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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/Support/Host.h"
#include "MCJITTestAPICommon.h"
#include "gtest/gtest.h"
using namespace llvm;
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::arm);
SupportedArchs.push_back(Triple::mips);
SupportedArchs.push_back(Triple::x86);
SupportedArchs.push_back(Triple::x86_64);
// The operating systems below are known to be sufficiently incompatible
// that they will fail the MCJIT C API tests.
UnsupportedOSs.push_back(Triple::Cygwin);
}
};
TEST_F(MCJITCAPITest, simple_function) {
SKIP_UNSUPPORTED_PLATFORM;
char *error = 0;
// Creates a function that returns 42, compiles it, and runs it.
LLVMModuleRef module = LLVMModuleCreateWithName("simple_module");
LLVMValueRef 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);
LLVMMCJITCompilerOptions options;
LLVMInitializeMCJITCompilerOptions(&options, sizeof(options));
options.OptLevel = 2;
// Just ensure that this field still exists.
options.NoFramePointerElim = false;
LLVMExecutionEngineRef engine;
ASSERT_EQ(
0, LLVMCreateMCJITCompilerForModule(&engine, module, &options,
sizeof(options), &error));
LLVMPassManagerRef pass = LLVMCreatePassManager();
LLVMAddTargetData(LLVMGetExecutionEngineTargetData(engine), pass);
LLVMAddConstantPropagationPass(pass);
LLVMAddInstructionCombiningPass(pass);
LLVMRunPassManager(pass, module);
LLVMDisposePassManager(pass);
union {
void *raw;
int (*usable)();
} functionPointer;
functionPointer.raw = LLVMGetPointerToGlobal(engine, function);
EXPECT_EQ(42, functionPointer.usable());
LLVMDisposeExecutionEngine(engine);
}
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