1 //===- OpenACCToLLVMIRTranslation.cpp -------------------------------------===//
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 // This file implements a translation between the MLIR OpenACC dialect and LLVM
10 // IR.
11 //
12 //===----------------------------------------------------------------------===//
13
14 #include "mlir/Target/LLVMIR/Dialect/OpenACC/OpenACCToLLVMIRTranslation.h"
15 #include "mlir/Conversion/OpenACCToLLVM/ConvertOpenACCToLLVM.h"
16 #include "mlir/Dialect/LLVMIR/LLVMDialect.h"
17 #include "mlir/Dialect/OpenACC/OpenACC.h"
18 #include "mlir/IR/BuiltinOps.h"
19 #include "mlir/IR/Operation.h"
20 #include "mlir/Support/LLVM.h"
21 #include "mlir/Target/LLVMIR/ModuleTranslation.h"
22
23 #include "llvm/ADT/TypeSwitch.h"
24 #include "llvm/Frontend/OpenMP/OMPConstants.h"
25 #include "llvm/Support/FormatVariadic.h"
26
27 using namespace mlir;
28
29 using OpenACCIRBuilder = llvm::OpenMPIRBuilder;
30
31 //===----------------------------------------------------------------------===//
32 // Utility functions
33 //===----------------------------------------------------------------------===//
34
35 /// Flag values are extracted from openmp/libomptarget/include/omptarget.h and
36 /// mapped to corresponding OpenACC flags.
37 static constexpr uint64_t kCreateFlag = 0x000;
38 static constexpr uint64_t kDeviceCopyinFlag = 0x001;
39 static constexpr uint64_t kHostCopyoutFlag = 0x002;
40 static constexpr uint64_t kCopyFlag = kDeviceCopyinFlag | kHostCopyoutFlag;
41 static constexpr uint64_t kPresentFlag = 0x1000;
42 static constexpr uint64_t kDeleteFlag = 0x008;
43 // Runtime extension to implement the OpenACC second reference counter.
44 static constexpr uint64_t kHoldFlag = 0x2000;
45
46 /// Default value for the device id
47 static constexpr int64_t kDefaultDevice = -1;
48
49 /// Create a constant string location from the MLIR Location information.
createSourceLocStrFromLocation(Location loc,OpenACCIRBuilder & builder,StringRef name)50 static llvm::Constant *createSourceLocStrFromLocation(Location loc,
51 OpenACCIRBuilder &builder,
52 StringRef name) {
53 if (auto fileLoc = loc.dyn_cast<FileLineColLoc>()) {
54 StringRef fileName = fileLoc.getFilename();
55 unsigned lineNo = fileLoc.getLine();
56 unsigned colNo = fileLoc.getColumn();
57 return builder.getOrCreateSrcLocStr(name, fileName, lineNo, colNo);
58 } else {
59 std::string locStr;
60 llvm::raw_string_ostream locOS(locStr);
61 locOS << loc;
62 return builder.getOrCreateSrcLocStr(locOS.str());
63 }
64 }
65
66 /// Create the location struct from the operation location information.
createSourceLocationInfo(OpenACCIRBuilder & builder,Operation * op)67 static llvm::Value *createSourceLocationInfo(OpenACCIRBuilder &builder,
68 Operation *op) {
69 auto loc = op->getLoc();
70 auto funcOp = op->getParentOfType<LLVM::LLVMFuncOp>();
71 StringRef funcName = funcOp ? funcOp.getName() : "unknown";
72 llvm::Constant *locStr =
73 createSourceLocStrFromLocation(loc, builder, funcName);
74 return builder.getOrCreateIdent(locStr);
75 }
76
77 /// Create a constant string representing the mapping information extracted from
78 /// the MLIR location information.
