message: Dont touch builders who may be casted
  Summary: `check-cast v{builder} LOtherType;` is not supported by the pass. Exclude the cases earlier so we won't get invalid bytecode.
diff: @@ -1054,6 +1054,11 @@ bool tainted_reg_escapes(
  // TODO(emmasevastian): Treat this case separate.
  return true;
  }
  + } else if (opcode::is_check_cast(op)) {
  + if (tainted[insn->src(0)]) {
  + TRACE(BUILDERS, 5, "Not supported: %s", SHOW(insn));
  + return true;
  + }
  }
  }
  return false;
  