//===-- 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.
class TargetJITInfo;
class MachineCodeEmitter;
-class JIT : public ExecutionEngine {
- TargetMachine &TM; // The current target we are compiling to
- TargetJITInfo &TJI; // The JITInfo for the target we are compiling to
-
+class JITState {
+private:
FunctionPassManager PM; // Passes to compile a function
- MachineCodeEmitter *MCE; // MCE object
/// 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;
- JIT(ModuleProvider *MP, TargetMachine &tm, TargetJITInfo &tji);
+public:
+ JITState(ModuleProvider *MP) : PM(MP) {}
+
+ FunctionPassManager &getPM(const MutexGuard &L) {
+ return PM;
+ }
+
+ std::vector<const GlobalVariable*> &getPendingGlobals(const MutexGuard &L) {
+ return PendingGlobals;
+ }
+};
+
+
+class JIT : public ExecutionEngine {
+ TargetMachine &TM; // The current target we are compiling to
+ TargetJITInfo &TJI; // The JITInfo for the target we are compiling to
+ MachineCodeEmitter *MCE; // MCE object
+
+ JITState jitstate;
+
+ JIT(ModuleProvider *MP, TargetMachine &tm, TargetJITInfo &tji,
+ JITMemoryManager *JMM);
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.
///
- static ExecutionEngine *create(ModuleProvider *MP);
+ static ExecutionEngine *create(ModuleProvider *MP, std::string *Err) {
+ return createJIT(MP, Err, 0);
+ }
/// run - Start execution with the specified function and arguments.
///
- virtual GenericValue run(Function *F,
- const std::vector<GenericValue> &ArgValues);
+ virtual GenericValue runFunction(Function *F,
+ const std::vector<GenericValue> &ArgValues);
/// getPointerToNamedFunction - This method returns the address of the
/// specified function by using the dlsym function call. As such it is only
// CompilationCallback - Invoked the first time that a call site is found,
// which causes lazy compilation of the target function.
- //
+ //
static void CompilationCallback();
- /// runAtExitHandlers - Before exiting the program, at_exit functions must be
- /// called. This method calls them.
- ///
- static void runAtExitHandlers();
-
/// getPointerToFunction - This returns the address of the specified function,
/// compiling it if necessary.
///
///
void *recompileAndRelinkFunction(Function *F);
+ /// freeMachineCodeForFunction - deallocate memory used to code-generate this
+ /// Function.
+ ///
+ void freeMachineCodeForFunction(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);
+
private:
- static MachineCodeEmitter *createEmitter(JIT &J);
+ static MachineCodeEmitter *createEmitter(JIT &J, JITMemoryManager *JMM);
void runJITOnFunction (Function *F);
};