This is the mail archive of the gcc@gcc.gnu.org mailing list for the GCC project.


Index Nav: [Date Index] [Subject Index] [Author Index] [Thread Index]
Message Nav: [Date Prev] [Date Next] [Thread Prev] [Thread Next]
Other format: [Raw text]

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


Is there a plan of merging type uid's?

Also, is there is a global store maintaining all the types used in a program? Or is there any other unique feature to distinguish between two tree types, other than type uid?


On Thursday 09 April 2015 09:47 PM, Richard Biener wrote:
On April 9, 2015 5:11:00 PM GMT+02:00, Swati Rathi<swatirathi@cse.iitb.ac.in>  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
first
post).

IStream *var1;
IStream *var2;
Even there merging isn't guaranteed.

Richard.

On Thursday 09 April 2015 08:21 PM, Andrew Pinski wrote:
On Thu, Apr 9, 2015 at 10:40 PM, Swati Rathi
<swatirathi@cse.iitb.ac.in>  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


Index Nav: [Date Index] [Subject Index] [Author Index] [Thread Index]
Message Nav: [Date Prev] [Date Next] [Thread Prev] [Thread Next]