[llvm] [StaticDataLayout][PGO]Implement reader and writer change for data access profiles (PR #139997)

[Mingming Liu via llvm-commits]

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@@ -35,4 +35,15 @@ HeapProfileRecords:
         - { Function: 0x7777777777777777, LineOffset: 77, Column: 70, IsInlineFrame: true }
         - { Function: 0x8888888888888888, LineOffset: 88, Column: 80, IsInlineFrame: false }
         CalleeGuids: [ 0x300 ]
+DataAccessProfiles:
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mingmingl-llvm wrote:

Similar to the text format instr profile or sample profiles, the text format doesn't support prior versions with or without this change. 

Is the idea of the check backward compatibility or something else?

https://github.com/llvm/llvm-project/pull/139997