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//===- MCJITTestBase.h - Common base class for MCJIT Unit tests ----------===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// This class implements common functionality required by the MCJIT unit tests,
// as well as logic to skip tests on unsupported architectures and operating
// systems.
//
//===----------------------------------------------------------------------===//
#ifndef MCJIT_TEST_BASE_H
#define MCJIT_TEST_BASE_H
#include "llvm/Config/config.h"
#include "llvm/ExecutionEngine/ExecutionEngine.h"
#include "llvm/ExecutionEngine/SectionMemoryManager.h"
#include "llvm/IR/Function.h"
#include "llvm/IR/IRBuilder.h"
#include "llvm/IR/LLVMContext.h"
#include "llvm/IR/Module.h"
#include "llvm/IR/TypeBuilder.h"
#include "llvm/Support/CodeGen.h"
#include "MCJITTestAPICommon.h"
namespace llvm {
class MCJITTestBase : public MCJITTestAPICommon {
protected:
MCJITTestBase()
: OptLevel(CodeGenOpt::None)
, RelocModel(Reloc::Default)
, CodeModel(CodeModel::Default)
, MArch("")
, Builder(Context)
, MM(new SectionMemoryManager)
{
// 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 incompatible with MCJIT as
// they are copied from the test/ExecutionEngine/MCJIT/lit.local.cfg and
// should be kept in sync.
UnsupportedOSs.push_back(Triple::Cygwin);
UnsupportedOSs.push_back(Triple::Darwin);
}
Module *createEmptyModule(StringRef Name) {
Module * M = new Module(Name, Context);
M->setTargetTriple(Triple::normalize(HostTriple));
return M;
}
template<typename FuncType>
Function *startFunction(Module *M, StringRef Name) {
Function *Result = Function::Create(
TypeBuilder<FuncType, false>::get(Context),
GlobalValue::ExternalLinkage, Name, M);
BasicBlock *BB = BasicBlock::Create(Context, Name, Result);
Builder.SetInsertPoint(BB);
return Result;
}
void endFunctionWithRet(Function *Func, Value *RetValue) {
Builder.CreateRet(RetValue);
}
// Inserts a simple function that invokes Callee and takes the same arguments:
// int Caller(...) { return Callee(...); }
template<typename Signature>
Function *insertSimpleCallFunction(Module *M, Function *Callee) {
Function *Result = startFunction<Signature>(M, "caller");
SmallVector<Value*, 1> CallArgs;
Function::arg_iterator arg_iter = Result->arg_begin();
for(;arg_iter != Result->arg_end(); ++arg_iter)
CallArgs.push_back(arg_iter);
Value *ReturnCode = Builder.CreateCall(Callee, CallArgs);
Builder.CreateRet(ReturnCode);
return Result;
}
// Inserts a function named 'main' that returns a uint32_t:
// int32_t main() { return X; }
// where X is given by returnCode
Function *insertMainFunction(Module *M, uint32_t returnCode) {
Function *Result = startFunction<int32_t(void)>(M, "main");
Value *ReturnVal = ConstantInt::get(Context, APInt(32, returnCode));
endFunctionWithRet(Result, ReturnVal);
return Result;
}
// Inserts a function
// int32_t add(int32_t a, int32_t b) { return a + b; }
// in the current module and returns a pointer to it.
Function *insertAddFunction(Module *M, StringRef Name = "add") {
Function *Result = startFunction<int32_t(int32_t, int32_t)>(M, Name);
Function::arg_iterator args = Result->arg_begin();
Value *Arg1 = args;
Value *Arg2 = ++args;
Value *AddResult = Builder.CreateAdd(Arg1, Arg2);
endFunctionWithRet(Result, AddResult);
return Result;
}
// Inserts an declaration to a function defined elsewhere
Function *insertExternalReferenceToFunction(Module *M, StringRef Name,
FunctionType *FuncTy) {
Function *Result = Function::Create(FuncTy,
GlobalValue::ExternalLinkage,
Name, M);
return Result;
}
// Inserts an declaration to a function defined elsewhere
Function *insertExternalReferenceToFunction(Module *M, Function *Func) {
Function *Result = Function::Create(Func->getFunctionType(),
GlobalValue::AvailableExternallyLinkage,
Func->getName(), M);
return Result;
}
// Inserts a global variable of type int32
GlobalVariable *insertGlobalInt32(Module *M,
StringRef name,
int32_t InitialValue) {
Type *GlobalTy = TypeBuilder<types::i<32>, true>::get(Context);
Constant *IV = ConstantInt::get(Context, APInt(32, InitialValue));
GlobalVariable *Global = new GlobalVariable(*M,
GlobalTy,
false,
GlobalValue::ExternalLinkage,
IV,
name);
return Global;
}
void createJIT(Module *M) {
// Due to the EngineBuilder constructor, it is required to have a Module
// in order to construct an ExecutionEngine (i.e. MCJIT)
assert(M != 0 && "a non-null Module must be provided to create MCJIT");
EngineBuilder EB(M);
std::string Error;
TheJIT.reset(EB.setEngineKind(EngineKind::JIT)
.setUseMCJIT(true) /* can this be folded into the EngineKind enum? */
.setMCJITMemoryManager(MM)
.setErrorStr(&Error)
.setOptLevel(CodeGenOpt::None)
.setAllocateGVsWithCode(false) /*does this do anything?*/
.setCodeModel(CodeModel::JITDefault)
.setRelocationModel(Reloc::Default)
.setMArch(MArch)
.setMCPU(sys::getHostCPUName())
//.setMAttrs(MAttrs)
.create());
// At this point, we cannot modify the module any more.
assert(TheJIT.get() != NULL && "error creating MCJIT with EngineBuilder");
}
LLVMContext Context;
CodeGenOpt::Level OptLevel;
Reloc::Model RelocModel;
CodeModel::Model CodeModel;
StringRef MArch;
SmallVector<std::string, 1> MAttrs;
OwningPtr<TargetMachine> TM;
OwningPtr<ExecutionEngine> TheJIT;
IRBuilder<> Builder;
RTDyldMemoryManager *MM;
OwningPtr<Module> M;
};
} // namespace llvm
#endif // MCJIT_TEST_H
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