inlining or not inlining...

[Walter Bright]

bearophile wrote:
>> 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?
> 
> Inlining is an important optimization, so give this information to the programmer is a good start.

Register allocation is far more important than inlining. Why not give 
information about why a variable was not enregistered?