#ifndef LLVM_EXECUTIONENGINE_EXECUTIONENGINE_H
#define LLVM_EXECUTIONENGINE_EXECUTIONENGINE_H
+#include "RuntimeDyld.h"
#include "llvm-c/ExecutionEngine.h"
#include "llvm/ADT/SmallVector.h"
#include "llvm/ADT/StringRef.h"
-#include "llvm/ADT/ValueMap.h"
+#include "llvm/IR/Module.h"
+#include "llvm/IR/ValueHandle.h"
+#include "llvm/IR/ValueMap.h"
#include "llvm/MC/MCCodeGenInfo.h"
+#include "llvm/Object/Binary.h"
#include "llvm/Support/ErrorHandling.h"
#include "llvm/Support/Mutex.h"
-#include "llvm/Support/ValueHandle.h"
#include "llvm/Target/TargetMachine.h"
#include "llvm/Target/TargetOptions.h"
#include <map>
#include <string>
#include <vector>
+#include <functional>
namespace llvm {
class GlobalVariable;
class GlobalValue;
class JITEventListener;
-class JITMemoryManager;
class MachineCodeInfo;
-class Module;
+class MCJITMemoryManager;
class MutexGuard;
class ObjectCache;
class RTDyldMemoryManager;
class Triple;
class Type;
+namespace object {
+ class Archive;
+ class ObjectFile;
+}
+
/// \brief Helper class for helping synchronize access to the global address map
-/// table.
+/// table. Access to this class should be serialized under a mutex.
class ExecutionEngineState {
public:
- struct AddressMapConfig : public ValueMapConfig<const GlobalValue*> {
- typedef ExecutionEngineState *ExtraData;
- static sys::Mutex *getMutex(ExecutionEngineState *EES);
- static void onDelete(ExecutionEngineState *EES, const GlobalValue *Old);
- static void onRAUW(ExecutionEngineState *, const GlobalValue *,
- const GlobalValue *);
- };
-
- typedef ValueMap<const GlobalValue *, void *, AddressMapConfig>
- GlobalAddressMapTy;
+ typedef StringMap<uint64_t> GlobalAddressMapTy;
private:
- ExecutionEngine &EE;
- /// GlobalAddressMap - A mapping between LLVM global values and their
- /// actualized version...
+ /// GlobalAddressMap - A mapping between LLVM global symbol names values and
+ /// their actualized version...
GlobalAddressMapTy GlobalAddressMap;
/// GlobalAddressReverseMap - This is the reverse mapping of GlobalAddressMap,
/// used to convert raw addresses into the LLVM global value that is emitted
/// at the address. This map is not computed unless getGlobalValueAtAddress
/// is called at some point.
- std::map<void *, AssertingVH<const GlobalValue> > GlobalAddressReverseMap;
+ std::map<uint64_t, std::string> GlobalAddressReverseMap;
public:
- ExecutionEngineState(ExecutionEngine &EE);
- GlobalAddressMapTy &getGlobalAddressMap(const MutexGuard &) {
+ GlobalAddressMapTy &getGlobalAddressMap() {
return GlobalAddressMap;
}
- std::map<void*, AssertingVH<const GlobalValue> > &
- getGlobalAddressReverseMap(const MutexGuard &) {
+ std::map<uint64_t, std::string> &getGlobalAddressReverseMap() {
return GlobalAddressReverseMap;
}
/// \brief Erase an entry from the mapping table.
///
/// \returns The address that \p ToUnmap was happed to.
- void *RemoveMapping(const MutexGuard &, const GlobalValue *ToUnmap);
+ uint64_t RemoveMapping(StringRef Name);
};
+using FunctionCreator = std::function<void *(const std::string &)>;
+
/// \brief Abstract interface for implementation execution of LLVM modules,
/// designed to support both interpreter and just-in-time (JIT) compiler
/// implementations.
ExecutionEngineState EEState;
/// The target data for the platform for which execution is being performed.
- const DataLayout *TD;
+ const DataLayout *DL;
/// Whether lazy JIT compilation is enabled.
bool CompilingLazily;
/// using dlsym).
bool SymbolSearchingDisabled;
+ /// Whether the JIT should verify IR modules during compilation.
+ bool VerifyModules;
+
friend class EngineBuilder; // To allow access to JITCtor and InterpCtor.
protected:
/// The list of Modules that we are JIT'ing from. We use a SmallVector to
/// optimize for the case where there is only one module.
