1 dnl check for gcc's "labels as values" feature
2 AC_DEFUN([AC_C_LABELS_AS_VALUES],
3 [AC_CACHE_CHECK([labels as values], ac_cv_labels_as_values,
8 static void *label[] = { &&l1, &&l2 };
15 ac_cv_labels_as_values=yes,
16 ac_cv_labels_as_values=no)])
17 if test "$ac_cv_labels_as_values" = yes; then
18 AC_DEFINE([HAVE_LABELS_AS_VALUES], [],
19 [Define if compiler supports gcc's "labels as values" (aka computed goto)
20 feature, used to speed up instruction dispatch in the interpreter.])