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From: Siddhesh Poyarekar <siddhesh@redhat.com>
Date: Thu, 18 Feb 2016 16:11:12 +0100
Subject: [PATCH] __glibc_unlikely: New macro to wrap cases where
__builtin_expect is unavailable
2012-06-04 Siddhesh Poyarekar <siddhesh@redhat.com>
Jakub Jelinek <jakub@redhat.com>
[BZ #14188]
* misc/sys/cdefs.h (__glibc_unlikely): New macro to wrap cases
where __builtin_expect is unavailable.
---
misc/sys/cdefs.h | 6 ++++++
1 file changed, 6 insertions(+)
diff --git a/misc/sys/cdefs.h b/misc/sys/cdefs.h
index c9495a4..e901888 100644
--- a/misc/sys/cdefs.h
+++ b/misc/sys/cdefs.h
@@ -350,6 +350,12 @@
# endif
#endif
+#if __GNUC__ >= 3
+# define __glibc_unlikely(cond) __builtin_expect((cond), 0)
+#else
+# define __glibc_unlikely(cond) (cond)
+#endif
+
#include <bits/wordsize.h>
#if defined __LONG_DOUBLE_MATH_OPTIONAL && defined __NO_LONG_DOUBLE_MATH
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