/// <summary>
/// Gets whether arg can be un-inlined out of stmt.
/// </summary>
internal static bool CanUninline(ILInstruction arg, ILInstruction stmt)
{
Debug.Assert(arg.IsDescendantOf(stmt));
for (ILInstruction inst = arg; inst != stmt; inst = inst.Parent)
{
if (!inst.SlotInfo.CanInlineInto)
{
return(false);
}
// Check whether re-ordering with predecessors is valid:
int childIndex = inst.ChildIndex;
for (int i = 0; i < childIndex; ++i)
{
ILInstruction predecessor = inst.Parent.Children[i];
if (!SemanticHelper.MayReorder(arg, predecessor))
{
return(false);
}
}
}
return(true);
}
/// <summary>
/// Determines whether it is safe to move 'expressionBeingMoved' past 'expr'
/// </summary>
static bool IsSafeForInlineOver(ILInstruction expr, ILInstruction expressionBeingMoved)
{
return(SemanticHelper.MayReorder(expressionBeingMoved, expr));
}