*: 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
diff --git a/libbb/mode_string.c b/libbb/mode_string.c
index d17cc4a..b9975f4 100644
--- a/libbb/mode_string.c
+++ b/libbb/mode_string.c
@@ -51,7 +51,7 @@
/* 0123456789abcdef */
static const char mode_chars[7] ALIGN1 = "rwxSTst";
-const char *bb_mode_string(mode_t mode)
+const char* FAST_FUNC bb_mode_string(mode_t mode)
{
static char buf[12];
char *p = buf;
@@ -91,7 +91,7 @@
/* 0123456789abcdef */
static const char mode_chars[7] = "rwxSTst";
-const char *bb_mode_string(mode_t mode)
+const char* FAST_FUNC bb_mode_string(mode_t mode)
{
static char buf[12];
char *p = buf;