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[Bug tree-optimization/35607] [4.4 Regression] IVOPTs produces invalid gimple
- From: "rguenth at gcc dot gnu dot org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: 16 Mar 2008 12:23:14 -0000
- Subject: [Bug tree-optimization/35607] [4.4 Regression] IVOPTs produces invalid gimple
- References: <bug-35607-10053@http.gcc.gnu.org/bugzilla/>
- Reply-to: gcc-bugzilla at gcc dot gnu dot org
------- Comment #4 from rguenth at gcc dot gnu dot org 2008-03-16 12:23 -------
The concrete problem with allowing &foo[(int)z_4] in a PHI node argument is
that we cannot cope with immediate uses in PHI nodes and thus DCE z_4 and
end up with a reference to a deleted SSA_NAME during expansion (yeah, we
don't go out-of-SSA for it either). So this is a non-option.
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=35607