createMappingInformation(Location loc,OpenACCIRBuilder & builder)79 static llvm::Constant *createMappingInformation(Location loc,
80 OpenACCIRBuilder &builder) {
81 if (auto nameLoc = loc.dyn_cast<NameLoc>()) {
82 StringRef name = nameLoc.getName();
83 return createSourceLocStrFromLocation(nameLoc.getChildLoc(), builder, name);
84 } else {
85 return createSourceLocStrFromLocation(loc, builder, "unknown");
86 }
87 }
88
89 /// Return the runtime function used to lower the given operation.
getAssociatedFunction(OpenACCIRBuilder & builder,Operation * op)90 static llvm::Function *getAssociatedFunction(OpenACCIRBuilder &builder,
91 Operation *op) {
92 return llvm::TypeSwitch<Operation *, llvm::Function *>(op)
93 .Case([&](acc::EnterDataOp) {
94 return builder.getOrCreateRuntimeFunctionPtr(
95 llvm::omp::OMPRTL___tgt_target_data_begin_mapper);
96 })
97 .Case([&](acc::ExitDataOp) {
98 return builder.getOrCreateRuntimeFunctionPtr(
99 llvm::omp::OMPRTL___tgt_target_data_end_mapper);
100 })
101 .Case([&](acc::UpdateOp) {
102 return builder.getOrCreateRuntimeFunctionPtr(
103 llvm::omp::OMPRTL___tgt_target_data_update_mapper);
104 });
105 llvm_unreachable("Unknown OpenACC operation");
106 }
107
108 /// Computes the size of type in bytes.
getSizeInBytes(llvm::IRBuilderBase & builder,llvm::Value * basePtr)109 static llvm::Value *getSizeInBytes(llvm::IRBuilderBase &builder,
110 llvm::Value *basePtr) {
111 llvm::LLVMContext &ctx = builder.getContext();
112 llvm::Value *null =
113 llvm::Constant::getNullValue(basePtr->getType()->getPointerTo());
114 llvm::Value *sizeGep =
115 builder.CreateGEP(basePtr->getType(), null, builder.getInt32(1));
116 llvm::Value *sizePtrToInt =
117 builder.CreatePtrToInt(sizeGep, llvm::Type::getInt64Ty(ctx));
118 return sizePtrToInt;
119 }
120
121 /// Extract pointer, size and mapping information from operands
122 /// to populate the future functions arguments.
123 static LogicalResult
processOperands(llvm::IRBuilderBase & builder,LLVM::ModuleTranslation & moduleTranslation,Operation * op,ValueRange operands,unsigned totalNbOperand,uint64_t operandFlag,SmallVector<uint64_t> & flags,SmallVectorImpl<llvm::Constant * > & names,unsigned & index,struct OpenACCIRBuilder::MapperAllocas & mapperAllocas)124 processOperands(llvm::IRBuilderBase &builder,
125 LLVM::ModuleTranslation &moduleTranslation, Operation *op,
126 ValueRange operands, unsigned totalNbOperand,
127 uint64_t operandFlag, SmallVector<uint64_t> &flags,
128 SmallVectorImpl<llvm::Constant *> &names, unsigned &index,
129 struct OpenACCIRBuilder::MapperAllocas &mapperAllocas) {
130 OpenACCIRBuilder *accBuilder = moduleTranslation.getOpenMPBuilder();
131 llvm::LLVMContext &ctx = builder.getContext();
132 auto *i8PtrTy = llvm::Type::getInt8PtrTy(ctx);
133 auto *arrI8PtrTy = llvm::ArrayType::get(i8PtrTy, totalNbOperand);
134 auto *i64Ty = llvm::Type::getInt64Ty(ctx);
135 auto *arrI64Ty = llvm::ArrayType::get(i64Ty, totalNbOperand);
136
137 for (Value data : operands) {
138 llvm::Value *dataValue = moduleTranslation.lookupValue(data);
139
140 llvm::Value *dataPtrBase;
141 llvm::Value *dataPtr;
142 llvm::Value *dataSize;
143
144 // Handle operands that were converted to DataDescriptor.
