------- Comment #8 from whaley at cs dot utsa dot edu 2007-06-28 14:18 ------- I've been doing further testing on the g5 (the only machine where I have local and root access), and this problem does not occur with stock gcc 4.1.1 either. Therefore, whatever problem is avoided by throwing -fno-schedule-insns was not in 4.1.1.
BTW, as on the Power5, the best kernel does not get all it's performance back by throwing this flag, even though the simplified example does. -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=32523