| //===-- IntelJITEventListener.cpp - Tell Intel profiler about JITed code --===// |
| // |
| // The LLVM Compiler Infrastructure |
| // |
| // This file is distributed under the University of Illinois Open Source |
| // License. See LICENSE.TXT for details. |
| // |
| //===----------------------------------------------------------------------===// |
| // |
| // This file defines a JITEventListener object to tell Intel(R) VTune(TM) |
| // Amplifier XE 2011 about JITted functions. |
| // |
| //===----------------------------------------------------------------------===// |
| |
| #include "llvm/Config/config.h" |
| #include "llvm/ExecutionEngine/JITEventListener.h" |
| |
| #define DEBUG_TYPE "amplifier-jit-event-listener" |
| #include "llvm/Function.h" |
| #include "llvm/Metadata.h" |
| #include "llvm/ADT/DenseMap.h" |
| #include "llvm/ADT/OwningPtr.h" |
| #include "llvm/Analysis/DebugInfo.h" |
| #include "llvm/CodeGen/MachineFunction.h" |
| #include "llvm/ExecutionEngine/IntelJITEventsWrapper.h" |
| #include "llvm/Support/Debug.h" |
| #include "llvm/Support/raw_ostream.h" |
| #include "llvm/Support/Errno.h" |
| #include "llvm/Support/ValueHandle.h" |
| #include "EventListenerCommon.h" |
| |
| using namespace llvm; |
| using namespace llvm::jitprofiling; |
| |
| namespace { |
| |
| class IntelJITEventListener : public JITEventListener { |
| typedef DenseMap<void*, unsigned int> MethodIDMap; |
| |
| IntelJITEventsWrapper& Wrapper; |
| MethodIDMap MethodIDs; |
| FilenameCache Filenames; |
| |
| public: |
| IntelJITEventListener(IntelJITEventsWrapper& libraryWrapper) |
| : Wrapper(libraryWrapper) { |
| } |
| |
| ~IntelJITEventListener() { |
| } |
| |
| virtual void NotifyFunctionEmitted(const Function &F, |
| void *FnStart, size_t FnSize, |
| const EmittedFunctionDetails &Details); |
| |
| virtual void NotifyFreeingMachineCode(void *OldPtr); |
| }; |
| |
| static LineNumberInfo LineStartToIntelJITFormat( |
| uintptr_t StartAddress, |
| uintptr_t Address, |
| DebugLoc Loc) { |
| LineNumberInfo Result; |
| |
| Result.Offset = Address - StartAddress; |
| Result.LineNumber = Loc.getLine(); |
| |
| return Result; |
| } |
| |
| static iJIT_Method_Load FunctionDescToIntelJITFormat( |
| IntelJITEventsWrapper& Wrapper, |
| const char* FnName, |
| uintptr_t FnStart, |
| size_t FnSize) { |
| iJIT_Method_Load Result; |
| memset(&Result, 0, sizeof(iJIT_Method_Load)); |
| |
| Result.method_id = Wrapper.iJIT_GetNewMethodID(); |
| Result.method_name = const_cast<char*>(FnName); |
| Result.method_load_address = reinterpret_cast<void*>(FnStart); |
| Result.method_size = FnSize; |
| |
| Result.class_id = 0; |
| Result.class_file_name = NULL; |
| Result.user_data = NULL; |
| Result.user_data_size = 0; |
| Result.env = iJDE_JittingAPI; |
| |
| return Result; |
| } |
| |
| // Adds the just-emitted function to the symbol table. |
| void IntelJITEventListener::NotifyFunctionEmitted( |
| const Function &F, void *FnStart, size_t FnSize, |
| const EmittedFunctionDetails &Details) { |
| iJIT_Method_Load FunctionMessage = FunctionDescToIntelJITFormat(Wrapper, |
| F.getName().data(), |
| reinterpret_cast<uint64_t>(FnStart), |
| FnSize); |
| |
| std::vector<LineNumberInfo> LineInfo; |
| |
| if (!Details.LineStarts.empty()) { |
| // Now convert the line number information from the address/DebugLoc |
| // format in Details to the offset/lineno in Intel JIT API format. |
| |
| LineInfo.reserve(Details.LineStarts.size() + 1); |
| |
| DebugLoc FirstLoc = Details.LineStarts[0].Loc; |
| assert(!FirstLoc.isUnknown() |
| && "LineStarts should not contain unknown DebugLocs"); |
| |
| MDNode *FirstLocScope = FirstLoc.getScope(F.getContext()); |
| DISubprogram FunctionDI = getDISubprogram(FirstLocScope); |
| if (FunctionDI.Verify()) { |
| FunctionMessage.source_file_name = const_cast<char*>( |
| Filenames.getFullPath(FirstLocScope)); |
| |
| LineNumberInfo FirstLine; |
| FirstLine.Offset = 0; |
| FirstLine.LineNumber = FunctionDI.getLineNumber(); |
| LineInfo.push_back(FirstLine); |
| } |
| |
| for (std::vector<EmittedFunctionDetails::LineStart>::const_iterator I = |
| Details.LineStarts.begin(), E = Details.LineStarts.end(); |
| I != E; ++I) { |
| // This implementation ignores the DebugLoc filename because the Intel |
| // JIT API does not support multiple source files associated with a single |
| // JIT function |
| LineInfo.push_back(LineStartToIntelJITFormat( |
| reinterpret_cast<uintptr_t>(FnStart), |
| I->Address, |
| I->Loc)); |
| |
| // If we have no file name yet for the function, use the filename from |
| // the first instruction that has one |
| if (FunctionMessage.source_file_name == 0) { |
| MDNode *scope = I->Loc.getScope( |
| Details.MF->getFunction()->getContext()); |
| FunctionMessage.source_file_name = const_cast<char*>( |
| Filenames.getFullPath(scope)); |
| } |
| } |
| |
| FunctionMessage.line_number_size = LineInfo.size(); |
| FunctionMessage.line_number_table = &*LineInfo.begin(); |
| } else { |
| FunctionMessage.line_number_size = 0; |
| FunctionMessage.line_number_table = 0; |
| } |
| |
| Wrapper.iJIT_NotifyEvent(iJVM_EVENT_TYPE_METHOD_LOAD_FINISHED, |
| &FunctionMessage); |
| MethodIDs[FnStart] = FunctionMessage.method_id; |
| } |
| |
| void IntelJITEventListener::NotifyFreeingMachineCode(void *FnStart) { |
| MethodIDMap::iterator I = MethodIDs.find(FnStart); |
| if (I != MethodIDs.end()) { |
| Wrapper.iJIT_NotifyEvent(iJVM_EVENT_TYPE_METHOD_UNLOAD_START, &I->second); |
| MethodIDs.erase(I); |
| } |
| } |
| |
| } // anonymous namespace. |
| |
| namespace llvm { |
| JITEventListener *JITEventListener::createIntelJITEventListener() { |
| static OwningPtr<IntelJITEventsWrapper> JITProfilingWrapper( |
| new IntelJITEventsWrapper); |
| return new IntelJITEventListener(*JITProfilingWrapper); |
| } |
| |
| // for testing |
| JITEventListener *JITEventListener::createIntelJITEventListener( |
| IntelJITEventsWrapper* TestImpl) { |
| return new IntelJITEventListener(*TestImpl); |
| } |
| |
| } // namespace llvm |
| |