re PR middle-end/52463 (libitm.c/memcpy-1.c FAILs)

        PR middle-end/52463
        * trans-mem.c (tm_region_init): Use last_basic_block.

From-SVN: r184949

gcc/ChangeLog

+2012-03-05  Aldy Hernandez  <aldyh@redhat.com>
+
+	PR middle-end/52463
+	* trans-mem.c (tm_region_init): Use last_basic_block.
+
 2012-03-05  Richard Henderson  <rth@redhat.com>
 
 	PR target/52481

gcc/trans-mem.c

@@ -1868,7 +1868,7 @@ tm_region_init (struct tm_region *region)
      using bb->aux.  */
   region_worklist =
     (struct tm_region **) xcalloc (sizeof (struct tm_region *),
-				  n_basic_blocks + NUM_FIXED_BLOCKS + 2);
+				  last_basic_block + NUM_FIXED_BLOCKS);
 
   VEC_safe_push (basic_block, heap, queue, bb);
   region_worklist[bb->index] = region;