[Lldb-commits] [lldb] [lldb] Extend frame recognizers to hide frames from backtraces (PR #104523)

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jimingham wrote:

When we were talking about this originally I thought that StackFrames would get an "ImplementationFrame" property, and we would use that to determine whether to hide the frame in bt (when not passing --unfiltered).  Then the frame recognizers when they are run on the frame in the ordinary course of things (we do this to determine recognized args anyway) they would set the property on the StackFrame.  Then StackFrameList could just check that property.
RecognizeFrame might be expensive, and we don't currently have any machinery in place to make sure it caches the results per stop.  Most of the RecognizeFrame's just do the work every time.
I also think for structural reasons we shouldn't force FrameRecognizers to be the only entity that can mark frames as "should be hidden."

https://github.com/llvm/llvm-project/pull/104523