blob: 839cf93712472df359670ad07ae5dfc081f90891 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
|
//===-------- BlockFrequency.h - Block Frequency Wrapper --------*- C++ -*-===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// This file implements Block Frequency class.
//
//===----------------------------------------------------------------------===//
#ifndef LLVM_SUPPORT_BLOCKFREQUENCY_H
#define LLVM_SUPPORT_BLOCKFREQUENCY_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 {
uint64_t Frequency;
static const int64_t ENTRY_FREQ = 1024;
public:
BlockFrequency(uint64_t Freq = 0) : Frequency(Freq) { }
static uint64_t getEntryFrequency() { return ENTRY_FREQ; }
uint64_t getFrequency() const { return Frequency; }
BlockFrequency &operator*=(const BranchProbability &Prob);
const BlockFrequency operator*(const BranchProbability &Prob) const;
BlockFrequency &operator+=(const BlockFrequency &Freq);
const BlockFrequency operator+(const BlockFrequency &Freq) const;
bool operator<(const BlockFrequency &RHS) const {
return Frequency < RHS.Frequency;
}
bool operator<=(const BlockFrequency &RHS) const {
return Frequency <= RHS.Frequency;
}
bool operator>(const BlockFrequency &RHS) const {
return Frequency > RHS.Frequency;
}
bool operator>=(const BlockFrequency &RHS) const {
return Frequency >= RHS.Frequency;
}
void print(raw_ostream &OS) const;
};
raw_ostream &operator<<(raw_ostream &OS, const BlockFrequency &Freq);
}
#endif
|
