//
// Copyright (c) 2009 Advanced Micro Devices, Inc. All rights reserved.
//

#include "rockernel.hpp"
#include "amd_hsa_kernel_code.h"

#include <algorithm>

#ifndef WITHOUT_HSA_BACKEND

namespace roc {

#if defined(WITH_LIGHTNING_COMPILER)

using llvm::AMDGPU::CodeObject::AccessQualifier;
using llvm::AMDGPU::CodeObject::AddressSpaceQualifier;
using llvm::AMDGPU::CodeObject::ValueKind;
using llvm::AMDGPU::CodeObject::ValueType;

static inline ROC_ARG_TYPE GetKernelArgType(const KernelArgMD& lcArg) {
  switch (lcArg.mValueKind) {
    case ValueKind::GlobalBuffer:
    case ValueKind::DynamicSharedPointer:
      return ROC_ARGTYPE_POINTER;
    case ValueKind::ByValue:
      return ROC_ARGTYPE_VALUE;
    case ValueKind::Image:
      return ROC_ARGTYPE_IMAGE;
    case ValueKind::Sampler:
      return ROC_ARGTYPE_SAMPLER;
    case ValueKind::HiddenGlobalOffsetX:
      return ROC_ARGTYPE_HIDDEN_GLOBAL_OFFSET_X;
    case ValueKind::HiddenGlobalOffsetY:
      return ROC_ARGTYPE_HIDDEN_GLOBAL_OFFSET_Y;
    case ValueKind::HiddenGlobalOffsetZ:
      return ROC_ARGTYPE_HIDDEN_GLOBAL_OFFSET_Z;
    case ValueKind::HiddenPrintfBuffer:
      return ROC_ARGTYPE_HIDDEN_PRINTF_BUFFER;
    case ValueKind::HiddenDefaultQueue:
      return ROC_ARGTYPE_HIDDEN_DEFAULT_QUEUE;
    case ValueKind::HiddenCompletionAction:
      return ROC_ARGTYPE_HIDDEN_COMPLETION_ACTION;
    case ValueKind::HiddenNone:
      return ROC_ARGTYPE_HIDDEN_NONE;
    default:
      return ROC_ARGTYPE_ERROR;
  }
}
#endif  // defined(WITH_LIGHTNING_COMPILER)

static inline ROC_ARG_TYPE GetKernelArgType(const aclArgData* argInfo) {
  if (argInfo->argStr[0] == '_' && argInfo->argStr[1] == '.') {
    if (strcmp(&argInfo->argStr[2], "global_offset_0") == 0) {
      return ROC_ARGTYPE_HIDDEN_GLOBAL_OFFSET_X;
    } else if (strcmp(&argInfo->argStr[2], "global_offset_1") == 0) {
      return ROC_ARGTYPE_HIDDEN_GLOBAL_OFFSET_Y;
    } else if (strcmp(&argInfo->argStr[2], "global_offset_2") == 0) {
      return ROC_ARGTYPE_HIDDEN_GLOBAL_OFFSET_Z;
    } else if (strcmp(&argInfo->argStr[2], "printf_buffer") == 0) {
      return ROC_ARGTYPE_HIDDEN_PRINTF_BUFFER;
    } else if (strcmp(&argInfo->argStr[2], "vqueue_pointer") == 0) {
      return ROC_ARGTYPE_HIDDEN_DEFAULT_QUEUE;
    } else if (strcmp(&argInfo->argStr[2], "aqlwrap_pointer") == 0) {
      return ROC_ARGTYPE_HIDDEN_COMPLETION_ACTION;
    }
    return ROC_ARGTYPE_HIDDEN_NONE;
  }

  switch (argInfo->type) {
    case ARG_TYPE_POINTER:
      return ROC_ARGTYPE_POINTER;
    case ARG_TYPE_VALUE:
      return (argInfo->arg.value.data == DATATYPE_struct) ? ROC_ARGTYPE_REFERENCE
                                                          : ROC_ARGTYPE_VALUE;
    case ARG_TYPE_IMAGE:
      return ROC_ARGTYPE_IMAGE;
    case ARG_TYPE_SAMPLER:
      return ROC_ARGTYPE_SAMPLER;
    case ARG_TYPE_ERROR:
    default:
      return ROC_ARGTYPE_ERROR;
  }
}

#if defined(WITH_LIGHTNING_COMPILER)
static inline size_t GetKernelArgAlignment(const KernelArgMD& lcArg) { return lcArg.mAlign; }
#endif  // defined(WITH_LIGHTNING_COMPILER)

static inline size_t GetKernelArgAlignment(const aclArgData* argInfo) {
  switch (argInfo->type) {
    case ARG_TYPE_POINTER:
      return sizeof(void*);
    case ARG_TYPE_VALUE:
      switch (argInfo->arg.value.data) {
        case DATATYPE_i8:
        case DATATYPE_u8:
          return 1;
        case DATATYPE_u16:
        case DATATYPE_i16:
        case DATATYPE_f16:
          return 2;
        case DATATYPE_u32:
        case DATATYPE_i32:
        case DATATYPE_f32:
          return 4;
        case DATATYPE_i64:
        case DATATYPE_u64:
        case DATATYPE_f64:
          return 8;
        case DATATYPE_struct:
          return 128;
        case DATATYPE_ERROR:
        default:
          return -1;
      }
    case ARG_TYPE_IMAGE:
      return sizeof(cl_mem);
    case ARG_TYPE_SAMPLER:
      return sizeof(cl_sampler);
    default:
      return -1;
  }
}

