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
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
|
//===- MachineSizeOpts.cpp - code size optimization related code ----------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
//
// This file contains some shared machine IR code size optimization related
// code.
//
//===----------------------------------------------------------------------===//
#include "llvm/CodeGen/MachineSizeOpts.h"
#include "llvm/CodeGen/MBFIWrapper.h"
#include "llvm/Analysis/ProfileSummaryInfo.h"
#include "llvm/CodeGen/MachineBlockFrequencyInfo.h"
using namespace llvm;
extern cl::opt<bool> EnablePGSO;
extern cl::opt<bool> PGSOLargeWorkingSetSizeOnly;
extern cl::opt<bool> ForcePGSO;
extern cl::opt<int> PgsoCutoffInstrProf;
extern cl::opt<int> PgsoCutoffSampleProf;
namespace {
namespace machine_size_opts_detail {
/// Like ProfileSummaryInfo::isColdBlock but for MachineBasicBlock.
bool isColdBlock(const MachineBasicBlock *MBB,
ProfileSummaryInfo *PSI,
const MachineBlockFrequencyInfo *MBFI) {
auto Count = MBFI->getBlockProfileCount(MBB);
return Count && PSI->isColdCount(*Count);
}
bool isColdBlock(BlockFrequency BlockFreq,
ProfileSummaryInfo *PSI,
const MachineBlockFrequencyInfo *MBFI) {
auto Count = MBFI->getProfileCountFromFreq(BlockFreq.getFrequency());
return Count && PSI->isColdCount(*Count);
}
/// Like ProfileSummaryInfo::isHotBlockNthPercentile but for MachineBasicBlock.
static bool isHotBlockNthPercentile(int PercentileCutoff,
const MachineBasicBlock *MBB,
ProfileSummaryInfo *PSI,
const MachineBlockFrequencyInfo *MBFI) {
auto Count = MBFI->getBlockProfileCount(MBB);
return Count && PSI->isHotCountNthPercentile(PercentileCutoff, *Count);
}
static bool isHotBlockNthPercentile(int PercentileCutoff,
BlockFrequency BlockFreq,
ProfileSummaryInfo *PSI,
const MachineBlockFrequencyInfo *MBFI) {
auto Count = MBFI->getProfileCountFromFreq(BlockFreq.getFrequency());
return Count && PSI->isHotCountNthPercentile(PercentileCutoff, *Count);
}
static bool isColdBlockNthPercentile(int PercentileCutoff,
const MachineBasicBlock *MBB,
ProfileSummaryInfo *PSI,
const MachineBlockFrequencyInfo *MBFI) {
auto Count = MBFI->getBlockProfileCount(MBB);
return Count && PSI->isColdCountNthPercentile(PercentileCutoff, *Count);
}
static bool isColdBlockNthPercentile(int PercentileCutoff,
BlockFrequency BlockFreq,
ProfileSummaryInfo *PSI,
const MachineBlockFrequencyInfo *MBFI) {
auto Count = MBFI->getProfileCountFromFreq(BlockFreq.getFrequency());
return Count && PSI->isColdCountNthPercentile(PercentileCutoff, *Count);
}
/// Like ProfileSummaryInfo::isFunctionColdInCallGraph but for
/// MachineFunction.
bool isFunctionColdInCallGraph(
const MachineFunction *MF,
ProfileSummaryInfo *PSI,
const MachineBlockFrequencyInfo &MBFI) {
if (auto FunctionCount = MF->getFunction().getEntryCount())
if (!PSI->isColdCount(FunctionCount->getCount()))
return false;
for (const auto &MBB : *MF)
if (!isColdBlock(&MBB, PSI, &MBFI))
return false;
return true;
}
/// Like ProfileSummaryInfo::isFunctionHotInCallGraphNthPercentile but for
/// MachineFunction.
