re PR ipa/65521 (nondeterministic -fcompare-debug failures)

	PR ipa/65521
	* ipa-icf.c (sem_item::update_hash_by_addr_refs): Hash
	ultimate_alias_target ()->order ints instead of
	ultimate_alias_target () pointers.

	* gcc.dg/pr65521.c: New test.

From-SVN: r221596

gcc/ChangeLog

+2014-03-23  Jakub Jelinek  <jakub@redhat.com>
+
+	PR ipa/65521
+	* ipa-icf.c (sem_item::update_hash_by_addr_refs): Hash
+	ultimate_alias_target ()->order ints instead of
+	ultimate_alias_target () pointers.
+
 2015-03-23  Richard Biener  <rguenther@suse.de>
 
 	PR tree-optimization/65518

gcc/ipa-icf.c

@@ -575,7 +575,7 @@ sem_item::update_hash_by_addr_refs (hash_map <symtab_node *,
     {
       ref = node->iterate_reference (i, ref);
       if (ref->address_matters_p () || !m_symtab_node_map.get (ref->referred))
-	hstate.add_ptr (ref->referred->ultimate_alias_target ());
+	hstate.add_int (ref->referred->ultimate_alias_target ()->order);
     }
 
   if (is_a <cgraph_node *> (node))
@@ -585,7 +585,7 @@ sem_item::update_hash_by_addr_refs (hash_map <symtab_node *,
 	{
 	  sem_item **result = m_symtab_node_map.get (e->callee);
 	  if (!result)
-	    hstate.add_ptr (e->callee->ultimate_alias_target ());
+	    hstate.add_int (e->callee->ultimate_alias_target ()->order);
 	}
     }
 

gcc/testsuite/ChangeLog

+2014-03-23  Jakub Jelinek  <jakub@redhat.com>
+
+	PR ipa/65521
+	* gcc.dg/pr65521.c: New test.
+
 2015-03-23  Richard Biener  <rguenther@suse.de>
 
 	PR tree-optimization/65518

gcc/testsuite/gcc.dg/pr65521.c

+/* PR ipa/65521 */
+/* { dg-do compile } */
+/* { dg-options "-O2 -fcompare-debug" } */
+
+struct S { int s; };
+int f6 (void *, unsigned long);
+int f7 (int, int *, unsigned long);
+int f8 (void);
+int f9 (void (*) (void));
+
+int
+f1 (void *p)
+{
+  return f6 (p, 256UL);
+}
+
+int
+f2 (void *p)
+{
+  return f6 (p, 256UL);
+}
+
+int
+f3 (struct S *x)
+{
+  return f7 (f8 (), &x->s, 16UL);
+}
+
+int
+f4 (struct S *x)
+{
+  return f7 (f8 (), &x->s, 16UL);
+}
+
+void
+f5 (void)
+{
+  f9 (f5);
+}