Compute DECL_ASSEMBLER_NAME lazily.

	* tree.h (DECL_ASSEMBLER_NAME): Compute it lazily.
	(DECL_ASSEMBLER_NAME_SET_P): New macro.
	(SET_DECL_ASSEMBLER_NAME): Likewise.
	(COPY_DECL_ASSEMBLER_NAME): Likewise.
	(set_decl_assembler_name): Declare.
	(lang_set_decl_assembler_name): Likewise.
	* tree.c (lang_set_decl_assembler_name): New variab.e
	(set_decl_assembler_name): New function.
	(init_obstacks): Set lang_set_decl_assembler_name.
	(build_decl): Don't set DECL_ASSEMBLER_NAME.
	* c-decl.c (duplicate_decls): Use SET_DECL_ASSEMBLER_NAME,
	COPY_DECL_ASSEMBLER_NAME, etc.  Don't set DECL_ASSEMBLER_NAME
	where it's not necessary.
	(builtin_function): Likewise.
	(finish_decl): Likewise.
	* dbxout.c (dbxout_type_methods): Likewise.
	* ggc-common.c (ggc_mark_trees): Likewise.
	* profile.c (output_func_start_profiler): Likewise.
	* varasm.c (make_decl_rtl): Likewise.

	* class.c (get_vtable_decl): Use SET_DECL_ASSEMBLER_NAME,
	COPY_DECL_ASSEMBLER_NAME, etc.  Don't set DECL_ASSEMBLER_NAME
	where it's not necessary.
	(add_method): Remove optimization involving comparison of
	DECL_ASSEMBLER_NAME.
	(build_vtbl_or_vbase_field): Use SET_DECL_ASSEMBLER_NAME,
	COPY_DECL_ASSEMBLER_NAME, etc.  Don't set DECL_ASSEMBLER_NAME
	where it's not necessary.
	(check_methods): Likewise.
	(build_clone): Likewise.
	(built_vtt): Likewise.
	* cp-tree.h (DECL_NEEDED_P): Likewise.
	* decl.c (pushtag): Likewise.
	(duplicate_decls): Likewise.
	(pushdecl): Likewise.
	(builtin_function): Likewise.
	(build_library_fn_1): Set DECL_LANGUAGE for library functions.
	(build_cp_library_fn): Likewise.
	(maybe_commonize_var): Use SET_DECL_ASSEMBLER_NAME,
	COPY_DECL_ASSEMBLER_NAME, etc.  Don't set DECL_ASSEMBLER_NAME
	where it's not necessary.
	(make_rtl_for_nonlocal_decl): Likewise.
	(cp_finish_decl): Likewise.
	(grokfndecl): Likewise.
	(grokvardecl): Likewise.
	(grokdeclarator): Likewise.
	(start_function): Likewise.
	(cp_missing_return_ok_p): Likewise.
	* decl2.c (grokclassfn): Likewise.
	(check_classfn): Likewise.
	(finish_static_data_member_decl): Likewise.
	(grokfield): Likewise.
	* error.c (GLOBAL_IORD_P): Remove.
	(dump_global_iord): Improve output.
	(dump_decl): Avoid using DECL_ASSEMBLER_NAME.
	* except.c (nothrow_libfn_p): Summarily reject any function not in
	namespace-scope.
	* init.c (build_java_class_ref): Don't explicitly set
	DECL_ASSEMBLER_NAME after calling mangle_decl.
	* mangle.c (mangle_decl_string): Handle extern "C" functions.
	(mangle_decl): Set the DECL_ASSEMBLER_NAME for the decl.
	* method.c (set_mangled_name_for_decl): Don't explicitly set
	DECL_ASSEMBLER_NAME after calling mangle_decl.
	(make_thunk): Explicitly set the DECL_ASSEMBLER_NAME and
	IDENTIFIER_GLOBAL_VALUE for the thunk.
	* pt.c (set_mangled_name_for_template_decl): Remove.
	(check_explicit_specialization): Don't use it.
	(looup_template_class): Don't set DECL_ASSEMBLER_NAME.
	(tsubst_friend_function): Likewise.
	(tsubst_decl): Likewise.
	(regenerate_decl_from_template): Use COPY_DECL_ASSEMBLER_NAME.
	* rtti.c (get_tinfo_decl): Use SET_DECL_ASSEMBLER_NAME,
	COPY_DECL_ASSEMBLER_NAME, etc.  Don't set DECL_ASSEMBLER_NAME
	where it's not necessary.
	(tinfo_base_init): Likewise.
	(create_real_tinfo_var): Likewise.
	* search.c (looup_field_1): Likewise.
	* semantics.c (finish_named_return_value): Likewise.
	* tree.c (init_tree): Set lang_set_decl_assembler_name.

	* com.c (builtin_function): Use SET_DECL_ASSEMBLER_NAME.

	* class.c (build_class_ref): Use SET_DECL_ASSEMBLER_NAME.
	(layout_class): Likewise.
	(layout_class_method): Likewise.
	(emit_register_classes): Likewise.
	* decl.c (builtin_function): Likewise.
	(give_name_to_locals): Likewise.

From-SVN: r40642

1 files changed, 5 insertions, 4 deletions

diff --git a/gcc/cp/cp-tree.h b/gcc/cp/cp-tree.h
index 19bb167..eb4bc7c 100644
--- a/gcc/cp/cp-tree.h
+++ b/gcc/cp/cp-tree.h
@@ -1904,9 +1904,10 @@ struct lang_decl
    just been used somewhere, even if it's not really needed.  We need
    anything that isn't comdat, but we don't know for sure whether or
    not something is comdat until end-of-file.  */
-#define DECL_NEEDED_P(DECL)					\
-  ((at_eof && TREE_PUBLIC (DECL) && !DECL_COMDAT (DECL))	\
-   || (TREE_SYMBOL_REFERENCED (DECL_ASSEMBLER_NAME ((DECL))))	\
+#define DECL_NEEDED_P(DECL)						\
+  ((at_eof && TREE_PUBLIC (DECL) && !DECL_COMDAT (DECL))		\
+   || (DECL_ASSEMBLER_NAME_SET_P (DECL)					\
+       && TREE_SYMBOL_REFERENCED (DECL_ASSEMBLER_NAME ((DECL))))	\
    || (flag_syntax_only && TREE_USED ((DECL))))
 
 /* Non-zero iff DECL is memory-based.  The DECL_RTL of
@@ -4531,7 +4532,7 @@ extern void GNU_xref_member			PARAMS ((tree, tree));
 
 /* in mangle.c */
 extern void init_mangle                         PARAMS ((void));
-extern tree mangle_decl                         PARAMS ((tree));
+extern void mangle_decl                         PARAMS ((tree));
 extern const char *mangle_type_string           PARAMS ((tree));
 extern tree mangle_type                         PARAMS ((tree));
 extern tree mangle_typeinfo_for_type            PARAMS ((tree));