/*
 * Copyright (C) 2018-2020 Intel Corporation
 *
 * SPDX-License-Identifier: MIT
 *
 */

#include "offline_compiler.h"

#include "core/debug_settings/debug_settings_manager.h"
#include "core/device_binary_format/device_binary_formats.h"
#include "core/device_binary_format/elf/elf_encoder.h"
#include "core/device_binary_format/elf/ocl_elf.h"
#include "core/helpers/debug_helpers.h"
#include "core/helpers/file_io.h"
#include "core/helpers/hw_info.h"
#include "core/helpers/string.h"
#include "core/os_interface/os_library.h"
#include "runtime/helpers/validators.h"
#include "runtime/os_interface/os_inc_base.h"
#include "runtime/platform/extensions.h"

#include "cif/common/cif_main.h"
#include "cif/helpers/error.h"
#include "cif/import/library_api.h"
#include "compiler_options.h"
#include "igfxfmid.h"
#include "ocl_igc_interface/code_type.h"
#include "ocl_igc_interface/fcl_ocl_device_ctx.h"
#include "ocl_igc_interface/igc_ocl_device_ctx.h"
#include "ocl_igc_interface/platform_helper.h"

#include <algorithm>
#include <iomanip>
#include <iostream>
#include <list>

#ifdef _WIN32
#include <direct.h>
#define MakeDirectory _mkdir
#define GetCurrentWorkingDirectory _getcwd
#else
#include <sys/stat.h>
#define MakeDirectory(dir) mkdir(dir, 0777)
#define GetCurrentWorkingDirectory getcwd
#endif

namespace NEO {

CIF::CIFMain *createMainNoSanitize(CIF::CreateCIFMainFunc_t createFunc);

std::string convertToPascalCase(const std::string &inString) {
    std::string outString;
    bool capitalize = true;

    for (unsigned int i = 0; i < inString.length(); i++) {
        if (isalpha(inString[i]) && capitalize == true) {
            outString += toupper(inString[i]);
            capitalize = false;
        } else if (inString[i] == '_') {
            capitalize = true;
        } else {
            outString += inString[i];
        }
    }
    return outString;
}

OfflineCompiler::OfflineCompiler() = default;
OfflineCompiler::~OfflineCompiler() {
    delete[] irBinary;
    delete[] genBinary;
}

OfflineCompiler *OfflineCompiler::create(size_t numArgs, const std::vector<std::string> &allArgs, bool dumpFiles, int &retVal) {
    retVal = CL_SUCCESS;
    auto pOffCompiler = new OfflineCompiler();

    if (pOffCompiler) {
        retVal = pOffCompiler->initialize(numArgs, allArgs, dumpFiles);
    }

    if (retVal != CL_SUCCESS) {
        delete pOffCompiler;
        pOffCompiler = nullptr;
    }

    return pOffCompiler;
}

int OfflineCompiler::buildSourceCode() {
    int retVal = CL_SUCCESS;

    do {
        if (strcmp(sourceCode.c_str(), "") == 0) {
            retVal = CL_INVALID_PROGRAM;
            break;
        }
        UNRECOVERABLE_IF(igcDeviceCtx == nullptr);

        CIF::RAII::UPtr_t<IGC::OclTranslationOutputTagOCL> igcOutput;
        bool inputIsIntermediateRepresentation = inputFileLlvm || inputFileSpirV;
        if (false == inputIsIntermediateRepresentation) {
            UNRECOVERABLE_IF(fclDeviceCtx == nullptr);
            IGC::CodeType::CodeType_t intermediateRepresentation = useLlvmText ? IGC::CodeType::llvmLl
                                                                               : (useLlvmBc ? IGC::CodeType::llvmBc : preferredIntermediateRepresentation);
            // sourceCode.size() returns the number of characters without null terminated char
            auto fclSrc = CIF::Builtins::CreateConstBuffer(fclMain.get(), sourceCode.c_str(), sourceCode.size() + 1);
            auto fclOptions = CIF::Builtins::CreateConstBuffer(fclMain.get(), options.c_str(), options.size());
            auto fclInternalOptions = CIF::Builtins::CreateConstBuffer(fclMain.get(), internalOptions.c_str(), internalOptions.size());

            auto fclTranslationCtx = fclDeviceCtx->CreateTranslationCtx(IGC::CodeType::oclC, intermediateRepresentation);
            auto igcTranslationCtx = igcDeviceCtx->CreateTranslationCtx(intermediateRepresentation, IGC::CodeType::oclGenBin);

            if (false == NEO::areNotNullptr(fclSrc.get(), fclOptions.get(), fclInternalOptions.get(),
                                            fclTranslationCtx.get(), igcTranslationCtx.get())) {
                retVal = CL_OUT_OF_HOST_MEMORY;
                break;
            }

            auto fclOutput = fclTranslationCtx->Translate(fclSrc.get(), fclOptions.get(),
                                                          fclInternalOptions.get(), nullptr, 0);

            if (fclOutput == nullptr) {
                retVal = CL_OUT_OF_HOST_MEMORY;
                break;
            }

