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

[asolokha at gmx dot com]

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

            Bug ID: 85410
           Summary: ICE in create_block_for_bookkeeping, at
                    sel-sched.c:4563
           Product: gcc
           Version: unknown
            Status: UNCONFIRMED
          Keywords: ice-on-invalid-code
          Severity: normal
          Priority: P3
         Component: rtl-optimization
          Assignee: unassigned at gcc dot gnu.org
          Reporter: asolokha at gmx dot com
  Target Milestone: ---
            Target: powerpc-*-linux-gnu

gcc-8.0.0-alpha20180415 snapshot (r259389) ICEs when compiling the following
snippet w/ -O3 (-Ofast) -fselective-scheduling -fvar-tracking-assignments:

void
nl (int fg, int lb)
{
  long long unsigned int xj = ~0;
  double vu;

  while ((lb - (!fg + 1)) != xj)
    lb = fg = vu;
}

% powerpc-e300c3-linux-gnu-gcc-8.0.0-alpha20180415 -O3 -fselective-scheduling
-fvar-tracking-assignments -w -c chreru5r.c
during RTL pass: sched1
chreru5r.c: In function 'nl':
chreru5r.c:9:1: internal compiler error: in create_block_for_bookkeeping, at
sel-sched.c:4563
 }
 ^
0xc0f988 create_block_for_bookkeeping
       
/var/tmp/portage/cross-powerpc-e300c3-linux-gnu/gcc-8.0.0_alpha20180415/work/gcc-8-20180415/gcc/sel-sched.c:4563
0xc0f988 find_place_for_bookkeeping
       
/var/tmp/portage/cross-powerpc-e300c3-linux-gnu/gcc-8.0.0_alpha20180415/work/gcc-8-20180415/gcc/sel-sched.c:4700
0xc0f988 generate_bookkeeping_insn
       
/var/tmp/portage/cross-powerpc-e300c3-linux-gnu/gcc-8.0.0_alpha20180415/work/gcc-8-20180415/gcc/sel-sched.c:4800
0xc0f988 move_op_at_first_insn
       
/var/tmp/portage/cross-powerpc-e300c3-linux-gnu/gcc-8.0.0_alpha20180415/work/gcc-8-20180415/gcc/sel-sched.c:6077
0xc10243 code_motion_path_driver
       
/var/tmp/portage/cross-powerpc-e300c3-linux-gnu/gcc-8.0.0_alpha20180415/work/gcc-8-20180415/gcc/sel-sched.c:6669
0xc10bc9 code_motion_process_successors
       
/var/tmp/portage/cross-powerpc-e300c3-linux-gnu/gcc-8.0.0_alpha20180415/work/gcc-8-20180415/gcc/sel-sched.c:6356
0xc10bc9 code_motion_path_driver
       
/var/tmp/portage/cross-powerpc-e300c3-linux-gnu/gcc-8.0.0_alpha20180415/work/gcc-8-20180415/gcc/sel-sched.c:6622
0xc10bc9 code_motion_process_successors
       
/var/tmp/portage/cross-powerpc-e300c3-linux-gnu/gcc-8.0.0_alpha20180415/work/gcc-8-20180415/gcc/sel-sched.c:6356
0xc10bc9 code_motion_path_driver
       
/var/tmp/portage/cross-powerpc-e300c3-linux-gnu/gcc-8.0.0_alpha20180415/work/gcc-8-20180415/gcc/sel-sched.c:6622
0xc10bc9 code_motion_process_successors
       
/var/tmp/portage/cross-powerpc-e300c3-linux-gnu/gcc-8.0.0_alpha20180415/work/gcc-8-20180415/gcc/sel-sched.c:6356
0xc10bc9 code_motion_path_driver
       
/var/tmp/portage/cross-powerpc-e300c3-linux-gnu/gcc-8.0.0_alpha20180415/work/gcc-8-20180415/gcc/sel-sched.c:6622
0xc11415 move_op
       
/var/tmp/portage/cross-powerpc-e300c3-linux-gnu/gcc-8.0.0_alpha20180415/work/gcc-8-20180415/gcc/sel-sched.c:6714
0xc11415 move_exprs_to_boundary
       
/var/tmp/portage/cross-powerpc-e300c3-linux-gnu/gcc-8.0.0_alpha20180415/work/gcc-8-20180415/gcc/sel-sched.c:5237
0xc11415 schedule_expr_on_boundary
       
/var/tmp/portage/cross-powerpc-e300c3-linux-gnu/gcc-8.0.0_alpha20180415/work/gcc-8-20180415/gcc/sel-sched.c:5450
0xc15488 fill_insns
       
/var/tmp/portage/cross-powerpc-e300c3-linux-gnu/gcc-8.0.0_alpha20180415/work/gcc-8-20180415/gcc/sel-sched.c:5592
0xc172ce schedule_on_fences
       
/var/tmp/portage/cross-powerpc-e300c3-linux-gnu/gcc-8.0.0_alpha20180415/work/gcc-8-20180415/gcc/sel-sched.c:7366
0xc172ce sel_sched_region_2
       
/var/tmp/portage/cross-powerpc-e300c3-linux-gnu/gcc-8.0.0_alpha20180415/work/gcc-8-20180415/gcc/sel-sched.c:7504
0xc18341 sel_sched_region_1
       
/var/tmp/portage/cross-powerpc-e300c3-linux-gnu/gcc-8.0.0_alpha20180415/work/gcc-8-20180415/gcc/sel-sched.c:7546
0xc19935 sel_sched_region(int)
       
/var/tmp/portage/cross-powerpc-e300c3-linux-gnu/gcc-8.0.0_alpha20180415/work/gcc-8-20180415/gcc/sel-sched.c:7647
0xc1a289 run_selective_scheduling()
       
/var/tmp/portage/cross-powerpc-e300c3-linux-gnu/gcc-8.0.0_alpha20180415/work/gcc-8-20180415/gcc/sel-sched.c:7733