From: Rich Felker <dalias@aerifal.cx>
Date: Sat, 11 Aug 2012 02:18:49 +0000 (-0400)
Subject: trivial optimization to printf: avoid wasted call frame
X-Git-Tag: v0.9.4~23
X-Git-Url: https://git.librecmc.org/?a=commitdiff_plain;h=4c346919a9b238748de2ee85ce6d749fc3cf7059;p=oweals%2Fmusl.git

trivial optimization to printf: avoid wasted call frame

amusingly, this cuts more than 10% off the run time of printf("a"); on
the machine i tested it on.

sadly the same optimization is not possible for snprintf without
duplicating all the pseudo-FILE setup code, which is not worth it.
---

diff --git a/src/stdio/printf.c b/src/stdio/printf.c
index efeb8b33..7b7c329f 100644
--- a/src/stdio/printf.c
+++ b/src/stdio/printf.c
@@ -6,7 +6,7 @@ int printf(const char *fmt, ...)
 	int ret;
 	va_list ap;
 	va_start(ap, fmt);
-	ret = vprintf(fmt, ap);
+	ret = vfprintf(stdout, fmt, ap);
 	va_end(ap);
 	return ret;
 }