comparing variable of type parameter against null generates wrong code.

[adrianoc]

using System;
class C
{
    bool Test<T>(T value) => value != null;
}

generates a call to Object.op_Inequality()

//Parameters of 'bool Test<T>(T value) => value != null;'
var p_value_4 = new ParameterDefinition("value", ParameterAttributes.None, gp_T_2);
md_Test_1.Parameters.Add(p_value_4);
il_Test_3.Emit(OpCodes.Ldarg_1);
il_Test_3.Emit(OpCodes.Ldnull);
il_Test_3.Emit(OpCodes.Call, assembly.MainModule.ImportReference(TypeHelpers.ResolveMethod(typeof(System.Object), "op_Inequality",System.Reflection.BindingFlags.Default|System.Reflection.BindingFlags.Static|System.Reflection.BindingFlags.Public, "System.Object", "System.Object")));
il_Test_3.Emit(OpCodes.Ret);

instead of something like:

https://cutt.ly/IwuPByZ1

        IL_0000: ldarg.1
        IL_0001: box !!T
        IL_0006: ldnull
        IL_0007: cgt.un
        IL_0009: ret