/// <summary>
/// Compiles an IL assembly to LLVM bytecode.
/// </summary>
/// <param name="moduleName">The module name.</param>
public void Compile(string moduleName)
{
Stopwatch stopWatch = new Stopwatch();
stopWatch.Start();
// Create LLVM module and its context.
LLVM.EnablePrettyStackTrace();
mModule = LLVM.ModuleCreateWithName(moduleName);
mContext = LLVM.GetModuleContext(mModule);
// Targets.
LLVM.InitializeAllTargetInfos();
LLVM.InitializeAllTargets();
LLVM.InitializeAllTargetMCs();
LLVM.InitializeAllAsmParsers();
LLVM.InitializeAllAsmPrinters();
string triplet = (Options.Target == "default") ? LLVM.GetDefaultTargetTriple() : Options.Target;
MyString error = new MyString();
LLVM.SetTarget(mModule, triplet);
TargetRef target;
if (LLVM.GetTargetFromTriple(triplet, out target, error))
{
throw new InvalidOperationException(error.ToString());
}
// Optimizer.
mFunctionPassManager = LLVM.CreateFunctionPassManagerForModule(mModule);
mPassManager = LLVM.CreatePassManager();
LLVM.InitializeFunctionPassManager(mFunctionPassManager);
#if !DEBUG
// O0
if (Options.Optimization >= OptimizationLevel.O0)
{
// Function passes.
LLVM.AddPromoteMemoryToRegisterPass(mFunctionPassManager);
LLVM.AddConstantPropagationPass(mFunctionPassManager);
LLVM.AddReassociatePass(mFunctionPassManager);
LLVM.AddInstructionCombiningPass(mFunctionPassManager);
// Module passes.
LLVM.AddAlwaysInlinerPass(mPassManager);
LLVM.AddStripDeadPrototypesPass(mPassManager);
LLVM.AddStripSymbolsPass(mPassManager);
}
// O1
if (Options.Optimization >= OptimizationLevel.O1)
{
// Function passes.
LLVM.AddLowerExpectIntrinsicPass(mFunctionPassManager);
LLVM.AddEarlyCSEPass(mFunctionPassManager);
LLVM.AddLoopRotatePass(mFunctionPassManager);
LLVM.AddLoopUnswitchPass(mFunctionPassManager);
LLVM.AddLoopUnrollPass(mFunctionPassManager);
LLVM.AddLoopDeletionPass(mFunctionPassManager);
LLVM.AddTailCallEliminationPass(mFunctionPassManager);
LLVM.AddGVNPass(mFunctionPassManager);
LLVM.AddDeadStoreEliminationPass(mFunctionPassManager);
LLVM.AddJumpThreadingPass(mFunctionPassManager);
LLVM.AddCFGSimplificationPass(mFunctionPassManager);
LLVM.AddMemCpyOptPass(mFunctionPassManager);
// Module passes.
LLVM.AddDeadArgEliminationPass(mPassManager);
LLVM.AddAggressiveDCEPass(mFunctionPassManager);
}
// O2
if (Options.Optimization >= OptimizationLevel.O2)
{
// Function passes.
LLVM.AddLoopVectorizePass(mFunctionPassManager);
LLVM.AddSLPVectorizePass(mFunctionPassManager);
// Module passes.
LLVM.AddFunctionInliningPass(mPassManager);
LLVM.AddConstantMergePass(mPassManager);
LLVM.AddArgumentPromotionPass(mPassManager);
}
#endif
// Initialize types and runtime.
string dataLayout = LLVM.GetDataLayout(Module);
TargetData = LLVM.CreateTargetData(dataLayout);
TypeHelper.Init(TargetData, this);
RuntimeHelper.ImportFunctions(Module);
mBuiltinCompiler.Compile();
compileModules();
LLVM.RunPassManager(mPassManager, Module);
// Log time.
stopWatch.Stop();
Logger.LogDetail("Compilation time: " + stopWatch.Elapsed);
// Debug: print LLVM assembly code.
#if DEBUG
Console.WriteLine(LLVM.PrintModuleToString(mModule));
#endif
// Verify and throw exception on error.
