Some thoughts about steerring commitee work

[Vladimir N. Makarov]

Eric Botcazou wrote:

>>No, GCC hit a fundamental wall because its backend was not modern.
>>The code we generate out of tree-ssa is in general, as good or better
>>than other compilers generate out of their middle ends.
>>
>>The problem remaining is that they have much better backends then us.
>>
>>Until dataflow, *nobody* had done any sort of major undertaking to
>>make the *entire* backend actually modern in any way, shape or form.
>>    
>>
>
>I presume that "backend" means the RTL part of the compiler, right?  So we 
>should focus our efforts on the low-level part of the compiler, rather than 
>on the high-level part?  E.g the register allocator?
>
>  
>
I think a good register allocator and putting more on pseudo-registers 
(better escape analysis) could help x86/x86_64.

As for C++, I think we need more OO language specific optimizations.  I 
don't know what the status of devirtualizion which was reported on the 
previous summit.