private Result OnFetchReturn()
{
var retn = _node.As <ReturnNode>();
_variableContext.ReturningList.Add(retn);
if (_functionDeclaration.ReturnCount != 0)
{
var ret = _functionDeclaration.GetReturn(0);
var retClass = ret.VariableType.GetRegisterClass();
_variableContext.Begin();
for (var i = 0; i < 2; i++)
{
var op = retn.Operands[i];
if (!op.IsVariable())
{
continue;
}
var vd = _compiler.GetVariableData(op.Id);
var va = _variableContext.Merge(vd, 0, 0);
if (retClass == vd.Info.RegisterClass)
{
// TODO: [COMPILER] Fix HLRet fetch.
va.Flags |= VariableFlags.RReg;
va.InRegs = i == 0 ? Utils.Mask(RegisterIndex.Ax) : Utils.Mask(RegisterIndex.Dx);
_variableContext.InRegs.Or(retClass, va.InRegs);
}
else if (retClass == RegisterClass.Fp)
{
var fldFlag = ret.VariableType == VariableType.Fp32 ? VariableFlags.X86Fld4 : VariableFlags.X86Fld8;
va.Flags |= VariableFlags.RMem | fldFlag;
}
else
{
// TODO: Fix possible other return type conversions.
}
}
_variableContext.End(_node);
}
if (_next.IsFetched())
{
return(Result.Break);
}
_unreachableList.Add(_next);
return(Result.NextGroup);
}