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   return wrap(SymbolRefAttr::get(unwrap(ctx), unwrap(symbol), refs));
216 }
217 
218 MlirStringRef mlirSymbolRefAttrGetRootReference(MlirAttribute attr) {
219   return wrap(unwrap(attr).cast<SymbolRefAttr>().getRootReference());
220 }
221 
222 MlirStringRef mlirSymbolRefAttrGetLeafReference(MlirAttribute attr) {
223   return wrap(unwrap(attr).cast<SymbolRefAttr>().getLeafReference());
224 }
225 
226 intptr_t mlirSymbolRefAttrGetNumNestedReferences(MlirAttribute attr) {
227   return static_cast<intptr_t>(
228       unwrap(attr).cast<SymbolRefAttr>().getNestedReferences().size());
229 }
230 
231 MlirAttribute mlirSymbolRefAttrGetNestedReference(MlirAttribute attr,
232                                                   intptr_t pos) {
233   return wrap(unwrap(attr).cast<SymbolRefAttr>().getNestedReferences()[pos]);
234 }
235 
236 //===----------------------------------------------------------------------===//
237 // Flat SymbolRef attribute.
238 //===----------------------------------------------------------------------===//
239 
240 bool mlirAttributeIsAFlatSymbolRef(MlirAttribute attr) {
241   return unwrap(attr).isa<FlatSymbolRefAttr>();
242 }
243 
244 MlirAttribute mlirFlatSymbolRefAttrGet(MlirContext ctx, MlirStringRef symbol) {
245   return wrap(FlatSymbolRefAttr::get(unwrap(ctx), unwrap(symbol)));
246 }
247 
248 MlirStringRef mlirFlatSymbolRefAttrGetValue(MlirAttribute attr) {
249   return wrap(unwrap(attr).cast<FlatSymbolRefAttr>().getValue());
250 }
251 
252 //===----------------------------------------------------------------------===//
253 // Type attribute.
254 //===----------------------------------------------------------------------===//
255 
256 bool mlirAttributeIsAType(MlirAttribute attr) {
257   return unwrap(attr).isa<TypeAttr>();
258 }
259 
260 MlirAttribute mlirTypeAttrGet(MlirType type) {
261   return wrap(TypeAttr::get(unwrap(type)));
262 }
263 
264 MlirType mlirTypeAttrGetValue(MlirAttribute attr) {
265   return wrap(unwrap(attr).cast<TypeAttr>().getValue());
266 }
267 
268 //===----------------------------------------------------------------------===//
269 // Unit attribute.
270 //===----------------------------------------------------------------------===//
271 
272 bool mlirAttributeIsAUnit(MlirAttribute attr) {
273   return unwrap(attr).isa<UnitAttr>();
274 }
275 
276 MlirAttribute mlirUnitAttrGet(MlirContext ctx) {
277   return wrap(UnitAttr::get(unwrap(ctx)));
278 }
279 
280 //===----------------------------------------------------------------------===//
281 // Elements attributes.
282 //===----------------------------------------------------------------------===//
283 
284 bool mlirAttributeIsAElements(MlirAttribute attr) {
285   return unwrap(attr).isa<ElementsAttr>();
286 }
287 
288 MlirAttribute mlirElementsAttrGetValue(MlirAttribute attr, intptr_t rank,
289                                        uint64_t *idxs) {
290   return wrap(unwrap(attr).cast<ElementsAttr>().getValue(
291       llvm::makeArrayRef(idxs, rank)));
292 }
293 
294 bool mlirElementsAttrIsValidIndex(MlirAttribute attr, intptr_t rank,
295                                   uint64_t *idxs) {
296   return unwrap(attr).cast<ElementsAttr>().isValidIndex(
297       llvm::makeArrayRef(idxs, rank));
298 }
299 
300 int64_t mlirElementsAttrGetNumElements(MlirAttribute attr) {
301   return unwrap(attr).cast<ElementsAttr>().getNumElements();
302 }
303 
304 //===----------------------------------------------------------------------===//
305 // Dense elements attribute.
306 //===----------------------------------------------------------------------===//
307 
308 //===----------------------------------------------------------------------===//
309 // IsA support.
310 
311 bool mlirAttributeIsADenseElements(MlirAttribute attr) {
312   return unwrap(attr).isa<DenseElementsAttr>();
313 }
314 bool mlirAttributeIsADenseIntElements(MlirAttribute attr) {
315   return unwrap(attr).isa<DenseIntElementsAttr>();
316 }
317 bool mlirAttributeIsADenseFPElements(MlirAttribute attr) {
318   return unwrap(attr).isa<DenseFPElementsAttr>();
319 }
320 
321 //===----------------------------------------------------------------------===//
322 // Constructors.
