1 //===- BuiltinAttributes.cpp - C Interface to MLIR Builtin Attributes -----===//
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/BuiltinAttributes.h"
10 #include "mlir/CAPI/AffineMap.h"
11 #include "mlir/CAPI/IR.h"
12 #include "mlir/CAPI/Support.h"
13 #include "mlir/IR/Attributes.h"
14 #include "mlir/IR/BuiltinTypes.h"
15 
16 using namespace mlir;
17 
18 MlirAttribute mlirAttributeGetNull() { return {nullptr}; }
19 
20 //===----------------------------------------------------------------------===//
21 // Affine map attribute.
22 //===----------------------------------------------------------------------===//
23 
24 bool mlirAttributeIsAAffineMap(MlirAttribute attr) {
25   return unwrap(attr).isa<AffineMapAttr>();
26 }
27 
28 MlirAttribute mlirAffineMapAttrGet(MlirAffineMap map) {
29   return wrap(AffineMapAttr::get(unwrap(map)));
30 }
31 
32 MlirAffineMap mlirAffineMapAttrGetValue(MlirAttribute attr) {
33   return wrap(unwrap(attr).cast<AffineMapAttr>().getValue());
34 }
35 
36 //===----------------------------------------------------------------------===//
37 // Array attribute.
38 //===----------------------------------------------------------------------===//
39 
40 bool mlirAttributeIsAArray(MlirAttribute attr) {
41   return unwrap(attr).isa<ArrayAttr>();
42 }
43 
44 MlirAttribute mlirArrayAttrGet(MlirContext ctx, intptr_t numElements,
45                                MlirAttribute const *elements) {
46   SmallVector<Attribute, 8> attrs;
47   return wrap(
48       ArrayAttr::get(unwrap(ctx), unwrapList(static_cast<size_t>(numElements),
49                                              elements, attrs)));
50 }
51 
52 intptr_t mlirArrayAttrGetNumElements(MlirAttribute attr) {
53   return static_cast<intptr_t>(unwrap(attr).cast<ArrayAttr>().size());
54 }
55 
56 MlirAttribute mlirArrayAttrGetElement(MlirAttribute attr, intptr_t pos) {
57   return wrap(unwrap(attr).cast<ArrayAttr>().getValue()[pos]);
58 }
59 
60 //===----------------------------------------------------------------------===//
61 // Dictionary attribute.
62 //===----------------------------------------------------------------------===//
63 
64 bool mlirAttributeIsADictionary(MlirAttribute attr) {
65   return unwrap(attr).isa<DictionaryAttr>();
66 }
67 
68 MlirAttribute mlirDictionaryAttrGet(MlirContext ctx, intptr_t numElements,
69                                     MlirNamedAttribute const *elements) {
70   SmallVector<NamedAttribute, 8> attributes;
71   attributes.reserve(numElements);
72   for (intptr_t i = 0; i < numElements; ++i)
73     attributes.emplace_back(unwrap(elements[i].name),
74                             unwrap(elements[i].attribute));
75   return wrap(DictionaryAttr::get(unwrap(ctx), attributes));
76 }
77 
78 intptr_t mlirDictionaryAttrGetNumElements(MlirAttribute attr) {
79   return static_cast<intptr_t>(unwrap(attr).cast<DictionaryAttr>().size());
80 }
81 
82 MlirNamedAttribute mlirDictionaryAttrGetElement(MlirAttribute attr,
83                                                 intptr_t pos) {
84   NamedAttribute attribute =
85       unwrap(attr).cast<DictionaryAttr>().getValue()[pos];
86   return {wrap(attribute.first), wrap(attribute.second)};
87 }
88 
89 MlirAttribute mlirDictionaryAttrGetElementByName(MlirAttribute attr,
90                                                  MlirStringRef name) {
91   return wrap(unwrap(attr).cast<DictionaryAttr>().get(unwrap(name)));
92 }
93 
94 //===----------------------------------------------------------------------===//
95 // Floating point attribute.
