[llvm] [SampleFDO] Read call-graph matching recovered top-level function profile (PR #101053)

[via llvm-commits]

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@@ -1257,8 +1306,11 @@ SampleProfileReaderExtBinaryBase::readFuncMetadata(bool ProfileHasAttribute) {
     if (It != Profiles.end())
       FProfile = &It->second;
 
+    const uint8_t *Start = Data;
     if (std::error_code EC = readFuncMetadata(ProfileHasAttribute, FProfile))
       return EC;
+
+    FContextToMetaDataSecRange[FContext.getHashCode()] = {Start, Data};
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WenleiHe wrote:

If a function doesn't have any attribute, we can skip inserting the index?

https://github.com/llvm/llvm-project/pull/101053