CMake: Fixed dependencies of .cpp source files on .td and tablegenned
files.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@59325 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/cmake/modules/LLVMProcessSources.cmake b/cmake/modules/LLVMProcessSources.cmake
new file mode 100644
index 0000000..0dad3fb
--- /dev/null
+++ b/cmake/modules/LLVMProcessSources.cmake
@@ -0,0 +1,13 @@
+include(AddFileDependencies)
+
+function(llvm_process_sources)
+  set( sources ${ARGN} )
+  # Create file dependencies on the tablegenned files, if any.  Seems
+  # that this is not strictly needed, as dependencies of the .cpp
+  # sources on the tablegenned .inc files are detected and handled,
+  # but just in case...
+  foreach( s ${sources} )
+    set( f ${CMAKE_CURRENT_SOURCE_DIR}/${s} )
+    add_file_dependencies( ${f} ${TABLEGEN_OUTPUT} )
+  endforeach(s)
+endfunction(llvm_process_sources)