*: 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/libbb/vdprintf.c b/libbb/vdprintf.c
index 726d56374..09fffbca8 100644
--- a/libbb/vdprintf.c
+++ b/libbb/vdprintf.c
@@ -10,7 +10,7 @@
 #include "libbb.h"
 
 #if defined(__GLIBC__) && __GLIBC__ < 2
-int vdprintf(int d, const char *format, va_list ap)
+int FAST_FUNC vdprintf(int d, const char *format, va_list ap)
 {
         char buf[BUF_SIZE];
         int len;