[llvm] [BOLT][NFCI] Simplify DataAggregator using traces (PR #143289)

[Paschalis Mpeis via llvm-commits]

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@@ -1307,29 +1280,25 @@ std::error_code DataAggregator::parseAggregatedLBREntry() {
   if (ToFunc)
     ToFunc->setHasProfileAvailable();
 
-  Trace Trace(FromOffset, ToOffset);
-  // Taken trace
-  if (Type == TRACE || Type == BRANCH) {
-    TakenBranchInfo &Info = BranchLBRs[Trace];
-    Info.TakenCount += Count;
-    Info.MispredCount += Mispreds;
-
-    NumTotalSamples += Count;
+  if (Type == FT || Type == FT_EXTERNAL_ORIGIN) {
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paschalis-mpeis wrote:

nit: consider adding a comment

https://github.com/llvm/llvm-project/pull/143289