Do not overuse push/pop_cfun in IPA ICF.

2019-11-13  Martin Liska  <mliska@suse.cz>

	* ipa-icf.c (sem_function::equals_private): Do not overuse
	push/pop_cfun functions.

From-SVN: r278141

gcc/ChangeLog

 2019-11-13  Martin Liska  <mliska@suse.cz>
 
+	* ipa-icf.c (sem_function::equals_private): Do not overuse
+	push/pop_cfun functions.
+
+2019-11-13  Martin Liska  <mliska@suse.cz>
+
 	* common.opt: Document change of -fdbg-cnt option.
 	* dbgcnt.c (DEBUG_COUNTER): Remove.
 	(dbg_cnt_is_enabled): Remove.

gcc/ipa-icf.c

@@ -877,14 +877,9 @@ sem_function::equals_private (sem_item *item)
     }
 
   /* Checking all basic blocks.  */
-  push_cfun (DECL_STRUCT_FUNCTION (decl));
   for (unsigned i = 0; i < bb_sorted.length (); ++i)
     if(!m_checker->compare_bb (bb_sorted[i], m_compared_func->bb_sorted[i]))
-      {
-	pop_cfun ();
-	return return_false ();
-      }
-  pop_cfun ();
+      return return_false ();
 
   auto_vec <int> bb_dict;