1 //===- DominanceFrontier.cpp - Dominance Frontier 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 #include "llvm/Analysis/DominanceFrontier.h"
11 #include "llvm/Analysis/DominanceFrontierImpl.h"
12 #include "llvm/IR/PassManager.h"
17 template class DominanceFrontierBase<BasicBlock>;
18 template class ForwardDominanceFrontierBase<BasicBlock>;
21 char DominanceFrontierWrapperPass::ID = 0;
23 INITIALIZE_PASS_BEGIN(DominanceFrontierWrapperPass, "domfrontier",
24 "Dominance Frontier Construction", true, true)
25 INITIALIZE_PASS_DEPENDENCY(DominatorTreeWrapperPass)
26 INITIALIZE_PASS_END(DominanceFrontierWrapperPass, "domfrontier",
27 "Dominance Frontier Construction", true, true)
29 DominanceFrontierWrapperPass::DominanceFrontierWrapperPass()
30 : FunctionPass(ID), DF() {
31 initializeDominanceFrontierWrapperPassPass(*PassRegistry::getPassRegistry());
34 void DominanceFrontierWrapperPass::releaseMemory() {
38 bool DominanceFrontierWrapperPass::runOnFunction(Function &) {
40 DF.analyze(getAnalysis<DominatorTreeWrapperPass>().getDomTree());
44 void DominanceFrontierWrapperPass::getAnalysisUsage(AnalysisUsage &AU) const {
46 AU.addRequired<DominatorTreeWrapperPass>();
49 void DominanceFrontierWrapperPass::print(raw_ostream &OS, const Module *) const {
53 #if !defined(NDEBUG) || defined(LLVM_ENABLE_DUMP)
54 LLVM_DUMP_METHOD void DominanceFrontierWrapperPass::dump() const {
59 /// Handle invalidation explicitly.
60 bool DominanceFrontier::invalidate(Function &F, const PreservedAnalyses &PA,
61 FunctionAnalysisManager::Invalidator &) {
62 // Check whether the analysis, all analyses on functions, or the function's
63 // CFG have been preserved.
64 auto PAC = PA.getChecker<DominanceFrontierAnalysis>();
65 return !(PAC.preserved() || PAC.preservedSet<AllAnalysesOn<Function>>() ||
66 PAC.preservedSet<CFGAnalyses>());
69 AnalysisKey DominanceFrontierAnalysis::Key;
71 DominanceFrontier DominanceFrontierAnalysis::run(Function &F,
72 FunctionAnalysisManager &AM) {
74 DF.analyze(AM.getResult<DominatorTreeAnalysis>(F));
78 DominanceFrontierPrinterPass::DominanceFrontierPrinterPass(raw_ostream &OS)
82 DominanceFrontierPrinterPass::run(Function &F, FunctionAnalysisManager &AM) {
83 OS << "DominanceFrontier for function: " << F.getName() << "\n";
84 AM.getResult<DominanceFrontierAnalysis>(F).print(OS);
86 return PreservedAnalyses::all();