diff --git a/llvm/lib/Transforms/IPO/ArgumentPromotion.cpp b/llvm/lib/Transforms/IPO/ArgumentPromotion.cpp
--- a/llvm/lib/Transforms/IPO/ArgumentPromotion.cpp
+++ b/llvm/lib/Transforms/IPO/ArgumentPromotion.cpp
@@ -1051,7 +1051,10 @@
   if (!Changed)
     return PreservedAnalyses::all();
 
-  return PreservedAnalyses::none();
+  PreservedAnalyses PA;
+  // We've cleared out analyses for deleted functions.
+  PA.preserve<FunctionAnalysisManagerCGSCCProxy>();
+  return PA;
 }
 
 namespace {