//===----------------------------------------------------------------------===//
#include "JIT.h"
-#include "llvm/Constants.h"
-#include "llvm/DerivedTypes.h"
-#include "llvm/Function.h"
-#include "llvm/GlobalVariable.h"
-#include "llvm/Instructions.h"
-#include "llvm/ModuleProvider.h"
+#include "llvm/ADT/SmallPtrSet.h"
#include "llvm/CodeGen/JITCodeEmitter.h"
#include "llvm/CodeGen/MachineCodeInfo.h"
+#include "llvm/Config/config.h"
#include "llvm/ExecutionEngine/GenericValue.h"
#include "llvm/ExecutionEngine/JITEventListener.h"
-#include "llvm/Target/TargetData.h"
-#include "llvm/Target/TargetMachine.h"
-#include "llvm/Target/TargetJITInfo.h"
+#include "llvm/ExecutionEngine/JITMemoryManager.h"
+#include "llvm/IR/Constants.h"
+#include "llvm/IR/DataLayout.h"
+#include "llvm/IR/DerivedTypes.h"
+#include "llvm/IR/Function.h"
+#include "llvm/IR/GlobalVariable.h"
+#include "llvm/IR/Instructions.h"
+#include "llvm/IR/Module.h"
#include "llvm/Support/Dwarf.h"
+#include "llvm/Support/DynamicLibrary.h"
#include "llvm/Support/ErrorHandling.h"
+#include "llvm/Support/ManagedStatic.h"
#include "llvm/Support/MutexGuard.h"
-#include "llvm/System/DynamicLibrary.h"
-#include "llvm/Config/config.h"
+#include "llvm/Target/TargetJITInfo.h"
+#include "llvm/Target/TargetMachine.h"
+#include "llvm/Target/TargetSubtargetInfo.h"
using namespace llvm;
-#ifdef __APPLE__
+#ifdef __APPLE__
// Apple gcc defaults to -fuse-cxa-atexit (i.e. calls __cxa_atexit instead
// of atexit). It passes the address of linker generated symbol __dso_handle
// to the function.
extern "C" void LLVMLinkInJIT() {
}
-
-#if defined(__GNUC__) && !defined(__ARM__EABI__)
-
-// libgcc defines the __register_frame function to dynamically register new
-// dwarf frames for exception handling. This functionality is not portable
-// across compilers and is only provided by GCC. We use the __register_frame
-// function here so that code generated by the JIT cooperates with the unwinding
-// runtime of libgcc. When JITting with exception handling enable, LLVM
-// generates dwarf frames and registers it to libgcc with __register_frame.
-//
-// The __register_frame function works with Linux.
-//
-// Unfortunately, this functionality seems to be in libgcc after the unwinding
-// library of libgcc for darwin was written. The code for darwin overwrites the
-// value updated by __register_frame with a value fetched with "keymgr".
-// "keymgr" is an obsolete functionality, which should be rewritten some day.
-// In the meantime, since "keymgr" is on all libgccs shipped with apple-gcc, we
-// need a workaround in LLVM which uses the "keymgr" to dynamically modify the
-// values of an opaque key, used by libgcc to find dwarf tables.
-
-extern "C" void __register_frame(void*);
-
-#if defined(__APPLE__) && MAC_OS_X_VERSION_MAX_ALLOWED <= 1050
-# define USE_KEYMGR 1
-#else
-# define USE_KEYMGR 0
-#endif
-
-#if USE_KEYMGR
-
-namespace {
-
-// LibgccObject - This is the structure defined in libgcc. There is no #include
-// provided for this structure, so we also define it here. libgcc calls it
-// "struct object". The structure is undocumented in libgcc.
-struct LibgccObject {
- void *unused1;
- void *unused2;
- void *unused3;
-
- /// frame - Pointer to the exception table.
- void *frame;
-
- /// encoding - The encoding of the object?
- union {
- struct {
- unsigned long sorted : 1;
- unsigned long from_array : 1;
- unsigned long mixed_encoding : 1;
- unsigned long encoding : 8;
- unsigned long count : 21;
- } b;
- size_t i;
- } encoding;
-
- /// fde_end - libgcc defines this field only if some macro is defined. We
- /// include this field even if it may not there, to make libgcc happy.
