Reinstate target dependencies on Table_gen targets in CMake

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@74003 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/cmake/modules/AddLLVM.cmake b/cmake/modules/AddLLVM.cmake
index b196c63..660bd70 100755
--- a/cmake/modules/AddLLVM.cmake
+++ b/cmake/modules/AddLLVM.cmake
@@ -58,4 +58,7 @@
   endif( TABLEGEN_OUTPUT )
   include_directories(BEFORE ${CMAKE_CURRENT_BINARY_DIR})
   add_llvm_library(LLVM${target_name} ${ARGN} ${TABLEGEN_OUTPUT})
+  if ( TABLEGEN_OUTPUT )
+    add_dependencies(LLVM${target_name} ${target_name}Table_gen)
+  endif (TABLEGEN_OUTPUT)
 endmacro(add_llvm_target)