AsmPrinter.cpp File Reference

#include "llvm/CodeGen/AsmPrinter.h"
#include "CodeViewDebug.h"
#include "DwarfDebug.h"
#include "DwarfException.h"
#include "WasmException.h"
#include "WinCFGuard.h"
#include "WinException.h"
#include "llvm/ADT/APFloat.h"
#include "llvm/ADT/APInt.h"
#include "llvm/ADT/DenseMap.h"
#include "llvm/ADT/STLExtras.h"
#include "llvm/ADT/SmallPtrSet.h"
#include "llvm/ADT/SmallString.h"
#include "llvm/ADT/SmallVector.h"
#include "llvm/ADT/Statistic.h"
#include "llvm/ADT/StringRef.h"
#include "llvm/ADT/Triple.h"
#include "llvm/ADT/Twine.h"
#include "llvm/Analysis/ConstantFolding.h"
#include "llvm/Analysis/EHPersonalities.h"
#include "llvm/Analysis/OptimizationRemarkEmitter.h"
#include "llvm/BinaryFormat/COFF.h"
#include "llvm/BinaryFormat/Dwarf.h"
#include "llvm/BinaryFormat/ELF.h"
#include "llvm/CodeGen/AsmPrinterHandler.h"
#include "llvm/CodeGen/GCMetadata.h"
#include "llvm/CodeGen/GCMetadataPrinter.h"
#include "llvm/CodeGen/GCStrategy.h"
#include "llvm/CodeGen/MachineBasicBlock.h"
#include "llvm/CodeGen/MachineConstantPool.h"
#include "llvm/CodeGen/MachineDominators.h"
#include "llvm/CodeGen/MachineFrameInfo.h"
#include "llvm/CodeGen/MachineFunction.h"
#include "llvm/CodeGen/MachineFunctionPass.h"
#include "llvm/CodeGen/MachineInstr.h"
#include "llvm/CodeGen/MachineInstrBundle.h"
#include "llvm/CodeGen/MachineJumpTableInfo.h"
#include "llvm/CodeGen/MachineLoopInfo.h"
#include "llvm/CodeGen/MachineMemOperand.h"
#include "llvm/CodeGen/MachineModuleInfo.h"
#include "llvm/CodeGen/MachineModuleInfoImpls.h"
#include "llvm/CodeGen/MachineOperand.h"
#include "llvm/CodeGen/MachineOptimizationRemarkEmitter.h"
#include "llvm/CodeGen/StackMaps.h"
#include "llvm/CodeGen/TargetFrameLowering.h"
#include "llvm/CodeGen/TargetInstrInfo.h"
#include "llvm/CodeGen/TargetLowering.h"
#include "llvm/CodeGen/TargetOpcodes.h"
#include "llvm/CodeGen/TargetRegisterInfo.h"
#include "llvm/CodeGen/TargetSubtargetInfo.h"
#include "llvm/IR/BasicBlock.h"
#include "llvm/IR/Comdat.h"
#include "llvm/IR/Constant.h"
#include "llvm/IR/Constants.h"
#include "llvm/IR/DataLayout.h"
#include "llvm/IR/DebugInfoMetadata.h"
#include "llvm/IR/DerivedTypes.h"
#include "llvm/IR/Function.h"
#include "llvm/IR/GlobalAlias.h"
#include "llvm/IR/GlobalIFunc.h"
#include "llvm/IR/GlobalIndirectSymbol.h"
#include "llvm/IR/GlobalObject.h"
#include "llvm/IR/GlobalValue.h"
#include "llvm/IR/GlobalVariable.h"
#include "llvm/IR/Instruction.h"
#include "llvm/IR/Mangler.h"
#include "llvm/IR/Metadata.h"
#include "llvm/IR/Module.h"
#include "llvm/IR/Operator.h"
#include "llvm/IR/Type.h"
#include "llvm/IR/Value.h"
#include "llvm/MC/MCAsmInfo.h"
#include "llvm/MC/MCCodePadder.h"
#include "llvm/MC/MCContext.h"
#include "llvm/MC/MCDirectives.h"
#include "llvm/MC/MCDwarf.h"
#include "llvm/MC/MCExpr.h"
#include "llvm/MC/MCInst.h"
#include "llvm/MC/MCSection.h"
#include "llvm/MC/MCSectionCOFF.h"
#include "llvm/MC/MCSectionELF.h"
#include "llvm/MC/MCSectionMachO.h"
#include "llvm/MC/MCStreamer.h"
#include "llvm/MC/MCSubtargetInfo.h"
#include "llvm/MC/MCSymbol.h"
#include "llvm/MC/MCSymbolELF.h"
#include "llvm/MC/MCTargetOptions.h"
#include "llvm/MC/MCValue.h"
#include "llvm/MC/SectionKind.h"
#include "llvm/Pass.h"
#include "llvm/Support/Casting.h"
#include "llvm/Support/CommandLine.h"
#include "llvm/Support/Compiler.h"
#include "llvm/Support/ErrorHandling.h"
#include "llvm/Support/Format.h"
#include "llvm/Support/MathExtras.h"
#include "llvm/Support/Path.h"
#include "llvm/Support/TargetRegistry.h"
#include "llvm/Support/Timer.h"
#include "llvm/Support/raw_ostream.h"
#include "llvm/Target/TargetLoweringObjectFile.h"
#include "llvm/Target/TargetMachine.h"
#include "llvm/Target/TargetOptions.h"
#include <algorithm>
#include <cassert>
#include <cinttypes>
#include <cstdint>
#include <iterator>
#include <limits>
#include <memory>
#include <string>
#include <utility>
#include <vector>