- char *fde_end;
-
- /// next - At least we know it's a chained list!
- struct LibgccObject *next;
-};
-
-// "kemgr" stuff. Apparently, all frame tables are stored there.
-extern "C" void _keymgr_set_and_unlock_processwide_ptr(int, void *);
-extern "C" void *_keymgr_get_and_lock_processwide_ptr(int);
-#define KEYMGR_GCC3_DW2_OBJ_LIST 302 /* Dwarf2 object list */
-
-/// LibgccObjectInfo - libgcc defines this struct as km_object_info. It
-/// probably contains all dwarf tables that are loaded.
-struct LibgccObjectInfo {
-
- /// seenObjects - LibgccObjects already parsed by the unwinding runtime.
- ///
- struct LibgccObject* seenObjects;
-
- /// unseenObjects - LibgccObjects not parsed yet by the unwinding runtime.
- ///
- struct LibgccObject* unseenObjects;
-
- unsigned unused[2];
-};
-
-/// darwin_register_frame - Since __register_frame does not work with darwin's
-/// libgcc,we provide our own function, which "tricks" libgcc by modifying the
-/// "Dwarf2 object list" key.
-void DarwinRegisterFrame(void* FrameBegin) {
- // Get the key.
- LibgccObjectInfo* LOI = (struct LibgccObjectInfo*)
- _keymgr_get_and_lock_processwide_ptr(KEYMGR_GCC3_DW2_OBJ_LIST);
- assert(LOI && "This should be preallocated by the runtime");
-
- // Allocate a new LibgccObject to represent this frame. Deallocation of this
- // object may be impossible: since darwin code in libgcc was written after
- // the ability to dynamically register frames, things may crash if we
- // deallocate it.
- struct LibgccObject* ob = (struct LibgccObject*)
- malloc(sizeof(struct LibgccObject));
-
- // Do like libgcc for the values of the field.
- ob->unused1 = (void *)-1;
- ob->unused2 = 0;
- ob->unused3 = 0;
- ob->frame = FrameBegin;
- ob->encoding.i = 0;
- ob->encoding.b.encoding = llvm::dwarf::DW_EH_PE_omit;
-
- // Put the info on both places, as libgcc uses the first or the the second
- // field. Note that we rely on having two pointers here. If fde_end was a
- // char, things would get complicated.
- ob->fde_end = (char*)LOI->unseenObjects;
- ob->next = LOI->unseenObjects;
-
- // Update the key's unseenObjects list.
- LOI->unseenObjects = ob;
-
- // Finally update the "key". Apparently, libgcc requires it.
- _keymgr_set_and_unlock_processwide_ptr(KEYMGR_GCC3_DW2_OBJ_LIST,
- LOI);
-
-}
-
-}
-#endif // __APPLE__
-#endif // __GNUC__
-
/// 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 provider.
-ExecutionEngine *ExecutionEngine::createJIT(ModuleProvider *MP,
- std::string *ErrorStr,
- JITMemoryManager *JMM,
- CodeGenOpt::Level OptLevel,
- bool GVsWithCode,
- CodeModel::Model CMM) {
- return JIT::createJIT(MP, ErrorStr, JMM, OptLevel, GVsWithCode, CMM);
-}
-
-ExecutionEngine *JIT::createJIT(ModuleProvider *MP,
+/// of the module.
+ExecutionEngine *JIT::createJIT(Module *M,
std::string *ErrorStr,
JITMemoryManager *JMM,
- CodeGenOpt::Level OptLevel,
bool GVsWithCode,
- CodeModel::Model CMM) {
- // Make sure we can resolve symbols in the program as well. The zero arg
- // to the function tells DynamicLibrary to load the program, not a library.
- if (sys::DynamicLibrary::LoadLibraryPermanently(0, ErrorStr))
- return 0;
-
- // Pick a target either via -march or by guessing the native arch.
- TargetMachine *TM = JIT::selectTarget(MP, ErrorStr);
- if (!TM || (ErrorStr && ErrorStr->length() > 0)) return 0;
- TM->setCodeModel(CMM);
-
- // If the target supports JIT code generation, create a the JIT.
