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llvm-6502/lib/Analysis/PostDominators.cpp
Chris Lattner 1a8b9dd7fb remove postdom frontiers, because it is dead. Forward dom frontiers are
still used by RegionInfo :(


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@128943 91177308-0d34-0410-b5e6-96231b3b80d8
2011-04-05 21:57:17 +00:00

52 lines
1.5 KiB
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//===- PostDominators.cpp - Post-Dominator Calculation --------------------===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// This file implements the post-dominator construction algorithms.
//
//===----------------------------------------------------------------------===//
#define DEBUG_TYPE "postdomtree"
#include "llvm/Analysis/PostDominators.h"
#include "llvm/Instructions.h"
#include "llvm/Support/CFG.h"
#include "llvm/Support/Debug.h"
#include "llvm/ADT/DepthFirstIterator.h"
#include "llvm/ADT/SetOperations.h"
#include "llvm/Assembly/Writer.h"
#include "llvm/Analysis/DominatorInternals.h"
using namespace llvm;
//===----------------------------------------------------------------------===//
// PostDominatorTree Implementation
//===----------------------------------------------------------------------===//
char PostDominatorTree::ID = 0;
INITIALIZE_PASS(PostDominatorTree, "postdomtree",
"Post-Dominator Tree Construction", true, true)
bool PostDominatorTree::runOnFunction(Function &F) {
DT->recalculate(F);
return false;
}
PostDominatorTree::~PostDominatorTree() {
delete DT;
}
void PostDominatorTree::print(raw_ostream &OS, const Module *) const {
DT->print(OS);
}
FunctionPass* llvm::createPostDomTree() {
return new PostDominatorTree();
}