- SmallVector<Module*, 1> Modules;
+ SmallVector<std::unique_ptr<Module>, 1> Modules;
- void setDataLayout(const DataLayout *td) { TD = td; }
+ void setDataLayout(const DataLayout *Val) { DL = Val; }
/// getMemoryforGV - Allocate memory for a global variable.
virtual char *getMemoryForGV(const GlobalVariable *GV);
- // To avoid having libexecutionengine depend on the JIT and interpreter
- // libraries, the execution engine implementations set these functions to ctor
- // pointers at startup time if they are linked in.
- static ExecutionEngine *(*JITCtor)(
- Module *M,
- std::string *ErrorStr,
- JITMemoryManager *JMM,
- bool GVsWithCode,
- TargetMachine *TM);
static ExecutionEngine *(*MCJITCtor)(
- Module *M,
- std::string *ErrorStr,
- RTDyldMemoryManager *MCJMM,
- bool GVsWithCode,
- TargetMachine *TM);
- static ExecutionEngine *(*InterpCtor)(Module *M, std::string *ErrorStr);
+ std::unique_ptr<Module> M,
+ std::string *ErrorStr,
+ std::shared_ptr<MCJITMemoryManager> MM,
+ std::shared_ptr<RuntimeDyld::SymbolResolver> SR,
+ std::unique_ptr<TargetMachine> TM);
+
+ static ExecutionEngine *(*OrcMCJITReplacementCtor)(
+ std::string *ErrorStr,
+ std::shared_ptr<MCJITMemoryManager> MM,
+ std::shared_ptr<RuntimeDyld::SymbolResolver> SR,
+ std::unique_ptr<TargetMachine> TM);
+
+ static ExecutionEngine *(*InterpCtor)(std::unique_ptr<Module> M,
+ std::string *ErrorStr);
/// LazyFunctionCreator - If an unknown function is needed, this function
/// pointer is invoked to create it. If this returns null, the JIT will
/// abort.
- void *(*LazyFunctionCreator)(const std::string &);
+ FunctionCreator LazyFunctionCreator;
+
+ /// getMangledName - Get mangled name.
+ std::string getMangledName(const GlobalValue *GV);
public:
- /// lock - This lock protects the ExecutionEngine, MCJIT, JIT, JITResolver and
- /// JITEmitter classes. It must be held while changing the internal state of
- /// any of those classes.
+ /// lock - This lock protects the ExecutionEngine and MCJIT classes. It must
+ /// be held while changing the internal state of any of those classes.
sys::Mutex lock;
//===--------------------------------------------------------------------===//
virtual ~ExecutionEngine();
- /// create - This is the factory method for creating an execution engine which
- /// is appropriate for the current machine. This takes ownership of the
- /// module.
+ /// Add a Module to the list of modules that we can JIT from.
+ virtual void addModule(std::unique_ptr<Module> M) {
+ Modules.push_back(std::move(M));
+ }
+
+ /// addObjectFile - Add an ObjectFile to the execution engine.
///
- /// \param GVsWithCode - Allocating globals with code breaks
- /// freeMachineCodeForFunction and is probably unsafe and bad for performance.
- /// However, we have clients who depend on this behavior, so we must support
- /// it. Eventually, when we're willing to break some backwards compatibility,
- /// this flag should be flipped to false, so that by default
- /// freeMachineCodeForFunction works.
- static ExecutionEngine *create(Module *M,
- bool ForceInterpreter = false,
- std::string *ErrorStr = 0,
- CodeGenOpt::Level OptLevel =
- CodeGenOpt::Default,
- bool GVsWithCode = true);
-
- /// createJIT - This is the factory method for creating a JIT for the current
- /// machine, it does not fall back to the interpreter. This takes ownership
- /// of the Module and JITMemoryManager if successful.
+ /// This method is only supported by MCJIT. MCJIT will immediately load the
+ /// object into memory and adds its symbols to the list used to resolve
+ /// external symbols while preparing other objects for execution.
///
- /// Clients should make sure to initialize targets prior to calling this
- /// function.