- if (TargetJITInfo *TJ = TM->getJITInfo()) {
- return new JIT(MP, *TM, *TJ, JMM, OptLevel, GVsWithCode);
+ TargetMachine *TM) {
+ // Try to register the program as a source of symbols to resolve against.
+ //
+ // FIXME: Don't do this here.
+ sys::DynamicLibrary::LoadLibraryPermanently(nullptr, nullptr);
+
+ // If the target supports JIT code generation, create the JIT.
+ if (TargetJITInfo *TJ = TM->getSubtargetImpl()->getJITInfo()) {
+ return new JIT(M, *TM, *TJ, JMM, GVsWithCode);
} else {
if (ErrorStr)
*ErrorStr = "target does not support JIT code generation";
- return 0;
+ return nullptr;
}
}
-JIT::JIT(ModuleProvider *MP, TargetMachine &tm, TargetJITInfo &tji,
- JITMemoryManager *JMM, CodeGenOpt::Level OptLevel, bool GVsWithCode)
- : ExecutionEngine(MP), TM(tm), TJI(tji), AllocateGVsWithCode(GVsWithCode) {
- setTargetData(TM.getTargetData());
+namespace {
+/// This class supports the global getPointerToNamedFunction(), which allows
+/// bugpoint or gdb users to search for a function by name without any context.
+class JitPool {
+ SmallPtrSet<JIT*, 1> JITs; // Optimize for process containing just 1 JIT.
+ mutable sys::Mutex Lock;
+public:
+ void Add(JIT *jit) {
+ MutexGuard guard(Lock);
+ JITs.insert(jit);
+ }
+ void Remove(JIT *jit) {
+ MutexGuard guard(Lock);
+ JITs.erase(jit);
+ }
+ void *getPointerToNamedFunction(const char *Name) const {
+ MutexGuard guard(Lock);
+ assert(JITs.size() != 0 && "No Jit registered");
+ //search function in every instance of JIT
+ for (SmallPtrSet<JIT*, 1>::const_iterator Jit = JITs.begin(),
+ end = JITs.end();
+ Jit != end; ++Jit) {
+ if (Function *F = (*Jit)->FindFunctionNamed(Name))
+ return (*Jit)->getPointerToFunction(F);
+ }
+ // The function is not available : fallback on the first created (will
+ // search in symbol of the current program/library)
+ return (*JITs.begin())->getPointerToNamedFunction(Name);
+ }
+};
+ManagedStatic<JitPool> AllJits;
+}
+extern "C" {
+ // getPointerToNamedFunction - This function is used as a global wrapper to
+ // JIT::getPointerToNamedFunction for the purpose of resolving symbols when
+ // bugpoint is debugging the JIT. In that scenario, we are loading an .so and
+ // need to resolve function(s) that are being mis-codegenerated, so we need to
+ // resolve their addresses at runtime, and this is the way to do it.
+ void *getPointerToNamedFunction(const char *Name) {
+ return AllJits->getPointerToNamedFunction(Name);
+ }
+}
+
+JIT::JIT(Module *M, TargetMachine &tm, TargetJITInfo &tji,
+ JITMemoryManager *jmm, bool GVsWithCode)
+ : ExecutionEngine(M), TM(tm), TJI(tji),
+ JMM(jmm ? jmm : JITMemoryManager::CreateDefaultMemManager()),
+ AllocateGVsWithCode(GVsWithCode), isAlreadyCodeGenerating(false) {
+ setDataLayout(TM.getSubtargetImpl()->getDataLayout());
- jitstate = new JITState(MP);
+ jitstate = new JITState(M);
// Initialize JCE
JCE = createEmitter(*this, JMM, TM);
+ // Register in global list of all JITs.
+ AllJits->Add(this);
+
// Add target data
MutexGuard locked(lock);
- FunctionPassManager &PM = jitstate->getPM(locked);
- PM.add(new TargetData(*TM.getTargetData()));
+ FunctionPassManager &PM = jitstate->getPM();
+ M->setDataLayout(TM.getSubtargetImpl()->getDataLayout());
+ PM.add(new DataLayoutPass(M));
// Turn the machine code intermediate representation into bytes in memory that
// may be executed.