bool isFunctionHotInCallGraphNthPercentile(
int PercentileCutoff,
const MachineFunction *MF,
ProfileSummaryInfo *PSI,
const MachineBlockFrequencyInfo &MBFI) {
if (auto FunctionCount = MF->getFunction().getEntryCount())
if (PSI->isHotCountNthPercentile(PercentileCutoff,
FunctionCount->getCount()))
return true;
for (const auto &MBB : *MF)
if (isHotBlockNthPercentile(PercentileCutoff, &MBB, PSI, &MBFI))
return true;
return false;
}
bool isFunctionColdInCallGraphNthPercentile(
int PercentileCutoff, const MachineFunction *MF, ProfileSummaryInfo *PSI,
const MachineBlockFrequencyInfo &MBFI) {
if (auto FunctionCount = MF->getFunction().getEntryCount())
if (!PSI->isColdCountNthPercentile(PercentileCutoff,
FunctionCount->getCount()))
return false;
for (const auto &MBB : *MF)
if (!isColdBlockNthPercentile(PercentileCutoff, &MBB, PSI, &MBFI))
return false;
return true;
}
} // namespace machine_size_opts_detail
struct MachineBasicBlockBFIAdapter {
static bool isFunctionColdInCallGraph(const MachineFunction *MF,
ProfileSummaryInfo *PSI,
const MachineBlockFrequencyInfo &MBFI) {
return machine_size_opts_detail::isFunctionColdInCallGraph(MF, PSI, MBFI);
}
static bool isFunctionHotInCallGraphNthPercentile(
int CutOff,
const MachineFunction *MF,
ProfileSummaryInfo *PSI,
const MachineBlockFrequencyInfo &MBFI) {
return machine_size_opts_detail::isFunctionHotInCallGraphNthPercentile(
CutOff, MF, PSI, MBFI);
}
static bool isFunctionColdInCallGraphNthPercentile(
int CutOff, const MachineFunction *MF, ProfileSummaryInfo *PSI,
const MachineBlockFrequencyInfo &MBFI) {
return machine_size_opts_detail::isFunctionColdInCallGraphNthPercentile(
CutOff, MF, PSI, MBFI);
}
static bool isColdBlock(const MachineBasicBlock *MBB,
ProfileSummaryInfo *PSI,
const MachineBlockFrequencyInfo *MBFI) {
return machine_size_opts_detail::isColdBlock(MBB, PSI, MBFI);
}
static bool isColdBlock(BlockFrequency BlockFreq,
ProfileSummaryInfo *PSI,
const MachineBlockFrequencyInfo *MBFI) {
return machine_size_opts_detail::isColdBlock(BlockFreq, PSI, MBFI);
}
static bool isHotBlockNthPercentile(int CutOff,
const MachineBasicBlock *MBB,
ProfileSummaryInfo *PSI,
const MachineBlockFrequencyInfo *MBFI) {
return machine_size_opts_detail::isHotBlockNthPercentile(
CutOff, MBB, PSI, MBFI);
}
static bool isHotBlockNthPercentile(int CutOff,
BlockFrequency BlockFreq,
ProfileSummaryInfo *PSI,
const MachineBlockFrequencyInfo *MBFI) {
return machine_size_opts_detail::isHotBlockNthPercentile(
CutOff, BlockFreq, PSI, MBFI);
}
static bool isColdBlockNthPercentile(int CutOff, const MachineBasicBlock *MBB,
ProfileSummaryInfo *PSI,
const MachineBlockFrequencyInfo *MBFI) {
return machine_size_opts_detail::isColdBlockNthPercentile(CutOff, MBB, PSI,
MBFI);
}
static bool isColdBlockNthPercentile(int CutOff, BlockFrequency BlockFreq,
ProfileSummaryInfo *PSI,
const MachineBlockFrequencyInfo *MBFI) {
return machine_size_opts_detail::isColdBlockNthPercentile(CutOff, BlockFreq,
PSI, MBFI);
}
};
} // end anonymous namespace
bool llvm::shouldOptimizeForSize(const MachineFunction *MF,
ProfileSummaryInfo *PSI,
const MachineBlockFrequencyInfo *MBFI,
PGSOQueryType QueryType) {
return shouldFuncOptimizeForSizeImpl<MachineBasicBlockBFIAdapter>(
MF, PSI, MBFI, QueryType);
}
bool llvm::shouldOptimizeForSize(const MachineBasicBlock *MBB,
ProfileSummaryInfo *PSI,
const MachineBlockFrequencyInfo *MBFI,
PGSOQueryType QueryType) {
assert(MBB);
return shouldOptimizeForSizeImpl<MachineBasicBlockBFIAdapter>(
MBB, PSI, MBFI, QueryType);
}
bool llvm::shouldOptimizeForSize(const MachineBasicBlock *MBB,
ProfileSummaryInfo *PSI,
MBFIWrapper *MBFIW,
PGSOQueryType QueryType) {
assert(MBB);
if (!PSI || !MBFIW)
return false;
BlockFrequency BlockFreq = MBFIW->getBlockFreq(MBB);
return shouldOptimizeForSizeImpl<MachineBasicBlockBFIAdapter>(
BlockFreq, PSI, &MBFIW->getMBFI(), QueryType);
}
|
