Really, really fix PointerUnion3::is

[oota-llvm.git] / include / llvm / ADT / EquivalenceClasses.h

diff --git a/include/llvm/ADT/EquivalenceClasses.h b/include/llvm/ADT/EquivalenceClasses.h
index a866cd67e172db455b98ad0b2bcb08906d058ebf..6e00a217bebfeecc8d3d0172763bc01a9d40ea1a 100644 (file)
--- a/include/llvm/ADT/EquivalenceClasses.h
+++ b/include/llvm/ADT/EquivalenceClasses.h
@@ -1,21 +1,21 @@
 //===-- llvm/ADT/EquivalenceClasses.h - Generic Equiv. Classes --*- C++ -*-===//
-// 
+//
 //                     The LLVM Compiler Infrastructure
 //
-// This file was developed by the LLVM research group and is distributed under
-// the University of Illinois Open Source License. See LICENSE.TXT for details.
-// 
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
 //===----------------------------------------------------------------------===//
-// 
+//
 // Generic implementation of equivalence classes through the use Tarjan's
 // efficient union-find algorithm.
-// 
+//
 //===----------------------------------------------------------------------===//
 
 #ifndef LLVM_ADT_EQUIVALENCECLASSES_H
 #define LLVM_ADT_EQUIVALENCECLASSES_H
 
-#include "llvm/ADT/iterator"
+#include "llvm/ADT/iterator.h"
 #include "llvm/Support/DataTypes.h"
 #include <set>
 
@@ -43,8 +43,8 @@ namespace llvm {
 ///    if (!I->isLeader()) continue;   // Ignore non-leader sets.
 ///    for (EquivalenceClasses<int>::member_iterator MI = EC.member_begin(I);
 ///         MI != EC.member_end(); ++MI)   // Loop over members in this set.
-///      std::cerr << *MI << " ";  // Print member.
-///    std::cerr << "\n";   // Finish set.
+///      cerr << *MI << " ";  // Print member.
+///    cerr << "\n";   // Finish set.
 ///  }
 ///
 /// This example prints:
@@ -128,7 +128,7 @@ public:
       }
     return *this;
   }
-  
+
   //===--------------------------------------------------------------------===//
   // Inspection methods
   //
@@ -138,6 +138,8 @@ public:
   iterator begin() const { return TheMapping.begin(); }
   iterator end() const { return TheMapping.end(); }
 
+  bool empty() const { return TheMapping.empty(); }
+
   /// member_* Iterate over the members of an equivalence class.
   ///
   class member_iterator;
@@ -220,7 +222,7 @@ public:
     // point to the L2 leader node.
     const ECValue &L1LV = *L1.Node, &L2LV = *L2.Node;
     L1LV.getEndOfList()->setNext(&L2LV);
-    
+
     // Update L1LV's end of list pointer.
     L1LV.Leader = L2LV.getEndOfList();