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ruby--ruby/include/ruby/internal/has/builtin.h

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sed -i s/RUBY3/RBIMPL/g Devs do not love "3". The only exception is RUBY3_KEYWORDS in parse.y, which seems unrelated to our interests.
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#ifndef RBIMPL_HAS_BUILTIN_H /*-*-C++-*-vi:se ft=cpp:*/
#define RBIMPL_HAS_BUILTIN_H
add #include guard hack According to MSVC manual (*1), cl.exe can skip including a header file when that: - contains #pragma once, or - starts with #ifndef, or - starts with #if ! defined. GCC has a similar trick (*2), but it acts more stricter (e. g. there must be _no tokens_ outside of #ifndef...#endif). Sun C lacked #pragma once for a looong time. Oracle Developer Studio 12.5 finally implemented it, but we cannot assume such recent version. This changeset modifies header files so that each of them include strictly one #ifndef...#endif. I believe this is the most portable way to trigger compiler optimizations. [Bug #16770] *1: https://docs.microsoft.com/en-us/cpp/preprocessor/once *2: https://gcc.gnu.org/onlinedocs/cppinternals/Guard-Macros.html
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/**
Merge pull request #2991 from shyouhei/ruby.h Split ruby.h
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* @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.
sed -i s/ruby3/rbimpl/g
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* @warning Symbols prefixed with either `RBIMPL` or `rbimpl` are
Merge pull request #2991 from shyouhei/ruby.h Split ruby.h
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* 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.
sed -i s/RUBY3/RBIMPL/g Devs do not love "3". The only exception is RUBY3_KEYWORDS in parse.y, which seems unrelated to our interests.
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* @brief Defines #RBIMPL_HAS_BUILTIN.
Merge pull request #2991 from shyouhei/ruby.h Split ruby.h
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*/
sed -i 's|ruby/impl|ruby/internal|' To fix build failures.
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#include "ruby/internal/config.h"
#include "ruby/internal/compiler_since.h"
Merge pull request #2991 from shyouhei/ruby.h Split ruby.h
2020-04-08 00:28:13 -04:00
fix compiler error on gcc 4.x It seems gcc prior to 5 suffered from preprocessor bug. We have to provide workarounds. See https://github.com/ruby/ruby/runs/591138012 ---- Here is something interesting. According to C99, strictly speaking, the gcc behaviour was in fact legal(!) and everything else were wrong. This was not a bug of gcc, rather a bug of the ISO C Standard. This defect was reported to the committee as DR#412, and fixed accordingly. All tested compilers now conform C17's updated preprocessor description. See http://www.open-std.org/JTC1/SC22/WG14/www/docs/dr_412.htm
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#if defined(__has_builtin)
sed -i s/RUBY3/RBIMPL/g Devs do not love "3". The only exception is RUBY3_KEYWORDS in parse.y, which seems unrelated to our interests.
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# if RBIMPL_COMPILER_IS(Intel)
fix compiler error on gcc 4.x It seems gcc prior to 5 suffered from preprocessor bug. We have to provide workarounds. See https://github.com/ruby/ruby/runs/591138012 ---- Here is something interesting. According to C99, strictly speaking, the gcc behaviour was in fact legal(!) and everything else were wrong. This was not a bug of gcc, rather a bug of the ISO C Standard. This defect was reported to the committee as DR#412, and fixed accordingly. All tested compilers now conform C17's updated preprocessor description. See http://www.open-std.org/JTC1/SC22/WG14/www/docs/dr_412.htm
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# /* :TODO: Intel C Compiler has __has_builtin (since 19.1 maybe?), and is
# * reportedly broken. We have to skip them. However the situation can
# * change. They might improve someday. We need to revisit here later. */
sed -i s/RUBY3/RBIMPL/g Devs do not love "3". The only exception is RUBY3_KEYWORDS in parse.y, which seems unrelated to our interests.
