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