[Bug rtl-optimization/57662] New: [4.9 Regression] ICE: SIGSEGV in code_motion_process_successors with -fschedule-insns2 -fselective-scheduling2

[zsojka at seznam dot cz]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=57662

            Bug ID: 57662
           Summary: [4.9 Regression] ICE: SIGSEGV in
                    code_motion_process_successors with -fschedule-insns2
                    -fselective-scheduling2
           Product: gcc
           Version: 4.9.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: rtl-optimization
          Assignee: unassigned at gcc dot gnu.org
          Reporter: zsojka at seznam dot cz

Created attachment 30327
  --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=30327&action=edit
reduced testcase

Compiler output:
$ gcc -O -fno-guess-branch-probability -fpeel-loops
-freorder-blocks-and-partition -fschedule-insns2 -fsel-sched-pipelining
-fselective-scheduling2 -ftree-pre testcase.c
testcase.c: In function 'GetHangarNum':
testcase.c:44:1: internal compiler error: Segmentation fault
 }
 ^
0xa4ce7f crash_signal
        /mnt/svn/gcc-trunk/gcc/toplev.c:333
0xa100f9 code_motion_process_successors
        /mnt/svn/gcc-trunk/gcc/sel-sched.c:6429
0xa100f9 code_motion_path_driver
        /mnt/svn/gcc-trunk/gcc/sel-sched.c:6669
0xa13f87 move_op
        /mnt/svn/gcc-trunk/gcc/sel-sched.c:6758
0xa13f87 move_exprs_to_boundary
        /mnt/svn/gcc-trunk/gcc/sel-sched.c:5292
0xa13f87 schedule_expr_on_boundary
        /mnt/svn/gcc-trunk/gcc/sel-sched.c:5504
0xa15e77 fill_insns
        /mnt/svn/gcc-trunk/gcc/sel-sched.c:5646
0xa15e77 schedule_on_fences
        /mnt/svn/gcc-trunk/gcc/sel-sched.c:7410
0xa15e77 sel_sched_region_2
        /mnt/svn/gcc-trunk/gcc/sel-sched.c:7544
0xa19c44 sel_sched_region_1
        /mnt/svn/gcc-trunk/gcc/sel-sched.c:7583
0xa19c44 sel_sched_region(int)
        /mnt/svn/gcc-trunk/gcc/sel-sched.c:7684
0xa1b3b9 run_selective_scheduling()
        /mnt/svn/gcc-trunk/gcc/sel-sched.c:7760
0x9ec8b5 rest_of_handle_sched2
        /mnt/svn/gcc-trunk/gcc/sched-rgn.c:3606
Please submit a full bug report,
with preprocessed source if appropriate.
Please include the complete backtrace with any bug report.
See <http://gcc.gnu.org/bugs.html> for instructions.

$ gcc -v
Using built-in specs.
COLLECT_GCC=/mnt/svn/gcc-trunk/binary-latest/bin/gcc
COLLECT_LTO_WRAPPER=/mnt/svn/gcc-trunk/binary-200224-lto-fortran-checking-yes-rtl-df/libexec/gcc/x86_64-unknown-linux-gnu/4.9.0/lto-wrapper
Target: x86_64-unknown-linux-gnu
Configured with: /mnt/svn/gcc-trunk//configure --enable-checking=yes,rtl,df
--enable-languages=c,c++,lto,fortran
--prefix=/mnt/svn/gcc-trunk/binary-200224-lto-fortran-checking-yes-rtl-df/
--without-cloog --without-ppl
Thread model: posix
gcc version 4.9.0 20130619 (experimental) (GCC) 

Tested revisions:
r200224 - crash
4.8 r198018 - OK