- static ExecutionEngine *createJIT(Module *M,
- std::string *ErrorStr = 0,
- JITMemoryManager *JMM = 0,
- CodeGenOpt::Level OptLevel =
- CodeGenOpt::Default,
- bool GVsWithCode = true,
- Reloc::Model RM = Reloc::Default,
- CodeModel::Model CMM =
- CodeModel::JITDefault);
-
- /// addModule - Add a Module to the list of modules that we can JIT from.
- /// Note that this takes ownership of the Module: when the ExecutionEngine is
- /// destroyed, it destroys the Module as well.
- virtual void addModule(Module *M) {
- Modules.push_back(M);
- }
+ /// Objects added using this function will not be made executable until
+ /// needed by another object.
+ ///
+ /// MCJIT will take ownership of the ObjectFile.
+ virtual void addObjectFile(std::unique_ptr<object::ObjectFile> O);
+ virtual void addObjectFile(object::OwningBinary<object::ObjectFile> O);
+
+ /// addArchive - Add an Archive to the execution engine.
+ ///
+ /// This method is only supported by MCJIT. MCJIT will use the archive to
+ /// resolve external symbols in objects it is loading. If a symbol is found
+ /// in the Archive the contained object file will be extracted (in memory)
+ /// and loaded for possible execution.
+ virtual void addArchive(object::OwningBinary<object::Archive> A);
//===--------------------------------------------------------------------===//
- const DataLayout *getDataLayout() const { return TD; }
+ const DataLayout *getDataLayout() const { return DL; }
/// removeModule - Remove a Module from the list of modules. Returns true if
/// M is found.
virtual bool removeModule(Module *M);
- /// FindFunctionNamed - Search all of the active modules to find the one that
+ /// FindFunctionNamed - Search all of the active modules to find the function that
/// defines FnName. This is very slow operation and shouldn't be used for
/// general code.
virtual Function *FindFunctionNamed(const char *FnName);
+ /// FindGlobalVariableNamed - Search all of the active modules to find the global variable
+ /// that defines Name. This is very slow operation and shouldn't be used for
+ /// general code.
+ virtual GlobalVariable *FindGlobalVariableNamed(const char *Name, bool AllowInternal = false);
+
/// runFunction - Execute the specified function with the specified arguments,
/// and return the result.
virtual GenericValue runFunction(Function *F,
- const std::vector<GenericValue> &ArgValues) = 0;
+ ArrayRef<GenericValue> ArgValues) = 0;
/// getPointerToNamedFunction - This method returns the address of the
/// specified function by using the dlsym function call. As such it is only
/// it prints a message to stderr and aborts.
///
/// This function is deprecated for the MCJIT execution engine.
- ///
- /// FIXME: the JIT and MCJIT interfaces should be disentangled or united
- /// again, if possible.
- ///
- virtual void *getPointerToNamedFunction(const std::string &Name,
+ virtual void *getPointerToNamedFunction(StringRef Name,
bool AbortOnFailure = true) = 0;
/// mapSectionAddress - map a section to its target address space value.
/// Map the address of a JIT section as returned from the memory manager
/// to the address in the target process as the running code will see it.
/// This is the address which will be used for relocation resolution.
- virtual void mapSectionAddress(const void *LocalAddress, uint64_t TargetAddress) {
+ virtual void mapSectionAddress(const void *LocalAddress,
+ uint64_t TargetAddress) {
llvm_unreachable("Re-mapping of section addresses not supported with this "
"EE!");
}
- /// generateCodeForModule - Run code generationen for the specified module and
+ /// generateCodeForModule - Run code generation for the specified module and
/// load it into memory.
///
/// When this function has completed, all code and data for the specified
/// locally can use the getFunctionAddress call, which will generate code
/// and apply final preparations all in one step.
///
- /// This method has no effect for the legacy JIT engine or the interpeter.
+ /// This method has no effect for the interpeter.
virtual void generateCodeForModule(Module *M) {}
/// finalizeObject - ensure the module is fully processed and is usable.
/// object usable for execution. It should be called after sections within an
/// object have been relocated using mapSectionAddress. When this method is
/// called the MCJIT execution engine will reapply relocations for a loaded
- /// object. This method has no effect for the legacy JIT engine or the
- /// interpeter.
+ /// object. This method has no effect for the interpeter.
virtual void finalizeObject() {}
/// runStaticConstructorsDestructors - This method is used to execute all of
/// \param isDtors - Run the destructors instead of constructors.
virtual void runStaticConstructorsDestructors(bool isDtors);
- /// runStaticConstructorsDestructors - This method is used to execute all of
- /// the static constructors or destructors for a particular module.
