src/llvm/lib/Analysis/DominanceFrontier.cpp

   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
  13 using namespace llvm;
  14
  15 namespace llvm {
  16 template class DominanceFrontierBase<BasicBlock>;
  17 template class ForwardDominanceFrontierBase<BasicBlock>;
  18 }
  19
  20 char DominanceFrontier::ID = 0;
  21
  22 INITIALIZE_PASS_BEGIN(DominanceFrontier, "domfrontier",
  23                 "Dominance Frontier Construction", true, true)
  24 INITIALIZE_PASS_DEPENDENCY(DominatorTreeWrapperPass)
  25 INITIALIZE_PASS_END(DominanceFrontier, "domfrontier",
  26                 "Dominance Frontier Construction", true, true)
  27
  28 DominanceFrontier::DominanceFrontier()
  29   : FunctionPass(ID),
  30     Base() {
  31   initializeDominanceFrontierPass(*PassRegistry::getPassRegistry());
  32 }
  33
  34 void DominanceFrontier::releaseMemory() {
  35   Base.releaseMemory();
  36 }
  37
  38 bool DominanceFrontier::runOnFunction(Function &) {
  39   releaseMemory();
  40   Base.analyze(getAnalysis<DominatorTreeWrapperPass>().getDomTree());
  41   return false;
  42 }
  43
  44 void DominanceFrontier::getAnalysisUsage(AnalysisUsage &AU) const {
  45   AU.setPreservesAll();
  46   AU.addRequired<DominatorTreeWrapperPass>();
  47 }
  48
  49 void DominanceFrontier::print(raw_ostream &OS, const Module *) const {
  50   Base.print(OS);
  51 }
  52
  53 #if !defined(NDEBUG) || defined(LLVM_ENABLE_DUMP)
  54 void DominanceFrontier::dump() const {
  55   print(dbgs());
  56 }
  57 #endif