PHINode*>& currPhis,
std::set<Value*, ExprLT>& currTemps, std::set<Value*, ExprLT>& currTemps,
@ -324,7 +324,7 @@ bool GVNPRE::runOnFunction(Function &F) {
// First Phase of BuildSets - calculate AVAIL_OUT // First Phase of BuildSets - calculate AVAIL_OUT
// Top-down walk of the dominator tree // Top-down walk of the dominator tree
for (df_iterator<DominatorTree::Node*> DI = df_begin(DT.getRootNode()), for (df_iterator<DominatorTree::DomTreeNode*> DI = df_begin(DT.getRootNode()),
E = df_end(DT.getRootNode()); DI != E; ++DI) { E = df_end(DT.getRootNode()); DI != E; ++DI) {
// Get the sets to update for this block // Get the sets to update for this block
@ -350,7 +350,7 @@ bool GVNPRE::runOnFunction(Function &F) {
std::set<Value*, ExprLT> anticOut; std::set<Value*, ExprLT> anticOut;
// Top-down walk of the postdominator tree // Top-down walk of the postdominator tree
for (df_iterator<PostDominatorTree::Node*> PDI = for (df_iterator<PostDominatorTree::DomTreeNode*> PDI =
df_begin(PDT.getRootNode()), E = df_end(DT.getRootNode()); df_begin(PDT.getRootNode()), E = df_end(DT.getRootNode());
PDI != E; ++PDI) { PDI != E; ++PDI) {
BasicBlock* BB = PDI->getBlock(); BasicBlock* BB = PDI->getBlock();

16
lib/Transforms/Scalar/LICM.cpp
View File

@ -107,7 +107,7 @@ namespace {
/// visit uses before definitions, allowing us to sink a loop body in one /// visit uses before definitions, allowing us to sink a loop body in one
/// pass without iteration. /// pass without iteration.
/// ///
void SinkRegion(DominatorTree::Node *N); void SinkRegion(DominatorTree::DomTreeNode *N);
/// HoistRegion - Walk the specified region of the CFG (defined by all /// HoistRegion - Walk the specified region of the CFG (defined by all
/// blocks dominated by the specified block, and that are in the current /// blocks dominated by the specified block, and that are in the current
@ -115,7 +115,7 @@ namespace {
/// visit definitions before uses, allowing us to hoist a loop body in one /// visit definitions before uses, allowing us to hoist a loop body in one
/// pass without iteration. /// pass without iteration.
/// ///
void HoistRegion(DominatorTree::Node *N); void HoistRegion(DominatorTree::DomTreeNode *N);
/// inSubLoop - Little predicate that returns true if the specified basic /// inSubLoop - Little predicate that returns true if the specified basic
/// block is in a subloop of the current one, not the current one itself. /// block is in a subloop of the current one, not the current one itself.
@ -140,8 +140,8 @@ namespace {
if (BlockInLoop == LoopHeader) if (BlockInLoop == LoopHeader)
return true; return true;
DominatorTree::Node *BlockInLoopNode = DT->getNode(BlockInLoop); DominatorTree::DomTreeNode *BlockInLoopNode = DT->getNode(BlockInLoop);
DominatorTree::Node *IDom = DT->getNode(ExitBlock); DominatorTree::DomTreeNode *IDom = DT->getNode(ExitBlock);
// Because the exit block is not in the loop, we know we have to get _at // Because the exit block is not in the loop, we know we have to get _at
// least_ its immediate dominator. // least_ its immediate dominator.
@ -281,7 +281,7 @@ bool LICM::runOnLoop(Loop *L, LPPassManager &LPM) {
/// uses before definitions, allowing us to sink a loop body in one pass without /// uses before definitions, allowing us to sink a loop body in one pass without
/// iteration. /// iteration.
