//===-- JIT.h - Class definition for the JIT --------------------*- C++ -*-===//
-//
+//
// The LLVM Compiler Infrastructure
//
-// This file was developed by the LLVM research group and is distributed under
-// the University of Illinois Open Source License. See LICENSE.TXT for details.
-//
+// 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.
#include "llvm/ExecutionEngine/ExecutionEngine.h"
#include "llvm/PassManager.h"
-#include <map>
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
+ ModuleProvider *MP; // ModuleProvider 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<Function*> PendingFunctions;
+
+public:
+ explicit JITState(ModuleProvider *MP) : PM(MP), MP(MP) {}
+
+ FunctionPassManager &getPM(const MutexGuard &L) {
+ return PM;
+ }
+
+ ModuleProvider *getMP() const { return MP; }
+ std::vector<Function*> &getPendingFunctions(const MutexGuard &L) {
+ return PendingFunctions;
+ }
+};
+
class JIT : public ExecutionEngine {
TargetMachine &TM; // The current target we are compiling to
TargetJITInfo &TJI; // The JITInfo for the target we are compiling to
-
- FunctionPassManager PM; // Passes to compile a function
- MachineCodeEmitter *MCE; // MCE object
+ JITCodeEmitter *JCE; // JCE object
+ 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;
- /// 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;
+ JITState *jitstate;
- JIT(ModuleProvider *MP, TargetMachine &tm, TargetJITInfo &tji);
+ JIT(ModuleProvider *MP, TargetMachine &tm, TargetJITInfo &tji,
+ JITMemoryManager *JMM, CodeGenOpt::Level OptLevel,
+ bool AllocateGVsWithCode);
public:
~JIT();
+ static void Register() {
+ JITCtor = create;
+ }
+
/// 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. If the JIT is created
- /// successfully, it takes responsibility for deleting the specified
- /// IntrinsicLowering implementation.
+ /// for the current target. Otherwise, return null.
///
- static ExecutionEngine *create(ModuleProvider *MP, IntrinsicLowering *IL = 0);
-
- /// run - Start execution with the specified function and arguments.
+ static ExecutionEngine *create(ModuleProvider *MP, std::string *Err,
+ CodeGenOpt::Level OptLevel =
+ CodeGenOpt::Default,
+ bool AllocateGVsWithCode = true) {
+ return createJIT(MP, Err, 0, OptLevel, AllocateGVsWithCode);
+ }
+
+ virtual void addModuleProvider(ModuleProvider *MP);
+
+ /// removeModuleProvider - Remove a ModuleProvider from the list of modules.
+ /// Relases the Module from the ModuleProvider, materializing it in the
+ /// process, and returns the materialized Module.
+ virtual Module *removeModuleProvider(ModuleProvider *MP,
+ std::string *ErrInfo = 0);
+
+ /// deleteModuleProvider - Remove a ModuleProvider from the list of modules,
+ /// and deletes the ModuleProvider and owned Module. Avoids materializing
+ /// the underlying module.
+ virtual void deleteModuleProvider(ModuleProvider *P,std::string *ErrInfo = 0);
+
+ /// runFunction - Start execution with the specified function and arguments.
///
virtual GenericValue runFunction(Function *F,
const std::vector<GenericValue> &ArgValues);
/// specified function by using the dlsym function call. As such it is only
/// useful for resolving library symbols, not code generated symbols.
///
- void *getPointerToNamedFunction(const std::string &Name);
+ /// 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);
// 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,
///
void freeMachineCodeForFunction(Function *F);
+ /// 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(ModuleProvider *MP,
+ std::string *Err,
+ JITMemoryManager *JMM,
+ CodeGenOpt::Level OptLevel,
+ bool AllocateGVsWithCode);
+
+
+ // Run the JIT on F and return information about the generated code
+ void runJITOnFunction(Function *F, MachineCodeInfo *MCI = 0);
+
+ virtual void RegisterJITEventListener(JITEventListener *L);
+ virtual void UnregisterJITEventListener(JITEventListener *L);
+ /// 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(const Function &F, void *OldPtr);
+
private:
- static MachineCodeEmitter *createEmitter(JIT &J);
- void runJITOnFunction (Function *F);
+ static JITCodeEmitter *createEmitter(JIT &J, JITMemoryManager *JMM);
+ void runJITOnFunctionUnlocked(Function *F, const MutexGuard &locked);
+ void updateFunctionStub(Function *F);
+ void updateDlsymStubTable();
+
+protected:
+
+ /// getMemoryforGV - Allocate memory for a global variable.
+ virtual char* getMemoryForGV(const GlobalVariable* GV);
+
};
} // End llvm namespace
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