How to extract types of variables and its uid?

[Richard Biener]

On Thu, Apr 9, 2015 at 11:57 AM, Swati Rathi <swatirathi@cse.iitb.ac.in> wrote:
>
> We want to store all the types associated with the class objects or pointer
> to a class in a program.
>
> Consider two variables var1 and var2 declared in different functions as
> below.
>     class IStream *var1;
>     class IStream *var2;
>
> We are extracting its type as below :
>     tree type1 = TREE_TYPE (TREE_TYPE (var1));
>     tree type2 = TREE_TYPE (TREE_TYPE (var2));
>
> TREE_CODE (type1) and TREE_CODE (type2) is RECORD_TYPE.
> We wish to record the type struct IStream.
>
> However, when we print TYPE_UID (type1) and TYPE_UID (type2), it is
> different.
>     TYPE_UID = 4326, tree_type : struct IStream
>     TYPE_UID = 7421, tree_type : struct IStream
>
> Using TYPE_UID (TYPE_MAIN_VARIANT (type1)) and TYPE_UID (TYPE_MAIN_VARIANT
> (type2)) also gives the same result.
>
> We wish to avoid duplicate entries of the same type.
> How to extract types and uid?

Doesn't it work with

class IStream;

IStream *var1;
IStream *var2;

?

> Regards,
> Swati
>