[PATCH 2/2] boilerplate: drop likely/unlikely annotations

Philippe Gerum rpm at xenomai.org
Fri Dec 4 12:43:35 CET 2020


From: Philippe Gerum <rpm at xenomai.org>

We have no more in-tree users of these. Besides, let's assume that the
CPU's branch predictor always has better clues than we might have when
assessing the likeliness of a condition.

Bonus: this clears a recurring source of namespace clashes with C++
frameworks like Boost.

Signed-off-by: Philippe Gerum <rpm at xenomai.org>
---
 include/boilerplate/compiler.h | 5 -----
 1 file changed, 5 deletions(-)

diff --git a/include/boilerplate/compiler.h b/include/boilerplate/compiler.h
index 94b9f8cad..263af6b0c 100644
--- a/include/boilerplate/compiler.h
+++ b/include/boilerplate/compiler.h
@@ -29,11 +29,6 @@
 #define __stringify_1(x...)	#x
 #define __stringify(x...)	__stringify_1(x)
 
-#ifndef likely
-#define likely(x)	__builtin_expect(!!(x), 1)
-#define unlikely(x)	__builtin_expect(!!(x), 0)
-#endif
-
 #ifndef __noreturn
 #define __noreturn	__attribute__((__noreturn__))
 #endif
-- 
2.26.2




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