remove dead method.

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

diff --git a/include/llvm/Value.h b/include/llvm/Value.h
index f2fa36decafcaccf21875ed238b02cc53c1f21d7..d06cbc05c6a5a7850a1e2d7b2d46d2a2c54f813f 100644 (file)
--- a/include/llvm/Value.h
+++ b/include/llvm/Value.h
@@ -17,7 +17,6 @@
 #include "llvm/AbstractTypeUser.h"
 #include "llvm/Use.h"
 #include "llvm/ADT/StringRef.h"
-#include "llvm/ADT/Twine.h"
 #include "llvm/Support/Casting.h"
 #include <string>
 
@@ -42,7 +41,8 @@ class raw_ostream;
 class AssemblyAnnotationWriter;
 class ValueHandleBase;
 class LLVMContext;
-class MetadataContextImpl;
+class Twine;
+class MDNode;
 
 //===----------------------------------------------------------------------===//
 //                                 Value Class
@@ -57,7 +57,7 @@ class MetadataContextImpl;
 ///
 /// Every value has a "use list" that keeps track of which other Values are
 /// using this Value.  A Value can also have an arbitrary number of ValueHandle
-/// objects that watch it and listen to RAUW and Destroy events see
+/// objects that watch it and listen to RAUW and Destroy events.  See
 /// llvm/Support/ValueHandle.h for details.
 ///
 /// @brief LLVM Value Representation
@@ -71,11 +71,12 @@ protected:
   /// interpretation.
   unsigned char SubclassOptionalData : 7;
 
+private:
   /// SubclassData - This member is defined by this class, but is not used for
   /// anything.  Subclasses can use it to hold whatever state they find useful.
   /// This field is initialized to zero by the ctor.
   unsigned short SubclassData;
-private:
+
   PATypeHolder VTy;
   Use *UseList;
 
@@ -214,6 +215,7 @@ public:
     ConstantFPVal,            // This is an instance of ConstantFP
     ConstantArrayVal,         // This is an instance of ConstantArray
     ConstantStructVal,        // This is an instance of ConstantStruct
+    ConstantUnionVal,         // This is an instance of ConstantUnion
     ConstantVectorVal,        // This is an instance of ConstantVector
     ConstantPointerNullVal,   // This is an instance of ConstantPointerNull
     MDNodeVal,                // This is an instance of MDNode
@@ -284,10 +286,11 @@ public:
   /// getUnderlyingObject - This method strips off any GEP address adjustments
   /// and pointer casts from the specified value, returning the original object
   /// being addressed.  Note that the returned value has pointer type if the
-  /// specified value does.
-  Value *getUnderlyingObject();
-  const Value *getUnderlyingObject() const {
-    return const_cast<Value*>(this)->getUnderlyingObject();
+  /// specified value does.  If the MaxLookup value is non-zero, it limits the
+  /// number of instructions to be stripped off.
+  Value *getUnderlyingObject(unsigned MaxLookup = 6);
+  const Value *getUnderlyingObject(unsigned MaxLookup = 6) const {
+    return const_cast<Value*>(this)->getUnderlyingObject(MaxLookup);
   }
   
   /// DoPHITranslation - If this value is a PHI node with CurBB as its parent,
@@ -300,6 +303,10 @@ public:
                                 const BasicBlock *PredBB) const{
     return const_cast<Value*>(this)->DoPHITranslation(CurBB, PredBB);
   }
+  
+protected:
+  unsigned short getSubclassDataFromValue() const { return SubclassData; }
+  void setValueSubclassData(unsigned short D) { SubclassData = D; }
 };
 
 inline raw_ostream &operator<<(raw_ostream &OS, const Value &V) {
@@ -346,6 +353,9 @@ template <> inline bool isa_impl<GlobalValue, Value>(const Value &Val) {
   return isa<GlobalVariable>(Val) || isa<Function>(Val) ||
          isa<GlobalAlias>(Val);
 }
+template <> inline bool isa_impl<MDNode, Value>(const Value &Val) {
+  return Val.getValueID() == Value::MDNodeVal;
+}
   
   
 // Value* is only 4-byte aligned.