Index: include/llvm/module.modulemap
===================================================================
--- include/llvm/module.modulemap
+++ include/llvm/module.modulemap
@@ -29,6 +29,10 @@
     textual header "CodeGen/DIEValue.def"
     textual header "CodeGen/RuntimeLibcalls.def"
     textual header "CodeGen/TargetOpcodes.def"
+
+    // This is needed by tablegen which can't pull in all of the dependecies of
+    // llvm/CodeGen since some of those headers are generated by tablegen.
+    textual header "CodeGen/TargetOpcodes.h"
   }
 
   module Target {