[Bug tree-optimization/92669] New: 10 Regression] ICE in pre_and_rev_post_order_compute_fn at gcc/cfganal.c:1034 since r278666

[marxin at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=92669

            Bug ID: 92669
           Summary: 10 Regression] ICE in
                    pre_and_rev_post_order_compute_fn at
                    gcc/cfganal.c:1034 since r278666
           Product: gcc
           Version: 10.0
            Status: UNCONFIRMED
          Keywords: ice-on-valid-code
          Severity: normal
          Priority: P3
         Component: tree-optimization
          Assignee: unassigned at gcc dot gnu.org
          Reporter: marxin at gcc dot gnu.org
                CC: rguenth at gcc dot gnu.org
  Target Milestone: ---
              Host: x86_64-linux-gnu
            Target: aarch64-linux-gnu

I see the following ICE:

$ ./xgcc -B.
/home/marxin/Programming/gcc/gcc/testsuite/c-c++-common/gomp/declare-variant-9.c
-Os -mtune=cortex-a57 -c
during RTL pass: fma_steering
/home/marxin/Programming/gcc/gcc/testsuite/c-c++-common/gomp/declare-variant-9.c:
In function ‘test1’:
/home/marxin/Programming/gcc/gcc/testsuite/c-c++-common/gomp/declare-variant-9.c:41:1:
internal compiler error: Segmentation fault
   41 | }
      | ^
0x115ddea crash_signal
        /home/marxin/Programming/gcc2/gcc/toplev.c:328
0x7fe9f924414f ???
       
/usr/src/debug/glibc-2.30-1.2.x86_64/signal/../sysdeps/unix/sysv/linux/x86_64/sigaction.c:0
0xad6a6b pre_and_rev_post_order_compute_fn(function*, int*, int*, bool)
        /home/marxin/Programming/gcc2/gcc/cfganal.c:1034
0xad6af5 pre_and_rev_post_order_compute(int*, int*, bool)
        /home/marxin/Programming/gcc2/gcc/cfganal.c:1047
0x163c134 func_fma_steering::analyze()
       
/home/marxin/Programming/gcc2/gcc/config/aarch64/cortex-a57-fma-steering.c:930
0x163c575 func_fma_steering::execute_fma_steering()
       
/home/marxin/Programming/gcc2/gcc/config/aarch64/cortex-a57-fma-steering.c:1047
0x163c82f pass_fma_steering::execute(function*)
       
/home/marxin/Programming/gcc2/gcc/config/aarch64/cortex-a57-fma-steering.c:1083
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