[LLVMdev] How to use dropAllReferences in dropAllReferences

[xiaoyaollvm]

Hi all.
I want to know how the dropAllReferences() is used  in the FunctionPass MoudlePass and so on. 
If I want to delete the node about function in Module, I can use it ,am i right?
Thanks for your help.
yao.
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.llvm.org/pipermail/llvm-dev/attachments/20130308/d3f9294b/attachment.html>