323 
324 MlirAttribute mlirDenseElementsAttrGet(MlirType shapedType,
325                                        intptr_t numElements,
326                                        MlirAttribute const *elements) {
327   SmallVector<Attribute, 8> attributes;
328   return wrap(
329       DenseElementsAttr::get(unwrap(shapedType).cast<ShapedType>(),
330                              unwrapList(numElements, elements, attributes)));
331 }
332 
333 MlirAttribute mlirDenseElementsAttrSplatGet(MlirType shapedType,
334                                             MlirAttribute element) {
335   return wrap(DenseElementsAttr::get(unwrap(shapedType).cast<ShapedType>(),
336                                      unwrap(element)));
337 }
338 MlirAttribute mlirDenseElementsAttrBoolSplatGet(MlirType shapedType,
339                                                 bool element) {
340   return wrap(
341       DenseElementsAttr::get(unwrap(shapedType).cast<ShapedType>(), element));
342 }
343 MlirAttribute mlirDenseElementsAttrUInt8SplatGet(MlirType shapedType,
344                                                  uint8_t element) {
345   return wrap(
346       DenseElementsAttr::get(unwrap(shapedType).cast<ShapedType>(), element));
347 }
348 MlirAttribute mlirDenseElementsAttrInt8SplatGet(MlirType shapedType,
349                                                 int8_t element) {
350   return wrap(
351       DenseElementsAttr::get(unwrap(shapedType).cast<ShapedType>(), element));
352 }
353 MlirAttribute mlirDenseElementsAttrUInt32SplatGet(MlirType shapedType,
354                                                   uint32_t element) {
355   return wrap(
356       DenseElementsAttr::get(unwrap(shapedType).cast<ShapedType>(), element));
357 }
358 MlirAttribute mlirDenseElementsAttrInt32SplatGet(MlirType shapedType,
359                                                  int32_t element) {
360   return wrap(
361       DenseElementsAttr::get(unwrap(shapedType).cast<ShapedType>(), element));
362 }
363 MlirAttribute mlirDenseElementsAttrUInt64SplatGet(MlirType shapedType,
364                                                   uint64_t element) {
365   return wrap(
366       DenseElementsAttr::get(unwrap(shapedType).cast<ShapedType>(), element));
367 }
368 MlirAttribute mlirDenseElementsAttrInt64SplatGet(MlirType shapedType,
369                                                  int64_t element) {
370   return wrap(
371       DenseElementsAttr::get(unwrap(shapedType).cast<ShapedType>(), element));
372 }
373 MlirAttribute mlirDenseElementsAttrFloatSplatGet(MlirType shapedType,
374                                                  float element) {
375   return wrap(
376       DenseElementsAttr::get(unwrap(shapedType).cast<ShapedType>(), element));
377 }
378 MlirAttribute mlirDenseElementsAttrDoubleSplatGet(MlirType shapedType,
379                                                   double element) {
380   return wrap(
381       DenseElementsAttr::get(unwrap(shapedType).cast<ShapedType>(), element));
382 }
383 
384 MlirAttribute mlirDenseElementsAttrBoolGet(MlirType shapedType,
385                                            intptr_t numElements,
386                                            const int *elements) {
387   SmallVector<bool, 8> values(elements, elements + numElements);
388   return wrap(
389       DenseElementsAttr::get(unwrap(shapedType).cast<ShapedType>(), values));
390 }
391 
392 /// Creates a dense attribute with elements of the type deduced by templates.