            UNRECOVERABLE_IF(fclOutput->GetBuildLog() == nullptr);
            UNRECOVERABLE_IF(fclOutput->GetOutput() == nullptr);

            if (fclOutput->Successful() == false) {
                updateBuildLog(fclOutput->GetBuildLog()->GetMemory<char>(), fclOutput->GetBuildLog()->GetSizeRaw());
                retVal = CL_BUILD_PROGRAM_FAILURE;
                break;
            }

            storeBinary(irBinary, irBinarySize, fclOutput->GetOutput()->GetMemory<char>(), fclOutput->GetOutput()->GetSizeRaw());
            isSpirV = intermediateRepresentation == IGC::CodeType::spirV;
            updateBuildLog(fclOutput->GetBuildLog()->GetMemory<char>(), fclOutput->GetBuildLog()->GetSizeRaw());

            igcOutput = igcTranslationCtx->Translate(fclOutput->GetOutput(), fclOptions.get(),
                                                     fclInternalOptions.get(),
                                                     nullptr, 0);

        } else {
            auto igcSrc = CIF::Builtins::CreateConstBuffer(igcMain.get(), sourceCode.c_str(), sourceCode.size());
            auto igcOptions = CIF::Builtins::CreateConstBuffer(igcMain.get(), options.c_str(), options.size());
            auto igcInternalOptions = CIF::Builtins::CreateConstBuffer(igcMain.get(), internalOptions.c_str(), internalOptions.size());
            auto igcTranslationCtx = igcDeviceCtx->CreateTranslationCtx(inputFileSpirV ? IGC::CodeType::spirV : IGC::CodeType::llvmBc, IGC::CodeType::oclGenBin);
            igcOutput = igcTranslationCtx->Translate(igcSrc.get(), igcOptions.get(), igcInternalOptions.get(), nullptr, 0);
        }
        if (igcOutput == nullptr) {
            retVal = CL_OUT_OF_HOST_MEMORY;
            break;
        }
        UNRECOVERABLE_IF(igcOutput->GetBuildLog() == nullptr);
        UNRECOVERABLE_IF(igcOutput->GetOutput() == nullptr);
        updateBuildLog(igcOutput->GetBuildLog()->GetMemory<char>(), igcOutput->GetBuildLog()->GetSizeRaw());

        if (igcOutput->GetOutput()->GetSizeRaw() != 0) {
            storeBinary(genBinary, genBinarySize, igcOutput->GetOutput()->GetMemory<char>(), igcOutput->GetOutput()->GetSizeRaw());
        }
        if (igcOutput->GetDebugData()->GetSizeRaw() != 0) {
            storeBinary(debugDataBinary, debugDataBinarySize, igcOutput->GetDebugData()->GetMemory<char>(), igcOutput->GetDebugData()->GetSizeRaw());
        }
        retVal = igcOutput->Successful() ? CL_SUCCESS : CL_BUILD_PROGRAM_FAILURE;
    } while (0);

    return retVal;
}

int OfflineCompiler::build() {
    int retVal = CL_SUCCESS;

    retVal = buildSourceCode();

    if (retVal == CL_SUCCESS) {
        generateElfBinary();
        if (dumpFiles) {
            writeOutAllFiles();
        }
    }

    return retVal;
}

void OfflineCompiler::updateBuildLog(const char *pErrorString, const size_t errorStringSize) {
    std::string errorString = (errorStringSize && pErrorString) ? std::string(pErrorString, pErrorString + errorStringSize) : "";
    if (errorString[0] != '\0') {
        if (buildLog.empty()) {
            buildLog.assign(errorString);
        } else {
            buildLog.append("\n" + errorString);
        }
    }
}

std::string &OfflineCompiler::getBuildLog() {
    return buildLog;
}

int OfflineCompiler::getHardwareInfo(const char *pDeviceName) {
    int retVal = CL_INVALID_DEVICE;

    for (unsigned int productId = 0; productId < IGFX_MAX_PRODUCT; ++productId) {
        if (hardwarePrefix[productId] && (0 == strcmp(pDeviceName, hardwarePrefix[productId]))) {
            if (hardwareInfoTable[productId]) {
                hwInfo = hardwareInfoTable[productId];
                familyNameWithType.clear();
                familyNameWithType.append(familyName[hwInfo->platform.eRenderCoreFamily]);
                familyNameWithType.append(hwInfo->capabilityTable.platformType);
                retVal = CL_SUCCESS;
                break;
            }
        }
    }

    return retVal;
}

std::string OfflineCompiler::getStringWithinDelimiters(const std::string &src) {
    size_t start = src.find("R\"===(");
    size_t stop = src.find(")===\"");

