[LLVMdev] New 8bit micro controller back-end

[Dale Johannesen]

On Nov 24, 2009, at 1:12 PMPST, Evan Cheng wrote:
> On Nov 24, 2009, at 8:30 AM, David Greene wrote:
> On Monday 23 November 2009 09:01, Anton Korobeynikov wrote:
>>> Hello
>>>
>>>> It is a RISC with around 60 instructions like a 80c51 instruction  
>>>> set
>>>> (without mul/div) and with Direct or indirect memory acces.
>>>
>>> My estimate is something like a man-week for a person, who knows  
>>> what to do
>>> :)
>>
>> That's pretty optimistic, even for someone who knows what to do.
>>
>> The learning curve for TableGen is quite steep.  I would budget at  
>> least a
>> year for everything; learning TableGen, writing patterns, custom  
>> lowering,
>> testing, etc.
>
> 1 year is an eternity in LLVM year. ARM target was up and functional  
> in about 2 months of time.
>
> Evan

And after a year much of what you learned is going to be obsolete...