96 //===----------------------------------------------------------------------===//
97 
98 bool mlirAttributeIsAFloat(MlirAttribute attr) {
99   return unwrap(attr).isa<FloatAttr>();
100 }
101 
102 MlirAttribute mlirFloatAttrDoubleGet(MlirContext ctx, MlirType type,
103                                      double value) {
104   return wrap(FloatAttr::get(unwrap(type), value));
105 }
106 
107 MlirAttribute mlirFloatAttrDoubleGetChecked(MlirLocation loc, MlirType type,
108                                             double value) {
109   return wrap(FloatAttr::getChecked(unwrap(loc), unwrap(type), value));
110 }
111 
112 double mlirFloatAttrGetValueDouble(MlirAttribute attr) {
113   return unwrap(attr).cast<FloatAttr>().getValueAsDouble();
114 }
115 
116 //===----------------------------------------------------------------------===//
117 // Integer attribute.
118 //===----------------------------------------------------------------------===//
119 
120 bool mlirAttributeIsAInteger(MlirAttribute attr) {
121   return unwrap(attr).isa<IntegerAttr>();
122 }
123 
124 MlirAttribute mlirIntegerAttrGet(MlirType type, int64_t value) {
125   return wrap(IntegerAttr::get(unwrap(type), value));
126 }
127 
128 int64_t mlirIntegerAttrGetValueInt(MlirAttribute attr) {
129   return unwrap(attr).cast<IntegerAttr>().getInt();
130 }
131 
132 //===----------------------------------------------------------------------===//
133 // Bool attribute.
134 //===----------------------------------------------------------------------===//
135 
136 bool mlirAttributeIsABool(MlirAttribute attr) {
137   return unwrap(attr).isa<BoolAttr>();
138 }
139 
140 MlirAttribute mlirBoolAttrGet(MlirContext ctx, int value) {
141   return wrap(BoolAttr::get(unwrap(ctx), value));
142 }
143 
144 bool mlirBoolAttrGetValue(MlirAttribute attr) {
145   return unwrap(attr).cast<BoolAttr>().getValue();
146 }
147 
148 //===----------------------------------------------------------------------===//
149 // Integer set attribute.
150 //===----------------------------------------------------------------------===//
151 
152 bool mlirAttributeIsAIntegerSet(MlirAttribute attr) {
153   return unwrap(attr).isa<IntegerSetAttr>();
154 }
155 
156 //===----------------------------------------------------------------------===//
157 // Opaque attribute.
158 //===----------------------------------------------------------------------===//
159 
160 bool mlirAttributeIsAOpaque(MlirAttribute attr) {
161   return unwrap(attr).isa<OpaqueAttr>();
162 }
163 
164 MlirAttribute mlirOpaqueAttrGet(MlirContext ctx, MlirStringRef dialectNamespace,
165                                 intptr_t dataLength, const char *data,
166                                 MlirType type) {
167   return wrap(
168       OpaqueAttr::get(Identifier::get(unwrap(dialectNamespace), unwrap(ctx)),
169                       StringRef(data, dataLength), unwrap(type)));
170 }
171 
172 MlirStringRef mlirOpaqueAttrGetDialectNamespace(MlirAttribute attr) {
173   return wrap(unwrap(attr).cast<OpaqueAttr>().getDialectNamespace().strref());
174 }
175 
176 MlirStringRef mlirOpaqueAttrGetData(MlirAttribute attr) {
177   return wrap(unwrap(attr).cast<OpaqueAttr>().getAttrData());
178 }
179 
180 //===----------------------------------------------------------------------===//
181 // String attribute.
