How to attach metadata to LLVM IR using the C++ API?

Question

Can anyone point me to a concrete example of attaching metadata to llvm-ir using the c++ api?

I\'ve read this page http://llvm.org/docs/SourceLevelDebugging.html.

<

Answer 1

There are two things you can do.

1. Attach metadata nodes to instructions (like the !dbg nodes from the link you referenced). For that, there's the Instruction::setMetadata method
2. Create named metadata nodes in a Module, not attached to any particular instruction. For that, use Module::getOrInsertNamedMetadata.