1 //===-- TargetTest.cpp ------------------------------------------*- C++ -*-===//
2 //
3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4 // See https://llvm.org/LICENSE.txt for license information.
5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6 //
7 //===----------------------------------------------------------------------===//
8
9 #include "Target.h"
10
11 #include <cassert>
12 #include <memory>
13
14 #include "MCTargetDesc/AArch64MCTargetDesc.h"
15 #include "llvm/MC/TargetRegistry.h"
16 #include "llvm/Support/TargetSelect.h"
17 #include "gmock/gmock.h"
18 #include "gtest/gtest.h"
19
20 namespace llvm {
21 namespace exegesis {
22
23 void InitializeAArch64ExegesisTarget();
24
25 namespace {
26
27 using testing::IsEmpty;
28 using testing::Not;
29 using testing::NotNull;
30
31 constexpr const char kTriple[] = "aarch64-unknown-linux";
32
33 class AArch64TargetTest : public ::testing::Test {
34 protected:
AArch64TargetTest()35 AArch64TargetTest()
36 : ExegesisTarget_(ExegesisTarget::lookup(Triple(kTriple))) {
37 EXPECT_THAT(ExegesisTarget_, NotNull());
38 std::string error;
39 Target_ = TargetRegistry::lookupTarget(kTriple, error);
40 EXPECT_THAT(Target_, NotNull());
41 STI_.reset(
42 Target_->createMCSubtargetInfo(kTriple, "generic", /*no features*/ ""));
43 }
44
SetUpTestCase()45 static void SetUpTestCase() {
46 LLVMInitializeAArch64TargetInfo();
47 LLVMInitializeAArch64Target();
48 LLVMInitializeAArch64TargetMC();
49 InitializeAArch64ExegesisTarget();
50 }
51
setRegTo(unsigned Reg,const APInt & Value)52 std::vector<MCInst> setRegTo(unsigned Reg, const APInt &Value) {
53 return ExegesisTarget_->setRegTo(*STI_, Reg, Value);
54 }
55
56 const Target *Target_;
57 const ExegesisTarget *const ExegesisTarget_;
58 std::unique_ptr<MCSubtargetInfo> STI_;
59 };
60
TEST_F(AArch64TargetTest,SetRegToConstant)61 TEST_F(AArch64TargetTest, SetRegToConstant) {
62 // The AArch64 target currently doesn't know how to set register values.
63 const auto Insts = setRegTo(AArch64::X0, APInt());
64 EXPECT_THAT(Insts, Not(IsEmpty()));
65 }
66
TEST_F(AArch64TargetTest,DefaultPfmCounters)67 TEST_F(AArch64TargetTest, DefaultPfmCounters) {
68 const std::string Expected = "CPU_CYCLES";
69 EXPECT_EQ(ExegesisTarget_->getPfmCounters("").CycleCounter, Expected);
70 EXPECT_EQ(ExegesisTarget_->getPfmCounters("unknown_cpu").CycleCounter,
71 Expected);
72 }
73
74 } // namespace
75 } // namespace exegesis
76 } // namespace llvm
77