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[Bug tree-optimization/32705] [4.3 regression] ICE in set_ssa_val_to, at tree-ssa-sccvn.c:1022
- From: "ebotcazou at gcc dot gnu dot org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: 14 Jul 2007 06:12:12 -0000
- Subject: [Bug tree-optimization/32705] [4.3 regression] ICE in set_ssa_val_to, at tree-ssa-sccvn.c:1022
- References: <bug-32705-10053@http.gcc.gnu.org/bugzilla/>
- Reply-to: gcc-bugzilla at gcc dot gnu dot org
------- Comment #16 from ebotcazou at gcc dot gnu dot org 2007-07-14 06:12 -------
> Change the assert to allow to == VN_TOP.
> It can happen when we have aliasing issues, and we believe some piece
> of memory/a value to be truly undefined.
> This is what is happening in your case, and since your case is legal,
> we must allow it.
> It's likely a bug in the rest of the compiler, however, since we
> should almost *never* end up with bare NMT's like that.
OK, thanks.
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=32705