/// ///
void LICM::SinkRegion(DominatorTree::Node *N) { void LICM::SinkRegion(DominatorTree::DomTreeNode *N) {
assert(N != 0 && "Null dominator tree node?"); assert(N != 0 && "Null dominator tree node?");
BasicBlock *BB = N->getBlock(); BasicBlock *BB = N->getBlock();
@ -289,7 +289,7 @@ void LICM::SinkRegion(DominatorTree::Node *N) {
if (!CurLoop->contains(BB)) return; if (!CurLoop->contains(BB)) return;
// We are processing blocks in reverse dfo, so process children first... // We are processing blocks in reverse dfo, so process children first...
const std::vector<DominatorTree::Node*> &Children = N->getChildren(); const std::vector<DominatorTree::DomTreeNode*> &Children = N->getChildren();
for (unsigned i = 0, e = Children.size(); i != e; ++i) for (unsigned i = 0, e = Children.size(); i != e; ++i)
SinkRegion(Children[i]); SinkRegion(Children[i]);
@ -318,7 +318,7 @@ void LICM::SinkRegion(DominatorTree::Node *N) {
/// first order w.r.t the DominatorTree. This allows us to visit definitions /// first order w.r.t the DominatorTree. This allows us to visit definitions
/// before uses, allowing us to hoist a loop body in one pass without iteration. /// before uses, allowing us to hoist a loop body in one pass without iteration.
/// ///
void LICM::HoistRegion(DominatorTree::Node *N) { void LICM::HoistRegion(DominatorTree::DomTreeNode *N) {
assert(N != 0 && "Null dominator tree node?"); assert(N != 0 && "Null dominator tree node?");
BasicBlock *BB = N->getBlock(); BasicBlock *BB = N->getBlock();
@ -340,7 +340,7 @@ void LICM::HoistRegion(DominatorTree::Node *N) {
hoist(I); hoist(I);
} }
const std::vector<DominatorTree::Node*> &Children = N->getChildren(); const std::vector<DominatorTree::DomTreeNode*> &Children = N->getChildren();
for (unsigned i = 0, e = Children.size(); i != e; ++i) for (unsigned i = 0, e = Children.size(); i != e; ++i)
HoistRegion(Children[i]); HoistRegion(Children[i]);
} }

22
lib/Transforms/Scalar/PredicateSimplifier.cpp
View File

@ -1986,7 +1986,7 @@ namespace {
UnreachableBlocks UB; UnreachableBlocks UB;
ValueRanges *VR; ValueRanges *VR;
std::vector<DominatorTree::Node *> WorkList; std::vector<DominatorTree::DomTreeNode *> WorkList;
public: public:
static char ID; // Pass identification, replacement for typeid static char ID; // Pass identification, replacement for typeid
@ -2012,14 +2012,14 @@ namespace {
class VISIBILITY_HIDDEN Forwards : public InstVisitor<Forwards> { class VISIBILITY_HIDDEN Forwards : public InstVisitor<Forwards> {
friend class InstVisitor<Forwards>; friend class InstVisitor<Forwards>;
PredicateSimplifier *PS; PredicateSimplifier *PS;
DominatorTree::Node *DTNode; DominatorTree::DomTreeNode *DTNode;
public: public:
InequalityGraph &IG; InequalityGraph &IG;
UnreachableBlocks &UB; UnreachableBlocks &UB;
ValueRanges &VR; ValueRanges &VR;
Forwards(PredicateSimplifier *PS, DominatorTree::Node *DTNode) Forwards(PredicateSimplifier *PS, DominatorTree::DomTreeNode *DTNode)
: PS(PS), DTNode(DTNode), IG(*PS->IG), UB(PS->UB), VR(*PS->VR) {} : PS(PS), DTNode(DTNode), IG(*PS->IG), UB(PS->UB), VR(*PS->VR) {}
void visitTerminatorInst(TerminatorInst &TI); void visitTerminatorInst(TerminatorInst &TI);
@ -2040,19 +2040,19 @@ namespace {
// Used by terminator instructions to proceed from the current basic // Used by terminator instructions to proceed from the current basic
// block to the next. Verifies that "current" dominates "next", // block to the next. Verifies that "current" dominates "next",
// then calls visitBasicBlock. // then calls visitBasicBlock.
void proceedToSuccessors(DominatorTree::Node *Current) { void proceedToSuccessors(DominatorTree::DomTreeNode *Current) {
for (DominatorTree::Node::iterator I = Current->begin(), for (DominatorTree::DomTreeNode::iterator I = Current->begin(),
E = Current->end(); I != E; ++I) { E = Current->end(); I != E; ++I) {
WorkList.push_back(*I); WorkList.push_back(*I);
} }
} }
void proceedToSuccessor(DominatorTree::Node *Next) { void proceedToSuccessor(DominatorTree::DomTreeNode *Next) {
WorkList.push_back(Next); WorkList.push_back(Next);
} }
// Visits each instruction in the basic block. // Visits each instruction in the basic block.
