re PR tree-optimization/78496 (Missed opportunities for jump threading)

	PR tree-optimization/78496
	* tree-vrp.c (simplify_assert_expr_using_ranges): Remove debugging
	code.

From-SVN: r247722

gcc/ChangeLog

 2017-05-06  Jeff Law  <law@redhat.com>
 
 	PR tree-optimization/78496
+	* tree-vrp.c (simplify_assert_expr_using_ranges): Remove debugging
+	code.
+
+	PR tree-optimization/78496
 	* tree-vrp.c (simplify_assert_expr_using_ranges): New function.
 	(simplify_stmt_using_ranges): Call it.
 	(vrp_dom_walker::before_dom_children): Extract equivalences

gcc/tree-vrp.c

@@ -9608,7 +9608,6 @@ range_fits_type_p (value_range *vr, unsigned dest_precision, signop dest_sgn)
 static bool
 simplify_assert_expr_using_ranges (gimple *stmt)
 {
-  return false;
   tree cond = TREE_OPERAND (gimple_assign_rhs1 (stmt), 1);
   tree_code code = TREE_CODE (cond);
   tree op0 = TREE_OPERAND (cond, 0);