Rebased PNaCl localmods in LLVM to 223109

include/llvm/Bitcode/NaCl/NaClBitcodeCodeDist.h

+//===-- NaClBitcodeCodeDist.h ---------------------------------------------===//
+//      Defines distribution maps for various values in bitcode records.
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// Defines simple (non-nested) distribution maps for record codes
+// appearing in bitcode records (instances of class NaClBitcodeRecord
+// in NaClBitcodeParser.h).
+
+#ifndef LLVM_BITCODE_NACL_NACLBITCODECODEDIST_H
+#define LLVM_BITCODE_NACL_NACLBITCODECODEDIST_H
+
+#include "llvm/Bitcode/NaCl/NaClBitcodeBitsAndAbbrevsDist.h"
+
+namespace llvm {
+
+// Collects the distribution of record codes/number of bits used for a
+// particular blockID and Code ID.
+class NaClBitcodeCodeDistElement
+    : public NaClBitcodeBitsAndAbbrevsDistElement {
+  NaClBitcodeCodeDistElement(const NaClBitcodeCodeDistElement&)
+      LLVM_DELETED_FUNCTION;
+  void operator=(const NaClBitcodeCodeDistElement&)
+      LLVM_DELETED_FUNCTION;
+
+public:
+  static bool classof(const NaClBitcodeDistElement *Element) {
+    return Element->getKind() >= RDE_CodeDist
+        && Element->getKind() < RDE_CodeDistLast;
+  }
+
+  explicit NaClBitcodeCodeDistElement(
+      NaClBitcodeDistElementKind Kind=RDE_CodeDist)
+      : NaClBitcodeBitsAndAbbrevsDistElement(Kind)
+  {}
+
+  virtual ~NaClBitcodeCodeDistElement();
+
+  virtual NaClBitcodeDistElement *CreateElement(
+      NaClBitcodeDistValue Value) const;
+
+  virtual void GetValueList(const NaClBitcodeRecord &Record,
+                            ValueListType &ValueList) const;
+
+  virtual const char *GetTitle() const;
+
+  virtual const char *GetValueHeader() const;
+
+  virtual void PrintRowValue(raw_ostream &Stream,
+                             NaClBitcodeDistValue Value,
+                             const NaClBitcodeDist *Distribution) const;
+};
+
+// Collects the distribution of record codes/number of bits used for a
+// particular blockID. Assumes distribution elements are instances of
+// NaClBitcodeCodeDistElement.
+class NaClBitcodeCodeDist : public NaClBitcodeDist {
+  NaClBitcodeCodeDist(const NaClBitcodeCodeDist&)
+      LLVM_DELETED_FUNCTION;
+  void operator=(const NaClBitcodeCodeDist&)
+      LLVM_DELETED_FUNCTION;
+
+public:
+  static bool classof(const NaClBitcodeDist *Dist) {
+    return Dist->getKind() >= RD_CodeDist
+        && Dist->getKind() < RD_CodeDistLast;
+  }
+
+protected:
+  NaClBitcodeCodeDist(NaClBitcodeDistElement *Sentinal,
+                      unsigned BlockID,
+                      NaClBitcodeDistKind Kind=RD_CodeDist)
+      : NaClBitcodeDist(RecordStorage, Sentinal, Kind), BlockID(BlockID)
+  {}
+
+  static NaClBitcodeCodeDistElement DefaultSentinel;
+
+public:
+  explicit NaClBitcodeCodeDist(
+      unsigned BlockID,
+      NaClBitcodeCodeDistElement *Sentinel = &DefaultSentinel,
+      NaClBitcodeDistKind Kind=RD_CodeDist)
+      : NaClBitcodeDist(RecordStorage, Sentinel, Kind),
+        BlockID(BlockID)
+  {}
+
+  virtual ~NaClBitcodeCodeDist();
+
+  unsigned GetBlockID() const {
+    return BlockID;
+  }
+
+  // Returns the printable name for record code CodeID in blocks
+  // associated with BlockID.
+  //
+  // Note: If the name is not known, an "UnknownCode" name is
+  // generated and return.
+  static std::string GetCodeName(unsigned CodeID, unsigned BlockID);
+
+private:
+  // The blockID associated with the record code distribution.
+  // Used so that we can look up the print name for each record code.
+  unsigned BlockID;
+};
+
+}
+
+#endif