* exp_ch9.adb (Build_Lock_Free_Unprotected_Subprogram_Body):
Use of Known_Static_Esize instead of Known_Esize and
Known_Static_RM_Size instead of Known_RM_Size in order to
properly call UI_To_Int. Don't check the size of the component
type in case of generic.
* sem_ch9.adb (Allows_Lock_Free_Implementation):
Use of Known_Static_Esize instead of Known_Esize and
Known_Static_RM_Size instead of Known_RM_Size in order to properly
call UI_To_Int. Don't check the size of the component type in
case of generic.
* checks.adb (Discrete_Range_Cond): Do not try to optimize on
the assumption that the type of an expression can always fit in
the target type of a conversion.