diff options
Diffstat (limited to 'third_party/rust/glslopt/glsl-optimizer/include/c99_compat.h')
| -rw-r--r-- | third_party/rust/glslopt/glsl-optimizer/include/c99_compat.h | 183 |
1 files changed, 183 insertions, 0 deletions
diff --git a/third_party/rust/glslopt/glsl-optimizer/include/c99_compat.h b/third_party/rust/glslopt/glsl-optimizer/include/c99_compat.h new file mode 100644 index 0000000000..729b5b7986 --- /dev/null +++ b/third_party/rust/glslopt/glsl-optimizer/include/c99_compat.h @@ -0,0 +1,183 @@ +/************************************************************************** + * + * Copyright 2007-2013 VMware, Inc. + * All Rights Reserved. + * + * 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, sub license, 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 NON-INFRINGEMENT. + * IN NO EVENT SHALL VMWARE AND/OR ITS SUPPLIERS 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. + * + **************************************************************************/ + +#include "no_extern_c.h" + +#ifndef _C99_COMPAT_H_ +#define _C99_COMPAT_H_ + + +/* + * MSVC hacks. + */ +#if defined(_MSC_VER) + +# if _MSC_VER < 1900 +# error "Microsoft Visual Studio 2015 or higher required" +# endif + + /* + * Visual Studio will complain if we define the `inline` keyword, but + * actually it only supports the keyword on C++. + * + * To avoid this the _ALLOW_KEYWORD_MACROS must be set. + */ +# if !defined(_ALLOW_KEYWORD_MACROS) +# define _ALLOW_KEYWORD_MACROS +# endif + + /* + * XXX: MSVC has a `__restrict` keyword, but it also has a + * `__declspec(restrict)` modifier, so it is impossible to define a + * `restrict` macro without interfering with the latter. Furthermore the + * MSVC standard library uses __declspec(restrict) under the _CRTRESTRICT + * macro. For now resolve this issue by redefining _CRTRESTRICT, but going + * forward we should probably should stop using restrict, especially + * considering that our code does not obbey strict aliasing rules any way. + */ +# include <crtdefs.h> +# undef _CRTRESTRICT +# define _CRTRESTRICT +#endif + + +/* + * C99 inline keyword + */ +#ifndef inline +# ifdef __cplusplus + /* C++ supports inline keyword */ +# elif defined(__GNUC__) +# define inline __inline__ +# elif defined(_MSC_VER) +# define inline __inline +# elif defined(__ICL) +# define inline __inline +# elif defined(__INTEL_COMPILER) + /* Intel compiler supports inline keyword */ +# elif defined(__WATCOMC__) && (__WATCOMC__ >= 1100) +# define inline __inline +# elif (__STDC_VERSION__ >= 199901L) + /* C99 supports inline keyword */ +# else +# define inline +# endif +#endif + + +/* + * C99 restrict keyword + * + * See also: + * - http://cellperformance.beyond3d.com/articles/2006/05/demystifying-the-restrict-keyword.html + */ +#ifndef restrict +# if (__STDC_VERSION__ >= 199901L) && !defined(__cplusplus) + /* C99 */ +# elif defined(__GNUC__) +# define restrict __restrict__ +# elif defined(_MSC_VER) +# define restrict __restrict +# else +# define restrict /* */ +# endif +#endif + + +/* + * C99 __func__ macro + */ +#ifndef __func__ +# if (__STDC_VERSION__ >= 199901L) + /* C99 */ +# elif defined(__GNUC__) +# define __func__ __FUNCTION__ +# elif defined(_MSC_VER) +# define __func__ __FUNCTION__ +# else +# define __func__ "<unknown>" +# endif +#endif + + +/* Simple test case for debugging */ +#if 0 +static inline const char * +test_c99_compat_h(const void * restrict a, + const void * restrict b) +{ + return __func__; +} +#endif + + +/* Fallback definitions, for scons which doesn't auto-detect these things. */ +#ifdef HAVE_SCONS + +# ifndef _WIN32 +# define HAVE_PTHREAD +# define HAVE_POSIX_MEMALIGN +# endif + +# ifdef __GNUC__ +# if __GNUC__ < 4 || (__GNUC__ == 4 && __GNUC_MINOR__ < 2) +# error "GCC version 4.2 or higher required" +# endif + + /* https://gcc.gnu.org/onlinedocs/gcc-4.2.4/gcc/Other-Builtins.html */ +# define HAVE___BUILTIN_CLZ 1 +# define HAVE___BUILTIN_CLZLL 1 +# define HAVE___BUILTIN_CTZ 1 +# define HAVE___BUILTIN_EXPECT 1 +# define HAVE___BUILTIN_FFS 1 +# define HAVE___BUILTIN_FFSLL 1 +# define HAVE___BUILTIN_POPCOUNT 1 +# define HAVE___BUILTIN_POPCOUNTLL 1 + /* https://gcc.gnu.org/onlinedocs/gcc-4.2.4/gcc/Function-Attributes.html */ +# define HAVE_FUNC_ATTRIBUTE_FLATTEN 1 +# define HAVE_FUNC_ATTRIBUTE_UNUSED 1 +# define HAVE_FUNC_ATTRIBUTE_FORMAT 1 +# define HAVE_FUNC_ATTRIBUTE_PACKED 1 +# define HAVE_FUNC_ATTRIBUTE_ALIAS 1 +# define HAVE_FUNC_ATTRIBUTE_NORETURN 1 + +# if __GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 3) + /* https://gcc.gnu.org/onlinedocs/gcc-4.3.6/gcc/Other-Builtins.html */ +# define HAVE___BUILTIN_BSWAP32 1 +# define HAVE___BUILTIN_BSWAP64 1 +# endif + +# if __GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 5) +# define HAVE___BUILTIN_UNREACHABLE 1 +# endif + +# endif /* __GNUC__ */ + +#endif /* HAVE_SCONS */ + + +#endif /* _C99_COMPAT_H_ */ |