From e98d8253b951e048c18dab5ea06a8bad5ebb522b Mon Sep 17 00:00:00 2001
From: Timo Teras <timo.teras@iki.fi>
Date: Tue, 14 Jul 2009 14:08:15 +0300
Subject: blob: add some likelyness to help compiler optimizations

---
 src/apk_defines.h | 12 ++++++++++++
 1 file changed, 12 insertions(+)

(limited to 'src/apk_defines.h')

diff --git a/src/apk_defines.h b/src/apk_defines.h
index 49ca9eb..c8a3622 100644
--- a/src/apk_defines.h
+++ b/src/apk_defines.h
@@ -30,6 +30,18 @@
 #define NULL 0L
 #endif
 
+#if defined __GNUC__ && __GNUC__ == 2 && __GNUC_MINOR__ < 96
+#define __builtin_expect(x, expected_value) (x)
+#endif
+
+#ifndef likely
+#define likely(x) __builtin_expect((!!(x)),1)
+#endif
+
+#ifndef unlikely
+#define unlikely(x) __builtin_expect((!!(x)),0)
+#endif
+
 #ifndef container_of
 #define container_of(ptr, type, member) ({                      \
         const typeof( ((type *)0)->member ) *__mptr = (ptr);    \
-- 
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