New TableGen backends for subtarget information. Only command line stuff

active now.  Scheduling itinerary next.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23869 91177308-0d34-0410-b5e6-96231b3b80d8

utils/TableGen/SubtargetEmitter.h

@@ -0,0 +1,37 @@
+//===- SubtargetEmitter.h - Generate subtarget enumerations -----*- C++ -*-===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file was developed by James M. Laskey and is distributed under
+// the University of Illinois Open Source License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// This tablegen backend emits subtarget enumerations.
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef SUBTARGET_EMITTER_H
+#define SUBTARGET_EMITTER_H
+
+#include "TableGenBackend.h"
+
+namespace llvm {
+
+class SubtargetEmitter : public TableGenBackend {
+  RecordKeeper &Records;
+public:
+  SubtargetEmitter(RecordKeeper &R) : Records(R) {}
+
+  // run - Output the subtarget enumerations, returning true on failure.
+  void run(std::ostream &o);
+
+};
+
+
+} // End llvm namespace
+
+#endif
+
+
+