BlockFrequencyInfo::BlockFrequencyInfo() : FunctionPass(ID) {
initializeBlockFrequencyInfoPass(*PassRegistry::getPassRegistry());
- BFI = new BlockFrequencyImpl<BasicBlock, Function, BranchProbabilityInfo>();
}
-BlockFrequencyInfo::~BlockFrequencyInfo() {
- delete BFI;
-}
+BlockFrequencyInfo::~BlockFrequencyInfo() {}
void BlockFrequencyInfo::getAnalysisUsage(AnalysisUsage &AU) const {
AU.addRequired<BranchProbabilityInfo>();
bool BlockFrequencyInfo::runOnFunction(Function &F) {
BranchProbabilityInfo &BPI = getAnalysis<BranchProbabilityInfo>();
+ if (!BFI)
+ BFI.reset(new ImplType);
BFI->doFunction(&F, &BPI);
#ifndef NDEBUG
if (ViewBlockFreqPropagationDAG != GVDT_None)
return false;
}
+void BlockFrequencyInfo::releaseMemory() { BFI.reset(); }
+
void BlockFrequencyInfo::print(raw_ostream &O, const Module *) const {
if (BFI) BFI->print(O);
}
BlockFrequency BlockFrequencyInfo::getBlockFreq(const BasicBlock *BB) const {
- return BFI->getBlockFreq(BB);
+ return BFI ? BFI->getBlockFreq(BB) : 0;
}
/// Pop up a ghostview window with the current block frequency propagation
}
const Function *BlockFrequencyInfo::getFunction() const {
- return BFI->Fn;
+ return BFI ? BFI->Fn : nullptr;
}
raw_ostream &BlockFrequencyInfo::
printBlockFreq(raw_ostream &OS, const BlockFrequency Freq) const {
- return BFI->printBlockFreq(OS, Freq);
+ return BFI ? BFI->printBlockFreq(OS, Freq) : OS;
}
raw_ostream &
BlockFrequencyInfo::printBlockFreq(raw_ostream &OS,
const BasicBlock *BB) const {
- return BFI->printBlockFreq(OS, BB);
+ return BFI ? BFI->printBlockFreq(OS, BB) : OS;
}
uint64_t BlockFrequencyInfo::getEntryFreq() const {
- return BFI->getEntryFreq();
+ return BFI ? BFI->getEntryFreq() : 0;
}