[llvm] [BOLT] Support profile density with basic samples (PR #137644)

[Maksim Panchenko via llvm-commits]

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@@ -567,15 +567,14 @@ void DataAggregator::processProfile(BinaryContext &BC) {
   processMemEvents();
 
   // Mark all functions with registered events as having a valid profile.
-  const auto Flags = opts::BasicAggregation ? BinaryFunction::PF_SAMPLE
-                                            : BinaryFunction::PF_LBR;
   for (auto &BFI : BC.getBinaryFunctions()) {
     BinaryFunction &BF = BFI.second;
-    FuncBranchData *FBD = getBranchData(BF);
-    if (FBD || getFuncSampleData(BF.getNames())) {
-      BF.markProfiled(Flags);
-      if (FBD)
-        BF.RawBranchCount = FBD->getNumExecutedBranches();
+    if (FuncBranchData *FBD = getBranchData(BF)) {
+      BF.markProfiled(BinaryFunction::PF_LBR);
+      BF.RawSampleCount = FBD->getNumExecutedBranches();
+    } else if (FuncSampleData *FSD = getFuncSampleData(BF.getNames())) {
+      BF.markProfiled(BinaryFunction::PF_SAMPLE);
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maksfb wrote:

E.g., we have `PF_LBR` and `PF_SAMPLE`.

https://github.com/llvm/llvm-project/pull/137644