Referencing properties/events on a value type loads the value type value instead of its address.

[adrianoc]

Since Span is a value type any method/property reference should go through the address of the variable instead of its value.

Test need to cover Span as:

• Local variables
• Parameters
• Fields

class C 
{ 
	static int M2(System.Span<int> span) => span.Length;
}

generates:

il_M_2.Emit(OpCodes.Ldarg_0);

instead of

il_M_2.Emit(OpCodes.Ldarga, p_span_3);