Some thoughts on metadata, debug info, TBAA, annotations etc

Hi All,

I'd like to propose some extensions to LLVM that will make it substantially faster at manipulating debug info, and will make the general annotation mechanisms in LLVM much richer:
http://nondot.org/sabre/LLVMNotes/EmbeddedMetadata.txt

Thoughts welcome,

-Chris

Having a clean mechanism for TBAA would be valuable (long term) for our parallelization project. Different high-level parallel languages have rich "non-aliasing" information available, usually encoded (or encodable) as pointer types, and we would like to be able to communicate these down to the LLVM passes.

--Vikram
Associate Professor, Computer Science
University of Illinois at Urbana-Champaign
http://llvm.org/~vadve