What is the right way to register an alias analysis pass

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1

Hi everyone,

I am wondering what is the right way to register an alias analysis
pass.

My alias analysis pass is implemented in a dynamic load module. As I
can see, a general way to register a pass looks like:

   llvm::RegisterPass<Analyzer> X("rci", "RCI Pass");

However, registering a type-based analysis uses:

   INITIALIZE_AG_PASS(...)

I think, registering an alias analysis is special, as an alias
analysis should be chained to other alias analysis. So, my question is
how to register an alias analysis properly.

Thanks.

Xiaolong

2

Hi All,

Guess I figured out the way to register an alias analysis pass.

First, we register an alias analysis pass as normally as we do for other passes. That is,
     
     llvm::RegisterPass<Analyzer> X("rci", "RCI Pass");

Then register this analysis pass also in a group. That is,

    llvm::RegisterAnalysisGroup<AliasAnalysis> Y("rci");

If I am wrong at some point, please get me posted. Thanks.

Xiaolong