182 //===----------------------------------------------------------------------===//
183 
184 bool mlirAttributeIsAString(MlirAttribute attr) {
185   return unwrap(attr).isa<StringAttr>();
186 }
187 
188 MlirAttribute mlirStringAttrGet(MlirContext ctx, MlirStringRef str) {
189   return wrap(StringAttr::get(unwrap(ctx), unwrap(str)));
190 }
191 
192 MlirAttribute mlirStringAttrTypedGet(MlirType type, MlirStringRef str) {
193   return wrap(StringAttr::get(unwrap(str), unwrap(type)));
194 }
195 
196 MlirStringRef mlirStringAttrGetValue(MlirAttribute attr) {
197   return wrap(unwrap(attr).cast<StringAttr>().getValue());
198 }
199 
200 //===----------------------------------------------------------------------===//
201 // SymbolRef attribute.
202 //===----------------------------------------------------------------------===//
203 
204 bool mlirAttributeIsASymbolRef(MlirAttribute attr) {
205   return unwrap(attr).isa<SymbolRefAttr>();
206 }
207 
208 MlirAttribute mlirSymbolRefAttrGet(MlirContext ctx, MlirStringRef symbol,
209                                    intptr_t numReferences,
210                                    MlirAttribute const *references) {
211   SmallVector<FlatSymbolRefAttr, 4> refs;
212   refs.reserve(numReferences);
213   for (intptr_t i = 0; i < numReferences; ++i)
214     refs.push_back(unwrap(references[i]).cast<FlatSymbolRefAttr>());
215   auto symbolAttr = StringAttr::get(unwrap(ctx), unwrap(symbol));
216   return wrap(SymbolRefAttr::get(symbolAttr, refs));
217 }
218 
219 MlirStringRef mlirSymbolRefAttrGetRootReference(MlirAttribute attr) {
220   return wrap(unwrap(attr).cast<SymbolRefAttr>().getRootReference().getValue());
221 }
222 
223 MlirStringRef mlirSymbolRefAttrGetLeafReference(MlirAttribute attr) {
224   return wrap(unwrap(attr).cast<SymbolRefAttr>().getLeafReference().getValue());
225 }
226 
227 intptr_t mlirSymbolRefAttrGetNumNestedReferences(MlirAttribute attr) {
228   return static_cast<intptr_t>(
229       unwrap(attr).cast<SymbolRefAttr>().getNestedReferences().size());
230 }
231 
232 MlirAttribute mlirSymbolRefAttrGetNestedReference(MlirAttribute attr,
233                                                   intptr_t pos) {
234   return wrap(unwrap(attr).cast<SymbolRefAttr>().getNestedReferences()[pos]);
235 }
236 
237 //===----------------------------------------------------------------------===//
238 // Flat SymbolRef attribute.
239 //===----------------------------------------------------------------------===//
240 
241 bool mlirAttributeIsAFlatSymbolRef(MlirAttribute attr) {
242   return unwrap(attr).isa<FlatSymbolRefAttr>();
243 }
244 
245 MlirAttribute mlirFlatSymbolRefAttrGet(MlirContext ctx, MlirStringRef symbol) {
246   return wrap(FlatSymbolRefAttr::get(unwrap(ctx), unwrap(symbol)));
247 }
248 
249 MlirStringRef mlirFlatSymbolRefAttrGetValue(MlirAttribute attr) {
250   return wrap(unwrap(attr).cast<FlatSymbolRefAttr>().getValue());
251 }
252 
253 //===----------------------------------------------------------------------===//
254 // Type attribute.
255 //===----------------------------------------------------------------------===//
256 
257 bool mlirAttributeIsAType(MlirAttribute attr) {
258   return unwrap(attr).isa<TypeAttr>();
259 }
260 
261 MlirAttribute mlirTypeAttrGet(MlirType type) {
262   return wrap(TypeAttr::get(unwrap(type)));
263 }
264 
265 MlirType mlirTypeAttrGetValue(MlirAttribute attr) {
266   return wrap(unwrap(attr).cast<TypeAttr>().getValue());
267 }
268 
269 //===----------------------------------------------------------------------===//
270 // Unit attribute.
