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//===- ViewType.h - Linalg ViewType definition --------------------------===//
//
// Copyright 2019 The MLIR Authors.
//
// 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.
// =============================================================================
#ifndef LINALG1_VIEWTYPE_H_
#define LINALG1_VIEWTYPE_H_
#include "linalg1/Types.h"
#include "mlir/IR/Types.h"
namespace linalg {
class ViewTypeStorage;
/// A ViewType represents a range abstraction on top of an underlying storage
/// type. It is parameterizable by the underlying element type and the rank of
/// the view.
class ViewType
: public mlir::Type::TypeBase<ViewType, mlir::Type, ViewTypeStorage> {
public:
//////////////////////////////////////////////////////////////////////////////
// Hooks to customize the behavior of this type.
//////////////////////////////////////////////////////////////////////////////
// Used to implement llvm-style cast.
using Base::Base;
// Used to implement llvm-style cast.
static bool kindof(unsigned kind) { return kind == LinalgTypes::View; }
/// Construction hook.
static ViewType get(mlir::MLIRContext *context, mlir::Type elementType,
unsigned rank);
//////////////////////////////////////////////////////////////////////////////
// Type-specific functionality.
//////////////////////////////////////////////////////////////////////////////
/// Return the underlying elemental type.
mlir::Type getElementType();
/// Return the rank of the view.
/// This is the number of indexings needed to reach an underlying element.
unsigned getRank();
};
} // namespace linalg
#endif // LINALG1_VIEWTYPE_H_
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