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443389effc
Without this patch, 20k files are opened (openat syscall) because of duplicate includes. This patch reduced it to 3k and build time was reduced compile time of range.o from 15sec -> 3sec on my machine. [Bug #16772]
91 lines
5.9 KiB
C++
91 lines
5.9 KiB
C++
/** \noop-*-C++-*-vi:ft=cpp
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* @file
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* @author Ruby developers <ruby-core@ruby-lang.org>
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* @copyright This file is a part of the programming language Ruby.
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* Permission is hereby granted, to either redistribute and/or
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* modify this file, provided that the conditions mentioned in the
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* file COPYING are met. Consult the file for details.
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* @warning Symbols prefixed with either `RUBY3` or `ruby3` are
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* implementation details. Don't take them as canon. They could
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* rapidly appear then vanish. The name (path) of this header file
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* is also an implementation detail. Do not expect it to persist
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* at the place it is now. Developers are free to move it anywhere
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* anytime at will.
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* @note To ruby-core: remember that this header can be possibly
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* recursively included from extension libraries written in C++.
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* Do not expect for instance `__VA_ARGS__` is always available.
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* We assume C99 for ruby itself but we don't assume languages of
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* extension libraries. They could be written in C++98.
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* @brief Defines #RUBY3_HAS_BUILTIN.
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*/
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#include "ruby/3/config.h"
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/** Wraps (or simulates) `__has_builtin`. */
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#if defined(RUBY3_HAS_BUILTIN)
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# /* Take that. */
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#elif defined(__has_builtin) && ! RUBY3_COMPILER_IS(Intel)
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# /* :TODO: Intel C Compiler has __has_builtin (since 19.1 maybe?), and is
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# * reportedly broken. We have to skip them. However the situation can
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# * change. They might improve someday. We need to revisit here later. */
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# define RUBY3_HAS_BUILTIN(_) __has_builtin(_)
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#elif RUBY3_COMPILER_IS(GCC)
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# /* :FIXME: Historically GCC has had tons of builtins, but it implemented
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# * __has_builtin only since GCC 10. This section can be made more
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# * granular. */
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# /* https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66970 */
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# define RUBY3_HAS_BUILTIN(_) RUBY3_TOKEN_PASTE(RUBY3_HAS_BUILTIN_, _)
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# define RUBY3_HAS_BUILTIN___builtin_add_overflow RUBY3_COMPILER_SINCE(GCC, 5, 1, 0)
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# define RUBY3_HAS_BUILTIN___builtin_alloca RUBY3_COMPILER_SINCE(GCC, 0, 0, 0)
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# define RUBY3_HAS_BUILTIN___builtin_alloca_with_align RUBY3_COMPILER_SINCE(GCC, 6, 1, 0)
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# /* See http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52624 for bswap16. */
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# define RUBY3_HAS_BUILTIN___builtin_bswap16 RUBY3_COMPILER_SINCE(GCC, 4, 8, 0)
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# define RUBY3_HAS_BUILTIN___builtin_bswap32 RUBY3_COMPILER_SINCE(GCC, 3, 6, 0)
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# define RUBY3_HAS_BUILTIN___builtin_bswap64 RUBY3_COMPILER_SINCE(GCC, 3, 6, 0)
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# define RUBY3_HAS_BUILTIN___builtin_clz RUBY3_COMPILER_SINCE(GCC, 3, 6, 0)
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# define RUBY3_HAS_BUILTIN___builtin_clzl RUBY3_COMPILER_SINCE(GCC, 3, 6, 0)