271 //===----------------------------------------------------------------------===//
272 
273 bool mlirAttributeIsAUnit(MlirAttribute attr) {
274   return unwrap(attr).isa<UnitAttr>();
275 }
276 
277 MlirAttribute mlirUnitAttrGet(MlirContext ctx) {
278   return wrap(UnitAttr::get(unwrap(ctx)));
279 }
280 
281 //===----------------------------------------------------------------------===//
282 // Elements attributes.
283 //===----------------------------------------------------------------------===//
284 
285 bool mlirAttributeIsAElements(MlirAttribute attr) {
286   return unwrap(attr).isa<ElementsAttr>();
287 }
288 
289 MlirAttribute mlirElementsAttrGetValue(MlirAttribute attr, intptr_t rank,
290                                        uint64_t *idxs) {
291   return wrap(unwrap(attr).cast<ElementsAttr>().getValue(
292       llvm::makeArrayRef(idxs, rank)));
293 }
294 
295 bool mlirElementsAttrIsValidIndex(MlirAttribute attr, intptr_t rank,
296                                   uint64_t *idxs) {
297   return unwrap(attr).cast<ElementsAttr>().isValidIndex(
298       llvm::makeArrayRef(idxs, rank));
299 }
300 
301 int64_t mlirElementsAttrGetNumElements(MlirAttribute attr) {
302   return unwrap(attr).cast<ElementsAttr>().getNumElements();
303 }
304 
305 //===----------------------------------------------------------------------===//
306 // Dense elements attribute.
307 //===----------------------------------------------------------------------===//
308 
309 //===----------------------------------------------------------------------===//
310 // IsA support.
311 
312 bool mlirAttributeIsADenseElements(MlirAttribute attr) {
313   return unwrap(attr).isa<DenseElementsAttr>();
314 }
315 bool mlirAttributeIsADenseIntElements(MlirAttribute attr) {
316   return unwrap(attr).isa<DenseIntElementsAttr>();
317 }
318 bool mlirAttributeIsADenseFPElements(MlirAttribute attr) {
319   return unwrap(attr).isa<DenseFPElementsAttr>();
320 }
321 
322 //===----------------------------------------------------------------------===//
323 // Constructors.
324 
325 MlirAttribute mlirDenseElementsAttrGet(MlirType shapedType,
326                                        intptr_t numElements,
327                                        MlirAttribute const *elements) {
328   SmallVector<Attribute, 8> attributes;
329   return wrap(
330       DenseElementsAttr::get(unwrap(shapedType).cast<ShapedType>(),
331                              unwrapList(numElements, elements, attributes)));
332 }
333 
334 MlirAttribute mlirDenseElementsAttrSplatGet(MlirType shapedType,
335                                             MlirAttribute element) {
336   return wrap(DenseElementsAttr::get(unwrap(shapedType).cast<ShapedType>(),
337                                      unwrap(element)));
338 }
339 MlirAttribute mlirDenseElementsAttrBoolSplatGet(MlirType shapedType,
340                                                 bool element) {
341   return wrap(
342       DenseElementsAttr::get(unwrap(shapedType).cast<ShapedType>(), element));
343 }
344 MlirAttribute mlirDenseElementsAttrUInt8SplatGet(MlirType shapedType,
345                                                  uint8_t element) {
346   return wrap(
347       DenseElementsAttr::get(unwrap(shapedType).cast<ShapedType>(), element));
348 }
349 MlirAttribute mlirDenseElementsAttrInt8SplatGet(MlirType shapedType,
350                                                 int8_t element) {
351   return wrap(
352       DenseElementsAttr::get(unwrap(shapedType).cast<ShapedType>(), element));
353 }
354 MlirAttribute mlirDenseElementsAttrUInt32SplatGet(MlirType shapedType,
355                                                   uint32_t element) {
356   return wrap(
357       DenseElementsAttr::get(unwrap(shapedType).cast<ShapedType>(), element));
358 }
359 MlirAttribute mlirDenseElementsAttrInt32SplatGet(MlirType shapedType,
360                                                  int32_t element) {
361   return wrap(
362       DenseElementsAttr::get(unwrap(shapedType).cast<ShapedType>(), element));
363 }
364 MlirAttribute mlirDenseElementsAttrUInt64SplatGet(MlirType shapedType,
365                                                   uint64_t element) {
366   return wrap(
367       DenseElementsAttr::get(unwrap(shapedType).cast<ShapedType>(), element));
368 }
369 MlirAttribute mlirDenseElementsAttrInt64SplatGet(MlirType shapedType,
370                                                  int64_t element) {
371   return wrap(
372       DenseElementsAttr::get(unwrap(shapedType).cast<ShapedType>(), element));
373 }
