------- Comment #3 from jakub at gcc dot gnu dot org 2007-11-02 23:17 -------
Fixed for ppc64.
I haven't added the requested stop at the start of bb, Maxim, if you want to
do that, please go ahead.
Also, I have just found that this testcase fails on ia64 native for a different
reason (wonder why I haven't reproduced that with cross ia64 before).
On ia64 the problem is that the backend sets DO_SPECULATION in flags
in ia64_set_sched_flags - mflag_sched_ar_data_spec is 1 by default and
when user asks for -fsched-stalled-insns=5 (or =0), then
/* Perform a few consistency checks of flags in different data structures. */
static void
check_sched_flags (void)
{
unsigned int f = current_sched_info->flags;
if (flag_sched_stalled_insns)
gcc_assert (!(f & DO_SPECULATION));
if (f & DO_SPECULATION)
gcc_assert (!flag_sched_stalled_insns
&& spec_info
&& spec_info->mask);
}
fails. It compiles with -O2 -fno-sched-stalled-insns or -O2
-fsched-stalled-insns=0 -mno-sched-ar-data-spec
I see no code that would try to do anything to satisfy this assert, should
ia64 disallow -fsched-stalled-insns by setting flag_sched_stalled_insns = 0?
Or if it is non-zero don't set DO_SPECULATION? Something else?
--
jakub at gcc dot gnu dot org changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |mkuvyrkov at gcc dot gnu dot
| |org
AssignedTo|jakub at gcc dot gnu dot org|unassigned at gcc dot gnu
| |dot org
Status|ASSIGNED |NEW
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=33670