#if defined(WITH_LIGHTNING_COMPILER)
static inline size_t GetKernelArgPointeeAlignment(const KernelArgMD& lcArg) {
  if (lcArg.mValueKind == ValueKind::DynamicSharedPointer) {
    uint32_t align = lcArg.mPointeeAlign;
    if (align == 0) {
      LogWarning("Missing DynamicSharedPointer alignment");
      align = 128; /* worst case alignment */
      ;
    }
    return align;
  }
  return 1;
}
#endif  // defined(WITH_LIGHTNING_COMPILER)

static inline size_t GetKernelArgPointeeAlignment(const aclArgData* argInfo) {
  if (argInfo->type == ARG_TYPE_POINTER) {
    return argInfo->arg.pointer.align;
  }
  return 1;
}

#if defined(WITH_LIGHTNING_COMPILER)
static inline ROC_ACCESS_TYPE GetKernelArgAccessType(const KernelArgMD& lcArg) {
  if (lcArg.mValueKind == ValueKind::GlobalBuffer || lcArg.mValueKind == ValueKind::Image) {
    switch (lcArg.mAccQual) {
      case AccessQualifier::ReadOnly:
        return ROC_ACCESS_TYPE_RO;
      case AccessQualifier::WriteOnly:
        return ROC_ACCESS_TYPE_WO;
      case AccessQualifier::ReadWrite:
      default:
        return ROC_ACCESS_TYPE_RW;
    }
  }
  return ROC_ACCESS_TYPE_NONE;
}
#endif  // defined(WITH_LIGHTNING_COMPILER)

static inline ROC_ACCESS_TYPE GetKernelArgAccessType(const aclArgData* argInfo) {
  aclAccessType accessType;

  if (argInfo->type == ARG_TYPE_POINTER) {
    accessType = argInfo->arg.pointer.type;
  } else if (argInfo->type == ARG_TYPE_IMAGE) {
    accessType = argInfo->arg.image.type;
  } else {
    return ROC_ACCESS_TYPE_NONE;
  }
  if (accessType == ACCESS_TYPE_RO) {
    return ROC_ACCESS_TYPE_RO;
  } else if (accessType == ACCESS_TYPE_WO) {
    return ROC_ACCESS_TYPE_WO;
  }

  return ROC_ACCESS_TYPE_RW;
}

#if defined(WITH_LIGHTNING_COMPILER)
static inline ROC_ADDRESS_QUALIFIER GetKernelAddrQual(const KernelArgMD& lcArg) {
  if (lcArg.mValueKind == ValueKind::DynamicSharedPointer) {
    return ROC_ADDRESS_LOCAL;
  } else if (lcArg.mValueKind == ValueKind::GlobalBuffer) {
    if (lcArg.mAddrSpaceQual == AddressSpaceQualifier::Global) {
      return ROC_ADDRESS_GLOBAL;
    } else if (lcArg.mAddrSpaceQual == AddressSpaceQualifier::Constant) {
      return ROC_ADDRESS_CONSTANT;
    }
    LogError("Unsupported address type");
    return ROC_ADDRESS_ERROR;
  } else if (lcArg.mValueKind == ValueKind::Image || lcArg.mValueKind == ValueKind::Sampler) {
    return ROC_ADDRESS_GLOBAL;
  }
  return ROC_ADDRESS_ERROR;
}
#endif  // defined(WITH_LIGHTNING_COMPILER)

static inline ROC_ADDRESS_QUALIFIER GetKernelAddrQual(const aclArgData* argInfo) {
  if (argInfo->type == ARG_TYPE_POINTER) {
    switch (argInfo->arg.pointer.memory) {
      case PTR_MT_CONSTANT_EMU:
      case PTR_MT_UAV_CONSTANT:
      case PTR_MT_CONSTANT:
        return ROC_ADDRESS_CONSTANT;
      case PTR_MT_UAV:
      case PTR_MT_GLOBAL:
        return ROC_ADDRESS_GLOBAL;
      case PTR_MT_LDS_EMU:
      case PTR_MT_LDS:
        return ROC_ADDRESS_LOCAL;
      case PTR_MT_ERROR:
      default:
        LogError("Unsupported address type");
        return ROC_ADDRESS_ERROR;
    }
  } else if ((argInfo->type == ARG_TYPE_IMAGE) || (argInfo->type == ARG_TYPE_SAMPLER)) {
    return ROC_ADDRESS_GLOBAL;
  }
  return ROC_ADDRESS_ERROR;
}

