re PR ipa/65287 (Current trunk ICE in address_matters_p, at symtab.c:1908)

	PR ipa/65287
	* ipa-icf.c (sem_variable::parse): Skip all alias variables.
	* gcc.dg/ipa/pr65287.c: New test.

From-SVN: r221156

gcc/ChangeLog

+2015-03-03  Martin Liska  <mliska@suse.cz>
+
+	PR ipa/65287
+	* ipa-icf.c (sem_variable::parse): Skip all alias variables.
+
 2015-03-03  Michael Meissner  <meissner@linux.vnet.ibm.com>
 
 	PR 65138/target

gcc/ipa-icf.c

@@ -1681,7 +1681,8 @@ sem_variable::equals (tree t1, tree t2)
 sem_variable *
 sem_variable::parse (varpool_node *node, bitmap_obstack *stack)
 {
-  if (TREE_THIS_VOLATILE (node->decl) || DECL_HARD_REGISTER (node->decl))
+  if (TREE_THIS_VOLATILE (node->decl) || DECL_HARD_REGISTER (node->decl)
+      || node->alias)
     return NULL;
 
   sem_variable *v = new sem_variable (node, 0, stack);

gcc/testsuite/ChangeLog

+2015-03-03  Martin Liska  <mliska@suse.cz>
+
+	PR ipa/65287
+	* gcc.dg/ipa/pr65287.c: New test.
+
 2015-03-03  Martin Jambor  <mjambor@suse.cz>
             Eric Botcazou  <ebotcazou@adacore.com>