145 if (DataDescriptor::isValid(data)) {
146 dataPtrBase =
147 builder.CreateExtractValue(dataValue, kPtrBasePosInDataDescriptor);
148 dataPtr = builder.CreateExtractValue(dataValue, kPtrPosInDataDescriptor);
149 dataSize =
150 builder.CreateExtractValue(dataValue, kSizePosInDataDescriptor);
151 } else if (data.getType().isa<LLVM::LLVMPointerType>()) {
152 dataPtrBase = dataValue;
153 dataPtr = dataValue;
154 dataSize = getSizeInBytes(builder, dataValue);
155 } else {
156 return op->emitOpError()
157 << "Data operand must be legalized before translation."
158 << "Unsupported type: " << data.getType();
159 }
160
161 // Store base pointer extracted from operand into the i-th position of
162 // argBase.
163 llvm::Value *ptrBaseGEP = builder.CreateInBoundsGEP(
164 arrI8PtrTy, mapperAllocas.ArgsBase,
165 {builder.getInt32(0), builder.getInt32(index)});
166 llvm::Value *ptrBaseCast = builder.CreateBitCast(
167 ptrBaseGEP, dataPtrBase->getType()->getPointerTo());
168 builder.CreateStore(dataPtrBase, ptrBaseCast);
169
170 // Store pointer extracted from operand into the i-th position of args.
171 llvm::Value *ptrGEP = builder.CreateInBoundsGEP(
172 arrI8PtrTy, mapperAllocas.Args,
173 {builder.getInt32(0), builder.getInt32(index)});
174 llvm::Value *ptrCast =
175 builder.CreateBitCast(ptrGEP, dataPtr->getType()->getPointerTo());
176 builder.CreateStore(dataPtr, ptrCast);
177
178 // Store size extracted from operand into the i-th position of argSizes.
179 llvm::Value *sizeGEP = builder.CreateInBoundsGEP(
180 arrI64Ty, mapperAllocas.ArgSizes,
181 {builder.getInt32(0), builder.getInt32(index)});
182 builder.CreateStore(dataSize, sizeGEP);
183
184 flags.push_back(operandFlag);
185 llvm::Constant *mapName =
186 createMappingInformation(data.getLoc(), *accBuilder);
187 names.push_back(mapName);
188 ++index;
189 }
190 return success();
191 }
192
193 /// Process data operands from acc::EnterDataOp
194 static LogicalResult
processDataOperands(llvm::IRBuilderBase & builder,LLVM::ModuleTranslation & moduleTranslation,acc::EnterDataOp op,SmallVector<uint64_t> & flags,SmallVectorImpl<llvm::Constant * > & names,struct OpenACCIRBuilder::MapperAllocas & mapperAllocas)195 processDataOperands(llvm::IRBuilderBase &builder,
196 LLVM::ModuleTranslation &moduleTranslation,
197 acc::EnterDataOp op, SmallVector<uint64_t> &flags,
198 SmallVectorImpl<llvm::Constant *> &names,
199 struct OpenACCIRBuilder::MapperAllocas &mapperAllocas) {
200 // TODO add `create_zero` and `attach` operands
201
202 unsigned index = 0;
203
204 // Create operands are handled as `alloc` call.
205 if (failed(processOperands(builder, moduleTranslation, op,
206 op.createOperands(), op.getNumDataOperands(),
207 kCreateFlag, flags, names, index, mapperAllocas)))
208 return failure();
209
210 // Copyin operands are handled as `to` call.
