re PR rtl-optimization/71673 (FAIL:…

re PR rtl-optimization/71673 (FAIL: c-c++-common/torture/builtin-arith-overflow-p-19.c -O2  (internal compiler error))

	PR rtl-optimization/71673
	* internal-fn.c (expand_arith_overflow_result_store): Use
	OPTAB_LIB_WIDEN instead of OPTAB_DIRECT as last argument to
	expand_simple_binop.

From-SVN: r237815

gcc/ChangeLog

 2016-06-28  Jakub Jelinek  <jakub@redhat.com>
 
+	PR rtl-optimization/71673
+	* internal-fn.c (expand_arith_overflow_result_store): Use
+	OPTAB_LIB_WIDEN instead of OPTAB_DIRECT as last argument to
+	expand_simple_binop.
+
 	PR middle-end/66867
 	* builtins.c (expand_ifn_atomic_compare_exchange_into_call,
 	expand_ifn_atomic_compare_exchange): New functions.

gcc/internal-fn.c

@@ -454,7 +454,7 @@ expand_arith_overflow_result_store (tree lhs, rtx target,
 	    = immed_wide_int_const (wi::shifted_mask (0, prec, false, tgtprec),
 				    tgtmode);
 	  lres = expand_simple_binop (tgtmode, AND, res, mask, NULL_RTX,
-				      true, OPTAB_DIRECT);
+				      true, OPTAB_LIB_WIDEN);
 	}
       else
 	{