re PR tree-optimization/88069 (ICE in check_loop_closed_ssa_def, at tree-ssa-loop-manip.c:709)

2018-11-22  Richard Biener  <rguenther@suse.de>

	PR tree-optimization/88069
	* tree-ssa-sccvn.c (visit_phi): Tweak previous fix to not
	apply to default defs.

From-SVN: r266371

gcc/ChangeLog

+2018-11-22  Richard Biener  <rguenther@suse.de>
+
+	PR tree-optimization/88069
+	* tree-ssa-sccvn.c (visit_phi): Tweak previous fix to not
+	apply to default defs.
+
 2018-11-22  Jakub Jelinek  <jakub@redhat.com>
 
 	PR target/85644

gcc/tree-ssa-sccvn.c

@@ -4205,6 +4205,7 @@ visit_phi (gimple *phi, bool *inserted, bool backedges_varying_p)
 	 given that allows us to escape a region in alias walking.  */
       || (sameval
 	  && TREE_CODE (sameval) == SSA_NAME
+	  && !SSA_NAME_IS_DEFAULT_DEF (sameval)
 	  && SSA_NAME_IS_VIRTUAL_OPERAND (sameval)
 	  && (SSA_VAL (sameval, &visited_p), !visited_p)))
     /* Note this just drops to VARYING without inserting the PHI into