Initial checkin of useful wrappers around the Target classes, for now, only ValueType and

[oota-llvm.git] / utils / TableGen / CodeGenWrappers.h

diff --git a/utils/TableGen/CodeGenWrappers.h b/utils/TableGen/CodeGenWrappers.h
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+++ b/utils/TableGen/CodeGenWrappers.h
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+//===- CodeGenWrappers.h - Code Generation Class Wrappers -------*- C++ -*-===//
+//
+// These classes wrap target description classes used by the various code
+// generation TableGen backends.  This makes it easier to access the data and
+// provides a single place that needs to check it for validity.  All of these
+// classes throw exceptions on error conditions.
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef CODEGENWRAPPERS_H
+#define CODEGENWRAPPERS_H
+
+#include "llvm/CodeGen/ValueTypes.h"
+#include <iosfwd>
+#include <vector>
+class Record;
+class RecordKeeper;
+
+/// getValueType - Return the MVT::ValueType that the specified TableGen record
+/// corresponds to.
+MVT::ValueType getValueType(Record *Rec);
+
+std::ostream &operator<<(std::ostream &OS, MVT::ValueType T);
+
+
+
+/// CodeGenTarget - This class corresponds to the Target class in the .td files.
+///
+class CodeGenTarget {
+  Record *TargetRec;
+  std::vector<Record*> CalleeSavedRegisters;
+  MVT::ValueType PointerType;
+
+public:
+  CodeGenTarget();
+
+  Record *getTargetRecord() const { return TargetRec; }
+  const std::string &getName() const;
+
+  const std::vector<Record*> &getCalleeSavedRegisters() const {
+    return CalleeSavedRegisters;
+  }
+
+  // getInstructionSet - Return the InstructionSet object...
+  Record *getInstructionSet() const;
+
+  // getInstructionSet - Return the CodeGenInstructionSet object for this
+  // target, lazily reading it from the record keeper as needed.
+  // CodeGenInstructionSet *getInstructionSet -
+};
+
+#endif