c-common.c (handle_alias_ifunc_attribute): Do not set DECL_EXTERNAL for weakref variables.

	* c-family/c-common.c (handle_alias_ifunc_attribute): Do not set
	DECL_EXTERNAL for weakref variables.
	* c-family/c-pragma.c (handle_pragma_weak): Make sure aliases
	are not declared as external.
	* cgraph.c (cgraph_create_function_alias): Set weakref flag.
	* cgraph.h (symtab_node_base): Add weakref flag.
	* cgraphunit.c (cgraph_reset_node): Clear weakref flag.
	(handle_alias_pairs): Set weakref flag, do not set DECL_EXTERNAL.
	(output_weakrefs): Use weakref flag.
	* fold-const.c (simple_operand_p): Handle WEAK.
	* gimple-fold.c (can_refer_decl_in_current_unit_p): Drop weakref.
	* ipa.c (varpool_externally_visible_p): Drop weakref.
	(function_and_variable_visibility): Update comment; fix weakref
	sanity checks; do not clear DECL_WEAK on them.
	* lto-cgraph.c (lto_output_node): update.
	(lto_output_varpool_node): Update.
	(input_overwrite_node): Update.
	(input_node): Update.
	(input_varpool_node): Update.
	* lto-symtab.c (lto_symtab_symbol_p): Do not special case weakrefs.
	(lto_symtab_merge_symbols): Add sanity check.
	(lto_symtab_prevailing_decl): Do not special case weakrefs.
	* passes.c (rest_of_decl_compilation): Set static flag, too.
	* symtab.c (dump_symtab_base): Dump weakref.
	(verify_symtab_base): Sanity check weakrefs.
	(symtab_make_decl_local): Remove duplicated code.
	(symtab_alias_ultimate_target): Simplify.
	* varpool.c (varpool_create_variable_alias): Set weakref flag.

	* lto-partition.c (get_symbol_class): Simplify weakref handling.
	(add_symbol_to_partition_1): Likewise.
	(contained_in_symbol): Likewise.
	(lto_balanced_map): Likewise.
	(rename_statics): Drop weakref.

From-SVN: r199971

1 files changed, 1 insertions, 8 deletions

diff --git a/gcc/lto-symtab.c b/gcc/lto-symtab.c
index 2b41933..5f0b971 100644
--- a/gcc/lto-symtab.c
+++ b/gcc/lto-symtab.c
@@ -235,9 +235,6 @@ lto_symtab_symbol_p (symtab_node e)
 {
   if (!TREE_PUBLIC (e->symbol.decl) && !DECL_EXTERNAL (e->symbol.decl))
     return false;
-  /* weakrefs are really static variables that are made external by a hack.  */
-  if (lookup_attribute ("weakref", DECL_ATTRIBUTES (e->symbol.decl)))
-    return false;
   return symtab_real_symbol_p (e);
 }
 
@@ -589,6 +586,7 @@ lto_symtab_merge_symbols (void)
 	  if (!node->symbol.analyzed && node->symbol.alias_target)
 	    {
 	      symtab_node tgt = symtab_node_for_asm (node->symbol.alias_target);
+	      gcc_assert (node->symbol.weakref);
 	      if (tgt)
 		symtab_resolve_alias (node, tgt);
 	    }
@@ -617,11 +615,6 @@ lto_symtab_prevailing_decl (tree decl)
   if (TREE_CODE (decl) == FUNCTION_DECL && DECL_BUILT_IN (decl))
     return decl;
 
-  /* As an anoying special cases weakrefs are really static variables with
-     EXTERNAL flag.  */
-  if (lookup_attribute ("weakref", DECL_ATTRIBUTES (decl)))
-    return decl;
-
   /* Ensure DECL_ASSEMBLER_NAME will not set assembler name.  */
   gcc_assert (DECL_ASSEMBLER_NAME_SET_P (decl));