[LLVMdev] Use the IR information to modify the AST

[yao]

Hi,guys:

I am try to get some information from the IR, such as Function type, Function arguments,
I want to save then to the data structure which defined by myself, and I want use the data structure to modify the
AST．
But I know ,the IR was produced by the AST,　I am not sure my thought is wright or not.
If so, with API or function in the LLVM I will used? or some linkage or demo that I can learn form?

Thanks,
Yao.
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