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
@@ -109,7 +109,9 @@
     Error = true;
     return false;
   }
-  Input = Mangled;
+  size_t Dot = Mangled.find('.');
+  Input = Mangled.substr(0, Dot);
+  StringView Suffix = Mangled.dropFront(Dot);
 
   demanglePath(rust_demangle::InType::No);
 
@@ -121,6 +123,12 @@
   if (Position != Input.size())
     Error = true;
 
+  if (!Suffix.empty()) {
+    print(" (");
+    print(Suffix);
+    print(")");
+  }
+
   return !Error;
 }
 
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
@@ -448,6 +448,14 @@
 CHECK: _RIC7backrefKBa_E
        _RIC7backrefKBa_E
 
+; Dot suffix
+
+CHECK: dot (.llvm.1234)
+       _RC3dot.llvm.1234
+
+CHECK: dot (.llvm.6789)
+       _RC3dotC5crate.llvm.6789
+
 ; Invalid mangled characters
 
 CHECK: _RNvC2a.1c