#if defined(WITH_LIGHTNING_COMPILER)
static inline ROC_DATA_TYPE GetKernelDataType(const KernelArgMD& lcArg) {
  aclArgDataType dataType;

  if (lcArg.mValueKind != ValueKind::ByValue) {
    return ROC_DATATYPE_ERROR;
  }

  switch (lcArg.mValueType) {
    case ValueType::I8:
      return ROC_DATATYPE_S8;
    case ValueType::I16:
      return ROC_DATATYPE_S16;
    case ValueType::I32:
      return ROC_DATATYPE_S32;
    case ValueType::I64:
      return ROC_DATATYPE_S64;
    case ValueType::U8:
      return ROC_DATATYPE_U8;
    case ValueType::U16:
      return ROC_DATATYPE_U16;
    case ValueType::U32:
      return ROC_DATATYPE_U32;
    case ValueType::U64:
      return ROC_DATATYPE_U64;
    case ValueType::F16:
      return ROC_DATATYPE_F16;
    case ValueType::F32:
      return ROC_DATATYPE_F32;
    case ValueType::F64:
      return ROC_DATATYPE_F64;
    case ValueType::Struct:
      return ROC_DATATYPE_STRUCT;
    default:
      return ROC_DATATYPE_ERROR;
  }
}
#endif  // defined(WITH_LIGHTNING_COMPILER)

/* f16 returns f32 - workaround due to comp lib */
static inline ROC_DATA_TYPE GetKernelDataType(const aclArgData* argInfo) {
  aclArgDataType dataType;

  if (argInfo->type == ARG_TYPE_POINTER) {
    dataType = argInfo->arg.pointer.data;
  } else if (argInfo->type == ARG_TYPE_VALUE) {
    dataType = argInfo->arg.value.data;
  } else {
    return ROC_DATATYPE_ERROR;
  }
  switch (dataType) {
    case DATATYPE_i1:
      return ROC_DATATYPE_B1;
    case DATATYPE_i8:
      return ROC_DATATYPE_S8;
    case DATATYPE_i16:
      return ROC_DATATYPE_S16;
    case DATATYPE_i32:
      return ROC_DATATYPE_S32;
    case DATATYPE_i64:
      return ROC_DATATYPE_S64;
    case DATATYPE_u8:
      return ROC_DATATYPE_U8;
    case DATATYPE_u16:
      return ROC_DATATYPE_U16;
    case DATATYPE_u32:
      return ROC_DATATYPE_U32;
    case DATATYPE_u64:
      return ROC_DATATYPE_U64;
    case DATATYPE_f16:
      return ROC_DATATYPE_F32;
    case DATATYPE_f32:
      return ROC_DATATYPE_F32;
    case DATATYPE_f64:
      return ROC_DATATYPE_F64;
    case DATATYPE_struct:
      return ROC_DATATYPE_STRUCT;
    case DATATYPE_opaque:
      return ROC_DATATYPE_OPAQUE;
    case DATATYPE_ERROR:
    default:
      return ROC_DATATYPE_ERROR;
  }
}

static inline int GetKernelArgSize(const aclArgData* argInfo) {
  switch (argInfo->type) {
    case ARG_TYPE_POINTER:
      return sizeof(void*);
    case ARG_TYPE_VALUE:
      switch (argInfo->arg.value.data) {
        case DATATYPE_i8:
        case DATATYPE_u8:
        case DATATYPE_struct:
          return 1 * argInfo->arg.value.numElements;
        case DATATYPE_u16:
        case DATATYPE_i16:
        case DATATYPE_f16:
          return 2 * argInfo->arg.value.numElements;
        case DATATYPE_u32:
        case DATATYPE_i32:
        case DATATYPE_f32:
          return 4 * argInfo->arg.value.numElements;
        case DATATYPE_i64:
        case DATATYPE_u64:
        case DATATYPE_f64:
          return 8 * argInfo->arg.value.numElements;
        case DATATYPE_ERROR:
        default:
          return -1;
      }
    case ARG_TYPE_IMAGE:
      return sizeof(cl_mem);
    case ARG_TYPE_SAMPLER:
      return sizeof(cl_sampler);
    default:
      return -1;
  }
}

static inline clk_value_type_t GetOclType(const Kernel::Argument* arg) {
  static const clk_value_type_t ClkValueMapType[6][6] = {
      {T_CHAR, T_CHAR2, T_CHAR3, T_CHAR4, T_CHAR8, T_CHAR16},
      {T_SHORT, T_SHORT2, T_SHORT3, T_SHORT4, T_SHORT8, T_SHORT16},
      {T_INT, T_INT2, T_INT3, T_INT4, T_INT8, T_INT16},
      {T_LONG, T_LONG2, T_LONG3, T_LONG4, T_LONG8, T_LONG16},
      {T_FLOAT, T_FLOAT2, T_FLOAT3, T_FLOAT4, T_FLOAT8, T_FLOAT16},
      {T_DOUBLE, T_DOUBLE2, T_DOUBLE3, T_DOUBLE4, T_DOUBLE8, T_DOUBLE16},
  };

