Speed up x86-64 strcasestr a bit moew.

Using the new SSE4.2 instructions is cool but not really the fastest.
Some older SSE instructions can do the trick faster.

1 files changed, 5 insertions, 0 deletions

diff --git a/ChangeLog b/ChangeLog
index 46985e63e5..4a22a07972 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+2010-07-24  Ulrich Drepper  <drepper@redhat.com>
+
+	* sysdeps/x86_64/multiarch/strstr.c (__m128i_strloadu_tolower): Use
+	lower-latency instructions.
+
 2010-07-23  Ulrich Drepper  <drepper@redhat.com>
 
 	* string/test-strcasestr.c: New file.