* lto-symtab.c (lto_symtab_resolve_symbols): Preffer decl with constructor

	over decl without.
	* cgraph.c (cgraph_remove_node): Clear also body of unanalyzed nodes.
	* cgraph.h (varpool_can_remove_if_no_refs): Handle external correctly.
	* cgraphunit.c (process_function_and_variable_attributes): Finalize 
	extrnal decls.
	(mark_functions_to_output): Also accept bodies for functions with clones.
	(output_in_order): Skip external vars.
	* lto-cgraph.c (lto_output_node): External functions are never in other
	partition.
	(lto_output_varpool_node): Likewise.
	* lto-streamer-out.c (lto_write_tree): Always use error_mark_nodes for
	forgotten initializers.
	* ipa.c (process_references): Handle external vars.
	(symtab_remove_unreachable_nodes): Update to handle external vars.
	(varpool_externally_visible_p): External vars are externally visible.
	* gimple-fold.c (can_refer_decl_in_current_unit_p): Update.
	* varpool.c (varpool_remove_node): Remove constructor.
	(decide_is_variable_needed): Handle externals.
	(varpool_remove_unreferenced_decls): Likewise.

	* lto-partition.c (add_references_to_partition): Handle external vars.
	(partition_varpool_node_p): Likewise.
	(lto_promote_cross_file_statics): Do not promote externals.


git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@187631 138bc75d-0d04-0410-961f-82ee72b054a4

1 files changed, 13 insertions, 6 deletions

diff --git a/gcc/cgraphunit.c b/gcc/cgraphunit.c
index c21ddb84c2f..97e810e5f2a 100644
--- a/gcc/cgraphunit.c
+++ b/gcc/cgraphunit.c
@@ -782,6 +782,10 @@ process_function_and_variable_attributes (struct cgraph_node *first,
        vnode = varpool_next_variable (vnode))
     {
       tree decl = vnode->symbol.decl;
+      if (DECL_EXTERNAL (decl)
+	  && DECL_INITIAL (decl)
+	  && const_value_known_p (decl))
+	varpool_finalize_decl (decl);
       if (DECL_PRESERVE_P (decl))
 	vnode->symbol.force_output = true;
       else if (lookup_attribute ("externally_visible", DECL_ATTRIBUTES (decl)))
@@ -1161,6 +1165,8 @@ mark_functions_to_output (void)
 	  gcc_assert (node->global.inlined_to
 		      || !gimple_has_body_p (decl)
 		      || node->symbol.in_other_partition
+		      || node->clones
+		      || DECL_ARTIFICIAL (decl)
 		      || DECL_EXTERNAL (decl));
 
 	}
@@ -1760,12 +1766,13 @@ output_in_order (void)
     }
 
   FOR_EACH_DEFINED_VARIABLE (pv)
-    {
-      i = pv->symbol.order;
-      gcc_assert (nodes[i].kind == ORDER_UNDEFINED);
-      nodes[i].kind = ORDER_VAR;
-      nodes[i].u.v = pv;
-    }
+    if (!DECL_EXTERNAL (pv->symbol.decl))
+      {
+	i = pv->symbol.order;
+	gcc_assert (nodes[i].kind == ORDER_UNDEFINED);
+	nodes[i].kind = ORDER_VAR;
+	nodes[i].u.v = pv;
+      }
 
   for (pa = asm_nodes; pa; pa = pa->next)
     {