[Bug target/69175] [6 Regression] ICE in haifa_luid_for_non_insn, at haifa-sched.c:7895

[ktkachov at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=69175

--- Comment #4 from ktkachov at gcc dot gnu.org ---
(In reply to ktkachov from comment #2)
> In my cross compiler configured with checking I get an ICE earlier in ifcvt:
> internal compiler error: Segmentation fault
>  }
>  ^
> 
> 0xc8e934 crash_signal
>         $SRC/gcc/toplev.c:334
> 0x8c89e5 rtl_verify_bb_pointers
>         $SRC/gcc/cfgrtl.c:2686
> 0x8c89e5 rtl_verify_flow_info_1
>         $SRC/gcc/cfgrtl.c:2738
> 0x8c93f7 rtl_verify_flow_info
>         $SRC/gcc/cfgrtl.c:2982
> 0x8b86a2 verify_flow_info()
>         $SRC/gcc/cfghooks.c:258
> 0x12a78de checking_verify_flow_info
>         $SRC/gcc/cfghooks.h:198
> 0x12a78de if_convert
>         $SRC/gcc/ifcvt.c:5385
> 0x12a7d15 execute
>         $SRC/gcc/ifcvt.c:5531
> 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.

This particular segfault occurs in rtl_verify_bb_pointers when trying to take
BLOCK_FOR_INSN of a barrier:
(barrier 101 91 27)