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/*

 * Copyright (c) 2011 Intel Corporation

 *

 * Permission is hereby granted, free of charge, to any person obtaining a

 * copy of this software and associated documentation files (the "Software"),

 * to deal in the Software without restriction, including without limitation

 * the rights to use, copy, modify, merge, publish, distribute, sublicense,

 * and/or sell copies of the Software, and to permit persons to whom the

 * Software is furnished to do so, subject to the following conditions:

 *

 * The above copyright notice and this permission notice (including the next

 * paragraph) shall be included in all copies or substantial portions of the

 * Software.

 *

 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR

 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,

 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL

 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER

 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,

 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE

 * SOFTWARE.

 *

 * Authors:

 *    Chris Wilson 

 *

 */

#ifndef _SNA_COMPILER_H_

#define _SNA_COMPILER_H_

#if defined(__GNUC__) && (__GNUC__ > 2) && defined(__OPTIMIZE__)

#define likely(expr) (__builtin_expect (!!(expr), 1))

#define unlikely(expr) (__builtin_expect (!!(expr), 0))

#define noinline __attribute__((noinline))

#define force_inline inline __attribute__((always_inline))

#define fastcall __attribute__((regparm(3)))

#define must_check __attribute__((warn_unused_result))

#define constant __attribute__((const))

#define pure __attribute__((pure))

#define tightly_packed __attribute__((__packed__))

#define flatten __attribute__((flatten))

#define page_aligned __attribute__((aligned(4096)))

#else

#define likely(expr) (expr)

#define unlikely(expr) (expr)

#define noinline

#define force_inline inline

#define fastcall

#define must_check

#define constant

#define pure

#define tighly_packed

#define flatten

#define page_aligned

#endif

#define HAS_GCC(major, minor) defined(__GNUC__) && (__GNUC__ > (major) || __GNUC__ == (major) && __GNUC_MINOR__ >= (minor))

#if HAS_GCC(4, 5)

#define sse2 __attribute__((target("sse2,fpmath=sse")))

#define sse4_2 __attribute__((target("sse4.2,sse2,fpmath=sse")))

#endif

#if HAS_GCC(4, 7)

#define avx2 __attribute__((target("avx2,sse4.2,sse2,fpmath=sse")))

#endif

#if HAS_GCC(4, 6) && defined(__OPTIMIZE__)

#define fast __attribute__((optimize("Ofast")))

#else

#define fast

#endif

#if HAS_GCC(4, 6) && defined(__OPTIMIZE__)

#define fast_memcpy __attribute__((optimize("Ofast"))) __attribute__((target("inline-all-stringops")))

#elif HAS_GCC(4, 5) && defined(__OPTIMIZE__)

#define fast_memcpy __attribute__((target("inline-all-stringops")))

#else

#define fast_memcpy

#endif

#ifdef HAVE_VALGRIND

#define VG(x) x

#else

#define VG(x)

#endif

#define VG_CLEAR(s) VG(memset(&s, 0, sizeof(s)))

#define COMPILE_TIME_ASSERT(E) ((void)sizeof(char[1 - 2*!(E)]))

#endif /* _SNA_COMPILER_H_ */