#ifndef LLVM_ANALYSIS_POST_DOMINATORS_H
#define LLVM_ANALYSIS_POST_DOMINATORS_H
#include "llvm/Analysis/Dominators.h"
namespace llvm {
struct PostDominatorTree : public FunctionPass {
static char ID; DominatorTreeBase<BasicBlock>* DT;
PostDominatorTree() : FunctionPass(&ID) {
DT = new DominatorTreeBase<BasicBlock>(true);
}
~PostDominatorTree();
virtual bool runOnFunction(Function &F);
virtual void getAnalysisUsage(AnalysisUsage &AU) const {
AU.setPreservesAll();
}
inline const std::vector<BasicBlock*> &getRoots() const {
return DT->getRoots();
}
inline DomTreeNode *getRootNode() const {
return DT->getRootNode();
}
inline DomTreeNode *operator[](BasicBlock *BB) const {
return DT->getNode(BB);
}
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);
}
virtual void print(std::ostream &OS, const Module* M= 0) const {
DT->print(OS, M);
}
};
FunctionPass* createPostDomTree();
struct PostDominanceFrontier : public DominanceFrontierBase {
static char ID;
PostDominanceFrontier()
: DominanceFrontierBase(&ID, true) {}
virtual bool runOnFunction(Function &) {
Frontiers.clear();
PostDominatorTree &DT = getAnalysis<PostDominatorTree>();
Roots = DT.getRoots();
if (const DomTreeNode *Root = DT.getRootNode())
calculate(DT, Root);
return false;
}
virtual void getAnalysisUsage(AnalysisUsage &AU) const {
AU.setPreservesAll();
AU.addRequired<PostDominatorTree>();
}
private:
const DomSetType &calculate(const PostDominatorTree &DT,
const DomTreeNode *Node);
};
FunctionPass* createPostDomFrontier();
}
#endif