    DEBUG_BREAK_IF(std::string::npos == start);
    DEBUG_BREAK_IF(std::string::npos == stop);

    start += strlen("R\"===(");
    size_t size = stop - start;

    std::string dst(src, start, size + 1);
    dst[size] = '\0'; // put null char at the end

    return dst;
}

int OfflineCompiler::initialize(size_t numArgs, const std::vector<std::string> &allArgs, bool dumpFiles) {
    this->dumpFiles = dumpFiles;
    int retVal = CL_SUCCESS;
    const char *source = nullptr;
    std::unique_ptr<char[]> sourceFromFile;
    size_t sourceFromFileSize = 0;

    retVal = parseCommandLine(numArgs, allArgs);
    if (retVal != CL_SUCCESS) {
        return retVal;
    }

    if (options.empty()) {
        // try to read options from file if not provided by commandline
        size_t ext_start = inputFile.find(".cl");
        if (ext_start != std::string::npos) {
            std::string oclocOptionsFileName = inputFile.substr(0, ext_start);
            oclocOptionsFileName.append("_ocloc_options.txt");

            std::string oclocOptionsFromFile;
            bool oclocOptionsRead = readOptionsFromFile(oclocOptionsFromFile, oclocOptionsFileName);
            if (oclocOptionsRead && !isQuiet()) {
                printf("Building with ocloc options:\n%s\n", oclocOptionsFromFile.c_str());
            }

            if (oclocOptionsRead) {
                std::istringstream iss(allArgs[0] + " " + oclocOptionsFromFile);
                std::vector<std::string> tokens{
                    std::istream_iterator<std::string>{iss}, std::istream_iterator<std::string>{}};

                retVal = parseCommandLine(tokens.size(), tokens);
                if (retVal != CL_SUCCESS) {
                    return retVal;
                }
            }

            std::string optionsFileName = inputFile.substr(0, ext_start);
            optionsFileName.append("_options.txt");

            bool optionsRead = readOptionsFromFile(options, optionsFileName);
            if (optionsRead && !isQuiet()) {
                printf("Building with options:\n%s\n", options.c_str());
            }

            std::string internalOptionsFileName = inputFile.substr(0, ext_start);
            internalOptionsFileName.append("_internal_options.txt");

            std::string internalOptionsFromFile;
            bool internalOptionsRead = readOptionsFromFile(internalOptionsFromFile, internalOptionsFileName);
            if (internalOptionsRead && !isQuiet()) {
                printf("Building with internal options:\n%s\n", internalOptionsFromFile.c_str());
            }
            CompilerOptions::concatenateAppend(internalOptions, internalOptionsFromFile);
        }
    }

    parseDebugSettings();

    // set up the device inside the program
    sourceFromFile = loadDataFromFile(inputFile.c_str(), sourceFromFileSize);
    if (sourceFromFileSize == 0) {
        retVal = INVALID_FILE;
        return retVal;
    }

    if (inputFileLlvm || inputFileSpirV) {
        // use the binary input "as is"
        sourceCode.assign(sourceFromFile.get(), sourceFromFileSize);
    } else {
        // for text input, we also accept files used as runtime builtins
        source = strstr((const char *)sourceFromFile.get(), "R\"===(");
        sourceCode = (source != nullptr) ? getStringWithinDelimiters(sourceFromFile.get()) : sourceFromFile.get();
    }

    if ((inputFileSpirV == false) && (inputFileLlvm == false)) {
        auto fclLibFile = OsLibrary::load(Os::frontEndDllName);
        if (fclLibFile == nullptr) {
            printf("Error: Failed to load %s\n", Os::frontEndDllName);
            return CL_OUT_OF_HOST_MEMORY;
        }

        this->fclLib.reset(fclLibFile);
        if (this->fclLib == nullptr) {
            return CL_OUT_OF_HOST_MEMORY;
        }

        auto fclCreateMain = reinterpret_cast<CIF::CreateCIFMainFunc_t>(this->fclLib->getProcAddress(CIF::CreateCIFMainFuncName));
        if (fclCreateMain == nullptr) {
            return CL_OUT_OF_HOST_MEMORY;
        }

        this->fclMain = CIF::RAII::UPtr(createMainNoSanitize(fclCreateMain));
        if (this->fclMain == nullptr) {
            return CL_OUT_OF_HOST_MEMORY;
        }

        if (false == this->fclMain->IsCompatible<IGC::FclOclDeviceCtx>()) {
            printf("Incompatible interface in FCL : %s\n", CIF::InterfaceIdCoder::Dec(this->fclMain->FindIncompatible<IGC::FclOclDeviceCtx>()).c_str());
            DEBUG_BREAK_IF(true);
            return CL_OUT_OF_HOST_MEMORY;
        }

        this->fclDeviceCtx = this->fclMain->CreateInterface<IGC::FclOclDeviceCtxTagOCL>();
        if (this->fclDeviceCtx == nullptr) {
            return CL_OUT_OF_HOST_MEMORY;
        }

        fclDeviceCtx->SetOclApiVersion(hwInfo->capabilityTable.clVersionSupport * 10);
        preferredIntermediateRepresentation = fclDeviceCtx->GetPreferredIntermediateRepresentation();
    } else {
        if (!isQuiet()) {
            printf("Compilation from IR - skipping loading of FCL\n");
        }
        preferredIntermediateRepresentation = IGC::CodeType::spirV;
    }

