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📁 ..
📄 ABIInfo.h(5.01 KB)
📄 Address.h(3.28 KB)
📄 BackendUtil.cpp(67.92 KB)
📄 CGAtomic.cpp(85.95 KB)
📄 CGBlocks.cpp(111.14 KB)
📄 CGBlocks.h(8.94 KB)
📄 CGBuilder.h(13.78 KB)
📄 CGBuiltin.cpp(695.8 KB)
📄 CGCUDANV.cpp(35.16 KB)
📄 CGCUDARuntime.cpp(1.53 KB)
📄 CGCUDARuntime.h(3.4 KB)
📄 CGCXX.cpp(11.8 KB)
📄 CGCXXABI.cpp(12.47 KB)
📄 CGCXXABI.h(27.9 KB)
📄 CGCall.cpp(197.3 KB)
📄 CGCall.h(11.62 KB)
📄 CGClass.cpp(113.54 KB)
📄 CGCleanup.cpp(46.97 KB)
📄 CGCleanup.h(19.28 KB)
📄 CGCoroutine.cpp(27.82 KB)
📄 CGDebugInfo.cpp(191.42 KB)
📄 CGDebugInfo.h(34.73 KB)
📄 CGDecl.cpp(97.98 KB)
📄 CGDeclCXX.cpp(34.73 KB)
📄 CGException.cpp(80.38 KB)
📄 CGExpr.cpp(209.78 KB)
📄 CGExprAgg.cpp(77.04 KB)
📄 CGExprCXX.cpp(90.39 KB)
📄 CGExprComplex.cpp(44.9 KB)
📄 CGExprConstant.cpp(86.17 KB)
📄 CGExprScalar.cpp(196.29 KB)
📄 CGGPUBuiltin.cpp(6.17 KB)
📄 CGLoopInfo.cpp(29.17 KB)
📄 CGLoopInfo.h(10.5 KB)
📄 CGNonTrivialStruct.cpp(41.4 KB)
📄 CGObjC.cpp(142.79 KB)
📄 CGObjCGNU.cpp(168.38 KB)
📄 CGObjCMac.cpp(304.84 KB)
📄 CGObjCRuntime.cpp(14.68 KB)
📄 CGObjCRuntime.h(14.81 KB)
📄 CGOpenCLRuntime.cpp(7.08 KB)
📄 CGOpenCLRuntime.h(3.44 KB)
📄 CGOpenMPRuntime.cpp(501.86 KB)
📄 CGOpenMPRuntime.h(111.87 KB)
📄 CGOpenMPRuntimeNVPTX.cpp(215.42 KB)
📄 CGOpenMPRuntimeNVPTX.h(22.59 KB)
📄 CGRecordLayout.h(7.84 KB)
📄 CGRecordLayoutBuilder.cpp(38.24 KB)
📄 CGStmt.cpp(92.92 KB)
📄 CGStmtOpenMP.cpp(278.04 KB)
📄 CGVTT.cpp(6.81 KB)
📄 CGVTables.cpp(55.02 KB)
📄 CGVTables.h(6.38 KB)
📄 CGValue.h(21.24 KB)
📄 CodeGenABITypes.cpp(5 KB)
📄 CodeGenAction.cpp(46.2 KB)
📄 CodeGenFunction.cpp(95.34 KB)
📄 CodeGenFunction.h(200.94 KB)
📄 CodeGenModule.cpp(228.13 KB)
📄 CodeGenModule.h(60.91 KB)
📄 CodeGenPGO.cpp(36.17 KB)
📄 CodeGenPGO.h(4.36 KB)
📄 CodeGenTBAA.cpp(16.92 KB)
📄 CodeGenTBAA.h(9.19 KB)
📄 CodeGenTypeCache.h(3.28 KB)
📄 CodeGenTypes.cpp(32.35 KB)
📄 CodeGenTypes.h(13.42 KB)
📄 ConstantEmitter.h(6.65 KB)
📄 ConstantInitBuilder.cpp(10.29 KB)
📄 CoverageMappingGen.cpp(54.64 KB)
📄 CoverageMappingGen.h(4.04 KB)
📄 EHScopeStack.h(14.38 KB)
📄 ItaniumCXXABI.cpp(176.66 KB)
📄 MacroPPCallbacks.cpp(6.41 KB)
📄 MacroPPCallbacks.h(4.54 KB)
📄 MicrosoftCXXABI.cpp(175.41 KB)
📄 ModuleBuilder.cpp(11.79 KB)
📄 ObjectFilePCHContainerOperations.cpp(12.93 KB)
📄 PatternInit.cpp(4.1 KB)
📄 PatternInit.h(722 B)
📄 SanitizerMetadata.cpp(4.21 KB)
📄 SanitizerMetadata.h(1.63 KB)
📄 SwiftCallingConv.cpp(29.76 KB)
📄 TargetInfo.cpp(403.11 KB)
📄 TargetInfo.h(15.43 KB)
📄 VarBypassDetector.cpp(5.1 KB)
📄 VarBypassDetector.h(2.29 KB)

