[llvm] [GSYM] Callsites: Add data format support and loading from YAML (PR #109781)

[Greg Clayton via llvm-commits]

https://github.com/clayborg requested changes to this pull request.

The main concern is adding data that contains full addresses anywhere in the FunctionInfo encodings. If we can avoid that and encode offsets, that will be good, but it only works is addresses are relative to the start address of the function's address range. We have no relocations in FunctionInfo prior to merge function info or call site info and I would like to keep it that way if possible.

https://github.com/llvm/llvm-project/pull/109781