Go to the source code of this file.

Macros
#define	DEBUG_TYPE   "asm-printer"

Typedefs
using	gcp_map_type = DenseMap< GCStrategy *, std::unique_ptr< GCMetadataPrinter > >

Functions
	STATISTIC (EmittedInsts, "Number of machine instrs printed")
static gcp_map_type &	getGCMap (void *&P)
static unsigned	getGVAlignmentLog2 (const GlobalValue *GV, const DataLayout &DL, unsigned InBits=0)
	getGVAlignmentLog2 - Return the alignment to use for the specified global value in log2 form. More...
static bool	canBeHidden (const GlobalValue *GV, const MCAsmInfo &MAI)
static bool	emitComments (const MachineInstr &MI, raw_ostream &CommentOS, AsmPrinter *AP)
	emitComments - Pretty-print comments for instructions. More...
static void	emitKill (const MachineInstr *MI, AsmPrinter &AP)
static bool	emitDebugValueComment (const MachineInstr *MI, AsmPrinter &AP)
	emitDebugValueComment - This method handles the target-independent form of DBG_VALUE, returning true if it was able to do so. More...
static bool	emitDebugLabelComment (const MachineInstr *MI, AsmPrinter &AP)
	This method handles the target-independent form of DBG_LABEL, returning true if it was able to do so. More...
static bool	needFuncLabelsForEHOrDebugInfo (const MachineFunction &MF, MachineModuleInfo *MMI)
static unsigned	getNumGlobalVariableUses (const Constant *C)
	Compute the number of Global Variables that uses a Constant. More...
static bool	isGOTEquivalentCandidate (const GlobalVariable *GV, unsigned &NumGOTEquivUsers)
	Only consider global GOT equivalents if at least one user is a cstexpr inside an initializer of another global variables. More...
static void	emitGlobalConstantImpl (const DataLayout &DL, const Constant *C, AsmPrinter &AP, const Constant *BaseCV=nullptr, uint64_t Offset=0)
static void	emitGlobalConstantFP (const ConstantFP *CFP, AsmPrinter &AP)
static void	emitGlobalConstantFP (APFloat APF, Type *ET, AsmPrinter &AP)
static int	isRepeatedByteSequence (const ConstantDataSequential *V)
	isRepeatedByteSequence - Determine whether the given value is composed of a repeated sequence of identical bytes and return the byte value. More...
static int	isRepeatedByteSequence (const Value *V, const DataLayout &DL)
	isRepeatedByteSequence - Determine whether the given value is composed of a repeated sequence of identical bytes and return the byte value. More...
static void	emitGlobalConstantDataSequential (const DataLayout &DL, const ConstantDataSequential *CDS, AsmPrinter &AP)
static void	emitGlobalConstantArray (const DataLayout &DL, const ConstantArray *CA, AsmPrinter &AP, const Constant *BaseCV, uint64_t Offset)
static void	emitGlobalConstantVector (const DataLayout &DL, const ConstantVector *CV, AsmPrinter &AP)
static void	emitGlobalConstantStruct (const DataLayout &DL, const ConstantStruct *CS, AsmPrinter &AP, const Constant *BaseCV, uint64_t Offset)
static void	emitGlobalConstantLargeInt (const ConstantInt *CI, AsmPrinter &AP)
static void	handleIndirectSymViaGOTPCRel (AsmPrinter &AP, const MCExpr **ME, const Constant *BaseCst, uint64_t Offset)
	Transform a not absolute MCExpr containing a reference to a GOT equivalent global, by a target specific GOT pc relative access to the final symbol. More...
static void	PrintParentLoopComment (raw_ostream &OS, const MachineLoop *Loop, unsigned FunctionNumber)
	PrintParentLoopComment - Print comments about parent loops of this one. More...
static void	PrintChildLoopComment (raw_ostream &OS, const MachineLoop *Loop, unsigned FunctionNumber)
	PrintChildLoopComment - Print comments about child loops within the loop for this basic block, with nesting. More...
static void	emitBasicBlockLoopComments (const MachineBasicBlock &MBB, const MachineLoopInfo *LI, const AsmPrinter &AP)
	emitBasicBlockLoopComments - Pretty-print comments for basic blocks. More...

