// intermediate nodes in a TableGen pattern result. In such a case, the
// destination type is not inferred and must be given explicitly.
//
// Preconditions: The given value must have a ShapedType.
static Value CreateTFCastOpF32(OpBuilder *builder, Location loc, Value x,
                               BoolAttr truncate) {
  auto x_type = mlir::dyn_cast_or_null<ShapedType>(x.getType());
  if (!x_type) llvm_unreachable("unsupported type");