Console.ForegroundColor = ConsoleColor.DarkGray;
if (LLVM.VerifyModule(mModule, VerifierFailureAction.ReturnStatusAction, error))
{
Logger.LogError("Compilation of module failed.");
Logger.LogInfo(error.ToString());
LLVM.DisposeTargetData(TargetData);
return;
}
else
{
Logger.LogDetail("Compilation of module succeeded.");
}
// Output assembly or object file.
if (!Options.OutputLLVMIR && !Options.OutputLLVMBitCode)
{
TargetMachineRef machine = LLVM.CreateTargetMachine(target, triplet, "generic", "", CodeGenOptLevel.CodeGenLevelDefault, RelocMode.RelocDefault, CodeModel.CodeModelDefault);
LLVM.SetModuleDataLayout(mModule, LLVM.CreateTargetDataLayout(machine));
CodeGenFileType type = (Options.OutputAssembly) ? CodeGenFileType.AssemblyFile : CodeGenFileType.ObjectFile;
if (LLVM.TargetMachineEmitToFile(machine, mModule, Options.OutputFile, type, error))
{
throw new InvalidOperationException(error.ToString());
}
}
// Output LLVM IR code to a file.
else if (Options.OutputLLVMIR)
{
if (LLVM.PrintModuleToFile(mModule, Options.OutputFile, error))
{
Logger.LogError("Writing the LLVM code to a file failed.");
Logger.LogInfo(error.ToString());
}
}
// Output LLVM bitcode.
else if (Options.OutputLLVMBitCode)
{
if (LLVM.WriteBitcodeToFile(mModule, Options.OutputFile) != 0)
{
Logger.LogError("Writing the LLVM code to a file failed.");
Logger.LogInfo(error.ToString());
}
}
// Cleanup.
LLVM.DisposeTargetData(TargetData);
}
public void AddDeadStoreEliminationPass() => LLVM.AddDeadStoreEliminationPass(this.Unwrap());
public void Compile()
{
string triple = "x86_64-pc-linux-gnu";
LLVM.InitializeX86TargetInfo();
LLVM.InitializeX86Target();
LLVM.InitializeX86TargetMC();
LLVM.InitializeX86AsmParser();
LLVM.InitializeX86AsmPrinter();
LLVM.SetTarget(ModuleRef, triple);
var fnPassManager = LLVM.CreateFunctionPassManagerForModule(ModuleRef);
var modulePassManager = LLVM.CreatePassManager();
LLVM.InitializeFunctionPassManager(fnPassManager);
// Optimizations
LLVM.AddPromoteMemoryToRegisterPass(fnPassManager);
LLVM.AddInstructionCombiningPass(fnPassManager);
LLVM.AddJumpThreadingPass(fnPassManager);
LLVM.AddEarlyCSEPass(fnPassManager);
LLVM.AddConstantPropagationPass(fnPassManager);
LLVM.AddCFGSimplificationPass(fnPassManager);
LLVM.AddReassociatePass(fnPassManager);
LLVM.AddLoopUnrollPass(fnPassManager);
LLVM.AddLoopRerollPass(fnPassManager);
LLVM.AddLoopDeletionPass(fnPassManager);
LLVM.AddLoopRotatePass(fnPassManager);
LLVM.AddLoopIdiomPass(fnPassManager);
LLVM.AddLoopUnswitchPass(fnPassManager);
LLVM.AddDeadStoreEliminationPass(fnPassManager);
LLVM.AddBasicAliasAnalysisPass(fnPassManager);
LLVM.AddIndVarSimplifyPass(fnPassManager);
LLVM.AddSCCPPass(fnPassManager);
LLVM.AddLICMPass(fnPassManager);
LLVM.AddCorrelatedValuePropagationPass(fnPassManager);
LLVM.AddScopedNoAliasAAPass(modulePassManager);
LLVM.AddDeadArgEliminationPass(modulePassManager);
LLVM.AddTailCallEliminationPass(modulePassManager);
LLVM.AddLoopUnswitchPass(modulePassManager);
LLVM.AddIPSCCPPass(modulePassManager);
LLVM.AddReassociatePass(modulePassManager);
LLVM.AddAlwaysInlinerPass(modulePassManager);
// O2
LLVM.AddNewGVNPass(fnPassManager);
LLVM.AddLowerExpectIntrinsicPass(fnPassManager);
LLVM.AddScalarReplAggregatesPassSSA(fnPassManager);
LLVM.AddMergedLoadStoreMotionPass(fnPassManager);
LLVM.AddSLPVectorizePass(fnPassManager);
LLVM.AddConstantMergePass(modulePassManager);
LLVM.AddConstantMergePass(modulePassManager);
LLVM.AddFunctionInliningPass(modulePassManager);
void RecurseTypes(Collection <TypeDefinition> collection, Action <TypeDefinition> callback)
{
foreach (TypeDefinition typeDef in collection)
{
callback(typeDef);
RecurseTypes(typeDef.NestedTypes, callback);
}
}
// First, declare all types and only define the types in a later pass.
