Make pnacl-bccompress add abbreviations for obvious constants.

include/llvm/Bitcode/NaCl/NaClCompressCodeDist.h

 //===-- NaClCompressCodeDist.h -------------------------------------------===//
 //      Defines distribution maps for record codes for pnacl-bccompress.
 //
 //                     The LLVM Compiler Infrastructure
 //
 // This file is distributed under the University of Illinois Open Source
 // License. See LICENSE.TXT for details.
 //
 //===----------------------------------------------------------------------===//
 
@@ skipping 24 matching lines @@
   virtual ~NaClCompressCodeDistElement();
 
   virtual NaClBitcodeDistElement *CreateElement(
       NaClBitcodeDistValue Value) const;
 
   virtual void AddRecord(const NaClBitcodeRecord &Record);
 
   virtual const SmallVectorImpl<NaClBitcodeDist*> *
   GetNestedDistributions() const;
 
-  NaClBitcodeDist *GetSizeDist() {
-    return &SizeDist;
+  NaClBitcodeDist &GetSizeDist() {
+    return SizeDist;
   }
 
   /// The sentinel used to generate instances of this in
   /// a record code distribution map.
   static NaClCompressCodeDistElement Sentinel;
 
 private:
   // Nested blocks used by GetNestedDistributions.
   SmallVector<NaClBitcodeDist*, 1> NestedDists;
 
   /// The distribution of values, based on size.
   NaClBitcodeDist SizeDist;
 };
 
 }
 
 #endif