The TargetData is not used for the isPowerOfTwo determination. It has never

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

diff --git a/include/llvm/Use.h b/include/llvm/Use.h
index c4b8851d9351e8bf35511518339f09c3632a0ce7..80804459cc339e017d0073dc47519d5dc941a1fe 100644 (file)
--- a/include/llvm/Use.h
+++ b/include/llvm/Use.h
@@ -26,6 +26,8 @@
 #define LLVM_USE_H
 
 #include "llvm/ADT/PointerIntPair.h"
+#include "llvm/Support/Compiler.h"
+#include <cstddef>
 #include <iterator>
 
 namespace llvm {
@@ -59,9 +61,13 @@ public:
   /// that also works with less standard-compliant compilers
   void swap(Use &RHS);
 
+  // A type for the word following an array of hung-off Uses in memory, which is
+  // a pointer back to their User with the bottom bit set.
+  typedef PointerIntPair<User*, 1, unsigned> UserRef;
+
 private:
   /// Copy ctor - do not implement
-  Use(const Use &U);
+  Use(const Use &U) LLVM_DELETED_FUNCTION;
 
   /// Destructor - Only for zap()
   ~Use() {
@@ -107,13 +113,16 @@ public:
   Use *getNext() const { return Next; }
 
   
+  /// initTags - initialize the waymarking tags on an array of Uses, so that
+  /// getUser() can find the User from any of those Uses.
+  static Use *initTags(Use *Start, Use *Stop);
+
   /// zap - This is used to destroy Use operands when the number of operands of
   /// a User changes.
   static void zap(Use *Start, const Use *Stop, bool del = false);
 
 private:
   const Use* getImpliedUser() const;
-  static Use *initTags(Use *Start, Use *Stop);
   
   Value *Val;
   Use *Next;
@@ -135,7 +144,6 @@ private:
   }
 
   friend class Value;
-  friend class User;
 };
 
 // simplify_type - Allow clients to treat uses just like values when using
@@ -207,15 +215,6 @@ public:
   unsigned getOperandNo() const;
 };
 
-//===----------------------------------------------------------------------===//
-//                         AugmentedUse layout struct
-//===----------------------------------------------------------------------===//
-
-struct AugmentedUse : public Use {
-  PointerIntPair<User*, 1, unsigned> ref;
-  AugmentedUse(); // not implemented
-};
-
 } // End llvm namespace
 
 #endif