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//===-- SnippetFileTest.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 "SnippetFile.h"
#include "LlvmState.h"
#include "X86InstrInfo.h"
#include "llvm/Support/Error.h"
#include "llvm/Support/FileSystem.h"
#include "llvm/Support/Path.h"
#include "llvm/Support/TargetRegistry.h"
#include "llvm/Support/TargetSelect.h"
#include "llvm/Support/raw_ostream.h"
#include "gmock/gmock.h"
#include "gtest/gtest.h"
namespace llvm {
namespace exegesis {
void InitializeX86ExegesisTarget();
namespace {
using testing::AllOf;
using testing::ElementsAre;
using testing::Eq;
using testing::Field;
using testing::Property;
using testing::SizeIs;
class X86SnippetFileTest : public ::testing::Test {
protected:
X86SnippetFileTest() : State("x86_64-unknown-linux", "haswell") {}
static void SetUpTestCase() {
LLVMInitializeX86TargetInfo();
LLVMInitializeX86TargetMC();
LLVMInitializeX86Target();
LLVMInitializeX86AsmPrinter();
LLVMInitializeX86AsmParser();
InitializeX86ExegesisTarget();
}
Expected<std::vector<BenchmarkCode>> TestCommon(StringRef Contents) {
SmallString<64> Filename;
std::error_code EC;
EC = sys::fs::createUniqueDirectory("SnippetFileTestDir", Filename);
EXPECT_FALSE(EC);
sys::path::append(Filename, "snippet.s");
errs() << Filename << "-------\n";
{
raw_fd_ostream FOS(Filename, EC);
FOS << Contents;
EXPECT_FALSE(EC);
}
return readSnippets(State, Filename);
}
const LLVMState State;
};
// FIXME: Refactor these to ../Common/Matchers.h
static auto HasOpcode = [](unsigned Opcode) {
return Property(&MCInst::getOpcode, Eq(Opcode));
};
MATCHER_P2(RegisterInitialValueIs, Reg, Val, "") {
if (arg.Register == Reg &&
arg.Value.getLimitedValue() == static_cast<uint64_t>(Val))
return true;
*result_listener << "expected: {" << Reg << ", " << Val << "} ";
*result_listener << "actual: {" << arg.Register << ", "
<< arg.Value.getLimitedValue() << "}";
return false;
}
TEST_F(X86SnippetFileTest, Works) {
auto Snippets = TestCommon(R"(
# LLVM-EXEGESIS-DEFREG RAX 0f
# LLVM-EXEGESIS-DEFREG SIL 0
# LLVM-EXEGESIS-LIVEIN RDI
# LLVM-EXEGESIS-LIVEIN DL
incq %rax
)");
EXPECT_FALSE((bool)Snippets.takeError());
ASSERT_THAT(*Snippets, SizeIs(1));
const auto &Snippet = (*Snippets)[0];
ASSERT_THAT(Snippet.Instructions, ElementsAre(HasOpcode(X86::INC64r)));
ASSERT_THAT(Snippet.RegisterInitialValues,
ElementsAre(RegisterInitialValueIs(X86::RAX, 15),
RegisterInitialValueIs(X86::SIL, 0)));
ASSERT_THAT(Snippet.LiveIns, ElementsAre(X86::RDI, X86::DL));
}
TEST_F(X86SnippetFileTest, BadDefregParam) {
auto Error = TestCommon(R"(
# LLVM-EXEGESIS-DEFREG DOESNOEXIST 0
incq %rax
)")
.takeError();
EXPECT_TRUE((bool)Error);
consumeError(std::move(Error));
}
TEST_F(X86SnippetFileTest, NoDefregValue) {
auto Error = TestCommon(R"(
# LLVM-EXEGESIS-DEFREG RAX
incq %rax
)")
.takeError();
EXPECT_TRUE((bool)Error);
consumeError(std::move(Error));
}
TEST_F(X86SnippetFileTest, MissingParam) {
auto Error = TestCommon(R"(
# LLVM-EXEGESIS-LIVEIN
incq %rax
)")
.takeError();
EXPECT_TRUE((bool)Error);
consumeError(std::move(Error));
}
} // namespace
} // namespace exegesis
} // namespace llvm
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