  uint sizeType;
  uint numElements;
  if (arg->type_ == ROC_ARGTYPE_POINTER || arg->type_ == ROC_ARGTYPE_IMAGE) {
    return T_POINTER;
  } else if (arg->type_ == ROC_ARGTYPE_VALUE || arg->type_ == ROC_ARGTYPE_REFERENCE) {
    switch (arg->dataType_) {
      case ROC_DATATYPE_S8:
      case ROC_DATATYPE_U8:
        sizeType = 0;
        numElements = arg->size_;
        break;
      case ROC_DATATYPE_S16:
      case ROC_DATATYPE_U16:
        sizeType = 1;
        numElements = arg->size_ / 2;
        break;
      case ROC_DATATYPE_S32:
      case ROC_DATATYPE_U32:
        sizeType = 2;
        numElements = arg->size_ / 4;
        break;
      case ROC_DATATYPE_S64:
      case ROC_DATATYPE_U64:
        sizeType = 3;
        numElements = arg->size_ / 8;
        break;
      case ROC_DATATYPE_F16:
        sizeType = 4;
        numElements = arg->size_ / 2;
        break;
      case ROC_DATATYPE_F32:
        sizeType = 4;
        numElements = arg->size_ / 4;
        break;
      case ROC_DATATYPE_F64:
        sizeType = 5;
        numElements = arg->size_ / 8;
        break;
      default:
        return T_VOID;
    }

    switch (numElements) {
      case 1:
        return ClkValueMapType[sizeType][0];
      case 2:
        return ClkValueMapType[sizeType][1];
      case 3:
        return ClkValueMapType[sizeType][2];
      case 4:
        return ClkValueMapType[sizeType][3];
      case 8:
        return ClkValueMapType[sizeType][4];
      case 16:
        return ClkValueMapType[sizeType][5];
      default:
        return T_VOID;
    }
  } else if (arg->type_ == ROC_ARGTYPE_SAMPLER) {
    return T_SAMPLER;
  } else {
    return T_VOID;
  }
}

static inline cl_kernel_arg_address_qualifier GetOclAddrQual(const Kernel::Argument* arg) {
  if (arg->type_ == ROC_ARGTYPE_POINTER) {
    switch (arg->addrQual_) {
      case ROC_ADDRESS_GLOBAL:
        return CL_KERNEL_ARG_ADDRESS_GLOBAL;
      case ROC_ADDRESS_CONSTANT:
        return CL_KERNEL_ARG_ADDRESS_CONSTANT;
      case ROC_ADDRESS_LOCAL:
        return CL_KERNEL_ARG_ADDRESS_LOCAL;
      default:
        return CL_KERNEL_ARG_ADDRESS_PRIVATE;
    }
  } else if (arg->type_ == ROC_ARGTYPE_IMAGE) {
    return CL_KERNEL_ARG_ADDRESS_GLOBAL;
  }
  // default for all other cases
  return CL_KERNEL_ARG_ADDRESS_PRIVATE;
}

static inline cl_kernel_arg_access_qualifier GetOclAccessQual(const Kernel::Argument* arg) {
  if (arg->type_ == ROC_ARGTYPE_IMAGE) {
    switch (arg->access_) {
      case ROC_ACCESS_TYPE_RO:
        return CL_KERNEL_ARG_ACCESS_READ_ONLY;
      case ROC_ACCESS_TYPE_WO:
        return CL_KERNEL_ARG_ACCESS_WRITE_ONLY;
      case ROC_ACCESS_TYPE_RW:
        return CL_KERNEL_ARG_ACCESS_READ_WRITE;
      default:
        return CL_KERNEL_ARG_ACCESS_NONE;
    }
  }
  return CL_KERNEL_ARG_ACCESS_NONE;
}

#if defined(WITH_LIGHTNING_COMPILER)
static inline cl_kernel_arg_type_qualifier GetOclTypeQual(const KernelArgMD& lcArg) {
  cl_kernel_arg_type_qualifier rv = CL_KERNEL_ARG_TYPE_NONE;
  if (lcArg.mValueKind == ValueKind::GlobalBuffer ||
      lcArg.mValueKind == ValueKind::DynamicSharedPointer) {
    if (lcArg.mIsVolatile) {
      rv |= CL_KERNEL_ARG_TYPE_VOLATILE;
    }
    if (lcArg.mIsRestrict) {
      rv |= CL_KERNEL_ARG_TYPE_RESTRICT;
    }
    if (lcArg.mIsConst) {
      rv |= CL_KERNEL_ARG_TYPE_CONST;
    }
  }
  return rv;
}
#endif  // defined(WITH_LIGHTNING_COMPILER)

static inline cl_kernel_arg_type_qualifier GetOclTypeQual(const aclArgData* argInfo) {
  cl_kernel_arg_type_qualifier rv = CL_KERNEL_ARG_TYPE_NONE;
  if (argInfo->type == ARG_TYPE_POINTER) {
    if (argInfo->arg.pointer.isVolatile) {
      rv |= CL_KERNEL_ARG_TYPE_VOLATILE;
    }
    if (argInfo->arg.pointer.isRestrict) {
      rv |= CL_KERNEL_ARG_TYPE_RESTRICT;
    }
    if (argInfo->isConst) {
      rv |= CL_KERNEL_ARG_TYPE_CONST;
    }
    switch (argInfo->arg.pointer.memory) {
      case PTR_MT_CONSTANT:
      case PTR_MT_UAV_CONSTANT:
      case PTR_MT_CONSTANT_EMU:
        rv |= CL_KERNEL_ARG_TYPE_CONST;
        break;
      default:
        break;
    }
  }
  return rv;
}

void Kernel::initArguments(const aclArgData* aclArg) {
  device::Kernel::parameters_t params;

