re PR lto/53572 (Some public symbols don't get to serialized LTO)

	PR lto/53572
	* cgraph.h (varpool_can_remove_if_no_refs): Fix handling of
	used symbols.

From-SVN: r188982

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 2fd5563c9f08a2cca89d96eb12d58bfb553d014b..3d93cec5e337312da74a90bc696b4a047c90dddb 100644 (file)
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,9 @@
+2012-06-26  Jan Hubicka  <jh@suse.cz>
+
+       PR lto/53572
+       * cgraph.h (varpool_can_remove_if_no_refs): Fix handling of
+       used symbols.
+
 2012-06-26  Dehao Chen  <dehao@google.com>
 
        * tree-inline.c: (expand_call_inline): Ensure that lexical block's

diff --git a/gcc/cgraph.h b/gcc/cgraph.h
index 0dec33f7757b13cb242d2c123f1439afa770c519..7b9098bad04cf2f8e48fad929e5dc3ed10b8fe30 100644 (file)
--- a/gcc/cgraph.h
+++ b/gcc/cgraph.h
@@ -1126,7 +1126,8 @@ varpool_can_remove_if_no_refs (struct varpool_node *node)
   if (DECL_EXTERNAL (node->symbol.decl))
     return true;
   return (!node->symbol.force_output && !node->symbol.used_from_other_partition
-         && (DECL_COMDAT (node->symbol.decl)
+         && ((DECL_COMDAT (node->symbol.decl)
+              && !symtab_used_from_object_file_p ((symtab_node) node))
              || !node->symbol.externally_visible
              || DECL_HAS_VALUE_EXPR_P (node->symbol.decl)));
 }