[Bug tree-optimization/113018] ICE in gimple_convert, gimple-fold.cc during the SLP pass

[rguenth at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=113018

--- Comment #2 from Richard Biener <rguenth at gcc dot gnu.org> ---
OK, so we're running into

  /* When a BB reduction doesn't have an even number of lanes
     strip it down, treating the remaining lane as scalar.
     ???  Selecting the optimal set of lanes to vectorize would be nice
     but SLP build for all lanes will fail quickly because we think
     we're going to need unrolling.  */
  if (kind == slp_inst_kind_bb_reduc
      && (scalar_stmts.length () & 1))
    remain.safe_insert (0, gimple_get_lhs (scalar_stmts.pop ()->stmt));

pushing the "LHS" of an asm.

__asm__("" : "=w" s_10 : "0" _1);