  // Iterate through the arguments and insert into parameterList
  for (size_t offset = 0; aclArg->struct_size != 0; aclArg++) {
    // Initialize HSAIL kernel argument
    Kernel::Argument* arg = new Kernel::Argument;
    arg->name_ = aclArg->argStr;
    arg->typeName_ = aclArg->typeStr;
    arg->size_ = GetKernelArgSize(aclArg);
    arg->type_ = GetKernelArgType(aclArg);
    arg->addrQual_ = GetKernelAddrQual(aclArg);
    arg->dataType_ = GetKernelDataType(aclArg);
    arg->alignment_ = GetKernelArgAlignment(aclArg);
    arg->access_ = GetKernelArgAccessType(aclArg);
    arg->pointeeAlignment_ = GetKernelArgPointeeAlignment(aclArg);

    bool isHidden = arg->type_ == ROC_ARGTYPE_HIDDEN_GLOBAL_OFFSET_X ||
        arg->type_ == ROC_ARGTYPE_HIDDEN_GLOBAL_OFFSET_Y ||
        arg->type_ == ROC_ARGTYPE_HIDDEN_GLOBAL_OFFSET_Z ||
        arg->type_ == ROC_ARGTYPE_HIDDEN_PRINTF_BUFFER ||
        arg->type_ == ROC_ARGTYPE_HIDDEN_DEFAULT_QUEUE ||
        arg->type_ == ROC_ARGTYPE_HIDDEN_COMPLETION_ACTION || arg->type_ == ROC_ARGTYPE_HIDDEN_NONE;

    arg->index_ = isHidden ? uint(-1) : params.size();
    hsailArgList_.push_back(arg);

    if (isHidden) {
      continue;
    }

    amd::KernelParameterDescriptor desc;
    desc.name_ = arg->name_.c_str();
    desc.type_ = GetOclType(arg);
    desc.addressQualifier_ = GetOclAddrQual(arg);
    desc.accessQualifier_ = GetOclAccessQual(arg);
    desc.typeQualifier_ = GetOclTypeQual(aclArg);
    desc.typeName_ = arg->typeName_.c_str();

    // Make a check if it is local or global
    if (desc.addressQualifier_ == CL_KERNEL_ARG_ADDRESS_LOCAL) {
      desc.size_ = 0;
    } else {
      desc.size_ = arg->size_;
    }

    // Make offset alignment to match CPU metadata, since
    // in multidevice config abstraction layer has a single signature
    // and CPU sends the parameters as they are allocated in memory
    size_t size = desc.size_;
    if (size == 0) {
      // Local memory for CPU
      size = sizeof(cl_mem);
    }
    offset = amd::alignUp(offset, std::min(size, size_t(16)));
    desc.offset_ = offset;
    offset += amd::alignUp(size, sizeof(uint32_t));

    params.push_back(desc);
  }
  createSignature(params);
}

#if defined(WITH_LIGHTNING_COMPILER)
void Kernel::initArguments_LC(const KernelMD& kernelMD) {
  device::Kernel::parameters_t params;

  size_t offset = 0;

  for (size_t i = 0; i < kernelMD.mArgs.size(); ++i) {
    const KernelArgMD& lcArg = kernelMD.mArgs[i];

    // Initialize HSAIL kernel argument
    Kernel::Argument* arg = new Kernel::Argument;
    arg->name_ = lcArg.mName;
    arg->typeName_ = lcArg.mTypeName;
    arg->size_ = lcArg.mSize;
    arg->type_ = GetKernelArgType(lcArg);
    arg->addrQual_ = GetKernelAddrQual(lcArg);
    arg->dataType_ = GetKernelDataType(lcArg);
    arg->alignment_ = GetKernelArgAlignment(lcArg);
    arg->access_ = GetKernelArgAccessType(lcArg);
    arg->pointeeAlignment_ = GetKernelArgPointeeAlignment(lcArg);

    bool isHidden = arg->type_ == ROC_ARGTYPE_HIDDEN_GLOBAL_OFFSET_X ||
        arg->type_ == ROC_ARGTYPE_HIDDEN_GLOBAL_OFFSET_Y ||
        arg->type_ == ROC_ARGTYPE_HIDDEN_GLOBAL_OFFSET_Z ||
        arg->type_ == ROC_ARGTYPE_HIDDEN_PRINTF_BUFFER ||
        arg->type_ == ROC_ARGTYPE_HIDDEN_DEFAULT_QUEUE ||
        arg->type_ == ROC_ARGTYPE_HIDDEN_COMPLETION_ACTION || arg->type_ == ROC_ARGTYPE_HIDDEN_NONE;

    arg->index_ = isHidden ? uint(-1) : params.size();
    hsailArgList_.push_back(arg);

    if (isHidden) {
      continue;
    }

    // Initialize Device kernel parameters
    amd::KernelParameterDescriptor desc;

    desc.name_ = lcArg.mName.c_str();
    desc.type_ = GetOclType(arg);
    desc.addressQualifier_ = GetOclAddrQual(arg);
    desc.accessQualifier_ = GetOclAccessQual(arg);
    desc.typeQualifier_ = GetOclTypeQual(lcArg);
    desc.typeName_ = lcArg.mTypeName.c_str();