void visitBasicBlock(DominatorTree::Node *Node) { void visitBasicBlock(DominatorTree::DomTreeNode *Node) {
BasicBlock *BB = Node->getBlock(); BasicBlock *BB = Node->getBlock();
ETNode *ET = Forest->getNodeForBlock(BB); ETNode *ET = Forest->getNodeForBlock(BB);
DOUT << "Entering Basic Block: " << BB->getName() DOUT << "Entering Basic Block: " << BB->getName()
@ -2064,7 +2064,7 @@ namespace {
// Tries to simplify each Instruction and add new properties to // Tries to simplify each Instruction and add new properties to
// the PropertySet. // the PropertySet.
void visitInstruction(Instruction *I, DominatorTree::Node *DT, ETNode *ET) { void visitInstruction(Instruction *I, DominatorTree::DomTreeNode *DT, ETNode *ET) {
DOUT << "Considering instruction " << *I << "\n"; DOUT << "Considering instruction " << *I << "\n";
DEBUG(IG->dump()); DEBUG(IG->dump());
@ -2132,7 +2132,7 @@ namespace {
WorkList.push_back(DT->getRootNode()); WorkList.push_back(DT->getRootNode());
do { do {
DominatorTree::Node *DTNode = WorkList.back(); DominatorTree::DomTreeNode *DTNode = WorkList.back();
WorkList.pop_back(); WorkList.pop_back();
if (!UB.isDead(DTNode->getBlock())) visitBasicBlock(DTNode); if (!UB.isDead(DTNode->getBlock())) visitBasicBlock(DTNode);
} while (!WorkList.empty()); } while (!WorkList.empty());
@ -2164,7 +2164,7 @@ namespace {
return; return;
} }
for (DominatorTree::Node::iterator I = DTNode->begin(), E = DTNode->end(); for (DominatorTree::DomTreeNode::iterator I = DTNode->begin(), E = DTNode->end();
I != E; ++I) { I != E; ++I) {
BasicBlock *Dest = (*I)->getBlock(); BasicBlock *Dest = (*I)->getBlock();
DOUT << "Branch thinking about %" << Dest->getName() DOUT << "Branch thinking about %" << Dest->getName()
@ -2194,7 +2194,7 @@ namespace {
// Set the EQProperty in each of the cases BBs, and the NEProperties // Set the EQProperty in each of the cases BBs, and the NEProperties
// in the default BB. // in the default BB.
for (DominatorTree::Node::iterator I = DTNode->begin(), E = DTNode->end(); for (DominatorTree::DomTreeNode::iterator I = DTNode->begin(), E = DTNode->end();
I != E; ++I) { I != E; ++I) {
BasicBlock *BB = (*I)->getBlock(); BasicBlock *BB = (*I)->getBlock();
DOUT << "Switch thinking about BB %" << BB->getName() DOUT << "Switch thinking about BB %" << BB->getName()

8
lib/Transforms/Utils/BreakCriticalEdges.cpp
View File

@ -203,20 +203,20 @@ bool llvm::SplitCriticalEdge(TerminatorInst *TI, unsigned SuccNum, Pass *P,
// Should we update DominatorTree information? // Should we update DominatorTree information?
if (DominatorTree *DT = P->getAnalysisToUpdate<DominatorTree>()) { if (DominatorTree *DT = P->getAnalysisToUpdate<DominatorTree>()) {
DominatorTree::Node *TINode = DT->getNode(TIBB); DominatorTree::DomTreeNode *TINode = DT->getNode(TIBB);
// The new block is not the immediate dominator for any other nodes, but // The new block is not the immediate dominator for any other nodes, but
// TINode is the immediate dominator for the new node. // TINode is the immediate dominator for the new node.
// //
if (TINode) { // Don't break unreachable code! if (TINode) { // Don't break unreachable code!
