MachineDominators.cpp revision 267654
146283Sdfr//===- MachineDominators.cpp - Machine Dominator Calculation --------------===// 246283Sdfr// 398944Sobrien// The LLVM Compiler Infrastructure 498944Sobrien// 546283Sdfr// This file is distributed under the University of Illinois Open Source 698944Sobrien// License. See LICENSE.TXT for details. 746283Sdfr// 898944Sobrien//===----------------------------------------------------------------------===// 998944Sobrien// 1098944Sobrien// This file implements simple dominator construction algorithms for finding 1198944Sobrien// forward dominators on machine functions. 1246283Sdfr// 1398944Sobrien//===----------------------------------------------------------------------===// 1498944Sobrien 1598944Sobrien#include "llvm/CodeGen/MachineDominators.h" 1698944Sobrien#include "llvm/CodeGen/Passes.h" 1746283Sdfr 1898944Sobrienusing namespace llvm; 1998944Sobrien 2098944Sobriennamespace llvm { 2198944SobrienTEMPLATE_INSTANTIATION(class DomTreeNodeBase<MachineBasicBlock>); 2298944SobrienTEMPLATE_INSTANTIATION(class DominatorTreeBase<MachineBasicBlock>); 2346283Sdfr} 2446283Sdfr 2546283Sdfrchar MachineDominatorTree::ID = 0; 2646283Sdfr 2746283SdfrINITIALIZE_PASS(MachineDominatorTree, "machinedomtree", 2846283Sdfr "MachineDominator Tree Construction", true, true) 2946283Sdfr 3046283Sdfrchar &llvm::MachineDominatorsID = MachineDominatorTree::ID; 3146283Sdfr 3246283Sdfrvoid MachineDominatorTree::getAnalysisUsage(AnalysisUsage &AU) const { 3346283Sdfr AU.setPreservesAll(); 3446283Sdfr MachineFunctionPass::getAnalysisUsage(AU); 3546283Sdfr} 3646283Sdfr 3746283Sdfrbool MachineDominatorTree::runOnMachineFunction(MachineFunction &F) { 3846283Sdfr DT->recalculate(F); 3998944Sobrien 4046283Sdfr return false; 4146283Sdfr} 4246283Sdfr 4398944SobrienMachineDominatorTree::MachineDominatorTree() 4446283Sdfr : MachineFunctionPass(ID) { 4598944Sobrien initializeMachineDominatorTreePass(*PassRegistry::getPassRegistry()); 4646283Sdfr DT = new DominatorTreeBase<MachineBasicBlock>(false); 4798944Sobrien} 4846283Sdfr 4998944SobrienMachineDominatorTree::~MachineDominatorTree() { 5046283Sdfr delete DT; 5198944Sobrien} 5246283Sdfr 5398944Sobrienvoid MachineDominatorTree::releaseMemory() { 5446283Sdfr DT->releaseMemory(); 5598944Sobrien} 5646283Sdfr 5798944Sobrienvoid MachineDominatorTree::print(raw_ostream &OS, const Module*) const { 5846283Sdfr DT->print(OS); 5998944Sobrien} 6046283Sdfr