    this->igcLib.reset(OsLibrary::load(Os::igcDllName));
    if (this->igcLib == nullptr) {
        return CL_OUT_OF_HOST_MEMORY;
    }

    auto igcCreateMain = reinterpret_cast<CIF::CreateCIFMainFunc_t>(this->igcLib->getProcAddress(CIF::CreateCIFMainFuncName));
    if (igcCreateMain == nullptr) {
        return CL_OUT_OF_HOST_MEMORY;
    }

    this->igcMain = CIF::RAII::UPtr(createMainNoSanitize(igcCreateMain));
    if (this->igcMain == nullptr) {
        return CL_OUT_OF_HOST_MEMORY;
    }

    std::vector<CIF::InterfaceId_t> interfacesToIgnore = {IGC::OclGenBinaryBase::GetInterfaceId()};
    if (false == this->igcMain->IsCompatible<IGC::IgcOclDeviceCtx>(&interfacesToIgnore)) {
        printf("Incompatible interface in IGC : %s\n", CIF::InterfaceIdCoder::Dec(this->igcMain->FindIncompatible<IGC::IgcOclDeviceCtx>(&interfacesToIgnore)).c_str());
        DEBUG_BREAK_IF(true);
        return CL_OUT_OF_HOST_MEMORY;
    }

    CIF::Version_t verMin = 0, verMax = 0;
    if (false == this->igcMain->FindSupportedVersions<IGC::IgcOclDeviceCtx>(IGC::OclGenBinaryBase::GetInterfaceId(), verMin, verMax)) {
        printf("Patchtoken interface is missing");
        return CL_OUT_OF_HOST_MEMORY;
    }

    this->igcDeviceCtx = this->igcMain->CreateInterface<IGC::IgcOclDeviceCtxTagOCL>();
    if (this->igcDeviceCtx == nullptr) {
        return CL_OUT_OF_HOST_MEMORY;
    }
    this->igcDeviceCtx->SetProfilingTimerResolution(static_cast<float>(hwInfo->capabilityTable.defaultProfilingTimerResolution));
    auto igcPlatform = this->igcDeviceCtx->GetPlatformHandle();
    auto igcGtSystemInfo = this->igcDeviceCtx->GetGTSystemInfoHandle();
    auto igcFeWa = this->igcDeviceCtx->GetIgcFeaturesAndWorkaroundsHandle();
    if ((igcPlatform == nullptr) || (igcGtSystemInfo == nullptr) || (igcFeWa == nullptr)) {
        return CL_OUT_OF_HOST_MEMORY;
    }
    IGC::PlatformHelper::PopulateInterfaceWith(*igcPlatform.get(), hwInfo->platform);
    IGC::GtSysInfoHelper::PopulateInterfaceWith(*igcGtSystemInfo.get(), hwInfo->gtSystemInfo);
    // populate with features
    igcFeWa.get()->SetFtrDesktop(hwInfo->featureTable.ftrDesktop);
    igcFeWa.get()->SetFtrChannelSwizzlingXOREnabled(hwInfo->featureTable.ftrChannelSwizzlingXOREnabled);

    igcFeWa.get()->SetFtrGtBigDie(hwInfo->featureTable.ftrGtBigDie);
    igcFeWa.get()->SetFtrGtMediumDie(hwInfo->featureTable.ftrGtMediumDie);
    igcFeWa.get()->SetFtrGtSmallDie(hwInfo->featureTable.ftrGtSmallDie);

    igcFeWa.get()->SetFtrGT1(hwInfo->featureTable.ftrGT1);
    igcFeWa.get()->SetFtrGT1_5(hwInfo->featureTable.ftrGT1_5);
    igcFeWa.get()->SetFtrGT2(hwInfo->featureTable.ftrGT2);
    igcFeWa.get()->SetFtrGT3(hwInfo->featureTable.ftrGT3);
    igcFeWa.get()->SetFtrGT4(hwInfo->featureTable.ftrGT4);

    igcFeWa.get()->SetFtrIVBM0M1Platform(hwInfo->featureTable.ftrIVBM0M1Platform);
    igcFeWa.get()->SetFtrGTL(hwInfo->featureTable.ftrGT1);
    igcFeWa.get()->SetFtrGTM(hwInfo->featureTable.ftrGT2);
    igcFeWa.get()->SetFtrGTH(hwInfo->featureTable.ftrGT3);

    igcFeWa.get()->SetFtrSGTPVSKUStrapPresent(hwInfo->featureTable.ftrSGTPVSKUStrapPresent);
    igcFeWa.get()->SetFtrGTA(hwInfo->featureTable.ftrGTA);
    igcFeWa.get()->SetFtrGTC(hwInfo->featureTable.ftrGTC);
    igcFeWa.get()->SetFtrGTX(hwInfo->featureTable.ftrGTX);
    igcFeWa.get()->SetFtr5Slice(hwInfo->featureTable.ftr5Slice);

