treelang fix for rs6000 / treelang not proper front end

[Steven Bosscher]

Jeff Sturm wrote:

>On Tue, 10 Jun 2003, Tim Josling wrote:
>  
>
>>Personally I like to build my own language specific parse tree and then
>>rtl-ize it in a separate module. I did this with my cobol compiler.
>>    
>>
>
>Is that really much different than building a language-specific parse tree
>then calling some module to genericize it?
>
No, but it is much easier to do this when you start writing a GCC front 
end while you're not yet a GCC guru and you have no example to look at.

>My understanding from the tree-ssa presentations is that the important RTL
>optimizers won't be maintained long-term, so I wouldn't want to count on
>them in a new frontend.
>

Well, if they are important optimizers, why wouldn't they be 
maintained?  I thought the consensus was that we'll always have RTL 
optimizers.  Jeff recently even mentioned he would like to keep RTL SSA 
alive and have mid-RTL after all.

Gr.
Steven