- if (TM.addPassesToEmitMachineCode(PM, *JCE, OptLevel)) {
- llvm_report_error("Target does not support machine code emission!");
+ if (TM.addPassesToEmitMachineCode(PM, *JCE, !getVerifyModules())) {
+ report_fatal_error("Target does not support machine code emission!");
}
-
- // Register routine for informing unwinding runtime about new EH frames
-#if defined(__GNUC__) && !defined(__ARM_EABI__)
-#if USE_KEYMGR
- struct LibgccObjectInfo* LOI = (struct LibgccObjectInfo*)
- _keymgr_get_and_lock_processwide_ptr(KEYMGR_GCC3_DW2_OBJ_LIST);
-
- // The key is created on demand, and libgcc creates it the first time an
- // exception occurs. Since we need the key to register frames, we create
- // it now.
- if (!LOI)
- LOI = (LibgccObjectInfo*)calloc(sizeof(struct LibgccObjectInfo), 1);
- _keymgr_set_and_unlock_processwide_ptr(KEYMGR_GCC3_DW2_OBJ_LIST, LOI);
- InstallExceptionTableRegister(DarwinRegisterFrame);
-#else
- InstallExceptionTableRegister(__register_frame);
-#endif // __APPLE__
-#endif // __GNUC__
-
+
// Initialize passes.
PM.doInitialization();
}
JIT::~JIT() {
+ // Cleanup.
+ AllJits->Remove(this);
delete jitstate;
delete JCE;
+ // JMM is a ownership of JCE, so we no need delete JMM here.
delete &TM;
}
-/// addModuleProvider - Add a new ModuleProvider to the JIT. If we previously
-/// removed the last ModuleProvider, we need re-initialize jitstate with a valid
-/// ModuleProvider.
-void JIT::addModuleProvider(ModuleProvider *MP) {
+/// addModule - Add a new Module to the JIT. If we previously removed the last
+/// Module, we need re-initialize jitstate with a valid Module.
+void JIT::addModule(Module *M) {
MutexGuard locked(lock);
if (Modules.empty()) {
assert(!jitstate && "jitstate should be NULL if Modules vector is empty!");
- jitstate = new JITState(MP);
+ jitstate = new JITState(M);
- FunctionPassManager &PM = jitstate->getPM(locked);
- PM.add(new TargetData(*TM.getTargetData()));
+ FunctionPassManager &PM = jitstate->getPM();
+ M->setDataLayout(TM.getSubtargetImpl()->getDataLayout());
+ PM.add(new DataLayoutPass(M));
// Turn the machine code intermediate representation into bytes in memory
// that may be executed.
- if (TM.addPassesToEmitMachineCode(PM, *JCE, CodeGenOpt::Default)) {
- llvm_report_error("Target does not support machine code emission!");
+ if (TM.addPassesToEmitMachineCode(PM, *JCE, !getVerifyModules())) {
+ report_fatal_error("Target does not support machine code emission!");
}
-
+
// Initialize passes.
PM.doInitialization();
}
-
- ExecutionEngine::addModuleProvider(MP);
-}
-
-/// removeModuleProvider - If we are removing the last ModuleProvider,
-/// invalidate the jitstate since the PassManager it contains references a
-/// released ModuleProvider.
-Module *JIT::removeModuleProvider(ModuleProvider *MP, std::string *E) {
- Module *result = ExecutionEngine::removeModuleProvider(MP, E);
-
- MutexGuard locked(lock);
-
- if (jitstate->getMP() == MP) {
- delete jitstate;
- jitstate = 0;
- }
-
- if (!jitstate && !Modules.empty()) {
- jitstate = new JITState(Modules[0]);
- FunctionPassManager &PM = jitstate->getPM(locked);
- PM.add(new TargetData(*TM.getTargetData()));
-
- // Turn the machine code intermediate representation into bytes in memory
- // that may be executed.
- if (TM.addPassesToEmitMachineCode(PM, *JCE, CodeGenOpt::Default)) {
- llvm_report_error("Target does not support machine code emission!");
- }
-
- // Initialize passes.