    // Make a check if it is local or global
    if (desc.addressQualifier_ == CL_KERNEL_ARG_ADDRESS_LOCAL) {
      desc.size_ = 0;
    } else {
      desc.size_ = arg->size_;
    }

    // Make offset alignment to match CPU metadata, since
    // in multidevice config abstraction layer has a single signature
    // and CPU sends the parameters as they are allocated in memory
    size_t size = desc.size_;
    if (size == 0) {
      // Local memory for CPU
      size = sizeof(cl_mem);
    }
    offset = (size_t)amd::alignUp(offset, std::min(size, size_t(16)));
    desc.offset_ = offset;
    offset += amd::alignUp(size, sizeof(uint32_t));

    params.push_back(desc);
  }

  createSignature(params);
}
#endif  // defined(WITH_LIGHTNING_COMPILER)

Kernel::Kernel(std::string name, HSAILProgram* prog, const uint64_t& kernelCodeHandle,
               const uint32_t workgroupGroupSegmentByteSize,
               const uint32_t workitemPrivateSegmentByteSize, const uint32_t kernargSegmentByteSize,
               const uint32_t kernargSegmentAlignment)
    : device::Kernel(name),
      program_(prog),
      kernelCodeHandle_(kernelCodeHandle),
      workgroupGroupSegmentByteSize_(workgroupGroupSegmentByteSize),
      workitemPrivateSegmentByteSize_(workitemPrivateSegmentByteSize),
      kernargSegmentByteSize_(kernargSegmentByteSize),
      kernargSegmentAlignment_(kernargSegmentAlignment) {}

#if defined(WITH_LIGHTNING_COMPILER)

static const KernelMD* FindKernelMetadata(const CodeObjectMD* programMD, const std::string& name) {
  for (const KernelMD& kernelMD : programMD->mKernels) {
    if (kernelMD.mName == name) {
      return &kernelMD;
    }
  }
  return nullptr;
}

bool Kernel::init_LC() {
  hsa_agent_t hsaDevice = program_->hsaDevice();

  // Pull out metadata from the ELF
  const CodeObjectMD* programMD = program_->metadata();
  assert(programMD != nullptr);

  const KernelMD* kernelMD = FindKernelMetadata(programMD, name());
  if (kernelMD == nullptr) {
    return false;
  }
  initArguments_LC(*kernelMD);

  // Set the workgroup information for the kernel
  memset(&workGroupInfo_, 0, sizeof(workGroupInfo_));
  workGroupInfo_.availableLDSSize_ = program_->dev().info().localMemSizePerCU_;
  assert(workGroupInfo_.availableLDSSize_ > 0);
  workGroupInfo_.availableSGPRs_ = 0;
  workGroupInfo_.availableVGPRs_ = 0;

  if (!kernelMD->mAttrs.mReqdWorkGroupSize.empty()) {
    const auto& requiredWorkgroupSize = kernelMD->mAttrs.mReqdWorkGroupSize;
    workGroupInfo_.compileSize_[0] = requiredWorkgroupSize[0];
    workGroupInfo_.compileSize_[1] = requiredWorkgroupSize[1];
    workGroupInfo_.compileSize_[2] = requiredWorkgroupSize[2];
  }

  if (!kernelMD->mAttrs.mWorkGroupSizeHint.empty()) {
    const auto& workgroupSizeHint = kernelMD->mAttrs.mWorkGroupSizeHint;
    workGroupInfo_.compileSizeHint_[0] = workgroupSizeHint[0];
    workGroupInfo_.compileSizeHint_[1] = workgroupSizeHint[1];
    workGroupInfo_.compileSizeHint_[2] = workgroupSizeHint[2];
  }

  if (!kernelMD->mAttrs.mVecTypeHint.empty()) {
    workGroupInfo_.compileVecTypeHint_ = kernelMD->mAttrs.mVecTypeHint.c_str();
  }

  uint32_t wavefront_size = 0;
  if (hsa_agent_get_info(program_->hsaDevice(), HSA_AGENT_INFO_WAVEFRONT_SIZE, &wavefront_size) !=
      HSA_STATUS_SUCCESS) {
    return false;
  }
  assert(wavefront_size > 0);

  workGroupInfo_.privateMemSize_ = workitemPrivateSegmentByteSize_;
  workGroupInfo_.localMemSize_ = workgroupGroupSegmentByteSize_;
  workGroupInfo_.usedLDSSize_ = workgroupGroupSegmentByteSize_;

  workGroupInfo_.preferredSizeMultiple_ = wavefront_size;