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# elif RBIMPL_COMPILER_IS(GCC) && ! __has_builtin(__builtin_alloca)
fix compiler error on gcc 4.x It seems gcc prior to 5 suffered from preprocessor bug. We have to provide workarounds. See https://github.com/ruby/ruby/runs/591138012 ---- Here is something interesting. According to C99, strictly speaking, the gcc behaviour was in fact legal(!) and everything else were wrong. This was not a bug of gcc, rather a bug of the ISO C Standard. This defect was reported to the committee as DR#412, and fixed accordingly. All tested compilers now conform C17's updated preprocessor description. See http://www.open-std.org/JTC1/SC22/WG14/www/docs/dr_412.htm
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# /* FreeBSD's <sys/cdefs.h> defines its own *broken* version of
# * __has_builtin. Cygwin copied that content to be a victim of the
# * broken-ness. We don't take them into account. */
# else
sed -i s/RUBY3/RBIMPL/g Devs do not love "3". The only exception is RUBY3_KEYWORDS in parse.y, which seems unrelated to our interests.
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# define RBIMPL_HAVE___HAS_BUILTIN 1
fix compiler error on gcc 4.x It seems gcc prior to 5 suffered from preprocessor bug. We have to provide workarounds. See https://github.com/ruby/ruby/runs/591138012 ---- Here is something interesting. According to C99, strictly speaking, the gcc behaviour was in fact legal(!) and everything else were wrong. This was not a bug of gcc, rather a bug of the ISO C Standard. This defect was reported to the committee as DR#412, and fixed accordingly. All tested compilers now conform C17's updated preprocessor description. See http://www.open-std.org/JTC1/SC22/WG14/www/docs/dr_412.htm
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# endif
Support for FreeBSD <sys/cdefs.h> FreeBSD's <sys/cdefs.h> is broken. Cygwin is also affected by that. We need to avoid using them. See also: https://github.com/freebsd/freebsd/commit/d1c67819db000c02d3a9c79f3651c10aeedad1a0 https://sourceware.org/git/?p=newlib-cygwin.git;a=commit;f=newlib/libc/include/sys/cdefs.h;h=44d6d53977e6bc82c2b1e6dbe8ae7f310b260604
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#endif
/** Wraps (or simulates) `__has_builtin`. */
sed -i s/RUBY3/RBIMPL/g Devs do not love "3". The only exception is RUBY3_KEYWORDS in parse.y, which seems unrelated to our interests.
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#if defined(RBIMPL_HAVE___HAS_BUILTIN)
# define RBIMPL_HAS_BUILTIN(_) __has_builtin(_)
Merge pull request #2991 from shyouhei/ruby.h Split ruby.h
2020-04-08 00:28:13 -04:00
sed -i s/RUBY3/RBIMPL/g Devs do not love "3". The only exception is RUBY3_KEYWORDS in parse.y, which seems unrelated to our interests.
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#elif RBIMPL_COMPILER_IS(GCC)
Merge pull request #2991 from shyouhei/ruby.h Split ruby.h
2020-04-08 00:28:13 -04:00
# /* :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 */
get rid of #pragma GCC diagnostic ignored "-Wundef" Use of TOKEN_PASTE was a bad idea at the first place. Just use ## everywhere. Nobody practically lacks token pasting.
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# define RBIMPL_HAS_BUILTIN(_) (RBIMPL_HAS_BUILTIN_ ## _)
sed -i s/RUBY3/RBIMPL/g Devs do not love "3". The only exception is RUBY3_KEYWORDS in parse.y, which seems unrelated to our interests.
