/* Set of hooks for performing move_op and find_used_regs routines with
code_motion_path_driver. */
-struct code_motion_path_driver_info_def move_op_hooks, fur_hooks;
+extern struct code_motion_path_driver_info_def move_op_hooks, fur_hooks;
/* True if/when we want to emulate Haifa scheduler in the common code.
This is used in sched_rgn_local_init and in various places in
if (INSN_P (next)
&& JUMP_P (next)
&& BLOCK_FOR_INSN (next) == BLOCK_FOR_INSN (place_to_insert))
- seqno = INSN_SEQNO (next);
+ {
+ gcc_assert (INSN_SCHED_TIMES (next) == 0);
+ seqno = INSN_SEQNO (next);
+ }
else if (INSN_SEQNO (join_point) > 0)
seqno = INSN_SEQNO (join_point);
else
- seqno = get_seqno_by_preds (place_to_insert);
+ {
+ seqno = get_seqno_by_preds (place_to_insert);
+
+ /* Sometimes the fences can move in such a way that there will be
+ no instructions with positive seqno around this bookkeeping.
+ This means that there will be no way to get to it by a regular
+ fence movement. Never mind because we pick up such pieces for
+ rescheduling anyways, so any positive value will do for now. */
+ if (seqno < 0)
+ {
+ gcc_assert (pipelining_p);
+ seqno = 1;
+ }
+ }
gcc_assert (seqno > 0);
return seqno;