// The reason is that we may have cycles of types.
var typeList = new List <TypeDefinition>();
foreach (ModuleDefinition moduleDef in assemblyDefinition.Modules)
{
RecurseTypes(moduleDef.Types, typeDef =>
{
typeList.Add(typeDef);
TypeLookup.DeclareType(typeDef);
});
}
// Now, we have all types, so we can declare the methods.
// Again, we may have cycles so the methods are declared and defined in separate passes.
// Also define the types now.
var methodCompilerLookup = new Dictionary <MethodDefinition, MethodCompiler>();
foreach (var typeDef in typeList)
{
TypeLookup.DefineType(typeDef);
StaticFieldLookup.DeclareFieldsFor(typeDef);
foreach (MethodDefinition methodDef in typeDef.Methods)
{
methodCompilerLookup.Add(methodDef, new MethodCompiler(this, methodDef));
}
}
// Compile the methods.
Action <TypeDefinition> methodCompilationFn = typeDef =>
{
foreach (MethodDefinition methodDef in typeDef.Methods)
{
var methodCompiler = methodCompilerLookup[methodDef];
methodCompiler.Compile();
if (!LLVM.VerifyFunction(methodCompiler.FunctionValueRef, LLVMVerifierFailureAction.LLVMPrintMessageAction))
{
LLVM.RunFunctionPassManager(fnPassManager, methodCompiler.FunctionValueRef);
}
}
};
if (LLVM.StartMultithreaded())
{
Parallel.ForEach(typeList, methodCompilationFn);
}
else
{
typeList.ForEach(methodCompilationFn);
}
// Free memory already.
MethodLookup.Finish();
methodCompilerLookup.Clear();
Console.WriteLine("-------------------");
if (LLVM.VerifyModule(ModuleRef, LLVMVerifierFailureAction.LLVMPrintMessageAction, out var outMsg))
{
Console.WriteLine(outMsg);
}
LLVM.RunPassManager(modulePassManager, ModuleRef);
// Cleanup
LLVM.DisposePassManager(modulePassManager);
LLVM.DumpModule(ModuleRef);
// XXX
string errorMsg;
LLVMTargetRef targetRef;
if (LLVM.GetTargetFromTriple(triple, out targetRef, out errorMsg))
{
Console.WriteLine(errorMsg);
}
LLVMTargetMachineRef machineRef = LLVM.CreateTargetMachine(targetRef, triple, "generic", "", LLVMCodeGenOptLevel.LLVMCodeGenLevelDefault, LLVMRelocMode.LLVMRelocDefault, LLVMCodeModel.LLVMCodeModelDefault);
System.IO.File.Delete("test.s");
if (LLVM.TargetMachineEmitToFile(machineRef, ModuleRef, Marshal.StringToHGlobalAnsi("test.s"), LLVMCodeGenFileType.LLVMAssemblyFile, out errorMsg))
{
Console.WriteLine(errorMsg);
}
Console.WriteLine("written");
LLVM.DisposeTargetMachine(machineRef);
}