re PR other/58712 (issues found by --enable-checking=valgrind)

2013-11-12  Vladimir Makarov  <vmakarov@redhat.com>

	PR other/58712
	* ira-costs.c (record_operand_costs): Check operands number for
	the single set.

From-SVN: r204720

gcc/ChangeLog

+2013-11-12  Vladimir Makarov  <vmakarov@redhat.com>
+
+	PR other/58712
+	* ira-costs.c (record_operand_costs): Check operands number for
+	the single set.
+
 2013-11-12  Michael Meissner  <meissner@linux.vnet.ibm.com>
 
 	PR target/59054

gcc/ira-costs.c

@@ -1224,6 +1224,9 @@ record_operand_costs (rtx insn, enum reg_class *pref)
      preferred class is very expensive as the source of a copy
      instruction.  */
   if ((set = single_set (insn)) != NULL_RTX
+      /* In rare cases the single set insn might have less 2 operands
+	 as the source can be a fixed special reg.  */
+      && recog_data.n_operands > 1
       && ops[0] == SET_DEST (set) && ops[1] == SET_SRC (set))
     {
       int regno, other_regno;