On 2/25/19 3:55 AM, David Hildenbrand wrote:
> +uint64_t HELPER(lcbb)(uint64_t addr, uint32_t m3)
> +{
> + const uint32_t block_size = 1ul << (m3 + 6);
> + const uint64_t rounded_addr = ROUND_UP(addr, block_size);
> + uint32_t to_load = 16;
> +
> + if (rounded_addr != addr) {
> + to_load = MIN(rounded_addr - addr, to_load);
> + }
> + return to_load;
> +}
I don't understand all of this "blocksize" business, when they are all powers
of two, and the maximum value returned is 16.
As far as I can see, the result is obtained by -(addr | -16) regardless of the
value of m3.
r~
