Use StringMap instead of std::map<std::string, SDNode*>.

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

diff --git a/include/llvm/Value.h b/include/llvm/Value.h
index 67af6edb8f98a6475636038f8125b0c5709372eb..6d4d7cc74ac9bea27ed04d14d7e59f6f12fef077 100644 (file)
--- a/include/llvm/Value.h
+++ b/include/llvm/Value.h
@@ -2,13 +2,12 @@
 //
 //                     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.
 //
 //===----------------------------------------------------------------------===//
 //
 // This file declares the Value class. 
-// This file also defines the Use<> template for users of value.
 //
 //===----------------------------------------------------------------------===//
 
@@ -18,7 +17,7 @@
 #include "llvm/AbstractTypeUser.h"
 #include "llvm/Use.h"
 #include "llvm/Support/Casting.h"
-#include "llvm/Support/Streams.h"
+#include <iosfwd>
 #include <string>
 
 namespace llvm {
@@ -46,7 +45,7 @@ typedef StringMapEntry<Value*> ValueName;
 /// the super class of other important classes such as Instruction and Function.
 /// All Values have a Type. Type is not a subclass of Value. All types can have
 /// a name and they should belong to some Module. Setting the name on the Value
-/// automatically update's the module's symbol table.
+/// automatically updates the module's symbol table.
 ///
 /// Every value has a "use list" that keeps track of which other Values are
 /// using this Value.
@@ -95,6 +94,10 @@ public:
   /// their end.  This always returns a non-null pointer.
   const char *getNameStart() const;
   
+  /// isName - Return true if this value has the name specified by the provided
+  /// nul terminated string.
+  bool isName(const char *N) const;
+  
   /// getNameLen - Return the length of the string, correctly handling nul
   /// characters embedded into them.
   unsigned getNameLen() const;
@@ -158,12 +161,14 @@ public:
   ///
   bool hasNUsesOrMore(unsigned N) const;
 
+  bool isUsedInBasicBlock(BasicBlock *BB) const;
+
   /// getNumUses - This method computes the number of uses of this Value.  This
   /// is a linear time operation.  Use hasOneUse, hasNUses, or hasMoreThanNUses
   /// to check for specific values.
   unsigned getNumUses() const;
 
-  /// addUse/killUse - These two methods should only be used by the Use class.
+  /// addUse - This method should only be used by the Use class.
   ///
   void addUse(Use &U) { U.addToList(&UseList); }
 
@@ -187,6 +192,7 @@ public:
     ConstantVectorVal,        // This is an instance of ConstantVector
     ConstantPointerNullVal,   // This is an instance of ConstantPointerNull
     InlineAsmVal,             // This is an instance of InlineAsm
+    PseudoSourceValueVal,     // This is an instance of PseudoSourceValue
     InstructionVal,           // This is an instance of Instruction
     
     // Markers:
@@ -215,6 +221,14 @@ public:
   /// getRawType - This should only be used to implement the vmcore library.
   ///
   const Type *getRawType() const { return Ty.getRawType(); }
+
+  /// stripPointerCasts - This method strips off any unneeded pointer
+  /// casts from the specified value, returning the original uncasted value.
+  /// Note that the returned value is guaranteed to have pointer type.
+  Value *stripPointerCasts();
+  const Value *stripPointerCasts() const {
+    return const_cast<Value*>(this)->stripPointerCasts();
+  }
 };
 
 inline std::ostream &operator<<(std::ostream &OS, const Value &V) {
@@ -222,14 +236,9 @@ inline std::ostream &operator<<(std::ostream &OS, const Value &V) {
   return OS;
 }
 
-void Use::init(Value *v, User *user) {
-  Val = v;
-  U = user;
-  if (Val) Val->addUse(*this);
-}
-
-Use::~Use() {
-  if (Val) removeFromList();
+void Use::init(Value *V, User *) {
+  Val = V;
+  if (V) V->addUse(*this);
 }
 
 void Use::set(Value *V) {