gcc/
	* Makefile.in (build/genmddeps.o): Depend on $(READ_MD_H).
	* genmddeps.c: Include read-md.h.
	(main): Call init_rtx_reader_args instead of init_md_reader_args.
	* genattr.c (main): Likewise.
	* genattrtab.c (main): Likewise.
	* genautomata.c (main): Likewise.
	* gencodes.c (main): Likewise.
	* genconditions.c (main): Likewise.
	* genconfig.c (main): Likewise.
	* genconstants.c (main): Likewise.
	* genemit.c (main): Likewise.
	* genextract.c (main): Likewise.
	* genflags.c (main): Likewise.
	* genopinit.c (main): Likewise.
	* genoutput.c (main): Likewise.
	* genpeep.c (main): Likewise.
	* genrecog.c (main): Likewise.
	* genpreds.c (main): Likewise.
	* gensupport.h (in_fname): Move to read-md.h.
	(init_md_reader_args_cb): Rename to...
	(init_rtx_reader_args_cb): ...this and return a bool.
	(init_md_reader_args): Rename to...
	(init_rtx_reader_args): ...this and return a bool.
	(include_callback): Move to read-md.h.
	* gensupport.c (in_fname, include_callback, base_dir, max_include_len)
	(file_name_list, first_dir_md_include): Move to read-md.c
	(first_bracket_include): Delete unused variable.
	(last_dir_md_include): Move to read-md.c.
	(process_include): Delete, moving code to read-md.c:handle_include.
	(process_rtx): Don't handle INCLUDE.
	(save_string): Delete.
	(rtx_handle_directive): New function.
	(init_md_reader_args_cb): Rename to...
	(init_rtx_reader_args_cb): ...this and return a boolean success value.
	Use read_md_args.
	(init_md_reader_args): Rename to...
	(init_rtx_reader_args): ...this and return a boolean success value.
	* rtl.def (INCLUDE): Delete.
	* rtl.h (read_rtx): Remove "int *" argument.  Add "const char *"
	argument.
	* read-rtl.c (read_conditions): Don't gobble ')' here.
	(read_mapping): Likewise.
	(read_rtx): Remove LINENO argument.  Add RTX_NAME argument.
	Handle top-level non-rtx constructs here rather than in read_rtx_1.
	Store the whole queue in *X.  Remove call to init_md_reader.
	(read_rtx_1): Rename to...
	(read_rtx_code): ...this.  Call read_nested_rtx to read subrtxes.
	Don't handle top-level non-rtx constructs here.  Don't handle (nil)
	here.
	(read_nested_rtx): New function.  Handle (nil) here rather than
	in read_rtx_code.
	(read_rtx_variadic): Call read_nested_rtx to read subrtxes.  Don't
	gobble ')' here.
	* read-md.h (directive_handler_t): New type.
	(in_fname, include_callback): Moved from read-md.h.
	(read_constants, init_md_reader): Delete.
	(read_md_files): Declare.
	* read-md.c (file_name_list, in_fname, base_dir, first_dir_md_include)
	(last_dir_md_include_ptr, include_callback, max_include_len): Moved
	from gensupport.c.
	(read_constants): Rename to...
	(handle_constants): ...this.  Don't gobble ')' here.
	(handle_include, handle_file, handle_toplevel_file)
	(parse_include): New functions, mostly taken from gensupport.c.
	(init_md_reader): Subsume into...
	(read_md_files): ...this new function.

From-SVN: r160577