//===- CPAnalysis.cpp
//
//                     The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// This file implements the constant propagation analysis.
//
//===----------------------------------------------------------------------===//

#include "llvm/ADT/StringMap.h"
#include "llvm/ADT/DenseMap.h"
#include "llvm/IR/Function.h"
#include "llvm/IR/Module.h"
#include "llvm/IR/BasicBlock.h"
#include "llvm/IR/Instruction.h"
#include "llvm/Pass.h"
#include "llvm/Support/raw_ostream.h"
#include "llvm/Support/InstIterator.h"
using namespace llvm;

namespace {

    struct CPAnalysis : public ModulePass {
        static char ID;

        CPAnalysis() : ModulePass(ID) {}

        virtual bool runOnModule(Module &M) {
            unsigned opcode;
            IRBuilder<> builder(M.getContext());

            // Iterating over all the functions in the module
            for (Module::iterator FB = M.begin(), FE = M.end(); FB != FE; ++FB) {

                // get the list to work
                // Worklist(LatticeDefinition, FB, LatticeDefinition.Top());

            }

            // we are not modifying the code so return False
            return false;
        }

    };
}

char CPAnalysis::ID = 0;
static RegisterPass<CPAnalysis> X("constant-propagation-analysis", "Analyze all the functions in a module with a constant propagation lattice");