-//====----- MachineBlockFrequencyInfo.h - MachineBlock Frequency Analysis ----====//
+//===- MachineBlockFrequencyInfo.h - MBB Frequency Analysis -*- C++ -*-----===//
//
// The LLVM Compiler Infrastructure
//
class MachineBasicBlock;
class MachineBranchProbabilityInfo;
-template<class BlockT, class FunctionT, class BranchProbInfoT>
-class BlockFrequencyImpl;
+template <class BlockT> class BlockFrequencyInfoImpl;
-/// MachineBlockFrequencyInfo pass uses BlockFrequencyImpl implementation to estimate
-/// machine basic block frequencies.
+/// MachineBlockFrequencyInfo pass uses BlockFrequencyInfoImpl implementation
+/// to estimate machine basic block frequencies.
class MachineBlockFrequencyInfo : public MachineFunctionPass {
-
- BlockFrequencyImpl<MachineBasicBlock, MachineFunction,
- MachineBranchProbabilityInfo> *MBFI;
+ typedef BlockFrequencyInfoImpl<MachineBasicBlock> ImplType;
+ std::unique_ptr<ImplType> MBFI;
public:
static char ID;
~MachineBlockFrequencyInfo();
- void getAnalysisUsage(AnalysisUsage &AU) const;
+ void getAnalysisUsage(AnalysisUsage &AU) const override;
+
+ bool runOnMachineFunction(MachineFunction &F) override;
- bool runOnMachineFunction(MachineFunction &F);
+ 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
/// the other block frequencies. We do this to avoid using of floating points.
///
- BlockFrequency getBlockFreq(MachineBasicBlock *MBB) const;
+ BlockFrequency getBlockFreq(const MachineBasicBlock *MBB) const;
+
+ const MachineFunction *getFunction() const;
+ void view() const;
+
+ // Print the block frequency Freq to OS using the current functions entry
+ // frequency to convert freq into a relative decimal form.
+ raw_ostream &printBlockFreq(raw_ostream &OS, const BlockFrequency Freq) const;
+
+ // Convenience method that attempts to look up the frequency associated with
+ // BB and print it to OS.
+ raw_ostream &printBlockFreq(raw_ostream &OS,
+ const MachineBasicBlock *MBB) const;
+
+ uint64_t getEntryFreq() const;
+
};
}