How to get the debug information for an LLVM IR type?

Hi,

I am now trying to do some code analysis and need to get the debug information of the LLVM IR type encountered in the bitcode.

In detail, given a LLVM Type object, is it possible for me to retrieve the corresponding DIType (or MDNode) object? I feel LLVM should be able to know everything about a type, if the source file is compiled with the -g option by clang. I tried various methods but none of them allows me to connect a specific Type with its debug information.

Any one knows how to achieve this? Thank you in advance.

Pei Wang

Hi Pei Wang,

Hi,

I am now trying to do some code analysis and need to get the debug information
of the LLVM IR type encountered in the bitcode.

I don't think this is going to work, because many different types in the
original language map to the same LLVM IR type. For example the C types "int"
and "unsigned" both become "i32" in LLVM. Yet "int" and "unsigned" have
different debug info AFAIK, so which debug info should "i32" be mapped too?

Ciao, Duncan.