//===--------------------------- main.cpp ---------------------------------===//
//
// Copyright 2019 The IBM Research Authors.
//
// =============================================================================
//
//===----------------------------------------------------------------------===//

#include "src/MainUtils.hpp"

using namespace std;
using namespace onnx_mlir;

int main(int argc, char *argv[]) {
  registerDialects();

  llvm::cl::OptionCategory OnnxMlirOptions(
      "ONNX MLIR Options", "These are frontend options.");
  llvm::cl::opt<string> inputFilename(llvm::cl::Positional,
      llvm::cl::desc("<input file>"), llvm::cl::init("-"),
      llvm::cl::cat(OnnxMlirOptions));

  llvm::cl::opt<EmissionTargetType> emissionTarget(
      llvm::cl::desc("Choose target to emit:"),
      llvm::cl::values(
          clEnumVal(EmitONNXBasic,
              "Ingest ONNX and emit the basic ONNX operations without"
              "inferred shapes."),
          clEnumVal(
              EmitONNXIR, "Ingest ONNX and emit corresponding ONNX dialect."),
          clEnumVal(
              EmitMLIR, "Lower model to MLIR built-in transformation dialect."),
          clEnumVal(EmitLLVMIR, "Lower model to LLVM IR (LLVM dialect)."),
          clEnumVal(EmitLib, "Lower model to LLVM IR, emit (to file) "
                             "LLVM bitcode for model, compile and link it to a "
                             "shared library.")),
      llvm::cl::init(EmitLib), llvm::cl::cat(OnnxMlirOptions));

  llvm::cl::HideUnrelatedOptions(OnnxMlirOptions);
  llvm::cl::ParseCommandLineOptions(
      argc, argv, "ONNX MLIR modular optimizer driver\n");

  mlir::MLIRContext context;
  mlir::OwningModuleRef module;
  processInputFile(inputFilename, emissionTarget, context, module);

  // Input file base name.
  string outputBaseName =
      inputFilename.substr(0, inputFilename.find_last_of("."));

  mlir::PassManager pm(&context);
  if (emissionTarget >= EmitONNXIR) {
    addONNXToMLIRPasses(pm);
  }

  if (emissionTarget >= EmitMLIR) {
    addONNXToKrnlPasses(pm);
    addKrnlToAffinePasses(pm);
  }

  if (emissionTarget >= EmitLLVMIR)
    addKrnlToLLVMPasses(pm);

  if (mlir::failed(pm.run(*module)))
    return 4;

  emitOutputFiles(outputBaseName, emissionTarget, context, module);

  return 0;
}