[Bug target/89188] New: ICE in pre_and_rev_post_order_compute, at cfganal.c:1055

[marxin at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89188

            Bug ID: 89188
           Summary: ICE in pre_and_rev_post_order_compute, at
                    cfganal.c:1055
           Product: gcc
           Version: 9.0
            Status: UNCONFIRMED
          Keywords: ice-on-valid-code
          Severity: normal
          Priority: P3
         Component: target
          Assignee: unassigned at gcc dot gnu.org
          Reporter: marxin at gcc dot gnu.org
  Target Milestone: ---
              Host: x86_64-pc-linux-gnu
            Target: s390x-linux-gnu

Following is causing ICE:

$ s390x-linux-gnu-gcc
/home/marxin/Programming/gcc/gcc/testsuite/g++.dg/torture/pr88861.C
-flive-range-shrinkage -fnon-call-exceptions -Og
during RTL pass: lr_shrinkage
/home/marxin/Programming/gcc/gcc/testsuite/g++.dg/torture/pr88861.C: In
function ‘int main()’:
/home/marxin/Programming/gcc/gcc/testsuite/g++.dg/torture/pr88861.C:11:1:
internal compiler error: in pre_and_rev_post_order_compute, at cfganal.c:1055
   11 | }
      | ^
0x580b87 pre_and_rev_post_order_compute(int*, int*, bool)
       
/home/marxin/BIG/buildbot/buildworker/marxinbox-gcc-trunk-s390x/build/gcc/cfganal.c:1054
0x76f5d4 init_alias_analysis()
       
/home/marxin/BIG/buildbot/buildworker/marxinbox-gcc-trunk-s390x/build/gcc/alias.c:3321
0x10ee5d1 sched_init()
       
/home/marxin/BIG/buildbot/buildworker/marxinbox-gcc-trunk-s390x/build/gcc/haifa-sched.c:7315
0x10efb4d haifa_sched_init()
       
/home/marxin/BIG/buildbot/buildworker/marxinbox-gcc-trunk-s390x/build/gcc/haifa-sched.c:7352
0xaf18fa schedule_insns()
       
/home/marxin/BIG/buildbot/buildworker/marxinbox-gcc-trunk-s390x/build/gcc/sched-rgn.c:3507
0xaf1edb schedule_insns()
       
/home/marxin/BIG/buildbot/buildworker/marxinbox-gcc-trunk-s390x/build/gcc/sched-rgn.c:3501
0xaf1edb rest_of_handle_live_range_shrinkage
       
/home/marxin/BIG/buildbot/buildworker/marxinbox-gcc-trunk-s390x/build/gcc/sched-rgn.c:3703
0xaf1edb execute
       
/home/marxin/BIG/buildbot/buildworker/marxinbox-gcc-trunk-s390x/build/gcc/sched-rgn.c:3790
Please submit a full bug report,