- PM.doInitialization();
- }
- return result;
+ ExecutionEngine::addModule(M);
}
-/// deleteModuleProvider - Remove a ModuleProvider from the list of modules,
-/// and deletes the ModuleProvider and owned Module. Avoids materializing
-/// the underlying module.
-void JIT::deleteModuleProvider(ModuleProvider *MP, std::string *E) {
- ExecutionEngine::deleteModuleProvider(MP, E);
-
+/// removeModule - If we are removing the last Module, invalidate the jitstate
+/// since the PassManager it contains references a released Module.
+bool JIT::removeModule(Module *M) {
+ bool result = ExecutionEngine::removeModule(M);
+
MutexGuard locked(lock);
-
- if (jitstate->getMP() == MP) {
+
+ if (jitstate && jitstate->getModule() == M) {
delete jitstate;
- jitstate = 0;
+ jitstate = nullptr;
}
if (!jitstate && !Modules.empty()) {
jitstate = new JITState(Modules[0]);
-
- FunctionPassManager &PM = jitstate->getPM(locked);
- PM.add(new TargetData(*TM.getTargetData()));
-
+
+ FunctionPassManager &PM = jitstate->getPM();
+ M->setDataLayout(TM.getSubtargetImpl()->getDataLayout());
+ PM.add(new DataLayoutPass(M));
+
// Turn the machine code intermediate representation into bytes in memory
// that may be executed.
- if (TM.addPassesToEmitMachineCode(PM, *JCE, CodeGenOpt::Default)) {
- llvm_report_error("Target does not support machine code emission!");
+ if (TM.addPassesToEmitMachineCode(PM, *JCE, !getVerifyModules())) {
+ report_fatal_error("Target does not support machine code emission!");
}
-
+
// Initialize passes.
PM.doInitialization();
- }
-}
-
-/// materializeFunction - make sure the given function is fully read. If the
-/// module is corrupt, this returns true and fills in the optional string with
-/// information about the problem. If successful, this returns false.
-bool JIT::materializeFunction(Function *F, std::string *ErrInfo) {
- // Read in the function if it exists in this Module.
- if (F->hasNotBeenReadFromBitcode()) {
- // Determine the module provider this function is provided by.
- Module *M = F->getParent();
- ModuleProvider *MP = 0;
- for (unsigned i = 0, e = Modules.size(); i != e; ++i) {
- if (Modules[i]->getModule() == M) {
- MP = Modules[i];
- break;
- }
- }
- if (MP)
- return MP->materializeFunction(F, ErrInfo);
-
- if (ErrInfo)
- *ErrInfo = "Function isn't in a module we know about!";
- return true;
}
- // Succeed if the function is already read.
- return false;
+ return result;
}
/// run - Start execution with the specified function and arguments.
void *FPtr = getPointerToFunction(F);
assert(FPtr && "Pointer to fn's code was null after getPointerToFunction");
- const FunctionType *FTy = F->getFunctionType();
- const Type *RetTy = FTy->getReturnType();
+ FunctionType *FTy = F->getFunctionType();
+ Type *RetTy = FTy->getReturnType();
assert((FTy->getNumParams() == ArgValues.size() ||
(FTy->isVarArg() && FTy->getNumParams() <= ArgValues.size())) &&
// Handle some common cases first. These cases correspond to common `main'
// prototypes.
- if (RetTy == Type::getInt32Ty(F->getContext()) ||
- RetTy == Type::getVoidTy(F->getContext())) {
+ if (RetTy->isIntegerTy(32) || RetTy->isVoidTy()) {
switch (ArgValues.size()) {
case 3:
- if (FTy->getParamType(0) == Type::getInt32Ty(F->getContext()) &&
- isa<PointerType>(FTy->getParamType(1)) &&
- isa<PointerType>(FTy->getParamType(2))) {
+ if (FTy->getParamType(0)->isIntegerTy(32) &&
+ FTy->getParamType(1)->isPointerTy() &&
+ FTy->getParamType(2)->isPointerTy()) {
int (*PF)(int, char **, const char **) =
(int(*)(int, char **, const char **))(intptr_t)FPtr;
// Call the function.
