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

[David Li via llvm-commits]

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@@ -390,6 +419,14 @@ Error IndexedMemProfReader::deserializeRadixTreeBased(
       /*Payload=*/Start + RecordPayloadOffset,
       /*Base=*/Start, memprof::RecordLookupTrait(Version, Schema)));
 
+  if (DataAccessProfOffset > RecordTableOffset) {
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david-xl wrote:

is it possible to have an non-zero DataAccessProfOffset that is <=  RecordTableOffset? Perhaps assert (!DataAccessProfOffset || ... > RecordTableOffset), and use if (DataAccessProfOffset !=0) as the guard.

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