On 30.01.2017 18:17, Jan Ziak wrote:
On Mon, Jan 30, 2017 at 5:08 PM, Marek Olšák <mar...@gmail.com> wrote:
On Mon, Jan 30, 2017 at 4:41 PM, Jan Ziak <0xe2.0x9a.0...@gmail.com> wrote:
Hello
Just a note about the future of Mesa:
It is likely that optimizing Mesa will lead you (Marek) to consider
generative programming some years into the future:
Optimal code is basically a form of efficient adaptation to current
circumstances. Generating the optimal code by hand can be
inefficient/tedious and it might be possible to generate some of it by
a program. The generator reads in C/C++/other code&data and outputs
optimized C/C++ code containing the necessary guards, data parsers,
specialized data structures, etc. The machine-generated code can be an
order of magnitude larger than the input to the generator - which is
one of the main reasons generative programming increases programmer
productivity in the long term.
The generator itself can be written in any programming language you
prefer (although personally I only recommend a compiled language with
static types).
If it were so simple, somebody would have done it already.
Marek
It is simpler, more productive and less error-prone for Mesa-like
libraries than trying to optimize critical C code&data structures by
hand.
It is impossible to improve Mesa performance to a next-generation
level without refusing some hand-written code. The human brain is
incapable of handling so many states.
If you don't try it you will never know how far it can go in terms of
optimizing Mesa.
Talk is easy, action is hard - in this case particularly, given how
unstructured a lot of the stuff is.
Note that automatic generation is already used for the command stream
debug dumping, and if you think you found a place where it really helps,
feel free to show us (with patches!) how it's done :P
In the meantime, you may find better targets for such efforts in LLVM.
Cheers,
Nicolai
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