[Bug tree-optimization/90913] [10 Regression] ICE in maybe_gen_insn, at optabs.c:7341 since r272239

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90913

--- Comment #4 from Richard Biener <rguenth at gcc dot gnu.org> ---
Somehow we end up with

(gdb) p debug_tree (maskt)
 <ssa_name 0x7ffff6e35798
    type <boolean_type 0x7ffff6c52b28 logical(kind=1) public unsigned QI
        size <integer_cst 0x7ffff6c3dc60 constant 8>
        unit-size <integer_cst 0x7ffff6c3dc78 constant 1>
        align:8 warn_if_not_align:0 symtab:0 alias-set -1 canonical-type
0x7ffff6c52b28 precision:1 min <integer_cst 0x7ffff6c3deb8 0> max <integer_cst
0x7ffff6c3dee8 1>>
    visited
    def_stmt _157 = _155 & _21;
    version:157>

this must be a latent issue.