Variables
static const char *const	DWARFGroupName = "dwarf"
static const char *const	DWARFGroupDescription = "DWARF Emission"
static const char *const	DbgTimerName = "emit"
static const char *const	DbgTimerDescription = "Debug Info Emission"
static const char *const	EHTimerName = "write_exception"
static const char *const	EHTimerDescription = "DWARF Exception Writer"
static const char *const	CFGuardName = "Control Flow Guard"
static const char *const	CFGuardDescription = "Control Flow Guard Tables"
static const char *const	CodeViewLineTablesGroupName = "linetables"
static const char *const	CodeViewLineTablesGroupDescription
static cl::opt< bool >	PrintSchedule ("print-schedule", cl::Hidden, cl::init(false), cl::desc("Print 'sched: [latency:throughput]' in .s output"))

Macro Definition Documentation

DEBUG_TYPE

#define DEBUG_TYPE   "asm-printer"

Definition at line 130 of file AsmPrinter.cpp.

Referenced by llvm::AsmPrinter::EmitFunctionBody().

Typedef Documentation

gcp_map_type

using gcp_map_type = DenseMap<GCStrategy *, std::unique_ptr<GCMetadataPrinter> >

Definition at line 152 of file AsmPrinter.cpp.

Function Documentation

canBeHidden()

static bool canBeHidden ( const GlobalValue *  GV, const MCAsmInfo &  MAI  )

static

Definition at line 377 of file AsmPrinter.cpp.

References llvm::GlobalValue::AppendingLinkage, llvm::GlobalValue::AvailableExternallyLinkage, llvm::GlobalValue::canBeOmittedFromSymbolTable(), llvm::GlobalValue::CommonLinkage, llvm::GlobalValue::ExternalLinkage, llvm::GlobalValue::ExternalWeakLinkage, llvm::GlobalValue::getLinkage(), llvm::MCAsmInfo::hasLinkOnceDirective(), llvm::MCAsmInfo::hasWeakDefCanBeHiddenDirective(), llvm::MCAsmInfo::hasWeakDefDirective(), llvm::GlobalValue::InternalLinkage, llvm::GlobalValue::LinkOnceAnyLinkage, llvm::GlobalValue::LinkOnceODRLinkage, llvm_unreachable, llvm::AsmPrinter::MAI, llvm::MCSA_Global, llvm::MCSA_Weak, llvm::MCSA_WeakDefAutoPrivate, llvm::MCSA_WeakDefinition, llvm::AsmPrinter::OutStreamer, llvm::GlobalValue::PrivateLinkage, llvm::GlobalValue::WeakAnyLinkage, and llvm::GlobalValue::WeakODRLinkage.

emitBasicBlockLoopComments()

static void emitBasicBlockLoopComments ( const MachineBasicBlock &  MBB, const MachineLoopInfo *  LI, const AsmPrinter &  AP  )

static

emitBasicBlockLoopComments - Pretty-print comments for basic blocks.

