[Bug tree-optimization/90327] New: [9/10 Regression] ICE in convert_move, at expr.c:218 since r265677 on s390x

[marxin at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90327

            Bug ID: 90327
           Summary: [9/10 Regression] ICE in convert_move, at expr.c:218
                    since r265677 on s390x
           Product: gcc
           Version: 9.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: tree-optimization
          Assignee: unassigned at gcc dot gnu.org
          Reporter: marxin at gcc dot gnu.org
  Target Milestone: ---

Following is causing ICE:

$ ./xgcc -B.
/home/marxin/Programming/gcc/gcc/testsuite/gcc.c-torture/compile/pr90139.c -Og
-c
during RTL pass: expand
/home/marxin/Programming/gcc/gcc/testsuite/gcc.c-torture/compile/pr90139.c: In
function ‘foo’:
/home/marxin/Programming/gcc/gcc/testsuite/gcc.c-torture/compile/pr90139.c:8:1:
internal compiler error: in convert_move, at expr.c:218
    8 | foo (void)
      | ^~~
0x10c7156 emit_partition_copy
        /home/marxin/Programming/gcc2/gcc/tree-outof-ssa.c:222
0x10c7156 insert_part_to_rtx_on_edge
        /home/marxin/Programming/gcc2/gcc/tree-outof-ssa.c:391
0x10c7156 elim_create
        /home/marxin/Programming/gcc2/gcc/tree-outof-ssa.c:677
0x10c7156 eliminate_phi
        /home/marxin/Programming/gcc2/gcc/tree-outof-ssa.c:735
0x10c7156 expand_phi_nodes(ssaexpand*)
        /home/marxin/Programming/gcc2/gcc/tree-outof-ssa.c:1007
0x7ffff7b6ab7a __libc_start_main
        ../csu/libc-start.c:308
0x7f00d9 ???
        ../sysdeps/x86_64/start.S:120