[c++][NFC] Rename Attached to Keyed

With modules, certain decls are 'scoped' with another decl.  I chose
the name 'attached', but that has become something specific in the
modules context, so is no longer a good name.  The alternative name I
considered was 'keyed', but we already had the concept of a key
virtual function (from the ABI), which is why I went with 'attached'.
However, I think 'keyed' is the less worse name.  I think there's less
chance of confusion.

	gcc/cp/
	* cp-tree.h (DECL_MODULE_KEYED_DECLS_P): Renamed from
	DECL_MODULE_ATTACHMENTS_P.
	(struct lane_decl_base): Rename module_attached_p to
	module_keyed_decls_p.
	(maybe_key_decl): Renamed from maybe_attach_decl.
	* lambda.cc (record_lambda_scope): Adjust.
	* lex.cc (cxx_dup_lang_specific_decl): Adjust.
	* module.cc (keyed_map_t, keyed_table): Renamed from attached_map_t,
	attached_table.
	(enum merge_kind): Rename MK_attached to MK_keyed.
	(trees_out::lang_decl_bools): Adjust.
	(trees_in::lang_decl_bools): Adjust.
	(trees_in::decl_value): Adjust.
	(trees_out::get_merge_kind): Adjust.
	(trees_out::key_mergeable): Adjust.
	(trees_in::key_mergeable): Adjust.
	(maybe_key_decl): Rename from maybe_attach_decl.
	(direct_import): Adjust.
	(fini_modules): Adjust.

1 files changed, 1 insertions, 1 deletions

diff --git a/gcc/cp/lambda.cc b/gcc/cp/lambda.cc
index afac53b..0a9f0f8 100644
--- a/gcc/cp/lambda.cc
+++ b/gcc/cp/lambda.cc
@@ -1431,7 +1431,7 @@ record_lambda_scope (tree lambda)
     {
       tree closure = LAMBDA_EXPR_CLOSURE (lambda);
       gcc_checking_assert (closure);
-      maybe_attach_decl (lambda_scope, TYPE_NAME (closure));
+      maybe_key_decl (lambda_scope, TYPE_NAME (closure));
     }
 }