[LLVMdev] Where do I put the propeller?

[Krzysztof Parzyszek]

On 11/27/2012 12:50 PM, Dan Gohman wrote:
> On Tue, Nov 27, 2012 at 8:58 AM, Krzysztof Parzyszek
>
> Here is an analogy for your consideration. "Where do I put the propeller?"
>
> [...]
>
> You want a no-compromise helicopter

I want an industrial-strength compiler.  With the possibilities that we 
have here in the LLVM developers community, the sky is the limit.  I see 
no reason why we should restrict ourselves to any design that has 
serious known limitations.

I've spent 8 years working on a compiler that was a bleeding edge of 
compiler technology, and with people who had a wealth of wisdom and 
insight into how to build compilers.  I've tried very hard to absorb 
that intangible knowledge and I believe that to a considerable extent I 
have managed to do that.  Now, that we have a still developing compiler 
that we can do whatever we want with, I'm presenting ideas that I 
believe may be the key to having a world-class optimizer.

The thread that you branched off from shows that there is an interest in 
the scientific and research community in having a compiler that can 
perform well on codes where loop optimizations (including user-guided 
optimizations) are of paramount importance, so I'm not convinced by your 
argument that the community as a whole is happy with what we have. 
Certainly, some people are, but we should not leave out a large group 
that could also benefit from our work.

-Krzysztof

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