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/** \noop-*-C++-*-vi:ft=cpp
* @file
* @author Ruby developers <ruby-core@ruby-lang.org>
* @copyright This file is a part of the programming language Ruby.
* Permission is hereby granted, to either redistribute and/or
* modify this file, provided that the conditions mentioned in the
* file COPYING are met. Consult the file for details.
* @warning Symbols prefixed with either `RUBY3` or `ruby3` are
* implementation details. Don't take them as canon. They could
* rapidly appear then vanish. The name (path) of this header file
* is also an implementation detail. Do not expect it to persist
* at the place it is now. Developers are free to move it anywhere
* anytime at will.
* @note To ruby-core: remember that this header can be possibly
* recursively included from extension libraries written in C++.
* Do not expect for instance `__VA_ARGS__` is always available.
* We assume C99 for ruby itself but we don't assume languages of
* extension libraries. They could be written in C++98.
* @brief Defines #RUBY3_HAS_BUILTIN.
*/
#include "ruby/3/config.h"
#include "ruby/3/compiler_since.h"
#include "ruby/3/token_paste.h"
/** Wraps (or simulates) `__has_builtin`. */
#if defined(RUBY3_HAS_BUILTIN)
# /* Take that. */
#elif defined(__has_builtin)
# define RUBY3_HAS_BUILTIN(_) __has_builtin(_)
#elif RUBY3_COMPILER_IS(GCC)
# /* :FIXME: Historically GCC has had tons of builtins, but it implemented
# * __has_builtin only since GCC 10. This section can be made more
# * granular. */
# /* https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66970 */
# define RUBY3_HAS_BUILTIN(_) RUBY3_TOKEN_PASTE(RUBY3_HAS_BUILTIN_, _)
# define RUBY3_HAS_BUILTIN___builtin_add_overflow RUBY3_COMPILER_SINCE(GCC, 5, 1, 0)
# define RUBY3_HAS_BUILTIN___builtin_alloca RUBY3_COMPILER_SINCE(GCC, 0, 0, 0)
# define RUBY3_HAS_BUILTIN___builtin_alloca_with_align RUBY3_COMPILER_SINCE(GCC, 6, 1, 0)
# /* See http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52624 for bswap16. */
# define RUBY3_HAS_BUILTIN___builtin_bswap16 RUBY3_COMPILER_SINCE(GCC, 4, 8, 0)
# define RUBY3_HAS_BUILTIN___builtin_bswap32 RUBY3_COMPILER_SINCE(GCC, 3, 6, 0)
# define RUBY3_HAS_BUILTIN___builtin_bswap64 RUBY3_COMPILER_SINCE(GCC, 3, 6, 0)
# define RUBY3_HAS_BUILTIN___builtin_clz RUBY3_COMPILER_SINCE(GCC, 3, 6, 0)
# define RUBY3_HAS_BUILTIN___builtin_clzl RUBY3_COMPILER_SINCE(GCC, 3, 6, 0)
# define RUBY3_HAS_BUILTIN___builtin_clzll RUBY3_COMPILER_SINCE(GCC, 3, 6, 0)
# define RUBY3_HAS_BUILTIN___builtin_constant_p RUBY3_COMPILER_SINCE(GCC, 2,95, 3)
# define RUBY3_HAS_BUILTIN___builtin_ctz RUBY3_COMPILER_SINCE(GCC, 3, 6, 0)
# define