Index: cmake/modules/AddLLVM.cmake
===================================================================
--- cmake/modules/AddLLVM.cmake
+++ cmake/modules/AddLLVM.cmake
@@ -671,7 +671,8 @@
 endmacro(add_llvm_library name)
 
 macro(add_llvm_loadable_module name)
-  llvm_add_library(${name} MODULE ${ARGN})
+  cmake_parse_arguments(ARG "NO_INSTALL" "" "" ${ARGN})
+  llvm_add_library(${name} MODULE ${ARG_UNPARSED_ARGUMENTS})
   if(NOT TARGET ${name})
     # Add empty "phony" target
     add_custom_target(${name})
@@ -693,10 +694,12 @@
           set_property(GLOBAL PROPERTY LLVM_HAS_EXPORTS True)
         endif()
 
-        install(TARGETS ${name}
-                ${export_to_llvmexports}
-                LIBRARY DESTINATION ${dlldir}
-                ARCHIVE DESTINATION lib${LLVM_LIBDIR_SUFFIX})
+        if (NOT ARG_NO_INSTALL)
+          install(TARGETS ${name}
+                  ${export_to_llvmexports}
+                  LIBRARY DESTINATION ${dlldir}
+                  ARCHIVE DESTINATION lib${LLVM_LIBDIR_SUFFIX})
+        endif()
       endif()
       set_property(GLOBAL APPEND PROPERTY LLVM_EXPORTS ${name})
     endif()
Index: unittests/Passes/CMakeLists.txt
===================================================================
--- unittests/Passes/CMakeLists.txt
+++ unittests/Passes/CMakeLists.txt
@@ -14,7 +14,7 @@
 export_executable_symbols(PluginsTests)
 
 set(LLVM_LINK_COMPONENTS)
-add_llvm_loadable_module(TestPlugin
+add_llvm_loadable_module(TestPlugin NO_INSTALL
   TestPlugin.cpp
   )