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f4ccd11075
This compiles with no changes to clang/lld/lldb with MSVC and includes overloads to various functions which are used by those projects and llvm which have OwningPtr's as parameters. This should allow out of tree projects some time to move. There are also no changes to libs/Target, which should help out of tree targets have time to move, if necessary. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@203083 91177308-0d34-0410-b5e6-96231b3b80d8
131 lines
4.6 KiB
C++
131 lines
4.6 KiB
C++
//===- ExecutionEngineTest.cpp - Unit tests for ExecutionEngine -----------===//
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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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#include "llvm/ExecutionEngine/Interpreter.h"
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#include "llvm/IR/DerivedTypes.h"
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#include "llvm/IR/GlobalVariable.h"
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#include "llvm/IR/LLVMContext.h"
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#include "llvm/IR/Module.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 ExecutionEngineTest : public testing::Test {
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protected:
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ExecutionEngineTest()
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: M(new Module("<main>", getGlobalContext())), Error(""),
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Engine(EngineBuilder(M).setErrorStr(&Error).create()) {
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}
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virtual void SetUp() {
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ASSERT_TRUE(Engine.get() != NULL) << "EngineBuilder returned error: '"
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<< Error << "'";
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}
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GlobalVariable *NewExtGlobal(Type *T, const Twine &Name) {
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return new GlobalVariable(*M, T, false, // Not constant.
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GlobalValue::ExternalLinkage, NULL, Name);
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}
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Module *const M;
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std::string Error;
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const std::unique_ptr<ExecutionEngine> Engine;
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};
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TEST_F(ExecutionEngineTest, ForwardGlobalMapping) {
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GlobalVariable *G1 =
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NewExtGlobal(Type::getInt32Ty(getGlobalContext()), "Global1");
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int32_t Mem1 = 3;
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Engine->addGlobalMapping(G1, &Mem1);
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EXPECT_EQ(&Mem1, Engine->getPointerToGlobalIfAvailable(G1));
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int32_t Mem2 = 4;
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Engine->updateGlobalMapping(G1, &Mem2);
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EXPECT_EQ(&Mem2, Engine->getPointerToGlobalIfAvailable(G1));
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Engine->updateGlobalMapping(G1, NULL);
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EXPECT_EQ(NULL, Engine->getPointerToGlobalIfAvailable(G1));
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Engine->updateGlobalMapping(G1, &Mem2);
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EXPECT_EQ(&Mem2, Engine->getPointerToGlobalIfAvailable(G1));
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GlobalVariable *G2 =
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NewExtGlobal(Type::getInt32Ty(getGlobalContext()), "Global1");
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EXPECT_EQ(NULL, Engine->getPointerToGlobalIfAvailable(G2))
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<< "The NULL return shouldn't depend on having called"
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<< " updateGlobalMapping(..., NULL)";
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// Check that update...() can be called before add...().
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Engine->updateGlobalMapping(G2, &Mem1);
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EXPECT_EQ(&Mem1, Engine->getPointerToGlobalIfAvailable(G2));
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EXPECT_EQ(&Mem2, Engine->getPointerToGlobalIfAvailable(G1))
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<< "A second mapping shouldn't affect the first.";
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}
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TEST_F(ExecutionEngineTest, ReverseGlobalMapping) {
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GlobalVariable *G1 =
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NewExtGlobal(Type::getInt32Ty(getGlobalContext()), "Global1");
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int32_t Mem1 = 3;
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Engine->addGlobalMapping(G1, &Mem1);
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EXPECT_EQ(G1, Engine->getGlobalValueAtAddress(&Mem1));
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int32_t Mem2 = 4;
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Engine->updateGlobalMapping(G1, &Mem2);
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EXPECT_EQ(NULL, Engine->getGlobalValueAtAddress(&Mem1));
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EXPECT_EQ(G1, Engine->getGlobalValueAtAddress(&Mem2));
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GlobalVariable *G2 =
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NewExtGlobal(Type::getInt32Ty(getGlobalContext()), "Global2");
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Engine->updateGlobalMapping(G2, &Mem1);
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EXPECT_EQ(G2, Engine->getGlobalValueAtAddress(&Mem1));
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EXPECT_EQ(G1, Engine->getGlobalValueAtAddress(&Mem2));
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Engine->updateGlobalMapping(G1, NULL);
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EXPECT_EQ(G2, Engine->getGlobalValueAtAddress(&Mem1))
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<< "Removing one mapping doesn't affect a different one.";
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EXPECT_EQ(NULL, Engine->getGlobalValueAtAddress(&Mem2));
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Engine->updateGlobalMapping(G2, &Mem2);
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EXPECT_EQ(NULL, Engine->getGlobalValueAtAddress(&Mem1));
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EXPECT_EQ(G2, Engine->getGlobalValueAtAddress(&Mem2))
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<< "Once a mapping is removed, we can point another GV at the"
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<< " now-free address.";
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}
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TEST_F(ExecutionEngineTest, ClearModuleMappings) {
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GlobalVariable *G1 =
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NewExtGlobal(Type::getInt32Ty(getGlobalContext()), "Global1");
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int32_t Mem1 = 3;
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Engine->addGlobalMapping(G1, &Mem1);
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EXPECT_EQ(G1, Engine->getGlobalValueAtAddress(&Mem1));
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Engine->clearGlobalMappingsFromModule(M);
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EXPECT_EQ(NULL, Engine->getGlobalValueAtAddress(&Mem1));
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GlobalVariable *G2 =
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NewExtGlobal(Type::getInt32Ty(getGlobalContext()), "Global2");
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// After clearing the module mappings, we can assign a new GV to the
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// same address.
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Engine->addGlobalMapping(G2, &Mem1);
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EXPECT_EQ(G2, Engine->getGlobalValueAtAddress(&Mem1));
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}
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TEST_F(ExecutionEngineTest, DestructionRemovesGlobalMapping) {
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GlobalVariable *G1 =
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NewExtGlobal(Type::getInt32Ty(getGlobalContext()), "Global1");
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int32_t Mem1 = 3;
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Engine->addGlobalMapping(G1, &Mem1);
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// Make sure the reverse mapping is enabled.
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EXPECT_EQ(G1, Engine->getGlobalValueAtAddress(&Mem1));
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// When the GV goes away, the ExecutionEngine should remove any
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// mappings that refer to it.
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G1->eraseFromParent();
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EXPECT_EQ(NULL, Engine->getGlobalValueAtAddress(&Mem1));
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}
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}
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