[Bug rtl-optimization/85410] ICE in create_block_for_bookkeeping, at sel-sched.c:4563

["asolokha at gmx dot com" <gcc-bugzilla at gcc dot gnu dot org>]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85410

--- Comment #2 from Arseny Solokha <asolokha at gmx dot com> ---
Here's another snippet. gcc-8.0.0-alpha20180422 snapshot (r259553) w/ r259563
applied ICEs when compiling it for x86_64 w/ -O2 (-O3, -Os)
-ftree-slp-vectorize -fschedule-insns -fsel-sched-pipelining
-fselective-scheduling -fvar-tracking-assignments -fno-tree-pre -fno-tree-dce
-fno-tree-ch -fno-move-loop-invariants:

int ce, jq;

int
vc (void)
{
  int g4 = 0;

  return g4;
}

void
sg (void)
{
  while (jq < 2)
    {
      int tv[] = { 1, 0, 0, 0, 0, };

      if (jq == 0)
        {
        }
      else
        while (ce > 0)
          ce = 0;

      jq = vc ();
    }
}

% x86_64-pc-linux-gnu-gcc-8.0.0-alpha20180422 -O2 -ftree-slp-vectorize
-fschedule-insns -fsel-sched-pipelining -fselective-scheduling
-fvar-tracking-assignments -fno-tree-pre -fno-tree-dce -fno-tree-ch
-fno-move-loop-invariants -w -c gbhm444y.c
during RTL pass: sched1
gbhm444y.c: In function 'sg':
gbhm444y.c:27:1: internal compiler error: in create_block_for_bookkeeping, at
sel-sched.c:4563
 }
 ^
0x64e07f create_block_for_bookkeeping
       
/var/tmp/portage/sys-devel/gcc-8.0.0_alpha20180422/work/gcc-8-20180422/gcc/sel-sched.c:4563
0x64e07f find_place_for_bookkeeping
       
/var/tmp/portage/sys-devel/gcc-8.0.0_alpha20180422/work/gcc-8-20180422/gcc/sel-sched.c:4700
0x64e07f generate_bookkeeping_insn
       
/var/tmp/portage/sys-devel/gcc-8.0.0_alpha20180422/work/gcc-8-20180422/gcc/sel-sched.c:4800
0x64e07f move_op_at_first_insn
       
/var/tmp/portage/sys-devel/gcc-8.0.0_alpha20180422/work/gcc-8-20180422/gcc/sel-sched.c:6077
0xc6774c code_motion_path_driver
       
/var/tmp/portage/sys-devel/gcc-8.0.0_alpha20180422/work/gcc-8-20180422/gcc/sel-sched.c:6669
0xc67ad6 code_motion_process_successors
       
/var/tmp/portage/sys-devel/gcc-8.0.0_alpha20180422/work/gcc-8-20180422/gcc/sel-sched.c:6356
0xc67ad6 code_motion_path_driver
       
/var/tmp/portage/sys-devel/gcc-8.0.0_alpha20180422/work/gcc-8-20180422/gcc/sel-sched.c:6622
0xc67ad6 code_motion_process_successors
       
/var/tmp/portage/sys-devel/gcc-8.0.0_alpha20180422/work/gcc-8-20180422/gcc/sel-sched.c:6356
0xc67ad6 code_motion_path_driver
       
/var/tmp/portage/sys-devel/gcc-8.0.0_alpha20180422/work/gcc-8-20180422/gcc/sel-sched.c:6622
0xc67ad6 code_motion_process_successors
       
/var/tmp/portage/sys-devel/gcc-8.0.0_alpha20180422/work/gcc-8-20180422/gcc/sel-sched.c:6356
0xc67ad6 code_motion_path_driver
       
/var/tmp/portage/sys-devel/gcc-8.0.0_alpha20180422/work/gcc-8-20180422/gcc/sel-sched.c:6622
0xc68172 move_op
       
/var/tmp/portage/sys-devel/gcc-8.0.0_alpha20180422/work/gcc-8-20180422/gcc/sel-sched.c:6714
0xc68172 move_exprs_to_boundary
       
/var/tmp/portage/sys-devel/gcc-8.0.0_alpha20180422/work/gcc-8-20180422/gcc/sel-sched.c:5237
0xc68172 schedule_expr_on_boundary
       
/var/tmp/portage/sys-devel/gcc-8.0.0_alpha20180422/work/gcc-8-20180422/gcc/sel-sched.c:5450
0xc6c20c fill_insns
       
/var/tmp/portage/sys-devel/gcc-8.0.0_alpha20180422/work/gcc-8-20180422/gcc/sel-sched.c:5592
0xc6c20c schedule_on_fences
       
/var/tmp/portage/sys-devel/gcc-8.0.0_alpha20180422/work/gcc-8-20180422/gcc/sel-sched.c:7366
0xc6c20c sel_sched_region_2
       
/var/tmp/portage/sys-devel/gcc-8.0.0_alpha20180422/work/gcc-8-20180422/gcc/sel-sched.c:7504
0xc6d958 sel_sched_region_1
       
/var/tmp/portage/sys-devel/gcc-8.0.0_alpha20180422/work/gcc-8-20180422/gcc/sel-sched.c:7546
0xc6e1de sel_sched_region(int)
       
/var/tmp/portage/sys-devel/gcc-8.0.0_alpha20180422/work/gcc-8-20180422/gcc/sel-sched.c:7647
0xc6f0e8 run_selective_scheduling()
       
/var/tmp/portage/sys-devel/gcc-8.0.0_alpha20180422/work/gcc-8-20180422/gcc/sel-sched.c:7733