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Remove JE_FORCE_SYNC_COMPARE_AND_SWAP_[48].

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These macros have been unused since
d4ac7582f3 (Introduce a backport of C11
atomics).
This commit is contained in:
Jason Evans 2019-02-22 11:10:11 -08:00
parent cbdb1807ce
commit 775fe302a7
2 changed files with 0 additions and 50 deletions
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34
configure.ac
View File

@ -2005,40 +2005,6 @@ case "${host_cpu}" in
esac esac
fi fi
dnl ============================================================================
dnl Check whether __sync_{add,sub}_and_fetch() are available despite
dnl __GCC_HAVE_SYNC_COMPARE_AND_SWAP_n macros being undefined.
AC_DEFUN([JE_SYNC_COMPARE_AND_SWAP_CHECK],[
AC_CACHE_CHECK([whether to force $1-bit __sync_{add,sub}_and_fetch()],
[je_cv_sync_compare_and_swap_$2],
[AC_LINK_IFELSE([AC_LANG_PROGRAM([
#include <stdint.h>
],
[
#ifndef __GCC_HAVE_SYNC_COMPARE_AND_SWAP_$2
{
uint$1_t x$1 = 0;
__sync_add_and_fetch(&x$1, 42);
__sync_sub_and_fetch(&x$1, 1);
}
#else
#error __GCC_HAVE_SYNC_COMPARE_AND_SWAP_$2 is defined, no need to force
#endif
])],
[je_cv_sync_compare_and_swap_$2=yes],
[je_cv_sync_compare_and_swap_$2=no])])
if test "x${je_cv_sync_compare_and_swap_$2}" = "xyes" ; then
AC_DEFINE([JE_FORCE_SYNC_COMPARE_AND_SWAP_$2], [ ])
fi
])
if test "x${je_cv_atomic9}" != "xyes" -a "x${je_cv_osatomic}" != "xyes" ; then
JE_SYNC_COMPARE_AND_SWAP_CHECK(32, 4)
JE_SYNC_COMPARE_AND_SWAP_CHECK(64, 8)
fi
dnl ============================================================================ dnl ============================================================================
dnl Check for __builtin_clz() and __builtin_clzl(). dnl Check for __builtin_clz() and __builtin_clzl().

16
include/jemalloc/internal/jemalloc_internal_defs.h.in
View File

@ -52,22 +52,6 @@
/* Defined if GCC __sync atomics are available. */ /* Defined if GCC __sync atomics are available. */
#undef JEMALLOC_GCC_SYNC_ATOMICS #undef JEMALLOC_GCC_SYNC_ATOMICS
/*
* Defined if __sync_add_and_fetch(uint32_t *, uint32_t) and
* __sync_sub_and_fetch(uint32_t *, uint32_t) are available, despite
* __GCC_HAVE_SYNC_COMPARE_AND_SWAP_4 not being defined (which means the
* functions are defined in libgcc instead of being inlines).
*/
#undef JE_FORCE_SYNC_COMPARE_AND_SWAP_4
/*
* Defined if __sync_add_and_fetch(uint64_t *, uint64_t) and
* __sync_sub_and_fetch(uint64_t *, uint64_t) are available, despite
* __GCC_HAVE_SYNC_COMPARE_AND_SWAP_8 not being defined (which means the
* functions are defined in libgcc instead of being inlines).
*/
#undef JE_FORCE_SYNC_COMPARE_AND_SWAP_8
/* /*
* Defined if __builtin_clz() and __builtin_clzl() are available. * Defined if __builtin_clz() and __builtin_clzl() are available.
*/ */