+ /// This method is used to execute all of the static constructors or
+ /// destructors for a particular module.
///
/// \param isDtors - Run the destructors instead of constructors.
- void runStaticConstructorsDestructors(Module *module, bool isDtors);
+ void runStaticConstructorsDestructors(Module &module, bool isDtors);
/// runFunctionAsMain - This is a helper function which wraps runFunction to
/// existing data in memory. Mappings are automatically removed when their
/// GlobalValue is destroyed.
void addGlobalMapping(const GlobalValue *GV, void *Addr);
+ void addGlobalMapping(StringRef Name, uint64_t Addr);
/// clearAllGlobalMappings - Clear all global mappings and start over again,
/// for use in dynamic compilation scenarios to move globals.
/// address. This updates both maps as required. If "Addr" is null, the
/// entry for the global is removed from the mappings. This returns the old
/// value of the pointer, or null if it was not in the map.
- void *updateGlobalMapping(const GlobalValue *GV, void *Addr);
+ uint64_t updateGlobalMapping(const GlobalValue *GV, void *Addr);
+ uint64_t updateGlobalMapping(StringRef Name, uint64_t Addr);
+
+ /// getAddressToGlobalIfAvailable - This returns the address of the specified
+ /// global symbol.
+ uint64_t getAddressToGlobalIfAvailable(StringRef S);
/// getPointerToGlobalIfAvailable - This returns the address of the specified
/// global value if it is has already been codegen'd, otherwise it returns
/// null.
- ///
- /// This function is deprecated for the MCJIT execution engine. It doesn't
- /// seem to be needed in that case, but an equivalent can be added if it is.
+ void *getPointerToGlobalIfAvailable(StringRef S);
void *getPointerToGlobalIfAvailable(const GlobalValue *GV);
/// getPointerToGlobal - This returns the address of the specified global
/// getFunctionAddress instead.
virtual void *getPointerToFunction(Function *F) = 0;
- /// getPointerToBasicBlock - The different EE's represent basic blocks in
- /// different ways. Return the representation for a blockaddress of the
- /// specified block.
- ///
- /// This function will not be implemented for the MCJIT execution engine.
- virtual void *getPointerToBasicBlock(BasicBlock *BB) = 0;
-
/// getPointerToFunctionOrStub - If the specified function has been
/// code-gen'd, return a pointer to the function. If not, compile it, or use
/// a stub to implement lazy compilation if available. See
/// getGlobalValueAddress - Return the address of the specified global
/// value. This may involve code generation.
///
- /// This function should not be called with the JIT or interpreter engines.
+ /// This function should not be called with the interpreter engine.
virtual uint64_t getGlobalValueAddress(const std::string &Name) {
- // Default implementation for JIT and interpreter. MCJIT will override this.
+ // Default implementation for the interpreter. MCJIT will override this.
// JIT and interpreter clients should use getPointerToGlobal instead.
return 0;
}
/// getFunctionAddress - Return the address of the specified function.
/// This may involve code generation.
virtual uint64_t getFunctionAddress(const std::string &Name) {
- // Default implementation for JIT and interpreter. MCJIT will override this.
- // JIT and interpreter clients should use getPointerToFunction instead.
+ // Default implementation for the interpreter. MCJIT will override this.
+ // Interpreter clients should use getPointerToFunction instead.
return 0;
}
- // The JIT overrides a version that actually does this.
- virtual void runJITOnFunction(Function *, MachineCodeInfo * = 0) { }
-
/// getGlobalValueAtAddress - Return the LLVM global value object that starts
/// at the specified address.
///
void InitializeMemory(const Constant *Init, void *Addr);
- /// recompileAndRelinkFunction - This method is used to force a function which
- /// has already been compiled to be compiled again, possibly after it has been
- /// modified. Then the entry to the old copy is overwritten with a branch to
- /// the new copy. If there was no old copy, this acts just like
- /// VM::getPointerToFunction().
- virtual void *recompileAndRelinkFunction(Function *F) = 0;
-
- /// freeMachineCodeForFunction - Release memory in the ExecutionEngine
- /// corresponding to the machine code emitted to execute this function, useful
- /// for garbage-collecting generated code.