Definition at line 2820 of file AsmPrinter.cpp.

References assert(), Context, llvm::LoopBase< BlockT, LoopT >::empty(), llvm::find(), llvm::MachineFunction::getFunction(), llvm::AsmPrinter::getFunctionNumber(), llvm::LoopBase< BlockT, LoopT >::getHeader(), llvm::LoopBase< BlockT, LoopT >::getLoopDepth(), llvm::MachineLoopInfo::getLoopFor(), llvm::MachineBasicBlock::getNumber(), llvm::TargetMachine::getOptLevel(), llvm::LoopBase< BlockT, LoopT >::getParentLoop(), llvm::ilist_node_with_parent< NodeTy, ParentTy, Options >::getPrevNode(), llvm::MachineFunction::hasInlineAsm(), llvm::raw_ostream::indent(), llvm::MCCodePaddingContext::IsBasicBlockReachableViaBranch, llvm::MCCodePaddingContext::IsBasicBlockReachableViaFallthrough, llvm::AsmPrinter::isBlockOnlyReachableByFallthrough(), llvm::MCCodePaddingContext::IsPaddingActive, llvm::AsmPrinter::MF, llvm::CodeGenOpt::None, llvm::Function::optForSize(), llvm::AsmPrinter::OutStreamer, llvm::MachineBasicBlock::pred_begin(), llvm::MachineBasicBlock::pred_end(), llvm::MachineBasicBlock::pred_size(), PrintChildLoopComment(), PrintParentLoopComment(), and llvm::AsmPrinter::TM.

Referenced by llvm::AsmPrinter::EmitBasicBlockStart().

emitComments()

static bool emitComments ( const MachineInstr &  MI, raw_ostream &  CommentOS, AsmPrinter *  AP  )

static

emitComments - Pretty-print comments for instructions.

It returns true iff the sched comment was emitted. Otherwise it returns false.

Definition at line 743 of file AsmPrinter.cpp.

References llvm::AsmPrinter::EnablePrintSchedInfo, llvm::MachineInstr::getAsmPrinterFlag(), llvm::MachineFunction::getFrameInfo(), llvm::TargetSubtargetInfo::getInstrInfo(), llvm::MachineInstr::getMF(), llvm::TargetSubtargetInfo::getSchedInfoStr(), llvm::MachineMemOperand::getSize(), llvm::MachineFunction::getSubtarget(), llvm::TargetInstrInfo::hasLoadFromStackSlot(), llvm::TargetInstrInfo::hasStoreToStackSlot(), llvm::TargetInstrInfo::isLoadFromStackSlotPostFE(), llvm::MachineFrameInfo::isSpillSlotObjectIndex(), llvm::TargetInstrInfo::isStoreToStackSlotPostFE(), llvm::MachineInstr::memoperands_begin(), llvm::AsmPrinter::MF, llvm::MachineInstr::ReloadReuse, Size, and TII.

Referenced by llvm::AsmPrinter::EmitFunctionBody().

emitDebugLabelComment()

static bool emitDebugLabelComment ( const MachineInstr *  MI, AsmPrinter &  AP  )

static

This method handles the target-independent form of DBG_LABEL, returning true if it was able to do so.

A false return means the target will need to handle MI in EmitInstruction.

Definition at line 932 of file AsmPrinter.cpp.

References llvm::StringRef::empty(), llvm::MachineInstr::getDebugLabel(), llvm::DILabel::getName(), llvm::MachineInstr::getNumOperands(), llvm::DILabel::getScope(), Name, llvm::AsmPrinter::OutStreamer, and llvm::raw_svector_ostream::str().

Referenced by llvm::AsmPrinter::EmitFunctionBody().

emitDebugValueComment()

static bool emitDebugValueComment ( const MachineInstr *  MI, AsmPrinter &  AP  )

static

emitDebugValueComment - This method handles the target-independent form of DBG_VALUE, returning true if it was able to do so.

A false return means the target will need to handle MI in EmitInstruction.

Definition at line 842 of file AsmPrinter.cpp.

