[LLVMdev] Regarding a pass in LLVM

[Jianzhou Zhao]

On Tue, Feb 23, 2010 at 7:17 AM, ambika <ambika at cse.iitb.ac.in> wrote:
> Thanks that helped me out.
> But now I am facing one more problem. It says :
>
> ‘llvm::ModulePass* llvm::createMyAnaPass()’ should have been declared
> inside ‘llvm’
>
> but I can find no place to declare it.
> Where should I do it.

We can do what scalar optimizations do.

All scalar passes are declared in include/llvm/Transforms/Scalar.h and
include/llvm-c/Transforms/Scalar.h,
defined in lib/Transforms/Scalar.cpp, and used in include/llvm/LinkAllPasses.h.

Jianzhou

>
>
> John Criswell wrote:
>> ambika at cse.iitb.ac.in wrote:
>>> Hi,
>>>
>>> I am trying to add a pass inn LLVM, and I actually want to add it in
>>> source code, not just directly into object code.
>>>
>>> For that I included the lines in my file MyAna.cpp
>>> (llvm-2.6/lib/ana/MyAna.cpp)
>>>
>>>
>>> char MyAna::ID = 0;
>>> static RegisterPass<MyAna> X("my-aa","My Analysis");
>>> static RegisterAnalysisGroup<AliasAnalysis> Y(X);
>>>
>>> ModulePass *llvm::createMyAnaPass() { return new MyAna(); }
>>>
>>>
>>> I also included createMyAnaPass() in Passes.h and LinkAllPasses.h
>>> But when I do make I get the following error :
>>>
>>> /home/ambika/llvm/llvm-obj/tools/opt/Release/opt.o: In function `global
>>> constructors keyed to opt.cpp':
>>> opt.cpp:(.text+0x1e89): undefined reference to `llvm::createMyAnaPass()'
>>>
>>>
>>> Am I missing out something.
>> Have you modified the Makefile in tools/opt to link in the library
>> containing your pass? Your pass doesn't appear to be placed in
>> libAnalysis or libTransform, so you'll need to modify the opt Makefile
>> to link in whatever your library's name is.
>>
>> -- John T.
>>
>>> Please help me.
>>>
>>> thanks and regards,
>>> Ambika
>>>
>>> _______________________________________________
>>> LLVM Developers mailing list
>>> LLVMdev at cs.uiuc.edu http://llvm.cs.uiuc.edu
>>> http://lists.cs.uiuc.edu/mailman/listinfo/llvmdev
>>
>
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