1 files changed, 9 insertions, 0 deletions
diff --git a/llvm/lib/Analysis/CallGraph.cpp b/llvm/lib/Analysis/CallGraph.cpp
index 8e8a5017..99cdf3f 100644
--- a/llvm/lib/Analysis/CallGraph.cpp
+++ b/llvm/lib/Analysis/CallGraph.cpp
@@ -57,6 +57,15 @@ CallGraph::~CallGraph() {
 #endif
 }
 
+bool CallGraph::invalidate(Module &, const PreservedAnalyses &PA,
+                           ModuleAnalysisManager::Invalidator &) {
+  // Check whether the analysis, all analyses on functions, or the function's
+  // CFG have been preserved.
+  auto PAC = PA.getChecker<CallGraphAnalysis>();
+  return !(PAC.preserved() || PAC.preservedSet<AllAnalysesOn<Module>>() ||
+           PAC.preservedSet<CFGAnalyses>());
+}
+
 void CallGraph::addToCallGraph(Function *F) {
   CallGraphNode *Node = getOrInsertFunction(F);