The following patch solves PR49800 which is described on
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49800.
The patch was successfully bootstrapped on x86/x86-64.
Committed as rev. 183843.
2012-02-02 Vladimir Makarov <vmaka...@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.
Index: haifa-sched.c
===================================================================
--- haifa-sched.c (revision 183839)
+++ haifa-sched.c (working copy)
@@ -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);
