LLVM  13.0.0git
Macros | Enumerations | Functions | Variables
LTOBackend.cpp File Reference
#include "llvm/LTO/LTOBackend.h"
#include "llvm/Analysis/AliasAnalysis.h"
#include "llvm/Analysis/CGSCCPassManager.h"
#include "llvm/Analysis/ModuleSummaryAnalysis.h"
#include "llvm/Analysis/TargetLibraryInfo.h"
#include "llvm/Analysis/TargetTransformInfo.h"
#include "llvm/Bitcode/BitcodeReader.h"
#include "llvm/Bitcode/BitcodeWriter.h"
#include "llvm/IR/LLVMRemarkStreamer.h"
#include "llvm/IR/LegacyPassManager.h"
#include "llvm/IR/PassManager.h"
#include "llvm/IR/Verifier.h"
#include "llvm/LTO/LTO.h"
#include "llvm/MC/SubtargetFeature.h"
#include "llvm/Object/ModuleSymbolTable.h"
#include "llvm/Passes/PassBuilder.h"
#include "llvm/Passes/PassPlugin.h"
#include "llvm/Passes/StandardInstrumentations.h"
#include "llvm/Support/Error.h"
#include "llvm/Support/FileSystem.h"
#include "llvm/Support/MemoryBuffer.h"
#include "llvm/Support/Path.h"
#include "llvm/Support/Program.h"
#include "llvm/Support/SmallVectorMemoryBuffer.h"
#include "llvm/Support/TargetRegistry.h"
#include "llvm/Support/ThreadPool.h"
#include "llvm/Support/raw_ostream.h"
#include "llvm/Target/TargetMachine.h"
#include "llvm/Transforms/IPO.h"
#include "llvm/Transforms/IPO/PassManagerBuilder.h"
#include "llvm/Transforms/Scalar/LoopPassManager.h"
#include "llvm/Transforms/Utils/FunctionImportUtils.h"
#include "llvm/Transforms/Utils/SplitModule.h"
#include "llvm/Support/Extension.def"
Include dependency graph for LTOBackend.cpp:

Go to the source code of this file.

Macros

#define DEBUG_TYPE   "lto-backend"
 
#define HANDLE_EXTENSION(Ext)   llvm::PassPluginLibraryInfo get##Ext##PluginInfo();
 
#define HANDLE_EXTENSION(Ext)   get##Ext##PluginInfo().RegisterPassBuilderCallbacks(PB);
 

Enumerations

enum  LTOBitcodeEmbedding { LTOBitcodeEmbedding::DoNotEmbed = 0, LTOBitcodeEmbedding::EmbedOptimized = 1, LTOBitcodeEmbedding::EmbedPostMergePreOptimized = 2 }
 

Functions

static LLVM_ATTRIBUTE_NORETURN void reportOpenError (StringRef Path, Twine Msg)
 
static void RegisterPassPlugins (ArrayRef< std::string > PassPlugins, PassBuilder &PB)
 
static std::unique_ptr< TargetMachine > createTargetMachine (const Config &Conf, const Target *TheTarget, Module &M)
 
static void runNewPMPasses (const Config &Conf, Module &Mod, TargetMachine *TM, unsigned OptLevel, bool IsThinLTO, ModuleSummaryIndex *ExportSummary, const ModuleSummaryIndex *ImportSummary)
 
static void runOldPMPasses (const Config &Conf, Module &Mod, TargetMachine *TM, bool IsThinLTO, ModuleSummaryIndex *ExportSummary, const ModuleSummaryIndex *ImportSummary)
 
static void codegen (const Config &Conf, TargetMachine *TM, AddStreamFn AddStream, unsigned Task, Module &Mod, const ModuleSummaryIndex &CombinedIndex)
 
static void splitCodeGen (const Config &C, TargetMachine *TM, AddStreamFn AddStream, unsigned ParallelCodeGenParallelismLevel, Module &Mod, const ModuleSummaryIndex &CombinedIndex)
 
static Expected< const Target * > initAndLookupTarget (const Config &C, Module &Mod)
 
static void dropDeadSymbols (Module &Mod, const GVSummaryMapTy &DefinedGlobals, const ModuleSummaryIndex &Index)
 

Variables

static cl::opt< LTOBitcodeEmbedding > EmbedBitcode ("lto-embed-bitcode", cl::init(LTOBitcodeEmbedding::DoNotEmbed), cl::values(clEnumValN(LTOBitcodeEmbedding::DoNotEmbed, "none", "Do not embed"), clEnumValN(LTOBitcodeEmbedding::EmbedOptimized, "optimized", "Embed after all optimization passes"), clEnumValN(LTOBitcodeEmbedding::EmbedPostMergePreOptimized, "post-merge-pre-opt", "Embed post merge, but before optimizations")), cl::desc("Embed LLVM bitcode in object files produced by LTO"))
 
static cl::opt< bool > ThinLTOAssumeMerged ("thinlto-assume-merged", cl::init(false), cl::desc("Assume the input has already undergone ThinLTO function " "importing and the other pre-optimization pipeline changes."))
 