DominatorTree::Node *NewBBNode = DT->createNewNode(NewBB, TINode); DominatorTree::DomTreeNode *NewBBNode = DT->createNewNode(NewBB, TINode);
DominatorTree::Node *DestBBNode = 0; DominatorTree::DomTreeNode *DestBBNode = 0;
// If NewBBDominatesDestBB hasn't been computed yet, do so with DT. // If NewBBDominatesDestBB hasn't been computed yet, do so with DT.
if (!OtherPreds.empty()) { if (!OtherPreds.empty()) {
DestBBNode = DT->getNode(DestBB); DestBBNode = DT->getNode(DestBB);
while (!OtherPreds.empty() && NewBBDominatesDestBB) { while (!OtherPreds.empty() && NewBBDominatesDestBB) {
if (DominatorTree::Node *OPNode = DT->getNode(OtherPreds.back())) if (DominatorTree::DomTreeNode *OPNode = DT->getNode(OtherPreds.back()))
NewBBDominatesDestBB = DestBBNode->dominates(OPNode); NewBBDominatesDestBB = DestBBNode->dominates(OPNode);
OtherPreds.pop_back(); OtherPreds.pop_back();
} }

16
lib/Transforms/Utils/LCSSA.cpp
View File

@ -75,8 +75,8 @@ namespace {
void getLoopValuesUsedOutsideLoop(Loop *L, void getLoopValuesUsedOutsideLoop(Loop *L,
SetVector<Instruction*> &AffectedValues); SetVector<Instruction*> &AffectedValues);
Value *GetValueForBlock(DominatorTree::Node *BB, Instruction *OrigInst, Value *GetValueForBlock(DominatorTree::DomTreeNode *BB, Instruction *OrigInst,
std::map<DominatorTree::Node*, Value*> &Phis); std::map<DominatorTree::DomTreeNode*, Value*> &Phis);
/// inLoop - returns true if the given block is within the current loop /// inLoop - returns true if the given block is within the current loop
const bool inLoop(BasicBlock* B) { const bool inLoop(BasicBlock* B) {
@ -146,16 +146,16 @@ void LCSSA::ProcessInstruction(Instruction *Instr,
++NumLCSSA; // We are applying the transformation ++NumLCSSA; // We are applying the transformation
// Keep track of the blocks that have the value available already. // Keep track of the blocks that have the value available already.
std::map<DominatorTree::Node*, Value*> Phis; std::map<DominatorTree::DomTreeNode*, Value*> Phis;
DominatorTree::Node *InstrNode = DT->getNode(Instr->getParent()); DominatorTree::DomTreeNode *InstrNode = DT->getNode(Instr->getParent());
// Insert the LCSSA phi's into the exit blocks (dominated by the value), and // Insert the LCSSA phi's into the exit blocks (dominated by the value), and
// add them to the Phi's map. // add them to the Phi's map.
for (std::vector<BasicBlock*>::const_iterator BBI = exitBlocks.begin(), for (std::vector<BasicBlock*>::const_iterator BBI = exitBlocks.begin(),
BBE = exitBlocks.end(); BBI != BBE; ++BBI) { BBE = exitBlocks.end(); BBI != BBE; ++BBI) {
BasicBlock *BB = *BBI; BasicBlock *BB = *BBI;
DominatorTree::Node *ExitBBNode = DT->getNode(BB); DominatorTree::DomTreeNode *ExitBBNode = DT->getNode(BB);
Value *&Phi = Phis[ExitBBNode]; Value *&Phi = Phis[ExitBBNode];
if (!Phi && InstrNode->dominates(ExitBBNode)) { if (!Phi && InstrNode->dominates(ExitBBNode)) {
PHINode *PN = new PHINode(Instr->getType(), Instr->getName()+".lcssa", PHINode *PN = new PHINode(Instr->getType(), Instr->getName()+".lcssa",
@ -229,8 +229,8 @@ void LCSSA::getLoopValuesUsedOutsideLoop(Loop *L,
/// GetValueForBlock - Get the value to use within the specified basic block. /// GetValueForBlock - Get the value to use within the specified basic block.
/// available values are in Phis. /// available values are in Phis.
Value *LCSSA::GetValueForBlock(DominatorTree::Node *BB, Instruction *OrigInst, Value *LCSSA::GetValueForBlock(DominatorTree::DomTreeNode *BB, Instruction *OrigInst,
std::map<DominatorTree::Node*, Value*> &Phis) { std::map<DominatorTree::DomTreeNode*, Value*> &Phis) {
// If there is no dominator info for this BB, it is unreachable. // If there is no dominator info for this BB, it is unreachable.
