1 //===-- ValueHolder.cpp - Wrapper for Value implementation ----------------===//
3 // The LLVM Compiler Infrastructure
5 // This file was developed by the LLVM research group and is distributed under
6 // the University of Illinois Open Source License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
10 // This class defines a simple subclass of User, which keeps a pointer to a
11 // Value, which automatically updates when Value::replaceAllUsesWith is called.
12 // This is useful when you have pointers to Value's in your pass, but the
13 // pointers get invalidated when some other portion of the algorithm is
14 // replacing Values with other Values.
16 //===----------------------------------------------------------------------===//
18 #include "llvm/Support/ValueHolder.h"
19 #include "llvm/Type.h"
23 ValueHolder::ValueHolder(Value *V) : User(Type::TypeTy, Value::TypeVal) {
24 Operands.push_back(Use(V, this));
27 } // End llvm namespace