LLVM  7.0.0svn
Public Member Functions | Protected Member Functions | List of all members
llvm::LLVMTargetMachine Class Reference

This class describes a target machine that is implemented with the LLVM target-independent code generator. More...

#include "llvm/Target/TargetMachine.h"

Inheritance diagram for llvm::LLVMTargetMachine:
Inheritance graph
Collaboration diagram for llvm::LLVMTargetMachine:
Collaboration graph

Public Member Functions

TargetTransformInfo getTargetTransformInfo (const Function &F) override
 Get a TargetTransformInfo implementation for the target. More...
virtual TargetPassConfigcreatePassConfig (PassManagerBase &PM)
 Create a pass configuration object to be used by addPassToEmitX methods for generating a pipeline of CodeGen passes. More...
bool addPassesToEmitFile (PassManagerBase &PM, raw_pwrite_stream &Out, CodeGenFileType FileType, bool DisableVerify=true, MachineModuleInfo *MMI=nullptr) override
 Add passes to the specified pass manager to get the specified file emitted. More...
bool addPassesToEmitMC (PassManagerBase &PM, MCContext *&Ctx, raw_pwrite_stream &OS, bool DisableVerify=true) override
 Add passes to the specified pass manager to get machine code emitted with the MCJIT. More...
virtual bool isMachineVerifierClean () const
 Returns true if the target is expected to pass all machine verifier checks. More...
bool addAsmPrinter (PassManagerBase &PM, raw_pwrite_stream &Out, CodeGenFileType FileTYpe, MCContext &Context)
 Adds an AsmPrinter pass to the pipeline that prints assembly or machine code from the MI representation. More...
- Public Member Functions inherited from llvm::TargetMachine
 TargetMachine (const TargetMachine &)=delete
void operator= (const TargetMachine &)=delete
virtual ~TargetMachine ()
const TargetgetTarget () const
const TriplegetTargetTriple () const
StringRef getTargetCPU () const
StringRef getTargetFeatureString () const
virtual const TargetSubtargetInfogetSubtargetImpl (const Function &) const
 Virtual method implemented by subclasses that returns a reference to that target's TargetSubtargetInfo-derived member variable. More...
virtual TargetLoweringObjectFilegetObjFileLowering () const
template<typename STC >
const STC & getSubtarget (const Function &F) const
 This method returns a pointer to the specified type of TargetSubtargetInfo. More...
const DataLayout createDataLayout () const
 Create a DataLayout. More...
bool isCompatibleDataLayout (const DataLayout &Candidate) const
 Test if a DataLayout if compatible with the CodeGen for this target. More...
unsigned getPointerSize () const
 Get the pointer size for this target. More...
void resetTargetOptions (const Function &F) const
 Reset the target options based on the function's attributes. More...
const MCAsmInfogetMCAsmInfo () const
 Return target specific asm information. More...
const MCRegisterInfogetMCRegisterInfo () const
const MCInstrInfogetMCInstrInfo () const
const MCSubtargetInfogetMCSubtargetInfo () const
virtual const TargetIntrinsicInfogetIntrinsicInfo () const
 If intrinsic information is available, return it. If not, return null. More...
bool requiresStructuredCFG () const
void setRequiresStructuredCFG (bool Value)
Reloc::Model getRelocationModel () const
 Returns the code generation relocation model. More...
CodeModel::Model getCodeModel () const
 Returns the code model. More...
bool isPositionIndependent () const
bool shouldAssumeDSOLocal (const Module &M, const GlobalValue *GV) const
TLSModel::Model getTLSModel (const GlobalValue *GV) const
 Returns the TLS model which should be used for the given global variable. More...
CodeGenOpt::Level getOptLevel () const
 Returns the optimization level: None, Less, Default, or Aggressive. More...
void setOptLevel (CodeGenOpt::Level Level)
 Overrides the optimization level. More...
void setFastISel (bool Enable)
bool getO0WantsFastISel ()
void setO0WantsFastISel (bool Enable)
void setGlobalISel (bool Enable)
bool shouldPrintMachineCode () const
bool getUniqueSectionNames () const
bool getDataSections () const
 Return true if data objects should be emitted into their own section, corresponds to -fdata-sections. More...
bool getFunctionSections () const
 Return true if functions should be emitted into their own section, corresponding to -ffunction-sections. More...
TargetIRAnalysis getTargetIRAnalysis ()
 Get a TargetIRAnalysis appropriate for the target. More...
virtual void adjustPassManager (PassManagerBuilder &)
 Allow the target to modify the pass manager, e.g. More...
virtual bool targetSchedulesPostRAScheduling () const
 True if subtarget inserts the final scheduling pass on its own. More...
void getNameWithPrefix (SmallVectorImpl< char > &Name, const GlobalValue *GV, Mangler &Mang, bool MayAlwaysUsePrivate=false) const
MCSymbolgetSymbol (const GlobalValue *GV) const
virtual bool usesPhysRegsForPEI () const
 True if the target uses physical regs at Prolog/Epilog insertion time. More...
virtual bool useIPRA () const
 True if the target wants to use interprocedural register allocation by default. More...

