[Bug target/48629] New: ICE on gcc.dg/pr42389.c on ia64-*-* with -fsched-pressure

["sje at cup dot hp.com" <gcc-bugzilla at gcc dot gnu dot org>]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=48629

           Summary: ICE on gcc.dg/pr42389.c on ia64-*-* with
                    -fsched-pressure
           Product: gcc
           Version: 4.7.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: target
        AssignedTo: unassigned@gcc.gnu.org
        ReportedBy: sje@cup.hp.com


The test gcc.dg/pr42389.c started failing at r171845 on IA64 HP-UX and Linux.

obj_gcc/gcc/cc1 -O2 -fselective-scheduling -fsel-sched-pipelining
-fsched-pressure -quiet pr42389.c


pr42389.c: In function 'reset_path_costs':
pr42389.c:49:1: internal compiler error: in bundling, at
config/ia64/ia64.c:8842
Please submit a full bug report,
with preprocessed source if appropriate.
See <http://gcc.gnu.org/bugs.html> for instructions.

ChangeLog:


2011-04-01  Bernd Schmidt  <bernds@codesourcery.com>

        * dwarf2out.h (dwarf2out_frame_debug_init): Declare.
        * dwarf2out.c (dwarf2out_frame_debug_init): New function, broken
        out of ...
        (dwarf2out_frame_debug): ... here. Don't handle a NULL argument.
        * final.c (final_start_function): Call the new function rather
        than using a NULL argument for dwarf2out_frame_debug.

        * ifcvt.c (cond_exec_process_insns): Disallow converting a block
        that contains the prologue.

        * haifa-sched.c (queue_insn): New arg REASON.  All callers
        changed.  Print it in debugging output.

        * sched-ebb.c (schedule_ebbs): Honor the BB_DISABLE_SCHEDULE flag.

        * sched-ebb.c (begin_schedule_ready): Remove second argument.
        Split most of the code into...
        (begin_move_insn): ... here.  New function.
        (ebb_sched_info): Add a pointer to it.
        * haifa-sched.c (scheduled_insns): New static variable.
        (sched_extend_ready_list): Allocate it.
        (schedule_block): Use it to record the order of scheduled insns.
        Perform RTL changes to move insns only after all scheduling
        decisions have been made.
        * modulo-sched.c (sms_sched_haifa_sched_info): Add NULL entry for the
        begin_move_insn field.
        * sel-sched-ir.c (sched_sel_haifa_sched_info): Likewise.
        * sched-int.h (struct haifa_sched_info): Remove second argument
        from begin_schedule_ready hook.  Add new member begin_move_insn.
        * sched-rgn.c (begin_schedule_ready): Remove second argument.
        (rgn_const_sched_info): Add NULL entry for the begin_move_insn field.

        * haifa-sched.c (prune_ready_list): New function, broken out of
        schedule_block.
        (schedule_block): Use it.