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
|
//===-- BenchmarkResultTest.cpp ---------------------------------*- C++ -*-===//
//
// 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
//
//===----------------------------------------------------------------------===//
#include "BenchmarkResult.h"
#include "X86InstrInfo.h"
#include "llvm/ADT/SmallString.h"
#include "llvm/MC/TargetRegistry.h"
#include "llvm/Support/Error.h"
#include "llvm/Support/FileSystem.h"
#include "llvm/Support/Path.h"
#include "llvm/Support/TargetSelect.h"
#include "llvm/Support/YAMLTraits.h"
#include "llvm/Support/raw_ostream.h"
#include "gmock/gmock.h"
#include "gtest/gtest.h"
using ::testing::AllOf;
using ::testing::Eq;
using ::testing::Field;
using ::testing::Pointwise;
namespace llvm {
namespace exegesis {
void InitializeX86ExegesisTarget();
static std::string Dump(const MCInst &McInst) {
std::string Buffer;
raw_string_ostream OS(Buffer);
McInst.print(OS);
return Buffer;
}
MATCHER(EqMCInst, "") {
const std::string Lhs = Dump(get<0>(arg));
const std::string Rhs = Dump(get<1>(arg));
if (Lhs != Rhs) {
*result_listener << Lhs << " <=> " << Rhs;
return false;
}
return true;
}
MATCHER(EqRegValue, "") {
const RegisterValue Lhs = get<0>(arg);
const RegisterValue Rhs = get<1>(arg);
if (Lhs.Register != Rhs.Register || Lhs.Value != Rhs.Value)
return false;
return true;
}
namespace {
TEST(BenchmarkResultTest, WriteToAndReadFromDisk) {
LLVMInitializeX86TargetInfo();
LLVMInitializeX86Target();
LLVMInitializeX86TargetMC();
InitializeX86ExegesisTarget();
// Read benchmarks.
const LLVMState State =
cantFail(LLVMState::Create("x86_64-unknown-linux", "haswell"));
ExitOnError ExitOnErr;
Benchmark ToDisk;
ToDisk.Key.Instructions.push_back(MCInstBuilder(X86::XOR32rr)
.addReg(X86::AL)
.addReg(X86::AH)
.addImm(123)
.addDFPImm(bit_cast<uint64_t>(0.5)));
ToDisk.Key.Config = "config";
ToDisk.Key.RegisterInitialValues = {
RegisterValue{X86::AL, APInt(8, "-1", 10)},
RegisterValue{X86::AH, APInt(8, "123", 10)}};
ToDisk.Mode = Benchmark::Latency;
ToDisk.CpuName = "cpu_name";
ToDisk.LLVMTriple = "llvm_triple";
ToDisk.NumRepetitions = 1;
ToDisk.Measurements.push_back(BenchmarkMeasure{"a", 1, 1});
ToDisk.Measurements.push_back(BenchmarkMeasure{"b", 2, 2});
ToDisk.Error = "error";
ToDisk.Info = "info";
SmallString<64> Filename;
std::error_code EC;
EC = sys::fs::createUniqueDirectory("BenchmarkResultTestDir", Filename);
ASSERT_FALSE(EC);
sys::path::append(Filename, "data.yaml");
errs() << Filename << "-------\n";
{
int ResultFD = 0;
// Create output file or open existing file and truncate it, once.
ExitOnErr(errorCodeToError(openFileForWrite(Filename, ResultFD,
sys::fs::CD_CreateAlways,
sys::fs::OF_TextWithCRLF)));
raw_fd_ostream FileOstr(ResultFD, true /*shouldClose*/);
ExitOnErr(ToDisk.writeYamlTo(State, FileOstr));
}
const std::unique_ptr<MemoryBuffer> Buffer =
std::move(*MemoryBuffer::getFile(Filename));
{
// Read Triples/Cpu only.
const auto TriplesAndCpus =
ExitOnErr(Benchmark::readTriplesAndCpusFromYamls(*Buffer));
ASSERT_THAT(TriplesAndCpus,
testing::ElementsAre(
AllOf(Field(&Benchmark::TripleAndCpu::LLVMTriple,
Eq("llvm_triple")),
Field(&Benchmark::TripleAndCpu::CpuName,
Eq("cpu_name")))));
}
{
// One-element version.
const auto FromDisk =
ExitOnErr(Benchmark::readYaml(State, *Buffer));
EXPECT_THAT(FromDisk.Key.Instructions,
Pointwise(EqMCInst(), ToDisk.Key.Instructions));
EXPECT_EQ(FromDisk.Key.Config, ToDisk.Key.Config);
EXPECT_THAT(FromDisk.Key.RegisterInitialValues,
Pointwise(EqRegValue(), ToDisk.Key.RegisterInitialValues));
EXPECT_EQ(FromDisk.Mode, ToDisk.Mode);
EXPECT_EQ(FromDisk.CpuName, ToDisk.CpuName);
EXPECT_EQ(FromDisk.LLVMTriple, ToDisk.LLVMTriple);
EXPECT_EQ(FromDisk.NumRepetitions, ToDisk.NumRepetitions);
EXPECT_THAT(FromDisk.Measurements, ToDisk.Measurements);
EXPECT_THAT(FromDisk.Error, ToDisk.Error);
EXPECT_EQ(FromDisk.Info, ToDisk.Info);
}
{
// Vector version.
const auto FromDiskVector =
ExitOnErr(Benchmark::readYamls(State, *Buffer));
ASSERT_EQ(FromDiskVector.size(), size_t{1});
const auto &FromDisk = FromDiskVector[0];
EXPECT_THAT(FromDisk.Key.Instructions,
Pointwise(EqMCInst(), ToDisk.Key.Instructions));
EXPECT_EQ(FromDisk.Key.Config, ToDisk.Key.Config);
EXPECT_THAT(FromDisk.Key.RegisterInitialValues,
Pointwise(EqRegValue(), ToDisk.Key.RegisterInitialValues));
EXPECT_EQ(FromDisk.Mode, ToDisk.Mode);
EXPECT_EQ(FromDisk.CpuName, ToDisk.CpuName);
EXPECT_EQ(FromDisk.LLVMTriple, ToDisk.LLVMTriple);
EXPECT_EQ(FromDisk.NumRepetitions, ToDisk.NumRepetitions);
EXPECT_THAT(FromDisk.Measurements, ToDisk.Measurements);
EXPECT_THAT(FromDisk.Error, ToDisk.Error);
EXPECT_EQ(FromDisk.Info, ToDisk.Info);
}
}
TEST(BenchmarkResultTest, PerInstructionStats) {
PerInstructionStats Stats;
Stats.push(BenchmarkMeasure{"a", 0.5, 0.0});
Stats.push(BenchmarkMeasure{"a", 1.5, 0.0});
Stats.push(BenchmarkMeasure{"a", -1.0, 0.0});
Stats.push(BenchmarkMeasure{"a", 0.0, 0.0});
EXPECT_EQ(Stats.min(), -1.0);
EXPECT_EQ(Stats.max(), 1.5);
EXPECT_EQ(Stats.avg(), 0.25); // (0.5+1.5-1.0+0.0) / 4
}
} // namespace
} // namespace exegesis
} // namespace llvm
|