References llvm::lltok::APFloat, assert(), llvm::APFloat::convert(), llvm::APFloat::convertToDouble(), llvm::APFloat::convertToFloat(), llvm::StringRef::empty(), llvm::DIExpression::expr_ops(), llvm::MachineOperand::getCImm(), llvm::MachineInstr::getDebugExpression(), llvm::MachineInstr::getDebugVariable(), llvm::MachineOperand::getFPImm(), llvm::TargetFrameLowering::getFrameIndexReference(), llvm::TargetSubtargetInfo::getFrameLowering(), llvm::MachineOperand::getImm(), llvm::MachineOperand::getIndex(), llvm::DIVariable::getName(), llvm::DIExpression::getNumElements(), llvm::MachineInstr::getNumOperands(), llvm::MachineInstr::getOperand(), llvm::MachineOperand::getReg(), llvm::TargetSubtargetInfo::getRegisterInfo(), llvm::DILocalVariable::getScope(), llvm::MachineFunction::getSubtarget(), llvm::Value::getType(), llvm::ConstantInt::getValue(), llvm::ConstantFP::getValueAPF(), I, llvm::APFloatBase::IEEEdouble(), llvm::MachineOperand::isCImm(), llvm::Type::isDoubleTy(), llvm::MachineOperand::isFI(), llvm::Type::isFloatTy(), llvm::MachineOperand::isFPImm(), llvm::MachineOperand::isImm(), llvm::MachineOperand::isReg(), llvm::AsmPrinter::MF, Name, llvm::dwarf::OperationEncodingString(), llvm::AsmPrinter::OutStreamer, llvm::APInt::print(), llvm::printReg(), Reg, llvm::APFloatBase::rmNearestTiesToEven, and llvm::raw_svector_ostream::str().

Referenced by llvm::AsmPrinter::EmitFunctionBody().

emitGlobalConstantArray()

static void emitGlobalConstantArray ( const DataLayout &  DL, const ConstantArray *  CA, AsmPrinter &  AP, const Constant *  BaseCV, uint64_t  Offset  )

static

Definition at line 2364 of file AsmPrinter.cpp.

References emitGlobalConstantImpl(), llvm::User::getNumOperands(), llvm::User::getOperand(), llvm::Value::getType(), llvm::ConstantArray::getType(), llvm::DataLayout::getTypeAllocSize(), isRepeatedByteSequence(), and llvm::AsmPrinter::OutStreamer.

Referenced by emitGlobalConstantImpl().

emitGlobalConstantDataSequential()

static void emitGlobalConstantDataSequential ( const DataLayout &  DL, const ConstantDataSequential *  CDS, AsmPrinter &  AP  )

static

Definition at line 2324 of file AsmPrinter.cpp.

References assert(), E, emitGlobalConstantFP(), llvm::format(), llvm::ConstantDataSequential::getAsString(), llvm::ConstantDataSequential::getElementAsAPFloat(), llvm::ConstantDataSequential::getElementAsInteger(), llvm::ConstantDataSequential::getElementByteSize(), llvm::SequentialType::getElementType(), llvm::ConstantDataSequential::getElementType(), llvm::ConstantDataSequential::getNumElements(), llvm::ConstantDataSequential::getType(), llvm::DataLayout::getTypeAllocSize(), I, isRepeatedByteSequence(), llvm::ConstantDataSequential::isString(), llvm::AsmPrinter::isVerbose(), llvm::AsmPrinter::OutStreamer, and Size.

Referenced by emitGlobalConstantImpl().

emitGlobalConstantFP() [1/2]

static void emitGlobalConstantFP ( const ConstantFP *  CFP, AsmPrinter &  AP  )

static

Definition at line 2470 of file AsmPrinter.cpp.

References llvm::Value::getType(), and llvm::ConstantFP::getValueAPF().

Referenced by emitGlobalConstantDataSequential(), emitGlobalConstantImpl(), and llvm::AsmPrinter::lowerConstant().

emitGlobalConstantFP() [2/2]

static void emitGlobalConstantFP ( APFloat  APF, Type *  ET, AsmPrinter &  AP  )

static

Definition at line 2423 of file AsmPrinter.cpp.

