1 files changed, 9 insertions, 0 deletions
diff --git a/llvm/lib/Analysis/BranchProbabilityInfo.cpp b/llvm/lib/Analysis/BranchProbabilityInfo.cpp
index 8c12a100428..d802552d4e2 100644
--- a/llvm/lib/Analysis/BranchProbabilityInfo.cpp
+++ b/llvm/lib/Analysis/BranchProbabilityInfo.cpp
@@ -624,6 +624,7 @@ void BranchProbabilityInfo::setEdgeProbability(const BasicBlock *Src,
                                                unsigned IndexInSuccessors,
                                                BranchProbability Prob) {
   Probs[std::make_pair(Src, IndexInSuccessors)] = Prob;
+  Handles.insert(BasicBlockCallbackVH(Src, this));
   DEBUG(dbgs() << "set edge " << Src->getName() << " -> " << IndexInSuccessors
                << " successor probability to " << Prob << "\n");
 }
@@ -641,6 +642,14 @@ BranchProbabilityInfo::printEdgeProbability(raw_ostream &OS,
   return OS;
 }
 
+void BranchProbabilityInfo::eraseBlock(const BasicBlock *BB) {
+  for (auto I = Probs.begin(), E = Probs.end(); I != E; ++I) {
+    auto Key = I->first;
+    if (Key.first == BB)
+      Probs.erase(Key);
+  }
+}
+
 void BranchProbabilityInfo::calculate(const Function &F, const LoopInfo &LI) {
   DEBUG(dbgs() << "---- Branch Probability Info : " << F.getName()
                << " ----\n\n");