1 //===- MachineDominators.cpp - Machine Dominator Calculation --------------===//
3 // The LLVM Compiler Infrastructure
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
10 // This file implements simple dominator construction algorithms for finding
11 // forward dominators on machine functions.
13 //===----------------------------------------------------------------------===//
15 #include "llvm/CodeGen/MachineDominators.h"
16 #include "llvm/CodeGen/Passes.h"
20 TEMPLATE_INSTANTIATION(class DomTreeNodeBase<MachineBasicBlock>);
21 TEMPLATE_INSTANTIATION(class DominatorTreeBase<MachineBasicBlock>);
23 char MachineDominatorTree::ID = 0;
25 static RegisterPass<MachineDominatorTree>
26 E("machinedomtree", "MachineDominator Tree Construction", true);
28 const PassInfo *const llvm::MachineDominatorsID = &E;
30 void MachineDominatorTree::getAnalysisUsage(AnalysisUsage &AU) const {
32 MachineFunctionPass::getAnalysisUsage(AU);
35 bool MachineDominatorTree::runOnMachineFunction(MachineFunction &F) {
41 MachineDominatorTree::MachineDominatorTree()
42 : MachineFunctionPass(&ID) {
43 DT = new DominatorTreeBase<MachineBasicBlock>(false);
46 MachineDominatorTree::~MachineDominatorTree() {
51 void MachineDominatorTree::releaseMemory() {