re PR rtl-optimization/49800 (segfault with -fsched-pressure -fdump-rtl-sched1)

2012-02-02  Vladimir Makarov  <vmakarov@redhat.com>

	PR rtl-optimization/49800
	* haifa-sched.c (sched_init): Call regstat_init_n_sets_and_refs.
	(sched_finish): Call regstat_free_n_sets_and_refs.

From-SVN: r183843

gcc/ChangeLog

+2012-02-02  Vladimir Makarov  <vmakarov@redhat.com>
+
+	PR rtl-optimization/49800
+	* haifa-sched.c (sched_init): Call regstat_init_n_sets_and_refs.
+	(sched_finish): Call regstat_free_n_sets_and_refs.
+
 2012-02-02  Jia Liu  <proljc@gmail.com>
 
 	* config/mips/mips-dspr2.md (mips_prepend): Mask operand 3 rather

gcc/haifa-sched.c

@@ -4835,6 +4835,10 @@ sched_init (void)
     {
       int i, max_regno = max_reg_num ();
 
+      if (sched_dump != NULL)
+	/* We need info about pseudos for rtl dumps about pseudo
+	   classes and costs.  */
+	regstat_init_n_sets_and_refs ();
       ira_set_pseudo_classes (sched_verbose ? sched_dump : NULL);
       sched_regno_pressure_class
 	= (enum reg_class *) xmalloc (max_regno * sizeof (enum reg_class));
@@ -4946,6 +4950,8 @@ sched_finish (void)
   haifa_finish_h_i_d ();
   if (sched_pressure_p)
     {
+      if (regstat_n_sets_and_refs != NULL)
+	regstat_free_n_sets_and_refs ();
       free (sched_regno_pressure_class);
       BITMAP_FREE (region_ref_regs);
       BITMAP_FREE (saved_reg_live);