374 MlirAttribute mlirDenseElementsAttrFloatSplatGet(MlirType shapedType,
375                                                  float element) {
376   return wrap(
377       DenseElementsAttr::get(unwrap(shapedType).cast<ShapedType>(), element));
378 }
379 MlirAttribute mlirDenseElementsAttrDoubleSplatGet(MlirType shapedType,
380                                                   double element) {
381   return wrap(
382       DenseElementsAttr::get(unwrap(shapedType).cast<ShapedType>(), element));
383 }
384 
385 MlirAttribute mlirDenseElementsAttrBoolGet(MlirType shapedType,
386                                            intptr_t numElements,
387                                            const int *elements) {
388   SmallVector<bool, 8> values(elements, elements + numElements);
389   return wrap(
390       DenseElementsAttr::get(unwrap(shapedType).cast<ShapedType>(), values));
391 }
392 
393 /// Creates a dense attribute with elements of the type deduced by templates.
394 template <typename T>
395 static MlirAttribute getDenseAttribute(MlirType shapedType,
396                                        intptr_t numElements,
397                                        const T *elements) {
398   return wrap(
399       DenseElementsAttr::get(unwrap(shapedType).cast<ShapedType>(),
400                              llvm::makeArrayRef(elements, numElements)));
401 }
402 
403 MlirAttribute mlirDenseElementsAttrUInt8Get(MlirType shapedType,
404                                             intptr_t numElements,
405                                             const uint8_t *elements) {
406   return getDenseAttribute(shapedType, numElements, elements);
407 }
408 MlirAttribute mlirDenseElementsAttrInt8Get(MlirType shapedType,
409                                            intptr_t numElements,
410                                            const int8_t *elements) {
411   return getDenseAttribute(shapedType, numElements, elements);
412 }
413 MlirAttribute mlirDenseElementsAttrUInt32Get(MlirType shapedType,
414                                              intptr_t numElements,
415                                              const uint32_t *elements) {
416   return getDenseAttribute(shapedType, numElements, elements);
417 }
418 MlirAttribute mlirDenseElementsAttrInt32Get(MlirType shapedType,
419                                             intptr_t numElements,
420                                             const int32_t *elements) {
421   return getDenseAttribute(shapedType, numElements, elements);
422 }
423 MlirAttribute mlirDenseElementsAttrUInt64Get(MlirType shapedType,
424                                              intptr_t numElements,
425                                              const uint64_t *elements) {
426   return getDenseAttribute(shapedType, numElements, elements);
427 }
428 MlirAttribute mlirDenseElementsAttrInt64Get(MlirType shapedType,
429                                             intptr_t numElements,
430                                             const int64_t *elements) {
431   return getDenseAttribute(shapedType, numElements, elements);
432 }
433 MlirAttribute mlirDenseElementsAttrFloatGet(MlirType shapedType,
434                                             intptr_t numElements,
435                                             const float *elements) {
436   return getDenseAttribute(shapedType, numElements, elements);
437 }
438 MlirAttribute mlirDenseElementsAttrDoubleGet(MlirType shapedType,
439                                              intptr_t numElements,
440                                              const double *elements) {
441   return getDenseAttribute(shapedType, numElements, elements);
442 }
443 
444 MlirAttribute mlirDenseElementsAttrStringGet(MlirType shapedType,
445                                              intptr_t numElements,
446                                              MlirStringRef *strs) {
447   SmallVector<StringRef, 8> values;
448   values.reserve(numElements);
449   for (intptr_t i = 0; i < numElements; ++i)
450     values.push_back(unwrap(strs[i]));
451 
452   return wrap(
453       DenseElementsAttr::get(unwrap(shapedType).cast<ShapedType>(), values));
454 }
455 
456 MlirAttribute mlirDenseElementsAttrReshapeGet(MlirAttribute attr,
457                                               MlirType shapedType) {
458   return wrap(unwrap(attr).cast<DenseElementsAttr>().reshape(
459       unwrap(shapedType).cast<ShapedType>()));
460 }
461 
462 //===----------------------------------------------------------------------===//
463 // Splat accessors.
