//
//===----------------------------------------------------------------------===//
-#include "llvm/Support/BranchProbability.h"
#include "llvm/Support/BlockFrequency.h"
#include "llvm/Support/raw_ostream.h"
#include <cassert>
using namespace llvm;
-BlockFrequency &BlockFrequency::operator*=(const BranchProbability &Prob) {
+BlockFrequency &BlockFrequency::operator*=(BranchProbability Prob) {
Frequency = Prob.scale(Frequency);
return *this;
}
-const BlockFrequency
-BlockFrequency::operator*(const BranchProbability &Prob) const {
+BlockFrequency BlockFrequency::operator*(BranchProbability Prob) const {
BlockFrequency Freq(Frequency);
Freq *= Prob;
return Freq;
}
-BlockFrequency &BlockFrequency::operator/=(const BranchProbability &Prob) {
+BlockFrequency &BlockFrequency::operator/=(BranchProbability Prob) {
Frequency = Prob.scaleByInverse(Frequency);
return *this;
}
-BlockFrequency BlockFrequency::operator/(const BranchProbability &Prob) const {
+BlockFrequency BlockFrequency::operator/(BranchProbability Prob) const {
BlockFrequency Freq(Frequency);
Freq /= Prob;
return Freq;
}
-BlockFrequency &BlockFrequency::operator+=(const BlockFrequency &Freq) {
+BlockFrequency &BlockFrequency::operator+=(BlockFrequency Freq) {
uint64_t Before = Freq.Frequency;
Frequency += Freq.Frequency;
return *this;
}
-const BlockFrequency
-BlockFrequency::operator+(const BlockFrequency &Prob) const {
- BlockFrequency Freq(Frequency);
- Freq += Prob;
- return Freq;
+BlockFrequency BlockFrequency::operator+(BlockFrequency Freq) const {
+ BlockFrequency NewFreq(Frequency);
+ NewFreq += Freq;
+ return NewFreq;
+}
+
+BlockFrequency &BlockFrequency::operator-=(BlockFrequency Freq) {
+ // If underflow, set frequency to 0.
+ if (Frequency <= Freq.Frequency)
+ Frequency = 0;
+ else
+ Frequency -= Freq.Frequency;
+ return *this;
+}
+
+BlockFrequency BlockFrequency::operator-(BlockFrequency Freq) const {
+ BlockFrequency NewFreq(Frequency);
+ NewFreq -= Freq;
+ return NewFreq;
}
BlockFrequency &BlockFrequency::operator>>=(const unsigned count) {