This is the mail archive of the
gcc-bugs@gcc.gnu.org
mailing list for the GCC project.
[Bug tree-optimization/61980] ICE: in compute_affine_dependence, at tree-data-ref.c:4233 with -fcheck-data-deps
- From: "sabrinadfs at gmail dot com" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: Fri, 01 Aug 2014 11:21:25 +0000
- Subject: [Bug tree-optimization/61980] ICE: in compute_affine_dependence, at tree-data-ref.c:4233 with -fcheck-data-deps
- Auto-submitted: auto-generated
- References: <bug-61980-4 at http dot gcc dot gnu dot org/bugzilla/>
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61980
--- Comment #4 from Sabrina Souto <sabrinadfs at gmail dot com> ---
I don't have much experience with GCC, so I'm a bit confused with your 2
answers, please help me understanding what is happening: Based both on the
documentation and the results, I understood that the result from the dependency
analysis (Banerjee dist vectors: 0 1 , Omega dist vectors: 0) is wrong or not
expected, but this is due to the "unreliably" work of -fcheck-data-deps or,
since -fcheck-data-deps is used for debug, it is working well and this result
must be investigated?
(In reply to Richard Biener from comment #3)
> It's intended for debugging only:
>
> @item -fcheck-data-deps
> @opindex fcheck-data-deps
> Compare the results of several data dependence analyzers. This option
> is used for debugging the data dependence analyzers.