diff --git a/llvm/lib/Demangle/RustDemangle.cpp b/llvm/lib/Demangle/RustDemangle.cpp
--- a/llvm/lib/Demangle/RustDemangle.cpp
+++ b/llvm/lib/Demangle/RustDemangle.cpp
@@ -452,6 +452,24 @@
     print(")");
     break;
   }
+  case 'R':
+    print("&");
+    // FIXME demangle [<lifetime>].
+    demangleType();
+    break;
+  case 'Q':
+    print("&mut ");
+    // FIXME demangle [<lifetime>].
+    demangleType();
+    break;
+  case 'P':
+    print("*const ");
+    demangleType();
+    break;
+  case 'O':
+    print("*mut ");
+    demangleType();
+    break;
   case 'C':
   case 'M':
   case 'X':
diff --git a/llvm/test/Demangle/rust.test b/llvm/test/Demangle/rust.test
--- a/llvm/test/Demangle/rust.test
+++ b/llvm/test/Demangle/rust.test
@@ -178,6 +178,18 @@
 CHECK: types::<(_, _, _)>
        _RIC5typesTpppEE
 
+CHECK: types::<&u8>
+       _RIC5typesRhE
+
+CHECK: types::<&mut u8>
+       _RIC5typesQhE
+
+CHECK: types::<*const u8>
+       _RIC5typesPhE
+
+CHECK: types::<*mut u8>
+       _RIC5typesOhE
+
 ; Integer constants. Test value demangling.
 
 CHECK: integer::<0>