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clone-checker.cpp
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clone-checker.cpp
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#include "trace_gep.h"
#include <getopt.h>
#include <cassert>
#include <chrono>
#include <deque>
#include <fstream>
#include <iostream>
#include <random>
#include <string>
#include <unordered_set>
#include <unordered_map>
#include <llvm/Analysis/Passes.h>
#include <llvm/Analysis/LazyValueInfo.h>
#include <llvm/IR/Function.h>
#include <llvm/IR/Instructions.h>
#include <llvm/IR/Intrinsics.h>
#include <llvm/IR/LLVMContext.h>
#include <llvm/IR/Module.h>
#include <llvm/IR/DebugLoc.h>
#include <llvm/IR/DebugInfoMetadata.h>
#include <llvm/IR/DebugInfo.h>
#include <llvm/IRReader/IRReader.h>
#include <llvm/Support/SourceMgr.h>
#include <llvm/Support/raw_os_ostream.h>
#include <llvm/Transforms/Utils/FunctionComparator.h>
#include"debug_location.h"
static const struct option options[] = {
{"functionF", required_argument, NULL, 'f'},
{"functionG", required_argument, NULL, 'g'},
{"help", no_argument, NULL, 'h'},
};
::llvm::GlobalNumberState GlobalNumbers;
::llvm::raw_os_ostream llvm_cout(::std::cout);
::llvm::raw_ostream &llvm::dbgs();
int compareBB(::llvm::Function *G, ::llvm::Function *F, const ::llvm::BasicBlock* BBL, const ::llvm::BasicBlock *BBR)
{
int flag = 0;
::llvm::BasicBlock::const_iterator InstL = BBL->begin(), InstLE = BBL->end();
::llvm::BasicBlock::const_iterator InstR = BBR->begin(), InstRE = BBR->end();
///static const unsigned dbg_kind_id = LLVMGetMDKindID("dbg", 3);
do {
::llvm::MDNode *MD = InstL->getMetadata("DISubprogramKind");
if(InstL->getOpcode() == InstR->getOpcode() && InstL->getNumOperands() == InstR->getNumOperands() ) {
for(int i = 0; i < InstL->getNumOperands(); i++)
{
if(InstL->getOperand(i) != InstR->getOperand(i))
{
flag = 1;
break;
}
}
}
else {
flag = 1;
}
//::std::cout << "might be same";
if(flag != 0)
{
//Ignore gep
if(InstR->getOpcode() != 34 && InstL->getOpcode() != 34){
::std::string str1; ::llvm::raw_os_ostream errs1(::std::cerr);
::llvm::raw_string_ostream ss1(str1);
ss1 << *InstL;
errs1 << "\n\n\n\nLHS Instruction :" << ss1.str() << "\n";
::std::string str; ::llvm::raw_os_ostream errs(::std::cerr);
::llvm::raw_string_ostream ss(str);
ss << *InstR;
errs << "\n\n\n\nRHS Instruction: "<< ss.str() << "\n";
const ::llvm::DebugLoc dbgLoc3 = InstL->getDebugLoc();
const ::llvm::MDNode *Scope = dbgLoc3.getScope();
::llvm::DILocation *DIloc = dbgLoc3.get();
::llvm::DILocation *InlinedAt = DIloc->getInlinedAt();
::std::string currLFunc = DIloc->getScope()->getSubprogram()->getName();
::std::deque<::std::string> Lqueue;
Lqueue.push_front(currLFunc);
while(InlinedAt != NULL)
{
Lqueue.push_front(InlinedAt->getScope()->getSubprogram()->getName());
InlinedAt = InlinedAt->getInlinedAt();
}
errs1 << "\nLHS: Inlined ladder: ";//DIloc->getScope()->getSubprogram()->getName();
for(int i = 0; i < Lqueue.size(); i++)
{
errs1 << Lqueue.at(i) << "\t";
}
//::std::cout<<"\n\nDEBUG INFO: INST RHS";
const ::llvm::DebugLoc dbgLoc2 = InstR->getDebugLoc();
//const ::llvm::DebugLoc dbgLoc3 = InstL->getDebugLoc();
const ::llvm::MDNode *Scope2 = dbgLoc2.getScope();
::llvm::DILocation *DIloc2 = dbgLoc2.get();
//llvm_cout
::llvm::DILocation *RInlinedAt = DIloc2->getInlinedAt();
::std::deque<::std::string> Rqueue;
::std::string Rstr = DIloc2->getScope()->getSubprogram()->getName();
Rqueue.push_front(Rstr);
while(RInlinedAt != NULL)
{
Rqueue.push_front(RInlinedAt->getScope()->getSubprogram()->getName());
RInlinedAt = RInlinedAt -> getInlinedAt();
}
errs << "\nRHS: Inlined ladder: ";//<<DIloc2->getScope()->getSubprogram()->getName();
for(int i = 0; i < Rqueue.size(); i++)