    igcFeWa.get()->SetFtrGpGpuMidThreadLevelPreempt(hwInfo->featureTable.ftrGpGpuMidThreadLevelPreempt);
    igcFeWa.get()->SetFtrIoMmuPageFaulting(hwInfo->featureTable.ftrIoMmuPageFaulting);
    igcFeWa.get()->SetFtrWddm2Svm(hwInfo->featureTable.ftrWddm2Svm);
    igcFeWa.get()->SetFtrPooledEuEnabled(hwInfo->featureTable.ftrPooledEuEnabled);

    igcFeWa.get()->SetFtrResourceStreamer(hwInfo->featureTable.ftrResourceStreamer);

    return retVal;
}

int OfflineCompiler::parseCommandLine(size_t numArgs, const std::vector<std::string> &argv) {
    int retVal = CL_SUCCESS;
    bool compile32 = false;
    bool compile64 = false;

    if (numArgs < 2) {
        printUsage();
        retVal = PRINT_USAGE;
    }

    for (uint32_t argIndex = 1; argIndex < numArgs; argIndex++) {
        const auto &currArg = argv[argIndex];
        const bool hasMoreArgs = (argIndex + 1 < numArgs);
        if ("compile" == currArg) {
            //skip it
        } else if (("-file" == currArg) && hasMoreArgs) {
            inputFile = argv[argIndex + 1];
            argIndex++;
        } else if (("-output" == currArg) && hasMoreArgs) {
            outputFile = argv[argIndex + 1];
            argIndex++;
        } else if ((CompilerOptions::arch32bit == currArg) || ("-32" == currArg)) {
            compile32 = true;
            CompilerOptions::concatenateAppend(internalOptions, CompilerOptions::arch32bit);
        } else if ((CompilerOptions::arch64bit == currArg) || ("-64" == currArg)) {
            compile64 = true;
            CompilerOptions::concatenateAppend(internalOptions, CompilerOptions::arch64bit);
        } else if (CompilerOptions::greaterThan4gbBuffersRequired == currArg) {
            CompilerOptions::concatenateAppend(internalOptions, CompilerOptions::greaterThan4gbBuffersRequired);
        } else if (("-device" == currArg) && hasMoreArgs) {
            deviceName = argv[argIndex + 1];
            argIndex++;
        } else if ("-llvm_text" == currArg) {
            useLlvmText = true;
        } else if ("-llvm_bc" == currArg) {
            useLlvmBc = true;
        } else if ("-llvm_input" == currArg) {
            inputFileLlvm = true;
        } else if ("-spirv_input" == currArg) {
            inputFileSpirV = true;
        } else if ("-cpp_file" == currArg) {
            useCppFile = true;
        } else if (("-options" == currArg) && hasMoreArgs) {
            options = argv[argIndex + 1];
            argIndex++;
        } else if (("-internal_options" == currArg) && hasMoreArgs) {
            CompilerOptions::concatenateAppend(internalOptions, argv[argIndex + 1]);
            argIndex++;
        } else if ("-options_name" == currArg) {
            useOptionsSuffix = true;
        } else if ("-force_stos_opt" == currArg) {
            forceStatelessToStatefulOptimization = true;
        } else if (("-out_dir" == currArg) && hasMoreArgs) {
            outputDirectory = argv[argIndex + 1];
            argIndex++;
        } else if ("-q" == currArg) {
            quiet = true;
        } else if ("-output_no_suffix" == currArg) {
            outputNoSuffix = true;
        } else if ("--help" == currArg) {
            printUsage();
            retVal = PRINT_USAGE;
        } else {
            printf("Invalid option (arg %d): %s\n", argIndex, argv[argIndex].c_str());
            retVal = INVALID_COMMAND_LINE;
            break;
        }
    }

    if (retVal == CL_SUCCESS) {
        if (compile32 && compile64) {
            printf("Error: Cannot compile for 32-bit and 64-bit, please choose one.\n");
            retVal = INVALID_COMMAND_LINE;
        } else if (inputFile.empty()) {
            printf("Error: Input file name missing.\n");
            retVal = INVALID_COMMAND_LINE;
        } else if (deviceName.empty()) {
            printf("Error: Device name missing.\n");
            retVal = INVALID_COMMAND_LINE;
        } else if (!fileExists(inputFile)) {
            printf("Error: Input file %s missing.\n", inputFile.c_str());
            retVal = INVALID_FILE;
        } else {
            retVal = getHardwareInfo(deviceName.c_str());
            if (retVal != CL_SUCCESS) {
                printf("Error: Cannot get HW Info for device %s.\n", deviceName.c_str());
            } else {
                std::string extensionsList = getExtensionsList(*hwInfo);
                CompilerOptions::concatenateAppend(internalOptions, convertEnabledExtensionsToCompilerInternalOptions(extensionsList.c_str()));
            }
        }
    }