  /// TODO: Are there any other fields that are getting queried from akc?
  /// If so, code properties metadata should be used instead.
  workGroupInfo_.usedSGPRs_ = kernelMD->mCodeProps.mWavefrontNumSGPRs;
  workGroupInfo_.usedVGPRs_ = kernelMD->mCodeProps.mWorkitemNumVGPRs;

  workGroupInfo_.usedStackSize_ = 0;

  workGroupInfo_.wavefrontPerSIMD_ = program_->dev().info().maxWorkItemSizes_[0] / wavefront_size;

  workGroupInfo_.wavefrontSize_ = wavefront_size;

  if (workGroupInfo_.compileSize_[0] != 0) {
    workGroupInfo_.size_ = workGroupInfo_.compileSize_[0] * workGroupInfo_.compileSize_[1] *
        workGroupInfo_.compileSize_[2];
  } else {
    workGroupInfo_.size_ = program_->dev().info().maxWorkGroupSize_;
  }

  initPrintf_LC(programMD->mPrintf);

  return true;
}
#endif  // defined(WITH_LIGHTNING_COMPILER)

bool Kernel::init() {
#if defined(WITH_LIGHTNING_COMPILER)
  return init_LC();
#else   // !defined(WITH_LIGHTNING_COMPILER)
  acl_error errorCode;
  // compile kernel down to ISA
  hsa_agent_t hsaDevice = program_->hsaDevice();
  // Pull out metadata from the ELF
  size_t sizeOfArgList;
  aclCompiler* compileHandle = program_->dev().compiler();
  std::string openClKernelName("&__OpenCL_" + name() + "_kernel");
  errorCode = g_complibApi._aclQueryInfo(compileHandle, program_->binaryElf(), RT_ARGUMENT_ARRAY,
                                         openClKernelName.c_str(), nullptr, &sizeOfArgList);
  if (errorCode != ACL_SUCCESS) {
    return false;
  }
  std::unique_ptr<char[]> argList(new char[sizeOfArgList]);
  errorCode = g_complibApi._aclQueryInfo(compileHandle, program_->binaryElf(), RT_ARGUMENT_ARRAY,
                                         openClKernelName.c_str(), argList.get(), &sizeOfArgList);
  if (errorCode != ACL_SUCCESS) {
    return false;
  }

  // Set the argList
  initArguments((const aclArgData*)argList.get());

  // Set the workgroup information for the kernel
  memset(&workGroupInfo_, 0, sizeof(workGroupInfo_));
  workGroupInfo_.availableLDSSize_ = program_->dev().info().localMemSizePerCU_;
  assert(workGroupInfo_.availableLDSSize_ > 0);
  workGroupInfo_.availableSGPRs_ = 0;
  workGroupInfo_.availableVGPRs_ = 0;
  size_t sizeOfWorkGroupSize;
  errorCode = g_complibApi._aclQueryInfo(compileHandle, program_->binaryElf(), RT_WORK_GROUP_SIZE,
                                         openClKernelName.c_str(), nullptr, &sizeOfWorkGroupSize);
  if (errorCode != ACL_SUCCESS) {
    return false;
  }
  errorCode = g_complibApi._aclQueryInfo(compileHandle, program_->binaryElf(), RT_WORK_GROUP_SIZE,
                                         openClKernelName.c_str(), workGroupInfo_.compileSize_,
                                         &sizeOfWorkGroupSize);
  if (errorCode != ACL_SUCCESS) {
    return false;
  }

  uint32_t wavefront_size = 0;
  if (HSA_STATUS_SUCCESS !=
      hsa_agent_get_info(program_->hsaDevice(), HSA_AGENT_INFO_WAVEFRONT_SIZE, &wavefront_size)) {
    return false;
  }
  assert(wavefront_size > 0);

  // Setting it the same as used LDS.
  workGroupInfo_.localMemSize_ = workgroupGroupSegmentByteSize_;
  workGroupInfo_.privateMemSize_ = workitemPrivateSegmentByteSize_;
  workGroupInfo_.usedLDSSize_ = workgroupGroupSegmentByteSize_;
  workGroupInfo_.preferredSizeMultiple_ = wavefront_size;

  // Query kernel header object to initialize the number of
  // SGPR's and VGPR's used by the kernel
  const void* kernelHostPtr = nullptr;
  if (Device::loaderQueryHostAddress(reinterpret_cast<const void*>(kernelCodeHandle_),
                                     &kernelHostPtr) == HSA_STATUS_SUCCESS) {
    auto akc = reinterpret_cast<const amd_kernel_code_t*>(kernelHostPtr);
    workGroupInfo_.usedSGPRs_ = akc->wavefront_sgpr_count;
    workGroupInfo_.usedVGPRs_ = akc->workitem_vgpr_count;
  } else {
    workGroupInfo_.usedSGPRs_ = 0;
    workGroupInfo_.usedVGPRs_ = 0;
  }

  workGroupInfo_.usedStackSize_ = 0;
  workGroupInfo_.wavefrontPerSIMD_ = program_->dev().info().maxWorkItemSizes_[0] / wavefront_size;
  workGroupInfo_.wavefrontSize_ = wavefront_size;
  if (workGroupInfo_.compileSize_[0] != 0) {
    workGroupInfo_.size_ = workGroupInfo_.compileSize_[0] * workGroupInfo_.compileSize_[1] *
        workGroupInfo_.compileSize_[2];
  } else {
    workGroupInfo_.size_ = program_->dev().info().maxWorkGroupSize_;
  }

  // Pull out printf metadata from the ELF
  size_t sizeOfPrintfList;
  errorCode = g_complibApi._aclQueryInfo(compileHandle, program_->binaryElf(), RT_GPU_PRINTF_ARRAY,
                                         openClKernelName.c_str(), nullptr, &sizeOfPrintfList);
  if (errorCode != ACL_SUCCESS) {
    return false;
  }

