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//===-- InMemoryAssemblerTest.cpp -------------------------------*- C++ -*-===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
#include "InMemoryAssembler.h"
#include "X86InstrInfo.h"
#include "llvm/ADT/ArrayRef.h"
#include "llvm/CodeGen/MachineInstrBuilder.h"
#include "llvm/CodeGen/TargetInstrInfo.h"
#include "llvm/CodeGen/TargetSubtargetInfo.h"
#include "llvm/MC/MCInstBuilder.h"
#include "llvm/Support/Host.h"
#include "llvm/Support/TargetRegistry.h"
#include "llvm/Support/TargetSelect.h"
#include "gmock/gmock.h"
#include "gtest/gtest.h"
#include <memory>
namespace exegesis {
namespace {
using llvm::MCInstBuilder;
using llvm::X86::EAX;
using llvm::X86::MOV32ri;
using llvm::X86::MOV64ri32;
using llvm::X86::RAX;
using llvm::X86::XOR32rr;
using testing::ElementsAre;
class MachineFunctionGeneratorTest : public ::testing::Test {
protected:
MachineFunctionGeneratorTest()
: TT(llvm::sys::getProcessTriple()),
CpuName(llvm::sys::getHostCPUName().str()) {}
static void SetUpTestCase() {
LLVMInitializeX86TargetInfo();
LLVMInitializeX86TargetMC();
LLVMInitializeX86Target();
LLVMInitializeX86AsmPrinter();
}
std::unique_ptr<llvm::LLVMTargetMachine> createTargetMachine() {
std::string Error;
const llvm::Target *TheTarget =
llvm::TargetRegistry::lookupTarget(TT, Error);
EXPECT_TRUE(TheTarget) << Error << " " << TT;
const llvm::TargetOptions Options;
llvm::TargetMachine* TM = TheTarget->createTargetMachine(
TT, CpuName, "", Options, llvm::Reloc::Model::Static);
EXPECT_TRUE(TM) << TT << " " << CpuName;
return std::unique_ptr<llvm::LLVMTargetMachine>(
static_cast<llvm::LLVMTargetMachine *>(TM));
}
bool IsSupportedTarget() const {
return llvm::StringRef(TT).startswith_lower("x86_64");
}
private:
const std::string TT;
const std::string CpuName;
};
// Used to skip tests on unsupported architectures and operating systems.
// To skip a test, add this macro at the top of a test-case.
#define SKIP_UNSUPPORTED_PLATFORM \
do \
if (!IsSupportedTarget()) \
return; \
while(0)
TEST_F(MachineFunctionGeneratorTest, DISABLED_JitFunction) {
SKIP_UNSUPPORTED_PLATFORM;
JitFunctionContext Context(createTargetMachine());
JitFunction Function(std::move(Context), {});
ASSERT_THAT(Function.getFunctionBytes().str(), ElementsAre(0xc3));
// FIXME: Check that the function runs without errors. Right now this is
// disabled because it fails on some bots.
// Function();
}
TEST_F(MachineFunctionGeneratorTest, DISABLED_JitFunctionXOR32rr) {
SKIP_UNSUPPORTED_PLATFORM;
JitFunctionContext Context(createTargetMachine());
JitFunction Function(
std::move(Context),
{MCInstBuilder(XOR32rr).addReg(EAX).addReg(EAX).addReg(EAX)});
ASSERT_THAT(Function.getFunctionBytes().str(), ElementsAre(0x31, 0xc0, 0xc3));
// Function();
}
TEST_F(MachineFunctionGeneratorTest, DISABLED_JitFunctionMOV64ri) {
SKIP_UNSUPPORTED_PLATFORM;
JitFunctionContext Context(createTargetMachine());
JitFunction Function(std::move(Context),
{MCInstBuilder(MOV64ri32).addReg(RAX).addImm(42)});
ASSERT_THAT(Function.getFunctionBytes().str(),
ElementsAre(0x48, 0xc7, 0xc0, 0x2a, 0x00, 0x00, 0x00, 0xc3));
// Function();
}
TEST_F(MachineFunctionGeneratorTest, DISABLED_JitFunctionMOV32ri) {
SKIP_UNSUPPORTED_PLATFORM;
JitFunctionContext Context(createTargetMachine());
JitFunction Function(std::move(Context),
{MCInstBuilder(MOV32ri).addReg(EAX).addImm(42)});
ASSERT_THAT(Function.getFunctionBytes().str(),
ElementsAre(0xb8, 0x2a, 0x00, 0x00, 0x00, 0xc3));
// Function();
}
} // namespace
} // namespace exegesis
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