// Copyright (c) 2018 PaddlePaddle Authors. All Rights Reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//     http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

#include "paddle/fluid/inference/analysis/ir_pass_manager.h"

#include <map>
#include <memory>
#include <string>
#include <unordered_map>
#include <unordered_set>
#include <utility>
#include <vector>

#include "paddle/fluid/framework/ir/fuse_pass_base.h"
#include "paddle/fluid/framework/ir/graph.h"
#include "paddle/fluid/framework/scope.h"
#include "paddle/fluid/inference/analysis/argument.h"
#include "paddle/fluid/string/pretty_log.h"

namespace paddle {
namespace inference {
namespace analysis {
using string::PrettyLog;
using string::PrettyLogEndl;
using string::Style;

IRPassManager::IRPassManager(Argument *argument) {
  disable_logs_ = argument->disable_logs();

  ARGUMENT_CHECK_FIELD(argument, ir_analysis_passes);
  CreatePasses(argument, argument->ir_analysis_passes());
}

void IRPassManager::CreatePasses(Argument *argument,
                                 const std::vector<std::string> &passes) {
  std::string pre_pass;
  int pass_num = 0;
  for (const std::string &pass_name : passes) {
    auto pass = framework::ir::PassRegistry::Instance().Get(pass_name);
    pass->Set("use_varseqlen", new bool(argument->tensorrt_use_varseqlen()));
    pass->Set("with_interleaved",
              new bool(argument->tensorrt_with_interleaved()));
    pass->Set("tensorrt_transformer_posid",
              new std::string(argument->tensorrt_transformer_posid()));
    pass->Set("tensorrt_transformer_maskid",
              new std::string(argument->tensorrt_transformer_maskid()));
    pass->Set("disable_logs", new bool(argument->disable_logs()));
    auto precision_mode = argument->tensorrt_precision_mode();
    bool enable_int8 = precision_mode == AnalysisConfig::Precision::kInt8;
    pass->Set("enable_int8", new bool(enable_int8));
    pass->Set("max_input_shape",
              new std::map<std::string, std::vector<int>>(
                  argument->max_input_shape()));
    pass->Set("min_input_shape",
              new std::map<std::string, std::vector<int>>(
                  argument->min_input_shape()));
    pass->Set("optim_input_shape",
              new std::map<std::string, std::vector<int>>(
                  argument->optim_input_shape()));
    // Now, shape tensor value is not explicit set by user,
    // it is collected through API CollectShapeRangeInfo.
    pass->Set("max_shape_tensor",
              new std::map<std::string, std::vector<int>>());
    pass->Set("min_shape_tensor",
              new std::map<std::string, std::vector<int>>());
    pass->Set("optim_shape_tensor",
              new std::map<std::string, std::vector<int>>());

    // tuned trt dynamic_shape
    pass->Set("trt_tuned_dynamic_shape",
              new bool(argument->tensorrt_tuned_dynamic_shape()));
    bool with_dynamic_shape = (argument->max_input_shape().size() > 0 &&
                               argument->min_input_shape().size() > 0 &&
                               argument->optim_input_shape().size() > 0) ||
                              argument->tensorrt_tuned_dynamic_shape();
    pass->Set("with_dynamic_shape", new bool(with_dynamic_shape));

    // mixed precision related
    pass->Set("model_precision", new int(argument->model_precision()));
    pass->Set(
        "mixed_black_list",
        new std::unordered_set<std::string>(argument->mixed_black_list()));
    pass->Set("enable_gpu_half", new bool(argument->enable_gpu_half()));
    pass->Set("mixed_precision_mode",
              new int(argument->mixed_precision_mode()));