Macro Definition Documentation

◆ DEBUG_TYPE

#define DEBUG_TYPE   "lto-backend"

Definition at line 53 of file LTOBackend.cpp.

◆ HANDLE_EXTENSION [1/2]

#define HANDLE_EXTENSION (   Ext)    llvm::PassPluginLibraryInfo get##Ext##PluginInfo();

Definition at line 157 of file LTOBackend.cpp.

◆ HANDLE_EXTENSION [2/2]

#define HANDLE_EXTENSION (   Ext)    get##Ext##PluginInfo().RegisterPassBuilderCallbacks(PB);

Definition at line 157 of file LTOBackend.cpp.

Enumeration Type Documentation

◆ LTOBitcodeEmbedding

enum LTOBitcodeEmbedding
strong
Enumerator
DoNotEmbed 
EmbedOptimized 
EmbedPostMergePreOptimized 

Definition at line 55 of file LTOBackend.cpp.

Function Documentation

◆ codegen()

static void codegen ( const Config &  Conf,
TargetMachine *  TM,
AddStreamFn  AddStream,
unsigned  Task,
Module &  Mod,
const ModuleSummaryIndex &  CombinedIndex 
)
static

Definition at line 368 of file LTOBackend.cpp.

References llvm::legacy::PassManager::add(), llvm::sys::path::append(), llvm::lto::Config::CGFileType, llvm::sys::fs::create_directories(), llvm::createImmutableModuleSummaryIndexWrapperPass(), llvm::lto::Config::DwoDir, EmbedBitcode, llvm::EmbedBitcodeInModule(), EmbedOptimized, llvm::Mod, llvm::sys::fs::OF_None, llvm::lto::Config::PreCodeGenModuleHook, llvm::lto::Config::PreCodeGenPassesHook, llvm::report_fatal_error(), llvm::legacy::PassManager::run(), llvm::lto::Config::SplitDwarfFile, llvm::lto::Config::SplitDwarfOutput, llvm::SystemZISD::TM, and llvm::to_string().

Referenced by llvm::lto::backend(), splitCodeGen(), and llvm::lto::thinBackend().

◆ createTargetMachine()

static std::unique_ptr<TargetMachine> createTargetMachine ( const Config &  Conf,
const Target *  TheTarget,
Module &  M 
)
static

Definition at line 181 of file LTOBackend.cpp.

References llvm::SubtargetFeatures::AddFeature(), assert(), llvm::lto::Config::CGOptLevel, llvm::lto::Config::CodeModel, llvm::lto::Config::CPU, llvm::Target::createTargetMachine(), llvm::SubtargetFeatures::getDefaultSubtargetFeatures(), llvm::SubtargetFeatures::getString(), M, llvm::lto::Config::MAttrs, llvm::None, llvm::PICLevel::NotPIC, llvm::lto::Config::Options, llvm::Reloc::PIC_, llvm::lto::Config::RelocModel, llvm::Reloc::Static, and llvm::SystemZISD::TM.

Referenced by llvm::lto::backend(), LLVMCreateTargetMachine(), splitCodeGen(), and llvm::lto::thinBackend().

◆ dropDeadSymbols()

static void dropDeadSymbols ( Module &  Mod,
const GVSummaryMapTy &  DefinedGlobals,
const ModuleSummaryIndex &  Index 
)
static

Definition at line 518 of file LTOBackend.cpp.

References llvm::convertToDeclaration(), Index, llvm::DenseMapBase< DerivedT, KeyT, ValueT, KeyInfoT, BucketT >::lookup(), and llvm::Mod.

Referenced by llvm::lto::thinBackend().

◆ initAndLookupTarget()

static Expected<const Target *> initAndLookupTarget ( const Config &  C,
Module &  Mod 
)
static

Definition at line 468 of file LTOBackend.cpp.

References llvm::inconvertibleErrorCode(), llvm::TargetRegistry::lookupTarget(), llvm::Mod, and T.

Referenced by llvm::lto::backend(), and llvm::lto::thinBackend().

◆ RegisterPassPlugins()

static void RegisterPassPlugins ( ArrayRef< std::string >  PassPlugins,
PassBuilder &  PB 
)
static

Definition at line 161 of file LTOBackend.cpp.

References llvm::errs(), llvm::PassPlugin::Load(), and llvm::PassPlugin::registerPassBuilderCallbacks().

Referenced by runNewPMPasses().

◆ reportOpenError()

static LLVM_ATTRIBUTE_NORETURN void reportOpenError ( StringRef  Path,
Twine  Msg 
)
static

Definition at line 77 of file LTOBackend.cpp.

References llvm::errs(), exit(), and llvm::raw_ostream::flush().

Referenced by llvm::lto::Config::addSaveTemps().

