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//===-- CallPathManager.cpp -----------------------------------------------===//
//
// The KLEE Symbolic Virtual Machine
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
#include "CallPathManager.h"
#include "klee/Statistics/Statistics.h"
#include "llvm/IR/Function.h"
#include "llvm/Support/raw_ostream.h"
#include <map>
#include <vector>
using namespace klee;
///
CallPathNode::CallPathNode(CallPathNode *_parent,
const llvm::Instruction *_callSite,
const llvm::Function *_function)
: parent(_parent), callSite(_callSite), function(_function), count(0) {}
void CallPathNode::print() {
llvm::errs() << " (Function: " << this->function->getName() << ", "
<< "Callsite: " << callSite << ", "
<< "Count: " << this->count << ")";
if (parent && parent->callSite) {
llvm::errs() << ";\n";
parent->print();
}
else llvm::errs() << "\n";
}
///
CallPathManager::CallPathManager() : root(nullptr, nullptr, nullptr) {}
void CallPathManager::getSummaryStatistics(CallSiteSummaryTable &results) {
results.clear();
for (auto &path : paths)
path->summaryStatistics = path->statistics;
// compute summary bottom up, while building result table
for (auto it = paths.rbegin(), ie = paths.rend(); it != ie; ++it) {
const auto &cp = (*it);
cp->parent->summaryStatistics += cp->summaryStatistics;
CallSiteInfo &csi = results[cp->callSite][cp->function];
csi.count += cp->count;
csi.statistics += cp->summaryStatistics;
}
}
CallPathNode *CallPathManager::computeCallPath(CallPathNode *parent,
const llvm::Instruction *cs,
const llvm::Function *f) {
for (CallPathNode *p=parent; p; p=p->parent)
if (cs==p->callSite && f==p->function)
return p;
auto cp = std::unique_ptr<CallPathNode>(new CallPathNode(parent, cs, f));
auto newCP = cp.get();
paths.emplace_back(std::move(cp));
return newCP;
}
CallPathNode *CallPathManager::getCallPath(CallPathNode *parent,
const llvm::Instruction *cs,
const llvm::Function *f) {
std::pair<const llvm::Instruction *, const llvm::Function *> key(cs, f);
if (!parent)
parent = &root;
auto it = parent->children.find(key);
if (it==parent->children.end()) {
auto cp = computeCallPath(parent, cs, f);
parent->children.insert(std::make_pair(key, cp));
return cp;
} else {
return it->second;
}
}
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