#ifndef LLVM_SUPPORT_BLOCKFREQUENCY_H
#define LLVM_SUPPORT_BLOCKFREQUENCY_H
+#include "llvm/Support/BranchProbability.h"
#include "llvm/Support/DataTypes.h"
namespace llvm {
class raw_ostream;
-class BranchProbability;
// This class represents Block Frequency as a 64-bit value.
class BlockFrequency {
/// \brief Multiplies with a branch probability. The computation will never
/// overflow.
BlockFrequency &operator*=(BranchProbability Prob);
- const BlockFrequency operator*(BranchProbability Prob) const;
+ BlockFrequency operator*(BranchProbability Prob) const;
/// \brief Divide by a non-zero branch probability using saturating
/// arithmetic.
BlockFrequency operator/(BranchProbability Prob) const;
/// \brief Adds another block frequency using saturating arithmetic.
- BlockFrequency &operator+=(const BlockFrequency &Freq);
- const BlockFrequency operator+(const BlockFrequency &Freq) const;
+ BlockFrequency &operator+=(BlockFrequency Freq);
+ BlockFrequency operator+(BlockFrequency Freq) const;
+
+ /// \brief Subtracts another block frequency using saturating arithmetic.
+ BlockFrequency &operator-=(BlockFrequency Freq);
+ BlockFrequency operator-(BlockFrequency Freq) const;
/// \brief Shift block frequency to the right by count digits saturating to 1.
BlockFrequency &operator>>=(const unsigned count);
- bool operator<(const BlockFrequency &RHS) const {
+ bool operator<(BlockFrequency RHS) const {
return Frequency < RHS.Frequency;
}
- bool operator<=(const BlockFrequency &RHS) const {
+ bool operator<=(BlockFrequency RHS) const {
return Frequency <= RHS.Frequency;
}
- bool operator>(const BlockFrequency &RHS) const {
+ bool operator>(BlockFrequency RHS) const {
return Frequency > RHS.Frequency;
}
- bool operator>=(const BlockFrequency &RHS) const {
+ bool operator>=(BlockFrequency RHS) const {
return Frequency >= RHS.Frequency;
}
};