protected override CompilerItem TranslateImpl(CompilerContext cc)
{
switch (_hintKind)
{
case VariableHintKind.Alloc:
cc.AllocVar(_varData, new RegisterMask(_hintValue), VariableAlloc.Read);
break;
case VariableHintKind.Spill:
if (_varData.State == VariableState.Register)
cc.SpillVar(_varData);
break;
case VariableHintKind.Save:
case VariableHintKind.SaveAndUnuse:
if (_varData.State == VariableState.Register && _varData.Changed)
{
cc.EmitSaveVar(_varData, _varData.RegisterIndex);
_varData.Changed = false;
}
if (_hintKind == VariableHintKind.SaveAndUnuse)
goto case VariableHintKind.Unuse;
break;
case VariableHintKind.Unuse:
cc.UnuseVar(_varData, VariableState.Unused);
goto end;
}
cc.UnuseVarOnEndOfScope(this, _varData);
end:
return Next;
}
