diff --git a/lldb/include/lldb/Target/Target.h b/lldb/include/lldb/Target/Target.h
--- a/lldb/include/lldb/Target/Target.h
+++ b/lldb/include/lldb/Target/Target.h
@@ -37,8 +37,6 @@
 
 namespace lldb_private {
 
-class ClangModulesDeclVendor;
-
 OptionEnumValues GetDynamicValueTypes();
 
 enum InlineStrategy {
@@ -1336,8 +1334,6 @@
 
   SourceManager &GetSourceManager();
 
-  ClangModulesDeclVendor *GetClangModulesDeclVendor();
-
   // Methods.
   lldb::SearchFilterSP
   GetSearchFilterForModule(const FileSpec *containingModule);
@@ -1421,8 +1417,6 @@
   typedef std::map<lldb::LanguageType, lldb::REPLSP> REPLMap;
   REPLMap m_repl_map;
 
-  std::unique_ptr<ClangModulesDeclVendor> m_clang_modules_decl_vendor_up;
-
   lldb::SourceManagerUP m_source_manager_up;
 
   typedef std::map<lldb::user_id_t, StopHookSP> StopHookCollection;
diff --git a/lldb/source/Plugins/ExpressionParser/Clang/ClangASTSource.h b/lldb/source/Plugins/ExpressionParser/Clang/ClangASTSource.h
--- a/lldb/source/Plugins/ExpressionParser/Clang/ClangASTSource.h
+++ b/lldb/source/Plugins/ExpressionParser/Clang/ClangASTSource.h
@@ -314,6 +314,8 @@
   ///     The imported type.
   CompilerType GuardedCopyType(const CompilerType &src_type);
 
+  std::shared_ptr<ClangModulesDeclVendor> GetClangModulesDeclVendor();
+
 public:
   /// Returns true if a name should be ignored by name lookup.
   ///
diff --git a/lldb/source/Plugins/ExpressionParser/Clang/ClangASTSource.cpp b/lldb/source/Plugins/ExpressionParser/Clang/ClangASTSource.cpp
--- a/lldb/source/Plugins/ExpressionParser/Clang/ClangASTSource.cpp
+++ b/lldb/source/Plugins/ExpressionParser/Clang/ClangASTSource.cpp
@@ -850,8 +850,8 @@
                                        ConstString name) {
   Log *log(lldb_private::GetLogIfAllCategoriesSet(LIBLLDB_LOG_EXPRESSIONS));
 
-  ClangModulesDeclVendor *modules_decl_vendor =
-      m_target->GetClangModulesDeclVendor();
+  std::shared_ptr<ClangModulesDeclVendor> modules_decl_vendor =
+      GetClangModulesDeclVendor();
   if (!modules_decl_vendor)
     return;
 
@@ -1143,8 +1143,8 @@
     // Check the modules only if the debug information didn't have a complete
     // interface.
 
-    if (ClangModulesDeclVendor *modules_decl_vendor =
-            m_target->GetClangModulesDeclVendor()) {
+    if (std::shared_ptr<ClangModulesDeclVendor> modules_decl_vendor =
+            GetClangModulesDeclVendor()) {
       ConstString interface_name(interface_decl->getNameAsString().c_str());
       bool append = false;
       uint32_t max_matches = 1;
@@ -1313,8 +1313,8 @@
     // Check the modules only if the debug information didn't have a complete
     // interface.
 
-    ClangModulesDeclVendor *modules_decl_vendor =
-        m_target->GetClangModulesDeclVendor();
+    std::shared_ptr<ClangModulesDeclVendor> modules_decl_vendor =
+        GetClangModulesDeclVendor();
 
     if (!modules_decl_vendor)
       break;
@@ -1750,3 +1750,10 @@
 
   return m_clang_ast_context->GetType(copied_qual_type);
 }
+
+std::shared_ptr<ClangModulesDeclVendor>
+ClangASTSource::GetClangModulesDeclVendor() {
+  auto persistent_vars = llvm::cast<ClangPersistentVariables>(
+      m_target->GetPersistentExpressionStateForLanguage(lldb::eLanguageTypeC));
+  return persistent_vars->GetClangModulesDeclVendor();
+}
diff --git a/lldb/source/Plugins/ExpressionParser/Clang/ClangExpressionDeclMap.cpp b/lldb/source/Plugins/ExpressionParser/Clang/ClangExpressionDeclMap.cpp
--- a/lldb/source/Plugins/ExpressionParser/Clang/ClangExpressionDeclMap.cpp
+++ b/lldb/source/Plugins/ExpressionParser/Clang/ClangExpressionDeclMap.cpp
@@ -1021,7 +1021,8 @@
   if (!m_target)
     return;
 
