LTO.cpp File Reference

#include "llvm/LTO/LTO.h"
#include "llvm/ADT/ScopeExit.h"
#include "llvm/ADT/SmallSet.h"
#include "llvm/ADT/StableHashing.h"
#include "llvm/ADT/Statistic.h"
#include "llvm/ADT/StringExtras.h"
#include "llvm/Analysis/OptimizationRemarkEmitter.h"
#include "llvm/Analysis/StackSafetyAnalysis.h"
#include "llvm/Analysis/TargetLibraryInfo.h"
#include "llvm/Analysis/TargetTransformInfo.h"
#include "llvm/Bitcode/BitcodeReader.h"
#include "llvm/Bitcode/BitcodeWriter.h"
#include "llvm/CGData/CodeGenData.h"
#include "llvm/CodeGen/Analysis.h"
#include "llvm/Config/llvm-config.h"
#include "llvm/IR/AutoUpgrade.h"
#include "llvm/IR/DiagnosticPrinter.h"
#include "llvm/IR/Intrinsics.h"
#include "llvm/IR/LLVMRemarkStreamer.h"
#include "llvm/IR/LegacyPassManager.h"
#include "llvm/IR/Mangler.h"
#include "llvm/IR/Metadata.h"
#include "llvm/IR/RuntimeLibcalls.h"
#include "llvm/LTO/LTOBackend.h"
#include "llvm/Linker/IRMover.h"
#include "llvm/MC/TargetRegistry.h"
#include "llvm/Object/IRObjectFile.h"
#include "llvm/Support/Caching.h"
#include "llvm/Support/CommandLine.h"
#include "llvm/Support/Error.h"
#include "llvm/Support/FileSystem.h"
#include "llvm/Support/MemoryBuffer.h"
#include "llvm/Support/Path.h"
#include "llvm/Support/SHA1.h"
#include "llvm/Support/SourceMgr.h"
#include "llvm/Support/ThreadPool.h"
#include "llvm/Support/Threading.h"
#include "llvm/Support/TimeProfiler.h"
#include "llvm/Support/ToolOutputFile.h"
#include "llvm/Support/VCSRevision.h"
#include "llvm/Support/raw_ostream.h"
#include "llvm/Target/TargetOptions.h"
#include "llvm/Transforms/IPO.h"
#include "llvm/Transforms/IPO/MemProfContextDisambiguation.h"
#include "llvm/Transforms/IPO/WholeProgramDevirt.h"
#include "llvm/Transforms/Utils/FunctionImportUtils.h"
#include "llvm/Transforms/Utils/SplitModule.h"
#include <optional>
#include <set>

Go to the source code of this file.

Namespaces
namespace	llvm
	This is an optimization pass for GlobalISel generic memory operations.

Macros
#define	DEBUG_TYPE   "lto"

Functions
cl::opt< bool >	llvm::EnableLTOInternalization ("enable-lto-internalization", cl::init(true), cl::Hidden, cl::desc("Enable global value internalization in LTO"))
	Enable global value internalization in LTO.
static void	thinLTOResolvePrevailingGUID (const Config &C, ValueInfo VI, DenseSet< GlobalValueSummary * > &GlobalInvolvedWithAlias, function_ref< bool(GlobalValue::GUID, const GlobalValueSummary *)> isPrevailing, function_ref< void(StringRef, GlobalValue::GUID, GlobalValue::LinkageTypes)> recordNewLinkage, const DenseSet< GlobalValue::GUID > &GUIDPreservedSymbols)
static void	thinLTOInternalizeAndPromoteGUID (ValueInfo VI, function_ref< bool(StringRef, ValueInfo)> isExported, function_ref< bool(GlobalValue::GUID, const GlobalValueSummary *)> isPrevailing)
static void	writeToResolutionFile (raw_ostream &OS, InputFile *Input, ArrayRef< SymbolResolution > Res)
static void	handleNonPrevailingComdat (GlobalValue &GV, std::set< const Comdat * > &NonPrevailingComdats)

Variables
cl::opt< bool >	UseNewDbgInfoFormat
static cl::opt< bool >	DumpThinCGSCCs ("dump-thin-cg-sccs", cl::init(false), cl::Hidden, cl::desc("Dump the SCCs in the ThinLTO index's callgraph"))
cl::opt< bool >	CodeGenDataThinLTOTwoRounds
static cl::opt< bool >	llvm::LTOKeepSymbolCopies ("lto-keep-symbol-copies", cl::init(false), cl::Hidden, cl::desc("Keep copies of symbols in LTO indexing"))
cl::opt< bool >	llvm::SupportsHotColdNew
	Indicate we are linking with an allocator that supports hot/cold operator new interfaces.
cl::opt< bool >	llvm::EnableMemProfContextDisambiguation
	Enable MemProf context disambiguation for thin link.

