[LLVMdev] Pass Schedule Error

[Andrew Trick]

On Jun 14, 2013, at 1:12 PM, dag at cray.com wrote:

> I've been puzzling over this for a day:
> 
> Unable to schedule 'Unnamed pass: implement Pass::getPassName()'
> required by '<some pass>'
> Unable to schedule pass
> UNREACHABLE executed at llvm/lib/VMCore/PassManager.cpp:1213!
> 
> First, why can't getPassName find the name?  I have provided one in the
> usual way.  Second, why is it unable to schedule the pass?

The INITIALIZE_PASS macro is the usual way. Is that what you mean?

You would need to initialize each subclass of MyPassBase separately and each needs its own ID.

-Andy

> -debug-pass=Details doesn't provide much help.
> 
> This analysis pass is somewhat different in that it has a class
> hierarchy like this:
> 
>             MyPass
>               |
>               V
>          MyPassBase<T>
>               |
>               V
>       MachineFunctionPass
> 
> I pass the static ID down through MyPassBase to MachineFunctionPass in
> the constructor.
> 
> Is there any reason why this inheritance would cause a problem?  The
> problem occurred when I factored most of MyPass out into MyPassBase for
> reuse.
> 
> Thanks!
> 
>                               -David
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