Use shortcuts for Flength

When calculating the length of a Lisp object whose type is
known, use a specialized length operation on it to save a bit
of runtime overhead.
* src/callint.c (Fcall_interactively):
* src/minibuf.c (read_minibuf_unwind):
Use ASIZE rather than Flength on values that must be vectors.
* src/charset.c (Fsort_charsets):
* src/coding.c (detect_coding_sjis):
(Fdefine_coding_system_internal):
* src/data.c (wrong_choice):
* src/eval.c (Flet, eval_sub, Fapply, apply_lambda):
* src/fns.c (sort_list):
* src/font.c (font_vconcat_entity_vectors)
(font_find_for_lface):
* src/frame.c (Fmodify_frame_parameters):
* src/fringe.c (get_logical_fringe_bitmap):
* src/ftfont.c (ftfont_get_open_type_spec):
* src/gtkutil.c (xg_print_frames_dialog):
* src/lread.c (read1, read_vector):
* src/keymap.c (Fkey_description):
* src/kqueue.c (Fkqueue_add_watch):
* src/macfont.m (macfont_get_open_type_spec):
* src/menu.c (parse_single_submenu, x_popup_menu_1):
* src/minibuf.c (Finternal_complete_buffer):
* src/nsfont.m (ns_findfonts, nsfont_list_family):
* src/process.c (Fmake_process):
* src/search.c (Fset_match_data):
* src/xfaces.c (Fx_family_fonts):
Use list_length rather than Flength on values that must be lists.
* src/fns.c (list_length): New function.
(Flength): Use it.
* src/nsfont.m (ns_findfonts):
Use !NILP (x) rather than XFIXNUM (Flength (x)) != 0.
* src/xdisp.c (store_mode_line_string):
Use SCHARS rather than Flength on values that must be strings.

1 files changed, 2 insertions, 3 deletions

diff --git a/src/lread.c b/src/lread.c
index 02f7caadeda..5a595f2119b 100644
--- a/src/lread.c
+++ b/src/lread.c
@@ -2879,7 +2879,7 @@ read1 (Lisp_Object readcharfun, int *pch, bool first_in_list)
                   /* Sub char-table can't be read as a regular
                      vector because of a two C integer fields.  */
                   Lisp_Object tbl, tmp = read_list (1, readcharfun);
-                  ptrdiff_t size = XFIXNUM (Flength (tmp));
+                  ptrdiff_t size = list_length (tmp);
                   int i, depth, min_char;
                   struct Lisp_Cons *cell;
 
@@ -3846,8 +3846,7 @@ static Lisp_Object
 read_vector (Lisp_Object readcharfun, bool bytecodeflag)
 {
   Lisp_Object tem = read_list (1, readcharfun);
-  Lisp_Object len = Flength (tem);
-  ptrdiff_t size = XFIXNAT (len);
+  ptrdiff_t size = list_length (tem);
   if (bytecodeflag && size <= COMPILED_STACK_DEPTH)
     error ("Invalid byte code");
   Lisp_Object vector = make_nil_vector (size);