diff --git a/include/swift/SIL/SILModule.h b/include/swift/SIL/SILModule.h
index 2f81685e17a..bffe5c16c20 100644
--- a/include/swift/SIL/SILModule.h
+++ b/include/swift/SIL/SILModule.h
@@ -210,6 +210,9 @@ public:
   /// Erase a function from the module.
   void eraseFunction(SILFunction *F);
 
+  /// Erase a global SIL variable from the module.
+  void eraseGlobalVariable(SILGlobalVariable *G);
+
   /// Construct a SIL module from an AST module.
   ///
   /// The module will be constructed in the Raw stage. The provided AST module
diff --git a/lib/SIL/SILModule.cpp b/lib/SIL/SILModule.cpp
index 0da39b1d004..f7aec1cbcdb 100644
--- a/lib/SIL/SILModule.cpp
+++ b/lib/SIL/SILModule.cpp
@@ -548,6 +548,12 @@ void SILModule::eraseFunction(SILFunction *F) {
   }
 }
 
+/// Erase a global SIL variable from the module.
+void SILModule::eraseGlobalVariable(SILGlobalVariable *G) {
+  GlobalVariableTable.erase(G->getName());
+  getSILGlobalList().erase(G);
+}
+
 SILVTable *SILModule::lookUpVTable(const ClassDecl *C,
                                    std::function<void(SILFunction *)> Callback) {
   if (!C)