Add rule to build MC'ized CodeEmitter.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@118207 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/Makefile.rules b/Makefile.rules
index 4aa448d1..64e6d2a 100644
--- a/Makefile.rules
+++ b/Makefile.rules
@@ -1721,6 +1721,11 @@
 	$(Echo) "Building $(<F) assembly matcher with tblgen"
 	$(Verb) $(TableGen) -gen-asm-matcher -o $(call SYSPATH, $@) $<
 
+$(TARGET:%=$(ObjDir)/%GenMCCodeEmitter.inc.tmp): \
+$(ObjDir)/%GenMCCodeEmitter.inc.tmp: %.td $(ObjDir)/.dir
+	$(Echo) "Building $(<F) MC code emitter with tblgen"
+	$(Verb) $(TableGen) -gen-emitter -mc-emitter -o $(call SYSPATH, $@) $<
+
 $(TARGET:%=$(ObjDir)/%GenCodeEmitter.inc.tmp): \
 $(ObjDir)/%GenCodeEmitter.inc.tmp: %.td $(ObjDir)/.dir
 	$(Echo) "Building $(<F) code emitter with tblgen"