Index: llvm/CMakeLists.txt
===================================================================
--- llvm/CMakeLists.txt
+++ llvm/CMakeLists.txt
@@ -669,6 +669,10 @@
 endif()
 option(LLVM_ENABLE_PLUGINS "Enable plugin support" ${LLVM_ENABLE_PLUGINS_default})
 
+set(LLVM_AUTOLOAD_PLUGINS "" CACHE STRING
+    "List of plugin paths to attempt autoloading")
+mark_as_advanced(LLVM_AUTOLOAD_PLUGINS)
+
 include(HandleLLVMOptions)
 
 if(CMAKE_VERSION VERSION_LESS 3.12)
Index: llvm/include/llvm/Config/config.h.cmake
===================================================================
--- llvm/include/llvm/Config/config.h.cmake
+++ llvm/include/llvm/Config/config.h.cmake
@@ -344,4 +344,7 @@
 /* Whether Timers signpost passes in Xcode Instruments */
 #cmakedefine01 LLVM_SUPPORT_XCODE_SIGNPOSTS
 
+/* Define to the list of plugins to autoload */
+#define LLVM_AUTOLOAD_PLUGINS "${LLVM_AUTOLOAD_PLUGINS}"
+
 #endif
Index: llvm/lib/Support/PluginLoader.cpp
===================================================================
--- llvm/lib/Support/PluginLoader.cpp
+++ llvm/lib/Support/PluginLoader.cpp
@@ -12,6 +12,7 @@
 
 #define DONT_GET_PLUGIN_LOADER_OPTION
 #include "llvm/Support/PluginLoader.h"
+#include "llvm/Config/config.h"
 #include "llvm/Support/DynamicLibrary.h"
 #include "llvm/Support/ManagedStatic.h"
 #include "llvm/Support/Mutex.h"
@@ -44,3 +45,22 @@
          "Asking for an out of bounds plugin");
   return (*Plugins)[num];
 }
+
+struct PluginAutoLoader {
+  PluginAutoLoader() {
+    SmallVector<StringRef, 4> PluginList;
+    StringRef(LLVM_AUTOLOAD_PLUGINS).split(PluginList, ';', -1, false);
+
+    for (auto &Val : PluginList) {
+      sys::SmartScopedLock<true> Lock(*PluginsLock);
+      std::string Filename = Val.str();
+      std::string Error;
+      if (!sys::DynamicLibrary::LoadLibraryPermanently(Filename.c_str(),
+                                                       &Error)) {
+        Plugins->push_back(Filename);
+      }
+    }
+  }
+};
+
+static PluginAutoLoader AutoPlugins;