393 template <typename T>
394 static MlirAttribute getDenseAttribute(MlirType shapedType,
395                                        intptr_t numElements,
396                                        const T *elements) {
397   return wrap(
398       DenseElementsAttr::get(unwrap(shapedType).cast<ShapedType>(),
399                              llvm::makeArrayRef(elements, numElements)));
400 }
401 
402 MlirAttribute mlirDenseElementsAttrUInt8Get(MlirType shapedType,
403                                             intptr_t numElements,
404                                             const uint8_t *elements) {
405   return getDenseAttribute(shapedType, numElements, elements);
406 }
407 MlirAttribute mlirDenseElementsAttrInt8Get(MlirType shapedType,
408                                            intptr_t numElements,
409                                            const int8_t *elements) {
410   return getDenseAttribute(shapedType, numElements, elements);
411 }
412 MlirAttribute mlirDenseElementsAttrUInt32Get(MlirType shapedType,
413                                              intptr_t numElements,
414                                              const uint32_t *elements) {
415   return getDenseAttribute(shapedType, numElements, elements);
416 }
417 MlirAttribute mlirDenseElementsAttrInt32Get(MlirType shapedType,
418                                             intptr_t numElements,
419                                             const int32_t *elements) {
420   return getDenseAttribute(shapedType, numElements, elements);
421 }
422 MlirAttribute mlirDenseElementsAttrUInt64Get(MlirType shapedType,
423                                              intptr_t numElements,
424                                              const uint64_t *elements) {
425   return getDenseAttribute(shapedType, numElements, elements);
426 }
427 MlirAttribute mlirDenseElementsAttrInt64Get(MlirType shapedType,
428                                             intptr_t numElements,
429                                             const int64_t *elements) {
430   return getDenseAttribute(shapedType, numElements, elements);
431 }
432 MlirAttribute mlirDenseElementsAttrFloatGet(MlirType shapedType,
433                                             intptr_t numElements,
434                                             const float *elements) {
435   return getDenseAttribute(shapedType, numElements, elements);
436 }
437 MlirAttribute mlirDenseElementsAttrDoubleGet(MlirType shapedType,
438                                              intptr_t numElements,
439                                              const double *elements) {
440   return getDenseAttribute(shapedType, numElements, elements);
441 }
442 
443 MlirAttribute mlirDenseElementsAttrStringGet(MlirType shapedType,
444                                              intptr_t numElements,
445                                              MlirStringRef *strs) {
446   SmallVector<StringRef, 8> values;
447   values.reserve(numElements);
448   for (intptr_t i = 0; i < numElements; ++i)
449     values.push_back(unwrap(strs[i]));
450 
451   return wrap(
452       DenseElementsAttr::get(unwrap(shapedType).cast<ShapedType>(), values));
453 }
454 
455 MlirAttribute mlirDenseElementsAttrReshapeGet(MlirAttribute attr,
456                                               MlirType shapedType) {
457   return wrap(unwrap(attr).cast<DenseElementsAttr>().reshape(
458       unwrap(shapedType).cast<ShapedType>()));
459 }
460 
461 //===----------------------------------------------------------------------===//
462 // Splat accessors.
463 
464 bool mlirDenseElementsAttrIsSplat(MlirAttribute attr) {
465   return unwrap(attr).cast<DenseElementsAttr>().isSplat();
466 }
467 
468 MlirAttribute mlirDenseElementsAttrGetSplatValue(MlirAttribute attr) {
469   return wrap(unwrap(attr).cast<DenseElementsAttr>().getSplatValue());
470 }
471 int mlirDenseElementsAttrGetBoolSplatValue(MlirAttribute attr) {
472   return unwrap(attr).cast<DenseElementsAttr>().getSplatValue<bool>();
473 }
474 int8_t mlirDenseElementsAttrGetInt8SplatValue(MlirAttribute attr) {
475   return unwrap(attr).cast<DenseElementsAttr>().getSplatValue<int8_t>();
476 }
477 uint8_t mlirDenseElementsAttrGetUInt8SplatValue(MlirAttribute attr) {
478   return unwrap(attr).cast<DenseElementsAttr>().getSplatValue<uint8_t>();
479 }
480 int32_t mlirDenseElementsAttrGetInt32SplatValue(MlirAttribute attr) {
481   return unwrap(attr).cast<DenseElementsAttr>().getSplatValue<int32_t>();
482 }
483 uint32_t mlirDenseElementsAttrGetUInt32SplatValue(MlirAttribute attr) {
484   return unwrap(attr).cast<DenseElementsAttr>().getSplatValue<uint32_t>();
485 }
486 int64_t mlirDenseElementsAttrGetInt64SplatValue(MlirAttribute attr) {
487   return unwrap(attr).cast<DenseElementsAttr>().getSplatValue<int64_t>();
488 }
489 uint64_t mlirDenseElementsAttrGetUInt64SplatValue(MlirAttribute attr) {
490   return unwrap(attr).cast<DenseElementsAttr>().getSplatValue<uint64_t>();
491 }
492 float mlirDenseElementsAttrGetFloatSplatValue(MlirAttribute attr) {
493   return unwrap(attr).cast<DenseElementsAttr>().getSplatValue<float>();
494 }
495 double mlirDenseElementsAttrGetDoubleSplatValue(MlirAttribute attr) {
496   return unwrap(attr).cast<DenseElementsAttr>().getSplatValue<double>();
497 }
498 MlirStringRef mlirDenseElementsAttrGetStringSplatValue(MlirAttribute attr) {
499   return wrap(
500       unwrap(attr).cast<DenseElementsAttr>().getSplatValue<StringRef>());
501 }
502 
503 //===----------------------------------------------------------------------===//
504 // Indexed accessors.