211 if (failed(processOperands(builder, moduleTranslation, op,
212 op.copyinOperands(), op.getNumDataOperands(),
213 kDeviceCopyinFlag, flags, names, index,
214 mapperAllocas)))
215 return failure();
216
217 return success();
218 }
219
220 /// Process data operands from acc::ExitDataOp
221 static LogicalResult
processDataOperands(llvm::IRBuilderBase & builder,LLVM::ModuleTranslation & moduleTranslation,acc::ExitDataOp op,SmallVector<uint64_t> & flags,SmallVectorImpl<llvm::Constant * > & names,struct OpenACCIRBuilder::MapperAllocas & mapperAllocas)222 processDataOperands(llvm::IRBuilderBase &builder,
223 LLVM::ModuleTranslation &moduleTranslation,
224 acc::ExitDataOp op, SmallVector<uint64_t> &flags,
225 SmallVectorImpl<llvm::Constant *> &names,
226 struct OpenACCIRBuilder::MapperAllocas &mapperAllocas) {
227 // TODO add `detach` operands
228
229 unsigned index = 0;
230
231 // Delete operands are handled as `delete` call.
232 if (failed(processOperands(builder, moduleTranslation, op,
233 op.deleteOperands(), op.getNumDataOperands(),
234 kDeleteFlag, flags, names, index, mapperAllocas)))
235 return failure();
236
237 // Copyout operands are handled as `from` call.
238 if (failed(processOperands(builder, moduleTranslation, op,
239 op.copyoutOperands(), op.getNumDataOperands(),
240 kHostCopyoutFlag, flags, names, index,
241 mapperAllocas)))
242 return failure();
243
244 return success();
245 }
246
247 /// Process data operands from acc::UpdateOp
248 static LogicalResult
processDataOperands(llvm::IRBuilderBase & builder,LLVM::ModuleTranslation & moduleTranslation,acc::UpdateOp op,SmallVector<uint64_t> & flags,SmallVectorImpl<llvm::Constant * > & names,struct OpenACCIRBuilder::MapperAllocas & mapperAllocas)249 processDataOperands(llvm::IRBuilderBase &builder,
250 LLVM::ModuleTranslation &moduleTranslation,
251 acc::UpdateOp op, SmallVector<uint64_t> &flags,
252 SmallVectorImpl<llvm::Constant *> &names,
253 struct OpenACCIRBuilder::MapperAllocas &mapperAllocas) {
254 unsigned index = 0;
255
256 // Host operands are handled as `from` call.
257 if (failed(processOperands(builder, moduleTranslation, op, op.hostOperands(),
258 op.getNumDataOperands(), kHostCopyoutFlag, flags,
259 names, index, mapperAllocas)))
260 return failure();
261
262 // Device operands are handled as `to` call.
263 if (failed(processOperands(builder, moduleTranslation, op,
264 op.deviceOperands(), op.getNumDataOperands(),
265 kDeviceCopyinFlag, flags, names, index,
266 mapperAllocas)))
267 return failure();
268
269 return success();
270 }
271
272 //===----------------------------------------------------------------------===//
273 // Conversion functions
274 //===----------------------------------------------------------------------===//
275
276 /// Converts an OpenACC data operation into LLVM IR.
convertDataOp(acc::DataOp & op,llvm::IRBuilderBase & builder,LLVM::ModuleTranslation & moduleTranslation)277 static LogicalResult convertDataOp(acc::DataOp &op,
278 llvm::IRBuilderBase &builder,
279 LLVM::ModuleTranslation &moduleTranslation) {
280 llvm::LLVMContext &ctx = builder.getContext();
281 auto enclosingFuncOp = op.getOperation()->getParentOfType<LLVM::LLVMFuncOp>();
282 llvm::Function *enclosingFunction =
283 moduleTranslation.lookupFunction(enclosingFuncOp.getName());
284
285 OpenACCIRBuilder *accBuilder = moduleTranslation.getOpenMPBuilder();
286
287 llvm::Value *srcLocInfo = createSourceLocationInfo(*accBuilder, op);
288
289 llvm::Function *beginMapperFunc = accBuilder->getOrCreateRuntimeFunctionPtr(
290 llvm::omp::OMPRTL___tgt_target_data_begin_mapper);
291
292 llvm::Function *endMapperFunc = accBuilder->getOrCreateRuntimeFunctionPtr(
293 llvm::omp::OMPRTL___tgt_target_data_end_mapper);
294
295 // Number of arguments in the data operation.
