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//===----------------------- ELFTypesTest.cpp -----------------------------===//
//
// 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 "llvm/Object/ELFTypes.h"
#include "llvm/Testing/Support/Error.h"
#include "gtest/gtest.h"
#include <iostream>
using namespace llvm;
using namespace llvm::object;
template <typename ELFT> using Elf_Note = typename ELFT::Note;
template <class ELFT> struct NoteTestData {
std::vector<uint8_t> Data;
const Elf_Note_Impl<ELFT> getElfNote(StringRef Name, uint32_t Type,
ArrayRef<uint8_t> Desc) {
constexpr uint64_t Align = 4;
Data.resize(alignTo(sizeof(Elf_Nhdr_Impl<ELFT>) + Name.size(), Align) +
alignTo(Desc.size(), Align),
0);
Elf_Nhdr_Impl<ELFT> *Nhdr =
reinterpret_cast<Elf_Nhdr_Impl<ELFT> *>(Data.data());
Nhdr->n_namesz = (Name == "") ? 0 : Name.size() + 1;
Nhdr->n_descsz = Desc.size();
Nhdr->n_type = Type;
auto NameOffset = Data.begin() + sizeof(*Nhdr);
std::copy(Name.begin(), Name.end(), NameOffset);
auto DescOffset =
Data.begin() + alignTo(sizeof(*Nhdr) + Nhdr->n_namesz, Align);
std::copy(Desc.begin(), Desc.end(), DescOffset);
return Elf_Note_Impl<ELFT>(*Nhdr);
}
};
TEST(ELFTypesTest, NoteTest) {
static const uint8_t Random[] = {1, 2, 3, 4, 5, 6, 7, 8, 9};
ArrayRef<uint8_t> RandomData = ArrayRef(Random);
NoteTestData<ELF64LE> TestData;
auto Note1 = TestData.getElfNote(StringRef("AMD"), ELF::NT_AMDGPU_METADATA,
RandomData);
EXPECT_EQ(Note1.getName(), "AMD");
EXPECT_EQ(Note1.getType(), ELF::NT_AMDGPU_METADATA);
EXPECT_EQ(Note1.getDesc(4), RandomData);
EXPECT_EQ(Note1.getDescAsStringRef(4),
StringRef(reinterpret_cast<const char *>(Random), sizeof(Random)));
auto Note2 = TestData.getElfNote("", ELF::NT_AMDGPU_METADATA, RandomData);
EXPECT_EQ(Note2.getName(), "");
auto Note3 =
TestData.getElfNote("AMD", ELF::NT_AMDGPU_METADATA, ArrayRef<uint8_t>());
EXPECT_EQ(Note3.getDescAsStringRef(4), StringRef(""));
}
TEST(ELFTypesTest, BBEntryMetadataEncodingTest) {
const std::array<BBAddrMap::BBEntry::Metadata, 7> Decoded = {
{{false, false, false, false, false},
{true, false, false, false, false},
{false, true, false, false, false},
{false, false, true, false, false},
{false, false, false, true, false},
{false, false, false, false, true},
{true, true, true, true, true}}};
const std::array<uint32_t, 7> Encoded = {{0, 1, 2, 4, 8, 16, 31}};
for (size_t i = 0; i < Decoded.size(); ++i)
EXPECT_EQ(Decoded[i].encode(), Encoded[i]);
for (size_t i = 0; i < Encoded.size(); ++i) {
Expected<BBAddrMap::BBEntry::Metadata> MetadataOrError =
BBAddrMap::BBEntry::Metadata::decode(Encoded[i]);
ASSERT_THAT_EXPECTED(MetadataOrError, Succeeded());
EXPECT_EQ(*MetadataOrError, Decoded[i]);
}
}
TEST(ELFTypesTest, BBEntryMetadataInvalidEncodingTest) {
const std::array<std::string, 2> Errors = {
"invalid encoding for BBEntry::Metadata: 0xffff",
"invalid encoding for BBEntry::Metadata: 0x100001"};
const std::array<uint32_t, 2> Values = {{0xFFFF, 0x100001}};
for (size_t i = 0; i < Values.size(); ++i) {
EXPECT_THAT_ERROR(
BBAddrMap::BBEntry::Metadata::decode(Values[i]).takeError(),
FailedWithMessage(Errors[i]));
}
}
static_assert(
std::is_same_v<decltype(PGOAnalysisMap::PGOBBEntry::SuccessorEntry::ID),
decltype(BBAddrMap::BBEntry::ID)>,
"PGOAnalysisMap should use the same type for basic block ID as BBAddrMap");
TEST(ELFTypesTest, BBAddrMapFeaturesEncodingTest) {
const std::array<BBAddrMap::Features, 9> Decoded = {
{{false, false, false, false, false},
{true, false, false, false, false},
{false, true, false, false, false},
{false, false, true, false, false},
{false, false, false, true, false},
{true, true, false, false, false},
{false, true, true, false, false},
{false, true, true, true, false},
{true, true, true, true, false}}};
const std::array<uint8_t, 9> Encoded = {
{0b0000, 0b0001, 0b0010, 0b0100, 0b1000, 0b0011, 0b0110, 0b1110, 0b1111}};
for (const auto &[Feat, EncodedVal] : llvm::zip(Decoded, Encoded))
EXPECT_EQ(Feat.encode(), EncodedVal);
for (const auto &[Feat, EncodedVal] : llvm::zip(Decoded, Encoded)) {
Expected<BBAddrMap::Features> FeatEnableOrError =
BBAddrMap::Features::decode(EncodedVal);
ASSERT_THAT_EXPECTED(FeatEnableOrError, Succeeded());
EXPECT_EQ(*FeatEnableOrError, Feat);
}
}
TEST(ELFTypesTest, BBAddrMapFeaturesInvalidEncodingTest) {
const std::array<std::string, 2> Errors = {
"invalid encoding for BBAddrMap::Features: 0x20",
"invalid encoding for BBAddrMap::Features: 0xf0"};
const std::array<uint8_t, 2> Values = {{0b10'0000, 0b1111'0000}};
for (const auto &[Val, Error] : llvm::zip(Values, Errors)) {
EXPECT_THAT_ERROR(BBAddrMap::Features::decode(Val).takeError(),
FailedWithMessage(Error));
}
}
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