-  auto *modules_decl_vendor = m_target->GetClangModulesDeclVendor();
+  std::shared_ptr<ClangModulesDeclVendor> modules_decl_vendor =
+      GetClangModulesDeclVendor();
   if (!modules_decl_vendor)
     return;
 
@@ -1213,8 +1214,8 @@
   std::vector<clang::NamedDecl *> decls_from_modules;
 
   if (target) {
-    if (ClangModulesDeclVendor *decl_vendor =
-            target->GetClangModulesDeclVendor()) {
+    if (std::shared_ptr<ClangModulesDeclVendor> decl_vendor =
+            GetClangModulesDeclVendor()) {
       decl_vendor->FindDecls(name, false, UINT32_MAX, decls_from_modules);
     }
   }
diff --git a/lldb/source/Plugins/ExpressionParser/Clang/ClangExpressionParser.cpp b/lldb/source/Plugins/ExpressionParser/Clang/ClangExpressionParser.cpp
--- a/lldb/source/Plugins/ExpressionParser/Clang/ClangExpressionParser.cpp
+++ b/lldb/source/Plugins/ExpressionParser/Clang/ClangExpressionParser.cpp
@@ -687,11 +687,11 @@
     break;
   }
 
-  if (ClangModulesDeclVendor *decl_vendor =
-          target_sp->GetClangModulesDeclVendor()) {
-    if (auto *clang_persistent_vars = llvm::cast<ClangPersistentVariables>(
-            target_sp->GetPersistentExpressionStateForLanguage(
-                lldb::eLanguageTypeC))) {
+  if (auto *clang_persistent_vars = llvm::cast<ClangPersistentVariables>(
+          target_sp->GetPersistentExpressionStateForLanguage(
+              lldb::eLanguageTypeC))) {
+    if (std::shared_ptr<ClangModulesDeclVendor> decl_vendor =
+            clang_persistent_vars->GetClangModulesDeclVendor()) {
       std::unique_ptr<PPCallbacks> pp_callbacks(
           new LLDBPreprocessorCallbacks(*decl_vendor, *clang_persistent_vars,
                                         m_compiler->getSourceManager()));
diff --git a/lldb/source/Plugins/ExpressionParser/Clang/ClangExpressionSourceCode.cpp b/lldb/source/Plugins/ExpressionParser/Clang/ClangExpressionSourceCode.cpp
--- a/lldb/source/Plugins/ExpressionParser/Clang/ClangExpressionSourceCode.cpp
+++ b/lldb/source/Plugins/ExpressionParser/Clang/ClangExpressionSourceCode.cpp
@@ -318,10 +318,11 @@
       }
     }
 
-    ClangModulesDeclVendor *decl_vendor = target->GetClangModulesDeclVendor();
     auto *persistent_vars = llvm::cast<ClangPersistentVariables>(
         target->GetPersistentExpressionStateForLanguage(lldb::eLanguageTypeC));
-    if (decl_vendor && persistent_vars) {
+    std::shared_ptr<ClangModulesDeclVendor> decl_vendor =
+        persistent_vars->GetClangModulesDeclVendor();
+    if (decl_vendor) {
       const ClangModulesDeclVendor::ModuleVector &hand_imported_modules =
           persistent_vars->GetHandLoadedClangModules();
       ClangModulesDeclVendor::ModuleVector modules_for_macros;
diff --git a/lldb/source/Plugins/ExpressionParser/Clang/ClangPersistentVariables.h b/lldb/source/Plugins/ExpressionParser/Clang/ClangPersistentVariables.h
--- a/lldb/source/Plugins/ExpressionParser/Clang/ClangPersistentVariables.h
+++ b/lldb/source/Plugins/ExpressionParser/Clang/ClangPersistentVariables.h
@@ -19,6 +19,8 @@
 namespace lldb_private {
 
 class ClangASTImporter;
+class ClangModulesDeclVendor;
+class Target;
 class TypeSystemClang;
 
