inlining or not inlining...

[so]

> While in isolation that's a good idea, how far should it be taken?  
> Should the compiler emit information on which variables wound up in  
> which registers, and why? What about other of the myriad of compiler  
> optimizations?

Isn't Inlining by far the most important (most practical) optimization  
among those that actually we can control?
A few times i have seen comparisons here to similar languages and in most  
of them the inlining was the reason (only) for the inferior performance.
I agree it would be awesome if the compilers had the ability to chose the  
best method, but comparisons show sometimes the opposite, i don't know  
maybe they are hand-picked for some reason.