File Manager

003 File Manager

Current Path: /usr/src/contrib/llvm-project/llvm/lib/Analysis

usr / src / contrib / llvm-project / llvm / lib / Analysis /

📁 ..
📄 AliasAnalysis.cpp(33.55 KB)
📄 AliasAnalysisEvaluator.cpp(15.64 KB)
📄 AliasAnalysisSummary.cpp(3.49 KB)
📄 AliasAnalysisSummary.h(10.17 KB)
📄 AliasSetTracker.cpp(25.86 KB)
📄 Analysis.cpp(5.29 KB)
📄 AssumeBundleQueries.cpp(7.96 KB)
📄 AssumptionCache.cpp(10.94 KB)
📄 BasicAliasAnalysis.cpp(85.81 KB)
📄 BlockFrequencyInfo.cpp(12.39 KB)
📄 BlockFrequencyInfoImpl.cpp(28.6 KB)
📄 BranchProbabilityInfo.cpp(43.48 KB)
📄 CFG.cpp(9.9 KB)
📄 CFGPrinter.cpp(11.2 KB)
📄 CFLAndersAliasAnalysis.cpp(33.01 KB)
📄 CFLGraph.h(21.23 KB)
📄 CFLSteensAliasAnalysis.cpp(13.24 KB)
📄 CGSCCPassManager.cpp(31.2 KB)
📄 CallGraph.cpp(12.86 KB)
📄 CallGraphSCCPass.cpp(26.31 KB)
📄 CallPrinter.cpp(9.48 KB)
📄 CaptureTracking.cpp(15.38 KB)
📄 CmpInstAnalysis.cpp(4.63 KB)
📄 CodeMetrics.cpp(6.99 KB)
📄 ConstantFolding.cpp(105.15 KB)
📄 CostModel.cpp(3.87 KB)
📄 DDG.cpp(11.29 KB)
📄 Delinearization.cpp(4.49 KB)
📄 DemandedBits.cpp(16.27 KB)
📄 DependenceAnalysis.cpp(150.78 KB)
📄 DependenceGraphBuilder.cpp(19.24 KB)
📄 DivergenceAnalysis.cpp(15.59 KB)
📄 DomPrinter.cpp(9.67 KB)
📄 DomTreeUpdater.cpp(15.21 KB)
📄 DominanceFrontier.cpp(3.2 KB)
📄 EHPersonalities.cpp(5.89 KB)
📄 GlobalsModRef.cpp(41 KB)
📄 GuardUtils.cpp(3.27 KB)
📄 HeatUtils.cpp(2.85 KB)
📄 IVDescriptors.cpp(42.28 KB)
📄 IVUsers.cpp(16.12 KB)
📄 IndirectCallPromotionAnalysis.cpp(4.33 KB)
📄 InlineAdvisor.cpp(15.28 KB)
📄 InlineCost.cpp(99.47 KB)
📄 InlineFeaturesAnalysis.cpp(1.59 KB)
📄 InlineSizeEstimatorAnalysis.cpp(10.95 KB)
📄 InstCount.cpp(2.45 KB)
📄 InstructionPrecedenceTracking.cpp(4.8 KB)
📄 InstructionSimplify.cpp(216.91 KB)
📄 Interval.cpp(1.78 KB)
📄 IntervalPartition.cpp(4.5 KB)
📄 LazyBlockFrequencyInfo.cpp(2.81 KB)
📄 LazyBranchProbabilityInfo.cpp(2.96 KB)
📄 LazyCallGraph.cpp(67.33 KB)
📄 LazyValueInfo.cpp(76.38 KB)
📄 LegacyDivergenceAnalysis.cpp(14.82 KB)
📄 Lint.cpp(29.07 KB)
📄 Loads.cpp(20.6 KB)
📄 LoopAccessAnalysis.cpp(88.02 KB)
📄 LoopAnalysisManager.cpp(6.6 KB)
📄 LoopCacheAnalysis.cpp(23.53 KB)
📄 LoopInfo.cpp(37.15 KB)
📄 LoopNestAnalysis.cpp(10.62 KB)
📄 LoopPass.cpp(12.89 KB)
📄 LoopUnrollAnalyzer.cpp(7.26 KB)
📄 MLInlineAdvisor.cpp(11.36 KB)
📄 MemDepPrinter.cpp(5.13 KB)
📄 MemDerefPrinter.cpp(2.53 KB)
📄 MemoryBuiltins.cpp(41.14 KB)
📄 MemoryDependenceAnalysis.cpp(69.89 KB)
📄 MemoryLocation.cpp(7.92 KB)
📄 MemorySSA.cpp(90.16 KB)
📄 MemorySSAUpdater.cpp(57.9 KB)
📄 ModuleDebugInfoPrinter.cpp(4.02 KB)
📄 ModuleSummaryAnalysis.cpp(38.13 KB)
📄 MustExecute.cpp(31.18 KB)
📄 ObjCARCAliasAnalysis.cpp(5.81 KB)
📄 ObjCARCAnalysisUtils.cpp(1.07 KB)
📄 ObjCARCInstKind.cpp(23.15 KB)
📄 OptimizationRemarkEmitter.cpp(4.23 KB)
📄 PHITransAddr.cpp(16.05 KB)
📄 PhiValues.cpp(8.4 KB)
📄 PostDominators.cpp(3.59 KB)
📄 ProfileSummaryInfo.cpp(18.07 KB)
📄 PtrUseVisitor.cpp(1.28 KB)
📄 RegionInfo.cpp(6.5 KB)
📄 RegionPass.cpp(9.23 KB)
📄 RegionPrinter.cpp(8.61 KB)
📄 ReleaseModeModelRunner.cpp(2.83 KB)
📄 ScalarEvolution.cpp(475.26 KB)
📄 ScalarEvolutionAliasAnalysis.cpp(5.96 KB)
📄 ScalarEvolutionDivision.cpp(7.51 KB)
📄 ScalarEvolutionNormalization.cpp(4.59 KB)
📄 ScopedNoAliasAA.cpp(7.38 KB)
📄 StackLifetime.cpp(12.22 KB)
📄 StackSafetyAnalysis.cpp(31.81 KB)
📄 StratifiedSets.h(18.67 KB)
📄 SyncDependenceAnalysis.cpp(12.97 KB)
📄 SyntheticCountsUtils.cpp(3.81 KB)
📄 TFUtils.cpp(8.99 KB)
📄 TargetLibraryInfo.cpp(58.98 KB)
📄 TargetTransformInfo.cpp(48.15 KB)
📄 Trace.cpp(1.8 KB)
📄 TypeBasedAliasAnalysis.cpp(26.04 KB)
📄 TypeMetadataUtils.cpp(5.93 KB)
📄 VFABIDemangling.cpp(16.46 KB)
📄 ValueLattice.cpp(1.19 KB)
📄 ValueLatticeUtils.cpp(1.53 KB)
📄 ValueTracking.cpp(243.08 KB)
📄 VectorUtils.cpp(48.57 KB)
📁 models