Editing: CodeGenPGO.h

//===--- CodeGenPGO.h - PGO Instrumentation for LLVM CodeGen ----*- 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
//
//===----------------------------------------------------------------------===//
//
// Instrumentation-based profile-guided optimization
//
//===----------------------------------------------------------------------===//

#ifndef LLVM_CLANG_LIB_CODEGEN_CODEGENPGO_H
#define LLVM_CLANG_LIB_CODEGEN_CODEGENPGO_H

#include "CGBuilder.h"
#include "CodeGenModule.h"
#include "CodeGenTypes.h"
#include "llvm/ProfileData/InstrProfReader.h"
#include <array>
#include <memory>

namespace clang {
namespace CodeGen {

/// Per-function PGO state.
class CodeGenPGO {
private:
  CodeGenModule &CGM;
  std::string FuncName;
  llvm::GlobalVariable *FuncNameVar;

std::array <unsigned, llvm::IPVK_Last + 1> NumValueSites;
  unsigned NumRegionCounters;
  uint64_t FunctionHash;
  std::unique_ptr<llvm::DenseMap<const Stmt *, unsigned>> RegionCounterMap;
  std::unique_ptr<llvm::DenseMap<const Stmt *, uint64_t>> StmtCountMap;
  std::unique_ptr<llvm::InstrProfRecord> ProfRecord;
  std::vector<uint64_t> RegionCounts;
  uint64_t CurrentRegionCount;

public:
  CodeGenPGO(CodeGenModule &CGModule)
      : CGM(CGModule), FuncNameVar(nullptr), NumValueSites({{0}}),
        NumRegionCounters(0), FunctionHash(0), CurrentRegionCount(0) {}

/// Whether or not we have PGO region data for the current function. This is
  /// false both when we have no data at all and when our data has been
  /// discarded.
  bool haveRegionCounts() const { return !RegionCounts.empty(); }

/// Return the counter value of the current region.
  uint64_t getCurrentRegionCount() const { return CurrentRegionCount; }

/// Set the counter value for the current region. This is used to keep track
  /// of changes to the most recent counter from control flow and non-local
  /// exits.
  void setCurrentRegionCount(uint64_t Count) { CurrentRegionCount = Count; }

/// Check if an execution count is known for a given statement. If so, return
  /// true and put the value in Count; else return false.
  Optional<uint64_t> getStmtCount(const Stmt *S) {
    if (!StmtCountMap)
      return None;
    auto I = StmtCountMap->find(S);
    if (I == StmtCountMap->end())
      return None;
    return I->second;
  }

/// If the execution count for the current statement is known, record that
  /// as the current count.
  void setCurrentStmt(const Stmt *S) {
    if (auto Count = getStmtCount(S))
      setCurrentRegionCount(*Count);
  }

/// Assign counters to regions and configure them for PGO of a given
  /// function. Does nothing if instrumentation is not enabled and either
  /// generates global variables or associates PGO data with each of the
  /// counters depending on whether we are generating or using instrumentation.
  void assignRegionCounters(GlobalDecl GD, llvm::Function *Fn);
  /// Emit a coverage mapping range with a counter zero
  /// for an unused declaration.
  void emitEmptyCounterMapping(const Decl *D, StringRef FuncName,
                               llvm::GlobalValue::LinkageTypes Linkage);
  // Insert instrumentation or attach profile metadata at value sites
  void valueProfile(CGBuilderTy &Builder, uint32_t ValueKind,
                    llvm::Instruction *ValueSite, llvm::Value *ValuePtr);
private:
  void setFuncName(llvm::Function *Fn);
  void setFuncName(StringRef Name, llvm::GlobalValue::LinkageTypes Linkage);
  void mapRegionCounters(const Decl *D);
  void computeRegionCounts(const Decl *D);
  void applyFunctionAttributes(llvm::IndexedInstrProfReader *PGOReader,
                               llvm::Function *Fn);
  void loadRegionCounts(llvm::IndexedInstrProfReader *PGOReader,
                        bool IsInMainFile);
  bool skipRegionMappingForDecl(const Decl *D);
  void emitCounterRegionMapping(const Decl *D);

public:
  void emitCounterIncrement(CGBuilderTy &Builder, const Stmt *S,
                            llvm::Value *StepV);

/// Return the region count for the counter at the given index.
  uint64_t getRegionCount(const Stmt *S) {
    if (!RegionCounterMap)
      return 0;
    if (!haveRegionCounts())
      return 0;
    return RegionCounts[(*RegionCounterMap)[S]];
  }
};

}  // end namespace CodeGen
}  // end namespace clang

#endif

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Editing: CodeGenPGO.h

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