Marginally reduce the number of calls to arch_get_irn_reg_class().
[libfirm] / ir / obstack_win /
drwxr-xr-x   ..
-rw-r--r-- 17789 obstack.c
-rw-r--r-- 22951 obstack.h
-rw-r--r-- 351 obstack_printf.c