Editing: SyntheticCountsUtils.cpp

//===--- SyntheticCountsUtils.cpp - synthetic counts propagation utils ---===//
//
// 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 defines utilities for propagating synthetic counts.
//
//===----------------------------------------------------------------------===//

#include "llvm/Analysis/SyntheticCountsUtils.h"
#include "llvm/ADT/DenseSet.h"
#include "llvm/ADT/SCCIterator.h"
#include "llvm/Analysis/CallGraph.h"
#include "llvm/IR/Function.h"
#include "llvm/IR/InstIterator.h"
#include "llvm/IR/Instructions.h"
#include "llvm/IR/ModuleSummaryIndex.h"

using namespace llvm;

// Given an SCC, propagate entry counts along the edge of the SCC nodes.
template <typename CallGraphType>
void SyntheticCountsUtils<CallGraphType>::propagateFromSCC(
    const SccTy &SCC, GetProfCountTy GetProfCount, AddCountTy AddCount) {

DenseSet<NodeRef> SCCNodes;
  SmallVector<std::pair<NodeRef, EdgeRef>, 8> SCCEdges, NonSCCEdges;

for (auto &Node : SCC)
    SCCNodes.insert(Node);

// Partition the edges coming out of the SCC into those whose destination is
  // in the SCC and the rest.
  for (const auto &Node : SCCNodes) {
    for (auto &E : children_edges<CallGraphType>(Node)) {
      if (SCCNodes.count(CGT::edge_dest(E)))
        SCCEdges.emplace_back(Node, E);
      else
        NonSCCEdges.emplace_back(Node, E);
    }
  }

// For nodes in the same SCC, update the counts in two steps:
  // 1. Compute the additional count for each node by propagating the counts
  // along all incoming edges to the node that originate from within the same
  // SCC and summing them up.
  // 2. Add the additional counts to the nodes in the SCC.
  // This ensures that the order of
  // traversal of nodes within the SCC doesn't affect the final result.

DenseMap<NodeRef, Scaled64> AdditionalCounts;
  for (auto &E : SCCEdges) {
    auto OptProfCount = GetProfCount(E.first, E.second);
    if (!OptProfCount)
      continue;
    auto Callee = CGT::edge_dest(E.second);
    AdditionalCounts[Callee] += OptProfCount.getValue();
  }

// Update the counts for the nodes in the SCC.
  for (auto &Entry : AdditionalCounts)
    AddCount(Entry.first, Entry.second);

// Now update the counts for nodes outside the SCC.
  for (auto &E : NonSCCEdges) {
    auto OptProfCount = GetProfCount(E.first, E.second);
    if (!OptProfCount)
      continue;
    auto Callee = CGT::edge_dest(E.second);
    AddCount(Callee, OptProfCount.getValue());
  }
}

/// Propgate synthetic entry counts on a callgraph \p CG.
///
/// This performs a reverse post-order traversal of the callgraph SCC. For each
/// SCC, it first propagates the entry counts to the nodes within the SCC
/// through call edges and updates them in one shot. Then the entry counts are
/// propagated to nodes outside the SCC. This requires \p GraphTraits
/// to have a specialization for \p CallGraphType.

template <typename CallGraphType>
void SyntheticCountsUtils<CallGraphType>::propagate(const CallGraphType &CG,
                                                    GetProfCountTy GetProfCount,
                                                    AddCountTy AddCount) {
  std::vector<SccTy> SCCs;

// Collect all the SCCs.
  for (auto I = scc_begin(CG); !I.isAtEnd(); ++I)
    SCCs.push_back(*I);

// The callgraph-scc needs to be visited in top-down order for propagation.
  // The scc iterator returns the scc in bottom-up order, so reverse the SCCs
  // and call propagateFromSCC.
  for (auto &SCC : reverse(SCCs))
    propagateFromSCC(SCC, GetProfCount, AddCount);
}

template class llvm::SyntheticCountsUtils<const CallGraph *>;
template class llvm::SyntheticCountsUtils<ModuleSummaryIndex *>;

003 File Manager

Editing: SyntheticCountsUtils.cpp

Upload File

Create Folder