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This patch places class definitions in implementation files into anonymous namespaces to prevent weak vtables. This eliminates the need of providing an out-of-line definition to pin the vtable explicitly to the file. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@195092 91177308-0d34-0410-b5e6-96231b3b80d8
191 lines
6.1 KiB
C++
191 lines
6.1 KiB
C++
//===- MCJITTest.cpp - Unit tests for the MCJIT ---------------------------===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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//
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// This test suite verifies basic MCJIT functionality such as making function
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// calls, using global variables, and compiling multpile modules.
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//
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//===----------------------------------------------------------------------===//
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#include "llvm/ExecutionEngine/MCJIT.h"
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#include "MCJITTestBase.h"
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#include "gtest/gtest.h"
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using namespace llvm;
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namespace {
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class MCJITTest : public testing::Test, public MCJITTestBase {
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protected:
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virtual void SetUp() { M.reset(createEmptyModule("<main>")); }
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};
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// FIXME: Ensure creating an execution engine does not crash when constructed
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// with a null module.
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/*
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TEST_F(MCJITTest, null_module) {
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createJIT(0);
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}
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*/
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// FIXME: In order to JIT an empty module, there needs to be
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// an interface to ExecutionEngine that forces compilation but
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// does not require retrieval of a pointer to a function/global.
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/*
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TEST_F(MCJITTest, empty_module) {
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createJIT(M.take());
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//EXPECT_NE(0, TheJIT->getObjectImage())
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// << "Unable to generate executable loaded object image";
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}
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*/
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TEST_F(MCJITTest, global_variable) {
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SKIP_UNSUPPORTED_PLATFORM;
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int initialValue = 5;
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GlobalValue *Global = insertGlobalInt32(M.get(), "test_global", initialValue);
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createJIT(M.take());
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void *globalPtr = TheJIT->getPointerToGlobal(Global);
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EXPECT_TRUE(0 != globalPtr)
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<< "Unable to get pointer to global value from JIT";
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EXPECT_EQ(initialValue, *(int32_t*)globalPtr)
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<< "Unexpected initial value of global";
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}
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TEST_F(MCJITTest, add_function) {
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SKIP_UNSUPPORTED_PLATFORM;
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Function *F = insertAddFunction(M.get());
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createJIT(M.take());
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uint64_t addPtr = TheJIT->getFunctionAddress(F->getName().str());
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EXPECT_TRUE(0 != addPtr)
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<< "Unable to get pointer to function from JIT";
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ASSERT_TRUE(addPtr != 0) << "Unable to get pointer to function .";
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int (*AddPtr)(int, int) = (int(*)(int, int))addPtr ;
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EXPECT_EQ(0, AddPtr(0, 0));
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EXPECT_EQ(1, AddPtr(1, 0));
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EXPECT_EQ(3, AddPtr(1, 2));
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EXPECT_EQ(-5, AddPtr(-2, -3));
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EXPECT_EQ(30, AddPtr(10, 20));
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EXPECT_EQ(-30, AddPtr(-10, -20));
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EXPECT_EQ(-40, AddPtr(-10, -30));
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}
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TEST_F(MCJITTest, run_main) {
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SKIP_UNSUPPORTED_PLATFORM;
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int rc = 6;
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Function *Main = insertMainFunction(M.get(), 6);
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createJIT(M.take());
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uint64_t ptr = TheJIT->getFunctionAddress(Main->getName().str());
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EXPECT_TRUE(0 != ptr)
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<< "Unable to get pointer to main() from JIT";
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int (*FuncPtr)(void) = (int(*)(void))ptr;
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int returnCode = FuncPtr();
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EXPECT_EQ(returnCode, rc);
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}
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TEST_F(MCJITTest, return_global) {
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SKIP_UNSUPPORTED_PLATFORM;
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int32_t initialNum = 7;
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GlobalVariable *GV = insertGlobalInt32(M.get(), "myglob", initialNum);
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Function *ReturnGlobal = startFunction<int32_t(void)>(M.get(),
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"ReturnGlobal");
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Value *ReadGlobal = Builder.CreateLoad(GV);
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endFunctionWithRet(ReturnGlobal, ReadGlobal);
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createJIT(M.take());
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uint64_t rgvPtr = TheJIT->getFunctionAddress(ReturnGlobal->getName().str());
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EXPECT_TRUE(0 != rgvPtr);
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int32_t(*FuncPtr)(void) = (int32_t(*)(void))rgvPtr;
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EXPECT_EQ(initialNum, FuncPtr())
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<< "Invalid value for global returned from JITted function";
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}
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// FIXME: This case fails due to a bug with getPointerToGlobal().
