52 lines
1.9 KiB
C
52 lines
1.9 KiB
C
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// Copyright 2021 The Tint Authors.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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#ifndef SRC_TRANSFORM_PAD_ARRAY_ELEMENTS_H_
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#define SRC_TRANSFORM_PAD_ARRAY_ELEMENTS_H_
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#include "src/transform/transform.h"
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namespace tint {
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namespace transform {
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/// PadArrayElements is a transform that replaces array types with an explicit
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/// stride that is larger than the implicit stride, with an array of a new
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/// structure type. This structure holds with a single field of the element
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/// type, decorated with a [[size]] decoration to pad the structure to the
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/// required array stride. The new array types have no explicit stride,
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/// structure size is equal to the desired stride.
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/// Array index expressions and constructors are also adjusted to deal with this
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/// structure element type.
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/// This transform helps with backends that cannot directly return arrays or use
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/// them as parameters.
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class PadArrayElements : public Transform {
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public:
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/// Constructor
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PadArrayElements();
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/// Destructor
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~PadArrayElements() override;
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/// Runs the transform on `program`, returning the transformation result.
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/// @param program the source program to transform
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/// @param data optional extra transform-specific input data
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/// @returns the transformation result
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Output Run(const Program* program, const DataMap& data = {}) override;
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};
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} // namespace transform
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} // namespace tint
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#endif // SRC_TRANSFORM_PAD_ARRAY_ELEMENTS_H_
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