llvm/bolt/lib/Passes/ContinuityStats.cpp

//===- bolt/Passes/ContinuityStats.cpp --------------------------*- C++ -*-===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
//
// This file implements the continuity stats calculation pass.
//
//===----------------------------------------------------------------------===//

#include "bolt/Passes/ContinuityStats.h"
#include "bolt/Core/BinaryBasicBlock.h"
#include "bolt/Core/BinaryFunction.h"
#include "bolt/Utils/CommandLineOpts.h"
#include "llvm/Support/CommandLine.h"
#include <queue>
#include <unordered_map>
#include <unordered_set>

#define DEBUG_TYPE …

usingnamespacellvm;
usingnamespacebolt;

namespace opts {
extern cl::opt<unsigned> Verbosity;
cl::opt<unsigned> NumFunctionsForContinuityCheck(
    "num-functions-for-continuity-check",
    cl::desc("number of hottest functions to print aggregated "
             "CFG discontinuity stats of."),
    cl::init(1000), cl::ZeroOrMore, cl::Hidden, cl::cat(BoltOptCategory));
} // namespace opts

namespace {
FunctionListType;
function_iterator;

template <typename T>
void printDistribution(raw_ostream &OS, std::vector<T> &values,
                       bool Fraction = false) { … }

void printCFGContinuityStats(raw_ostream &OS,
                             iterator_range<function_iterator> &Functions) { … }

void printAll(BinaryContext &BC, FunctionListType &ValidFunctions,
              size_t NumTopFunctions) { … }
} // namespace

bool PrintContinuityStats::shouldOptimize(const BinaryFunction &BF) const { … }

Error PrintContinuityStats::runOnFunctions(BinaryContext &BC) { … }