[4Walter&Andrei] D is 40 times slower. We need a new language feature!

[Vladimir Panteleev via Digitalmars-d]

On Saturday, 20 May 2017 at 03:24:41 UTC, 9il wrote:
> What can I do to make it happen?

Sounds like you're asking for opIndex currying?

https://en.wikipedia.org/wiki/Currying

Have you tried implementing opIndex as a function which takes a 
single argument, and returns an object which then also implements 
opIndex with a single argument? You would probably need to write 
matrix[2][4] instead of matrix[2, 4], but that doesn't look hard 
to fix as well.

> As was said optimizsers can not split opIndex body because it 
> is function (inlined or not  inlined does not matter).

Have you tried splitting the opIndex implementation into two 
functions, one with just the code that should always be inlined, 
and one with the rest of the code that doesn't necessarily have 
to be inlined?

How about pragma(inline), does that help?