//===- MaximizeValueSemantics.cpp --------------------------------*- C++-*-===//
//
// This file is licensed under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//

#include "PassDetail.h"

#include "mlir/IR/Builders.h"
#include "mlir/IR/BuiltinOps.h"
#include "mlir/IR/PatternMatch.h"
#include "mlir/Transforms/GreedyPatternRewriteDriver.h"
#include "npcomp/Dialect/Torch/IR/TorchOps.h"
#include "npcomp/Dialect/Torch/Transforms/Passes.h"

using namespace mlir;
using namespace mlir::NPCOMP;
using namespace mlir::NPCOMP::Torch;

namespace {

class MaximizeValueSemanticsPass
    : public MaximizeValueSemanticsBase<MaximizeValueSemanticsPass> {
  void runOnOperation() override {
    MLIRContext *context = &getContext();
    auto func = getOperation();

    RewritePatternSet patterns(context);
    CopyTensorOp::getCanonicalizationPatterns(patterns, context);
    TensorStaticInfoCastOp::getCanonicalizationPatterns(patterns, context);
    (void)applyPatternsAndFoldGreedily(func, std::move(patterns));
  }
};

} // namespace

std::unique_ptr<OperationPass<FuncOp>>
mlir::NPCOMP::Torch::createMaximizeValueSemanticsPass() {
  return std::make_unique<MaximizeValueSemanticsPass>();
}