rs6000.c (rs6000_va_start): Use MIN_UNITS_PER_WORD instead of UNITS_PER_WORD to…

rs6000.c (rs6000_va_start): Use MIN_UNITS_PER_WORD instead of UNITS_PER_WORD to describe the size of stack...

	* config/rs6000/rs6000.c (rs6000_va_start): Use MIN_UNITS_PER_WORD
	instead of UNITS_PER_WORD to describe the size of stack slots.

From-SVN: r219752

gcc/ChangeLog

 2015-01-16  Segher Boessenkool  <segher@kernel.crashing.org>
 
+	* config/rs6000/rs6000.c (rs6000_va_start): Use MIN_UNITS_PER_WORD
+	instead of UNITS_PER_WORD to describe the size of stack slots.
+
+2015-01-16  Segher Boessenkool  <segher@kernel.crashing.org>
+
 	* config/rs6000/rs6000.c (TARGET_PROMOTE_FUNCTION_MODE): Implement
 	as rs6000_promote_function_mode.  Move comment to there.
 	(rs6000_promote_function_mode): New function.

gcc/config/rs6000/rs6000.c

@@ -11239,7 +11239,7 @@ rs6000_va_start (tree valist, rtx nextarg)
   /* Find the overflow area.  */
   t = make_tree (TREE_TYPE (ovf), virtual_incoming_args_rtx);
   if (words != 0)
-    t = fold_build_pointer_plus_hwi (t, words * UNITS_PER_WORD);
+    t = fold_build_pointer_plus_hwi (t, words * MIN_UNITS_PER_WORD);
   t = build2 (MODIFY_EXPR, TREE_TYPE (ovf), ovf, t);
   TREE_SIDE_EFFECTS (t) = 1;
   expand_expr (t, const0_rtx, VOIDmode, EXPAND_NORMAL);