{
errs << Rqueue.at(i) << "\t";
}
//dbgLoc.dump();
//dbgLoc2.print(llvm::dbgs());
// ::std::string dir = dbgLoc2.getDirectory();
// ::std::string file = dbgLoc2.getFileName();
//int line = dbgLoc2.getLine();
//int column = dbgLoc2.getCol();
//::std::cout<<"\n\ndir: "<< dir << "\nfile"<< file<<"\nline" << line << "\ncol" << column;
}
}
/* ::std::cout<<"Comparing OpName: "<<InstL->getOpcodeName()<<" and "<<InstR->getOpcodeName() << "res: "<< res << "\n";
if(res == false) {
::std::cout << "DIFFERENT";
::std::cout<<"InstL op: " << InstL->getOpcodeName()<<"InstR op: "<< InstR->getOpcodeName();
return 0;
}*/
++InstL;
++InstR;
//res = InstL->isIdenticalTo(&*InstR);
//::std::cout<< "\nOpcode: " << InstL.getOpcode() << " OpName: " << InstL.getOpcodeName();
}while(InstL != InstLE && InstR != InstRE);
}
struct config {
::std::string func = "run_";
unsigned arg = 4;
bool prob = false;
bool run_eval = false;
double eval_start = -10.0;
double eval_stop = 10.0;
double eval_step = 0.1;
::std::string eval_out = "eval_out.gp";
unsigned sim_count = 1000000;
};
int main(int argc, char **argv) {
char c = -1;
int cmpRes1 = 9999, cmpRes2 = 9999;
config conf1, conf2;
::llvm::LLVMContext context, context2;
::llvm::Function *G; ::llvm::Function *F;
while ((c = getopt_long(argc, argv, "f:g:h", options, NULL)) != -1) {
switch (c) {
case 'f': conf1.func = ::std::string(optarg); break;
case 'g': conf2.func = ::std::string(optarg); break;
default:
::std::cerr << "Unknown option: " << argv[optind - 1]
<< ::std::endl;
case 'h':
::std::cerr << "Available options:\n";
::std::cerr << "\t\t-f,--function <f> Function to examine from module1.\n";
::std::cerr << "\t\t-g, --function <g> Function to examine from module2.";
return c == 'h' ? 0 : 1;
}
}
/*if(conf1.func != conf2.func)
{
::std::cout << "Will not compare different functions for equivalence.";
return 0;
}*/
//static ::llvm::LLVMContext context, context2;
::std::deque<::std::unique_ptr<::llvm::Module>> modules, modules2;
int i = optind;
while (i < argc) {
::std::cout << "Parsing file1: " << argv[i] << "\n";
::std::cout << "Parsing file2: " << argv[i + 1] << "\n";
if(::std::string(argv[i]) == ::std::string(argv[i + 1]))
{
::std::cout << "\nEquivalent functions\n";
return 0;
}
::llvm::raw_os_ostream errs(::std::cerr);
::llvm::SMDiagnostic error;
auto ptr = ::llvm::parseIRFile(argv[i], error, context);
auto ptr2 = ::llvm::parseIRFile(argv[++i], error, context2);
if (ptr && ptr2) {
modules.push_back(::std::move(ptr));
modules2.push_back(::std::move(ptr2));
} else {
error.print(argv[i-1], errs);
error.print(argv[i],errs);
}
++i;
}
for(auto &m:modules) {
for(auto &f:m->functions())
{
if(conf1.func == f.getName()) {
F = m->getFunction(f.getName());
break;
}
//llvm_cout << "f.getName() " << f.getName() <<"\n";
}
}
for(auto &n:modules2) {
for(auto &g:n->functions())
{
if(conf2.func == g.getName()) {
G = n->getFunction(g.getName());
break;
}
//llvm_cout << "g.getName() "<< g.getName()<< "\n";
}
}
::std::cout<<"\nComparing: " << conf1.func << " " << conf2.func;
cmpRes1 = ::llvm::FunctionComparator(F, G, &GlobalNumbers).compare();
cmpRes2 = ::llvm::FunctionComparator(G, F, &GlobalNumbers).compare();
//llvm_cout << "\ncmpres1:" << cmpRes1 << "\n" << "cmpres2: " << cmpRes2;
if(cmpRes1 == 0 && cmpRes2 == 0)
{
::std::cout << "\nEquivalent functions\n";
}
::llvm::SmallVector<const ::llvm::BasicBlock*, 8> FnLBBs, FnRBBs;
// Traverse in CFG ordering. maybe improve further later
FnLBBs.push_back(&F->getEntryBlock());
FnRBBs.push_back(&G->getEntryBlock());
while(!FnLBBs.empty())
{
const ::llvm::BasicBlock *BBL = FnLBBs.pop_back_val();
const ::llvm::BasicBlock *BBR = FnRBBs.pop_back_val();
compareBB(G, F, BBL, BBR);
}
return 0;
}