if (BB == 0) if (BB == 0)
return UndefValue::get(OrigInst->getType()); return UndefValue::get(OrigInst->getType());
@ -239,7 +239,7 @@ Value *LCSSA::GetValueForBlock(DominatorTree::Node *BB, Instruction *OrigInst,
Value *&V = Phis[BB]; Value *&V = Phis[BB];
if (V) return V; if (V) return V;
DominatorTree::Node *IDom = BB->getIDom(); DominatorTree::DomTreeNode *IDom = BB->getIDom();
// Otherwise, there are two cases: we either have to insert a PHI node or we // Otherwise, there are two cases: we either have to insert a PHI node or we
// don't. We need to insert a PHI node if this block is not dominated by one // don't. We need to insert a PHI node if this block is not dominated by one

6
lib/Transforms/Utils/LoopSimplify.cpp
View File

@ -778,15 +778,15 @@ void LoopSimplify::UpdateDomInfoForRevectoredPreds(BasicBlock *NewBB,
} }
assert(NewBBIDom && "No immediate dominator found??"); assert(NewBBIDom && "No immediate dominator found??");
} }
DominatorTree::Node *NewBBIDomNode = DT->getNode(NewBBIDom); DominatorTree::DomTreeNode *NewBBIDomNode = DT->getNode(NewBBIDom);
// Create the new dominator tree node... and set the idom of NewBB. // Create the new dominator tree node... and set the idom of NewBB.
DominatorTree::Node *NewBBNode = DT->createNewNode(NewBB, NewBBIDomNode); DominatorTree::DomTreeNode *NewBBNode = DT->createNewNode(NewBB, NewBBIDomNode);
// If NewBB strictly dominates other blocks, then it is now the immediate // If NewBB strictly dominates other blocks, then it is now the immediate
// dominator of NewBBSucc. Update the dominator tree as appropriate. // dominator of NewBBSucc. Update the dominator tree as appropriate.
if (NewBBDominatesNewBBSucc) { if (NewBBDominatesNewBBSucc) {
DominatorTree::Node *NewBBSuccNode = DT->getNode(NewBBSucc); DominatorTree::DomTreeNode *NewBBSuccNode = DT->getNode(NewBBSucc);
DT->changeImmediateDominator(NewBBSuccNode, NewBBNode); DT->changeImmediateDominator(NewBBSuccNode, NewBBNode);
} }
} }

54
lib/VMCore/Dominators.cpp
View File

@ -234,7 +234,7 @@ void DominatorTree::Link(BasicBlock *V, BasicBlock *W, InfoRec &WInfo){
void DominatorTree::calculate(Function& F) { void DominatorTree::calculate(Function& F) {
BasicBlock* Root = Roots[0]; BasicBlock* Root = Roots[0];
Nodes[Root] = RootNode = new Node(Root, 0); // Add a node for the root... DomTreeNodes[Root] = RootNode = new DomTreeNode(Root, 0); // Add a node for the root...
Vertex.push_back(0); Vertex.push_back(0);
@ -282,14 +282,14 @@ void DominatorTree::calculate(Function& F) {
// Loop over all of the reachable blocks in the function... // Loop over all of the reachable blocks in the function...
for (Function::iterator I = F.begin(), E = F.end(); I != E; ++I) for (Function::iterator I = F.begin(), E = F.end(); I != E; ++I)
if (BasicBlock *ImmDom = getIDom(I)) { // Reachable block. if (BasicBlock *ImmDom = getIDom(I)) { // Reachable block.
Node *&BBNode = Nodes[I]; DomTreeNode *&BBNode = DomTreeNodes[I];
if (!BBNode) { // Haven't calculated this node yet? if (!BBNode) { // Haven't calculated this node yet?
// Get or calculate the node for the immediate dominator // Get or calculate the node for the immediate dominator
Node *IDomNode = getNodeForBlock(ImmDom); DomTreeNode *IDomNode = getNodeForBlock(ImmDom);
// Add a new tree node for this BasicBlock, and link it as a child of // Add a new tree node for this BasicBlock, and link it as a child of
// IDomNode // IDomNode
BBNode = IDomNode->addChild(new Node(I, IDomNode)); BBNode = IDomNode->addChild(new DomTreeNode(I, IDomNode));
} }
} }
@ -302,19 +302,19 @@ void DominatorTree::calculate(Function& F) {
// DominatorTreeBase::reset - Free all of the tree node memory. // DominatorTreeBase::reset - Free all of the tree node memory.
