[Bug middle-end/112406] [14 Regression] Several SPECCPU 2017 benchmarks fail with on internal compiler error: in expand_insn, at optabs.cc:8305 after g:01c18f58d37865d5f3bbe93e666183b54ec608c7

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=112406

--- Comment #9 from Robin Dapp <rdapp at gcc dot gnu.org> ---
I believe the problem is that in

      if (vectype)
        vector_type = vectype;
      else if (VECT_SCALAR_BOOLEAN_TYPE_P (TREE_TYPE (op))
               && VECTOR_BOOLEAN_TYPE_P (stmt_vectype))
        vector_type = truth_type_for (stmt_vectype);
      else
        vector_type = get_vectype_for_scalar_type (loop_vinfo, TREE_TYPE (op));

we don't expect a COND_OP and wrongly deduce the vector type from the scalar
type (because !VECTOR_BOOLEAN_TYPE_P (stmt_vectype)).  Maybe we need to check
whether we look at the mask operand of a conditional operation and use the
statement's vectype in that case.