296 unsigned totalNbOperand = op.getNumDataOperands();
297
298 struct OpenACCIRBuilder::MapperAllocas mapperAllocas;
299 OpenACCIRBuilder::InsertPointTy allocaIP(
300 &enclosingFunction->getEntryBlock(),
301 enclosingFunction->getEntryBlock().getFirstInsertionPt());
302 accBuilder->createMapperAllocas(builder.saveIP(), allocaIP, totalNbOperand,
303 mapperAllocas);
304
305 SmallVector<uint64_t> flags;
306 SmallVector<llvm::Constant *> names;
307 unsigned index = 0;
308
309 // TODO handle no_create, deviceptr and attach operands.
310
311 if (failed(processOperands(builder, moduleTranslation, op, op.copyOperands(),
312 totalNbOperand, kCopyFlag | kHoldFlag, flags,
313 names, index, mapperAllocas)))
314 return failure();
315
316 if (failed(processOperands(
317 builder, moduleTranslation, op, op.copyinOperands(), totalNbOperand,
318 kDeviceCopyinFlag | kHoldFlag, flags, names, index, mapperAllocas)))
319 return failure();
320
321 // TODO copyin readonly currenlty handled as copyin. Update when extension
322 // available.
323 if (failed(processOperands(builder, moduleTranslation, op,
324 op.copyinReadonlyOperands(), totalNbOperand,
325 kDeviceCopyinFlag | kHoldFlag, flags, names, index,
326 mapperAllocas)))
327 return failure();
328
329 if (failed(processOperands(
330 builder, moduleTranslation, op, op.copyoutOperands(), totalNbOperand,
331 kHostCopyoutFlag | kHoldFlag, flags, names, index, mapperAllocas)))
332 return failure();
333
334 // TODO copyout zero currenlty handled as copyout. Update when extension
335 // available.
336 if (failed(processOperands(builder, moduleTranslation, op,
337 op.copyoutZeroOperands(), totalNbOperand,
338 kHostCopyoutFlag | kHoldFlag, flags, names, index,
339 mapperAllocas)))
340 return failure();
341
342 if (failed(processOperands(builder, moduleTranslation, op,
343 op.createOperands(), totalNbOperand,
344 kCreateFlag | kHoldFlag, flags, names, index,
345 mapperAllocas)))
346 return failure();
347
348 // TODO create zero currenlty handled as create. Update when extension
349 // available.
350 if (failed(processOperands(builder, moduleTranslation, op,
351 op.createZeroOperands(), totalNbOperand,
352 kCreateFlag | kHoldFlag, flags, names, index,
353 mapperAllocas)))
354 return failure();
355
356 if (failed(processOperands(builder, moduleTranslation, op,
357 op.presentOperands(), totalNbOperand,
358 kPresentFlag | kHoldFlag, flags, names, index,
359 mapperAllocas)))
360 return failure();
361
362 llvm::GlobalVariable *maptypes =
363 accBuilder->createOffloadMaptypes(flags, ".offload_maptypes");
364 llvm::Value *maptypesArg = builder.CreateConstInBoundsGEP2_32(
365 llvm::ArrayType::get(llvm::Type::getInt64Ty(ctx), totalNbOperand),
366 maptypes, /*Idx0=*/0, /*Idx1=*/0);
367
368 llvm::GlobalVariable *mapnames =
369 accBuilder->createOffloadMapnames(names, ".offload_mapnames");
370 llvm::Value *mapnamesArg = builder.CreateConstInBoundsGEP2_32(
371 llvm::ArrayType::get(llvm::Type::getInt8PtrTy(ctx), totalNbOperand),
372 mapnames, /*Idx0=*/0, /*Idx1=*/0);
373
374 // Create call to start the data region.
375 accBuilder->emitMapperCall(builder.saveIP(), beginMapperFunc, srcLocInfo,
376 maptypesArg, mapnamesArg, mapperAllocas,
377 kDefaultDevice, totalNbOperand);
378
379 // Convert the region.
