From 1083e15c47539133a0e5075bb3d9f2b7741633f3 Mon Sep 17 00:00:00 2001
From: Jeff Garzik <jeff@garzik.org>
Date: Thu, 17 Feb 2011 01:22:55 -0500
Subject: Mark hash success as unlikely, using __builtin_expect() intrinsic

---
 miner.h | 8 ++++++++
 1 file changed, 8 insertions(+)

(limited to 'miner.h')

diff --git a/miner.h b/miner.h
index b396380..1c73114 100644
--- a/miner.h
+++ b/miner.h
@@ -21,6 +21,14 @@
 #include <byteswap.h>
 #endif
 
+#if defined(__GNUC__) && (__GNUC__ > 2) && defined(__OPTIMIZE__)
+#undef unlikely
+#define unlikely(expr) (__builtin_expect((expr), 0))
+#else
+#undef unlikely
+#define unlikely(expr) (expr)
+#endif
+
 #if defined(__i386__)
 #define WANT_CRYPTOPP_ASM32
 #endif
-- 
cgit v1.2.3-18-g5258