gcc speedup patch

[Ulrich Drepper]

Hi,

Is it ok to install the appended patch?  It should speed up the
compiler itself on platforms with stdio implementations which are by
default thread safe (such as Linux).

-- 
---------------.      drepper at gnu.org  ,-.   1325 Chesapeake Terrace
Ulrich Drepper  \    ,-------------------'   \  Sunnyvale, CA 94089 USA
Cygnus Solutions `--' drepper at cygnus.com   `------------------------

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1998-12-02  Ulrich Drepper  <drepper@cygnus.com>

	* configure.in: Test for availability of putc_unlocked, fputc_unlocked,
	and fputs_unlocked.
	* system.h: If the *_unlocked functions are available use them
	instead of the locked counterparts by defining macros.
	* config.in: Regenerated.

Index: config.in
===================================================================
RCS file: /egcs/carton/cvsfiles/egcs/gcc/config.in,v
retrieving revision 1.40
diff -d -u -p -r1.40 config.in
--- config.in	1998/11/23 16:39:36	1.40
+++ config.in	1998/12/02 18:51:33
@@ -140,6 +147,12 @@
 /* Define if you have the bzero function.  */
 #undef HAVE_BZERO
 
+/* Define if you have the fputc_unlocked function.  */
+#undef HAVE_FPUTC_UNLOCKED
+
+/* Define if you have the fputs_unlocked function.  */
+#undef HAVE_FPUTS_UNLOCKED
+
 /* Define if you have the getrlimit function.  */
 #undef HAVE_GETRLIMIT
 
@@ -157,6 +170,9 @@
 
 /* Define if you have the popen function.  */
 #undef HAVE_POPEN
+
+/* Define if you have the putc_unlocked function.  */
+#undef HAVE_PUTC_UNLOCKED
 
 /* Define if you have the putenv function.  */
 #undef HAVE_PUTENV
Index: configure.in
===================================================================
RCS file: /egcs/carton/cvsfiles/egcs/gcc/configure.in,v
retrieving revision 1.184
diff -d -u -p -r1.184 configure.in
--- configure.in	1998/11/28 10:00:03	1.184
+++ configure.in	1998/12/02 18:51:34
@@ -371,7 +371,8 @@ fi
 
 AC_CHECK_FUNCS(strtoul bsearch strerror putenv popen bcopy bzero bcmp \
 	index rindex strchr strrchr kill getrlimit setrlimit atoll atoq \
-	sysconf isascii gettimeofday strsignal)
+	sysconf isascii gettimeofday strsignal putc_unlocked fputc_unlocked \
+	fputs_unlocked)
 
 # Make sure wchar_t is available
 #AC_CHECK_TYPE(wchar_t, unsigned int)
Index: system.h
===================================================================
RCS file: /egcs/carton/cvsfiles/egcs/gcc/system.h,v
retrieving revision 1.21
diff -d -u -p -r1.21 system.h
--- system.h	1998/11/27 10:08:25	1.21
+++ system.h	1998/12/02 18:51:34
@@ -21,6 +21,21 @@
 #define NULL 0
 #endif
 
+/* The compiler is not a multi-threaded application and therefore we
+   do not have to use the locking functions.  */
+#ifdef HAVE_PUTC_UNLOCKED
+# undef putc
+# define putc(C, Stream) putc_unlocked (C, Stream)
+#endif
+#ifdef HAVE_FPUTC_UNLOCKED
+# undef fputc
+# define fputc(C, Stream) fputc_unlocked (C, Stream)
+#endif
+#ifdef HAVE_FPUTS_UNLOCKED
+# undef fputs
+# define fputs(String, Stream) fputs_unlocked (String, Stream)
+#endif
+
 #include <ctype.h>
 
 /* Jim Meyering writes: