[LLVMdev] loop pragmas

[Krzysztof Parzyszek]

On 11/21/2012 12:48 PM, Tobias Grosser wrote:
> On 11/21/2012 06:56 PM, Krzysztof Parzyszek wrote:
>>
>> Yes, that is not hard to accomplish.
>
> Actually, I believe this is _not_ easy. Though, it makes only sense to
> discuss this with a specific annotation in mind.

Agreed.  If there is a dedicated consumer of certain annotations, then 
after it's done, it should remove the annotations.  This is not hard 
when it can run early enough not to have the annotations altered by 
prior transformations.  Now, if there are special annotations for 
several dedicated consumers, or the consumer has to run late, then it 
does become difficult.

What would be nice is if we came up with a design that would allow a 
relatively easy validation of the annotations (something conceptually 
similar to error-detecting codes).  The consumer then would disregard 
and remove the annotations that are no longer valid.

-Krzysztof

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