re PR tree-optimization/90930 (Excessive memory consumption)

2019-06-24  Richard Biener  <rguenther@suse.de>

	PR tree-optimization/90930
	PR tree-optimization/90316
	* tree-ssa-alias.c (walk_non_aliased_vuses): Add missing
	decrement of limit.

From-SVN: r272621

gcc/ChangeLog

+2019-06-24  Richard Biener  <rguenther@suse.de>
+
+	PR tree-optimization/90930
+	PR tree-optimization/90316
+	* tree-ssa-alias.c (walk_non_aliased_vuses): Add missing
+	decrement of limit.
+
 2019-06-24  Martin Sebor  <msebor@redhat.com>
 
 	* tree-pretty-print.h: Remove unnecessary punctuation characters

gcc/tree-ssa-alias.c

@@ -3135,6 +3135,7 @@ walk_non_aliased_vuses (ao_ref *ref, tree vuse,
 	      res = NULL;
 	      break;
 	    }
+	  --limit;
 	  if (stmt_may_clobber_ref_p_1 (def_stmt, ref))
 	    {
 	      if (!translate)