private LLVMValueRef BuildInitializeStateFunction(IEnumerable <LLVMTypeRef> parameterTypes)
{
LLVMTypeRef initializeStateFunctionType = LLVMTypeRef.FunctionType(
SharedData.Context.VoidPointerType(),
parameterTypes.ToArray(),
false);
LLVMValueRef initializeStateFunction = Module.AddFunction(FunctionNames.GetInitializeStateFunctionName(_functionName), initializeStateFunctionType);
var builder = SharedData.Context.CreateIRBuilder();
LLVMBasicBlockRef entryBlock = initializeStateFunction.AppendBasicBlock("entry");
builder.PositionBuilderAtEnd(entryBlock);
LLVMValueRef statePtr = SharedData.ModuleContext.CreateMalloc(builder, SharedData.AllocationSet.StateType, "statePtr");
CurrentState = new OuterFunctionCompilerState(initializeStateFunction, builder)
{
StateMalloc = statePtr
};
GenerateStoreCompletionState(RuntimeConstants.FunctionNotDoneStatus);
InitializeParameterAllocations(initializeStateFunction, builder);
LLVMValueRef bitCastStatePtr = builder.CreateBitCast(statePtr, SharedData.Context.VoidPointerType(), "bitCastStatePtr");
builder.CreateRet(bitCastStatePtr);
return(initializeStateFunction);
}
private LLVMValueRef BuildPollFunction()
{
LLVMValueRef pollFunction = Module.AddFunction(FunctionNames.GetPollFunctionName(_functionName), PollFunctionType(SharedData.Context));
LLVMBasicBlockRef entryBlock = pollFunction.AppendBasicBlock("entry");
var builder = SharedData.Context.CreateIRBuilder();
var outerFunctionCompilerState = new OuterFunctionCompilerState(pollFunction, builder);
CurrentState = outerFunctionCompilerState;
builder.PositionBuilderAtEnd(entryBlock);
LLVMValueRef stateVoidPtr = pollFunction.GetParam(0u),
statePtr = builder.CreateBitCast(stateVoidPtr, LLVMTypeRef.PointerType(SharedData.AllocationSet.StateType, 0u), "statePtr");
outerFunctionCompilerState.StateMalloc = statePtr;
// store the caller waker in the state
// TODO: create constants for these positions
LLVMValueRef waker = builder.BuildStructValue(
SharedData.Context.WakerType(),
new LLVMValueRef[] { pollFunction.GetParam(1u), pollFunction.GetParam(2u) },
"callerWaker");
builder.CreateStore(waker, builder.CreateStructGEP(statePtr, 1u, "callerWakerPtr"));
// set initial fire counts
foreach (AsyncStateGroupData groupData in AsyncStateGroups.Values)
{
groupData.CreateFireCountReset(builder);
}
// schedule initial group(s)
CreateScheduleCallsForAsyncStateGroups(
builder,
statePtr,
AsyncStateGroups.Keys.Where(group => !group.Predecessors.Any()));
builder.CreateRetVoid();
return(pollFunction);
}