[Mono-dev] [PATCH] Boost speed of UnicodeEncoding

[Kornél Pál]

Hi,

>> I think converting a single character should not be optimized as doing
>> so is
>> already inefficient. It's much faster to use convert it inline using
>> shift
>> operators.
> But you already do this test here
>
> +        if (byteCount >= 2)
>
> +        {
>
> just write else section with fast path for 0 and 1 byte count here.

The attached patch contains some fast paths. I think this is optimal. Note
that currently I'm not going to modify string.memcpy altough it could be
optimized because byte-swapped copy is currently faster for short strings
than string.memcpy.

Kornél
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