[PATCH] Fix PR90930, alias oracle parts

[Richard Biener]

When improving oracle limits for PR90316 I missed one line when
cut&pasting from the adjustment in get_continuation_for_phi.

Bootstrapped and tested on x86_64-unknown-linux-gnu applied to
trunk and branch.

Richard.

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

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

Index: gcc/tree-ssa-alias.c
===================================================================
--- gcc/tree-ssa-alias.c        (revision 272283)
+++ gcc/tree-ssa-alias.c        (working copy)
@@ -3008,6 +3008,7 @@ walk_non_aliased_vuses (ao_ref *ref, tre
              res = NULL;
              break;
            }
+         --limit;
          if (stmt_may_clobber_ref_p_1 (def_stmt, ref))
            {
              if (!translate)