//===----------------------------------------------------------------------===//
#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/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/ExecutionEngine/JITMemoryManager.h"
-#include "llvm/Target/TargetData.h"
-#include "llvm/Target/TargetMachine.h"
-#include "llvm/Target/TargetJITInfo.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/Support/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;
extern "C" void LLVMLinkInJIT() {
}
-// Determine whether we can register EH tables.
-#if (defined(__GNUC__) && !defined(__ARM_EABI__) && \
- !defined(__USING_SJLJ_EXCEPTIONS__))
-#define HAVE_EHTABLE_SUPPORT 1
-#else
-#define HAVE_EHTABLE_SUPPORT 0
-#endif
-
-#if HAVE_EHTABLE_SUPPORT
-
-// 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*);
-extern "C" void __deregister_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 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 // HAVE_EHTABLE_SUPPORT
-
/// 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.
// Try to register the program as a source of symbols to resolve against.
//
// FIXME: Don't do this here.
- sys::DynamicLibrary::LoadLibraryPermanently(0, NULL);
+ sys::DynamicLibrary::LoadLibraryPermanently(nullptr, nullptr);
// If the target supports JIT code generation, create the JIT.
- if (TargetJITInfo *TJ = TM->getJITInfo()) {
+ 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;
}
}
: ExecutionEngine(M), TM(tm), TJI(tji),
JMM(jmm ? jmm : JITMemoryManager::CreateDefaultMemManager()),
AllocateGVsWithCode(GVsWithCode), isAlreadyCodeGenerating(false) {
- setTargetData(TM.getTargetData());
+ setDataLayout(TM.getSubtargetImpl()->getDataLayout());
jitstate = new JITState(M);
// 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)) {
+ 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 HAVE_EHTABLE_SUPPORT
-#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);
- // Not sure about how to deregister on Darwin.
-#else
- InstallExceptionTableRegister(__register_frame);
- InstallExceptionTableDeregister(__deregister_frame);
-#endif // __APPLE__
-#endif // HAVE_EHTABLE_SUPPORT
-
// Initialize passes.
PM.doInitialization();
}
JIT::~JIT() {
- // Unregister all exception tables registered by this JIT.
- DeregisterAllTables();
// Cleanup.
AllJits->Remove(this);
delete jitstate;
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)) {
+ if (TM.addPassesToEmitMachineCode(PM, *JCE, !getVerifyModules())) {
report_fatal_error("Target does not support machine code emission!");
}
MutexGuard locked(lock);
- if (jitstate->getModule() == M) {
+ 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)) {
+ if (TM.addPassesToEmitMachineCode(PM, *JCE, !getVerifyModules())) {
report_fatal_error("Target does not support machine code emission!");
}
}
break;
case 1:
- if (FTy->getNumParams() == 1 &&
- FTy->getParamType(0)->isIntegerTy(32)) {
+ 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;
}
}
// currently don't support varargs.
SmallVector<Value*, 8> Args;
for (unsigned i = 0, e = ArgValues.size(); i != e; ++i) {
- Constant *C = 0;
+ Constant *C = nullptr;
Type *ArgTy = FTy->getParamType(i);
const GenericValue &AV = ArgValues[i];
switch (ArgTy->getTypeID()) {
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);
}
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);
}
if (MCI)
RegisterJITEventListener(&MCIL);
- runJITOnFunctionUnlocked(F, locked);
+ runJITOnFunctionUnlocked(F);
if (MCI)
UnregisterJITEventListener(&MCIL);
}
-void JIT::runJITOnFunctionUnlocked(Function *F, const MutexGuard &locked) {
+void JIT::runJITOnFunctionUnlocked(Function *F) {
assert(!isAlreadyCodeGenerating && "Error: Recursive compilation detected!");
- jitTheFunction(F, locked);
+ 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.");
- jitTheFunction(PF, locked);
+ 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::jitTheFunction(Function *F, const MutexGuard &locked) {
+void JIT::jitTheFunctionUnlocked(Function *F) {
isAlreadyCodeGenerating = true;
- jitstate->getPM(locked).run(*F);
+ jitstate->getPM().run(*F);
isAlreadyCodeGenerating = false;
// clear basic block addresses after this function is done
- getBasicBlockAddressMap(locked).clear();
+ getBasicBlockAddressMap().clear();
}
/// getPointerToFunction - This method is used to get the address of the
return Addr;
}
- runJITOnFunctionUnlocked(F, locked);
+ runJITOnFunctionUnlocked(F);
void *Addr = getPointerToGlobalIfAvailable(F);
assert(Addr && "Code generation didn't add function to GlobalAddress table!");
MutexGuard locked(lock);
BasicBlockAddressMapTy::iterator I =
- getBasicBlockAddressMap(locked).find(BB);
- if (I == getBasicBlockAddressMap(locked).end()) {
- getBasicBlockAddressMap(locked)[BB] = Addr;
+ 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(locked).erase(BB);
+ getBasicBlockAddressMap().erase(BB);
}
void *JIT::getPointerToBasicBlock(BasicBlock *BB) {
MutexGuard locked(lock);
BasicBlockAddressMapTy::iterator I =
- getBasicBlockAddressMap(locked).find(BB);
- if (I != getBasicBlockAddressMap(locked).end()) {
+ getBasicBlockAddressMap().find(BB);
+ if (I != getBasicBlockAddressMap().end()) {
return I->second;
} else {
llvm_unreachable("JIT does not have BB address for address-of-label, was"
report_fatal_error("Program used external function '"+Name+
"' which could not be resolved!");
}
- return 0;
+ return nullptr;
}
return (void*)&__dso_handle;
#endif
Ptr = sys::DynamicLibrary::SearchForAddressOfSymbol(GV->getName());
- if (Ptr == 0) {
+ if (!Ptr) {
report_fatal_error("Could not resolve external global address: "
+GV->getName());
}
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);
// through the memory manager which puts them near the code but not in the
// same buffer.
Type *GlobalType = GV->getType()->getElementType();
- size_t S = getTargetData()->getTypeAllocSize(GlobalType);
- size_t A = getTargetData()->getPreferredAlignment(GV);
+ 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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