Do not use tree_to_wide_ref that point to a temporary (PR c++/90587).

2019-05-23  Martin Liska  <mliska@suse.cz>

	PR c++/90587
	* tree-ssa-uninit.c (value_sat_pred_p): The result of &
	operation points to a temporary (pointed via tree_to_wide_ref)
	that is out of scope after the &.

From-SVN: r271555

gcc/ChangeLog

+2019-05-23  Martin Liska  <mliska@suse.cz>
+
+	PR c++/90587
+	* tree-ssa-uninit.c (value_sat_pred_p): The result of &
+	operation points to a temporary (pointed via tree_to_wide_ref)
+	that is out of scope after the &.
+
 2019-05-23  Jonathan Wakely  <jwakely@redhat.com>
 
 	PR c++/90592

gcc/tree-ssa-uninit.c

@@ -1058,7 +1058,7 @@ value_sat_pred_p (tree val, tree boundary, enum tree_code cmpc,
   if (cmpc != BIT_AND_EXPR)
     return is_value_included_in (val, boundary, cmpc);
 
-  wi::tree_to_wide_ref andw = wi::to_wide (val) & wi::to_wide (boundary);
+  wide_int andw = wi::to_wide (val) & wi::to_wide (boundary);
   if (exact_p)
     return andw == wi::to_wide (val);
   else