◆ runNewPMPasses()

static void runNewPMPasses ( const Config &  Conf,
Module &  Mod,
TargetMachine *  TM,
unsigned  OptLevel,
bool  IsThinLTO,
ModuleSummaryIndex *  ExportSummary,
const ModuleSummaryIndex *  ImportSummary 
)
static

Definition at line 208 of file LTOBackend.cpp.

References llvm::lto::Config::AAPipeline, llvm::PGOOptions::CSIRInstr, llvm::lto::Config::CSIRProfile, llvm::PGOOptions::CSIRUse, llvm::lto::Config::DebugPassManager, llvm::lto::Config::Freestanding, llvm::PGOOptions::IRUse, llvm::PGOOptions::NoCSAction, llvm::lto::Config::PassPlugins, llvm::lto::Config::ProfileRemapping, llvm::lto::Config::PTO, llvm::AnalysisManager< IRUnitT, ExtraArgTs >::registerPass(), RegisterPassPlugins(), llvm::lto::Config::RunCSIRInstr, llvm::lto::Config::SampleProfile, llvm::PGOOptions::SampleUse, SI, and llvm::SystemZISD::TM.

Referenced by llvm::lto::opt().

◆ runOldPMPasses()

static void runOldPMPasses ( const Config &  Conf,
Module &  Mod,
TargetMachine *  TM,
bool  IsThinLTO,
ModuleSummaryIndex *  ExportSummary,
const ModuleSummaryIndex *  ImportSummary 
)
static

Definition at line 304 of file LTOBackend.cpp.

References llvm::legacy::PassManager::add(), llvm::createFunctionInliningPass(), llvm::createTargetTransformInfoWrapperPass(), llvm::lto::Config::CSIRProfile, llvm::TargetLibraryInfoImpl::disableAllFunctions(), llvm::lto::Config::DisableVerify, llvm::PassManagerBuilder::EnablePGOCSInstrGen, llvm::PassManagerBuilder::EnablePGOCSInstrUse, llvm::PassManagerBuilder::ExportSummary, llvm::lto::Config::Freestanding, llvm::PassManagerBuilder::ImportSummary, llvm::PassManagerBuilder::Inliner, llvm::PassManagerBuilder::LibraryInfo, llvm::PassManagerBuilder::LoopVectorize, llvm::Mod, llvm::lto::Config::OptLevel, llvm::PassManagerBuilder::OptLevel, llvm::PassManagerBuilder::PGOInstrUse, llvm::PassManagerBuilder::PGOSampleUse, llvm::PassManagerBuilder::populateLTOPassManager(), llvm::PassManagerBuilder::populateThinLTOPassManager(), llvm::legacy::PassManager::run(), llvm::lto::Config::RunCSIRInstr, llvm::lto::Config::SampleProfile, llvm::PassManagerBuilder::SLPVectorize, llvm::SystemZISD::TM, llvm::PassManagerBuilder::VerifyInput, and llvm::PassManagerBuilder::VerifyOutput.

Referenced by llvm::lto::opt().

◆ splitCodeGen()

static void splitCodeGen ( const Config &  C,
TargetMachine *  TM,
AddStreamFn  AddStream,
unsigned  ParallelCodeGenParallelismLevel,
Module &  Mod,
const ModuleSummaryIndex &  CombinedIndex 
)
static

Definition at line 417 of file LTOBackend.cpp.

References llvm::ThreadPool::async(), codegen(), createTargetMachine(), llvm::Expected< T >::get(), llvm::heavyweight_hardware_concurrency(), llvm::Mod, move, llvm::parseBitcodeFile(), llvm::report_fatal_error(), llvm::SplitModule(), T, llvm::SystemZISD::TM, llvm::ThreadPool::wait(), and llvm::WriteBitcodeToFile().

Variable Documentation

◆ EmbedBitcode

cl::opt<LTOBitcodeEmbedding> EmbedBitcode("lto-embed-bitcode", cl::init(LTOBitcodeEmbedding::DoNotEmbed), cl::values(clEnumValN(LTOBitcodeEmbedding::DoNotEmbed, "none", "Do not embed"), clEnumValN(LTOBitcodeEmbedding::EmbedOptimized, "optimized", "Embed after all optimization passes"), clEnumValN(LTOBitcodeEmbedding::EmbedPostMergePreOptimized, "post-merge-pre-opt", "Embed post merge, but before optimizations")), cl::desc("Embed LLVM bitcode in object files produced by LTO"))
static

Referenced by codegen(), llvm::EmbedBitcodeInModule(), and llvm::lto::opt().

◆ ThinLTOAssumeMerged

cl::opt<bool> ThinLTOAssumeMerged("thinlto-assume-merged", cl::init(false), cl::desc("Assume the input has already undergone ThinLTO function " "importing and the other pre-optimization pipeline changes."))
static

Referenced by llvm::lto::findThinLTOModule(), llvm::lto::initImportList(), and llvm::lto::thinBackend().

Generated on Tue May 11 2021 22:57:24 for LLVM by   doxygen 1.8.17