380 llvm::BasicBlock *entryBlock = nullptr;
381
382 for (Block &bb : op.region()) {
383 llvm::BasicBlock *llvmBB = llvm::BasicBlock::Create(
384 ctx, "acc.data", builder.GetInsertBlock()->getParent());
385 if (entryBlock == nullptr)
386 entryBlock = llvmBB;
387 moduleTranslation.mapBlock(&bb, llvmBB);
388 }
389
390 auto afterDataRegion = builder.saveIP();
391
392 llvm::BranchInst *sourceTerminator = builder.CreateBr(entryBlock);
393
394 builder.restoreIP(afterDataRegion);
395 llvm::BasicBlock *endDataBlock = llvm::BasicBlock::Create(
396 ctx, "acc.end_data", builder.GetInsertBlock()->getParent());
397
398 SetVector<Block *> blocks =
399 LLVM::detail::getTopologicallySortedBlocks(op.region());
400 for (Block *bb : blocks) {
401 llvm::BasicBlock *llvmBB = moduleTranslation.lookupBlock(bb);
402 if (bb->isEntryBlock()) {
403 assert(sourceTerminator->getNumSuccessors() == 1 &&
404 "provided entry block has multiple successors");
405 sourceTerminator->setSuccessor(0, llvmBB);
406 }
407
408 if (failed(
409 moduleTranslation.convertBlock(*bb, bb->isEntryBlock(), builder))) {
410 return failure();
411 }
412
413 if (isa<acc::TerminatorOp, acc::YieldOp>(bb->getTerminator()))
414 builder.CreateBr(endDataBlock);
415 }
416
417 // Create call to end the data region.
418 builder.SetInsertPoint(endDataBlock);
419 accBuilder->emitMapperCall(builder.saveIP(), endMapperFunc, srcLocInfo,
420 maptypesArg, mapnamesArg, mapperAllocas,
421 kDefaultDevice, totalNbOperand);
422
423 return success();
424 }
425
426 /// Converts an OpenACC standalone data operation into LLVM IR.
427 template <typename OpTy>
428 static LogicalResult
convertStandaloneDataOp(OpTy & op,llvm::IRBuilderBase & builder,LLVM::ModuleTranslation & moduleTranslation)429 convertStandaloneDataOp(OpTy &op, llvm::IRBuilderBase &builder,
430 LLVM::ModuleTranslation &moduleTranslation) {
431 auto enclosingFuncOp =
432 op.getOperation()->template getParentOfType<LLVM::LLVMFuncOp>();
433 llvm::Function *enclosingFunction =
434 moduleTranslation.lookupFunction(enclosingFuncOp.getName());
435
436 OpenACCIRBuilder *accBuilder = moduleTranslation.getOpenMPBuilder();
437
438 auto *srcLocInfo = createSourceLocationInfo(*accBuilder, op);
439 auto *mapperFunc = getAssociatedFunction(*accBuilder, op);
440
441 // Number of arguments in the enter_data operation.
442 unsigned totalNbOperand = op.getNumDataOperands();
443
444 llvm::LLVMContext &ctx = builder.getContext();
445
446 struct OpenACCIRBuilder::MapperAllocas mapperAllocas;
447 OpenACCIRBuilder::InsertPointTy allocaIP(
448 &enclosingFunction->getEntryBlock(),
449 enclosingFunction->getEntryBlock().getFirstInsertionPt());
450 accBuilder->createMapperAllocas(builder.saveIP(), allocaIP, totalNbOperand,
451 mapperAllocas);
452
453 SmallVector<uint64_t> flags;
454 SmallVector<llvm::Constant *> names;
455
456 if (failed(processDataOperands(builder, moduleTranslation, op, flags, names,
457 mapperAllocas)))
458 return failure();
459
460 llvm::GlobalVariable *maptypes =
461 accBuilder->createOffloadMaptypes(flags, ".offload_maptypes");
462 llvm::Value *maptypesArg = builder.CreateConstInBoundsGEP2_32(
463 llvm::ArrayType::get(llvm::Type::getInt64Ty(ctx), totalNbOperand),
464 maptypes, /*Idx0=*/0, /*Idx1=*/0);
465
466 llvm::GlobalVariable *mapnames =
467 accBuilder->createOffloadMapnames(names, ".offload_mapnames");
468 llvm::Value *mapnamesArg = builder.CreateConstInBoundsGEP2_32(
469 llvm::ArrayType::get(llvm::Type::getInt8PtrTy(ctx), totalNbOperand),
470 mapnames, /*Idx0=*/0, /*Idx1=*/0);
471
472 accBuilder->emitMapperCall(builder.saveIP(), mapperFunc, srcLocInfo,
473 maptypesArg, mapnamesArg, mapperAllocas,
474 kDefaultDevice, totalNbOperand);
475
476 return success();
477 }
478
479 namespace {
480
481 /// Implementation of the dialect interface that converts operations belonging
482 /// to the OpenACC dialect to LLVM IR.
