Can you shrink it further?

[Andrei Alexandrescu via Digitalmars-d]

On 10/12/2016 09:39 AM, Stefan Koch wrote:
> On Wednesday, 12 October 2016 at 13:32:45 UTC, Stefan Koch wrote:
>> On Wednesday, 12 October 2016 at 12:46:50 UTC, Andrei Alexandrescu wrote:
>>>
>>> In the second case, the compiler generates an inc for bumping the
>>> pointer and a dec for decreasing the length (small instructions). If
>>> the variable char_length is used, add/sub must be used (larger). --
>>> Andrei
>
> When I write code so i can keep the
> str = str[1 .. str.length]
> It leads to lager code overall and decreases performance.
> both in table lookup and in the multi-branch code.
>
> update:
> for ldc the table-lookup code is faster 27% then the current popFront.
> on dmd the table-lookup is 2% faster then the current popFront.
>
> for ldc the branching code is 23% faster then the current popFront
> for dmd the branching code is 20% faster then the current popFront

Thanks! I'd say make sure there is exactly 0% loss on performance 
compared to the popFront in the ASCII case, and if so make a PR with the 
table version. -- Andrei