Ruby: include/ruby/internal/has/builtin.h Source File

Ruby 3.4.7p58 (2025-10-08 revision 7a5688e2a27668e48f8d6ff4af5b2208b98a2f5e)

builtin.h
Go to the documentation of this file.
1#ifndef RBIMPL_HAS_BUILTIN_H /*-*-C++-*-vi:se ft=cpp:*/
2#define RBIMPL_HAS_BUILTIN_H
23#include "ruby/internal/config.h"
24#include "ruby/internal/compiler_since.h"
25
26#if defined(__has_builtin)
27# if RBIMPL_COMPILER_IS(Intel)
28# /* :TODO: Intel C Compiler has __has_builtin (since 19.1 maybe?), and is
29# * reportedly broken. We have to skip them. However the situation can
30# * change. They might improve someday. We need to revisit here later. */
31# elif RBIMPL_COMPILER_IS(GCC) && ! __has_builtin(__builtin_alloca)
32# /* FreeBSD's <sys/cdefs.h> defines its own *broken* version of
33# * __has_builtin. Cygwin copied that content to be a victim of the
34# * broken-ness. We don't take them into account. */
35# else
36# define RBIMPL_HAVE___HAS_BUILTIN 1
37# endif
38#endif
39
41#if defined(RBIMPL_HAVE___HAS_BUILTIN)
42# define RBIMPL_HAS_BUILTIN(_) __has_builtin(_)
43
44#elif RBIMPL_COMPILER_IS(GCC)
45# /* :FIXME: Historically GCC has had tons of builtins, but it implemented
46# * __has_builtin only since GCC 10. This section can be made more
47# * granular. */
48# /* https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66970 */
49# define RBIMPL_HAS_BUILTIN(_) (RBIMPL_HAS_BUILTIN_ ## _)
50# define RBIMPL_HAS_BUILTIN___builtin_add_overflow RBIMPL_COMPILER_SINCE(GCC, 5, 1, 0)
51# define RBIMPL_HAS_BUILTIN___builtin_add_overflow_p RBIMPL_COMPILER_SINCE(GCC, 7, 0, 0)
52# define RBIMPL_HAS_BUILTIN___builtin_alloca RBIMPL_COMPILER_SINCE(GCC, 0, 0, 0)
53# define RBIMPL_HAS_BUILTIN___builtin_alloca_with_align RBIMPL_COMPILER_SINCE(GCC, 6, 1, 0)
54# define RBIMPL_HAS_BUILTIN___builtin_assume 0
55# /* See http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52624 for bswap16. */
56# define RBIMPL_HAS_BUILTIN___builtin_bswap16 RBIMPL_COMPILER_SINCE(GCC, 4, 8, 0)
57#ifndef __OpenBSD__
58# define RBIMPL_HAS_BUILTIN___builtin_bswap32 RBIMPL_COMPILER_SINCE(GCC, 3, 6, 0)
59# define RBIMPL_HAS_BUILTIN___builtin_bswap64 RBIMPL_COMPILER_SINCE(GCC, 3, 6, 0)
60#endif
61# define RBIMPL_HAS_BUILTIN___builtin_clz RBIMPL_COMPILER_SINCE(GCC, 3, 6, 0)
62# define RBIMPL_HAS_BUILTIN___builtin_clzl RBIMPL_COMPILER_SINCE(GCC, 3, 6, 0)
63# define RBIMPL_HAS_BUILTIN___builtin_clzll RBIMPL_COMPILER_SINCE(GCC, 3, 6, 0)
64# define RBIMPL_HAS_BUILTIN___builtin_constant_p RBIMPL_COMPILER_SINCE(GCC, 2,95, 3)
65# define RBIMPL_HAS_BUILTIN___builtin_ctz RBIMPL_COMPILER_SINCE(GCC, 3, 6, 0)
66# define RBIMPL_HAS_BUILTIN___builtin_ctzl RBIMPL_COMPILER_SINCE(GCC, 3, 6, 0)
67# define RBIMPL_HAS_BUILTIN___builtin_ctzll RBIMPL_COMPILER_SINCE(GCC, 3, 6, 0)
68# define RBIMPL_HAS_BUILTIN___builtin_expect RBIMPL_COMPILER_SINCE(GCC, 3, 0, 0)
69# define RBIMPL_HAS_BUILTIN___builtin_mul_overflow RBIMPL_COMPILER_SINCE(GCC, 5, 1, 0)
70# define RBIMPL_HAS_BUILTIN___builtin_mul_overflow_p RBIMPL_COMPILER_SINCE(GCC, 7, 0, 0)
71# define RBIMPL_HAS_BUILTIN___builtin_popcount RBIMPL_COMPILER_SINCE(GCC, 3, 6, 0)
72# define RBIMPL_HAS_BUILTIN___builtin_popcountl RBIMPL_COMPILER_SINCE(GCC, 3, 6, 0)
