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[Bug tree-optimization/81744] [8 Regression] ICE: verify_ssa failed, at tree-ssa.c:1186
- From: "amker at gcc dot gnu.org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: Mon, 07 Aug 2017 10:10:02 +0000
- Subject: [Bug tree-optimization/81744] [8 Regression] ICE: verify_ssa failed, at tree-ssa.c:1186
- Auto-submitted: auto-generated
- References: <bug-81744-4@http.gcc.gnu.org/bugzilla/>
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=81744
--- Comment #4 from amker at gcc dot gnu.org ---
So with below code in prepare_finalizers_chain:
tree fini, niters = number_of_latch_executions (loop);
//...
niters = copy_node (niters);
niters = force_gimple_operand (niters, &stmts, true, NULL);
Even with copy_node, the old niters (which is loop->nb_iterations is changed by
the call to force_gimple_operand. The code expects every time function
prepare_finalizers_chain is callsed, the niters/loop->nb_iterations stays in
the same. What should I do that? Thanks.