Protected Member Functions

 LLVMTargetMachine (const Target &T, StringRef DataLayoutString, const Triple &TargetTriple, StringRef CPU, StringRef FS, const TargetOptions &Options, Reloc::Model RM, CodeModel::Model CM, CodeGenOpt::Level OL)
void initAsmInfo ()
- Protected Member Functions inherited from llvm::TargetMachine
 TargetMachine (const Target &T, StringRef DataLayoutString, const Triple &TargetTriple, StringRef CPU, StringRef FS, const TargetOptions &Options)

Additional Inherited Members

- Public Types inherited from llvm::TargetMachine
enum  CodeGenFileType { CGFT_AssemblyFile, CGFT_ObjectFile, CGFT_Null }
 These enums are meant to be passed into addPassesToEmitFile to indicate what type of file to emit, and returned by it to indicate what type of file could actually be made. More...
- Public Attributes inherited from llvm::TargetMachine
const TargetOptions DefaultOptions
TargetOptions Options
- Protected Attributes inherited from llvm::TargetMachine
const TargetTheTarget
 The Target that this machine was created for. More...
const DataLayout DL
 DataLayout for the target: keep ABI type size and alignment. More...
Triple TargetTriple
 Triple string, CPU name, and target feature strings the TargetMachine instance is created with. More...
std::string TargetCPU
std::string TargetFS
Reloc::Model RM = Reloc::Static
CodeModel::Model CMModel = CodeModel::Small
CodeGenOpt::Level OptLevel = CodeGenOpt::Default
const MCAsmInfoAsmInfo
 Contains target specific asm information. More...
const MCRegisterInfoMRI
const MCInstrInfoMII
const MCSubtargetInfoSTI
unsigned RequireStructuredCFG: 1
unsigned O0WantsFastISel: 1

Detailed Description

This class describes a target machine that is implemented with the LLVM target-independent code generator.

Definition at line 282 of file TargetMachine.h.

Constructor & Destructor Documentation

◆ LLVMTargetMachine()

LLVMTargetMachine::LLVMTargetMachine ( const Target T,
StringRef  DataLayoutString,
const Triple TargetTriple,
StringRef  CPU,
StringRef  FS,
const TargetOptions Options,
Reloc::Model  RM,
CodeModel::Model  CM,
CodeGenOpt::Level  OL 

Member Function Documentation

◆ addAsmPrinter()

bool LLVMTargetMachine::addAsmPrinter ( PassManagerBase PM,
raw_pwrite_stream Out,
CodeGenFileType  FileTYpe,
MCContext Context 

◆ addPassesToEmitFile()

bool LLVMTargetMachine::addPassesToEmitFile ( PassManagerBase PM,
raw_pwrite_stream Out,
CodeGenFileType  FileType,
bool  DisableVerify = true,
MachineModuleInfo MMI = nullptr 

Add passes to the specified pass manager to get the specified file emitted.

Typically this will involve several steps of code generation. MMI is an optional parameter that, if set to non-nullptr, will be used to set the MachineModuloInfofor this PM.

Reimplemented from llvm::TargetMachine.

Definition at line 192 of file LLVMTargetMachine.cpp.

References llvm::legacy::PassManagerBase::add(), addAsmPrinter(), addPassesToGenerateCode(), Context, and llvm::createFreeMachineFunctionPass().

◆ addPassesToEmitMC()

bool LLVMTargetMachine::addPassesToEmitMC ( PassManagerBase PM,
MCContext *&  Ctx,
raw_pwrite_stream Out,
bool  DisableVerify = true 

◆ createPassConfig()

TargetPassConfig * LLVMTargetMachine::createPassConfig ( PassManagerBase PM)

Create a pass configuration object to be used by addPassToEmitX methods for generating a pipeline of CodeGen passes.

createPassConfig - Create a pass configuration object to be used by addPassToEmitX methods for generating a pipeline of CodeGen passes.

Targets may override this to extend TargetPassConfig.

