grab planning change

Author: David Ungar

Sources/SwiftDriver/Jobs/Planning.swift

@@ -237,9 +237,10 @@ extension Driver {
           let job = try backendJob(input: input, addJobOutputs: addJobOutputs)
           jobGroup.append(job)
         }
+        addJobGroup(jobGroup)
       } else if !(compilerOutputType == .swiftModule && shouldCreateEmitModuleJob) {
-        // We can skip the compile jobs if all we want is a module when it's
-        // built separately.
+             // We can skip the compile jobs if all we want is a module when it's
+             // built separately.
         let job = try compileJob(primaryInputs: primaryInputs,
                                  outputType: compilerOutputType,
                                  addJobOutputs: addJobOutputs,