Live interval splitting:

[oota-llvm.git] / include / llvm / Use.h

diff --git a/include/llvm/Use.h b/include/llvm/Use.h
index d36e66fe06a25245d5d5206aa5e0c0bdf86fa7a1..ce13648f9b883314ad80378e1f19744b52360cd2 100644 (file)
--- a/include/llvm/Use.h
+++ b/include/llvm/Use.h
@@ -120,6 +120,9 @@ public:
   bool operator!=(const _Self &x) const {
     return !operator==(x);
   }
+  
+  /// atEnd - return true if this iterator is equal to use_end() on the value.
+  bool atEnd() const { return U == 0; }
 
   // Iterator traversal: forward iteration only
   _Self &operator++() {          // Preincrement
@@ -132,7 +135,7 @@ public:
   }
 
   // Retrieve a reference to the current SCC
-   UserTy *operator*() const {
+  UserTy *operator*() const {
     assert(U && "Cannot increment end iterator!");
     return U->getUser();
   }
@@ -140,8 +143,37 @@ public:
   UserTy *operator->() const { return operator*(); }
 
   Use &getUse() const { return *U; }
+  
+  /// getOperandNo - Return the operand # of this use in its User.  Defined in
+  /// User.h
+  ///
+  unsigned getOperandNo() const;
 };
 
+
+template<> struct simplify_type<value_use_iterator<User> > {
+  typedef User* SimpleType;
+  
+  static SimpleType getSimplifiedValue(const value_use_iterator<User> &Val) {
+    return *Val;
+  }
+};
+
+template<> struct simplify_type<const value_use_iterator<User> >
+ : public simplify_type<value_use_iterator<User> > {};
+
+template<> struct simplify_type<value_use_iterator<const User> > {
+  typedef const User* SimpleType;
+  
+  static SimpleType getSimplifiedValue(const 
+                                       value_use_iterator<const User> &Val) {
+    return *Val;
+  }
+};
+
+template<> struct simplify_type<const value_use_iterator<const User> >
+  : public simplify_type<value_use_iterator<const User> > {};
+
 } // End llvm namespace
 
 #endif