References llvm::APFloat::bitcastToAPInt(), llvm::APInt::getBitWidth(), llvm::AsmPrinter::getDataLayout(), llvm::APInt::getNumWords(), llvm::APInt::getRawData(), llvm::DataLayout::getTypeAllocSize(), llvm::DataLayout::getTypeStoreSize(), llvm::DataLayout::isBigEndian(), llvm::Type::isPPC_FP128Ty(), llvm::AsmPrinter::isVerbose(), llvm::AsmPrinter::OutStreamer, llvm::Type::print(), llvm::tgtok::StrVal, and llvm::APFloat::toString().

emitGlobalConstantImpl()

static void emitGlobalConstantImpl ( const DataLayout &  DL, const Constant *  C, AsmPrinter &  AP, const Constant *  BaseCV = nullptr, uint64_t  Offset = 0  )

static

Definition at line 2621 of file AsmPrinter.cpp.

References llvm::ConstantFoldConstant(), emitGlobalConstantArray(), emitGlobalConstantDataSequential(), emitGlobalConstantFP(), emitGlobalConstantLargeInt(), emitGlobalConstantStruct(), emitGlobalConstantVector(), llvm::format(), llvm::AsmPrinter::getObjFileLowering(), llvm::Value::getType(), llvm::DataLayout::getTypeAllocSize(), handleIndirectSymViaGOTPCRel(), llvm::Value::hasOneUse(), llvm::AsmPrinter::isVerbose(), llvm::AsmPrinter::lowerConstant(), llvm::AsmPrinter::OutStreamer, Size, llvm::TargetLoweringObjectFile::supportIndirectSymViaGOTPCRel(), and llvm::Value::user_back().

Referenced by llvm::AsmPrinter::EmitGlobalConstant(), emitGlobalConstantArray(), emitGlobalConstantStruct(), emitGlobalConstantVector(), and llvm::AsmPrinter::lowerConstant().

emitGlobalConstantLargeInt()

static void emitGlobalConstantLargeInt ( const ConstantInt *  CI, AsmPrinter &  AP  )

static

Definition at line 2474 of file AsmPrinter.cpp.

References assert(), llvm::ConstantInt::getBitWidth(), llvm::AsmPrinter::getDataLayout(), llvm::ConstantInt::getType(), llvm::DataLayout::getTypeAllocSize(), llvm::ConstantInt::getValue(), llvm::DataLayout::isBigEndian(), llvm::AsmPrinter::OutStreamer, and Size.

Referenced by emitGlobalConstantImpl().

emitGlobalConstantStruct()

static void emitGlobalConstantStruct ( const DataLayout &  DL, const ConstantStruct *  CS, AsmPrinter &  AP, const Constant *  BaseCV, uint64_t  Offset  )

static

Definition at line 2395 of file AsmPrinter.cpp.

References assert(), emitGlobalConstantImpl(), llvm::tgtok::Field, llvm::StructLayout::getElementOffset(), llvm::User::getNumOperands(), llvm::User::getOperand(), llvm::StructLayout::getSizeInBytes(), llvm::DataLayout::getStructLayout(), llvm::Value::getType(), llvm::ConstantStruct::getType(), llvm::DataLayout::getTypeAllocSize(), llvm::AsmPrinter::OutStreamer, and Size.

Referenced by emitGlobalConstantImpl().

emitGlobalConstantVector()

static void emitGlobalConstantVector ( const DataLayout &  DL, const ConstantVector *  CV, AsmPrinter &  AP  )

static

Definition at line 2383 of file AsmPrinter.cpp.

References emitGlobalConstantImpl(), llvm::SequentialType::getElementType(), llvm::SequentialType::getNumElements(), llvm::User::getOperand(), llvm::ConstantVector::getType(), llvm::DataLayout::getTypeAllocSize(), llvm::AsmPrinter::OutStreamer, and Size.

Referenced by emitGlobalConstantImpl().

emitKill()

static void emitKill ( const MachineInstr *  MI, AsmPrinter &  AP  )

static

Definition at line 825 of file AsmPrinter.cpp.

References assert(), llvm::MachineInstr::getNumOperands(), llvm::MachineInstr::getOperand(), llvm::MachineOperand::getReg(), llvm::TargetSubtargetInfo::getRegisterInfo(), llvm::MachineFunction::getSubtarget(), llvm::MachineOperand::isDef(), llvm::MachineOperand::isReg(), llvm::AsmPrinter::MF, llvm::AsmPrinter::OutStreamer, llvm::printReg(), and llvm::raw_string_ostream::str().