 /// \class ClangPersistentVariables ClangPersistentVariables.h
@@ -30,7 +32,7 @@
 /// 0-based counter for naming result variables.
 class ClangPersistentVariables : public PersistentExpressionState {
 public:
-  ClangPersistentVariables();
+  ClangPersistentVariables(std::shared_ptr<Target> target_sp);
 
   ~ClangPersistentVariables() override = default;
 
@@ -40,6 +42,7 @@
   }
 
   std::shared_ptr<ClangASTImporter> GetClangASTImporter();
+  std::shared_ptr<ClangModulesDeclVendor> GetClangModulesDeclVendor();
 
   lldb::ExpressionVariableSP
   CreatePersistentVariable(const lldb::ValueObjectSP &valobj_sp) override;
@@ -106,6 +109,8 @@
                                    ///these are the highest-
                                    ///< priority source for macros.
   std::shared_ptr<ClangASTImporter> m_ast_importer_sp;
+  std::shared_ptr<ClangModulesDeclVendor> m_modules_decl_vendor_sp;
+  std::shared_ptr<Target> m_target_sp;
 };
 
 } // namespace lldb_private
diff --git a/lldb/source/Plugins/ExpressionParser/Clang/ClangPersistentVariables.cpp b/lldb/source/Plugins/ExpressionParser/Clang/ClangPersistentVariables.cpp
--- a/lldb/source/Plugins/ExpressionParser/Clang/ClangPersistentVariables.cpp
+++ b/lldb/source/Plugins/ExpressionParser/Clang/ClangPersistentVariables.cpp
@@ -8,6 +8,7 @@
 
 #include "ClangPersistentVariables.h"
 #include "ClangASTImporter.h"
+#include "ClangModulesDeclVendor.h"
 
 #include "Plugins/TypeSystem/Clang/TypeSystemClang.h"
 #include "lldb/Core/Value.h"
@@ -23,8 +24,10 @@
 using namespace lldb;
 using namespace lldb_private;
 
-ClangPersistentVariables::ClangPersistentVariables()
-    : lldb_private::PersistentExpressionState(LLVMCastKind::eKindClang) {}
+ClangPersistentVariables::ClangPersistentVariables(
+    std::shared_ptr<Target> target_sp)
+    : lldb_private::PersistentExpressionState(LLVMCastKind::eKindClang),
+      m_target_sp(target_sp) {}
 
 ExpressionVariableSP ClangPersistentVariables::CreatePersistentVariable(
     const lldb::ValueObjectSP &valobj_sp) {
@@ -109,6 +112,15 @@
   return m_ast_importer_sp;
 }
 
+std::shared_ptr<ClangModulesDeclVendor>
+ClangPersistentVariables::GetClangModulesDeclVendor() {
+  if (!m_modules_decl_vendor_sp) {
+    m_modules_decl_vendor_sp.reset(
+        ClangModulesDeclVendor::Create(*m_target_sp.get()));
+  }
+  return m_modules_decl_vendor_sp;
+}
+
 ConstString
 ClangPersistentVariables::GetNextPersistentVariableName(bool is_error) {
   llvm::SmallString<64> name;
diff --git a/lldb/source/Plugins/ExpressionParser/Clang/ClangUserExpression.cpp b/lldb/source/Plugins/ExpressionParser/Clang/ClangUserExpression.cpp
--- a/lldb/source/Plugins/ExpressionParser/Clang/ClangUserExpression.cpp
+++ b/lldb/source/Plugins/ExpressionParser/Clang/ClangUserExpression.cpp
@@ -352,10 +352,6 @@
 
 static void SetupDeclVendor(ExecutionContext &exe_ctx, Target *target,
                             DiagnosticManager &diagnostic_manager) {
-  ClangModulesDeclVendor *decl_vendor = target->GetClangModulesDeclVendor();
-  if (!decl_vendor)
-    return;
-
   if (!target->GetEnableAutoImportClangModules())
     return;
 
