commit defc1ea34074e7882724c460260d307cdf981a70
author Denis Vlasenko <vda.linux@googlemail.com> Fri Jun 27 02:52:20 2008 +0000
committer Denis Vlasenko <vda.linux@googlemail.com> Fri Jun 27 02:52:20 2008 +0000
tree fca9b9a5fe243f9c0c76b84824ea2ff92ea8e589
parent 26bc57d8b26425f23f4be974cce7bf35c95c9a1a

*: 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

include/platform.h

diff --git a/include/platform.h b/include/platform.h
index cdc1151..8d6ed9a 100644
--- a/include/platform.h
+++ b/include/platform.h
@@ -97,6 +97,13 @@
 # endif
 #endif
 
+#if __GNUC_PREREQ(3,0) && defined(i386)
+/* || defined(__x86_64__)? */
+# define FAST_FUNC __attribute__((regparm(3)))
+#else
+# define FAST_FUNC
+#endif
+
 /* ---- Endian Detection ------------------------------------ */
 
 #if (defined __digital__ && defined __unix__)