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Re: How to extract types of variables and its uid?

On April 9, 2015 5:11:00 PM GMT+02:00, Swati Rathi <> wrote:
>I have enabled the LTO infrastructure using -flto -flto-partition=none.
>In the LTO infrastructure, when I try to print the TYPE_UID for the 
>types of variable var1 and var2, its different (as mentioned in my
>IStream *var1;
>IStream *var2;

Even there merging isn't guaranteed.


>On Thursday 09 April 2015 08:21 PM, Andrew Pinski wrote:
>> On Thu, Apr 9, 2015 at 10:40 PM, Swati Rathi
><> wrote:
>>> Even I am getting same uid's on small programs.
>>> I tried declaring variables across files also.
>>> But I am unable to replicate the problem on small programs.
>>> I am testing on SPEC CPU2006 benchmark suite, program - 453.povray
>>> Below is the information which is getting dumped using
>>> -fdump-tree-gimple-uid
>>> IStream has different uid's -> 5363, 5364, 11467 and 11521. In a
>file the
>>> uid is same.
>>> Can you suggest other experiments to identify the reason?
>> Yes UID are only the same compiling unit.  If you want to do some
>> analysis with types across units you should be using LTO
>> infrastructure.
>> Thanks,
>> Andrew

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