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Diffstat (limited to 'lib/ExecutionEngine/JIT/JIT.h')
| -rw-r--r-- | lib/ExecutionEngine/JIT/JIT.h | 229 |
1 files changed, 0 insertions, 229 deletions
diff --git a/lib/ExecutionEngine/JIT/JIT.h b/lib/ExecutionEngine/JIT/JIT.h deleted file mode 100644 index 69a7c36..0000000 --- a/lib/ExecutionEngine/JIT/JIT.h +++ /dev/null @@ -1,229 +0,0 @@ -//===-- JIT.h - Class definition for the JIT --------------------*- C++ -*-===// -// -// The LLVM Compiler Infrastructure -// -// This file is distributed under the University of Illinois Open Source -// License. See LICENSE.TXT for details. -// -//===----------------------------------------------------------------------===// -// -// This file defines the top-level JIT data structure. -// -//===----------------------------------------------------------------------===// - -#ifndef JIT_H -#define JIT_H - -#include "llvm/ExecutionEngine/ExecutionEngine.h" -#include "llvm/IR/ValueHandle.h" -#include "llvm/PassManager.h" - -namespace llvm { - -class Function; -struct JITEvent_EmittedFunctionDetails; -class MachineCodeEmitter; -class MachineCodeInfo; -class TargetJITInfo; -class TargetMachine; - -class JITState { -private: - FunctionPassManager PM; // Passes to compile a function - Module *M; // Module used to create the PM - - /// PendingFunctions - Functions which have not been code generated yet, but - /// were called from a function being code generated. - std::vector<AssertingVH<Function> > PendingFunctions; - -public: - explicit JITState(Module *M) : PM(M), M(M) {} - - FunctionPassManager &getPM() { - return PM; - } - - Module *getModule() const { return M; } - std::vector<AssertingVH<Function> > &getPendingFunctions() { - return PendingFunctions; - } -}; - - -class JIT : public ExecutionEngine { - /// types - typedef ValueMap<const BasicBlock *, void *> - BasicBlockAddressMapTy; - /// data - TargetMachine &TM; // The current target we are compiling to - TargetJITInfo &TJI; // The JITInfo for the target we are compiling to - JITCodeEmitter *JCE; // JCE object - JITMemoryManager *JMM; - std::vector<JITEventListener*> EventListeners; - - /// AllocateGVsWithCode - Some applications require that global variables and - /// code be allocated into the same region of memory, in which case this flag - /// should be set to true. Doing so breaks freeMachineCodeForFunction. - bool AllocateGVsWithCode; - - /// True while the JIT is generating code. Used to assert against recursive - /// entry. - bool isAlreadyCodeGenerating; - - JITState *jitstate; - - /// BasicBlockAddressMap - A mapping between LLVM basic blocks and their - /// actualized version, only filled for basic blocks that have their address - /// taken. - BasicBlockAddressMapTy BasicBlockAddressMap; - - - JIT(Module *M, TargetMachine &tm, TargetJITInfo &tji, - JITMemoryManager *JMM, bool AllocateGVsWithCode); -public: - ~JIT(); - - static void Register() { - JITCtor = createJIT; - } - - /// getJITInfo - Return the target JIT information structure. - /// - TargetJITInfo &getJITInfo() const { return TJI; } - - /// create - Create an return a new JIT compiler if there is one available - /// for the current target. Otherwise, return null. - /// - static ExecutionEngine *create(Module *M, - std::string *Err, - JITMemoryManager *JMM, - CodeGenOpt::Level OptLevel = - CodeGenOpt::Default, - bool GVsWithCode = true, - Reloc::Model RM = Reloc::Default, - CodeModel::Model CMM = CodeModel::JITDefault) { - return ExecutionEngine::createJIT(M, Err, JMM, OptLevel, GVsWithCode, - RM, CMM); - } - - void addModule(Module *M) override; - - /// removeModule - Remove a Module from the list of modules. Returns true if - /// M is found. - bool removeModule(Module *M) override; - - /// runFunction - Start execution with the specified function and arguments. - /// - GenericValue runFunction(Function *F, - const std::vector<GenericValue> &ArgValues) override; - - /// getPointerToNamedFunction - This method returns the address of the - /// specified function by using the MemoryManager. As such it is only - /// useful for resolving library symbols, not code generated symbols. - /// - /// If AbortOnFailure is false and no function with the given name is - /// found, this function silently returns a null pointer. Otherwise, - /// it prints a message to stderr and aborts. - /// - void *getPointerToNamedFunction(const std::string &Name, - bool AbortOnFailure = true) override; - - // CompilationCallback - Invoked the first time that a call site is found, - // which causes lazy compilation of the target function. - // - static void CompilationCallback(); - - /// getPointerToFunction - This returns the address of the specified function, - /// compiling it if necessary. - /// - void *getPointerToFunction(Function *F) override; - - /// addPointerToBasicBlock - Adds address of the specific basic block. - void addPointerToBasicBlock(const BasicBlock *BB, void *Addr); - - /// clearPointerToBasicBlock - Removes address of specific basic block. - void clearPointerToBasicBlock(const BasicBlock *BB); - - /// getPointerToBasicBlock - This returns the address of the specified basic - /// block, assuming function is compiled. - void *getPointerToBasicBlock(BasicBlock *BB) override; - - /// getOrEmitGlobalVariable - Return the address of the specified global - /// variable, possibly emitting it to memory if needed. This is used by the - /// Emitter. - void *getOrEmitGlobalVariable(const GlobalVariable *GV) override; - - /// 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. - /// - void *getPointerToFunctionOrStub(Function *F) override; - - /// 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 JIT::getPointerToFunction(). - /// - void *recompileAndRelinkFunction(Function *F) override; - - /// freeMachineCodeForFunction - deallocate memory used to code-generate this - /// Function. - /// - void freeMachineCodeForFunction(Function *F) override; - - /// addPendingFunction - while jitting non-lazily, a called but non-codegen'd - /// function was encountered. Add it to a pending list to be processed after - /// the current function. - /// - void addPendingFunction(Function *F); - - /// getCodeEmitter - Return the code emitter this JIT is emitting into. - /// - JITCodeEmitter *getCodeEmitter() const { return JCE; } - - static ExecutionEngine *createJIT(Module *M, - std::string *ErrorStr, - JITMemoryManager *JMM, - bool GVsWithCode, - TargetMachine *TM); - - // Run the JIT on F and return information about the generated code - void runJITOnFunction(Function *F, MachineCodeInfo *MCI = nullptr) override; - - void RegisterJITEventListener(JITEventListener *L) override; - void UnregisterJITEventListener(JITEventListener *L) override; - - TargetMachine *getTargetMachine() override { return &TM; } - - /// These functions correspond to the methods on JITEventListener. They - /// iterate over the registered listeners and call the corresponding method on - /// each. - void NotifyFunctionEmitted( - const Function &F, void *Code, size_t Size, - const JITEvent_EmittedFunctionDetails &Details); - void NotifyFreeingMachineCode(void *OldPtr); - - BasicBlockAddressMapTy & - getBasicBlockAddressMap() { - return BasicBlockAddressMap; - } - - -private: - static JITCodeEmitter *createEmitter(JIT &J, JITMemoryManager *JMM, - TargetMachine &tm); - void runJITOnFunctionUnlocked(Function *F); - void updateFunctionStubUnlocked(Function *F); - void jitTheFunctionUnlocked(Function *F); - -protected: - - /// getMemoryforGV - Allocate memory for a global variable. - char* getMemoryForGV(const GlobalVariable* GV) override; - -}; - -} // End llvm namespace - -#endif |