gcc/

	* read-md.h (read_md_file): Declare.
	(read_char, unread_char): New functions.
	(fatal_with_file_and_line, fatal_expected_char, read_skip_spaces)
	(read_quoted_string, read_string): Remove FILE * argument.
	* read-md.c (read_md_file): New variable.
	(read_md_filename, read_md_lineno): Update comments and remove
	unnecessary initialization.
	(fatal_with_file_and_line, fatal_expected_char, read_skip_spaces)
	(read_escape, read_quoted_string, read_braced_string, read_string):
	Remove FILE * argument.  Update calls accordingly, using read_char
	and unread_char instead of getc and ungetc.
	* rtl.h (read_rtx): Remove FILE * argument.
	* read-rtl.c (iterator_group): Remove FILE * argument from
	"find_builtin".
	(iterator_traverse_data): Remove "infile" field.
	(find_mode, find_code, apply_mode_maps, apply_iterator_to_rtx)
	(add_mapping, read_name, read_constants, read_conditions)
	(validate_const_int, find_iterator, read_mapping, check_code_iterator)
	(read_rtx, read_rtx_1, read_rtx_variadic): Remove FILE * argument.
	Remove file arguments from all calls, using read_char and unread_char
	instead of getc and ungetc.
	* gensupport.c (process_include): Preserve read_md_file around
	the include.  Set read_md_file to the handle of the included file.
	Update call to read_rtx.
	(init_md_reader_args_cb): Set read_md_file to the handle of the file
	and remove local FILE *.  Update calls to read_rtx.


git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@160572 138bc75d-0d04-0410-961f-82ee72b054a4

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