1 //===- MultiJITTest.cpp - Unit tests for instantiating multiple JITs ------===//
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/JIT.h"
11 #include "llvm/AsmParser/Parser.h"
12 #include "llvm/ExecutionEngine/GenericValue.h"
13 #include "llvm/IR/LLVMContext.h"
14 #include "llvm/IR/Module.h"
15 #include "llvm/Support/SourceMgr.h"
16 #include "gtest/gtest.h"
23 // ARM, PowerPC and SystemZ tests disabled pending fix for PR10783.
24 #if !defined(__arm__) && !defined(__powerpc__) && !defined(__s390__) \
25 && !defined(__aarch64__)
27 std::unique_ptr<Module> loadAssembly(LLVMContext &Context,
28 const char *Assembly) {
30 std::unique_ptr<Module> Ret(
31 ParseAssemblyString(Assembly, nullptr, Error, Context));
33 raw_string_ostream os(errMsg);
35 EXPECT_TRUE((bool)Ret) << os.str();
36 return std::move(Ret);
39 std::unique_ptr<Module> createModule1(LLVMContext &Context1, Function *&FooF1) {
40 std::unique_ptr<Module> Ret = loadAssembly(Context1,
41 "define i32 @add1(i32 %ArgX1) { "
43 " %addresult = add i32 1, %ArgX1 "
44 " ret i32 %addresult "
47 "define i32 @foo1() { "
49 " %add1 = call i32 @add1(i32 10) "
52 FooF1 = Ret->getFunction("foo1");
53 return std::move(Ret);
56 std::unique_ptr<Module> createModule2(LLVMContext &Context2, Function *&FooF2) {
57 std::unique_ptr<Module> Ret = loadAssembly(Context2,
58 "define i32 @add2(i32 %ArgX2) { "
60 " %addresult = add i32 2, %ArgX2 "
61 " ret i32 %addresult "
64 "define i32 @foo2() { "
66 " %add2 = call i32 @add2(i32 10) "
69 FooF2 = Ret->getFunction("foo2");
70 return std::move(Ret);
73 TEST(MultiJitTest, EagerMode) {
75 Function *FooF1 = nullptr;
76 std::unique_ptr<Module> M1 = createModule1(Context1, FooF1);
79 Function *FooF2 = nullptr;
80 std::unique_ptr<Module> M2 = createModule2(Context2, FooF2);
82 // Now we create the JIT in eager mode
83 std::unique_ptr<ExecutionEngine> EE1(EngineBuilder(std::move(M1)).create());
84 EE1->DisableLazyCompilation(true);
85 std::unique_ptr<ExecutionEngine> EE2(EngineBuilder(std::move(M2)).create());
86 EE2->DisableLazyCompilation(true);
88 // Call the `foo' function with no arguments:
89 std::vector<GenericValue> noargs;
90 GenericValue gv1 = EE1->runFunction(FooF1, noargs);
91 GenericValue gv2 = EE2->runFunction(FooF2, noargs);
93 // Import result of execution:
94 EXPECT_EQ(gv1.IntVal, 11);
95 EXPECT_EQ(gv2.IntVal, 12);
97 EE1->freeMachineCodeForFunction(FooF1);
98 EE2->freeMachineCodeForFunction(FooF2);
101 TEST(MultiJitTest, LazyMode) {
102 LLVMContext Context1;
103 Function *FooF1 = nullptr;
104 std::unique_ptr<Module> M1 = createModule1(Context1, FooF1);
106 LLVMContext Context2;
107 Function *FooF2 = nullptr;
108 std::unique_ptr<Module> M2 = createModule2(Context2, FooF2);
110 // Now we create the JIT in lazy mode
111 std::unique_ptr<ExecutionEngine> EE1(EngineBuilder(std::move(M1)).create());
112 EE1->DisableLazyCompilation(false);
113 std::unique_ptr<ExecutionEngine> EE2(EngineBuilder(std::move(M2)).create());
114 EE2->DisableLazyCompilation(false);
116 // Call the `foo' function with no arguments:
117 std::vector<GenericValue> noargs;
118 GenericValue gv1 = EE1->runFunction(FooF1, noargs);
119 GenericValue gv2 = EE2->runFunction(FooF2, noargs);
121 // Import result of execution:
122 EXPECT_EQ(gv1.IntVal, 11);
123 EXPECT_EQ(gv2.IntVal, 12);
125 EE1->freeMachineCodeForFunction(FooF1);
126 EE2->freeMachineCodeForFunction(FooF2);
130 extern void *getPointerToNamedFunction(const char *Name);
133 TEST(MultiJitTest, JitPool) {
134 LLVMContext Context1;
135 Function *FooF1 = nullptr;
136 std::unique_ptr<Module> M1 = createModule1(Context1, FooF1);
138 LLVMContext Context2;
139 Function *FooF2 = nullptr;
140 std::unique_ptr<Module> M2 = createModule2(Context2, FooF2);
142 // Now we create two JITs
143 std::unique_ptr<ExecutionEngine> EE1(EngineBuilder(std::move(M1)).create());
144 std::unique_ptr<ExecutionEngine> EE2(EngineBuilder(std::move(M2)).create());
146 Function *F1 = EE1->FindFunctionNamed("foo1");
147 void *foo1 = EE1->getPointerToFunction(F1);
149 Function *F2 = EE2->FindFunctionNamed("foo2");
150 void *foo2 = EE2->getPointerToFunction(F2);
153 EXPECT_EQ(getPointerToNamedFunction("foo1"), foo1);
156 EXPECT_EQ(getPointerToNamedFunction("foo2"), foo2);
160 sa = (intptr_t)getPointerToNamedFunction("getPointerToNamedFunction");
161 EXPECT_TRUE(sa != 0);
162 intptr_t fa = (intptr_t)&getPointerToNamedFunction;
163 EXPECT_TRUE(fa != 0);
165 // getPointerToNamedFunction might be indirect jump on Win32 --enable-shared.
166 // FF 25 <disp32>: jmp *(pointer to IAT)
167 if (sa != fa && memcmp((char *)fa, "\xFF\x25", 2) == 0) {
168 fa = *(intptr_t *)(fa + 2); // Address to IAT
169 EXPECT_TRUE(fa != 0);
170 fa = *(intptr_t *)fa; // Bound value of IAT
172 #elif defined(__x86_64__)
173 // getPointerToNamedFunction might be indirect jump
174 // on Win32 x64 --enable-shared.
175 // FF 25 <pcrel32>: jmp *(RIP + pointer to IAT)
176 if (sa != fa && memcmp((char *)fa, "\xFF\x25", 2) == 0) {
177 fa += *(int32_t *)(fa + 2) + 6; // Address to IAT(RIP)
178 fa = *(intptr_t *)fa; // Bound value of IAT
181 EXPECT_TRUE(sa == fa);
183 #endif // !defined(__arm__) && !defined(__powerpc__) && !defined(__s390__)
185 } // anonymous namespace