Index: include/llvm/IR/PassManager.h
===================================================================
--- include/llvm/IR/PassManager.h
+++ include/llvm/IR/PassManager.h
@@ -884,7 +884,7 @@
 /// analysis passes to be re-run to produce fresh results if any are needed.
 struct InvalidateAllAnalysesPass {
   /// \brief Run this pass over some unit of IR.
-  template <typename IRUnitT> PreservedAnalyses run(IRUnitT &Arg) {
+  template <typename IRUnitT> PreservedAnalyses run(IRUnitT &) {
     return PreservedAnalyses::none();
   }

Index: include/llvm/IR/PassManagerInternal.h
===================================================================
--- include/llvm/IR/PassManagerInternal.h
+++ include/llvm/IR/PassManagerInternal.h
@@ -122,7 +122,7 @@
     return *this;
   }

-  PreservedAnalysesT run(IRUnitT &IR, AnalysisManager<IRUnitT> *AM) override {
+  PreservedAnalysesT run(IRUnitT &IR, AnalysisManager<IRUnitT> *) override {
     return Pass.run(IR);
   }
   StringRef name() override { return PassT::name(); }