Re: [PATCH 08/33] target/ppc: Implement cnttzdm

[Richard Henderson]

On 10/21/21 12:45 PM, matheus.ferst@eldorado.org.br wrote:
> +uint64_t helper_CNTTZDM(uint64_t src, uint64_t mask)
> +{
> +    uint64_t count = 0;
> +
> +    while (mask != 0) {
> +        if ((src >> ctz64(mask)) & 1) {
> +            break;
> +        }
> +
> +        count++;
> +        mask &= mask - 1;
> +    }
> +
> +    return count;
> +}

Similar to cntlzdm, we can use src & mask.

r~