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//===- MultiJITTest.cpp - Unit tests for instantiating multiple JITs ------===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
#include "gtest/gtest.h"
#include "llvm/LLVMContext.h"
#include "llvm/Module.h"
#include "llvm/Assembly/Parser.h"
#include "llvm/ExecutionEngine/GenericValue.h"
#include "llvm/ExecutionEngine/JIT.h"
#include "llvm/Support/SourceMgr.h"
#include <vector>
using namespace llvm;
namespace {
bool LoadAssemblyInto(Module *M, const char *assembly) {
SMDiagnostic Error;
bool success =
NULL != ParseAssemblyString(assembly, M, Error, M->getContext());
std::string errMsg;
raw_string_ostream os(errMsg);
Error.print("", os);
EXPECT_TRUE(success) << os.str();
return success;
}
void createModule1(LLVMContext &Context1, Module *&M1, Function *&FooF1) {
M1 = new Module("test1", Context1);
LoadAssemblyInto(M1,
"define i32 @add1(i32 %ArgX1) { "
"entry: "
" %addresult = add i32 1, %ArgX1 "
" ret i32 %addresult "
"} "
" "
"define i32 @foo1() { "
"entry: "
" %add1 = call i32 @add1(i32 10) "
" ret i32 %add1 "
"} ");
FooF1 = M1->getFunction("foo1");
}
void createModule2(LLVMContext &Context2, Module *&M2, Function *&FooF2) {
M2 = new Module("test2", Context2);
LoadAssemblyInto(M2,
"define i32 @add2(i32 %ArgX2) { "
"entry: "
" %addresult = add i32 2, %ArgX2 "
" ret i32 %addresult "
"} "
" "
"define i32 @foo2() { "
"entry: "
" %add2 = call i32 @add2(i32 10) "
" ret i32 %add2 "
"} ");
FooF2 = M2->getFunction("foo2");
}
// ARM tests disabled pending fix for PR10783.
#if !defined(__arm__)
TEST(MultiJitTest, EagerMode) {
LLVMContext Context1;
Module *M1 = 0;
Function *FooF1 = 0;
createModule1(Context1, M1, FooF1);
LLVMContext Context2;
Module *M2 = 0;
Function *FooF2 = 0;
createModule2(Context2, M2, FooF2);
// Now we create the JIT in eager mode
OwningPtr<ExecutionEngine> EE1(EngineBuilder(M1).create());
EE1->DisableLazyCompilation(true);
OwningPtr<ExecutionEngine> EE2(EngineBuilder(M2).create());
EE2->DisableLazyCompilation(true);
// Call the `foo' function with no arguments:
std::vector<GenericValue> noargs;
GenericValue gv1 = EE1->runFunction(FooF1, noargs);
GenericValue gv2 = EE2->runFunction(FooF2, noargs);
// Import result of execution:
EXPECT_EQ(gv1.IntVal, 11);
EXPECT_EQ(gv2.IntVal, 12);
EE1->freeMachineCodeForFunction(FooF1);
EE2->freeMachineCodeForFunction(FooF2);
}
TEST(MultiJitTest, LazyMode) {
LLVMContext Context1;
Module *M1 = 0;
Function *FooF1 = 0;
createModule1(Context1, M1, FooF1);
LLVMContext Context2;
Module *M2 = 0;
Function *FooF2 = 0;
createModule2(Context2, M2, FooF2);
// Now we create the JIT in lazy mode
OwningPtr<ExecutionEngine> EE1(EngineBuilder(M1).create());
EE1->DisableLazyCompilation(false);
OwningPtr<ExecutionEngine> EE2(EngineBuilder(M2).create());
EE2->DisableLazyCompilation(false);
// Call the `foo' function with no arguments:
std::vector<GenericValue> noargs;
GenericValue gv1 = EE1->runFunction(FooF1, noargs);
GenericValue gv2 = EE2->runFunction(FooF2, noargs);
// Import result of execution:
EXPECT_EQ(gv1.IntVal, 11);
EXPECT_EQ(gv2.IntVal, 12);
EE1->freeMachineCodeForFunction(FooF1);
EE2->freeMachineCodeForFunction(FooF2);
}
extern "C" {
extern void *getPointerToNamedFunction(const char *Name);
}
TEST(MultiJitTest, JitPool) {
LLVMContext Context1;
Module *M1 = 0;
Function *FooF1 = 0;
createModule1(Context1, M1, FooF1);
LLVMContext Context2;
Module *M2 = 0;
Function *FooF2 = 0;
createModule2(Context2, M2, FooF2);
// Now we create two JITs
OwningPtr<ExecutionEngine> EE1(EngineBuilder(M1).create());
OwningPtr<ExecutionEngine> EE2(EngineBuilder(M2).create());
Function *F1 = EE1->FindFunctionNamed("foo1");
void *foo1 = EE1->getPointerToFunction(F1);
Function *F2 = EE2->FindFunctionNamed("foo2");
void *foo2 = EE2->getPointerToFunction(F2);
// Function in M1
EXPECT_EQ(getPointerToNamedFunction("foo1"), foo1);
// Function in M2
EXPECT_EQ(getPointerToNamedFunction("foo2"), foo2);
// Symbol search
intptr_t
sa = (intptr_t)getPointerToNamedFunction("getPointerToNamedFunction");
EXPECT_TRUE(sa != 0);
intptr_t fa = (intptr_t)&getPointerToNamedFunction;
EXPECT_TRUE(fa != 0);
#ifdef __i386__
// getPointerToNamedFunction might be indirect jump on Win32 --enable-shared.
// FF 25 <disp32>: jmp *(pointer to IAT)
if (sa != fa && memcmp((char *)fa, "\xFF\x25", 2) == 0) {
fa = *(intptr_t *)(fa + 2); // Address to IAT
EXPECT_TRUE(fa != 0);
fa = *(intptr_t *)fa; // Bound value of IAT
}
#endif
EXPECT_TRUE(sa == fa);
}
#endif // !defined(__arm__)
} // anonymous namespace
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