#define JIT_H
#include "llvm/ExecutionEngine/ExecutionEngine.h"
+#include "llvm/IR/ValueHandle.h"
#include "llvm/PassManager.h"
namespace llvm {
class Function;
-class GlobalValue;
-class Constant;
-class TargetMachine;
-class TargetJITInfo;
+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
- /// PendingGlobals - Global variables which have had memory allocated for them
- /// while a function was code generated, but which have not been initialized
- /// yet.
- std::vector<const GlobalVariable*> PendingGlobals;
+ /// 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(ModuleProvider *MP) : PM(MP) {}
+ explicit JITState(Module *M) : PM(M), M(M) {}
FunctionPassManager &getPM(const MutexGuard &L) {
return PM;
}
- std::vector<const GlobalVariable*> &getPendingGlobals(const MutexGuard &L) {
- return PendingGlobals;
+ Module *getModule() const { return M; }
+ std::vector<AssertingVH<Function> > &getPendingFunctions(const MutexGuard &L){
+ 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
- MachineCodeEmitter *MCE; // MCE object
+ 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;
- JIT(ModuleProvider *MP, TargetMachine &tm, TargetJITInfo &tji,
- JITMemoryManager *JMM, bool Fast);
+ /// 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 = create;
+ 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(ModuleProvider *MP, std::string *Err,
- bool Fast = false) {
- return createJIT(MP, Err, 0, Fast);
+ 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);
}
- virtual void addModuleProvider(ModuleProvider *MP);
- virtual Module *removeModuleProvider(ModuleProvider *MP,
- std::string *ErrInfo = 0);
+ 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.
///
- virtual GenericValue runFunction(Function *F,
- const std::vector<GenericValue> &ArgValues);
+ GenericValue runFunction(Function *F,
+ const std::vector<GenericValue> &ArgValues) override;
/// getPointerToNamedFunction - This method returns the address of the
- /// specified function by using the dlsym function call. As such it is only
+ /// 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
/// it prints a message to stderr and aborts.
///
void *getPointerToNamedFunction(const std::string &Name,
- bool AbortOnFailure = true);
+ bool AbortOnFailure = true) override;
// CompilationCallback - Invoked the first time that a call site is found,
// which causes lazy compilation of the target function.
/// getPointerToFunction - This returns the address of the specified function,
/// compiling it if necessary.
///
- void *getPointerToFunction(Function *F);
+ 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);
+ 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);
+ void *getPointerToFunctionOrStub(Function *F) override;
/// recompileAndRelinkFunction - This method is used to force a function
/// which has already been compiled, to be compiled again, possibly
/// with a branch to the new copy. If there was no old copy, this acts
/// just like JIT::getPointerToFunction().
///
- void *recompileAndRelinkFunction(Function *F);
+ void *recompileAndRelinkFunction(Function *F) override;
/// freeMachineCodeForFunction - deallocate memory used to code-generate this
/// Function.
///
- void freeMachineCodeForFunction(Function *F);
+ 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.
- MachineCodeEmitter *getCodeEmitter() const { return MCE; }
-
- static ExecutionEngine *createJIT(ModuleProvider *MP, std::string *Err,
- JITMemoryManager *JMM, bool Fast);
-
+ ///
+ 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(const MutexGuard &) {
+ return BasicBlockAddressMap;
+ }
+
+
private:
- static MachineCodeEmitter *createEmitter(JIT &J, JITMemoryManager *JMM);
- void runJITOnFunction (Function *F);
-
+ static JITCodeEmitter *createEmitter(JIT &J, JITMemoryManager *JMM,
+ TargetMachine &tm);
+ void runJITOnFunctionUnlocked(Function *F, const MutexGuard &locked);
+ void updateFunctionStub(Function *F);
+ void jitTheFunction(Function *F, const MutexGuard &locked);
+
protected:
/// getMemoryforGV - Allocate memory for a global variable.
- virtual char* getMemoryForGV(const GlobalVariable* GV);
+ char* getMemoryForGV(const GlobalVariable* GV) override;
};
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