// //
void DominatorTreeBase::reset() { void DominatorTreeBase::reset() {
for (NodeMapType::iterator I = Nodes.begin(), E = Nodes.end(); I != E; ++I) for (DomTreeNodeMapType::iterator I = DomTreeNodes.begin(), E = DomTreeNodes.end(); I != E; ++I)
delete I->second; delete I->second;
Nodes.clear(); DomTreeNodes.clear();
IDoms.clear(); IDoms.clear();
Roots.clear(); Roots.clear();
Vertex.clear(); Vertex.clear();
RootNode = 0; RootNode = 0;
} }
void DominatorTreeBase::Node::setIDom(Node *NewIDom) { void DominatorTreeBase::DomTreeNode::setIDom(DomTreeNode *NewIDom) {
assert(IDom && "No immediate dominator?"); assert(IDom && "No immediate dominator?");
if (IDom != NewIDom) { if (IDom != NewIDom) {
std::vector<Node*>::iterator I = std::vector<DomTreeNode*>::iterator I =
std::find(IDom->Children.begin(), IDom->Children.end(), this); std::find(IDom->Children.begin(), IDom->Children.end(), this);
assert(I != IDom->Children.end() && assert(I != IDom->Children.end() &&
"Not in immediate dominator children set!"); "Not in immediate dominator children set!");
@ -327,22 +327,22 @@ void DominatorTreeBase::Node::setIDom(Node *NewIDom) {
} }
} }
DominatorTreeBase::Node *DominatorTree::getNodeForBlock(BasicBlock *BB) { DominatorTreeBase::DomTreeNode *DominatorTree::getNodeForBlock(BasicBlock *BB) {
Node *&BBNode = Nodes[BB]; DomTreeNode *&BBNode = DomTreeNodes[BB];
if (BBNode) return BBNode; if (BBNode) return BBNode;
// Haven't calculated this node yet? Get or calculate the node for the // Haven't calculated this node yet? Get or calculate the node for the
// immediate dominator. // immediate dominator.
BasicBlock *IDom = getIDom(BB); BasicBlock *IDom = getIDom(BB);
Node *IDomNode = getNodeForBlock(IDom); DomTreeNode *IDomNode = getNodeForBlock(IDom);
// Add a new tree node for this BasicBlock, and link it as a child of // Add a new tree node for this BasicBlock, and link it as a child of
// IDomNode // IDomNode
return BBNode = IDomNode->addChild(new Node(BB, IDomNode)); return BBNode = IDomNode->addChild(new DomTreeNode(BB, IDomNode));
} }
static std::ostream &operator<<(std::ostream &o, static std::ostream &operator<<(std::ostream &o,
const DominatorTreeBase::Node *Node) { const DominatorTreeBase::DomTreeNode *Node) {
if (Node->getBlock()) if (Node->getBlock())
WriteAsOperand(o, Node->getBlock(), false); WriteAsOperand(o, Node->getBlock(), false);
else else
@ -350,10 +350,10 @@ static std::ostream &operator<<(std::ostream &o,
return o << "\n"; return o << "\n";
} }
static void PrintDomTree(const DominatorTreeBase::Node *N, std::ostream &o, static void PrintDomTree(const DominatorTreeBase::DomTreeNode *N, std::ostream &o,
unsigned Lev) { unsigned Lev) {
o << std::string(2*Lev, ' ') << "[" << Lev << "] " << N; o << std::string(2*Lev, ' ') << "[" << Lev << "] " << N;
for (DominatorTreeBase::Node::const_iterator I = N->begin(), E = N->end(); for (DominatorTreeBase::DomTreeNode::const_iterator I = N->begin(), E = N->end();
I != E; ++I) I != E; ++I)
PrintDomTree(*I, o, Lev+1); PrintDomTree(*I, o, Lev+1);
} }
@ -387,19 +387,19 @@ namespace {
class DFCalculateWorkObject { class DFCalculateWorkObject {
public: public:
DFCalculateWorkObject(BasicBlock *B, BasicBlock *P, DFCalculateWorkObject(BasicBlock *B, BasicBlock *P,
const DominatorTree::Node *N, const DominatorTree::DomTreeNode *N,
const DominatorTree::Node *PN) const DominatorTree::DomTreeNode *PN)
: currentBB(B), parentBB(P), Node(N), parentNode(PN) {} : currentBB(B), parentBB(P), DomTreeNode(N), parentNode(PN) {}
BasicBlock *currentBB; BasicBlock *currentBB;
BasicBlock *parentBB; BasicBlock *parentBB;
const DominatorTree::Node *Node; const DominatorTree::DomTreeNode *DomTreeNode;
