lto-symtab.c (lto_cgraph_replace_node): Kill same body alias code.

	* lto-symtab.c (lto_cgraph_replace_node): Kill same body alias code.
	(lto_symtab_resolve_can_prevail_p): Likewise.
	(lto_symtab_merge_cgraph_nodes): Update merging of aliases.
	* cgraph.c (same_body_aliases_done): New global var.
	(cgraph_same_body_alias_1): Rename to ...
	(cgraph_create_function_alias): ... this one; reorg to new
	representation.
	(cgraph_same_body_alias): Use cgraph_create_function_alias;
	record references when asked to.
	(cgraph_add_thunk): Fix formating.
	(cgraph_get_node): Kill same body alias code.
	(cgraph_node_for_asm): Likewise.
	(cgraph_remove_same_body_alias): Remove.
	(cgraph_remove_node): Kill same body alias code.
	(cgraph_mark_address_taken_node): Mark also the aliased function
	as having address taken.
	(dump_cgraph_node): Dump same body aliases.
	(cgraph_for_node_thunks_and_aliases): Update for new alias
	representation.
	(cgraph_for_node_and_aliases): Likewise.
	* cgraph.h (same_body): Kll pointer.
	(same_body_alias): Update comment.
	(same_body_aliases_done): Declare.
	(cgraph_remove_same_body_alias): Remove declaration.
	(cgraph_create_function_alias): Declare.
	(cgraph_process_same_body_aliases): Declare.
	(cgraph_function_with_gimple_body_p): Check for alias.
	(cgraph_can_remove_if_no_direct_calls_p): Look for aliases.
	(cgraph_alias_aliased_node): New function.
	(cgraph_function_node): Update for new aliases.
	(cgraph_function_or_thunk_node): Likewise.
	* ipa-inline-transform.c (can_remove_node_now_p): Look for aliases.
	(inline_call): Remove dead aliases.
	* cgraphunit.c (cgraph_decide_is_function_needed): Disable assembler name
	hack for same body aliases.
	(clone_of_p): Look through aliases.
	(verify_cgraph_node): Verify aliases.
	(cgraph_analyze_function): Analyze aliases; fixup C++ bugs.
	(cgraph_process_same_body_aliases): New function.
	(process_function_and_variable_attributes): Disable weakref warning on
	alias.
	(cgraph_analyze_functions): Handle aliases.
	(cgraph_mark_functions_to_output): Handle aliases same way as thunks.
	(assemble_thunks): Rename to ...
	(assemble_thunks_and_aliases): ... this one; handle aliases, too.
	(cgraph_expand_function): Remove alias output code.
	(cgraph_output_in_order): Skip aliases.
	(cgraph_preserve_function_body_p): Aliases don't need preserving.
	* ipa-ref.c (ipa_ref_use_name): Add alias reference.
	(ipa_record_reference): Do not assert on alias references.
	(ipa_ref_has_aliases_p): New function.
	* ipa-ref.h (enum ipa_ref_use): Add IPA_REF_ALIAS.
	(ipa_ref_has_aliases_p): Declare.
	* lto-cgraph.c (lto_output_node): Handle aliases.
	(input_node): Likewise.
	* lto-streamer-out.c (lto_output): Skip aliases.
	(produce_symtab): Kill same_body_alias code.
	* ipa-utils.c (ipa_reverse_postorder): Add FIXME.
	(ipa_reverse_postorder): Use cgraph_only_called_directly_or_aliased_p.
	* ipa-inline.c (update_caller_keys): Walk aliases.
	(inline_small_functions): Fix thinko in previous patch.
	* ipa.c (cgraph_externally_visible_p): Do not walk aliases.
	(function_and_variable_visibility): Do not walk same body aliases.
	* tree-ssa-structalias.c (associate_varinfo_to_alias): New function.
	(ipa_pta_execute): Use it.

	* lto.c (add_cgraph_node_to_partition_1): Break out from ...
	(add_cgraph_node_to_partition) ... here; walk aliases.
	(lto_1_to_1_map): Remove same body alias code.
	(promote_fn): Likewise.
	(lto_promote_cross_file_statics): Update comment.

	* decl2.c (cp_write_global_declarations): Process aliases; look trhough
	same body aliases.

From-SVN: r174952

1 files changed, 2 insertions, 5 deletions

diff --git a/gcc/lto-streamer-out.c b/gcc/lto-streamer-out.c
index 02ac958..7a2f3f0 100644
--- a/gcc/lto-streamer-out.c
+++ b/gcc/lto-streamer-out.c
@@ -2253,6 +2253,7 @@ lto_output (cgraph_node_set set, varpool_node_set vset)
     {
       node = lto_cgraph_encoder_deref (encoder, i);
       if (lto_cgraph_encoder_encode_body_p (encoder, node)
+	  && !node->alias
 	  && !node->thunk.thunk_p)
 	{
 #ifdef ENABLE_CHECKING
@@ -2551,7 +2552,7 @@ produce_symtab (struct output_block *ob,
   struct lto_streamer_cache_d *cache = ob->writer_cache;
   char *section_name = lto_get_section_name (LTO_section_symtab, NULL, NULL);
   struct pointer_set_t *seen;
-  struct cgraph_node *node, *alias;
+  struct cgraph_node *node;
   struct varpool_node *vnode, *valias;
   struct lto_output_stream stream;
   lto_varpool_encoder_t varpool_encoder = ob->decl_state->varpool_node_encoder;
@@ -2584,8 +2585,6 @@ produce_symtab (struct output_block *ob,
       if (node->alias || node->global.inlined_to)
 	continue;
       write_symbol (cache, &stream, node->decl, seen, false);
-      for (alias = node->same_body; alias; alias = alias->next)
-        write_symbol (cache, &stream, alias->decl, seen, true);
     }
   for (i = 0; i < lto_cgraph_encoder_size (encoder); i++)
     {
@@ -2598,8 +2597,6 @@ produce_symtab (struct output_block *ob,
       if (node->alias || node->global.inlined_to)
 	continue;
       write_symbol (cache, &stream, node->decl, seen, false);
-      for (alias = node->same_body; alias; alias = alias->next)
-        write_symbol (cache, &stream, alias->decl, seen, true);
     }
 
   /* Write all variables.  */