Index: llvm/trunk/lib/Target/WebAssembly/WebAssemblyRegStackify.cpp
===================================================================
--- llvm/trunk/lib/Target/WebAssembly/WebAssemblyRegStackify.cpp
+++ llvm/trunk/lib/Target/WebAssembly/WebAssemblyRegStackify.cpp
@@ -812,8 +812,7 @@
       // the next instruction we can build a tree on.
       if (Insert != &*MII) {
         ImposeStackOrdering(&*MII);
-        MII = std::prev(
-            llvm::make_reverse_iterator(MachineBasicBlock::iterator(Insert)));
+        MII = MachineBasicBlock::iterator(Insert).getReverse();
         Changed = true;
       }
     }