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//===- MachineDominanceFrontier.cpp ---------------------------------------===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
#include "llvm/CodeGen/MachineDominanceFrontier.h"
#include "llvm/Analysis/DominanceFrontierImpl.h"
#include "llvm/CodeGen/MachineDominators.h"
#include "llvm/CodeGen/Passes.h"
using namespace llvm;
namespace llvm {
template class DominanceFrontierBase<MachineBasicBlock>;
template class ForwardDominanceFrontierBase<MachineBasicBlock>;
}
char MachineDominanceFrontier::ID = 0;
INITIALIZE_PASS_BEGIN(MachineDominanceFrontier, "machine-domfrontier",
"Machine Dominance Frontier Construction", true, true)
INITIALIZE_PASS_DEPENDENCY(MachineDominatorTree)
INITIALIZE_PASS_END(MachineDominanceFrontier, "machine-domfrontier",
"Machine Dominance Frontier Construction", true, true)
MachineDominanceFrontier::MachineDominanceFrontier()
: MachineFunctionPass(ID),
Base() {
initializeMachineDominanceFrontierPass(*PassRegistry::getPassRegistry());
}
char &llvm::MachineDominanceFrontierID = MachineDominanceFrontier::ID;
bool MachineDominanceFrontier::runOnMachineFunction(MachineFunction &) {
releaseMemory();
Base.analyze(getAnalysis<MachineDominatorTree>().getBase());
return false;
}
void MachineDominanceFrontier::releaseMemory() {
Base.releaseMemory();
}
void MachineDominanceFrontier::getAnalysisUsage(AnalysisUsage &AU) const {
AU.setPreservesAll();
AU.addRequired<MachineDominatorTree>();
MachineFunctionPass::getAnalysisUsage(AU);
}
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