[LLVMdev] How to get information from llvm's metadata

[Peter Chang]

 I have two questions:

1) Given the getelementPtr instruction, how can I get the field name using
metada??

eg.

%b = getelementptr inbounds %struct.T* %7, i32 0, i32 1, !dbg !31

I want get it's field name "b".

2) Given a llvm.dbg.declare, how can I get it's llvm value.

eg.

call void @llvm.dbg.declare(metadata !{i32** %r}, metadata !23), !dbg !24

I want get the Value i32** %r.

Please pose the code ! Thank you in advance!!
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