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# define RUBY3_HAS_BUILTIN___builtin_clzll RUBY3_COMPILER_SINCE(GCC, 3, 6, 0)
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# define RUBY3_HAS_BUILTIN___builtin_constant_p RUBY3_COMPILER_SINCE(GCC, 2,95, 3)
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# define RUBY3_HAS_BUILTIN___builtin_ctz RUBY3_COMPILER_SINCE(GCC, 3, 6, 0)
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# define RUBY3_HAS_BUILTIN___builtin_ctzl RUBY3_COMPILER_SINCE(GCC, 3, 6, 0)
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# define RUBY3_HAS_BUILTIN___builtin_ctzll RUBY3_COMPILER_SINCE(GCC, 3, 6, 0)
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# define RUBY3_HAS_BUILTIN___builtin_expect RUBY3_COMPILER_SINCE(GCC, 3, 0, 0)
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# define RUBY3_HAS_BUILTIN___builtin_mul_overflow RUBY3_COMPILER_SINCE(GCC, 5, 1, 0)
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# define RUBY3_HAS_BUILTIN___builtin_mul_overflow_p RUBY3_COMPILER_SINCE(GCC, 7, 0, 0)
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# define RUBY3_HAS_BUILTIN___builtin_popcount RUBY3_COMPILER_SINCE(GCC, 3, 6, 0)
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# define RUBY3_HAS_BUILTIN___builtin_popcountl RUBY3_COMPILER_SINCE(GCC, 3, 6, 0)
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# define RUBY3_HAS_BUILTIN___builtin_popcountll RUBY3_COMPILER_SINCE(GCC, 3, 6, 0)
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# define RUBY3_HAS_BUILTIN___builtin_sub_overflow RUBY3_COMPILER_SINCE(GCC, 5, 1, 0)
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# define RUBY3_HAS_BUILTIN___builtin_unreachable RUBY3_COMPILER_SINCE(GCC, 4, 5, 0)
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# /* Note that "0, 0, 0" might be inaccurate. */
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#elif RUBY3_COMPILER_IS(MSVC)
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# /* MSVC has UNREACHABLE, but that is not __builtin_unreachable. */
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# define RUBY3_HAS_BUILTIN(_) 0
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#else
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# /* Take config.h definition when available */
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# define RUBY3_HAS_BUILTIN(_) (RUBY3_TOKEN_PASTE(RUBY3_HAS_BUILTIN_, _)+0)
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# define RUBY3_HAS_BUILTIN___builtin_add_overflow HAVE_BUILTIN___BUILTIN_ADD_OVERFLOW
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# define RUBY3_HAS_BUILTIN___builtin_alloca_with_align HAVE_BUILTIN___BUILTIN_ALLOCA_WITH_ALIGN
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# define RUBY3_HAS_BUILTIN___builtin_assume_aligned HAVE_BUILTIN___BUILTIN_ASSUME_ALIGNED
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# define RUBY3_HAS_BUILTIN___builtin_bswap16 HAVE_BUILTIN___BUILTIN_BSWAP16
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# define RUBY3_HAS_BUILTIN___builtin_bswap32 HAVE_BUILTIN___BUILTIN_BSWAP32
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# define RUBY3_HAS_BUILTIN___builtin_bswap64 HAVE_BUILTIN___BUILTIN_BSWAP64
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# define RUBY3_HAS_BUILTIN___builtin_clz HAVE_BUILTIN___BUILTIN_CLZ
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# define RUBY3_HAS_BUILTIN___builtin_clzl HAVE_BUILTIN___BUILTIN_CLZL
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# define RUBY3_HAS_BUILTIN___builtin_clzll HAVE_BUILTIN___BUILTIN_CLZLL
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# define RUBY3_HAS_BUILTIN___builtin_constant_p HAVE_BUILTIN___BUILTIN_CONSTANT_P
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# define RUBY3_HAS_BUILTIN___builtin_ctz HAVE_BUILTIN___BUILTIN_CTZ
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# define RUBY3_HAS_BUILTIN___builtin_ctzll HAVE_BUILTIN___BUILTIN_CTZLL
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# define RUBY3_HAS_BUILTIN___builtin_expect HAVE_BUILTIN___BUILTIN_EXPECT
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# define RUBY3_HAS_BUILTIN___builtin_mul_overflow HAVE_BUILTIN___BUILTIN_MUL_OVERFLOW
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# define RUBY3_HAS_BUILTIN___builtin_mul_overflow_p HAVE_BUILTIN___BUILTIN_MUL_OVERFLOW_P
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# define RUBY3_HAS_BUILTIN___builtin_popcount HAVE_BUILTIN___BUILTIN_POPCOUNT
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# define RUBY3_HAS_BUILTIN___builtin_popcountll HAVE_BUILTIN___BUILTIN_POPCOUNTLL
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# define RUBY3_HAS_BUILTIN___builtin_sub_overflow HAVE_BUILTIN___BUILTIN_SUB_OVERFLOW
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# if defined(UNREACHABLE)
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# define RUBY3_HAS_BUILTIN___builtin_unreachable
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# endif
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#endif
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