GenericValue rv;
- rv.IntVal = APInt(32, PF(ArgValues[0].IntVal.getZExtValue(),
+ rv.IntVal = APInt(32, PF(ArgValues[0].IntVal.getZExtValue(),
(char **)GVTOP(ArgValues[1]),
(const char **)GVTOP(ArgValues[2])));
return rv;
}
break;
case 2:
- if (FTy->getParamType(0) == Type::getInt32Ty(F->getContext()) &&
- isa<PointerType>(FTy->getParamType(1))) {
+ if (FTy->getParamType(0)->isIntegerTy(32) &&
+ FTy->getParamType(1)->isPointerTy()) {
int (*PF)(int, char **) = (int(*)(int, char **))(intptr_t)FPtr;
// Call the function.
GenericValue rv;
- rv.IntVal = APInt(32, PF(ArgValues[0].IntVal.getZExtValue(),
+ rv.IntVal = APInt(32, PF(ArgValues[0].IntVal.getZExtValue(),
(char **)GVTOP(ArgValues[1])));
return rv;
}
break;
case 1:
- if (FTy->getNumParams() == 1 &&
- FTy->getParamType(0) == Type::getInt32Ty(F->getContext())) {
+ if (FTy->getParamType(0)->isIntegerTy(32)) {
GenericValue rv;
int (*PF)(int) = (int(*)(int))(intptr_t)FPtr;
rv.IntVal = APInt(32, PF(ArgValues[0].IntVal.getZExtValue()));
return rv;
}
+ if (FTy->getParamType(0)->isPointerTy()) {
+ GenericValue rv;
+ int (*PF)(char *) = (int(*)(char *))(intptr_t)FPtr;
+ rv.IntVal = APInt(32, PF((char*)GVTOP(ArgValues[0])));
+ return rv;
+ }
break;
}
}
rv.IntVal = APInt(BitWidth, ((int(*)())(intptr_t)FPtr)());
else if (BitWidth <= 64)
rv.IntVal = APInt(BitWidth, ((int64_t(*)())(intptr_t)FPtr)());
- else
+ else
llvm_unreachable("Integer types > 64 bits not supported");
return rv;
}
case Type::FP128TyID:
case Type::PPC_FP128TyID:
llvm_unreachable("long double not supported yet");
- return rv;
case Type::PointerTyID:
return PTOGV(((void*(*)())(intptr_t)FPtr)());
}
// currently don't support varargs.
SmallVector<Value*, 8> Args;
for (unsigned i = 0, e = ArgValues.size(); i != e; ++i) {
- Constant *C = 0;
- const Type *ArgTy = FTy->getParamType(i);
+ Constant *C = nullptr;
+ Type *ArgTy = FTy->getParamType(i);
const GenericValue &AV = ArgValues[i];
switch (ArgTy->getTypeID()) {
default: llvm_unreachable("Unknown argument type for function call!");
case Type::PPC_FP128TyID:
case Type::X86_FP80TyID:
case Type::FP128TyID:
- C = ConstantFP::get(F->getContext(), APFloat(AV.IntVal));
+ C = ConstantFP::get(F->getContext(), APFloat(ArgTy->getFltSemantics(),
+ AV.IntVal));
break;
case Type::PointerTyID:
void *ArgPtr = GVTOP(AV);
if (sizeof(void*) == 4)
- C = ConstantInt::get(Type::getInt32Ty(F->getContext()),
+ C = ConstantInt::get(Type::getInt32Ty(F->getContext()),
(int)(intptr_t)ArgPtr);
else
C = ConstantInt::get(Type::getInt64Ty(F->getContext()),
Args.push_back(C);
}
- CallInst *TheCall = CallInst::Create(F, Args.begin(), Args.end(),
- "", StubBB);
+ CallInst *TheCall = CallInst::Create(F, Args, "", StubBB);
TheCall->setCallingConv(F->getCallingConv());
TheCall->setTailCall();
- if (TheCall->getType() != Type::getVoidTy(F->getContext()))
+ if (!TheCall->getType()->isVoidTy())
// Return result of the call.
ReturnInst::Create(F->getContext(), TheCall, StubBB);
else
ReturnInst::Create(F->getContext(), StubBB); // Just return void.
- // Finally, return the value returned by our nullary stub function.
- return runFunction(Stub, std::vector<GenericValue>());
+ // Finally, call our nullary stub function.
