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[Bug bootstrap/64676] [5.0 Regression] SEGV in tree-ssa-structalias.c solve_constraint
- From: "dje at gcc dot gnu.org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: Mon, 19 Jan 2015 21:49:49 +0000
- Subject: [Bug bootstrap/64676] [5.0 Regression] SEGV in tree-ssa-structalias.c solve_constraint
- Auto-submitted: auto-generated
- References: <bug-64676-4 at http dot gcc dot gnu dot org/bugzilla/>
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64676
--- Comment #5 from David Edelsohn <dje at gcc dot gnu.org> ---
This was caused by r219842
PR rtl-optimization/64081
* loop-iv.c (def_pred_latch_p): New function.
(latch_dominating_def): Allow specific cases with non-single
definitions.
(iv_get_reaching_def): Likewise.
(check_complex_exit_p): New function.
(check_simple_exit): Use check_complex_exit_p to allow certain cases
with exits not executing on any iteration.