1 //===- JITEventListenerTest.cpp - Unit tests for JITEventListeners --------===//
3 // The LLVM Compiler Infrastructure
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
10 #include "llvm/ExecutionEngine/JITEventListener.h"
12 #include "llvm/Instructions.h"
13 #include "llvm/Module.h"
14 #include "llvm/ModuleProvider.h"
15 #include "llvm/ADT/OwningPtr.h"
16 #include "llvm/CodeGen/MachineCodeInfo.h"
17 #include "llvm/ExecutionEngine/JIT.h"
18 #include "llvm/Support/TypeBuilder.h"
19 #include "llvm/Target/TargetSelect.h"
20 #include "gtest/gtest.h"
27 struct FunctionEmittedEvent {
28 // Indices are local to the RecordingJITEventListener, since the
29 // JITEventListener interface makes no guarantees about the order of
30 // calls between Listeners.
35 JITEvent_EmittedFunctionDetails Details;
37 struct FunctionFreedEvent {
43 struct RecordingJITEventListener : public JITEventListener {
44 std::vector<FunctionEmittedEvent> EmittedEvents;
45 std::vector<FunctionFreedEvent> FreedEvents;
49 RecordingJITEventListener() : NextIndex(0) {}
51 virtual void NotifyFunctionEmitted(const Function &F,
52 void *Code, size_t Size,
53 const EmittedFunctionDetails &Details) {
54 FunctionEmittedEvent Event = {NextIndex++, &F, Code, Size, Details};
55 EmittedEvents.push_back(Event);
58 virtual void NotifyFreeingMachineCode(const Function &F, void *OldPtr) {
59 FunctionFreedEvent Event = {NextIndex++, &F, OldPtr};
60 FreedEvents.push_back(Event);
64 class JITEventListenerTest : public testing::Test {
66 JITEventListenerTest()
67 : M(new Module("module")),
68 EE(ExecutionEngine::createJIT(new ExistingModuleProvider(M))) {
72 const OwningPtr<ExecutionEngine> EE;
75 Function *buildFunction(Module *M) {
76 Function *Result = Function::Create(
77 TypeBuilder<int32_t(int32_t), false>::get(),
78 GlobalValue::ExternalLinkage, "id", M);
79 Value *Arg = Result->arg_begin();
80 BasicBlock *BB = BasicBlock::Create("entry", Result);
81 ReturnInst::Create(Arg, BB);
85 // Tests that a single JITEventListener follows JIT events accurately.
86 TEST_F(JITEventListenerTest, Simple) {
87 RecordingJITEventListener Listener;
88 EE->RegisterJITEventListener(&Listener);
89 Function *F1 = buildFunction(M);
90 Function *F2 = buildFunction(M);
92 void *F1_addr = EE->getPointerToFunction(F1);
93 void *F2_addr = EE->getPointerToFunction(F2);
94 EE->getPointerToFunction(F1); // Should do nothing.
95 EE->freeMachineCodeForFunction(F1);
96 EE->freeMachineCodeForFunction(F2);
98 ASSERT_EQ(2U, Listener.EmittedEvents.size());
99 ASSERT_EQ(2U, Listener.FreedEvents.size());
101 EXPECT_EQ(0U, Listener.EmittedEvents[0].Index);
102 EXPECT_EQ(F1, Listener.EmittedEvents[0].F);
103 EXPECT_EQ(F1_addr, Listener.EmittedEvents[0].Code);
104 EXPECT_LT(0U, Listener.EmittedEvents[0].Size)
105 << "We don't know how big the function will be, but it had better"
106 << " contain some bytes.";
108 EXPECT_EQ(1U, Listener.EmittedEvents[1].Index);
109 EXPECT_EQ(F2, Listener.EmittedEvents[1].F);
110 EXPECT_EQ(F2_addr, Listener.EmittedEvents[1].Code);
111 EXPECT_LT(0U, Listener.EmittedEvents[1].Size)
112 << "We don't know how big the function will be, but it had better"
113 << " contain some bytes.";
115 EXPECT_EQ(2U, Listener.FreedEvents[0].Index);
116 EXPECT_EQ(F1, Listener.FreedEvents[0].F);
117 EXPECT_EQ(F1_addr, Listener.FreedEvents[0].Code);
119 EXPECT_EQ(3U, Listener.FreedEvents[1].Index);
120 EXPECT_EQ(F2, Listener.FreedEvents[1].F);
121 EXPECT_EQ(F2_addr, Listener.FreedEvents[1].Code);
123 F1->eraseFromParent();
124 F2->eraseFromParent();
127 // Tests that a single JITEventListener follows JIT events accurately.