+ GenericValue Result = runFunction(Stub, std::vector<GenericValue>());
+ // Erase it, since no other function can have a reference to it.
+ Stub->eraseFromParent();
+ // And return the result.
+ return Result;
}
void JIT::RegisterJITEventListener(JITEventListener *L) {
- if (L == NULL)
+ if (!L)
return;
MutexGuard locked(lock);
EventListeners.push_back(L);
}
void JIT::UnregisterJITEventListener(JITEventListener *L) {
- if (L == NULL)
+ if (!L)
return;
MutexGuard locked(lock);
std::vector<JITEventListener*>::reverse_iterator I=
MachineCodeInfo *const MCI;
public:
MCIListener(MachineCodeInfo *mci) : MCI(mci) {}
- virtual void NotifyFunctionEmitted(const Function &,
- void *Code, size_t Size,
- const EmittedFunctionDetails &) {
+ void NotifyFunctionEmitted(const Function &, void *Code, size_t Size,
+ const EmittedFunctionDetails &) override {
MCI->setAddress(Code);
MCI->setSize(Size);
}
};
MCIListener MCIL(MCI);
- RegisterJITEventListener(&MCIL);
+ if (MCI)
+ RegisterJITEventListener(&MCIL);
- runJITOnFunctionUnlocked(F, locked);
+ runJITOnFunctionUnlocked(F);
- UnregisterJITEventListener(&MCIL);
+ if (MCI)
+ UnregisterJITEventListener(&MCIL);
}
-void JIT::runJITOnFunctionUnlocked(Function *F, const MutexGuard &locked) {
- static bool isAlreadyCodeGenerating = false;
+void JIT::runJITOnFunctionUnlocked(Function *F) {
assert(!isAlreadyCodeGenerating && "Error: Recursive compilation detected!");
- // JIT the function
- isAlreadyCodeGenerating = true;
- jitstate->getPM(locked).run(*F);
- isAlreadyCodeGenerating = false;
+ jitTheFunctionUnlocked(F);
// If the function referred to another function that had not yet been
// read from bitcode, and we are jitting non-lazily, emit it now.
- while (!jitstate->getPendingFunctions(locked).empty()) {
- Function *PF = jitstate->getPendingFunctions(locked).back();
- jitstate->getPendingFunctions(locked).pop_back();
+ while (!jitstate->getPendingFunctions().empty()) {
+ Function *PF = jitstate->getPendingFunctions().back();
+ jitstate->getPendingFunctions().pop_back();
assert(!PF->hasAvailableExternallyLinkage() &&
"Externally-defined function should not be in pending list.");
- // JIT the function
- isAlreadyCodeGenerating = true;
- jitstate->getPM(locked).run(*PF);
- isAlreadyCodeGenerating = false;
-
+ jitTheFunctionUnlocked(PF);
+
// Now that the function has been jitted, ask the JITEmitter to rewrite
// the stub with real address of the function.
- updateFunctionStub(PF);
+ updateFunctionStubUnlocked(PF);
}
}
+void JIT::jitTheFunctionUnlocked(Function *F) {
+ isAlreadyCodeGenerating = true;
+ jitstate->getPM().run(*F);
+ isAlreadyCodeGenerating = false;
+
+ // clear basic block addresses after this function is done
+ getBasicBlockAddressMap().clear();
+}
+
/// getPointerToFunction - This method is used to get the address of the
-/// specified function, compiling it if neccesary.
+/// specified function, compiling it if necessary.
///
void *JIT::getPointerToFunction(Function *F) {
// Now that this thread owns the lock, make sure we read in the function if it
// exists in this Module.
std::string ErrorMsg;
- if (materializeFunction(F, &ErrorMsg)) {
- llvm_report_error("Error reading function '" + F->getName()+
+ if (F->Materialize(&ErrorMsg)) {
+ report_fatal_error("Error reading function '" + F->getName()+
"' from bitcode file: " + ErrorMsg);
}
return Addr;
}
- runJITOnFunctionUnlocked(F, locked);
+ runJITOnFunctionUnlocked(F);
void *Addr = getPointerToGlobalIfAvailable(F);
assert(Addr && "Code generation didn't add function to GlobalAddress table!");
return Addr;
}
+void JIT::addPointerToBasicBlock(const BasicBlock *BB, void *Addr) {
+ MutexGuard locked(lock);
+
+ BasicBlockAddressMapTy::iterator I =
+ getBasicBlockAddressMap().find(BB);
+ if (I == getBasicBlockAddressMap().end()) {
+ getBasicBlockAddressMap()[BB] = Addr;
+ } else {
+ // ignore repeats: some BBs can be split into few MBBs?
