1 files changed, 72 insertions, 0 deletions
diff --git a/contrib/llvm/utils/TableGen/SubtargetEmitter.h b/contrib/llvm/utils/TableGen/SubtargetEmitter.h
new file mode 100644
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+++ b/contrib/llvm/utils/TableGen/SubtargetEmitter.h
@@ -0,0 +1,72 @@
+//===- SubtargetEmitter.h - Generate subtarget enumerations -----*- C++ -*-===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file 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 "llvm/TableGen/TableGenBackend.h"
+#include "llvm/MC/MCInstrItineraries.h"
+#include <vector>
+#include <map>
+#include <string>
+
+
+namespace llvm {
+
+class SubtargetEmitter : public TableGenBackend {
+
+  RecordKeeper &Records;
+  std::string Target;
+  bool HasItineraries;
+
+  void Enumeration(raw_ostream &OS, const char *ClassName, bool isBits);
+  unsigned FeatureKeyValues(raw_ostream &OS);
+  unsigned CPUKeyValues(raw_ostream &OS);
+  unsigned CollectAllItinClasses(raw_ostream &OS,
+                                 std::map<std::string,unsigned> &ItinClassesMap,
+                                 std::vector<Record*> &ItinClassList);
+  void FormItineraryStageString(const std::string &Names,
+                                Record *ItinData, std::string &ItinString,
+                                unsigned &NStages);
+  void FormItineraryOperandCycleString(Record *ItinData, std::string &ItinString,
+                                       unsigned &NOperandCycles);
+  void FormItineraryBypassString(const std::string &Names,
+                                 Record *ItinData,
+                                 std::string &ItinString, unsigned NOperandCycles);
+  void EmitStageAndOperandCycleData(raw_ostream &OS, unsigned NItinClasses,
+                     std::map<std::string, unsigned> &ItinClassesMap,
+                     std::vector<Record*> &ItinClassList,
+                     std::vector<std::vector<InstrItinerary> > &ProcList);
+  void EmitProcessorData(raw_ostream &OS,
+                         std::vector<Record*> &ItinClassList,
+                         std::vector<std::vector<InstrItinerary> > &ProcList);
+  void EmitProcessorLookup(raw_ostream &OS);
+  void EmitData(raw_ostream &OS);
+  void ParseFeaturesFunction(raw_ostream &OS, unsigned NumFeatures,
+                             unsigned NumProcs);
+
+public:
+  SubtargetEmitter(RecordKeeper &R) : Records(R), HasItineraries(false) {}
+
+  // run - Output the subtarget enumerations, returning true on failure.
+  void run(raw_ostream &o);
+
+};
+
+
+} // End llvm namespace
+
+#endif
+
+
+