- virtual void freeMachineCodeForFunction(Function *F) = 0;
-
/// getOrEmitGlobalVariable - Return the address of the specified global
/// variable, possibly emitting it to memory if needed. This is used by the
/// Emitter.
virtual void UnregisterJITEventListener(JITEventListener *) {}
/// Sets the pre-compiled object cache. The ownership of the ObjectCache is
- /// not changed. Supported by MCJIT but not JIT.
+ /// not changed. Supported by MCJIT but not the interpreter.
virtual void setObjectCache(ObjectCache *) {
llvm_unreachable("No support for an object cache");
}
+ /// setProcessAllSections (MCJIT Only): By default, only sections that are
+ /// "required for execution" are passed to the RTDyldMemoryManager, and other
+ /// sections are discarded. Passing 'true' to this method will cause
+ /// RuntimeDyld to pass all sections to its RTDyldMemoryManager regardless
+ /// of whether they are "required to execute" in the usual sense.
+ ///
+ /// Rationale: Some MCJIT clients want to be able to inspect metadata
+ /// sections (e.g. Dwarf, Stack-maps) to enable functionality or analyze
+ /// performance. Passing these sections to the memory manager allows the
+ /// client to make policy about the relevant sections, rather than having
+ /// MCJIT do it.
+ virtual void setProcessAllSections(bool ProcessAllSections) {
+ llvm_unreachable("No support for ProcessAllSections option");
+ }
+
+ /// Return the target machine (if available).
+ virtual TargetMachine *getTargetMachine() { return nullptr; }
+
/// DisableLazyCompilation - When lazy compilation is off (the default), the
/// JIT will eagerly compile every function reachable from the argument to
/// getPointerToFunction. If lazy compilation is turned on, the JIT will only
bool isCompilingLazily() const {
return CompilingLazily;
}
- // Deprecated in favor of isCompilingLazily (to reduce double-negatives).
- // Remove this in LLVM 2.8.
- bool isLazyCompilationDisabled() const {
- return !CompilingLazily;
- }
/// DisableGVCompilation - If called, the JIT will abort if it's asked to
/// allocate space and populate a GlobalVariable that is not internal to
return SymbolSearchingDisabled;
}
+ /// Enable/Disable IR module verification.
+ ///
+ /// Note: Module verification is enabled by default in Debug builds, and
+ /// disabled by default in Release. Use this method to override the default.
+ void setVerifyModules(bool Verify) {
+ VerifyModules = Verify;
+ }
+ bool getVerifyModules() const {
+ return VerifyModules;
+ }
+
/// InstallLazyFunctionCreator - If an unknown function is needed, the
/// specified function pointer is invoked to create it. If it returns null,
/// the JIT will abort.
- void InstallLazyFunctionCreator(void* (*P)(const std::string &)) {
- LazyFunctionCreator = P;
+ void InstallLazyFunctionCreator(FunctionCreator C) {
+ LazyFunctionCreator = C;
}
protected:
- explicit ExecutionEngine(Module *M);
+ ExecutionEngine() {}
+ explicit ExecutionEngine(std::unique_ptr<Module> M);
void emitGlobals();
const static Kind Either = (Kind)(JIT | Interpreter);
}
-/// EngineBuilder - Builder class for ExecutionEngines. Use this by
-/// stack-allocating a builder, chaining the various set* methods, and
-/// terminating it with a .create() call.
+/// Builder class for ExecutionEngines. Use this by stack-allocating a builder,
+/// chaining the various set* methods, and terminating it with a .create()
+/// call.
class EngineBuilder {
private:
- Module *M;
+ std::unique_ptr<Module> M;
EngineKind::Kind WhichEngine;
std::string *ErrorStr;
CodeGenOpt::Level OptLevel;
- RTDyldMemoryManager *MCJMM;
- JITMemoryManager *JMM;
- bool AllocateGVsWithCode;
+ std::shared_ptr<MCJITMemoryManager> MemMgr;
+ std::shared_ptr<RuntimeDyld::SymbolResolver> Resolver;
TargetOptions Options;
Reloc::Model RelocModel;
CodeModel::Model CMModel;
std::string MArch;
std::string MCPU;
SmallVector<std::string, 4> MAttrs;
- bool UseMCJIT;
-
- /// InitEngine - Does the common initialization of default options.