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// The bug is due to MCJIT not having an implementation of getPointerToGlobal()
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// which results in falling back on the ExecutionEngine implementation that
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// allocates a new memory block for the global instead of using the same
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// global variable that is emitted by MCJIT. Hence, the pointer (gvPtr below)
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// has the correct initial value, but updates to the real global (accessed by
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// JITted code) are not propagated. Instead, getPointerToGlobal() should return
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// a pointer into the loaded ObjectImage to reference the emitted global.
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/*
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TEST_F(MCJITTest, increment_global) {
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SKIP_UNSUPPORTED_PLATFORM;
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int32_t initialNum = 5;
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Function *IncrementGlobal = startFunction<int32_t(void)>(M.get(), "IncrementGlobal");
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GlobalVariable *GV = insertGlobalInt32(M.get(), "my_global", initialNum);
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Value *DerefGV = Builder.CreateLoad(GV);
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Value *AddResult = Builder.CreateAdd(DerefGV,
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ConstantInt::get(Context, APInt(32, 1)));
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Builder.CreateStore(AddResult, GV);
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endFunctionWithRet(IncrementGlobal, AddResult);
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createJIT(M.take());
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void *gvPtr = TheJIT->getPointerToGlobal(GV);
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EXPECT_EQ(initialNum, *(int32_t*)gvPtr);
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void *vPtr = TheJIT->getFunctionAddress(IncrementGlobal->getName().str());
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EXPECT_TRUE(0 != vPtr)
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<< "Unable to get pointer to main() from JIT";
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int32_t(*FuncPtr)(void) = (int32_t(*)(void))(intptr_t)vPtr;
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for(int i = 1; i < 3; ++i) {
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int32_t result = FuncPtr();
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EXPECT_EQ(initialNum + i, result); // OK
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EXPECT_EQ(initialNum + i, *(int32_t*)gvPtr); // FAILS
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}
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}
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*/
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// PR16013: XFAIL this test on ARM, which currently can't handle multiple relocations.
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#if !defined(__arm__)
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TEST_F(MCJITTest, multiple_functions) {
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SKIP_UNSUPPORTED_PLATFORM;
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unsigned int numLevels = 23;
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int32_t innerRetVal= 5;
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Function *Inner = startFunction<int32_t(void)>(M.get(), "Inner");
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endFunctionWithRet(Inner, ConstantInt::get(Context, APInt(32, innerRetVal)));
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Function *Outer;
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for (unsigned int i = 0; i < numLevels; ++i) {
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std::stringstream funcName;
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funcName << "level_" << i;
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Outer = startFunction<int32_t(void)>(M.get(), funcName.str());
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Value *innerResult = Builder.CreateCall(Inner);
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endFunctionWithRet(Outer, innerResult);
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Inner = Outer;
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}
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createJIT(M.take());
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uint64_t ptr = TheJIT->getFunctionAddress(Outer->getName().str());
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EXPECT_TRUE(0 != ptr)
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<< "Unable to get pointer to outer function from JIT";
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int32_t(*FuncPtr)(void) = (int32_t(*)(void))ptr;
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EXPECT_EQ(innerRetVal, FuncPtr())
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<< "Incorrect result returned from function";
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}
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#endif /*!defined(__arm__)*/
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}
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