+ }
+}
+
+void JIT::clearPointerToBasicBlock(const BasicBlock *BB) {
+ MutexGuard locked(lock);
+ getBasicBlockAddressMap().erase(BB);
+}
+
+void *JIT::getPointerToBasicBlock(BasicBlock *BB) {
+ // make sure it's function is compiled by JIT
+ (void)getPointerToFunction(BB->getParent());
+
+ // resolve basic block address
+ MutexGuard locked(lock);
+
+ BasicBlockAddressMapTy::iterator I =
+ getBasicBlockAddressMap().find(BB);
+ if (I != getBasicBlockAddressMap().end()) {
+ return I->second;
+ } else {
+ llvm_unreachable("JIT does not have BB address for address-of-label, was"
+ " it eliminated by optimizer?");
+ }
+}
+
+void *JIT::getPointerToNamedFunction(const std::string &Name,
+ bool AbortOnFailure){
+ if (!isSymbolSearchingDisabled()) {
+ void *ptr = JMM->getPointerToNamedFunction(Name, false);
+ if (ptr)
+ return ptr;
+ }
+
+ /// If a LazyFunctionCreator is installed, use it to get/create the function.
+ if (LazyFunctionCreator)
+ if (void *RP = LazyFunctionCreator(Name))
+ return RP;
+
+ if (AbortOnFailure) {
+ report_fatal_error("Program used external function '"+Name+
+ "' which could not be resolved!");
+ }
+ return nullptr;
+}
+
+
/// getOrEmitGlobalVariable - Return the address of the specified global
/// variable, possibly emitting it to memory if needed. This is used by the
/// Emitter.
return (void*)&__dso_handle;
#endif
Ptr = sys::DynamicLibrary::SearchForAddressOfSymbol(GV->getName());
- if (Ptr == 0) {
- llvm_report_error("Could not resolve external global address: "
+ if (!Ptr) {
+ report_fatal_error("Could not resolve external global address: "
+GV->getName());
}
addGlobalMapping(GV, Ptr);
void *OldAddr = getPointerToGlobalIfAvailable(F);
// If it's not already compiled there is no reason to patch it up.
- if (OldAddr == 0) { return getPointerToFunction(F); }
+ if (!OldAddr) return getPointerToFunction(F);
// Delete the old function mapping.
- addGlobalMapping(F, 0);
+ addGlobalMapping(F, nullptr);
// Recodegen the function
runJITOnFunction(F);
// situation. It's returned in the same block of memory as code which may
// not be writable.
if (isGVCompilationDisabled() && !GV->isConstant()) {
- llvm_report_error("Compilation of non-internal GlobalValue is disabled!");
+ report_fatal_error("Compilation of non-internal GlobalValue is disabled!");
}
// Some applications require globals and code to live together, so they may
// be allocated into the same buffer, but in general globals are allocated
// through the memory manager which puts them near the code but not in the
// same buffer.
- const Type *GlobalType = GV->getType()->getElementType();
- size_t S = getTargetData()->getTypeAllocSize(GlobalType);
- size_t A = getTargetData()->getPreferredAlignment(GV);
+ Type *GlobalType = GV->getType()->getElementType();
+ size_t S = getDataLayout()->getTypeAllocSize(GlobalType);
+ size_t A = getDataLayout()->getPreferredAlignment(GV);
if (GV->isThreadLocal()) {
MutexGuard locked(lock);
Ptr = TJI.allocateThreadLocalMemory(S);
void JIT::addPendingFunction(Function *F) {
MutexGuard locked(lock);
- jitstate->getPendingFunctions(locked).push_back(F);
+ jitstate->getPendingFunctions().push_back(F);
}
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