[Bug tree-optimization/32705] [4.3 regression] ICE in set_ssa_val_to, at tree-ssa-sccvn.c:1022

Sat Jul 14 06:12:00 GMT 2007

------- 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.

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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=32705