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# define RBIMPL_HAS_BUILTIN___builtin_add_overflow RBIMPL_COMPILER_SINCE(GCC, 5, 1, 0)
# define RBIMPL_HAS_BUILTIN___builtin_alloca RBIMPL_COMPILER_SINCE(GCC, 0, 0, 0)
# define RBIMPL_HAS_BUILTIN___builtin_alloca_with_align RBIMPL_COMPILER_SINCE(GCC, 6, 1, 0)
Fix -Wundef warnings for RBIMPL_HAS_BUILTIN * See [Feature #17752] * Defining explicitly to 0 seems the best solution, see https://github.com/ruby/ruby/pull/4428 * For example: ./include/ruby/internal/has/builtin.h:49:33: error: "RBIMPL_HAS_BUILTIN___builtin_assume" is not defined, evaluates to 0 [-Werror=undef] 49 | # define RBIMPL_HAS_BUILTIN(_) (RBIMPL_HAS_BUILTIN_ ## _) | ^~~~~~~~~~~~~~~~~~~ ./include/ruby/internal/assume.h:75:7: note: in expansion of macro ‘RBIMPL_HAS_BUILTIN’ 75 | #elif RBIMPL_HAS_BUILTIN(__builtin_assume) | ^~~~~~~~~~~~~~~~~~
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# define RBIMPL_HAS_BUILTIN___builtin_assume 0
Merge pull request #2991 from shyouhei/ruby.h Split ruby.h
2020-04-08 00:28:13 -04:00
# /* See http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52624 for bswap16. */
sed -i s/RUBY3/RBIMPL/g Devs do not love "3". The only exception is RUBY3_KEYWORDS in parse.y, which seems unrelated to our interests.
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# define RBIMPL_HAS_BUILTIN___builtin_bswap16 RBIMPL_COMPILER_SINCE(GCC, 4, 8, 0)
# define RBIMPL_HAS_BUILTIN___builtin_bswap32 RBIMPL_COMPILER_SINCE(GCC, 3, 6, 0)
# define RBIMPL_HAS_BUILTIN___builtin_bswap64 RBIMPL_COMPILER_SINCE(GCC, 3, 6, 0)
# define RBIMPL_HAS_BUILTIN___builtin_clz RBIMPL_COMPILER_SINCE(GCC, 3, 6, 0)
# define RBIMPL_HAS_BUILTIN___builtin_clzl RBIMPL_COMPILER_SINCE(GCC, 3, 6, 0)
# define RBIMPL_HAS_BUILTIN___builtin_clzll RBIMPL_COMPILER_SINCE(GCC, 3, 6, 0)
# define RBIMPL_HAS_BUILTIN___builtin_constant_p RBIMPL_COMPILER_SINCE(GCC, 2,95, 3)
# define RBIMPL_HAS_BUILTIN___builtin_ctz RBIMPL_COMPILER_SINCE(GCC, 3, 6, 0)
# define RBIMPL_HAS_BUILTIN___builtin_ctzl RBIMPL_COMPILER_SINCE(GCC, 3, 6, 0)
# define RBIMPL_HAS_BUILTIN___builtin_ctzll RBIMPL_COMPILER_SINCE(GCC, 3, 6, 0)
# define RBIMPL_HAS_BUILTIN___builtin_expect RBIMPL_COMPILER_SINCE(GCC, 3, 0, 0)
# define RBIMPL_HAS_BUILTIN___builtin_mul_overflow RBIMPL_COMPILER_SINCE(GCC, 5, 1, 0)
# define RBIMPL_HAS_BUILTIN___builtin_mul_overflow_p RBIMPL_COMPILER_SINCE(GCC, 7, 0, 0)
# define RBIMPL_HAS_BUILTIN___builtin_popcount RBIMPL_COMPILER_SINCE(GCC, 3, 6, 0)
# define RBIMPL_HAS_BUILTIN___builtin_popcountl RBIMPL_COMPILER_SINCE(GCC, 3, 6, 0)
# define RBIMPL_HAS_BUILTIN___builtin_popcountll RBIMPL_COMPILER_SINCE(GCC, 3, 6, 0)
Fix -Wundef warnings for RBIMPL_HAS_BUILTIN * See [Feature #17752] * Defining explicitly to 0 seems the best solution, see https://github.com/ruby/ruby/pull/4428 * For example: ./include/ruby/internal/has/builtin.h:49:33: error: "RBIMPL_HAS_BUILTIN___builtin_assume" is not defined, evaluates to 0 [-Werror=undef] 49 | # define RBIMPL_HAS_BUILTIN(_) (RBIMPL_HAS_BUILTIN_ ## _) | ^~~~~~~~~~~~~~~~~~~ ./include/ruby/internal/assume.h:75:7: note: in expansion of macro ‘RBIMPL_HAS_BUILTIN’ 75 | #elif RBIMPL_HAS_BUILTIN(__builtin_assume) | ^~~~~~~~~~~~~~~~~~
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# define RBIMPL_HAS_BUILTIN___builtin_rotateleft32 0
# define RBIMPL_HAS_BUILTIN___builtin_rotateleft64 0
# define RBIMPL_HAS_BUILTIN___builtin_rotateright32 0
# define RBIMPL_HAS_BUILTIN___builtin_rotateright64 0
sed -i s/RUBY3/RBIMPL/g Devs do not love "3". The only exception is RUBY3_KEYWORDS in parse.y, which seems unrelated to our interests.
