re PR middle-end/79454 (c-c++-common/ubsan/overflow-vec-*.c FAILs on some 64-bit BE targets)

	PR middle-end/79454
	* internal-fn.c (expand_vector_ubsan_overflow): Use piece-wise
	result computation whenever lhs doesn't have vector mode, not
	just when it has BLKmode.

From-SVN: r245354

gcc/ChangeLog

+2017-02-11  Jakub Jelinek  <jakub@redhat.com>
+
+	PR middle-end/79454
+	* internal-fn.c (expand_vector_ubsan_overflow): Use piece-wise
+	result computation whenever lhs doesn't have vector mode, not
+	just when it has BLKmode.
+
 2017-02-10  Gerald Pfeifer  <gerald@pfeifer.com>
 
 	* doc/makefile.texi (profiledbootstrap): Refer to the

gcc/internal-fn.c

@@ -1909,7 +1909,7 @@ expand_vector_ubsan_overflow (location_t loc, enum tree_code code, tree lhs,
     {
       optab op;
       lhsr = expand_expr (lhs, NULL_RTX, VOIDmode, EXPAND_WRITE);
-      if (GET_MODE (lhsr) == BLKmode
+      if (!VECTOR_MODE_P (GET_MODE (lhsr))
 	  || (op = optab_for_tree_code (code, TREE_TYPE (arg0),
 					optab_default)) == unknown_optab
 	  || (optab_handler (op, TYPE_MODE (TREE_TYPE (arg0)))