73# define RBIMPL_HAS_BUILTIN___builtin_popcountll RBIMPL_COMPILER_SINCE(GCC, 3, 6, 0)
74# define RBIMPL_HAS_BUILTIN___builtin_rotateleft32 0
75# define RBIMPL_HAS_BUILTIN___builtin_rotateleft64 0
76# define RBIMPL_HAS_BUILTIN___builtin_rotateright32 0
77# define RBIMPL_HAS_BUILTIN___builtin_rotateright64 0
78# define RBIMPL_HAS_BUILTIN___builtin_sub_overflow RBIMPL_COMPILER_SINCE(GCC, 5, 1, 0)
79# define RBIMPL_HAS_BUILTIN___builtin_sub_overflow_p RBIMPL_COMPILER_SINCE(GCC, 7, 0, 0)
80# define RBIMPL_HAS_BUILTIN___builtin_unreachable RBIMPL_COMPILER_SINCE(GCC, 4, 5, 0)
81# /* Note that "0, 0, 0" might be inaccurate. */
82
83#else
84# /* Take config.h definition when available */
85# define RBIMPL_HAS_BUILTIN(_) ((RBIMPL_HAS_BUILTIN_ ## _)+0)
86# define RBIMPL_HAS_BUILTIN___builtin_add_overflow HAVE_BUILTIN___BUILTIN_ADD_OVERFLOW
87# define RBIMPL_HAS_BUILTIN___builtin_add_overflow_p HAVE_BUILTIN___BUILTIN_ADD_OVERFLOW_P
88# define RBIMPL_HAS_BUILTIN___builtin_alloca 0
89# define RBIMPL_HAS_BUILTIN___builtin_alloca_with_align HAVE_BUILTIN___BUILTIN_ALLOCA_WITH_ALIGN
90# define RBIMPL_HAS_BUILTIN___builtin_assume 0
91# define RBIMPL_HAS_BUILTIN___builtin_assume_aligned HAVE_BUILTIN___BUILTIN_ASSUME_ALIGNED
92# define RBIMPL_HAS_BUILTIN___builtin_bswap16 HAVE_BUILTIN___BUILTIN_BSWAP16
93# define RBIMPL_HAS_BUILTIN___builtin_bswap32 HAVE_BUILTIN___BUILTIN_BSWAP32
94# define RBIMPL_HAS_BUILTIN___builtin_bswap64 HAVE_BUILTIN___BUILTIN_BSWAP64
95# define RBIMPL_HAS_BUILTIN___builtin_clz HAVE_BUILTIN___BUILTIN_CLZ
96# define RBIMPL_HAS_BUILTIN___builtin_clzl HAVE_BUILTIN___BUILTIN_CLZL
97# define RBIMPL_HAS_BUILTIN___builtin_clzll HAVE_BUILTIN___BUILTIN_CLZLL
98# define RBIMPL_HAS_BUILTIN___builtin_constant_p HAVE_BUILTIN___BUILTIN_CONSTANT_P
99# define RBIMPL_HAS_BUILTIN___builtin_ctz HAVE_BUILTIN___BUILTIN_CTZ
100# define RBIMPL_HAS_BUILTIN___builtin_ctzl 0
101# define RBIMPL_HAS_BUILTIN___builtin_ctzll HAVE_BUILTIN___BUILTIN_CTZLL
102# define RBIMPL_HAS_BUILTIN___builtin_expect HAVE_BUILTIN___BUILTIN_EXPECT
103# define RBIMPL_HAS_BUILTIN___builtin_mul_overflow HAVE_BUILTIN___BUILTIN_MUL_OVERFLOW
104# define RBIMPL_HAS_BUILTIN___builtin_mul_overflow_p HAVE_BUILTIN___BUILTIN_MUL_OVERFLOW_P
105# define RBIMPL_HAS_BUILTIN___builtin_popcount HAVE_BUILTIN___BUILTIN_POPCOUNT
106# define RBIMPL_HAS_BUILTIN___builtin_popcountl 0
107# define RBIMPL_HAS_BUILTIN___builtin_rotateleft32 0
108# define RBIMPL_HAS_BUILTIN___builtin_rotateleft64 0
109# define RBIMPL_HAS_BUILTIN___builtin_rotateright32 0
110# define RBIMPL_HAS_BUILTIN___builtin_rotateright64 0
111# define RBIMPL_HAS_BUILTIN___builtin_popcountll HAVE_BUILTIN___BUILTIN_POPCOUNTLL
112# define RBIMPL_HAS_BUILTIN___builtin_sub_overflow HAVE_BUILTIN___BUILTIN_SUB_OVERFLOW
113# define RBIMPL_HAS_BUILTIN___builtin_sub_overflow_p HAVE_BUILTIN___BUILTIN_SUB_OVERFLOW_P
114# if defined(HAVE___BUILTIN_UNREACHABLE)
115# define RBIMPL_HAS_BUILTIN___builtin_unreachable 1
116# else
117# define RBIMPL_HAS_BUILTIN___builtin_unreachable 0
118# endif
119#endif
120
121#endif /* RBIMPL_HAS_BUILTIN_H */
compiler_since.h
Defines RBIMPL_COMPILER_SINCE.