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# define RBIMPL_HAS_BUILTIN___builtin_sub_overflow RBIMPL_COMPILER_SINCE(GCC, 5, 1, 0)
# define RBIMPL_HAS_BUILTIN___builtin_unreachable RBIMPL_COMPILER_SINCE(GCC, 4, 5, 0)
Merge pull request #2991 from shyouhei/ruby.h Split ruby.h
2020-04-08 00:28:13 -04:00
# /* Note that "0, 0, 0" might be inaccurate. */
sed -i s/RUBY3/RBIMPL/g Devs do not love "3". The only exception is RUBY3_KEYWORDS in parse.y, which seems unrelated to our interests.
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#elif RBIMPL_COMPILER_IS(MSVC)
Merge pull request #2991 from shyouhei/ruby.h Split ruby.h
2020-04-08 00:28:13 -04:00
# /* MSVC has UNREACHABLE, but that is not __builtin_unreachable. */
sed -i s/RUBY3/RBIMPL/g Devs do not love "3". The only exception is RUBY3_KEYWORDS in parse.y, which seems unrelated to our interests.
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# define RBIMPL_HAS_BUILTIN(_) 0
Merge pull request #2991 from shyouhei/ruby.h Split ruby.h
2020-04-08 00:28:13 -04:00
#else
# /* Take config.h definition when available */
get rid of #pragma GCC diagnostic ignored "-Wundef" Use of TOKEN_PASTE was a bad idea at the first place. Just use ## everywhere. Nobody practically lacks token pasting.
2021-04-09 04:56:43 -04:00
# define RBIMPL_HAS_BUILTIN(_) ((RBIMPL_HAS_BUILTIN_ ## _)+0)
sed -i s/RUBY3/RBIMPL/g Devs do not love "3". The only exception is RUBY3_KEYWORDS in parse.y, which seems unrelated to our interests.
2020-05-04 02:52:56 -04:00
# define RBIMPL_HAS_BUILTIN___builtin_add_overflow HAVE_BUILTIN___BUILTIN_ADD_OVERFLOW
Fix -Wundef warnings for RBIMPL_HAS_BUILTIN * See [Feature #17752] * Defining explicitly to 0 seems the best solution, see https://github.com/ruby/ruby/pull/4428 * For example: ./include/ruby/internal/has/builtin.h:49:33: error: "RBIMPL_HAS_BUILTIN___builtin_assume" is not defined, evaluates to 0 [-Werror=undef] 49 | # define RBIMPL_HAS_BUILTIN(_) (RBIMPL_HAS_BUILTIN_ ## _) | ^~~~~~~~~~~~~~~~~~~ ./include/ruby/internal/assume.h:75:7: note: in expansion of macro ‘RBIMPL_HAS_BUILTIN’ 75 | #elif RBIMPL_HAS_BUILTIN(__builtin_assume) | ^~~~~~~~~~~~~~~~~~
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# define RBIMPL_HAS_BUILTIN___builtin_alloca 0
sed -i s/RUBY3/RBIMPL/g Devs do not love "3". The only exception is RUBY3_KEYWORDS in parse.y, which seems unrelated to our interests.
