/// BlockFrequencyInfo pass uses BlockFrequencyImpl implementation to estimate
/// IR basic block frequencies.
class BlockFrequencyInfo : public FunctionPass {
-
- BlockFrequencyImpl<BasicBlock, Function, BranchProbabilityInfo> *BFI;
+ typedef BlockFrequencyImpl<BasicBlock, Function, BranchProbabilityInfo>
+ ImplType;
+ std::unique_ptr<ImplType> BFI;
public:
static char ID;
void getAnalysisUsage(AnalysisUsage &AU) const override;
bool runOnFunction(Function &F) override;
+ void releaseMemory() override;
void print(raw_ostream &O, const Module *M) const override;
const Function *getFunction() const;
void view() const;
/// MachineBlockFrequencyInfo pass uses BlockFrequencyImpl implementation to estimate
/// machine basic block frequencies.
class MachineBlockFrequencyInfo : public MachineFunctionPass {
-
- BlockFrequencyImpl<MachineBasicBlock, MachineFunction,
- MachineBranchProbabilityInfo> *MBFI;
+ typedef BlockFrequencyImpl<MachineBasicBlock, MachineFunction,
+ MachineBranchProbabilityInfo> ImplType;
+ std::unique_ptr<ImplType> MBFI;
public:
static char ID;
bool runOnMachineFunction(MachineFunction &F) override;
+ void releaseMemory() override;
+
/// getblockFreq - Return block frequency. Return 0 if we don't have the
/// information. Please note that initial frequency is equal to 1024. It means
/// that we should not rely on the value itself, but only on the comparison to
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;
}
MachineBlockFrequencyInfo::
MachineBlockFrequencyInfo() :MachineFunctionPass(ID) {
initializeMachineBlockFrequencyInfoPass(*PassRegistry::getPassRegistry());
- MBFI = new BlockFrequencyImpl<MachineBasicBlock, MachineFunction,
- MachineBranchProbabilityInfo>();
}
-MachineBlockFrequencyInfo::~MachineBlockFrequencyInfo() {
- delete MBFI;
-}
+MachineBlockFrequencyInfo::~MachineBlockFrequencyInfo() {}
void MachineBlockFrequencyInfo::getAnalysisUsage(AnalysisUsage &AU) const {
AU.addRequired<MachineBranchProbabilityInfo>();
bool MachineBlockFrequencyInfo::runOnMachineFunction(MachineFunction &F) {
MachineBranchProbabilityInfo &MBPI =
getAnalysis<MachineBranchProbabilityInfo>();
+ if (!MBFI)
+ MBFI.reset(new ImplType);
MBFI->doFunction(&F, &MBPI);
#ifndef NDEBUG
if (ViewMachineBlockFreqPropagationDAG != GVDT_None) {
return false;
}
+void MachineBlockFrequencyInfo::releaseMemory() { MBFI.reset(); }
+
/// Pop up a ghostview window with the current block frequency propagation
/// rendered using dot.
void MachineBlockFrequencyInfo::view() const {
BlockFrequency MachineBlockFrequencyInfo::
getBlockFreq(const MachineBasicBlock *MBB) const {
- return MBFI->getBlockFreq(MBB);
+ return MBFI ? MBFI->getBlockFreq(MBB) : 0;
}
const MachineFunction *MachineBlockFrequencyInfo::getFunction() const {
- return MBFI->Fn;
+ return MBFI ? MBFI->Fn : nullptr;
}
raw_ostream &
MachineBlockFrequencyInfo::printBlockFreq(raw_ostream &OS,
const BlockFrequency Freq) const {
- return MBFI->printBlockFreq(OS, Freq);
+ return MBFI ? MBFI->printBlockFreq(OS, Freq) : OS;
}
raw_ostream &
MachineBlockFrequencyInfo::printBlockFreq(raw_ostream &OS,
const MachineBasicBlock *MBB) const {
- return MBFI->printBlockFreq(OS, MBB);
+ return MBFI ? MBFI->printBlockFreq(OS, MBB) : OS;
}
uint64_t MachineBlockFrequencyInfo::getEntryFreq() const {
- return MBFI->getEntryFreq();
+ return MBFI ? MBFI->getEntryFreq() : 0;
}