From: Alexander Monakov <amonakov@ispras.ru>
Date: Sat, 27 Jun 2015 23:48:30 +0000 (+0300)
Subject: dynlink.c: use a faster expression in gnu_hash
X-Git-Url: http://nsz.repo.hu/git/?a=commitdiff_plain;h=66d45787c865a1807ae397a89a14699394ed4fa4;p=musl

dynlink.c: use a faster expression in gnu_hash

With -Os, GCC uses a multiply rather than a shift and addition for 'h*33'.
Use a more efficient expression explicitely.
---

diff --git a/src/ldso/dynlink.c b/src/ldso/dynlink.c
index d2a72492..ec96be16 100644
--- a/src/ldso/dynlink.c
+++ b/src/ldso/dynlink.c
@@ -156,7 +156,7 @@ static uint32_t gnu_hash(const char *s0)
 	const unsigned char *s = (void *)s0;
 	uint_fast32_t h = 5381;
 	for (; *s; s++)
-		h = h*33 + *s;
+		h += h*32 + *s;
 	return h;
 }