* tree-ssa-loop-ivopts.c (get_address_cost): Use right mode for offset.

From-SVN: r220419

gcc/ChangeLog

+2015-02-04  Eric Botcazou  <ebotcazou@adacore.com>
+
+	* tree-ssa-loop-ivopts.c (get_address_cost): Use right mode for offset.
+
 2015-02-04  Jan Hubicka  <hubicka@ucw.cz>
 
 	PR middle-end/64922

gcc/tree-ssa-loop-ivopts.c

@@ -3324,12 +3324,12 @@ get_address_cost (bool symbol_present, bool var_present,
 	  XEXP (addr, 1) = gen_int_mode (off, address_mode);
 	  if (memory_address_addr_space_p (mem_mode, addr, as))
 	    break;
-	  /* For some TARGET, like ARM THUMB1, the offset should be nature
-	     aligned.  Try an aligned offset if address_mode is not QImode.  */
-	  off = (address_mode == QImode)
-		? 0
-		: ((unsigned HOST_WIDE_INT) 1 << i)
-		    - GET_MODE_SIZE (address_mode);
+	  /* For some strict-alignment targets, the offset must be naturally
+	     aligned.  Try an aligned offset if mem_mode is not QImode.  */
+	  off = mem_mode != QImode
+		? ((unsigned HOST_WIDE_INT) 1 << i)
+		    - GET_MODE_SIZE (mem_mode)
+		: 0;
 	  if (off > 0)
 	    {
 	      XEXP (addr, 1) = gen_int_mode (off, address_mode);