| 1 | //===- DataLayoutAnalysis.h - API for Querying Nested Data Layout -*- C++ -*-=// |
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| 2 | // |
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| 3 | // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
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| 4 | // See https://llvm.org/LICENSE.txt for license information. |
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| 5 | // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
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| 6 | // |
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| 7 | //===----------------------------------------------------------------------===// |
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| 8 | |
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| 9 | #ifndef MLIR_ANALYSIS_DATALAYOUTANALYSIS_H |
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| 10 | #define MLIR_ANALYSIS_DATALAYOUTANALYSIS_H |
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| 11 | |
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| 12 | #include "mlir/Support/LLVM.h" |
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| 13 | #include "llvm/ADT/DenseMap.h" |
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| 14 | |
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| 15 | #include <memory> |
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| 16 | |
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| 17 | namespace mlir { |
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| 18 | |
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| 19 | class Operation; |
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| 20 | class DataLayout; |
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| 21 | |
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| 22 | /// Stores data layout objects for each operation that specifies the data layout |
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| 23 | /// above and below the given operation. |
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| 24 | class DataLayoutAnalysis { |
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| 25 | public: |
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| 26 | /// Constructs the data layouts. |
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| 27 | explicit DataLayoutAnalysis(Operation *root); |
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| 28 | |
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| 29 | /// Returns the data layout active at the given operation, that is the |
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| 30 | /// data layout specified by the closest ancestor that can specify one, or the |
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| 31 | /// default layout if there is no such ancestor. |
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| 32 | const DataLayout &getAbove(Operation *operation) const; |
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| 33 | |
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| 34 | /// Returns the data layout specified by the given operation or its closest |
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| 35 | /// ancestor that can specify one. |
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| 36 | const DataLayout &getAtOrAbove(Operation *operation) const; |
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| 37 | |
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| 38 | private: |
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| 39 | /// Storage for individual data layouts. |
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| 40 | DenseMap<Operation *, std::unique_ptr<DataLayout>> layouts; |
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| 41 | |
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| 42 | /// Default data layout in case no operations specify one. |
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| 43 | std::unique_ptr<DataLayout> defaultLayout; |
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| 44 | }; |
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| 45 | |
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| 46 | } // namespace mlir |
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| 47 | |
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| 48 | #endif // MLIR_ANALYSIS_DATALAYOUTANALYSIS_H |
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| 49 | |
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