Introduce C++ support in libcc1

Extend libcc1's with an API for C++ support.

Extend libcc1's C API to distinguish between integral types with the
same width, as in C++.  Likewise for float types.

Export small bits of functionality from the C++ front-end for use in
libcc1.  Add support for the C++ front-end to look up names and
addresses using a libcc1-registered binding oracle.  Add support for
global friends.


for  gcc/cp/ChangeLog

	Introduce C++ support in libcc1.
	* cp-tree.h (struct lang_identifier): Add oracle_looked_up.
	(ansi_opname): Rename to...
	(cp_operator_id): ... this.  Adjust all callers.
	(ansi_assopname): Rename to...
	(cp_assignment_operator_id): ... this.  Adjust all callers.
	(cp_literal_operator_id): Declare.
	(set_global_friend): Declare.
	(is_global_friend): Declare.
	(enum cp_oracle_request): New type.
	(cp_binding_oracle_function): New type.
	(cp_binding_oracle): Declare.
	(cp_finish_injected_record_type): Declare.
	* friend.c (global_friend): New var.
	(set_global_friend): New fn.
	(is_global_friend): New fn.
	(is_friend): Call is_global_friend.
	* name-lookup.c (cp_binding_oracle): New var.
	(query_oracle): New fn.
	(qualified_lookup_using_namespace): Call query_oracle.
	(lookup_name_real_1): Likewise.
	* parser.c (cp_literal_operator_id): Drop static.
	* search.c (friend_accessible_p): Call is_global_friend.
	* semantics.c (is_this_parameter): Accept a variable if the
	binding oracle is enabled.

for  include/ChangeLog

	Introduce C++ support in libcc1.
	* gcc-c-fe.def (int_type_v0): Rename from...
	(int_type): ... this.  Introduce new version.
	(float_type_v0): Rename from...
	(float_type): ... this.  Introduce new version.
	(char_type): New.
	* gcc-c-interface.h (gcc_c_api_version): Add GCC_C_FE_VERSION_1.
	(gcc_type_array): Move...
	* gcc-interface.h: ... here.
	* gcc-cp-fe.def: New.
	* gcc-cp-interface.h: New.

for  libcc1/ChangeLog

	Introduce C++ support.
	* Makefile.am (AM_CPPFLAGS): Move some -I flags to...
	(CPPFLAGS_FOR_C_FAMILY, CPPFLAGS_FOR_C, CPPFLAGS_FOR_CXX): ...
	new macros.
	(plugin_LTLIBRARIES): Add libcp1plugin.la.
	(BUILT_SOURCES, MOSTLYCLEANFILES): Add...
	(cp-compiler-name.h): ... this.  New.
	(c-compiler-name.h): Rename all over from...
	(compiler-name.h): ... this.  Create it atomically.
	(marshall_c_source, marshall_cxx_source): New macros.
	(libcc1plugin_la_SOURCES): Rename plugin.cc to libcc1plugin.cc.
	Add marshall_c_source expansion.
	(libcc1plugin.lo_CPPFLAGS): New macro.
	(libcp1plugin_la_LDFLAGS): Likewise.
	(libcp1plugin_la_SOURCES): Likewise.
	(libcp1plugin.lo_CPPFLAGS): Likewise.
	(libcp1plugin_la_LIBADD): Likewise.
	(libcp1plugin_la_DEPENDENCIES): Likewise.
	(libcp1plugin_la_LINK): Likewise.
	(libcc1_la_SOURCES): Added marshall_c_source and
	marshall_cxx_source expansions.
	* Makefile.in: Rebuild.
	* compiler-name.h: Rename all over to...
	* c-compiler-name.h: ... this.  Define C_COMPILER_NAME instead
	of COMPILER_NAME.
	* plugin.cc: Rename all over to...
	* libcc1plugin.cc: ... this.  Include marshall-c.hh.
	(address_rewriter): Drop cleaning up of VLA sizes.
	(plugin_build_decl): Mark decls as external.
	(plugin_tagbind): Propagate name to all variants.
	(build_anonymous_node): New.
	(plugin_build_record_type): Use it instead of make_node.
	(plugin_build_union_type): Likewise.
	(plugin_build_enum_type): Likewise.
	(plugin_finish_record_or_union): Update all type variants.
	(safe_lookup_builtin_type): New.
	(plugin_int_check): Factor out of, and add checks to, ...
	(plugin_int_type): ... this.  Rename to...
	(plugin_int_type_v0): ... this.
	(plugin_int_type): New interface, new implementation.
	(plugin_char_type): New.
	(plugin_float_type_v0): Rename from...
	(plugin_float_type): ... this.  New interface, new implementation.
	(plugin_init): Bump handshake version.
	* libcc1.cc: Include marshall-c.hh.  Drop gcc-interface.h.
	(call_binding_oracle): Rename to...
	(c_call_binding_oracle): ... this, into anonymous namespace.
	(call_symbol_address): Rename to...
	(c_call_symbol_address): ... this, likewise.
	(GCC_METHOD#): Move methods into cc1plugin::c:: namespace.
	(libcc1::compiler::find): Refer to C_COMPILER_NAME.
	(fork_exec): Bump to GCC_C_FE_VERSION_1.
	(libcc1_compile): Prefix callbacks with c_.
	(gcc_c_fe_context): Accept GCC_C_FE_VERSION_1.
	* libcc1.sym: Export gcc_cp_fe_context.
	* libcp1.cc: New, mostly copied and adjusted from libcc1.cc.
	* libcp1plugin.cc: New, initially copied from libcc1plugin.cc.
	* libcp1plugin.sym: New.
	* marshall-c.hh: New.  Move C-specific types from...
	* marshall.cc: ... this.
	(cc1_plugin::marshall_array_start): New.
	(cc1_plugin::marshall_array_elmts): New.
	(cc1_plugin::marshall for gcc_type_array): Use the above.
	(cc1_plugin::unmarshall_array_start): New.
	(cc1_plugin::unmarshall_array_elmts): New.
	(cc1_plugin::unmarshall for gcc_type_array): Use the above.
	* marshall.hh: Declare the new array building blocks.
	Drop C-specific unmarshall declarations.
	* marshall-cp.hh: New.
	* names.cc (GCC_METHOD#): Add LANG:: to method names.
	(LANG): Define while including gcc-c-fe.def and gcc-cp-fe.def.
	* names.hh: Include gcc-c-fe.def and gcc-cp-fe.def in the
	corresponding namespaces.
	* rpc.hh: Don't include marshall.hh.
	[GCC_CP_INTERFACE_H] (argument_wrapper): Specialize for
	gcc_vbase_array, gcc_cp_template_args, gcc_cp_function_args.

