1 //===- DominanceFrontier.cpp - Dominance Frontier Calculation -------------===//
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/Analysis/DominanceFrontier.h"
11 #include "llvm/Analysis/DominanceFrontierImpl.h"
12 #include "llvm/IR/PassManager.h"
13
14 using namespace llvm;
15
16 namespace llvm {
17 template class DominanceFrontierBase<BasicBlock>;
18 template class ForwardDominanceFrontierBase<BasicBlock>;
19 }
20
21 char DominanceFrontierWrapperPass::ID = 0;
22
23 INITIALIZE_PASS_BEGIN(DominanceFrontierWrapperPass, "domfrontier",
24 "Dominance Frontier Construction", true, true)
INITIALIZE_PASS_DEPENDENCY(DominatorTreeWrapperPass)25 INITIALIZE_PASS_DEPENDENCY(DominatorTreeWrapperPass)
26 INITIALIZE_PASS_END(DominanceFrontierWrapperPass, "domfrontier",
27 "Dominance Frontier Construction", true, true)
28
29 DominanceFrontierWrapperPass::DominanceFrontierWrapperPass()
30 : FunctionPass(ID), DF() {
31 initializeDominanceFrontierWrapperPassPass(*PassRegistry::getPassRegistry());
32 }
33
releaseMemory()34 void DominanceFrontierWrapperPass::releaseMemory() {
35 DF.releaseMemory();
36 }
37
runOnFunction(Function &)38 bool DominanceFrontierWrapperPass::runOnFunction(Function &) {
39 releaseMemory();
40 DF.analyze(getAnalysis<DominatorTreeWrapperPass>().getDomTree());
41 return false;
42 }
43
getAnalysisUsage(AnalysisUsage & AU) const44 void DominanceFrontierWrapperPass::getAnalysisUsage(AnalysisUsage &AU) const {
45 AU.setPreservesAll();
46 AU.addRequired<DominatorTreeWrapperPass>();
47 }
48
print(raw_ostream & OS,const Module *) const49 void DominanceFrontierWrapperPass::print(raw_ostream &OS, const Module *) const {
50 DF.print(OS);
51 }
52
53 #if !defined(NDEBUG) || defined(LLVM_ENABLE_DUMP)
dump() const54 LLVM_DUMP_METHOD void DominanceFrontierWrapperPass::dump() const {
55 print(dbgs());
56 }
57 #endif
58
59 char DominanceFrontierAnalysis::PassID;
60
run(Function & F,FunctionAnalysisManager & AM)61 DominanceFrontier DominanceFrontierAnalysis::run(Function &F,
62 FunctionAnalysisManager &AM) {
63 DominanceFrontier DF;
64 DF.analyze(AM.getResult<DominatorTreeAnalysis>(F));
65 return DF;
66 }
67
DominanceFrontierPrinterPass(raw_ostream & OS)68 DominanceFrontierPrinterPass::DominanceFrontierPrinterPass(raw_ostream &OS)
69 : OS(OS) {}
70
71 PreservedAnalyses
run(Function & F,FunctionAnalysisManager & AM)72 DominanceFrontierPrinterPass::run(Function &F, FunctionAnalysisManager &AM) {
73 OS << "DominanceFrontier for function: " << F.getName() << "\n";
74 AM.getResult<DominanceFrontierAnalysis>(F).print(OS);
75
76 return PreservedAnalyses::all();
77 }
78