    return retVal;
}

void OfflineCompiler::setStatelessToStatefullBufferOffsetFlag() {
    bool isStatelessToStatefulBufferOffsetSupported = true;
    if (deviceName == "bdw") {
        isStatelessToStatefulBufferOffsetSupported = false;
    }
    if (DebugManager.flags.EnableStatelessToStatefulBufferOffsetOpt.get() != -1) {
        isStatelessToStatefulBufferOffsetSupported = DebugManager.flags.EnableStatelessToStatefulBufferOffsetOpt.get() != 0;
    }
    if (isStatelessToStatefulBufferOffsetSupported) {
        CompilerOptions::concatenateAppend(internalOptions, CompilerOptions::hasBufferOffsetArg);
    }
}

void OfflineCompiler::parseDebugSettings() {
    setStatelessToStatefullBufferOffsetFlag();
    resolveExtraSettings();
}

std::string OfflineCompiler::parseBinAsCharArray(uint8_t *binary, size_t size, std::string &fileName) {
    std::string builtinName = convertToPascalCase(fileName);
    std::ostringstream out;

    // Convert binary to cpp
    out << "#include <cstddef>\n";
    out << "#include <cstdint>\n\n";
    out << "size_t " << builtinName << "BinarySize_" << familyNameWithType << " = " << size << ";\n";
    out << "uint32_t " << builtinName << "Binary_" << familyNameWithType << "[" << (size + 3) / 4 << "] = {"
        << std::endl
        << "    ";

    uint32_t *binaryUint = (uint32_t *)binary;
    for (size_t i = 0; i < (size + 3) / 4; i++) {
        if (i != 0) {
            out << ", ";
            if (i % 8 == 0) {
                out << std::endl
                    << "    ";
            }
        }
        if (i < size / 4) {
            out << "0x" << std::hex << std::setw(8) << std::setfill('0') << binaryUint[i];
        } else {
            uint32_t lastBytes = size & 0x3;
            uint32_t lastUint = 0;
            uint8_t *pLastUint = (uint8_t *)&lastUint;
            for (uint32_t j = 0; j < lastBytes; j++) {
                pLastUint[sizeof(uint32_t) - 1 - j] = binary[i * 4 + j];
            }
            out << "0x" << std::hex << std::setw(8) << std::setfill('0') << lastUint;
        }
    }
    out << "};" << std::endl;

    out << std::endl
        << "#include \"runtime/built_ins/registry/built_ins_registry.h\"\n"
        << std::endl;
    out << "namespace NEO {" << std::endl;
    out << "static RegisterEmbeddedResource register" << builtinName << "Bin(" << std::endl;
    out << "    createBuiltinResourceName(" << std::endl;
    out << "        EBuiltInOps::" << builtinName << "," << std::endl;
    out << "        BuiltinCode::getExtension(BuiltinCode::ECodeType::Binary), \"" << familyNameWithType << "\", 0)" << std::endl;
    out << "        .c_str()," << std::endl;
    out << "    (const char *)" << builtinName << "Binary"
        << "_" << familyNameWithType << "," << std::endl;
    out << "    " << builtinName << "BinarySize_" << familyNameWithType << ");" << std::endl;
    out << "}" << std::endl;

    return out.str();
}

std::string OfflineCompiler::getFileNameTrunk(std::string &filePath) {
    size_t slashPos = filePath.find_last_of("\\/", filePath.size()) + 1;
    size_t extPos = filePath.find_last_of(".", filePath.size());
    if (extPos == std::string::npos) {
        extPos = filePath.size();
    }

    std::string fileTrunk = filePath.substr(slashPos, (extPos - slashPos));

    return fileTrunk;
}
//
std::string getDevicesTypes() {
    std::list<std::string> prefixes;
    for (int j = 0; j < IGFX_MAX_PRODUCT; j++) {
        if (hardwarePrefix[j] == nullptr)
            continue;
        prefixes.push_back(hardwarePrefix[j]);
    }

    std::ostringstream os;
    for (auto it = prefixes.begin(); it != prefixes.end(); it++) {
        if (it != prefixes.begin())
            os << ",";
        os << *it;
    }

    return os.str();
}

void OfflineCompiler::printUsage() {
    printf(R"===(Compiles input file to Intel OpenCL GPU device binary (*.bin).
Additionally, outputs intermediate representation (e.g. spirV).
Different input and intermediate file formats are available.

Usage: ocloc [compile] -file <filename> -device <device_type> [-output <filename>] [-out_dir <output_dir>] [-options <options>] [-32|-64] [-internal_options <options>] [-llvm_text|-llvm_input|-spirv_input] [-options_name] [-q] [-cpp_file] [-output_no_suffix] [--help]

  -file <filename>              The input file to be compiled
                                (by default input source format is
                                OpenCL C kernel language).
                                