2020-05-04 02:52:56 -04:00
# define RBIMPL_HAS_BUILTIN___builtin_alloca_with_align HAVE_BUILTIN___BUILTIN_ALLOCA_WITH_ALIGN
Fix -Wundef warnings for RBIMPL_HAS_BUILTIN * See [Feature #17752] * Defining explicitly to 0 seems the best solution, see https://github.com/ruby/ruby/pull/4428 * For example: ./include/ruby/internal/has/builtin.h:49:33: error: "RBIMPL_HAS_BUILTIN___builtin_assume" is not defined, evaluates to 0 [-Werror=undef] 49 | # define RBIMPL_HAS_BUILTIN(_) (RBIMPL_HAS_BUILTIN_ ## _) | ^~~~~~~~~~~~~~~~~~~ ./include/ruby/internal/assume.h:75:7: note: in expansion of macro ‘RBIMPL_HAS_BUILTIN’ 75 | #elif RBIMPL_HAS_BUILTIN(__builtin_assume) | ^~~~~~~~~~~~~~~~~~
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# define RBIMPL_HAS_BUILTIN___builtin_assume 0
sed -i s/RUBY3/RBIMPL/g Devs do not love "3". The only exception is RUBY3_KEYWORDS in parse.y, which seems unrelated to our interests.
2020-05-04 02:52:56 -04:00
# define RBIMPL_HAS_BUILTIN___builtin_assume_aligned HAVE_BUILTIN___BUILTIN_ASSUME_ALIGNED
# define RBIMPL_HAS_BUILTIN___builtin_bswap16 HAVE_BUILTIN___BUILTIN_BSWAP16
# define RBIMPL_HAS_BUILTIN___builtin_bswap32 HAVE_BUILTIN___BUILTIN_BSWAP32
# define RBIMPL_HAS_BUILTIN___builtin_bswap64 HAVE_BUILTIN___BUILTIN_BSWAP64
# define RBIMPL_HAS_BUILTIN___builtin_clz HAVE_BUILTIN___BUILTIN_CLZ
# define RBIMPL_HAS_BUILTIN___builtin_clzl HAVE_BUILTIN___BUILTIN_CLZL
# define RBIMPL_HAS_BUILTIN___builtin_clzll HAVE_BUILTIN___BUILTIN_CLZLL
# define RBIMPL_HAS_BUILTIN___builtin_constant_p HAVE_BUILTIN___BUILTIN_CONSTANT_P
# define RBIMPL_HAS_BUILTIN___builtin_ctz HAVE_BUILTIN___BUILTIN_CTZ
Fix -Wundef warnings for RBIMPL_HAS_BUILTIN * See [Feature #17752] * Defining explicitly to 0 seems the best solution, see https://github.com/ruby/ruby/pull/4428 * For example: ./include/ruby/internal/has/builtin.h:49:33: error: "RBIMPL_HAS_BUILTIN___builtin_assume" is not defined, evaluates to 0 [-Werror=undef] 49 | # define RBIMPL_HAS_BUILTIN(_) (RBIMPL_HAS_BUILTIN_ ## _) | ^~~~~~~~~~~~~~~~~~~ ./include/ruby/internal/assume.h:75:7: note: in expansion of macro ‘RBIMPL_HAS_BUILTIN’ 75 | #elif RBIMPL_HAS_BUILTIN(__builtin_assume) | ^~~~~~~~~~~~~~~~~~
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# define RBIMPL_HAS_BUILTIN___builtin_ctzl 0
sed -i s/RUBY3/RBIMPL/g Devs do not love "3". The only exception is RUBY3_KEYWORDS in parse.y, which seems unrelated to our interests.
