| 1 | //===- ControlFlowToSPIRVPass.cpp - ControlFlow to SPIR-V Pass ------------===// |
|---|---|
| 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 pass to convert ControlFlow dialect to SPIR-V dialect. |
| 10 | // |
| 11 | //===----------------------------------------------------------------------===// |
| 12 | |
| 13 | #include "mlir/Conversion/ControlFlowToSPIRV/ControlFlowToSPIRVPass.h" |
| 14 | |
| 15 | #include "mlir/Conversion/ControlFlowToSPIRV/ControlFlowToSPIRV.h" |
| 16 | #include "mlir/Dialect/SPIRV/IR/SPIRVDialect.h" |
| 17 | #include "mlir/Dialect/SPIRV/Transforms/SPIRVConversion.h" |
| 18 | |
| 19 | namespace mlir { |
| 20 | #define GEN_PASS_DEF_CONVERTCONTROLFLOWTOSPIRV |
| 21 | #include "mlir/Conversion/Passes.h.inc" |
| 22 | } // namespace mlir |
| 23 | |
| 24 | using namespace mlir; |
| 25 | |
| 26 | namespace { |
| 27 | /// A pass converting MLIR ControlFlow operations into the SPIR-V dialect. |
| 28 | class ConvertControlFlowToSPIRVPass final |
| 29 | : public impl::ConvertControlFlowToSPIRVBase< |
| 30 | ConvertControlFlowToSPIRVPass> { |
| 31 | void runOnOperation() override; |
| 32 | }; |
| 33 | } // namespace |
| 34 | |
| 35 | void ConvertControlFlowToSPIRVPass::runOnOperation() { |
| 36 | MLIRContext *context = &getContext(); |
| 37 | Operation *op = getOperation(); |
| 38 | |
| 39 | auto targetAttr = spirv::lookupTargetEnvOrDefault(op); |
| 40 | std::unique_ptr<ConversionTarget> target = |
| 41 | SPIRVConversionTarget::get(targetAttr: targetAttr); |
| 42 | |
| 43 | SPIRVConversionOptions options; |
| 44 | options.emulateLT32BitScalarTypes = this->emulateLT32BitScalarTypes; |
| 45 | SPIRVTypeConverter typeConverter(targetAttr, options); |
| 46 | |
| 47 | // TODO: We should also take care of block argument type conversion. |
| 48 | |
| 49 | RewritePatternSet patterns(context); |
| 50 | cf::populateControlFlowToSPIRVPatterns(typeConverter, patterns); |
| 51 | |
| 52 | if (failed(applyPartialConversion(op, *target, std::move(patterns)))) |
| 53 | return signalPassFailure(); |
| 54 | } |
| 55 | |
| 56 | std::unique_ptr<OperationPass<>> mlir::createConvertControlFlowToSPIRVPass() { |
| 57 | return std::make_unique<ConvertControlFlowToSPIRVPass>(); |
| 58 | } |
| 59 |