*: introduce and use FAST_FUNC: regparm on i386, otherwise no-on

   text    data     bss     dec     hex filename
 808035     611    6868  815514   c719a busybox_old
 804472     611    6868  811951   c63af busybox_unstripped

1 files changed, 1 insertions, 1 deletions

diff --git a/editors/diff.c b/editors/diff.c
index ad089e2a6..d7eccfbba 100644
--- a/editors/diff.c
+++ b/editors/diff.c
@@ -1163,7 +1163,7 @@ static void do_diff(char *dir1, char *path1, char *dir2, char *path2)
 
 #if ENABLE_FEATURE_DIFF_DIR
 /* This function adds a filename to dl, the directory listing. */
-static int add_to_dirlist(const char *filename,
+static int FAST_FUNC add_to_dirlist(const char *filename,
                 struct stat *sb ATTRIBUTE_UNUSED,
                 void *userdata,
                 int depth ATTRIBUTE_UNUSED)