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//===- unittest/ProfileData/SampleProfTest.cpp -------------------*- C++
//-*-===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
#include "llvm/IR/Metadata.h"
#include "llvm/ProfileData/SampleProfReader.h"
#include "llvm/ProfileData/SampleProfWriter.h"
#include "gtest/gtest.h"
#include <cstdarg>
using namespace llvm;
using namespace sampleprof;
static ::testing::AssertionResult NoError(std::error_code EC) {
if (!EC)
return ::testing::AssertionSuccess();
return ::testing::AssertionFailure() << "error " << EC.value() << ": "
<< EC.message();
}
namespace {
struct SampleProfTest : ::testing::Test {
std::string Data;
std::unique_ptr<raw_ostream> OS;
std::unique_ptr<SampleProfileWriter> Writer;
std::unique_ptr<SampleProfileReader> Reader;
SampleProfTest()
: Data(), OS(new raw_string_ostream(Data)), Writer(), Reader() {}
void createWriter(SampleProfileFormat Format) {
auto WriterOrErr = SampleProfileWriter::create(OS, Format);
ASSERT_TRUE(NoError(WriterOrErr.getError()));
Writer = std::move(WriterOrErr.get());
}
void readProfile(std::unique_ptr<MemoryBuffer> &Profile) {
auto ReaderOrErr = SampleProfileReader::create(Profile, getGlobalContext());
ASSERT_TRUE(NoError(ReaderOrErr.getError()));
Reader = std::move(ReaderOrErr.get());
}
void testRoundTrip(SampleProfileFormat Format) {
createWriter(Format);
StringRef FooName("_Z3fooi");
FunctionSamples FooSamples;
FooSamples.setName(FooName);
FooSamples.addTotalSamples(7711);
FooSamples.addHeadSamples(610);
FooSamples.addBodySamples(1, 0, 610);
FooSamples.addBodySamples(2, 0, 600);
FooSamples.addBodySamples(4, 0, 60000);
FooSamples.addBodySamples(8, 0, 60351);
FooSamples.addBodySamples(10, 0, 605);
StringRef BarName("_Z3bari");
FunctionSamples BarSamples;
BarSamples.setName(BarName);
BarSamples.addTotalSamples(20301);
BarSamples.addHeadSamples(1437);
BarSamples.addBodySamples(1, 0, 1437);
StringMap<FunctionSamples> Profiles;
Profiles[FooName] = std::move(FooSamples);
Profiles[BarName] = std::move(BarSamples);
std::error_code EC;
EC = Writer->write(Profiles);
ASSERT_TRUE(NoError(EC));
Writer->getOutputStream().flush();
auto Profile = MemoryBuffer::getMemBufferCopy(Data);
readProfile(Profile);
EC = Reader->read();
ASSERT_TRUE(NoError(EC));
StringMap<FunctionSamples> &ReadProfiles = Reader->getProfiles();
ASSERT_EQ(2u, ReadProfiles.size());
FunctionSamples &ReadFooSamples = ReadProfiles[FooName];
ASSERT_EQ(7711u, ReadFooSamples.getTotalSamples());
ASSERT_EQ(610u, ReadFooSamples.getHeadSamples());
FunctionSamples &ReadBarSamples = ReadProfiles[BarName];
ASSERT_EQ(20301u, ReadBarSamples.getTotalSamples());
ASSERT_EQ(1437u, ReadBarSamples.getHeadSamples());
auto VerifySummary = [](SampleProfileSummary &Summary) mutable {
ASSERT_EQ(123603u, Summary.getTotalSamples());
ASSERT_EQ(6u, Summary.getNumLinesWithSamples());
ASSERT_EQ(2u, Summary.getNumFunctions());
ASSERT_EQ(1437u, Summary.getMaxFunctionCount());
ASSERT_EQ(60351u, Summary.getMaxSamplesPerLine());
uint32_t Cutoff = 800000;
auto Predicate = [&Cutoff](const ProfileSummaryEntry &PE) {
return PE.Cutoff == Cutoff;
};
std::vector<ProfileSummaryEntry> &Details = Summary.getDetailedSummary();
auto EightyPerc = std::find_if(Details.begin(), Details.end(), Predicate);
Cutoff = 900000;
auto NinetyPerc = std::find_if(Details.begin(), Details.end(), Predicate);
Cutoff = 950000;
auto NinetyFivePerc =
std::find_if(Details.begin(), Details.end(), Predicate);
Cutoff = 990000;
auto NinetyNinePerc =
std::find_if(Details.begin(), Details.end(), Predicate);
ASSERT_EQ(60000u, EightyPerc->MinCount);
ASSERT_EQ(60000u, NinetyPerc->MinCount);
ASSERT_EQ(60000u, NinetyFivePerc->MinCount);
ASSERT_EQ(610u, NinetyNinePerc->MinCount);
};
SampleProfileSummary &Summary = Reader->getSummary();
VerifySummary(Summary);
// Test that conversion of summary to and from Metadata works.
Metadata *MD = Summary.getMD(getGlobalContext());
ASSERT_TRUE(MD);
ProfileSummary *PS = ProfileSummary::getFromMD(MD);
ASSERT_TRUE(PS);
ASSERT_TRUE(isa<SampleProfileSummary>(PS));
SampleProfileSummary *SPS = cast<SampleProfileSummary>(PS);
VerifySummary(*SPS);
delete SPS;
// Test that summary can be attached to and read back from module.
Module M("my_module", getGlobalContext());
M.setProfileSummary(MD);
MD = M.getProfileSummary();
ASSERT_TRUE(MD);
PS = ProfileSummary::getFromMD(MD);
ASSERT_TRUE(PS);
ASSERT_TRUE(isa<SampleProfileSummary>(PS));
SPS = cast<SampleProfileSummary>(PS);
VerifySummary(*SPS);
delete SPS;
}
};
TEST_F(SampleProfTest, roundtrip_text_profile) {
testRoundTrip(SampleProfileFormat::SPF_Text);
}
TEST_F(SampleProfTest, roundtrip_binary_profile) {
testRoundTrip(SampleProfileFormat::SPF_Binary);
}
TEST_F(SampleProfTest, sample_overflow_saturation) {
const uint64_t Max = std::numeric_limits<uint64_t>::max();
sampleprof_error Result;
StringRef FooName("_Z3fooi");
FunctionSamples FooSamples;
Result = FooSamples.addTotalSamples(1);
ASSERT_EQ(Result, sampleprof_error::success);
Result = FooSamples.addHeadSamples(1);
ASSERT_EQ(Result, sampleprof_error::success);
Result = FooSamples.addBodySamples(10, 0, 1);
ASSERT_EQ(Result, sampleprof_error::success);
Result = FooSamples.addTotalSamples(Max);
ASSERT_EQ(Result, sampleprof_error::counter_overflow);
ASSERT_EQ(FooSamples.getTotalSamples(), Max);
Result = FooSamples.addHeadSamples(Max);
ASSERT_EQ(Result, sampleprof_error::counter_overflow);
ASSERT_EQ(FooSamples.getHeadSamples(), Max);
Result = FooSamples.addBodySamples(10, 0, Max);
ASSERT_EQ(Result, sampleprof_error::counter_overflow);
ErrorOr<uint64_t> BodySamples = FooSamples.findSamplesAt(10, 0);
ASSERT_FALSE(BodySamples.getError());
ASSERT_EQ(BodySamples.get(), Max);
}
} // end anonymous namespace
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