[llvm] [MemProf] Print full context hash when reporting hinted bytes (PR #114465)

[Snehasish Kumar via llvm-commits]

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@@ -4404,6 +4410,24 @@ void ModuleBitcodeWriterBase::writePerModuleGlobalValueSummary() {
     Stream.EmitRecord(bitc::FS_STACK_IDS, Index->stackIds(), StackIdAbbvId);
   }
 
+  SmallVector<uint64_t, 64> NameVals;
+  if (!Index->contextSizeInfos().empty()) {
+    auto ContextSizeInfoAbbv = std::make_shared<BitCodeAbbrev>();
+    ContextSizeInfoAbbv->Add(BitCodeAbbrevOp(bitc::FS_CONTEXT_SIZE_INFOS));
+    // numids x (fullStackid, totalsize)
+    ContextSizeInfoAbbv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Array));
+    ContextSizeInfoAbbv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 8));
+    unsigned ContextSizeInfoAbbvId =
+        Stream.EmitAbbrev(std::move(ContextSizeInfoAbbv));
+    for (const auto &Info : Index->contextSizeInfos()) {
+      NameVals.push_back(Info.FullStackId);
+      NameVals.push_back(Info.TotalSize);
+    }
+    Stream.EmitRecord(bitc::FS_CONTEXT_SIZE_INFOS, NameVals,
+                      ContextSizeInfoAbbvId);
+    NameVals.clear();
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snehasish wrote:

Do we want to shrink too?

https://github.com/llvm/llvm-project/pull/114465