Reimplemented in llvm::GCNTargetMachine, llvm::R600TargetMachine, llvm::MipsTargetMachine, llvm::ARMBaseTargetMachine, llvm::NVPTXTargetMachine, llvm::X86TargetMachine, llvm::PPCTargetMachine, llvm::LanaiTargetMachine, llvm::SystemZTargetMachine, llvm::AArch64TargetMachine, llvm::AVRTargetMachine, llvm::XCoreTargetMachine, llvm::ARCTargetMachine, llvm::HexagonTargetMachine, llvm::Nios2TargetMachine, llvm::MSP430TargetMachine, llvm::WebAssemblyTargetMachine, llvm::SparcTargetMachine, llvm::RISCVTargetMachine, and llvm::BPFTargetMachine.

Definition at line 401 of file TargetPassConfig.cpp.

References llvm::TargetPassConfig::TargetPassConfig().

Referenced by addPassesToGenerateCode().

◆ getTargetTransformInfo()

TargetTransformInfo LLVMTargetMachine::getTargetTransformInfo ( const Function F)

◆ initAsmInfo()

void LLVMTargetMachine::initAsmInfo ( )

Definition at line 41 of file LLVMTargetMachine.cpp.

References llvm::TargetMachine::AsmInfo, assert(), llvm::TargetOptions::CompressDebugSections, llvm::Target::createMCAsmInfo(), llvm::Target::createMCInstrInfo(), llvm::Target::createMCRegInfo(), llvm::Target::createMCSubtargetInfo(), llvm::TargetOptions::DisableIntegratedAS, llvm::TargetOptions::ExceptionModel, llvm::TargetMachine::getTargetCPU(), llvm::TargetMachine::getTargetFeatureString(), llvm::TargetMachine::getTargetTriple(), llvm::TargetOptions::MCOptions, llvm::TargetMachine::MII, llvm::TargetMachine::MRI, llvm::None, llvm::TargetMachine::Options, llvm::MCTargetOptions::PreserveAsmComments, llvm::TargetOptions::RelaxELFRelocations, llvm::MCAsmInfo::setCompressDebugSections(), llvm::MCAsmInfo::setExceptionsType(), llvm::MCAsmInfo::setPreserveAsmComments(), llvm::MCAsmInfo::setRelaxELFRelocations(), llvm::MCAsmInfo::setUseIntegratedAssembler(), llvm::TargetMachine::STI, and llvm::TargetMachine::TheTarget.

Referenced by llvm::AArch64TargetMachine::AArch64TargetMachine(), llvm::AMDGPUTargetMachine::AMDGPUTargetMachine(), llvm::ARCTargetMachine::ARCTargetMachine(), llvm::ARMBaseTargetMachine::ARMBaseTargetMachine(), llvm::AVRTargetMachine::AVRTargetMachine(), llvm::BPFTargetMachine::BPFTargetMachine(), llvm::HexagonTargetMachine::HexagonTargetMachine(), llvm::LanaiTargetMachine::LanaiTargetMachine(), llvm::MipsTargetMachine::MipsTargetMachine(), llvm::MSP430TargetMachine::MSP430TargetMachine(), llvm::Nios2TargetMachine::Nios2TargetMachine(), llvm::NVPTXTargetMachine::NVPTXTargetMachine(), llvm::PPCTargetMachine::PPCTargetMachine(), llvm::RISCVTargetMachine::RISCVTargetMachine(), llvm::SparcTargetMachine::SparcTargetMachine(), llvm::SystemZTargetMachine::SystemZTargetMachine(), llvm::WebAssemblyTargetMachine::WebAssemblyTargetMachine(), llvm::X86TargetMachine::X86TargetMachine(), and llvm::XCoreTargetMachine::XCoreTargetMachine().

◆ isMachineVerifierClean()

virtual bool llvm::LLVMTargetMachine::isMachineVerifierClean ( ) const

Returns true if the target is expected to pass all machine verifier checks.

This is a stopgap measure to fix targets one by one. We will remove this at some point and always enable the verifier when EXPENSIVE_CHECKS is enabled.

Reimplemented in llvm::R600TargetMachine, llvm::MipsTargetMachine, llvm::NVPTXTargetMachine, llvm::PPCTargetMachine, llvm::X86TargetMachine, llvm::LanaiTargetMachine, llvm::AVRTargetMachine, and llvm::SparcTargetMachine.

Definition at line 322 of file TargetMachine.h.

References Context.

Referenced by llvm::TargetPassConfig::addVerifyPass().

The documentation for this class was generated from the following files: