[Bug rtl-optimization/63384] New: ICE in moveup_expr_chached->sel_bb_head->bb_node with special options

["andi-gcc at firstfloor dot org" <gcc-bugzilla@gcc.gnu.org>]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63384

            Bug ID: 63384
           Summary: ICE in moveup_expr_chached->sel_bb_head->bb_node with
                    special options
           Product: gcc
           Version: 5.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: rtl-optimization
          Assignee: unassigned at gcc dot gnu.org
          Reporter: andi-gcc at firstfloor dot org

Created attachment 33585
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=33585&action=edit
test case (non minimized)

The following combination of options causes an ICE with the attached test case:

g++50 matrix.i -o outfile -O2  -fsel-sched-pipelining-outer-loops
-fsel-sched-reschedule-pipelined -fvar-tracking-assignments-toggle
-ftree-vectorize -fselective-scheduling2

gcc version 4.9.0 20130617 (experimental) (GCC) 

apps/matrixmultiply.cpp: In function 'T** make_test_matrix() [with T = float]':
apps/matrixmultiply.cpp:22:1: internal compiler error: Segmentation fault
 }
 ^
0x8cde37 crash_signal
        ../../gcc/gcc/toplev.c:333
0x6764e1 bb_note(basic_block_def*)
        ../../gcc/gcc/cfgrtl.c:647
0x89c1a1 sel_bb_head(basic_block_def*)
        ../../gcc/gcc/sel-sched-ir.c:4536
0x8a6fa5 moveup_expr_cached
        ../../gcc/gcc/sel-sched.c:2563
0x8ac506 move_op_ascend
        ../../gcc/gcc/sel-sched.c:6217
0x8aabc7 code_motion_path_driver
        ../../gcc/gcc/sel-sched.c:6706
0x8aca54 move_op
        ../../gcc/gcc/sel-sched.c:6758
0x8aca54 move_exprs_to_boundary
        ../../gcc/gcc/sel-sched.c:5292
0x8aca54 schedule_expr_on_boundary
        ../../gcc/gcc/sel-sched.c:5504
0x8af552 fill_insns
        ../../gcc/gcc/sel-sched.c:5646
0x8af552 schedule_on_fences
        ../../gcc/gcc/sel-sched.c:7410
0x8af552 sel_sched_region_2
        ../../gcc/gcc/sel-sched.c:7544
0x8b14bf sel_sched_region_1
        ../../gcc/gcc/sel-sched.c:7583
0x8b14bf sel_sched_region(int)
        ../../gcc/gcc/sel-sched.c:7684
0x8b1fc1 run_selective_scheduling()
        ../../gcc/gcc/sel-sched.c:7760
0x895b56 rest_of_handle_sched2
        ../../gcc/gcc/sched-rgn.c:3606