Referenced by llvm::AsmPrinter::EmitFunctionBody().

getGCMap()

static gcp_map_type& getGCMap ( void *&  P )

static

Definition at line 154 of file AsmPrinter.cpp.

Referenced by llvm::AsmPrinter::isBlockOnlyReachableByFallthrough(), and llvm::AsmPrinter::~AsmPrinter().

getGVAlignmentLog2()

static unsigned getGVAlignmentLog2 ( const GlobalValue *  GV, const DataLayout &  DL, unsigned  InBits = 0  )

static

getGVAlignmentLog2 - Return the alignment to use for the specified global value in log2 form.

This rounds up to the preferred alignment if possible and legal.

Definition at line 163 of file AsmPrinter.cpp.

References llvm::GlobalValue::getAlignment(), llvm::DataLayout::getPreferredAlignmentLog(), llvm::GlobalValue::hasSection(), and llvm::Log2_32().

Referenced by llvm::AsmPrinter::EmitAlignment(), and llvm::AsmPrinter::EmitGlobalVariable().

getNumGlobalVariableUses()

static unsigned getNumGlobalVariableUses ( const Constant *  C )

static

Compute the number of Global Variables that uses a Constant.

Definition at line 1243 of file AsmPrinter.cpp.

References llvm::Value::users().

Referenced by isGOTEquivalentCandidate().

handleIndirectSymViaGOTPCRel()

static void handleIndirectSymViaGOTPCRel ( AsmPrinter &  AP, const MCExpr **  ME, const Constant *  BaseCst, uint64_t  Offset  )

static

Transform a not absolute MCExpr containing a reference to a GOT equivalent global, by a target specific GOT pc relative access to the final symbol.

Definition at line 2533 of file AsmPrinter.cpp.

References llvm::MCValue::getConstant(), llvm::TargetLoweringObjectFile::getIndirectSymViaGOTPCRel(), llvm::AsmPrinter::getObjFileLowering(), llvm::User::getOperand(), llvm::MCValue::getSymA(), llvm::MCValue::getSymB(), llvm::AsmPrinter::getSymbol(), llvm::MCSymbolRefExpr::getSymbol(), llvm::AsmPrinter::GlobalGOTEquivs, llvm::MCValue::isAbsolute(), llvm::AsmPrinter::MMI, llvm::AsmPrinter::OutStreamer, and llvm::TargetLoweringObjectFile::supportGOTPCRelWithOffset().

Referenced by emitGlobalConstantImpl().

isGOTEquivalentCandidate()

static bool isGOTEquivalentCandidate ( const GlobalVariable *  GV, unsigned &  NumGOTEquivUsers  )

static

Only consider global GOT equivalents if at least one user is a cstexpr inside an initializer of another global variables.

Also, don't handle cstexpr inside instructions. During global variable emission, candidates are skipped and are emitted later in case at least one cstexpr isn't replaced by a PC relative GOT entry access.

Definition at line 1262 of file AsmPrinter.cpp.

References llvm::dyn_cast(), getNumGlobalVariableUses(), llvm::User::getOperand(), llvm::GlobalValue::hasGlobalUnnamedAddr(), llvm::GlobalVariable::hasInitializer(), llvm::GlobalVariable::isConstant(), llvm::GlobalValue::isDiscardableIfUnused(), and llvm::Value::users().

Referenced by llvm::AsmPrinter::computeGlobalGOTEquivs().

isRepeatedByteSequence() [1/2]

static int isRepeatedByteSequence ( const ConstantDataSequential *  V )

static

isRepeatedByteSequence - Determine whether the given value is composed of a repeated sequence of identical bytes and return the byte value.

If it is not a repeated sequence, return -1.

Definition at line 2278 of file AsmPrinter.cpp.

References assert(), C, llvm::Data, llvm::StringRef::empty(), llvm::ConstantDataSequential::getRawDataValues(), and llvm::StringRef::size().

Referenced by emitGlobalConstantArray(), emitGlobalConstantDataSequential(), and isRepeatedByteSequence().

isRepeatedByteSequence() [2/2]

static int isRepeatedByteSequence ( const Value *  V, const DataLayout &  DL  )

static

isRepeatedByteSequence - Determine whether the given value is composed of a repeated sequence of identical bytes and return the byte value.

