unittests/ExecutionEngine/JIT/MultiJITTest.cpp

   1 //===- MultiJITTest.cpp - Unit tests for instantiating multiple JITs ------===//
   2 //
   3 //                     The LLVM Compiler Infrastructure
   4 //
   5 // This file is distributed under the University of Illinois Open Source
   6 // License. See LICENSE.TXT for details.
   7 //
   8 //===----------------------------------------------------------------------===//
   9
  10 #include "gtest/gtest.h"
  11 #include "llvm/LLVMContext.h"
  12 #include "llvm/Module.h"
  13 #include "llvm/Assembly/Parser.h"
  14 #include "llvm/ExecutionEngine/GenericValue.h"
  15 #include "llvm/ExecutionEngine/JIT.h"
  16 #include "llvm/Support/SourceMgr.h"
  17 #include <vector>
  18
  19 using namespace llvm;
  20
  21 namespace {
  22
  23 bool LoadAssemblyInto(Module *M, const char *assembly) {
  24   SMDiagnostic Error;
  25   bool success =
  26     NULL != ParseAssemblyString(assembly, M, Error, M->getContext());
  27   std::string errMsg;
  28   raw_string_ostream os(errMsg);
  29   Error.Print("", os);
  30   EXPECT_TRUE(success) << os.str();
  31   return success;
  32 }
  33
  34 void createModule1(LLVMContext &Context1, Module *&M1, Function *&FooF1) {
  35   M1 = new Module("test1", Context1);
  36   LoadAssemblyInto(M1,
  37                    "define i32 @add1(i32 %ArgX1) { "
  38                    "entry: "
  39                    "  %addresult = add i32 1, %ArgX1 "
  40                    "  ret i32 %addresult "
  41                    "} "
  42                    " "
  43                    "define i32 @foo1() { "
  44                    "entry: "
  45                    "  %add1 = call i32 @add1(i32 10) "
  46                    "  ret i32 %add1 "
  47                    "} ");
  48   FooF1 = M1->getFunction("foo1");
  49 }
  50
  51 void createModule2(LLVMContext &Context2, Module *&M2, Function *&FooF2) {
  52   M2 = new Module("test2", Context2);
  53   LoadAssemblyInto(M2,
  54                    "define i32 @add2(i32 %ArgX2) { "
  55                    "entry: "
  56                    "  %addresult = add i32 2, %ArgX2 "
  57                    "  ret i32 %addresult "
  58                    "} "
  59                    " "
  60                    "define i32 @foo2() { "
  61                    "entry: "
  62                    "  %add2 = call i32 @add2(i32 10) "
  63                    "  ret i32 %add2 "
  64                    "} ");
  65   FooF2 = M2->getFunction("foo2");
  66 }
  67
  68 TEST(MultiJitTest, EagerMode) {
  69   LLVMContext Context1;
  70   Module *M1 = 0;
  71   Function *FooF1 = 0;
  72   createModule1(Context1, M1, FooF1);
  73
  74   LLVMContext Context2;
  75   Module *M2 = 0;
  76   Function *FooF2 = 0;
  77   createModule2(Context2, M2, FooF2);
  78
  79   // Now we create the JIT in eager mode
  80   OwningPtr<ExecutionEngine> EE1(EngineBuilder(M1).create());
  81   EE1->DisableLazyCompilation(true);
  82   OwningPtr<ExecutionEngine> EE2(EngineBuilder(M2).create());
  83   EE2->DisableLazyCompilation(true);
  84
  85   // Call the `foo' function with no arguments:
  86   std::vector<GenericValue> noargs;
  87   GenericValue gv1 = EE1->runFunction(FooF1, noargs);
  88   GenericValue gv2 = EE2->runFunction(FooF2, noargs);
  89
  90   // Import result of execution:
  91   EXPECT_EQ(gv1.IntVal, 11);
  92   EXPECT_EQ(gv2.IntVal, 12);
  93
  94   EE1->freeMachineCodeForFunction(FooF1);
  95   EE2->freeMachineCodeForFunction(FooF2);
  96 }
  97
  98 TEST(MultiJitTest, LazyMode) {
  99   LLVMContext Context1;
 100   Module *M1 = 0;
 101   Function *FooF1 = 0;
 102   createModule1(Context1, M1, FooF1);
 103
 104   LLVMContext Context2;
 105   Module *M2 = 0;
 106   Function *FooF2 = 0;
 107   createModule2(Context2, M2, FooF2);
 108
 109   // Now we create the JIT in lazy mode
 110   OwningPtr<ExecutionEngine> EE1(EngineBuilder(M1).create());
 111   EE1->DisableLazyCompilation(false);
 112   OwningPtr<ExecutionEngine> EE2(EngineBuilder(M2).create());
 113   EE2->DisableLazyCompilation(false);
 114
 115   // Call the `foo' function with no arguments:
 116   std::vector<GenericValue> noargs;
 117   GenericValue gv1 = EE1->runFunction(FooF1, noargs);
 118   GenericValue gv2 = EE2->runFunction(FooF2, noargs);
 119
 120   // Import result of execution:
 121   EXPECT_EQ(gv1.IntVal, 11);
 122   EXPECT_EQ(gv2.IntVal, 12);
 123
 124   EE1->freeMachineCodeForFunction(FooF1);
 125   EE2->freeMachineCodeForFunction(FooF2);
 126 }
 127
 128 extern "C" {
 129   extern void *getPointerToNamedFunction(const char *Name);
 130 }
 131
 132 TEST(MultiJitTest, JitPool) {
 133   LLVMContext Context1;
 134   Module *M1 = 0;
 135   Function *FooF1 = 0;
 136   createModule1(Context1, M1, FooF1);
 137
 138   LLVMContext Context2;
 139   Module *M2 = 0;
 140   Function *FooF2 = 0;
 141   createModule2(Context2, M2, FooF2);
 142
 143   // Now we create two JITs
 144   OwningPtr<ExecutionEngine> EE1(EngineBuilder(M1).create());
 145   OwningPtr<ExecutionEngine> EE2(EngineBuilder(M2).create());
 146
 147   Function *F1 = EE1->FindFunctionNamed("foo1");
 148   void *foo1 = EE1->getPointerToFunction(F1);
 149
 150   Function *F2 = EE2->FindFunctionNamed("foo2");
 151   void *foo2 = EE2->getPointerToFunction(F2);
 152
 153   // Function in M1
 154   EXPECT_EQ(getPointerToNamedFunction("foo1"), foo1);
 155
 156   // Function in M2
 157   EXPECT_EQ(getPointerToNamedFunction("foo2"), foo2);
 158
 159   // Symbol search
 160   EXPECT_EQ((intptr_t)getPointerToNamedFunction("getPointerToNamedFunction"),
 161             (intptr_t)&getPointerToNamedFunction);
 162 }
 163
 164 }  // anonymous namespace