    if (pass_name == "graph_viz_pass") {
      std::string optim_cache_dir = argument->optim_cache_dir();
      std::string dot_file_path;
      if (optim_cache_dir.empty()) {
        dot_file_path = std::to_string(pass_num) + "_ir_" +
                        (pre_pass.empty() ? "origin" : pre_pass) + ".dot";
      } else {
        dot_file_path = optim_cache_dir + "/" + std::to_string(pass_num) +
                        "_ir_" + (pre_pass.empty() ? "origin" : pre_pass) +
                        ".dot";
      }
      pass->Set("graph_viz_path", new std::string(std::move(dot_file_path)));
      pass->Set("optim_cache_dir", new std::string(std::move(optim_cache_dir)));
      pass_num++;
    } else if (pass_name == "mkldnn_placement_pass") {
      pass->Set("mkldnn_enabled_op_types",
                new std::unordered_set<std::string>(
                    argument->mkldnn_enabled_op_types()));
    } else if (pass_name == "cudnn_placement_pass") {
      pass->Set("cudnn_enabled_op_types",
                new std::unordered_set<std::string>());
#ifdef PADDLE_WITH_MKLDNN
    } else if (pass_name == "cpu_quantize_placement_pass") {
      pass->Set("quantize_enabled_op_types",
                new std::unordered_set<std::string>(
                    argument->quantize_enabled_op_types()));
      pass->Set(
          "quantize_excluded_op_ids",
          new std::unordered_set<int>(argument->quantize_excluded_op_ids()));
    } else if (pass_name == "cpu_quantize_pass") {
      if (argument->quantize_enabled_op_types().count("conv2d") ||
          argument->quantize_enabled_op_types().count("depthwise_conv2d")) {
        pass->Set("data_layout", new std::string("NHWC"));
      }
      pass->Set("quant_var_scales",
                new VarQuantScale(argument->quant_var_scales()));
    } else if (pass_name == "cpu_bfloat16_placement_pass") {
      pass->Set("bfloat16_enabled_op_types",
                new std::unordered_set<std::string>(
                    argument->bfloat16_enabled_op_types()));
#endif
    } else if (pass_name == "tensorrt_subgraph_pass") {
      pass->Set("workspace_size",
                new int64_t(argument->tensorrt_workspace_size()));
      pass->Set("max_batch_size", new int(argument->tensorrt_max_batch_size()));
      pass->Set("min_subgraph_size",
                new int(argument->tensorrt_min_subgraph_size()));
      pass->Set("program",
                new framework::ProgramDesc *(&argument->main_program()));
      pass->Set("predictor_id", new int(argument->predictor_id()));
      bool use_calib_mode = argument->tensorrt_use_calib_mode();
      pass->Set("use_calib_mode", new bool(use_calib_mode));
      pass->Set("precision_mode",
                new AnalysisConfig::Precision(precision_mode));
      pass->Set("context_memory_sharing",
                new bool(argument->trt_engine_memory_sharing()));
      bool use_static_engine = argument->tensorrt_use_static_engine();
      bool model_from_memory = argument->model_from_memory();
      std::string optim_cache_dir = argument->optim_cache_dir();
      bool int8_valid = !(model_from_memory && optim_cache_dir.empty() &&
                          enable_int8 && use_calib_mode);
      PADDLE_ENFORCE_EQ(
          int8_valid,
          true,
          platform::errors::PreconditionNotMet(
              "When you are in TRT INT8 mode, and load model from "
              "memory, you should set optim_cache_dir using "
              "config.SetOptimCacheDir()"));
      if (model_from_memory && use_static_engine) {
        PADDLE_ENFORCE_EQ(
            optim_cache_dir.empty(),
            false,
            platform::errors::PreconditionNotMet(
                "When you are using Paddle-TRT, and using load model "
                "from memory, and also set the use_static to true. "
                "you must set optim_cache_dir using "
                "config.SetOptimCacheDir()."));
      }

