================
@@ -131,24 +131,37 @@ class ExpireFact : public Fact {
 };
 
 class OriginFlowFact : public Fact {
+public:
+  struct LifetimeBoundInfo {
----------------
Xazax-hun wrote:

I wonder if it is a good idea to double the size of `OriginFlowFact` like this. 
We have a lot of flows, only a fraction of them results from `lifetimebound` 
annotations. An alternative design could be having this information on the 
side, in a `DenseMap<OriginFlowFact*, LifetimeBoundInfo>` that could be 
propagated during fact generation and consulted later on during reporting. 

https://github.com/llvm/llvm-project/pull/206337
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