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
| //===-- 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/Support/Error.h"
#include "llvm/Support/Path.h"
#include "llvm/Support/TargetRegistry.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::get;
using ::testing::Pointwise;
using ::testing::Property;
namespace llvm {
namespace exegesis {
bool operator==(const BenchmarkMeasure &A, const BenchmarkMeasure &B) {
return std::tie(A.Key, A.PerInstructionValue, A.PerSnippetValue) ==
std::tie(B.Key, B.PerInstructionValue, B.PerSnippetValue);
}
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;
}
namespace {
TEST(BenchmarkResultTest, WriteToAndReadFromDisk) {
LLVMInitializeX86TargetInfo();
LLVMInitializeX86Target();
LLVMInitializeX86TargetMC();
// Read benchmarks.
const LLVMState State("x86_64-unknown-linux", "haswell");
ExitOnError ExitOnErr;
InstructionBenchmark ToDisk;
ToDisk.Key.Instructions.push_back(MCInstBuilder(X86::XOR32rr)
.addReg(X86::AL)
.addReg(X86::AH)
.addImm(123)
.addFPImm(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 = InstructionBenchmark::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";
ExitOnErr(ToDisk.writeYaml(State, Filename));
{
// One-element version.
const auto FromDisk =
ExitOnErr(InstructionBenchmark::readYaml(State, Filename));
EXPECT_THAT(FromDisk.Key.Instructions,
Pointwise(EqMCInst(), ToDisk.Key.Instructions));
EXPECT_EQ(FromDisk.Key.Config, ToDisk.Key.Config);
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(InstructionBenchmark::readYamls(State, Filename));
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_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
|