RUBY3_HAS_BUILTIN___builtin_ctzl RUBY3_COMPILER_SINCE(GCC, 3, 6, 0)
# define RUBY3_HAS_BUILTIN___builtin_ctzll RUBY3_COMPILER_SINCE(GCC, 3, 6, 0)
# define RUBY3_HAS_BUILTIN___builtin_expect RUBY3_COMPILER_SINCE(GCC, 3, 0, 0)
# define RUBY3_HAS_BUILTIN___builtin_mul_overflow RUBY3_COMPILER_SINCE(GCC, 5, 1, 0)
# define RUBY3_HAS_BUILTIN___builtin_mul_overflow_p RUBY3_COMPILER_SINCE(GCC, 7, 0, 0)
# define RUBY3_HAS_BUILTIN___builtin_popcount RUBY3_COMPILER_SINCE(GCC, 3, 6, 0)
# define RUBY3_HAS_BUILTIN___builtin_popcountl RUBY3_COMPILER_SINCE(GCC, 3, 6, 0)
# define RUBY3_HAS_BUILTIN___builtin_popcountll RUBY3_COMPILER_SINCE(GCC, 3, 6, 0)
# define RUBY3_HAS_BUILTIN___builtin_sub_overflow RUBY3_COMPILER_SINCE(GCC, 5, 1, 0)
# define RUBY3_HAS_BUILTIN___builtin_unreachable RUBY3_COMPILER_SINCE(GCC, 4, 5, 0)
# /* Note that "0, 0, 0" might be inaccurate. */
#elif RUBY3_COMPILER_IS(MSVC)
# /* MSVC has UNREACHABLE, but that is not __builtin_unreachable. */
# define RUBY3_HAS_BUILTIN(_) 0
#else
# /* Take config.h definition when available */
# define RUBY3_HAS_BUILTIN(_) RUBY3_TOKEN_PASTE(RUBY3_HAS_BUILTIN_, _)
# define RUBY3_HAS_BUILTIN___builtin_add_overflow HAVE_BUILTIN___BUILTIN_ADD_OVERFLOW
# define RUBY3_HAS_BUILTIN___builtin_alloca_with_align HAVE_BUILTIN___BUILTIN_ALLOCA_WITH_ALIGN
# define RUBY3_HAS_BUILTIN___builtin_assume_aligned HAVE_BUILTIN___BUILTIN_ASSUME_ALIGNED
# define RUBY3_HAS_BUILTIN___builtin_bswap16 HAVE_BUILTIN___BUILTIN_BSWAP16
# define RUBY3_HAS_BUILTIN___builtin_bswap32 HAVE_BUILTIN___BUILTIN_BSWAP32
# define RUBY3_HAS_BUILTIN___builtin_bswap64 HAVE_BUILTIN___BUILTIN_BSWAP64
# define RUBY3_HAS_BUILTIN___builtin_clz HAVE_BUILTIN___BUILTIN_CLZ
# define RUBY3_HAS_BUILTIN___builtin_clzl HAVE_BUILTIN___BUILTIN_CLZL
# define RUBY3_HAS_BUILTIN___builtin_clzll HAVE_BUILTIN___BUILTIN_CLZLL
# define RUBY3_HAS_BUILTIN___builtin_constant_p HAVE_BUILTIN___BUILTIN_CONSTANT_P
# define RUBY3_HAS_BUILTIN___builtin_ctz HAVE_BUILTIN___BUILTIN_CTZ
# define RUBY3_HAS_BUILTIN___builtin_ctzll HAVE_BUILTIN___BUILTIN_CTZLL
# define RUBY3_HAS_BUILTIN___builtin_expect HAVE_BUILTIN___BUILTIN_EXPECT
# define RUBY3_HAS_BUILTIN___builtin_mul_overflow HAVE_BUILTIN___BUILTIN_MUL_OVERFLOW
# define RUBY3_HAS_BUILTIN___builtin_mul_overflow_p HAVE_BUILTIN___BUILTIN_MUL_OVERFLOW_P
# define RUBY3_HAS_BUILTIN___builtin_popcount HAVE_BUILTIN___BUILTIN_POPCOUNT
# define RUBY3_HAS_BUILTIN___builtin_popcountll HAVE_BUILTIN___BUILTIN_POPCOUNTLL
# define RUBY3_HAS_BUILTIN___builtin_sub_overflow HAVE_BUILTIN___BUILTIN_SUB_OVERFLOW
# if defined(UNREACHABLE)
# define RUBY3_HAS_BUILTIN___builtin_unreachable
# endif
#endif
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