From: Vikram S. Adve <vadve@cs.uiuc.edu>
Date: Sun, 14 Jul 2002 22:46:32 +0000 (+0000)
Subject: Add a couple of virtual functions to support subclass ConstantExpr.
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=4a717d4a478ec40eb3b42078843af2291203ea21;p=oota-llvm.git

Add a couple of virtual functions to support subclass ConstantExpr.
Note that a ConstantExpr can be of any type, so classof() in most
other subclasses (that discriminate by type) have to check that it
is also not a ConstantExpr.   This is why isConstantExpr() is needed.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@2890 91177308-0d34-0410-b5e6-96231b3b80d8
---

diff --git a/include/llvm/Constant.h b/include/llvm/Constant.h
index 572d1d15ca9..36a26d7f25c 100644
--- a/include/llvm/Constant.h
+++ b/include/llvm/Constant.h
@@ -37,11 +37,20 @@ public:
 
   virtual void print(std::ostream &O) const;
 
+  // isConstantExpr - Return true if this is a ConstantExpr
+  virtual bool isConstantExpr() const { return false; }
+  
   // Methods for support type inquiry through isa, cast, and dyn_cast:
   static inline bool classof(const Constant *) { return true; }
   static inline bool classof(const Value *V) {
     return V->getValueType() == Value::ConstantVal;
   }
+
+  // WARNING: Only to be used by Bytecode & Assembly Parsers!  USER CODE SHOULD
+  // NOT USE THIS!!
+  // Returns the number of uses of OldV that were replaced.
+  virtual unsigned mutateReferences(Value* OldV, Value *NewV) { return 0; }
+  // END WARNING!!
 };
 
 #endif