If it is not a repeated sequence, return -1.

Definition at line 2290 of file AsmPrinter.cpp.

References assert(), llvm::User::getOperand(), llvm::Value::getType(), llvm::DataLayout::getTypeAllocSizeInBits(), llvm::APInt::getZExtValue(), isRepeatedByteSequence(), llvm::APInt::isSplat(), Size, and llvm::APInt::zextOrTrunc().

needFuncLabelsForEHOrDebugInfo()

static bool needFuncLabelsForEHOrDebugInfo ( const MachineFunction &  MF, MachineModuleInfo *  MMI  )

static

Definition at line 1028 of file AsmPrinter.cpp.

References llvm::classifyEHPersonality(), llvm::MachineFunction::getFunction(), llvm::MachineFunction::getLandingPads(), llvm::Function::getPersonalityFn(), llvm::MachineModuleInfo::hasDebugInfo(), llvm::MachineFunction::hasEHFunclets(), llvm::Function::hasPersonalityFn(), and llvm::isNoOpWithoutInvoke().

Referenced by llvm::AsmPrinter::EmitFunctionBody(), and llvm::AsmPrinter::SetupMachineFunction().

PrintChildLoopComment()

static void PrintChildLoopComment ( raw_ostream &  OS, const MachineLoop *  Loop, unsigned  FunctionNumber  )

static

PrintChildLoopComment - Print comments about child loops within the loop for this basic block, with nesting.

Definition at line 2807 of file AsmPrinter.cpp.

References llvm::raw_ostream::indent().

Referenced by emitBasicBlockLoopComments().

PrintParentLoopComment()

static void PrintParentLoopComment ( raw_ostream &  OS, const MachineLoop *  Loop, unsigned  FunctionNumber  )

static

PrintParentLoopComment - Print comments about parent loops of this one.

Definition at line 2795 of file AsmPrinter.cpp.

References FunctionNumber(), llvm::LoopBase< BlockT, LoopT >::getHeader(), llvm::LoopBase< BlockT, LoopT >::getLoopDepth(), llvm::MachineBasicBlock::getNumber(), llvm::LoopBase< BlockT, LoopT >::getParentLoop(), and llvm::raw_ostream::indent().

Referenced by emitBasicBlockLoopComments().

STATISTIC()

STATISTIC	(	EmittedInsts	,
		"Number of machine instrs printed"
	)

Variable Documentation

CFGuardDescription

const char* const CFGuardDescription = "Control Flow Guard Tables"

static

Definition at line 139 of file AsmPrinter.cpp.

CFGuardName

const char* const CFGuardName = "Control Flow Guard"

static

Definition at line 138 of file AsmPrinter.cpp.

CodeViewLineTablesGroupDescription

const char* const CodeViewLineTablesGroupDescription

static

Initial value:

=
  "CodeView Line Tables"

Definition at line 141 of file AsmPrinter.cpp.

CodeViewLineTablesGroupName

const char* const CodeViewLineTablesGroupName = "linetables"

static

Definition at line 140 of file AsmPrinter.cpp.

DbgTimerDescription

const char* const DbgTimerDescription = "Debug Info Emission"

static

Definition at line 135 of file AsmPrinter.cpp.

DbgTimerName

const char* const DbgTimerName = "emit"

static

Definition at line 134 of file AsmPrinter.cpp.

DWARFGroupDescription

const char* const DWARFGroupDescription = "DWARF Emission"

static

Definition at line 133 of file AsmPrinter.cpp.

DWARFGroupName

const char* const DWARFGroupName = "dwarf"

static

Definition at line 132 of file AsmPrinter.cpp.

EHTimerDescription

const char* const EHTimerDescription = "DWARF Exception Writer"

static

Definition at line 137 of file AsmPrinter.cpp.

EHTimerName

const char* const EHTimerName = "write_exception"

static

Definition at line 136 of file AsmPrinter.cpp.

PrintSchedule

cl::opt<bool> PrintSchedule("print-schedule", cl::Hidden, cl::init(false), cl::desc("Print 'sched: [latency:throughput]' in .s output"))

static

Referenced by llvm::AsmPrinter::SetupMachineFunction().