2020-05-04 02:52:56 -04:00
# define RBIMPL_HAS_BUILTIN___builtin_ctzll HAVE_BUILTIN___BUILTIN_CTZLL
# define RBIMPL_HAS_BUILTIN___builtin_expect HAVE_BUILTIN___BUILTIN_EXPECT
# define RBIMPL_HAS_BUILTIN___builtin_mul_overflow HAVE_BUILTIN___BUILTIN_MUL_OVERFLOW
# define RBIMPL_HAS_BUILTIN___builtin_mul_overflow_p HAVE_BUILTIN___BUILTIN_MUL_OVERFLOW_P
# define RBIMPL_HAS_BUILTIN___builtin_popcount HAVE_BUILTIN___BUILTIN_POPCOUNT
Fix -Wundef warnings for RBIMPL_HAS_BUILTIN * See [Feature #17752] * Defining explicitly to 0 seems the best solution, see https://github.com/ruby/ruby/pull/4428 * For example: ./include/ruby/internal/has/builtin.h:49:33: error: "RBIMPL_HAS_BUILTIN___builtin_assume" is not defined, evaluates to 0 [-Werror=undef] 49 | # define RBIMPL_HAS_BUILTIN(_) (RBIMPL_HAS_BUILTIN_ ## _) | ^~~~~~~~~~~~~~~~~~~ ./include/ruby/internal/assume.h:75:7: note: in expansion of macro ‘RBIMPL_HAS_BUILTIN’ 75 | #elif RBIMPL_HAS_BUILTIN(__builtin_assume) | ^~~~~~~~~~~~~~~~~~
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# define RBIMPL_HAS_BUILTIN___builtin_popcountl 0
# define RBIMPL_HAS_BUILTIN___builtin_rotateleft32 0
# define RBIMPL_HAS_BUILTIN___builtin_rotateleft64 0
# define RBIMPL_HAS_BUILTIN___builtin_rotateright32 0
# define RBIMPL_HAS_BUILTIN___builtin_rotateright64 0
sed -i s/RUBY3/RBIMPL/g Devs do not love "3". The only exception is RUBY3_KEYWORDS in parse.y, which seems unrelated to our interests.
2020-05-04 02:52:56 -04:00
# define RBIMPL_HAS_BUILTIN___builtin_popcountll HAVE_BUILTIN___BUILTIN_POPCOUNTLL
# define RBIMPL_HAS_BUILTIN___builtin_sub_overflow HAVE_BUILTIN___BUILTIN_SUB_OVERFLOW
Merge pull request #2991 from shyouhei/ruby.h Split ruby.h
2020-04-08 00:28:13 -04:00
# if defined(UNREACHABLE)
sed -i s/RUBY3/RBIMPL/g Devs do not love "3". The only exception is RUBY3_KEYWORDS in parse.y, which seems unrelated to our interests.
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# define RBIMPL_HAS_BUILTIN___builtin_unreachable 1
Fix -Wundef warnings for RBIMPL_HAS_BUILTIN * See [Feature #17752] * Defining explicitly to 0 seems the best solution, see https://github.com/ruby/ruby/pull/4428 * For example: ./include/ruby/internal/has/builtin.h:49:33: error: "RBIMPL_HAS_BUILTIN___builtin_assume" is not defined, evaluates to 0 [-Werror=undef] 49 | # define RBIMPL_HAS_BUILTIN(_) (RBIMPL_HAS_BUILTIN_ ## _) | ^~~~~~~~~~~~~~~~~~~ ./include/ruby/internal/assume.h:75:7: note: in expansion of macro ‘RBIMPL_HAS_BUILTIN’ 75 | #elif RBIMPL_HAS_BUILTIN(__builtin_assume) | ^~~~~~~~~~~~~~~~~~
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# else
# define RBIMPL_HAS_BUILTIN___builtin_unreachable 0
Merge pull request #2991 from shyouhei/ruby.h Split ruby.h
2020-04-08 00:28:13 -04:00
# endif
#endif
add #include guard hack According to MSVC manual (*1), cl.exe can skip including a header file when that: - contains #pragma once, or - starts with #ifndef, or - starts with #if ! defined. GCC has a similar trick (*2), but it acts more stricter (e. g. there must be _no tokens_ outside of #ifndef...#endif). Sun C lacked #pragma once for a looong time. Oracle Developer Studio 12.5 finally implemented it, but we cannot assume such recent version. This changeset modifies header files so that each of them include strictly one #ifndef...#endif. I believe this is the most portable way to trigger compiler optimizations. [Bug #16770] *1: https://docs.microsoft.com/en-us/cpp/preprocessor/once *2: https://gcc.gnu.org/onlinedocs/cppinternals/Guard-Macros.html
2020-04-10 01:11:40 -04:00
sed -i s/RUBY3/RBIMPL/g Devs do not love "3". The only exception is RUBY3_KEYWORDS in parse.y, which seems unrelated to our interests.
2020-05-04 02:52:56 -04:00
#endif /* RBIMPL_HAS_BUILTIN_H */
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