mirror of
https://github.com/RPCS3/llvm-mirror.git
synced 2024-10-31 07:52:55 +01:00
107 lines
2.8 KiB
C++
107 lines
2.8 KiB
C++
//=- llvm/Analysis/PostDominators.h - Post Dominator Calculation-*- C++ -*-===//
|
|
//
|
|
// The LLVM Compiler Infrastructure
|
|
//
|
|
// This file is distributed under the University of Illinois Open Source
|
|
// License. See LICENSE.TXT for details.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
//
|
|
// This file exposes interfaces to post dominance information.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
#ifndef LLVM_ANALYSIS_POST_DOMINATORS_H
|
|
#define LLVM_ANALYSIS_POST_DOMINATORS_H
|
|
|
|
#include "llvm/Analysis/Dominators.h"
|
|
|
|
namespace llvm {
|
|
|
|
/// PostDominatorTree Class - Concrete subclass of DominatorTree that is used to
|
|
/// compute the a post-dominator tree.
|
|
///
|
|
struct PostDominatorTree : public FunctionPass {
|
|
static char ID; // Pass identification, replacement for typeid
|
|
DominatorTreeBase<BasicBlock>* DT;
|
|
|
|
PostDominatorTree() : FunctionPass(ID) {
|
|
initializePostDominatorTreePass(*PassRegistry::getPassRegistry());
|
|
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 DomTreeNode *getNode(BasicBlock *BB) const {
|
|
return DT->getNode(BB);
|
|
}
|
|
|
|
inline bool dominates(DomTreeNode* A, DomTreeNode* B) const {
|
|
return DT->dominates(A, B);
|
|
}
|
|
|
|
inline bool dominates(const BasicBlock* A, const BasicBlock* B) const {
|
|
return DT->dominates(A, 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);
|
|
}
|
|
|
|
inline BasicBlock *findNearestCommonDominator(BasicBlock *A, BasicBlock *B) {
|
|
return DT->findNearestCommonDominator(A, B);
|
|
}
|
|
|
|
virtual void releaseMemory() {
|
|
DT->releaseMemory();
|
|
}
|
|
|
|
virtual void print(raw_ostream &OS, const Module*) const;
|
|
};
|
|
|
|
FunctionPass* createPostDomTree();
|
|
|
|
template <> struct GraphTraits<PostDominatorTree*>
|
|
: public GraphTraits<DomTreeNode*> {
|
|
static NodeType *getEntryNode(PostDominatorTree *DT) {
|
|
return DT->getRootNode();
|
|
}
|
|
|
|
static nodes_iterator nodes_begin(PostDominatorTree *N) {
|
|
if (getEntryNode(N))
|
|
return df_begin(getEntryNode(N));
|
|
else
|
|
return df_end(getEntryNode(N));
|
|
}
|
|
|
|
static nodes_iterator nodes_end(PostDominatorTree *N) {
|
|
return df_end(getEntryNode(N));
|
|
}
|
|
};
|
|
|
|
} // End llvm namespace
|
|
|
|
#endif
|