llvm::orc::JITTargetMachineBuilder Class Reference

A utility class for building TargetMachines for JITs. More...

#include "llvm/ExecutionEngine/Orc/JITTargetMachineBuilder.h"

Public Member Functions
	JITTargetMachineBuilder (Triple TT)
	Create a JITTargetMachineBuilder based on the given triple. More...
Expected< std::unique_ptr< TargetMachine > >	createTargetMachine ()
	Create a TargetMachine. More...
Expected< DataLayout >	getDefaultDataLayoutForTarget ()
	Get the default DataLayout for the target. More...
JITTargetMachineBuilder &	setCPU (std::string CPU)
	Set the CPU string. More...
JITTargetMachineBuilder &	setRelocationModel (Optional< Reloc::Model > RM)
	Set the relocation model. More...
JITTargetMachineBuilder &	setCodeModel (Optional< CodeModel::Model > CM)
	Set the code model. More...
JITTargetMachineBuilder &	setCodeGenOptLevel (CodeGenOpt::Level OptLevel)
	Set the LLVM CodeGen optimization level. More...
JITTargetMachineBuilder &	addFeatures (const std::vector< std::string > &FeatureVec)
	Add subtarget features. More...
SubtargetFeatures &	getFeatures ()
	Access subtarget features. More...
const SubtargetFeatures &	getFeatures () const
	Access subtarget features. More...
TargetOptions &	getOptions ()
	Access TargetOptions. More...
const TargetOptions &	getOptions () const
	Access TargetOptions. More...
Triple &	getTargetTriple ()
	Access Triple. More...
const Triple &	getTargetTriple () const
	Access Triple. More...

Static Public Member Functions
static Expected< JITTargetMachineBuilder >	detectHost ()
	Create a JITTargetMachineBuilder for the host system. More...

Detailed Description

A utility class for building TargetMachines for JITs.

Definition at line 32 of file JITTargetMachineBuilder.h.

Constructor & Destructor Documentation

JITTargetMachineBuilder()

llvm::orc::JITTargetMachineBuilder::JITTargetMachineBuilder

(

Triple

TT

)

Create a JITTargetMachineBuilder based on the given triple.

Note: TargetOptions is default-constructed, then EmulatedTLS and ExplicitEmulatedTLS are set to true. If EmulatedTLS is not required, these values should be reset before calling createTargetMachine.

Definition at line 17 of file JITTargetMachineBuilder.cpp.

References llvm::TargetOptions::EmulatedTLS, and llvm::TargetOptions::ExplicitEmulatedTLS.

Referenced by detectHost().

Member Function Documentation

addFeatures()

JITTargetMachineBuilder & llvm::orc::JITTargetMachineBuilder::addFeatures

(

const std::vector< std::string > &

FeatureVec

)

Add subtarget features.

Definition at line 47 of file JITTargetMachineBuilder.cpp.

References llvm::SubtargetFeatures::AddFeature(), and F().

Referenced by setCodeGenOptLevel().

createTargetMachine()

Expected< std::unique_ptr< TargetMachine > > llvm::orc::JITTargetMachineBuilder::createTargetMachine

(

)

Create a TargetMachine.

This operation will fail if the requested target is not registered, in which case see llvm/Support/TargetSelect.h. To JIT IR the Target and the target's AsmPrinter must both be registered. To JIT assembly (including inline and module level assembly) the target's AsmParser must also be registered.

Definition at line 30 of file JITTargetMachineBuilder.cpp.

References llvm::SubtargetFeatures::getString(), llvm::Triple::getTriple(), llvm::inconvertibleErrorCode(), llvm::TargetRegistry::lookupTarget(), and llvm::SystemZISD::TM.

Referenced by llvm::orc::LLJIT::Create(), llvm::orc::LLLazyJIT::Create(), and getDefaultDataLayoutForTarget().

detectHost()

Expected< JITTargetMachineBuilder > llvm::orc::JITTargetMachineBuilder::detectHost ( )

static

Create a JITTargetMachineBuilder for the host system.

Note: TargetOptions is default-constructed, then EmulatedTLS and ExplicitEmulatedTLS are set to true. If EmulatedTLS is not required, these values should be reset before calling createTargetMachine.

Definition at line 23 of file JITTargetMachineBuilder.cpp.

References llvm::sys::getProcessTriple(), and JITTargetMachineBuilder().

getDefaultDataLayoutForTarget()

Expected<DataLayout> llvm::orc::JITTargetMachineBuilder::getDefaultDataLayoutForTarget ( )

inline

Get the default DataLayout for the target.

Note: This is reasonably expensive, as it creates a temporary TargetMachine instance under the hood. It is only suitable for use during JIT setup.

Definition at line 64 of file JITTargetMachineBuilder.h.

References createTargetMachine(), and llvm::SystemZISD::TM.

getFeatures() [1/2]

SubtargetFeatures& llvm::orc::JITTargetMachineBuilder::getFeatures ( )

inline

Access subtarget features.

Definition at line 100 of file JITTargetMachineBuilder.h.

getFeatures() [2/2]

const SubtargetFeatures& llvm::orc::JITTargetMachineBuilder::getFeatures ( ) const

inline

Access subtarget features.

Definition at line 103 of file JITTargetMachineBuilder.h.

getOptions() [1/2]

TargetOptions& llvm::orc::JITTargetMachineBuilder::getOptions ( )

inline

Access TargetOptions.

Definition at line 106 of file JITTargetMachineBuilder.h.

getOptions() [2/2]

const TargetOptions& llvm::orc::JITTargetMachineBuilder::getOptions ( ) const

inline

Access TargetOptions.

Definition at line 109 of file JITTargetMachineBuilder.h.

getTargetTriple() [1/2]

Triple& llvm::orc::JITTargetMachineBuilder::getTargetTriple ( )

inline

Access Triple.

Definition at line 112 of file JITTargetMachineBuilder.h.

Referenced by llvm::orc::LLLazyJIT::Create().

getTargetTriple() [2/2]

const Triple& llvm::orc::JITTargetMachineBuilder::getTargetTriple ( ) const

inline

Access Triple.

Definition at line 115 of file JITTargetMachineBuilder.h.

References llvm::CodeGenOpt::None.

setCodeGenOptLevel()

JITTargetMachineBuilder& llvm::orc::JITTargetMachineBuilder::setCodeGenOptLevel ( CodeGenOpt::Level  OptLevel )

inline

Set the LLVM CodeGen optimization level.

Definition at line 90 of file JITTargetMachineBuilder.h.

References addFeatures().

setCodeModel()

JITTargetMachineBuilder& llvm::orc::JITTargetMachineBuilder::setCodeModel ( Optional< CodeModel::Model >  CM )

inline

Set the code model.

Definition at line 84 of file JITTargetMachineBuilder.h.

setCPU()

JITTargetMachineBuilder& llvm::orc::JITTargetMachineBuilder::setCPU ( std::string  CPU )

inline

Set the CPU string.

Definition at line 72 of file JITTargetMachineBuilder.h.

setRelocationModel()

JITTargetMachineBuilder& llvm::orc::JITTargetMachineBuilder::setRelocationModel ( Optional< Reloc::Model >  RM )

inline

Set the relocation model.

Definition at line 78 of file JITTargetMachineBuilder.h.

---

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

• include/llvm/ExecutionEngine/Orc/JITTargetMachineBuilder.h
• lib/ExecutionEngine/Orc/JITTargetMachineBuilder.cpp