[LRA] Don't count spilling cost for it offmemok

	* lra-constraints.c (process_alt_operands): Don't add spilling cost for
	"offmemok".

From-SVN: r238010

gcc/ChangeLog

+2016-07-05  Jiong Wang  <jiong.wang@arm.com>
+
+	* lra-constraints.c (process_alt_operands): Don't add spilling cost for
+	"offmemok".
+
 2016-07-05  Jan Hubicka  <jh@suse.cz>
 
 	* tree-scalar-evoluiton.c (simple_iv): Use nowrap_type to check if

gcc/lra-constraints.c

@@ -2488,7 +2488,9 @@ process_alt_operands (int only_alternative)
 
 		 Code below increases the reject for both pseudo and non-pseudo
 		 spill.  */
-	      if (no_regs_p && !(REG_P (op) && hard_regno[nop] < 0))
+	      if (no_regs_p
+		  && !(MEM_P (op) && offmemok)
+		  && !(REG_P (op) && hard_regno[nop] < 0))
 		{
 		  if (lra_dump_file != NULL)
 		    fprintf