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📄 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)
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Editing: IntervalPartition.cpp

//===- IntervalPartition.cpp - Interval Partition module code -------------===//
//
// 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 contains the definition of the IntervalPartition class, which
// calculates and represent the interval partition of a function.
//
//===----------------------------------------------------------------------===//

#include "llvm/Analysis/IntervalPartition.h"
#include "llvm/Analysis/Interval.h"
#include "llvm/Analysis/IntervalIterator.h"
#include "llvm/InitializePasses.h"
#include "llvm/Pass.h"
#include <cassert>
#include <utility>

using namespace llvm;

char IntervalPartition::ID = 0;

IntervalPartition::IntervalPartition() : FunctionPass(ID) {
  initializeIntervalPartitionPass(*PassRegistry::getPassRegistry());
}

INITIALIZE_PASS(IntervalPartition, "intervals",
                "Interval Partition Construction", true, true)

//===----------------------------------------------------------------------===//
// IntervalPartition Implementation
//===----------------------------------------------------------------------===//

// releaseMemory - Reset state back to before function was analyzed
void IntervalPartition::releaseMemory() {
  for (unsigned i = 0, e = Intervals.size(); i != e; ++i)
    delete Intervals[i];
  IntervalMap.clear();
  Intervals.clear();
  RootInterval = nullptr;
}

void IntervalPartition::print(raw_ostream &O, const Module*) const {
  for(unsigned i = 0, e = Intervals.size(); i != e; ++i)
    Intervals[i]->print(O);
}

// addIntervalToPartition - Add an interval to the internal list of intervals,
// and then add mappings from all of the basic blocks in the interval to the
// interval itself (in the IntervalMap).
void IntervalPartition::addIntervalToPartition(Interval *I) {
  Intervals.push_back(I);

// Add mappings for all of the basic blocks in I to the IntervalPartition
  for (Interval::node_iterator It = I->Nodes.begin(), End = I->Nodes.end();
       It != End; ++It)
    IntervalMap.insert(std::make_pair(*It, I));
}

// updatePredecessors - Interval generation only sets the successor fields of
// the interval data structures.  After interval generation is complete,
// run through all of the intervals and propagate successor info as
// predecessor info.
void IntervalPartition::updatePredecessors(Interval *Int) {
  BasicBlock *Header = Int->getHeaderNode();
  for (BasicBlock *Successor : Int->Successors)
    getBlockInterval(Successor)->Predecessors.push_back(Header);
}

// IntervalPartition ctor - Build the first level interval partition for the
// specified function...
bool IntervalPartition::runOnFunction(Function &F) {
  // Pass false to intervals_begin because we take ownership of it's memory
  function_interval_iterator I = intervals_begin(&F, false);
  assert(I != intervals_end(&F) && "No intervals in function!?!?!");

addIntervalToPartition(RootInterval = *I);

++I;  // After the first one...

// Add the rest of the intervals to the partition.
  for (function_interval_iterator E = intervals_end(&F); I != E; ++I)
    addIntervalToPartition(*I);

// Now that we know all of the successor information, propagate this to the
  // predecessors for each block.
  for (unsigned i = 0, e = Intervals.size(); i != e; ++i)
    updatePredecessors(Intervals[i]);
  return false;
}

// IntervalPartition ctor - Build a reduced interval partition from an
// existing interval graph.  This takes an additional boolean parameter to
// distinguish it from a copy constructor.  Always pass in false for now.
IntervalPartition::IntervalPartition(IntervalPartition &IP, bool)
  : FunctionPass(ID) {
  assert(IP.getRootInterval() && "Cannot operate on empty IntervalPartitions!");

// Pass false to intervals_begin because we take ownership of it's memory
  interval_part_interval_iterator I = intervals_begin(IP, false);
  assert(I != intervals_end(IP) && "No intervals in interval partition!?!?!");

addIntervalToPartition(RootInterval = *I);

++I;  // After the first one...

// Add the rest of the intervals to the partition.
  for (interval_part_interval_iterator E = intervals_end(IP); I != E; ++I)
    addIntervalToPartition(*I);

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