One last tweak before we move onto the new world/branch.

From-SVN: r259404

gcc/gimple-ssa-warn-restrict.c

diff --git a/gcc/gimple-ssa-warn-restrict.c b/gcc/gimple-ssa-warn-restrict.c
index 8147972..e6466f3 100644
--- a/gcc/gimple-ssa-warn-restrict.c
+++ b/gcc/gimple-ssa-warn-restrict.c
@@ -308,11 +308,17 @@
   if (TREE_CODE (offset) == SSA_NAME)
     {
       wide_int min, max;
-      if (get_range_info (offset, &min, &max))
+      value_range_type rng = get_range_info_as_value_range (offset, &min, &max);
+      if (rng == VR_RANGE)
 	{
 	  offrange[0] += offset_int::from (min, SIGNED);
 	  offrange[1] += offset_int::from (max, SIGNED);
 	}
+      else if (rng == VR_ANTI_RANGE)
+	{
+	  offrange[0] += offset_int::from (max + 1, SIGNED);
+	  offrange[1] += offset_int::from (min - 1, SIGNED);
+	}
       else
 	{
 	  gimple *stmt = SSA_NAME_DEF_STMT (offset);