505 
506 bool mlirDenseElementsAttrGetBoolValue(MlirAttribute attr, intptr_t pos) {
507   return *(unwrap(attr).cast<DenseElementsAttr>().getValues<bool>().begin() +
508            pos);
509 }
510 int8_t mlirDenseElementsAttrGetInt8Value(MlirAttribute attr, intptr_t pos) {
511   return *(unwrap(attr).cast<DenseElementsAttr>().getValues<int8_t>().begin() +
512            pos);
513 }
514 uint8_t mlirDenseElementsAttrGetUInt8Value(MlirAttribute attr, intptr_t pos) {
515   return *(unwrap(attr).cast<DenseElementsAttr>().getValues<uint8_t>().begin() +
516            pos);
517 }
518 int32_t mlirDenseElementsAttrGetInt32Value(MlirAttribute attr, intptr_t pos) {
519   return *(unwrap(attr).cast<DenseElementsAttr>().getValues<int32_t>().begin() +
520            pos);
521 }
522 uint32_t mlirDenseElementsAttrGetUInt32Value(MlirAttribute attr, intptr_t pos) {
523   return *(
524       unwrap(attr).cast<DenseElementsAttr>().getValues<uint32_t>().begin() +
525       pos);
526 }
527 int64_t mlirDenseElementsAttrGetInt64Value(MlirAttribute attr, intptr_t pos) {
528   return *(unwrap(attr).cast<DenseElementsAttr>().getValues<int64_t>().begin() +
529            pos);
530 }
531 uint64_t mlirDenseElementsAttrGetUInt64Value(MlirAttribute attr, intptr_t pos) {
532   return *(
533       unwrap(attr).cast<DenseElementsAttr>().getValues<uint64_t>().begin() +
534       pos);
535 }
536 float mlirDenseElementsAttrGetFloatValue(MlirAttribute attr, intptr_t pos) {
537   return *(unwrap(attr).cast<DenseElementsAttr>().getValues<float>().begin() +
538            pos);
539 }
540 double mlirDenseElementsAttrGetDoubleValue(MlirAttribute attr, intptr_t pos) {
541   return *(unwrap(attr).cast<DenseElementsAttr>().getValues<double>().begin() +
542            pos);
543 }
544 MlirStringRef mlirDenseElementsAttrGetStringValue(MlirAttribute attr,
545                                                   intptr_t pos) {
546   return wrap(
547       *(unwrap(attr).cast<DenseElementsAttr>().getValues<StringRef>().begin() +
548         pos));
549 }
550 
551 //===----------------------------------------------------------------------===//
552 // Raw data accessors.
553 
554 const void *mlirDenseElementsAttrGetRawData(MlirAttribute attr) {
555   return static_cast<const void *>(
556       unwrap(attr).cast<DenseElementsAttr>().getRawData().data());
557 }
558 
559 //===----------------------------------------------------------------------===//
560 // Opaque elements attribute.
561 //===----------------------------------------------------------------------===//
562 
563 bool mlirAttributeIsAOpaqueElements(MlirAttribute attr) {
564   return unwrap(attr).isa<OpaqueElementsAttr>();
565 }
566 
567 //===----------------------------------------------------------------------===//
568 // Sparse elements attribute.
569 //===----------------------------------------------------------------------===//
570 
571 bool mlirAttributeIsASparseElements(MlirAttribute attr) {
572   return unwrap(attr).isa<SparseElementsAttr>();
573 }
574 
575 MlirAttribute mlirSparseElementsAttribute(MlirType shapedType,
576                                           MlirAttribute denseIndices,
577                                           MlirAttribute denseValues) {
578   return wrap(
579       SparseElementsAttr::get(unwrap(shapedType).cast<ShapedType>(),
580                               unwrap(denseIndices).cast<DenseElementsAttr>(),
581                               unwrap(denseValues).cast<DenseElementsAttr>()));
582 }
583 
584 MlirAttribute mlirSparseElementsAttrGetIndices(MlirAttribute attr) {
585   return wrap(unwrap(attr).cast<SparseElementsAttr>().getIndices());
586 }
587 
588 MlirAttribute mlirSparseElementsAttrGetValues(MlirAttribute attr) {
589   return wrap(unwrap(attr).cast<SparseElementsAttr>().getValues());
590 }
591