Macro Definition Documentation

DEBUG_TYPE

#define DEBUG_TYPE   "lto"

Definition at line 68 of file LTO.cpp.

Function Documentation

handleNonPrevailingComdat()

static void handleNonPrevailingComdat ( GlobalValue &  GV, std::set< const Comdat * > &  NonPrevailingComdats  )

static

Definition at line 816 of file LTO.cpp.

References llvm::GlobalValue::AvailableExternallyLinkage, llvm::CallingConv::C, llvm::GlobalValue::getComdat(), and llvm::GlobalValue::setLinkage().

thinLTOInternalizeAndPromoteGUID()

static void thinLTOInternalizeAndPromoteGUID ( ValueInfo  VI, function_ref< bool(StringRef, ValueInfo)>  isExported, function_ref< bool(GlobalValue::GUID, const GlobalValueSummary *)>  isPrevailing  )

static

Definition at line 462 of file LTO.cpp.

References llvm::count_if(), llvm::EnableLTOInternalization, llvm::GlobalValue::ExternalLinkage, llvm::GlobalValue::InternalLinkage, llvm::GlobalValue::isExternalLinkage(), llvm::GlobalValue::isExternalWeakLinkage(), llvm::GlobalValue::isLocalLinkage(), and llvm::GlobalValue::isWeakForLinker().

Referenced by llvm::thinLTOInternalizeAndPromoteInIndex().

thinLTOResolvePrevailingGUID()

static void thinLTOResolvePrevailingGUID ( const Config &  C, ValueInfo  VI, DenseSet< GlobalValueSummary * > &  GlobalInvolvedWithAlias, function_ref< bool(GlobalValue::GUID, const GlobalValueSummary *)>  isPrevailing, function_ref< void(StringRef, GlobalValue::GUID, GlobalValue::LinkageTypes)>  recordNewLinkage, const DenseSet< GlobalValue::GUID > &  GUIDPreservedSymbols  )

static

Definition at line 363 of file LTO.cpp.

References llvm::GlobalValue::AvailableExternallyLinkage, llvm::CallingConv::C, llvm::detail::DenseSetImpl< ValueT, MapTy, ValueInfoT >::count(), llvm::GlobalValue::DefaultVisibility, llvm::lto::Config::ELF, llvm::lto::Config::FromPrevailing, llvm::GlobalValue::getWeakLinkage(), llvm::GlobalValue::isAppendingLinkage(), llvm::GlobalValue::isLinkOnceLinkage(), llvm::GlobalValue::isLinkOnceODRLinkage(), and llvm::GlobalValue::isLocalLinkage().

Referenced by llvm::thinLTOResolvePrevailingInIndex().

writeToResolutionFile()

static void writeToResolutionFile ( raw_ostream &  OS, InputFile *  Input, ArrayRef< SymbolResolution >  Res  )

static

Definition at line 704 of file LTO.cpp.

References assert(), llvm::ArrayRef< T >::begin(), llvm::ArrayRef< T >::end(), llvm::lto::SymbolResolution::FinalDefinitionInLinkageUnit, llvm::raw_ostream::flush(), llvm::lto::InputFile::getName(), llvm::lto::SymbolResolution::LinkerRedefined, OS, llvm::lto::SymbolResolution::Prevailing, Sym, llvm::lto::InputFile::symbols(), and llvm::lto::SymbolResolution::VisibleToRegularObj.

Referenced by llvm::lto::LTO::add().

Variable Documentation

CodeGenDataThinLTOTwoRounds

cl::opt<bool> CodeGenDataThinLTOTwoRounds

extern

DumpThinCGSCCs

cl::opt< bool > DumpThinCGSCCs("dump-thin-cg-sccs", cl::init(false), cl::Hidden, cl::desc("Dump the SCCs in the ThinLTO index's callgraph")) ( "dump-thin-cg-sccs"  , cl::init(false)  , cl::Hidden  , cl::desc("Dump the SCCs in the ThinLTO index's callgraph")    )

static

UseNewDbgInfoFormat

cl::opt<bool> UseNewDbgInfoFormat

extern