464 
465 bool mlirDenseElementsAttrIsSplat(MlirAttribute attr) {
466   return unwrap(attr).cast<DenseElementsAttr>().isSplat();
467 }
468 
469 MlirAttribute mlirDenseElementsAttrGetSplatValue(MlirAttribute attr) {
470   return wrap(unwrap(attr).cast<DenseElementsAttr>().getSplatValue());
471 }
472 int mlirDenseElementsAttrGetBoolSplatValue(MlirAttribute attr) {
473   return unwrap(attr).cast<DenseElementsAttr>().getSplatValue<bool>();
474 }
475 int8_t mlirDenseElementsAttrGetInt8SplatValue(MlirAttribute attr) {
476   return unwrap(attr).cast<DenseElementsAttr>().getSplatValue<int8_t>();
477 }
478 uint8_t mlirDenseElementsAttrGetUInt8SplatValue(MlirAttribute attr) {
479   return unwrap(attr).cast<DenseElementsAttr>().getSplatValue<uint8_t>();
480 }
481 int32_t mlirDenseElementsAttrGetInt32SplatValue(MlirAttribute attr) {
482   return unwrap(attr).cast<DenseElementsAttr>().getSplatValue<int32_t>();
483 }
484 uint32_t mlirDenseElementsAttrGetUInt32SplatValue(MlirAttribute attr) {
485   return unwrap(attr).cast<DenseElementsAttr>().getSplatValue<uint32_t>();
486 }
487 int64_t mlirDenseElementsAttrGetInt64SplatValue(MlirAttribute attr) {
488   return unwrap(attr).cast<DenseElementsAttr>().getSplatValue<int64_t>();
489 }
490 uint64_t mlirDenseElementsAttrGetUInt64SplatValue(MlirAttribute attr) {
491   return unwrap(attr).cast<DenseElementsAttr>().getSplatValue<uint64_t>();
492 }
493 float mlirDenseElementsAttrGetFloatSplatValue(MlirAttribute attr) {
494   return unwrap(attr).cast<DenseElementsAttr>().getSplatValue<float>();
495 }
496 double mlirDenseElementsAttrGetDoubleSplatValue(MlirAttribute attr) {
497   return unwrap(attr).cast<DenseElementsAttr>().getSplatValue<double>();
498 }
499 MlirStringRef mlirDenseElementsAttrGetStringSplatValue(MlirAttribute attr) {
500   return wrap(
501       unwrap(attr).cast<DenseElementsAttr>().getSplatValue<StringRef>());
502 }
503 
504 //===----------------------------------------------------------------------===//
505 // Indexed accessors.