  -device <device_type>         Target device.
                                <device_type> can be: %s
                                If multiple target devices are provided, ocloc
                                will compile for each of these targets and will
                                create a fatbinary archive that contains all of
                                device binaries produced this way.
                                Supported -device patterns examples :
                                -device skl        ; will compile 1 target
                                -device skl,icllp  ; will compile 2 targets
                                -device skl-icllp  ; will compile all targets
                                                     in range (inclusive)
                                -device skl-       ; will compile all targets
                                                     newer/same as provided
                                -device -skl       ; will compile all targets
                                                     older/same as provided
                                -device gen9       ; will compile all targets
                                                     matching the same gen
                                -device gen9-gen11 ; will compile all targets
                                                     in range (inclusive)
                                -device gen9-      ; will compile all targets
                                                     newer/same as provided
                                -device -gen9      ; will compile all targets
                                                     older/same as provided
                                -device *          ; will compile all targets
                                                     known to ocloc

  -output <filename>            Optional output file base name.
                                Default is input file's base name.
                                This base name will be used for all output
                                files. Proper sufixes (describing file formats)
                                will be added automatically.

  -out_dir <output_dir>         Optional output directory.
                                Default is current working directory.

  -options <options>            Optional OpenCL C compilation options
                                as defined by OpenCL specification.

  -32                           Forces target architecture to 32-bit pointers.
                                Default pointer size is inherited from
                                ocloc's pointer size.         
                                This option is exclusive with -64.

  -64                           Forces target architecture to 64-bit pointers.
                                Default pointer size is inherited from
                                ocloc's pointer size.
                                This option is exclusive with -32.

  -internal_options <options>   Optional compiler internal options
                                as defined by compilers used underneath.
                                Check intel-graphics-compiler (IGC) project
                                for details on available internal options.

  -llvm_text                    Forces intermediate representation (IR) format
                                to human-readable LLVM IR (.ll).
                                This option affects only output files
                                and should not be used in combination with
                                '-llvm_input' option.
                                Default IR is spirV.
                                This option is exclusive with -spirv_input.
                                This option is exclusive with -llvm_input.

  -llvm_input                   Indicates that input file is an llvm binary.
                                Default is OpenCL C kernel language.
                                This option is exclusive with -spirv_input.
                                This option is exclusive with -llvm_text.

  -spirv_input                  Indicates that input file is a spirV binary.
                                Default is OpenCL C kernel language format.
                                This option is exclusive with -llvm_input.
                                This option is exclusive with -llvm_text.

  -options_name                 Will add suffix to output files.
                                This suffix will be generated based on input
                                options (useful when rebuilding with different 
                                set of options so that results won't get
                                overwritten).
                                This suffix is added always as the last part
                                of the filename (even after file's extension).
                                It does not affect '--output' parameter and can
                                be used along with it ('--output' parameter
                                defines the base name - i.e. prefix).

  -force_stos_opt               Will forcibly enable stateless to stateful optimization,
                                i.e. skip "-cl-intel-greater-than-4GB-buffer-required".

  -q                            Will silence most of output messages.

  -cpp_file                     Will generate c++ file with C-array
                                containing Intel OpenCL device binary.

  -output_no_suffix             Prevents ocloc from adding family name suffix.

  --help                        Print this usage message.

Examples :
  Compile file to Intel OpenCL GPU device binary (out = source_file_Gen9core.bin)
    ocloc -file source_file.cl -device skl
)===",
           NEO::getDevicesTypes().c_str());
}

void OfflineCompiler::storeBinary(
    char *&pDst,
    size_t &dstSize,
    const void *pSrc,
    const size_t srcSize) {
    dstSize = 0;

    DEBUG_BREAK_IF(!(pSrc && srcSize > 0));

    delete[] pDst;
    pDst = new char[srcSize];

    dstSize = (cl_uint)srcSize;
    memcpy_s(pDst, dstSize, pSrc, srcSize);
}

bool OfflineCompiler::generateElfBinary() {
    if (!genBinary || !genBinarySize) {
        return false;
    }

    SingleDeviceBinary binary = {};
    binary.buildOptions = this->options;
    binary.intermediateRepresentation = ArrayRef<const uint8_t>(reinterpret_cast<const uint8_t *>(this->irBinary), this->irBinarySize);
    binary.deviceBinary = ArrayRef<const uint8_t>(reinterpret_cast<const uint8_t *>(this->genBinary), this->genBinarySize);
    binary.debugData = ArrayRef<const uint8_t>(reinterpret_cast<const uint8_t *>(this->debugDataBinary), this->debugDataBinarySize);
    std::string packErrors;
    std::string packWarnings;

    using namespace NEO::Elf;
    ElfEncoder<EI_CLASS_64> ElfEncoder;
    ElfEncoder.getElfFileHeader().type = ET_OPENCL_EXECUTABLE;
    if (binary.buildOptions.empty() == false) {
        ElfEncoder.appendSection(SHT_OPENCL_OPTIONS, SectionNamesOpenCl::buildOptions,
                                 ArrayRef<const uint8_t>(reinterpret_cast<const uint8_t *>(binary.buildOptions.data()), binary.buildOptions.size()));
    }

