Operation Enhancements

Create an OpInit class to serve as a base for all operation Inits.

Move parsing of operation constructs to separate functions and reference
from multiple places.

Add some commented out new operations.  Coming soon.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@71789 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/utils/TableGen/TGLexer.h b/utils/TableGen/TGLexer.h
index 734dc26..0f27308 100644
--- a/utils/TableGen/TGLexer.h
+++ b/utils/TableGen/TGLexer.h
@@ -45,7 +45,8 @@
     MultiClass, String,
     
     // !keywords.
-    XConcat, XSRA, XSRL, XSHL, XStrConcat, XNameConcat,
+    XConcat, XSRA, XSRL, XSHL, XStrConcat, XNameConcat, //XSubst, XCast,
+    //XForEach,
 
     // Integer value.
     IntVal,