diff options
Diffstat (limited to 'gcc-4.8/libitm/acinclude.m4')
| -rw-r--r-- | gcc-4.8/libitm/acinclude.m4 | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/gcc-4.8/libitm/acinclude.m4 b/gcc-4.8/libitm/acinclude.m4 index de1c8f1ec..ca7e0a921 100644 --- a/gcc-4.8/libitm/acinclude.m4 +++ b/gcc-4.8/libitm/acinclude.m4 @@ -121,6 +121,20 @@ i[[34567]]86 | x86_64) AC_DEFINE(HAVE_AS_RTM, 1, [Define to 1 if the assembler supports RTM.]) fi ;; +esac]) + +dnl Check if as supports HTM instructions. +AC_DEFUN([LIBITM_CHECK_AS_HTM], [ +case "${target_cpu}" in +powerpc*) + AC_CACHE_CHECK([if the assembler supports HTM], libitm_cv_as_htm, [ + AC_TRY_COMPILE([], [asm("tbegin. 0; tend. 0");], + [libitm_cv_as_htm=yes], [libitm_cv_as_htm=no]) + ]) + if test x$libitm_cv_as_htm = xyes; then + AC_DEFINE(HAVE_AS_HTM, 1, [Define to 1 if the assembler supports HTM.]) + fi + ;; s390*) AC_CACHE_CHECK([if the assembler supports HTM], libitm_cv_as_htm, [ save_CFLAGS="$CFLAGS" |