From-SVN: r245051

1 files changed, 34 insertions, 6 deletions

diff --git a/gcc/cp/cp-tree.h b/gcc/cp/cp-tree.h
index f412ddd..a744d837 100644
--- a/gcc/cp/cp-tree.h
+++ b/gcc/cp/cp-tree.h
@@ -332,6 +332,7 @@ struct GTY(()) lang_identifier {
   cxx_binding *bindings;
   tree class_template_info;
   tree label_value;
+  bool oracle_looked_up;
 };
 
 /* Return a typed pointer version of T if it designates a
@@ -1530,15 +1531,17 @@ struct GTY(()) language_function {
 /* True if NAME is the IDENTIFIER_NODE for an overloaded "operator
    new" or "operator delete".  */
 #define NEW_DELETE_OPNAME_P(NAME)		\
-  ((NAME) == ansi_opname (NEW_EXPR)		\
-   || (NAME) == ansi_opname (VEC_NEW_EXPR)	\
-   || (NAME) == ansi_opname (DELETE_EXPR)	\
-   || (NAME) == ansi_opname (VEC_DELETE_EXPR))
+  ((NAME) == cp_operator_id (NEW_EXPR)		\
+   || (NAME) == cp_operator_id (VEC_NEW_EXPR)	\
+   || (NAME) == cp_operator_id (DELETE_EXPR)	\
+   || (NAME) == cp_operator_id (VEC_DELETE_EXPR))
 
-#define ansi_opname(CODE) \
+#define cp_operator_id(CODE) \
   (operator_name_info[(int) (CODE)].identifier)
-#define ansi_assopname(CODE) \
+#define cp_assignment_operator_id(CODE) \
   (assignment_operator_name_info[(int) (CODE)].identifier)
+/* In parser.c.  */
+extern tree cp_literal_operator_id (const char *);
 
 /* TRUE if a tree code represents a statement.  */
 extern bool statement_code_p[MAX_TREE_CODES];
@@ -6027,6 +6030,9 @@ extern void make_friend_class			(tree, tree, bool);
 extern void add_friend				(tree, tree, bool);
 extern tree do_friend				(tree, tree, tree, tree, enum overload_flags, bool);
 
+extern void set_global_friend			(tree);
+extern bool is_global_friend			(tree);
+
 /* in init.c */
 extern tree expand_member_init			(tree);
 extern void emit_mem_initializers		(tree);
@@ -6944,6 +6950,25 @@ extern void suggest_alternatives_for            (location_t, tree, bool);
 extern bool suggest_alternative_in_explicit_scope (location_t, tree, tree);
 extern tree strip_using_decl                    (tree);
 
+/* Tell the binding oracle what kind of binding we are looking for.  */
+
+enum cp_oracle_request
+{
+  CP_ORACLE_IDENTIFIER
+};
+
+/* If this is non-NULL, then it is a "binding oracle" which can lazily
+   create bindings when needed by the C compiler.  The oracle is told
+   the name and type of the binding to create.  It can call pushdecl
+   or the like to ensure the binding is visible; or do nothing,
+   leaving the binding untouched.  c-decl.c takes note of when the
+   oracle has been called and will not call it again if it fails to
+   create a given binding.  */
+
+typedef void cp_binding_oracle_function (enum cp_oracle_request, tree identifier);
+
+extern cp_binding_oracle_function *cp_binding_oracle;
+
 /* in constraint.cc */
 extern void init_constraint_processing          ();
 extern bool constraint_p                        (tree);
@@ -7009,6 +7034,9 @@ extern void diagnose_constraints                (location_t, tree, tree);
 extern tree decompose_conclusions               (tree);
 extern bool subsumes                            (tree, tree);
 
+/* In class.c */
+extern void cp_finish_injected_record_type (tree);
+
 /* in vtable-class-hierarchy.c */
 extern void vtv_compute_class_hierarchy_transitive_closure (void);
 extern void vtv_generate_init_routine           (void);