1//===- MachineDominanceFrontier.cpp ---------------------------------------===// 2// 3// The LLVM Compiler Infrastructure 4// 5// This file is distributed under the University of Illinois Open Source 6// License. See LICENSE.TXT for details. 7// 8//===----------------------------------------------------------------------===// 9 10#include "llvm/CodeGen/MachineDominanceFrontier.h" 11#include "llvm/Analysis/DominanceFrontierImpl.h" 12#include "llvm/CodeGen/MachineDominators.h" 13#include "llvm/CodeGen/Passes.h" 14 15 16using namespace llvm; 17 18namespace llvm { 19template class DominanceFrontierBase<MachineBasicBlock>; 20template class ForwardDominanceFrontierBase<MachineBasicBlock>; 21} 22 23 24char MachineDominanceFrontier::ID = 0; 25 26INITIALIZE_PASS_BEGIN(MachineDominanceFrontier, "machine-domfrontier", 27 "Machine Dominance Frontier Construction", true, true) 28INITIALIZE_PASS_DEPENDENCY(MachineDominatorTree) 29INITIALIZE_PASS_END(MachineDominanceFrontier, "machine-domfrontier", 30 "Machine Dominance Frontier Construction", true, true) 31 32MachineDominanceFrontier::MachineDominanceFrontier() 33 : MachineFunctionPass(ID), 34 Base() { 35 initializeMachineDominanceFrontierPass(*PassRegistry::getPassRegistry()); 36} 37 38char &llvm::MachineDominanceFrontierID = MachineDominanceFrontier::ID; 39 40bool MachineDominanceFrontier::runOnMachineFunction(MachineFunction &) { 41 releaseMemory(); 42 Base.analyze(getAnalysis<MachineDominatorTree>().getBase()); 43 return false; 44} 45 46void MachineDominanceFrontier::releaseMemory() { 47 Base.releaseMemory(); 48} 49 50void MachineDominanceFrontier::getAnalysisUsage(AnalysisUsage &AU) const { 51 AU.setPreservesAll(); 52 AU.addRequired<MachineDominatorTree>(); 53 MachineFunctionPass::getAnalysisUsage(AU); 54} 55