llvm-6502/include/llvm/Analysis/PostDominators.h
Chris Lattner 45cfe545ec Change Pass::print to take a raw ostream instead of std::ostream,
update all code that this affects.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@79830 91177308-0d34-0410-b5e6-96231b3b80d8
2009-08-23 06:03:38 +00:00

97 lines
2.6 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) {
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(raw_ostream &OS, const Module*) const;
};
FunctionPass* createPostDomTree();
/// PostDominanceFrontier Class - Concrete subclass of DominanceFrontier that is
/// used to compute the a post-dominance frontier.
///
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();
} // End llvm namespace
#endif