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

[Teresa Johnson via llvm-commits]

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@@ -225,6 +228,8 @@ static Error writeMemProfRadixTreeBased(
   OS.write(0ULL); // Reserve space for the memprof call stack payload offset.
   OS.write(0ULL); // Reserve space for the memprof record payload offset.
   OS.write(0ULL); // Reserve space for the memprof record table offset.
+  if (Version == memprof::Version4)
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teresajohnson wrote:

That sounds fine

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