gistfile1.txt

   // Copy DIFinder from cache which is primed on F's compile unit when available
   auto *PrimedDIFinder = cachedDIFinder(F, DICache);
-  if (PrimedDIFinder)
+  if (PrimedDIFinder) {
+    TimeTraceScope FunctionScope("DICacheCheck");
     DIFinder = *PrimedDIFinder;
+    DebugInfoFinder Baseline;
+    Baseline.processCompileUnit(F.getSubprogram()->getUnit());
+    {
+      TimeTraceScope FunctionScope("DICacheCheckAsserts");
+      if (!llvm::equal(DIFinder.compile_units(), Baseline.compile_units())) {
+        llvm::errs() << "DIFinder cache compile units mismatch for "
+                     << F.getName() << "\n";
+        exit(42);
+      }
+      if (!llvm::equal(DIFinder.types(), Baseline.types())) {
+        llvm::errs() << "DIFinder cache types mismatch for " << F.getName()
+                     << "\n";
+        exit(43);
+      }
+      if (!llvm::equal(DIFinder.subprograms(), Baseline.subprograms())) {
+        llvm::errs() << "DIFinder cache subprograms mismatch for "
+                     << F.getName() << "\n";
+        exit(44);
+      }
+      if (!llvm::equal(DIFinder.scopes(), Baseline.scopes())) {
+        llvm::errs() << "DIFinder cache scopes mismatch for " << F.getName()
+                     << "\n";
+        exit(45);
+      }
+    }
+  }