- void InitEngine() {
- WhichEngine = EngineKind::Either;
- ErrorStr = NULL;
- OptLevel = CodeGenOpt::Default;
- MCJMM = NULL;
- JMM = NULL;
- Options = TargetOptions();
- AllocateGVsWithCode = false;
- RelocModel = Reloc::Default;
- CMModel = CodeModel::JITDefault;
- UseMCJIT = false;
- }
+ bool VerifyModules;
+ bool UseOrcMCJITReplacement;
public:
- /// EngineBuilder - Constructor for EngineBuilder. If create() is called and
- /// is successful, the created engine takes ownership of the module.
- EngineBuilder(Module *m) : M(m) {
- InitEngine();
- }
+ /// Default constructor for EngineBuilder.
+ EngineBuilder();
+
+ /// Constructor for EngineBuilder.
+ EngineBuilder(std::unique_ptr<Module> M);
+
+ // Out-of-line since we don't have the def'n of RTDyldMemoryManager here.
+ ~EngineBuilder();
/// setEngineKind - Controls whether the user wants the interpreter, the JIT,
/// or whichever engine works. This option defaults to EngineKind::Either.
WhichEngine = w;
return *this;
}
-
+
/// setMCJITMemoryManager - Sets the MCJIT memory manager to use. This allows
/// clients to customize their memory allocation policies for the MCJIT. This
/// is only appropriate for the MCJIT; setting this and configuring the builder
/// to create anything other than MCJIT will cause a runtime error. If create()
/// is called and is successful, the created engine takes ownership of the
- /// memory manager. This option defaults to NULL. Using this option nullifies
- /// the setJITMemoryManager() option.
- EngineBuilder &setMCJITMemoryManager(RTDyldMemoryManager *mcjmm) {
- MCJMM = mcjmm;
- JMM = NULL;
- return *this;
- }
+ /// memory manager. This option defaults to NULL.
+ EngineBuilder &setMCJITMemoryManager(std::unique_ptr<RTDyldMemoryManager> mcjmm);
- /// setJITMemoryManager - Sets the JIT memory manager to use. This allows
- /// clients to customize their memory allocation policies. This is only
- /// appropriate for either JIT or MCJIT; setting this and configuring the
- /// builder to create an interpreter will cause a runtime error. If create()
- /// is called and is successful, the created engine takes ownership of the
- /// memory manager. This option defaults to NULL. This option overrides
- /// setMCJITMemoryManager() as well.
- EngineBuilder &setJITMemoryManager(JITMemoryManager *jmm) {
- MCJMM = NULL;
- JMM = jmm;
- return *this;
- }
+ EngineBuilder&
+ setMemoryManager(std::unique_ptr<MCJITMemoryManager> MM);
+
+ EngineBuilder&
+ setSymbolResolver(std::unique_ptr<RuntimeDyld::SymbolResolver> SR);
/// setErrorStr - Set the error string to write to on error. This option
/// defaults to NULL.
return *this;
}
- /// setAllocateGVsWithCode - Sets whether global values should be allocated
- /// into the same buffer as code. For most applications this should be set
- /// to false. Allocating globals with code breaks freeMachineCodeForFunction
- /// and is probably unsafe and bad for performance. However, we have clients
- /// who depend on this behavior, so we must support it. This option defaults
- /// to false so that users of the new API can safely use the new memory
- /// manager and free machine code.
- EngineBuilder &setAllocateGVsWithCode(bool a) {
- AllocateGVsWithCode = a;
- return *this;
- }
-
/// setMArch - Override the architecture set by the Module's triple.
EngineBuilder &setMArch(StringRef march) {
MArch.assign(march.begin(), march.end());
return *this;
}
- /// setUseMCJIT - Set whether the MC-JIT implementation should be used
- /// (experimental).
- EngineBuilder &setUseMCJIT(bool Value) {
- UseMCJIT = Value;
+ /// setVerifyModules - Set whether the JIT implementation should verify
+ /// IR modules during compilation.
+ EngineBuilder &setVerifyModules(bool Verify) {
+ VerifyModules = Verify;
return *this;
}
return *this;
}
+ // \brief Use OrcMCJITReplacement instead of MCJIT. Off by default.
+ void setUseOrcMCJITReplacement(bool UseOrcMCJITReplacement) {
+ this->UseOrcMCJITReplacement = UseOrcMCJITReplacement;
+ }
+
TargetMachine *selectTarget();
/// selectTarget - Pick a target either via -march or by guessing the native
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