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📄 ASanStackFrameLayout.h(3.51 KB)
📄 AddDiscriminators.h(1.04 KB)
📄 AssumeBundleBuilder.h(2.29 KB)
📄 BasicBlockUtils.h(20.81 KB)
📄 BreakCriticalEdges.h(1.16 KB)
📄 BuildLibCalls.h(9.67 KB)
📄 BypassSlowDivision.h(2.55 KB)
📄 CallGraphUpdater.h(3.84 KB)
📄 CallPromotionUtils.h(3.41 KB)
📄 CanonicalizeAliases.h(998 B)
📄 CanonicalizeFreezeInLoops.h(1.15 KB)
📄 Cloning.h(12.34 KB)
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📄 CtorUtils.h(1021 B)
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📄 EntryExitInstrumenter.h(1.16 KB)
📄 EscapeEnumerator.h(1.56 KB)
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📄 FunctionImportUtils.h(5.73 KB)
📄 GlobalStatus.h(2.97 KB)
📄 GuardUtils.h(1.92 KB)
📄 ImportedFunctionsInliningStatistics.h(4.35 KB)
📄 InjectTLIMappings.h(1.27 KB)
📄 IntegerDivision.h(2.88 KB)
📄 LCSSA.h(1.56 KB)
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📄 Local.h(24.77 KB)
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📄 NameAnonGlobals.h(1.03 KB)
📄 PredicateInfo.h(7.76 KB)
📄 PromoteMemToReg.h(1.57 KB)
📄 SSAUpdater.h(6.12 KB)
📄 SSAUpdaterBulk.h(3.18 KB)
📄 SSAUpdaterImpl.h(15.75 KB)
📄 SanitizerStats.h(1.53 KB)
📄 ScalarEvolutionExpander.h(17.87 KB)
📄 SimplifyIndVar.h(2.12 KB)
📄 SimplifyLibCalls.h(10.85 KB)
📄 SizeOpts.h(4.84 KB)
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📄 UnifyFunctionExitNodes.h(1.83 KB)
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📄 UnrollLoop.h(6.05 KB)
📄 VNCoercion.h(4.99 KB)
📄 ValueMapper.h(11.67 KB)

Editing: CallGraphUpdater.h

//===- CallGraphUpdater.h - A (lazy) call graph update helper ---*- 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
//
//===----------------------------------------------------------------------===//
/// \file
///
/// This file provides interfaces used to manipulate a call graph, regardless
/// if it is a "old style" CallGraph or an "new style" LazyCallGraph.
///
//===----------------------------------------------------------------------===//

#ifndef LLVM_TRANSFORMS_UTILS_CALLGRAPHUPDATER_H
#define LLVM_TRANSFORMS_UTILS_CALLGRAPHUPDATER_H

#include "llvm/Analysis/CGSCCPassManager.h"
#include "llvm/Analysis/CallGraph.h"
#include "llvm/Analysis/CallGraphSCCPass.h"
#include "llvm/Analysis/LazyCallGraph.h"

namespace llvm {

/// Wrapper to unify "old style" CallGraph and "new style" LazyCallGraph. This
/// simplifies the interface and the call sites, e.g., new and old pass manager
/// passes can share the same code.
class CallGraphUpdater {
  /// Containers for functions which we did replace or want to delete when
  /// `finalize` is called. This can happen explicitly or as part of the
  /// destructor. Dead functions in comdat sections are tracked separately
  /// because a function with discardable linakage in a COMDAT should only
  /// be dropped if the entire COMDAT is dropped, see git ac07703842cf.
  ///{
  SmallPtrSet<Function *, 16> ReplacedFunctions;
  SmallVector<Function *, 16> DeadFunctions;
  SmallVector<Function *, 16> DeadFunctionsInComdats;
  ///}

/// Old PM variables
  ///{
  CallGraph *CG = nullptr;
  CallGraphSCC *CGSCC = nullptr;
  ///}

/// New PM variables
  ///{
  LazyCallGraph *LCG = nullptr;
  LazyCallGraph::SCC *SCC = nullptr;
  CGSCCAnalysisManager *AM = nullptr;
  CGSCCUpdateResult *UR = nullptr;
  FunctionAnalysisManager *FAM = nullptr;
  ///}

public:
  CallGraphUpdater() {}
  ~CallGraphUpdater() { finalize(); }

/// Initializers for usage outside of a CGSCC pass, inside a CGSCC pass in
  /// the old and new pass manager (PM).
  ///{
  void initialize(CallGraph &CG, CallGraphSCC &SCC) {
    this->CG = &CG;
    this->CGSCC = &SCC;
  }
  void initialize(LazyCallGraph &LCG, LazyCallGraph::SCC &SCC,
                  CGSCCAnalysisManager &AM, CGSCCUpdateResult &UR) {
    this->LCG = &LCG;
    this->SCC = &SCC;
    this->AM = &AM;
    this->UR = &UR;
    FAM =
        &AM.getResult<FunctionAnalysisManagerCGSCCProxy>(SCC, LCG).getManager();
  }
  ///}

/// Finalizer that will trigger actions like function removal from the CG.
  bool finalize();

/// Remove \p Fn from the call graph.
  void removeFunction(Function &Fn);

/// After an CGSCC pass changes a function in ways that affect the call
  /// graph, this method can be called to update it.
  void reanalyzeFunction(Function &Fn);

/// If a new function was created by outlining, this method can be called
  /// to update the call graph for the new function. Note that the old one
  /// still needs to be re-analyzed or manually updated.
  void registerOutlinedFunction(Function &NewFn);

/// Replace \p OldFn in the call graph (and SCC) with \p NewFn. The uses
  /// outside the call graph and the function \p OldFn are not modified.
  /// Note that \p OldFn is also removed from the call graph
  /// (\see removeFunction).
  void replaceFunctionWith(Function &OldFn, Function &NewFn);

/// Remove the call site \p CS from the call graph.
  void removeCallSite(CallBase &CS);

/// Replace \p OldCS with the new call site \p NewCS.
  /// \return True if the replacement was successful, otherwise False. In the
  /// latter case the parent function of \p OldCB needs to be re-analyzed.
  bool replaceCallSite(CallBase &OldCS, CallBase &NewCS);
};

} // end namespace llvm

#endif // LLVM_TRANSFORMS_UTILS_CALLGRAPHUPDATER_H

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