@@ -364,6 +360,11 @@
   if (!persistent_state)
     return;
 
+  std::shared_ptr<ClangModulesDeclVendor> decl_vendor =
+      persistent_state->GetClangModulesDeclVendor();
+  if (!decl_vendor)
+    return;
+
   StackFrame *frame = exe_ctx.GetFramePtr();
   if (!frame)
     return;
diff --git a/lldb/source/Plugins/Language/ObjC/ObjCLanguage.cpp b/lldb/source/Plugins/Language/ObjC/ObjCLanguage.cpp
--- a/lldb/source/Plugins/Language/ObjC/ObjCLanguage.cpp
+++ b/lldb/source/Plugins/Language/ObjC/ObjCLanguage.cpp
@@ -990,8 +990,11 @@
       bool result = false;
 
       if (auto *target = exe_scope->CalculateTarget().get()) {
-        if (auto *clang_modules_decl_vendor =
-                target->GetClangModulesDeclVendor()) {
+        auto *persistent_vars = llvm::cast<ClangPersistentVariables>(
+            target->GetPersistentExpressionStateForLanguage(
+                lldb::eLanguageTypeC));
+        if (std::shared_ptr<ClangModulesDeclVendor> clang_modules_decl_vendor =
+                persistent_vars->GetClangModulesDeclVendor()) {
           ConstString key_cs(key);
           auto types = clang_modules_decl_vendor->FindTypes(
               key_cs, /*max_matches*/ UINT32_MAX);
diff --git a/lldb/source/Plugins/TypeSystem/Clang/TypeSystemClang.cpp b/lldb/source/Plugins/TypeSystem/Clang/TypeSystemClang.cpp
--- a/lldb/source/Plugins/TypeSystem/Clang/TypeSystemClang.cpp
+++ b/lldb/source/Plugins/TypeSystem/Clang/TypeSystemClang.cpp
@@ -9653,7 +9653,8 @@
                                                llvm::Triple triple)
     : TypeSystemClang("scratch ASTContext", triple), m_triple(triple),
       m_target_wp(target.shared_from_this()),
-      m_persistent_variables(new ClangPersistentVariables) {
+      m_persistent_variables(
+          new ClangPersistentVariables(target.shared_from_this())) {
   m_scratch_ast_source_up = CreateASTSource();
   m_scratch_ast_source_up->InstallASTContext(*this);
   llvm::IntrusiveRefCntPtr<clang::ExternalASTSource> proxy_ast_source(
diff --git a/lldb/source/Target/CMakeLists.txt b/lldb/source/Target/CMakeLists.txt
--- a/lldb/source/Target/CMakeLists.txt
+++ b/lldb/source/Target/CMakeLists.txt
@@ -81,7 +81,6 @@
     lldbInterpreter
     lldbSymbol
     lldbUtility
-    lldbPluginExpressionParserClang
     lldbPluginProcessUtility
 
   LINK_COMPONENTS
diff --git a/lldb/source/Target/Target.cpp b/lldb/source/Target/Target.cpp
--- a/lldb/source/Target/Target.cpp
+++ b/lldb/source/Target/Target.cpp
@@ -2546,23 +2546,6 @@
   return *m_source_manager_up;
 }
 
-ClangModulesDeclVendor *Target::GetClangModulesDeclVendor() {
-  static std::mutex s_clang_modules_decl_vendor_mutex; // If this is contended
-                                                       // we can make it
-                                                       // per-target
-
-  {
-    std::lock_guard<std::mutex> guard(s_clang_modules_decl_vendor_mutex);
-
-    if (!m_clang_modules_decl_vendor_up) {
-      m_clang_modules_decl_vendor_up.reset(
-          ClangModulesDeclVendor::Create(*this));
-    }
-  }
-
-  return m_clang_modules_decl_vendor_up.get();
-}
-
 Target::StopHookSP Target::CreateStopHook(StopHook::StopHookKind kind) {
   lldb::user_id_t new_uid = ++m_stop_hook_next_id;
   Target::StopHookSP stop_hook_sp;