    if (binary.intermediateRepresentation.empty() == false) {
        if (isSpirV) {
            ElfEncoder.appendSection(SHT_OPENCL_SPIRV, SectionNamesOpenCl::spirvObject, binary.intermediateRepresentation);
        } else {
            ElfEncoder.appendSection(SHT_OPENCL_LLVM_BINARY, SectionNamesOpenCl::llvmObject, binary.intermediateRepresentation);
        }
    }

    if (binary.debugData.empty() == false) {
        ElfEncoder.appendSection(SHT_OPENCL_DEV_DEBUG, SectionNamesOpenCl::deviceDebug, binary.debugData);
    }

    if (binary.deviceBinary.empty() == false) {
        ElfEncoder.appendSection(SHT_OPENCL_DEV_BINARY, SectionNamesOpenCl::deviceBinary, binary.deviceBinary);
    }

    this->elfBinary = ElfEncoder.encode();

    return true;
}

void OfflineCompiler::writeOutAllFiles() {
    std::string fileBase;
    std::string fileTrunk = getFileNameTrunk(inputFile);
    if (outputNoSuffix) {
        if (outputFile.empty()) {
            fileBase = fileTrunk;
        } else {
            fileBase = outputFile;
        }
    } else {
        if (outputFile.empty()) {
            fileBase = fileTrunk + "_" + familyNameWithType;
        } else {
            fileBase = outputFile + "_" + familyNameWithType;
        }
    }

    if (outputDirectory != "") {
        std::list<std::string> dirList;
        std::string tmp = outputDirectory;
        size_t pos = outputDirectory.size() + 1;

        do {
            dirList.push_back(tmp);
            pos = tmp.find_last_of("/\\", pos);
            tmp = tmp.substr(0, pos);
        } while (pos != std::string::npos);

        while (!dirList.empty()) {
            MakeDirectory(dirList.back().c_str());
            dirList.pop_back();
        }
    }

    if (irBinary) {
        std::string irOutputFileName = generateFilePathForIr(fileBase) + generateOptsSuffix();

        writeDataToFile(
            irOutputFileName.c_str(),
            irBinary,
            irBinarySize);
    }

    if (genBinary) {
        std::string genOutputFile = generateFilePath(outputDirectory, fileBase, ".gen") + generateOptsSuffix();

        writeDataToFile(
            genOutputFile.c_str(),
            genBinary,
            genBinarySize);

        if (useCppFile) {
            std::string cppOutputFile = generateFilePath(outputDirectory, fileBase, ".cpp");
            std::string cpp = parseBinAsCharArray((uint8_t *)genBinary, genBinarySize, fileTrunk);
            writeDataToFile(cppOutputFile.c_str(), cpp.c_str(), cpp.size());
        }
    }

    if (!elfBinary.empty()) {
        std::string elfOutputFile;
        if (outputNoSuffix) {
            elfOutputFile = generateFilePath(outputDirectory, fileBase, "");
        } else {
            elfOutputFile = generateFilePath(outputDirectory, fileBase, ".bin") + generateOptsSuffix();
        }
        writeDataToFile(
            elfOutputFile.c_str(),
            elfBinary.data(),
            elfBinary.size());
    }

    if (debugDataBinary) {
        std::string debugOutputFile = generateFilePath(outputDirectory, fileBase, ".dbg") + generateOptsSuffix();

        writeDataToFile(
            debugOutputFile.c_str(),
            debugDataBinary,
            debugDataBinarySize);
    }
}

bool OfflineCompiler::readOptionsFromFile(std::string &options, const std::string &file) {
    if (!fileExists(file)) {
        return false;
    }
    size_t optionsSize = 0U;
    auto optionsFromFile = loadDataFromFile(file.c_str(), optionsSize);
    if (optionsSize > 0) {
        // Remove comment containing copyright header
        options = optionsFromFile.get();
        size_t commentBegin = options.find_first_of("/*");
        size_t commentEnd = options.find_last_of("*/");
        if (commentBegin != std::string::npos && commentEnd != std::string::npos) {
            options = options.replace(commentBegin, commentEnd - commentBegin + 1, "");
            size_t optionsBegin = options.find_first_not_of(" \t\n\r");
            if (optionsBegin != std::string::npos) {
                options = options.substr(optionsBegin, options.length());
            }
        }
        auto trimPos = options.find_last_not_of(" \n\r");
        options = options.substr(0, trimPos + 1);
    }
    return true;
}

std::string generateFilePath(const std::string &directory, const std::string &fileNameBase, const char *extension) {
    UNRECOVERABLE_IF(extension == nullptr);

    if (directory.empty()) {
        return fileNameBase + extension;
    }

    bool hasTrailingSlash = (*directory.rbegin() == '/');
    std::string ret;
    ret.reserve(directory.size() + (hasTrailingSlash ? 0 : 1) + fileNameBase.size() + strlen(extension) + 1);
    ret.append(directory);
    if (false == hasTrailingSlash) {
        ret.append("/", 1);
    }
    ret.append(fileNameBase);
    ret.append(extension);

    return ret;
}

} // namespace NEO
