From 23c41a1ef2157da8df646a78f93d9b6e39a85a87 Mon Sep 17 00:00:00 2001
From: Graham Miller <graham.miller@gmail.com>
Date: Thu, 4 Nov 2010 13:45:18 -0700
Subject: [PATCH] Small addition to previous optimization of memequal as
 discussed here:
 http://groups.google.com/group/golang-nuts/browse_thread/thread/f591ba36d83723c0/9aba02d344045f38

R=golang-dev, r, r2
CC=golang-dev
https://golang.org/cl/2880041
---
 src/pkg/runtime/runtime.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/src/pkg/runtime/runtime.c b/src/pkg/runtime/runtime.c
index 0b19e108ed..f2b6c587e9 100644
--- a/src/pkg/runtime/runtime.c
+++ b/src/pkg/runtime/runtime.c
@@ -320,6 +320,8 @@ memequal(uint32 s, void *a, void *b)
 {
 	byte *ba, *bb, *aend;
 
+	if(a == b)
+	  return 1;
 	ba = a;
 	bb = b;
 	aend = ba+s;