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//===- MCJITTest.cpp - Unit tests for the MCJIT ---------------------------===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// This test suite verifies basic MCJIT functionality when invoked form the C
// API.
//
//===----------------------------------------------------------------------===//
#include "llvm-c/Analysis.h"
#include "llvm-c/Core.h"
#include "llvm-c/ExecutionEngine.h"
#include "llvm-c/Target.h"
#include "llvm-c/Transforms/Scalar.h"
#include "llvm/ExecutionEngine/SectionMemoryManager.h"
#include "llvm/Support/Host.h"
#include "MCJITTestAPICommon.h"
#include "gtest/gtest.h"
using namespace llvm;
static bool didCallAllocateCodeSection;
static uint8_t *roundTripAllocateCodeSection(void *object, uintptr_t size,
unsigned alignment,
unsigned sectionID,
const char *sectionName) {
didCallAllocateCodeSection = true;
return static_cast<SectionMemoryManager*>(object)->allocateCodeSection(
size, alignment, sectionID, sectionName);
}
static uint8_t *roundTripAllocateDataSection(void *object, uintptr_t size,
unsigned alignment,
unsigned sectionID,
const char *sectionName,
LLVMBool isReadOnly) {
return static_cast<SectionMemoryManager*>(object)->allocateDataSection(
size, alignment, sectionID, sectionName, isReadOnly);
}
static LLVMBool roundTripFinalizeMemory(void *object, char **errMsg) {
std::string errMsgString;
bool result =
static_cast<SectionMemoryManager*>(object)->finalizeMemory(&errMsgString);
if (result) {
*errMsg = LLVMCreateMessage(errMsgString.c_str());
return 1;
}
return 0;
}
static void roundTripDestroy(void *object) {
delete static_cast<SectionMemoryManager*>(object);
}
class MCJITCAPITest : public testing::Test, public MCJITTestAPICommon {
protected:
MCJITCAPITest() {
// The architectures below are known to be compatible with MCJIT as they
// are copied from test/ExecutionEngine/MCJIT/lit.local.cfg and should be
// kept in sync.
SupportedArchs.push_back(Triple::aarch64);
SupportedArchs.push_back(Triple::arm);
SupportedArchs.push_back(Triple::mips);
SupportedArchs.push_back(Triple::x86);
SupportedArchs.push_back(Triple::x86_64);
// Some architectures have sub-architectures in which tests will fail, like
// ARM. These two vectors will define if they do have sub-archs (to avoid
// extra work for those who don't), and if so, if they are listed to work
HasSubArchs.push_back(Triple::arm);
SupportedSubArchs.push_back("armv6");
SupportedSubArchs.push_back("armv7");
// The operating systems below are known to be sufficiently incompatible
// that they will fail the MCJIT C API tests.
UnsupportedOSs.push_back(Triple::Cygwin);
}
virtual void SetUp();
virtual void TearDown() {
if (Engine)
LLVMDisposeExecutionEngine(Engine);
else if (Module)
LLVMDisposeModule(Module);
}
void buildSimpleFunction() {
Module = LLVMModuleCreateWithName("simple_module");
LLVMSetTarget(Module, HostTriple.c_str());
Function = LLVMAddFunction(
Module, "simple_function", LLVMFunctionType(LLVMInt32Type(), 0, 0, 0));
LLVMSetFunctionCallConv(Function, LLVMCCallConv);
LLVMBasicBlockRef entry = LLVMAppendBasicBlock(Function, "entry");
LLVMBuilderRef builder = LLVMCreateBuilder();
LLVMPositionBuilderAtEnd(builder, entry);
LLVMBuildRet(builder, LLVMConstInt(LLVMInt32Type(), 42, 0));
LLVMVerifyModule(Module, LLVMAbortProcessAction, &Error);
LLVMDisposeMessage(Error);
LLVMDisposeBuilder(builder);
}
void buildMCJITOptions() {
LLVMInitializeMCJITCompilerOptions(&Options, sizeof(Options));
Options.OptLevel = 2;
// Just ensure that this field still exists.
Options.NoFramePointerElim = false;
}
void useRoundTripSectionMemoryManager() {
Options.MCJMM = LLVMCreateSimpleMCJITMemoryManager(
new SectionMemoryManager(),
roundTripAllocateCodeSection,
roundTripAllocateDataSection,
roundTripFinalizeMemory,
roundTripDestroy);
}
void buildMCJITEngine() {
ASSERT_EQ(
0, LLVMCreateMCJITCompilerForModule(&Engine, Module, &Options,
sizeof(Options), &Error));
}
void buildAndRunPasses() {
LLVMPassManagerRef pass = LLVMCreatePassManager();
LLVMAddTargetData(LLVMGetExecutionEngineTargetData(Engine), pass);
LLVMAddConstantPropagationPass(pass);
LLVMAddInstructionCombiningPass(pass);
LLVMRunPassManager(pass, Module);
LLVMDisposePassManager(pass);
}
LLVMModuleRef Module;
LLVMValueRef Function;
LLVMMCJITCompilerOptions Options;
LLVMExecutionEngineRef Engine;
char *Error;
};
// Provide out-of-line definition to prevent weak vtable.
void MCJITCAPITest::SetUp() {
didCallAllocateCodeSection = false;
Module = 0;
Function = 0;
Engine = 0;
Error = 0;
}
TEST_F(MCJITCAPITest, simple_function) {
SKIP_UNSUPPORTED_PLATFORM;
buildSimpleFunction();
buildMCJITOptions();
buildMCJITEngine();
buildAndRunPasses();
union {
void *raw;
int (*usable)();
} functionPointer;
functionPointer.raw = LLVMGetPointerToGlobal(Engine, Function);
EXPECT_EQ(42, functionPointer.usable());
}
TEST_F(MCJITCAPITest, custom_memory_manager) {
SKIP_UNSUPPORTED_PLATFORM;
buildSimpleFunction();
buildMCJITOptions();
useRoundTripSectionMemoryManager();
buildMCJITEngine();
buildAndRunPasses();
union {
void *raw;
int (*usable)();
} functionPointer;
functionPointer.raw = LLVMGetPointerToGlobal(Engine, Function);
EXPECT_EQ(42, functionPointer.usable());
EXPECT_TRUE(didCallAllocateCodeSection);
}
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