128 TEST_F(JITEventListenerTest, MultipleListenersDontInterfere) {
129 RecordingJITEventListener Listener1;
130 RecordingJITEventListener Listener2;
131 RecordingJITEventListener Listener3;
132 Function *F1 = buildFunction(M);
133 Function *F2 = buildFunction(M);
135 EE->RegisterJITEventListener(&Listener1);
136 EE->RegisterJITEventListener(&Listener2);
137 void *F1_addr = EE->getPointerToFunction(F1);
138 EE->RegisterJITEventListener(&Listener3);
139 EE->UnregisterJITEventListener(&Listener1);
140 void *F2_addr = EE->getPointerToFunction(F2);
141 EE->UnregisterJITEventListener(&Listener2);
142 EE->UnregisterJITEventListener(&Listener3);
143 EE->freeMachineCodeForFunction(F1);
144 EE->RegisterJITEventListener(&Listener2);
145 EE->RegisterJITEventListener(&Listener3);
146 EE->RegisterJITEventListener(&Listener1);
147 EE->freeMachineCodeForFunction(F2);
148 EE->UnregisterJITEventListener(&Listener1);
149 EE->UnregisterJITEventListener(&Listener2);
150 EE->UnregisterJITEventListener(&Listener3);
153 ASSERT_EQ(1U, Listener1.EmittedEvents.size());
154 ASSERT_EQ(1U, Listener1.FreedEvents.size());
156 EXPECT_EQ(0U, Listener1.EmittedEvents[0].Index);
157 EXPECT_EQ(F1, Listener1.EmittedEvents[0].F);
158 EXPECT_EQ(F1_addr, Listener1.EmittedEvents[0].Code);
159 EXPECT_LT(0U, Listener1.EmittedEvents[0].Size)
160 << "We don't know how big the function will be, but it had better"
161 << " contain some bytes.";
163 EXPECT_EQ(1U, Listener1.FreedEvents[0].Index);
164 EXPECT_EQ(F2, Listener1.FreedEvents[0].F);
165 EXPECT_EQ(F2_addr, Listener1.FreedEvents[0].Code);
168 ASSERT_EQ(2U, Listener2.EmittedEvents.size());
169 ASSERT_EQ(1U, Listener2.FreedEvents.size());
171 EXPECT_EQ(0U, Listener2.EmittedEvents[0].Index);
172 EXPECT_EQ(F1, Listener2.EmittedEvents[0].F);
173 EXPECT_EQ(F1_addr, Listener2.EmittedEvents[0].Code);
174 EXPECT_LT(0U, Listener2.EmittedEvents[0].Size)
175 << "We don't know how big the function will be, but it had better"
176 << " contain some bytes.";
178 EXPECT_EQ(1U, Listener2.EmittedEvents[1].Index);
179 EXPECT_EQ(F2, Listener2.EmittedEvents[1].F);
180 EXPECT_EQ(F2_addr, Listener2.EmittedEvents[1].Code);
181 EXPECT_LT(0U, Listener2.EmittedEvents[1].Size)
182 << "We don't know how big the function will be, but it had better"
183 << " contain some bytes.";
185 EXPECT_EQ(2U, Listener2.FreedEvents[0].Index);
186 EXPECT_EQ(F2, Listener2.FreedEvents[0].F);
187 EXPECT_EQ(F2_addr, Listener2.FreedEvents[0].Code);
190 ASSERT_EQ(1U, Listener3.EmittedEvents.size());
191 ASSERT_EQ(1U, Listener3.FreedEvents.size());
193 EXPECT_EQ(0U, Listener3.EmittedEvents[0].Index);
194 EXPECT_EQ(F2, Listener3.EmittedEvents[0].F);
195 EXPECT_EQ(F2_addr, Listener3.EmittedEvents[0].Code);
196 EXPECT_LT(0U, Listener3.EmittedEvents[0].Size)
197 << "We don't know how big the function will be, but it had better"
198 << " contain some bytes.";
200 EXPECT_EQ(1U, Listener3.FreedEvents[0].Index);
201 EXPECT_EQ(F2, Listener3.FreedEvents[0].F);
202 EXPECT_EQ(F2_addr, Listener3.FreedEvents[0].Code);
204 F1->eraseFromParent();
205 F2->eraseFromParent();
208 TEST_F(JITEventListenerTest, MatchesMachineCodeInfo) {
209 RecordingJITEventListener Listener;
211 Function *F = buildFunction(M);
213 EE->RegisterJITEventListener(&Listener);
214 EE->runJITOnFunction(F, &MCI);
215 void *F_addr = EE->getPointerToFunction(F);
216 EE->freeMachineCodeForFunction(F);
218 ASSERT_EQ(1U, Listener.EmittedEvents.size());
219 ASSERT_EQ(1U, Listener.FreedEvents.size());
221 EXPECT_EQ(0U, Listener.EmittedEvents[0].Index);
222 EXPECT_EQ(F, Listener.EmittedEvents[0].F);
223 EXPECT_EQ(F_addr, Listener.EmittedEvents[0].Code);
224 EXPECT_EQ(MCI.address(), Listener.EmittedEvents[0].Code);
225 EXPECT_EQ(MCI.size(), Listener.EmittedEvents[0].Size);
227 EXPECT_EQ(1U, Listener.FreedEvents[0].Index);
228 EXPECT_EQ(F, Listener.FreedEvents[0].F);
229 EXPECT_EQ(F_addr, Listener.FreedEvents[0].Code);
232 class JITEnvironment : public testing::Environment {
233 virtual void SetUp() {
234 // Required for ExecutionEngine::createJIT to create a JIT.
235 InitializeNativeTarget();
238 testing::Environment* const jit_env =
239 testing::AddGlobalTestEnvironment(new JITEnvironment);
241 } // anonymous namespace