1//===- MachineDominanceFrontier.cpp ---------------------------------------===//
2//
3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4// See https://llvm.org/LICENSE.txt for license information.
5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6//
7//===----------------------------------------------------------------------===//
8
9#include "llvm/CodeGen/MachineDominanceFrontier.h"
10#include "llvm/CodeGen/MachineDominators.h"
11#include "llvm/CodeGen/Passes.h"
12#include "llvm/InitializePasses.h"
13#include "llvm/Pass.h"
14#include "llvm/PassRegistry.h"
15
16using namespace llvm;
17
18namespace llvm {
19template class DominanceFrontierBase<MachineBasicBlock, false>;
20template class DominanceFrontierBase<MachineBasicBlock, true>;
21template class ForwardDominanceFrontierBase<MachineBasicBlock>;
22}
23
24
25char MachineDominanceFrontier::ID = 0;
26
27INITIALIZE_PASS_BEGIN(MachineDominanceFrontier, "machine-domfrontier",
28 "Machine Dominance Frontier Construction", true, true)
29INITIALIZE_PASS_DEPENDENCY(MachineDominatorTreeWrapperPass)
30INITIALIZE_PASS_END(MachineDominanceFrontier, "machine-domfrontier",
31 "Machine Dominance Frontier Construction", true, true)
32
33MachineDominanceFrontier::MachineDominanceFrontier() : MachineFunctionPass(ID) {
34 initializeMachineDominanceFrontierPass(Registry&: *PassRegistry::getPassRegistry());
35}
36
37char &llvm::MachineDominanceFrontierID = MachineDominanceFrontier::ID;
38
39bool MachineDominanceFrontier::runOnMachineFunction(MachineFunction &) {
40 releaseMemory();
41 Base.analyze(DT&: getAnalysis<MachineDominatorTreeWrapperPass>().getDomTree());
42 return false;
43}
44
45void MachineDominanceFrontier::releaseMemory() {
46 Base.releaseMemory();
47}
48
49void MachineDominanceFrontier::getAnalysisUsage(AnalysisUsage &AU) const {
50 AU.setPreservesAll();
51 AU.addRequired<MachineDominatorTreeWrapperPass>();
52 MachineFunctionPass::getAnalysisUsage(AU);
53}
54