//===-- Constants.cpp - Implement Constant nodes --------------------------===//
//
// 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 implements the Constant* classes...
//
//===----------------------------------------------------------------------===//
#include "llvm/Constants.h"
#include "ConstantFolding.h"
#include "llvm/DerivedTypes.h"
#include "llvm/GlobalValue.h"
#include "llvm/Instructions.h"
#include "llvm/SymbolTable.h"
#include "llvm/Module.h"
#include "llvm/ADT/StringExtras.h"
#include <algorithm>
#include <iostream>
using namespace llvm;
ConstantBool *ConstantBool::True = new ConstantBool(true);
ConstantBool *ConstantBool::False = new ConstantBool(false);
//===----------------------------------------------------------------------===//
// Constant Class
//===----------------------------------------------------------------------===//
void Constant::setName(const std::string &Name) {
// Constants can't take names.
}
void Constant::destroyConstantImpl() {
// When a Constant is destroyed, there may be lingering
// references to the constant by other constants in the constant pool. These
// constants are implicitly dependent on the module that is being deleted,
// but they don't know that. Because we only find out when the CPV is
// deleted, we must now notify all of our users (that should only be
// Constants) that they are, in fact, invalid now and should be deleted.
//
while (!use_empty()) {
Value *V = use_back();
#ifndef NDEBUG // Only in -g mode...
if (!isa<Constant>(V))
