diff options
Diffstat (limited to 'configure.ac')
| -rw-r--r-- | configure.ac | 13 |
1 files changed, 1 insertions, 12 deletions
diff --git a/configure.ac b/configure.ac index 010c8e6a25a..f5462ee7a03 100644 --- a/configure.ac +++ b/configure.ac @@ -1678,18 +1678,7 @@ case $host_cpu in fi ;; ppc*|powerpc*) - # On PPC, check if assembler supports LWARX instruction's mutex hint bit - AC_CACHE_CHECK([whether assembler supports lwarx hint bit], - [pgac_cv_have_ppc_mutex_hint], - [AC_COMPILE_IFELSE([AC_LANG_PROGRAM([], - [int a = 0; int *p = &a; int r; - __asm__ __volatile__ (" lwarx %0,0,%1,1\n" : "=&r"(r) : "r"(p));])], - [pgac_cv_have_ppc_mutex_hint=yes], - [pgac_cv_have_ppc_mutex_hint=no])]) - if test x"$pgac_cv_have_ppc_mutex_hint" = xyes ; then - AC_DEFINE(HAVE_PPC_LWARX_MUTEX_HINT, 1, [Define to 1 if the assembler supports PPC's LWARX mutex hint bit.]) - fi - # Check if compiler accepts "i"(x) when __builtin_constant_p(x). + # On PPC, check if compiler accepts "i"(x) when __builtin_constant_p(x). AC_CACHE_CHECK([whether __builtin_constant_p(x) implies "i"(x) acceptance], [pgac_cv_have_i_constraint__builtin_constant_p], [AC_COMPILE_IFELSE([AC_LANG_PROGRAM( |