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* configure.in: Check __builtin_popcountl, __builtin_bswap32 and

Browse source 
__builtin_bswap64.

* internal.h (swap32): Use the configure result for the condition to
  use __builtin_bswap32.
  (swap64): Use the configure result for the condition to use
  __builtin_bswap64.

* bignum.c (ones): Use the configure result for the condition to use
  __builtin_popcountl.
  (bary_unpack_internal): Use appropriate types for swap argument.



git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@41963 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
This commit is contained in:
akr 2013-07-14 14:28:33 +00:00
parent b0eacd027a
commit 240f3056aa
4 changed files with 33 additions and 6 deletions
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14
ChangeLog
View file

@ -1,3 +1,17 @@
Sun Jul 14 23:21:47 2013 Tanaka Akira <akr@fsij.org>
* configure.in: Check __builtin_popcountl, __builtin_bswap32 and
__builtin_bswap64.
* internal.h (swap32): Use the configure result for the condition to
use __builtin_bswap32.
(swap64): Use the configure result for the condition to use
__builtin_bswap64.
* bignum.c (ones): Use the configure result for the condition to use
__builtin_popcountl.
(bary_unpack_internal): Use appropriate types for swap argument.
Sun Jul 14 22:21:11 2013 Tanaka Akira <akr@fsij.org>
* bignum.c (bary_subb): Support xn < yn.

8
bignum.c
View file

@ -1137,19 +1137,19 @@ bary_unpack_internal(BDIGIT *bdigits, size_t num_bdigits, const void *words, siz
}
#if defined(HAVE_UINT16_T) && 2 <= SIZEOF_BDIGITS
if (wordsize == 2 && (uintptr_t)words % ALIGNOF(uint16_t) == 0) {
BDIGIT u = *(uint16_t *)buf;
uint16_t u = *(uint16_t *)buf;
return integer_unpack_single_bdigit(need_swap ? swap16(u) : u, sizeof(uint16_t), flags, dp);
}
#endif
#if defined(HAVE_UINT32_T) && 4 <= SIZEOF_BDIGITS
if (wordsize == 4 && (uintptr_t)words % ALIGNOF(uint32_t) == 0) {
BDIGIT u = *(uint32_t *)buf;
uint32_t u = *(uint32_t *)buf;
return integer_unpack_single_bdigit(need_swap ? swap32(u) : u, sizeof(uint32_t), flags, dp);
}
#endif
#if defined(HAVE_UINT64_T) && 8 <= SIZEOF_BDIGITS
if (wordsize == 8 && (uintptr_t)words % ALIGNOF(uint64_t) == 0) {
BDIGIT u = *(uint64_t *)buf;
uint64_t u = *(uint64_t *)buf;
return integer_unpack_single_bdigit(need_swap ? swap64(u) : u, sizeof(uint64_t), flags, dp);
}
#endif
@ -3307,7 +3307,7 @@ big_rshift(VALUE x, unsigned long shift)
static inline int
ones(register unsigned long x)
{
#if GCC_VERSION_SINCE(3, 4, 0)
#ifdef HAVE_BUILTIN___BUILTIN_POPCOUNTL
return __builtin_popcountl(x);
#else
# if SIZEOF_LONG == 8

13
configure.in
View file

@ -1838,6 +1838,19 @@ AC_CHECK_FUNCS(utimes)
AC_CHECK_FUNCS(wait4)
AC_CHECK_FUNCS(waitpid)
AC_DEFUN([RUBY_CHECK_BUILTIN_FUNC], [dnl
AC_CACHE_CHECK([for $1], AS_TR_SH(rb_cv_builtin_$1),
[AC_LINK_IFELSE(
[AC_LANG_PROGRAM([], [$2;])],
[AS_TR_SH(rb_cv_builtin_$1)=yes],
[AS_TR_SH(rb_cv_builtin_$1)=no])])
if test "${AS_TR_SH(rb_cv_builtin_$1)}" != no; then
AC_DEFINE(AS_TR_CPP(HAVE_BUILTIN_$1))
fi])
RUBY_CHECK_BUILTIN_FUNC(__builtin_popcountl, [__builtin_popcountl(0)])
RUBY_CHECK_BUILTIN_FUNC(__builtin_bswap32, [__builtin_bswap32(0)])
RUBY_CHECK_BUILTIN_FUNC(__builtin_bswap64, [__builtin_bswap64(0)])
# Some platform neet -lrt for clock_gettime, but the other don't.
if test x"$ac_cv_func_clock_gettime" != xyes; then
# glibc 2.17 moves clock_* functions from librt to the main C library.

4
internal.h
View file

@ -82,7 +82,7 @@ extern "C" {
#endif
#ifndef swap32
# if GCC_VERSION_SINCE(4,3,0)
# ifdef HAVE_BUILTIN___BUILTIN_BSWAP32
# define swap32(x) __builtin_bswap32(x)
# endif
#endif
@ -95,7 +95,7 @@ extern "C" {
#endif
#ifndef swap64
# if GCC_VERSION_SINCE(4,3,0)
# ifdef HAVE_BUILTIN___BUILTIN_BSWAP64
# define swap64(x) __builtin_bswap64(x)
# endif
#endif