      if (!optim_cache_dir.empty()) {
        if (!PathExists(optim_cache_dir)) {
          PADDLE_ENFORCE_NE(
              MKDIR(optim_cache_dir.c_str()),
              -1,
              platform::errors::PreconditionNotMet(
                  "Can not create optimize cache directory: %s, Make sure you "
                  "have permission to write",
                  optim_cache_dir));
        }
        pass->Set("model_opt_cache_dir", new std::string(optim_cache_dir));
      } else if (use_static_engine || enable_int8) {
        std::string model_opt_cache_dir =
            argument->Has("model_dir")
                ? argument->model_dir()
                : GetDirRoot(argument->model_program_path());
        pass->Set(
            "model_opt_cache_dir",
            new std::string(GetOrCreateModelOptCacheDir(model_opt_cache_dir)));
      }
      pass->Set("gpu_device_id", new int(argument->gpu_device_id()));
      pass->Set("use_static_engine", new bool(use_static_engine));
      pass->Set("model_from_memory", new bool(argument->model_from_memory()));
      pass->Set("use_inspector", new bool(argument->tensorrt_use_inspector()));

      // tuned trt dynamic_shape
      pass->Set("trt_shape_range_info_path",
                new std::string(argument->tensorrt_shape_range_info_path()));
      pass->Set("trt_allow_build_at_runtime",
                new bool(argument->tensorrt_allow_build_at_runtime()));
      pass->Set(
          "trt_disabled_ops",
          new std::vector<std::string>(argument->tensorrt_disabled_ops()));
      pass->Set("trt_use_dla", new bool(argument->tensorrt_use_dla()));
      pass->Set("trt_dla_core", new int(argument->tensorrt_dla_core()));
      // Setting the disable_trt_plugin_fp16 to true means that TRT plugin will
      // not run fp16.
      pass->Set("disable_trt_plugin_fp16",
                new bool(argument->disable_trt_plugin_fp16()));
    } else if (pass_name == "dlnne_subgraph_pass") {
      auto precision_mode = argument->dlnne_precision_mode();
      pass->Set("min_subgraph_size",
                new int(argument->dlnne_min_subgraph_size()));
      pass->Set("max_batch_size", new int(argument->dlnne_max_batch_size()));
      pass->Set("use_static_batch",
                new bool(argument->dlnne_use_static_batch()));
      pass->Set("weight_share_mode",
                new std::string(argument->dlnne_weight_share_mode()));
      pass->Set("disable_nodes_by_outputs",
                new std::unordered_set<std::string>(
                    argument->dlnne_disable_nodes_by_outputs()));
      pass->Set("use_calib_mode", new bool(argument->dlnne_use_calib_mode()));
      pass->Set("precision_mode",
                new AnalysisConfig::Precision(precision_mode));
      pass->Set("input_shape_dict",
                new std::map<std::string, std::vector<int64_t>>(
                    argument->dlnne_input_shape_dict()));
      pass->Set("program",
                new framework::ProgramDesc *(&argument->main_program()));
    } else if (pass_name == "memory_optimize_pass") {
      pass->Set("root_predictor_id", new int(argument->root_predictor_id()));
    } else if (pass_name == "build_cinn_pass") {
      pass->Set("is_inference_stage", new bool(argument->use_cinn_compiler()));
    }
    if (pass_name == "lite_subgraph_pass") {
      bool lite_enable_int8 =
          argument->lite_precision_mode() == AnalysisConfig::Precision::kInt8;
      pass->Set("program",
                new framework::ProgramDesc *(&argument->main_program()));
      pass->Set("lite_ops_filter",
                new std::vector<std::string>(argument->lite_ops_filter()));
      pass->Set("predictor_id", new int(argument->predictor_id()));
      pass->Erase("enable_int8");
      pass->Set("enable_int8", new bool(lite_enable_int8));
      pass->Set("use_gpu", new bool(argument->use_gpu()));
      pass->Set("zero_copy", new bool(argument->lite_zero_copy()));
      pass->Set("use_xpu", new bool(argument->use_xpu()));
      pass->Set("xpu_l3_workspace_size",
                new int(argument->xpu_l3_workspace_size()));
      pass->Set("use_opencl", new bool(argument->use_opencl()));
      pass->Set("cpu_math_library_num_threads",
                new int(argument->cpu_math_library_num_threads()));
      pass->Set("locked", new bool(argument->xpu_locked()));
      pass->Set("autotune", new bool(argument->xpu_autotune()));
      pass->Set("autotune_file",
                new std::string(argument->xpu_autotune_file()));
      pass->Set("precision", new std::string(argument->xpu_precision()));
      pass->Set("adaptive_seqlen", new bool(argument->xpu_adaptive_seqlen()));
      pass->Set("xpu_device_id", new int(argument->xpu_device_id()));
      pass->Set("enable_multi_stream",
                new bool(argument->xpu_enable_multi_stream()));
      // NNAdapter Related
      pass->Set("use_nnadapter", new bool(argument->use_nnadapter()));
      pass->Set("nnadapter_model_cache_dir",
                new std::string(argument->nnadapter_model_cache_dir()));
      pass->Set(
          "nnadapter_device_names",
          new std::vector<std::string>(argument->nnadapter_device_names()));
      pass->Set("nnadapter_context_properties",
                new std::string(argument->nnadapter_context_properties()));
      pass->Set("nnadapter_subgraph_partition_config_buffer",
                new std::string(
                    argument->nnadapter_subgraph_partition_config_buffer()));
      pass->Set("nnadapter_subgraph_partition_config_path",
                new std::string(
                    argument->nnadapter_subgraph_partition_config_path()));
      pass->Set("nnadapter_model_cache_buffer",
                new std::vector<std::vector<char>>(
                    argument->nnadapter_model_cache_buffer()));
      pass->Set("nnadapter_model_cache_token",
                new std::vector<std::string>(
                    argument->nnadapter_model_cache_token()));
    }
    if (pass_name == "fc_fuse_pass") {
      pass->Set("use_gpu", new bool(argument->use_gpu()));
      bool fc_mkldnn_pass = 0;
      for (const std::string &pass_n : passes) {
        if (pass_n == "fc_mkldnn_pass") {
          fc_mkldnn_pass = 1;
        }
      }
      bool use_fc_padding = !fc_mkldnn_pass && argument->use_fc_padding();
      pass->Set("use_fc_padding", new bool(use_fc_padding));
    }
    pre_pass = pass_name;

