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[Bug tree-optimization/33953] [4.3 regression] internal compiler error: vector VEC(tree,base) index domain error, in vectorizable_operation at tree-vect-transform.c:4017
- From: "irar at il dot ibm dot com" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: 31 Oct 2007 11:22:25 -0000
- Subject: [Bug tree-optimization/33953] [4.3 regression] internal compiler error: vector VEC(tree,base) index domain error, in vectorizable_operation at tree-vect-transform.c:4017
- References: <bug-33953-5606@http.gcc.gnu.org/bugzilla/>
- Reply-to: gcc-bugzilla at gcc dot gnu dot org
------- Comment #6 from irar at il dot ibm dot com 2007-10-31 11:22 -------
(In reply to comment #2)
> Uh, the VEC_* stuff used there looks like a mess. It's not clear who allocates
> and what the size should be.
I'll take a look and fix if necessary.
> For example vect_get_vec_defs_for_stmt_copy
> doesn't allocate the VECs which is exactly what causes the problem here.
vect_get_vec_defs_for_stmt_copy is not called here, it is used to create vector
copies in case of multiple types in the loop. It should reuse the VEC used for
the first copy. I think, there is indeed a problem here. We should overwrite
the existing entries and not push the new ones. I'll look into this.
>
> Reducing.
>
Thanks,
Ira
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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=33953