Differential D27412 Diff 80862 sys/contrib/dpdk_rte_lpm/rte_branch_prediction.h

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				/* SPDX-License-Identifier: BSD-3-Clause
				* Copyright(c) 2010-2014 Intel Corporation
				*/

				/**
				* @file
				* Branch Prediction Helpers in RTE
				*/

				#ifndef _RTE_BRANCH_PREDICTION_H_
				#define _RTE_BRANCH_PREDICTION_H_

				/**
				* Check if a branch is likely to be taken.
				*
				* This compiler builtin allows the developer to indicate if a branch is
				* likely to be taken. Example:
				*
				* if (likely(x > 1))
				* do_stuff();
				*
				*/
				#ifndef likely
				#define likely(x) __builtin_expect(!!(x), 1)
				#endif /* likely */

				/**
				* Check if a branch is unlikely to be taken.
				*
				* This compiler builtin allows the developer to indicate if a branch is
				* unlikely to be taken. Example:
				*
				* if (unlikely(x < 1))
				* do_stuff();
				*
				*/
				#ifndef unlikely
				#define unlikely(x) __builtin_expect(!!(x), 0)
				#endif /* unlikely */

				#endif /* _RTE_BRANCH_PREDICTION_H_ */