patch to fix a typo in ira.c

[Vladimir Makarov]

Xingxing Pan found a typo in IRA code.  Here is the patch to fix it.
The patch was bootstrapped on x86/x86-64.  I did not find code 
generation difference on x86/x86-64, s390, ppc, and arm on variety 
tests.   The code might make some small difference on other targets though.

Committed as rev. 201699.

2013-08-13  Vladimir Makarov  <vmaka...@redhat.com>

        * ira.c (setup_class_translate_array): Use aclass instead of cl
        for classes not fully covered by allocno classes.




Index: ira.c
===================================================================
--- ira.c       (revision 201544)
+++ ira.c       (working copy)
@@ -1111,8 +1111,8 @@ setup_class_translate_array (enum reg_cl
              min_cost = INT_MAX;
              for (mode = 0; mode < MAX_MACHINE_MODE; mode++)
                {
-                 cost = (ira_memory_move_cost[mode][cl][0]
-                         + ira_memory_move_cost[mode][cl][1]);
+                 cost = (ira_memory_move_cost[mode][aclass][0]
+                         + ira_memory_move_cost[mode][aclass][1]);
                  if (min_cost > cost)
                    min_cost = cost;
                }