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//===-- 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 "MipsInstrInfo.h"
#include "TestBase.h"
#include "llvm/ADT/SmallString.h"
#include "llvm/MC/TargetRegistry.h"
#include "llvm/Support/Error.h"
#include "llvm/Support/Path.h"
#include "llvm/Support/TargetSelect.h"
#include "llvm/Support/YAMLTraits.h"
#include "llvm/Support/raw_ostream.h"
#include "llvm/Testing/Support/SupportHelpers.h"
#include "gmock/gmock.h"
#include "gtest/gtest.h"
using ::testing::AllOf;
using ::testing::Eq;
using ::testing::get;
using ::testing::Pointwise;
using ::testing::Property;
using llvm::unittest::TempDir;
namespace llvm {
namespace exegesis {
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 {
class MipsBenchmarkResultTest : public MipsTestBase {};
TEST_F(MipsBenchmarkResultTest, WriteToAndReadFromDisk) {
ExitOnError ExitOnErr;
InstructionBenchmark ToDisk;
ToDisk.Key.Instructions.push_back(MCInstBuilder(Mips::XOR)
.addReg(Mips::T0)
.addReg(Mips::T1)
.addReg(Mips::T2));
ToDisk.Key.Config = "config";
ToDisk.Key.RegisterInitialValues = {
RegisterValue{Mips::T1, APInt(8, "123", 10)},
RegisterValue{Mips::T2, APInt(8, "456", 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";
TempDir TestDirectory("BenchmarkResultTestDir", /*Unique*/ true);
SmallString<64> Filename(TestDirectory.path());
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_F(MipsBenchmarkResultTest, 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
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