483 class OpenACCDialectLLVMIRTranslationInterface
484 : public LLVMTranslationDialectInterface {
485 public:
486 using LLVMTranslationDialectInterface::LLVMTranslationDialectInterface;
487
488 /// Translates the given operation to LLVM IR using the provided IR builder
489 /// and saving the state in `moduleTranslation`.
490 LogicalResult
491 convertOperation(Operation *op, llvm::IRBuilderBase &builder,
492 LLVM::ModuleTranslation &moduleTranslation) const final;
493 };
494
495 } // end namespace
496
497 /// Given an OpenACC MLIR operation, create the corresponding LLVM IR
498 /// (including OpenACC runtime calls).
convertOperation(Operation * op,llvm::IRBuilderBase & builder,LLVM::ModuleTranslation & moduleTranslation) const499 LogicalResult OpenACCDialectLLVMIRTranslationInterface::convertOperation(
500 Operation *op, llvm::IRBuilderBase &builder,
501 LLVM::ModuleTranslation &moduleTranslation) const {
502
503 return llvm::TypeSwitch<Operation *, LogicalResult>(op)
504 .Case([&](acc::DataOp dataOp) {
505 return convertDataOp(dataOp, builder, moduleTranslation);
506 })
507 .Case([&](acc::EnterDataOp enterDataOp) {
508 return convertStandaloneDataOp<acc::EnterDataOp>(enterDataOp, builder,
509 moduleTranslation);
510 })
511 .Case([&](acc::ExitDataOp exitDataOp) {
512 return convertStandaloneDataOp<acc::ExitDataOp>(exitDataOp, builder,
513 moduleTranslation);
514 })
515 .Case([&](acc::UpdateOp updateOp) {
516 return convertStandaloneDataOp<acc::UpdateOp>(updateOp, builder,
517 moduleTranslation);
518 })
519 .Case<acc::TerminatorOp, acc::YieldOp>([](auto op) {
520 // `yield` and `terminator` can be just omitted. The block structure was
521 // created in the function that handles their parent operation.
522 assert(op->getNumOperands() == 0 &&
523 "unexpected OpenACC terminator with operands");
524 return success();
525 })
526 .Default([&](Operation *op) {
527 return op->emitError("unsupported OpenACC operation: ")
528 << op->getName();
529 });
530 }
531
registerOpenACCDialectTranslation(DialectRegistry & registry)532 void mlir::registerOpenACCDialectTranslation(DialectRegistry ®istry) {
533 registry.insert<acc::OpenACCDialect>();
534 registry.addDialectInterface<acc::OpenACCDialect,
535 OpenACCDialectLLVMIRTranslationInterface>();
536 }
537
registerOpenACCDialectTranslation(MLIRContext & context)538 void mlir::registerOpenACCDialectTranslation(MLIRContext &context) {
539 DialectRegistry registry;
540 registerOpenACCDialectTranslation(registry);
541 context.appendDialectRegistry(registry);
542 }
543