  // Make sure kernel has any printf info
  if (0 != sizeOfPrintfList) {
    std::unique_ptr<char[]> aclPrintfList(new char[sizeOfPrintfList]);
    if (!aclPrintfList) {
      return false;
    }
    errorCode = g_complibApi._aclQueryInfo(compileHandle, program_->binaryElf(),
                                           RT_GPU_PRINTF_ARRAY, openClKernelName.c_str(),
                                           aclPrintfList.get(), &sizeOfPrintfList);
    if (errorCode != ACL_SUCCESS) {
      return false;
    }

    // Set the Printf List
    initPrintf(reinterpret_cast<aclPrintfFmt*>(aclPrintfList.get()));
  }
  return true;
#endif  // !defined(WITH_LIGHTNING_COMPILER)
}

#if defined(WITH_LIGHTNING_COMPILER)
void Kernel::initPrintf_LC(const std::vector<std::string>& printfInfoStrings) {
  for (auto str : printfInfoStrings) {
    std::vector<std::string> tokens;

    size_t end, pos = 0;
    do {
      end = str.find_first_of(':', pos);
      tokens.push_back(str.substr(pos, end - pos));
      pos = end + 1;
    } while (end != std::string::npos);

    if (tokens.size() < 2) {
      LogPrintfWarning("Invalid PrintInfo string: \"%s\"", str.c_str());
      continue;
    }

    pos = 0;
    size_t printfInfoID = std::stoi(tokens[pos++]);
    if (printf_.size() <= printfInfoID) {
      printf_.resize(printfInfoID + 1);
    }
    PrintfInfo& info = printf_[printfInfoID];

    size_t numSizes = std::stoi(tokens[pos++]);
    end = pos + numSizes;

    // ensure that we have the correct number of tokens
    if (tokens.size() < end + 1 /*last token is the fmtString*/) {
      LogPrintfWarning("Invalid PrintInfo string: \"%s\"", str.c_str());
      continue;
    }

    // push the argument sizes
    while (pos < end) {
      info.arguments_.push_back(std::stoi(tokens[pos++]));
    }

    // FIXME: We should not need this! [
    std::string& fmt = tokens[pos];
    bool need_nl = true;

    for (pos = 0; pos < fmt.size(); ++pos) {
      char symbol = fmt[pos];
      need_nl = true;
      if (symbol == '\\') {
        switch (fmt[pos + 1]) {
          case 'a':
            pos++;
            symbol = '\a';
            break;
          case 'b':
            pos++;
            symbol = '\b';
            break;
          case 'f':
            pos++;
            symbol = '\f';
            break;
          case 'n':
            pos++;
            symbol = '\n';
            need_nl = false;
            break;
          case 'r':
            pos++;
            symbol = '\r';
            break;
          case 'v':
            pos++;
            symbol = '\v';
            break;
          case '7':
            if (fmt[pos + 2] == '2') {
              pos += 2;
              symbol = '\72';
            }
            break;
          default:
            break;
        }
      }
      info.fmtString_.push_back(symbol);
    }
    if (need_nl) {
      info.fmtString_ += "\n";
    }
    // ]
  }
}
#endif  // defined(WITH_LIGHTNING_COMPILER)

void Kernel::initPrintf(const aclPrintfFmt* aclPrintf) {
  PrintfInfo info;
  uint index = 0;
  for (; aclPrintf->struct_size != 0; aclPrintf++) {
    index = aclPrintf->ID;
    if (printf_.size() <= index) {
      printf_.resize(index + 1);
    }
    std::string pfmt = aclPrintf->fmtStr;
    bool need_nl = true;
    for (size_t pos = 0; pos < pfmt.size(); ++pos) {
      char symbol = pfmt[pos];
      need_nl = true;
      if (symbol == '\\') {
        switch (pfmt[pos + 1]) {
          case 'a':
            pos++;
            symbol = '\a';
            break;
          case 'b':
            pos++;
            symbol = '\b';
            break;
          case 'f':
            pos++;
            symbol = '\f';
            break;
          case 'n':
            pos++;
            symbol = '\n';
            need_nl = false;
            break;
          case 'r':
            pos++;
            symbol = '\r';
            break;
          case 'v':
            pos++;
            symbol = '\v';
            break;
          case '7':
            if (pfmt[pos + 2] == '2') {
              pos += 2;
              symbol = '\72';
            }
            break;
          default:
            break;
        }
      }
      info.fmtString_.push_back(symbol);
    }
    if (need_nl) {
      info.fmtString_ += "\n";
    }
    uint32_t* tmp_ptr = const_cast<uint32_t*>(aclPrintf->argSizes);
    for (uint i = 0; i < aclPrintf->numSizes; i++, tmp_ptr++) {
      info.arguments_.push_back(*tmp_ptr);
    }
    printf_[index] = info;
    info.arguments_.clear();
  }
}


Kernel::~Kernel() {
  while (!hsailArgList_.empty()) {
    Argument* kernelArgPointer = hsailArgList_.back();
    delete kernelArgPointer;
    hsailArgList_.pop_back();
  }
}

}  // namespace roc
#endif  // WITHOUT_HSA_BACKEND