const DominatorTree::Node *parentNode; const DominatorTree::DomTreeNode *parentNode;
}; };
} }
const DominanceFrontier::DomSetType & const DominanceFrontier::DomSetType &
DominanceFrontier::calculate(const DominatorTree &DT, DominanceFrontier::calculate(const DominatorTree &DT,
const DominatorTree::Node *Node) { const DominatorTree::DomTreeNode *Node) {
BasicBlock *BB = Node->getBlock(); BasicBlock *BB = Node->getBlock();
DomSetType *Result = NULL; DomSetType *Result = NULL;
@ -413,8 +413,8 @@ DominanceFrontier::calculate(const DominatorTree &DT,
BasicBlock *currentBB = currentW->currentBB; BasicBlock *currentBB = currentW->currentBB;
BasicBlock *parentBB = currentW->parentBB; BasicBlock *parentBB = currentW->parentBB;
const DominatorTree::Node *currentNode = currentW->Node; const DominatorTree::DomTreeNode *currentNode = currentW->DomTreeNode;
const DominatorTree::Node *parentNode = currentW->parentNode; const DominatorTree::DomTreeNode *parentNode = currentW->parentNode;
assert (currentBB && "Invalid work object. Missing current Basic Block"); assert (currentBB && "Invalid work object. Missing current Basic Block");
assert (currentNode && "Invalid work object. Missing current Node"); assert (currentNode && "Invalid work object. Missing current Node");
DomSetType &S = Frontiers[currentBB]; DomSetType &S = Frontiers[currentBB];
@ -436,9 +436,9 @@ DominanceFrontier::calculate(const DominatorTree &DT,
// Loop through and visit the nodes that Node immediately dominates (Node's // Loop through and visit the nodes that Node immediately dominates (Node's
// children in the IDomTree) // children in the IDomTree)
bool visitChild = false; bool visitChild = false;
for (DominatorTree::Node::const_iterator NI = currentNode->begin(), for (DominatorTree::DomTreeNode::const_iterator NI = currentNode->begin(),
NE = currentNode->end(); NI != NE; ++NI) { NE = currentNode->end(); NI != NE; ++NI) {
DominatorTree::Node *IDominee = *NI; DominatorTree::DomTreeNode *IDominee = *NI;
BasicBlock *childBB = IDominee->getBlock(); BasicBlock *childBB = IDominee->getBlock();
if (visited.count(childBB) == 0) { if (visited.count(childBB) == 0) {
workList.push_back(DFCalculateWorkObject(childBB, currentBB, workList.push_back(DFCalculateWorkObject(childBB, currentBB,
@ -927,7 +927,7 @@ ETNode *ETForest::getNodeForBlock(BasicBlock *BB) {
// Haven't calculated this node yet? Get or calculate the node for the // Haven't calculated this node yet? Get or calculate the node for the
// immediate dominator. // immediate dominator.
DominatorTree::Node *node= getAnalysis<DominatorTree>().getNode(BB); DominatorTree::DomTreeNode *node= getAnalysis<DominatorTree>().getNode(BB);
// If we are unreachable, we may not have an immediate dominator. // If we are unreachable, we may not have an immediate dominator.
if (!node || !node->getIDom()) if (!node || !node->getIDom())
@ -951,7 +951,7 @@ void ETForest::calculate(const DominatorTree &DT) {
Function *F = Root->getParent(); Function *F = Root->getParent();
// Loop over all of the reachable blocks in the function... // Loop over all of the reachable blocks in the function...
for (Function::iterator I = F->begin(), E = F->end(); I != E; ++I) { for (Function::iterator I = F->begin(), E = F->end(); I != E; ++I) {
DominatorTree::Node* node = DT.getNode(I); DominatorTree::DomTreeNode* node = DT.getNode(I);
if (node && node->getIDom()) { // Reachable block. if (node && node->getIDom()) { // Reachable block.
BasicBlock* ImmDom = node->getIDom()->getBlock(); BasicBlock* ImmDom = node->getIDom()->getBlock();
ETNode *&BBNode = Nodes[I]; ETNode *&BBNode = Nodes[I];