http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49942
--- Comment #9 from jphartmann at gmail dot com <jphartmann at gmail dot com> 2011-08-02 13:18:47 UTC --- That is good to know. However, this problem is with -fexec-charset=IBM-1047. You cannot run the output of that on the ASCII z/Linux. Can I trouble you to send me your .s file with -O2 for the ASCII platform? That should let me spot any differences. Martin has assured me that jnhe generates a mask of 5, and I'm sure that is what it does in other contexts.