llvm/llvm/lib/Analysis/LazyBlockFrequencyInfo.cpp

//===- LazyBlockFrequencyInfo.cpp - Lazy Block Frequency Analysis ---------===//
//
// 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 is an alternative analysis pass to BlockFrequencyInfoWrapperPass.  The
// difference is that with this pass the block frequencies are not computed when
// the analysis pass is executed but rather when the BFI result is explicitly
// requested by the analysis client.
//
//===----------------------------------------------------------------------===//

#include "llvm/Analysis/LazyBlockFrequencyInfo.h"
#include "llvm/Analysis/LazyBranchProbabilityInfo.h"
#include "llvm/Analysis/LoopInfo.h"
#include "llvm/IR/Dominators.h"
#include "llvm/InitializePasses.h"

usingnamespacellvm;

#define DEBUG_TYPE …

INITIALIZE_PASS_BEGIN(LazyBlockFrequencyInfoPass, DEBUG_TYPE,
                      "Lazy Block Frequency Analysis", true, true)
INITIALIZE_PASS_DEPENDENCY(LazyBPIPass)
INITIALIZE_PASS_DEPENDENCY(LoopInfoWrapperPass)
INITIALIZE_PASS_END(LazyBlockFrequencyInfoPass, DEBUG_TYPE,
                    "Lazy Block Frequency Analysis", true, true)

char LazyBlockFrequencyInfoPass::ID = …;

LazyBlockFrequencyInfoPass::LazyBlockFrequencyInfoPass() : … { … }

void LazyBlockFrequencyInfoPass::print(raw_ostream &OS, const Module *) const { … }

void LazyBlockFrequencyInfoPass::getAnalysisUsage(AnalysisUsage &AU) const { … }

void LazyBlockFrequencyInfoPass::releaseMemory() { … }

bool LazyBlockFrequencyInfoPass::runOnFunction(Function &F) { … }

void LazyBlockFrequencyInfoPass::getLazyBFIAnalysisUsage(AnalysisUsage &AU) { … }

void llvm::initializeLazyBFIPassPass(PassRegistry &Registry) { … }