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llvm-mirror/lib/Support/ValueHolder.cpp
Chris Lattner b7d216cd2f Initial checkin of ValueHolder helper
llvm-svn: 8072
2003-08-23 19:43:16 +00:00

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684 B
C++

//===-- ValueHolder.cpp - Wrapper for Value implementation ----------------===//
//
// This class defines a simple subclass of User, which keeps a pointer to a
// Value, which automatically updates when Value::replaceAllUsesWith is called.
// This is useful when you have pointers to Value's in your pass, but the
// pointers get invalidated when some other portion of the algorithm is
// replacing Values with other Values.
//
//===----------------------------------------------------------------------===//
#include "llvm/Support/ValueHolder.h"
#include "llvm/Type.h"
ValueHolder::ValueHolder(Value *V) : User(Type::TypeTy, Value::TypeVal) {
Operands.push_back(Use(V, this));
}