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, 3 insertions, 4 deletions

diff --git a/src/font.c b/src/font.c
index cf68160e59c..3fc77a1d76a 100644
--- a/src/font.c
+++ b/src/font.c
@@ -2174,13 +2174,12 @@ font_score (Lisp_Object entity, Lisp_Object *spec_prop)
 static Lisp_Object
 font_vconcat_entity_vectors (Lisp_Object list)
 {
-  EMACS_INT nargs = XFIXNAT (Flength (list));
+  ptrdiff_t nargs = list_length (list);
   Lisp_Object *args;
   USE_SAFE_ALLOCA;
   SAFE_ALLOCA_LISP (args, nargs);
-  ptrdiff_t i;
 
-  for (i = 0; i < nargs; i++, list = XCDR (list))
+  for (ptrdiff_t i = 0; i < nargs; i++, list = XCDR (list))
     args[i] = XCAR (list);
   Lisp_Object result = Fvconcat (nargs, args);
   SAFE_FREE ();
@@ -3241,7 +3240,7 @@ font_find_for_lface (struct frame *f, Lisp_Object *attrs, Lisp_Object spec, int
 
       if (! NILP (alters))
 	{
-	  EMACS_INT alterslen = XFIXNAT (Flength (alters));
+	  EMACS_INT alterslen = list_length (alters);
 	  SAFE_ALLOCA_LISP (family, alterslen + 2);
 	  for (i = 0; CONSP (alters); i++, alters = XCDR (alters))
 	    family[i] = XCAR (alters);