[clang] [LifetimeSafety] Add missing origins stats for lifetime analysis (PR #166568)

[Utkarsh Saxena via cfe-commits]

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@@ -68,11 +71,35 @@ void LifetimeSafetyAnalysis::run() {
 
   runLifetimeChecker(*LoanPropagation, *LiveOrigins, FactMgr, AC, Reporter);
 }
+
+void collectLifetimeStats(AnalysisDeclContext &AC, OriginManager &OM,
+                          LifetimeSafetyStats &Stats) {
+  if (!AC.getBody())
+    return;
+  Stmt *FunctionBody = AC.getBody();
+  OM.collectMissingOrigins(FunctionBody, Stats);
+}
 } // namespace internal
 
+void printStats(const LifetimeSafetyStats &Stats) {
+  llvm::errs() << "\n*** LifetimeSafety Missing Origin Stats "
+                  "(expression_type : count) :\n\n";
+  unsigned totalMissingOrigins = 0;
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usx95 wrote:

nit: Variable names must follow UpperCamelCase

https://github.com/llvm/llvm-project/pull/166568