diff --git a/llvm/lib/Transforms/IPO/ArgumentPromotion.cpp b/llvm/lib/Transforms/IPO/ArgumentPromotion.cpp
index fe5cd7671213cf..5f24d53da0b31f 100644
--- a/llvm/lib/Transforms/IPO/ArgumentPromotion.cpp
+++ b/llvm/lib/Transforms/IPO/ArgumentPromotion.cpp
@@ -1052,6 +1052,7 @@ PreservedAnalyses ArgumentPromotionPass::run(LazyCallGraph::SCC &C,
       // swaps out the particular function mapped to a particular node in the
       // graph.
       C.getOuterRefSCC().replaceNodeFunction(N, *NewF);
+      FAM.clear(OldF, OldF.getName());
       OldF.eraseFromParent();
     }