llvm dev - Sep 2006 - [LLVMdev] dependent passes

I am trying to create two passes X and Y, in which pass X depends on 
pass Y.  After attempting this several times it appears that pass Y must 
be in the llvm namespace.  Whenever it was not in the llvm namespace, 
"opt -load" would complain about undefined symbols when I called 
getAnalysis<>(). Am I correct that the pass that is depended on must be 
in the llvm namespace?  If so, that was not clear in the documentation 
regarding writing an LLVM pass.

Thanks,
Ryan

On Sep 26, 2006, at 5:49 PM, Ryan M. Lefever wrote:
> I am trying to create two passes X and Y, in which pass X depends on
> pass Y.  After attempting this several times it appears that pass Y  
> must
> be in the llvm namespace.  Whenever it was not in the llvm namespace,
> "opt -load" would complain about undefined symbols when I called
> getAnalysis<>(). Am I correct that the pass that is depended on must
> be
> in the llvm namespace?  If so, that was not clear in the documentation
> regarding writing an LLVM pass.
http://llvm.org/docs/WritingAnLLVMPass.html says,

-----
Basic code required
Now that we have a way to compile our new pass, we just have to write  
it. Start out with:

#include "llvm/Pass.h"
#include "llvm/Function.h"
Which are needed because we are writing a Pass, and we are operating  
on Function's.

Next we have:

using namespace llvm;
... which is required because the functions from the include files  
live in the llvm namespace.

----



-

Devang

I think that we are talking about two different things.  I understand 
that in order to use LLVM classes you must either qualify them with the 
llvm namespace or use the statement "using namespace llvm;"  What
I'm
saying is that it has been my experience that when a pass Y depends on 
another pass X, i.e, Y is a required analysis of X, then Y must be 
defined within the llvm namespace rather than in an anonymous namespace 
as http://llvm.org/docs/WritingAnLLVMPass.html suggests it should be. 
I'm wondering if that is correct, or if I'm missing something.

Regards,
Ryan


Devang Patel wrote:
> On Sep 26, 2006, at 5:49 PM, Ryan M. Lefever wrote:
> 
>> I am trying to create two passes X and Y, in which pass X depends on
>> pass Y.  After attempting this several times it appears that pass Y  
>> must
>> be in the llvm namespace.  Whenever it was not in the llvm namespace,
>> "opt -load" would complain about undefined symbols when I
called
>> getAnalysis<>(). Am I correct that the pass that is depended on
must
>> be
>> in the llvm namespace?  If so, that was not clear in the documentation
>> regarding writing an LLVM pass.
> 
> http://llvm.org/docs/WritingAnLLVMPass.html says,
> 
> -----
> Basic code required
> Now that we have a way to compile our new pass, we just have to write  
> it. Start out with:
> 
> #include "llvm/Pass.h"
> #include "llvm/Function.h"
> Which are needed because we are writing a Pass, and we are operating  
> on Function's.
> 
> Next we have:
> 
> using namespace llvm;
> ... which is required because the functions from the include files  
> live in the llvm namespace.
> 
> ----