lra-constraints.c (choose_split_class): Add ATTRIBUTE_UNUSED to hard_reg_class.

        * lra-constraints.c (choose_split_class): Add ATTRIBUTE_UNUSED to
        hard_reg_class.

From-SVN: r193012

gcc/ChangeLog

+2012-10-31  Joern Rennecke  <joern.rennecke@embecosm.com>
+
+	* lra-constraints.c (choose_split_class): Add ATTRIBUTE_UNUSED to
+	hard_reg_class.
+
 2012-10-30  Alexandre Oliva <aoliva@redhat.com>
 
 	PR debug/54551

gcc/lra-constraints.c

@@ -3852,7 +3852,8 @@ choose_split_class (enum reg_class allocno_class,
 #else
   int i;
   enum reg_class cl, best_cl = NO_REGS;
-  enum reg_class hard_reg_class = REGNO_REG_CLASS (hard_regno);
+  enum reg_class hard_reg_class ATTRIBUTE_UNUSED
+    = REGNO_REG_CLASS (hard_regno);
 
   if (! SECONDARY_MEMORY_NEEDED (allocno_class, allocno_class, mode)
       && TEST_HARD_REG_BIT (reg_class_contents[allocno_class], hard_regno))