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internal/bits.h rework

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Improving readability by converting some macros into inline functions.
Also improved support for recent x86_64 processors, which have better
instructions for the purposes.
This commit is contained in:
卜部昌平 2019-12-02 15:50:11 +09:00
parent 0958e19ffb
commit 64ec438b5b
Notes: git 2019-12-26 20:46:07 +09:00
2 changed files with 445 additions and 192 deletions
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73
internal/compilers.h
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@ -84,7 +84,78 @@
# * __has_builtin only since GCC 10. This section can be made more
# * granular. */
# /* https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66970 */
# define __has_builtin(...) GCC_VERSION_SINCE(0, 0, 0)
# define __has_builtin(...) __has_builtin_##__VA_ARGS__
# define __has_builtin____builtin_bswap16 GCC_VERSION_SINCE(4, 8, 0) /* http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52624 */
# define __has_builtin____builtin_bswap32 GCC_VERSION_SINCE(3, 6, 0)
# define __has_builtin____builtin_bswap64 GCC_VERSION_SINCE(3, 6, 0)
# define __has_builtin____builtin_clz GCC_VERSION_SINCE(3, 6, 0)
# define __has_builtin____builtin_clzl GCC_VERSION_SINCE(3, 6, 0)
# define __has_builtin____builtin_clzll GCC_VERSION_SINCE(3, 6, 0)
# define __has_builtin____builtin_ctz GCC_VERSION_SINCE(3, 6, 0)
# define __has_builtin____builtin_ctzl GCC_VERSION_SINCE(3, 6, 0)
# define __has_builtin____builtin_ctzll GCC_VERSION_SINCE(3, 6, 0)
# define __has_builtin____builtin_mul_overflow GCC_VERSION_SINCE(5, 0, 0)
# define __has_builtin____builtin_mul_overflow_p GCC_VERSION_SINCE(7, 0, 0)
# define __has_builtin____builtin_popcount GCC_VERSION_SINCE(3, 6, 0)
# define __has_builtin____builtin_popcountl GCC_VERSION_SINCE(3, 6, 0)
# define __has_builtin____builtin_popcountll GCC_VERSION_SINCE(3, 6, 0)
# /* Take config.h definition when available */
# ifdef HAVE_BUILTIN____BUILTIN_BSWAP16
# undef __has_builtin____builtin_bswap16
# define __has_builtin____builtin_bswap16 HAVE_BUILTIN____BUILTIN_BSWAP16
# endif
# ifdef HAVE_BUILTIN____BUILTIN_BSWAP32
# undef __has_builtin____builtin_bswap32
# define __has_builtin____builtin_bswap16 HAVE_BUILTIN____BUILTIN_BSWAP32
# endif
# ifdef HAVE_BUILTIN____BUILTIN_BSWAP64
# undef __has_builtin____builtin_bswap64
# define __has_builtin____builtin_bswap64 HAVE_BUILTIN____BUILTIN_BSWAP64
# endif
# ifdef HAVE_BUILTIN____BUILTIN_CLZ
# undef __has_builtin____builtin_clz
# define __has_builtin____builtin_clz HAVE_BUILTIN____BUILTIN_CLZ
# endif
# ifdef HAVE_BUILTIN____BUILTIN_CLZL
# undef __has_builtin____builtin_clzl
# define __has_builtin____builtin_clzl HAVE_BUILTIN____BUILTIN_CLZL
# endif
# ifdef HAVE_BUILTIN____BUILTIN_CLZLL
# undef __has_builtin____builtin_clzll
# define __has_builtin____builtin_clzll HAVE_BUILTIN____BUILTIN_CLZLL
# endif
# ifdef HAVE_BUILTIN____BUILTIN_CTZ
# undef __has_builtin____builtin_ctz
# define __has_builtin____builtin_ctz HAVE_BUILTIN____BUILTIN_CTZ
# endif
# ifdef HAVE_BUILTIN____BUILTIN_CTZL
# undef __has_builtin____builtin_ctzl
# define __has_builtin____builtin_ctzl HAVE_BUILTIN____BUILTIN_CTZL
# endif
# ifdef HAVE_BUILTIN____BUILTIN_CTZLL
# undef __has_builtin____builtin_ctzll
# define __has_builtin____builtin_ctzll HAVE_BUILTIN____BUILTIN_CTZLL
# endif
# ifdef HAVE_BUILTIN____BUILTIN_MUL_OVERFLOW
# undef __has_builtin____builtin_mul_overflow
# define __has_builtin____builtin_mul_overflow HAVE_BUILTIN____BUILTIN_MUL_OVERFLOW
# endif
# ifdef HAVE_BUILTIN____BUILTIN_MUL_OVERFLOW_P
# undef __has_builtin____builtin_mul_overflow_p
# define __has_builtin____builtin_mul_overflow_p HAVE_BUILTIN____BUILTIN_MUL_OVERFLOW_P
# endif
# ifdef HAVE_BUILTIN____BUILTIN_POPCOUNT
# undef __has_builtin____builtin_popcount
# define __has_builtin____builtin_popcount HAVE_BUILTIN____BUILTIN_POPCOUNT
# endif
# ifdef HAVE_BUILTIN____BUILTIN_POPCOUNTL
# undef __has_builtin____builtin_popcountl
# define __has_builtin____builtin_popcountl HAVE_BUILTIN____BUILTIN_POPCOUNTL
# endif
# ifdef HAVE_BUILTIN____BUILTIN_POPCOUNTLL
# undef __has_builtin____builtin_popcountll
# define __has_builtin____builtin_popcountll HAVE_BUILTIN____BUILTIN_POPCOUNTLL
# endif
#endif
#ifndef __has_feature