506 
507 bool mlirDenseElementsAttrGetBoolValue(MlirAttribute attr, intptr_t pos) {
508   return *(unwrap(attr).cast<DenseElementsAttr>().getValues<bool>().begin() +
509            pos);
510 }
511 int8_t mlirDenseElementsAttrGetInt8Value(MlirAttribute attr, intptr_t pos) {
512   return *(unwrap(attr).cast<DenseElementsAttr>().getValues<int8_t>().begin() +
513            pos);
514 }
515 uint8_t mlirDenseElementsAttrGetUInt8Value(MlirAttribute attr, intptr_t pos) {
516   return *(unwrap(attr).cast<DenseElementsAttr>().getValues<uint8_t>().begin() +
517            pos);
518 }
519 int32_t mlirDenseElementsAttrGetInt32Value(MlirAttribute attr, intptr_t pos) {
520   return *(unwrap(attr).cast<DenseElementsAttr>().getValues<int32_t>().begin() +
521            pos);
522 }
523 uint32_t mlirDenseElementsAttrGetUInt32Value(MlirAttribute attr, intptr_t pos) {
524   return *(
525       unwrap(attr).cast<DenseElementsAttr>().getValues<uint32_t>().begin() +
526       pos);
527 }
528 int64_t mlirDenseElementsAttrGetInt64Value(MlirAttribute attr, intptr_t pos) {
529   return *(unwrap(attr).cast<DenseElementsAttr>().getValues<int64_t>().begin() +
530            pos);
531 }
532 uint64_t mlirDenseElementsAttrGetUInt64Value(MlirAttribute attr, intptr_t pos) {
533   return *(
534       unwrap(attr).cast<DenseElementsAttr>().getValues<uint64_t>().begin() +
535       pos);
536 }
537 float mlirDenseElementsAttrGetFloatValue(MlirAttribute attr, intptr_t pos) {
538   return *(unwrap(attr).cast<DenseElementsAttr>().getValues<float>().begin() +
539            pos);
540 }
541 double mlirDenseElementsAttrGetDoubleValue(MlirAttribute attr, intptr_t pos) {
542   return *(unwrap(attr).cast<DenseElementsAttr>().getValues<double>().begin() +
543            pos);
544 }
545 MlirStringRef mlirDenseElementsAttrGetStringValue(MlirAttribute attr,
546                                                   intptr_t pos) {
547   return wrap(
548       *(unwrap(attr).cast<DenseElementsAttr>().getValues<StringRef>().begin() +
549         pos));
550 }
551 
552 //===----------------------------------------------------------------------===//
553 // Raw data accessors.
554 
555 const void *mlirDenseElementsAttrGetRawData(MlirAttribute attr) {
556   return static_cast<const void *>(
557       unwrap(attr).cast<DenseElementsAttr>().getRawData().data());
558 }
559 
560 //===----------------------------------------------------------------------===//
561 // Opaque elements attribute.
562 //===----------------------------------------------------------------------===//
563 
564 bool mlirAttributeIsAOpaqueElements(MlirAttribute attr) {
565   return unwrap(attr).isa<OpaqueElementsAttr>();
566 }
567 
568 //===----------------------------------------------------------------------===//
569 // Sparse elements attribute.
570 //===----------------------------------------------------------------------===//
571 
572 bool mlirAttributeIsASparseElements(MlirAttribute attr) {
573   return unwrap(attr).isa<SparseElementsAttr>();
574 }
575 
576 MlirAttribute mlirSparseElementsAttribute(MlirType shapedType,
577                                           MlirAttribute denseIndices,
578                                           MlirAttribute denseValues) {
579   return wrap(
580       SparseElementsAttr::get(unwrap(shapedType).cast<ShapedType>(),
581                               unwrap(denseIndices).cast<DenseElementsAttr>(),
582                               unwrap(denseValues).cast<DenseElementsAttr>()));
583 }
584 
585 MlirAttribute mlirSparseElementsAttrGetIndices(MlirAttribute attr) {
586   return wrap(unwrap(attr).cast<SparseElementsAttr>().getIndices());
587 }
588 
589 MlirAttribute mlirSparseElementsAttrGetValues(MlirAttribute attr) {
590   return wrap(unwrap(attr).cast<SparseElementsAttr>().getValues());
591 }
592