    passes_.emplace_back(std::move(pass));
  }
}

std::unique_ptr<Graph> IRPassManager::Apply(std::unique_ptr<Graph> graph) {
  if (passes_.empty()) {
    return graph;
  }
  PADDLE_ENFORCE_NOT_NULL(
      graph.get(),
      platform::errors::PreconditionNotMet("Graph cannot be NULL."));
  // Apply all the passes
  for (const auto &pass : passes_) {
    if (pass->Type() != "graph_viz_pass" && !disable_logs_) {
      PrettyLogEndl(Style::H2(), "--- Running IR pass [%s]", pass->Type());
    }
    // delete_fill_constant_op_pass is not apply under trt dynamic shape
    if (pass->Type() == "delete_fill_constant_op_pass") {
      bool use_dynamic = pass->Get<bool>("with_dynamic_shape");
      if (use_dynamic) continue;
    }
    graph.reset(pass->Apply(graph.release()));
  }
  return graph;
}

framework::proto::ProgramDesc IRPassManager::AcquireProgram(
    std::unique_ptr<Graph> *graph, ProgramDesc *program) const {
  auto pass =
      framework::ir::PassRegistry::Instance().Get("graph_to_program_pass");

  // Direct using ProgramDesc desc(argument->main_program()) may cause
  // incomplete copies of information.
  ProgramDesc desc;
  desc.CopyFrom(*program->Proto());
  pass->SetNotOwned("program", &desc);
  auto *the_graph = graph->release();
  graph->reset(pass->Apply(the_graph));
  return *desc.Proto();
}

}  // namespace analysis
}  // namespace inference
}  // namespace paddle