Substitute Blocks in TransformerCPS too

[dvdvgt]

Closes #1229

[dvdvgt]

Before

function motz_0(n_23, ks_1706, k_937) {
  motz_1: while (true) {
    if ((n_23 <= (1))) {
      return () => k_937(1, ks_1706);
    } else {
      function product_2(i_45, ks_1707, k_938) {
        return motz_0(i_45, ks_1707, (v_r_846, ks_1708) =>
          motz_0((((n_23 - (2))) - i_45), ks_1708, (v_r_847, ks_1709) =>
            () => k_938((v_r_846 * v_r_847), ks_1709)));
      }
      /* prepare call */
      const tmp_n_1 = n_23;
      const tmp_k_6 = k_937;
      k_937 = (v_r_848, ks_1710) =>
        sum_4(0, (tmp_n_1 - (2)), product_2, ks_1710, (v_r_849, ks_1711) =>
          () => tmp_k_6((v_r_848 + v_r_849), ks_1711));
      n_23 = (tmp_n_1 - (1));
      continue motz_1;
    }
  }
}

After

function motz_0(n_23, ks_1706, k_937) {
  motz_1: while (true) {
    if ((n_23 <= (1))) {
      return () => k_937(1, ks_1706);
    } else {
      function product_2(i_45, ks_1707, k_938) {
        return motz_0(i_45, ks_1707, (v_r_846, ks_1708) =>
          motz_0((((n_23 - (2))) - i_45), ks_1708, (v_r_847, ks_1709) =>
            () => k_938((v_r_846 * v_r_847), ks_1709)));
      }
      /* prepare call */
      const tmp_n_1 = n_23;
      const tmp_k_6 = k_937;
      function product_subst_0(i_45, ks_1707, k_938) {
        return motz_0(i_45, ks_1707, (v_r_846, ks_1708) =>
          motz_0((((tmp_n_1 - (2))) - i_45), ks_1708, (v_r_847, ks_1709) =>
            () => k_938((v_r_846 * v_r_847), ks_1709)));
      }
      k_937 = (v_r_848, ks_1710) =>
        sum_4(0, (tmp_n_1 - (2)), product_subst_0, ks_1710, (v_r_849, ks_1711) =>
          () => tmp_k_6((v_r_848 + v_r_849), ks_1711));
      n_23 = (tmp_n_1 - (1));
      continue motz_1;
    }
  }
}

Disadvantage: More dead-code

[jiribenes]

Could we add this benchmark as one of those tests that also run with noopt (say, on JS) so that we catch it next time?