df-core.c (rest_of_handle_df_initialize): Use XCNEWVEC instead of XNEWVEC followed by memset.

	* df-core.c (rest_of_handle_df_initialize): Use XCNEWVEC instead
	of XNEWVEC followed by memset.
	(df_worklist_dataflow): Use XNEWVEC instead of xmalloc with a cast.

From-SVN: r197011

gcc/ChangeLog

 2013-03-23  Steven Bosscher  <steven@gcc.gnu.org>
 
+	* df-core.c (rest_of_handle_df_initialize): Use XCNEWVEC instead
+	of XNEWVEC followed by memset.
+	(df_worklist_dataflow): Use XNEWVEC instead of xmalloc with a cast.
+
+2013-03-23  Steven Bosscher  <steven@gcc.gnu.org>
+
 	* config/avr/avr.c, config/bfin/bfin.c, config/c6x/c6x.c,
 	config/epiphany/epiphany.c, config/frv/frv.c, config/ia64/ia64.c,
 	config/iq2000/iq2000.c, config/mcore/mcore.c, config/mep/mep.c,

gcc/df-core.c

@@ -727,9 +727,7 @@ rest_of_handle_df_initialize (void)
   df->n_blocks_inverted = inverted_post_order_compute (df->postorder_inverted);
   gcc_assert (df->n_blocks == df->n_blocks_inverted);
 
-  df->hard_regs_live_count = XNEWVEC (unsigned int, FIRST_PSEUDO_REGISTER);
-  memset (df->hard_regs_live_count, 0,
-	  sizeof (unsigned int) * FIRST_PSEUDO_REGISTER);
+  df->hard_regs_live_count = XCNEWVEC (unsigned int, FIRST_PSEUDO_REGISTER);
 
   df_hard_reg_init ();
   /* After reload, some ports add certain bits to regs_ever_live so
@@ -1074,8 +1072,7 @@ df_worklist_dataflow (struct dataflow *dataflow,
   gcc_assert (dir != DF_NONE);
 
   /* BBINDEX_TO_POSTORDER maps the bb->index to the reverse postorder.  */
-  bbindex_to_postorder =
-    (unsigned int *)xmalloc (last_basic_block * sizeof (unsigned int));
+  bbindex_to_postorder = XNEWVEC (unsigned int, last_basic_block);
 
   /* Initialize the array to an out-of-bound value.  */
   for (i = 0; i < last_basic_block; i++)