Function size_byte_number

ir/memory.cpp:137–142

static unsigned size_byte_number() {
  if (!num_sub_byte_bits)
    return 0;
  return
    max(ilog2_ceil(divide_up(1 << num_sub_byte_bits, bits_byte), false), 1u);
}

static unsigned sub_byte_bits() {
  return num_sub_byte_bits + size_byte_number();