xref: /llvm-project/mlir/lib/CAPI/Dialect/SparseTensor.cpp (revision 1944c4f76b47c0b86c91845987baca24fd4775f8)
1 //===- Tensor.cpp - C API for SparseTensor dialect ------------------------===//
2 //
3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4 // See https://llvm.org/LICENSE.txt for license information.
5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6 //
7 //===----------------------------------------------------------------------===//
8 
9 #include "mlir-c/Dialect/SparseTensor.h"
10 #include "mlir-c/IR.h"
11 #include "mlir/CAPI/AffineMap.h"
12 #include "mlir/CAPI/Registration.h"
13 #include "mlir/Dialect/SparseTensor/IR/SparseTensor.h"
14 #include "mlir/Support/LLVM.h"
15 
16 using namespace llvm;
17 using namespace mlir::sparse_tensor;
18 
19 MLIR_DEFINE_CAPI_DIALECT_REGISTRATION(SparseTensor, sparse_tensor,
20                                       mlir::sparse_tensor::SparseTensorDialect)
21 
22 // Ensure the C-API enums are int-castable to C++ equivalents.
23 static_assert(static_cast<int>(MLIR_SPARSE_TENSOR_LEVEL_DENSE) ==
24                       static_cast<int>(LevelType::Dense) &&
25                   static_cast<int>(MLIR_SPARSE_TENSOR_LEVEL_COMPRESSED) ==
26                       static_cast<int>(LevelType::Compressed) &&
27                   static_cast<int>(MLIR_SPARSE_TENSOR_LEVEL_COMPRESSED_NU) ==
28                       static_cast<int>(LevelType::CompressedNu) &&
29                   static_cast<int>(MLIR_SPARSE_TENSOR_LEVEL_COMPRESSED_NO) ==
30                       static_cast<int>(LevelType::CompressedNo) &&
31                   static_cast<int>(MLIR_SPARSE_TENSOR_LEVEL_COMPRESSED_NU_NO) ==
32                       static_cast<int>(LevelType::CompressedNuNo) &&
33                   static_cast<int>(MLIR_SPARSE_TENSOR_LEVEL_SINGLETON) ==
34                       static_cast<int>(LevelType::Singleton) &&
35                   static_cast<int>(MLIR_SPARSE_TENSOR_LEVEL_SINGLETON_NU) ==
36                       static_cast<int>(LevelType::SingletonNu) &&
37                   static_cast<int>(MLIR_SPARSE_TENSOR_LEVEL_SINGLETON_NO) ==
38                       static_cast<int>(LevelType::SingletonNo) &&
39                   static_cast<int>(MLIR_SPARSE_TENSOR_LEVEL_SINGLETON_NU_NO) ==
40                       static_cast<int>(LevelType::SingletonNuNo),
41               "MlirSparseTensorLevelType (C-API) and LevelType (C++) mismatch");
42 
43 bool mlirAttributeIsASparseTensorEncodingAttr(MlirAttribute attr) {
44   return isa<SparseTensorEncodingAttr>(unwrap(attr));
45 }
46 
47 MlirAttribute
48 mlirSparseTensorEncodingAttrGet(MlirContext ctx, intptr_t lvlRank,
49                                 MlirSparseTensorLevelType const *lvlTypes,
50                                 MlirAffineMap dimToLvl, MlirAffineMap lvlToDim,
51                                 int posWidth, int crdWidth) {
52   SmallVector<LevelType> cppLvlTypes;
53   cppLvlTypes.reserve(lvlRank);
54   for (intptr_t l = 0; l < lvlRank; ++l)
55     cppLvlTypes.push_back(static_cast<LevelType>(lvlTypes[l]));
56   return wrap(SparseTensorEncodingAttr::get(unwrap(ctx), cppLvlTypes,
57                                             unwrap(dimToLvl), unwrap(lvlToDim),
58                                             posWidth, crdWidth));
59 }
60 
61 MlirAffineMap mlirSparseTensorEncodingAttrGetDimToLvl(MlirAttribute attr) {
62   return wrap(cast<SparseTensorEncodingAttr>(unwrap(attr)).getDimToLvl());
63 }
64 
65 MlirAffineMap mlirSparseTensorEncodingAttrGetLvlToDim(MlirAttribute attr) {
66   return wrap(cast<SparseTensorEncodingAttr>(unwrap(attr)).getLvlToDim());
67 }
68 
69 intptr_t mlirSparseTensorEncodingGetLvlRank(MlirAttribute attr) {
70   return cast<SparseTensorEncodingAttr>(unwrap(attr)).getLvlRank();
71 }
72 
73 MlirSparseTensorLevelType
74 mlirSparseTensorEncodingAttrGetLvlType(MlirAttribute attr, intptr_t lvl) {
75   return static_cast<MlirSparseTensorLevelType>(
76       cast<SparseTensorEncodingAttr>(unwrap(attr)).getLvlType(lvl));
77 }
78 
79 int mlirSparseTensorEncodingAttrGetPosWidth(MlirAttribute attr) {
80   return cast<SparseTensorEncodingAttr>(unwrap(attr)).getPosWidth();
81 }
82 
83 int mlirSparseTensorEncodingAttrGetCrdWidth(MlirAttribute attr) {
84   return cast<SparseTensorEncodingAttr>(unwrap(attr)).getCrdWidth();
85 }
86