| 1 | //===- TosaToSCFPass.cpp - Lowering Tosa to SCF 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 | // This transformation pass legalizes Tosa operations to the SCF dialect. |
| 10 | // |
| 11 | //===----------------------------------------------------------------------===// |
| 12 | |
| 13 | #include "mlir/Conversion/TosaToSCF/TosaToSCF.h" |
| 14 | |
| 15 | #include "mlir/Dialect/Func/IR/FuncOps.h" |
| 16 | #include "mlir/Dialect/SCF/IR/SCF.h" |
| 17 | #include "mlir/Dialect/Tensor/IR/Tensor.h" |
| 18 | #include "mlir/Dialect/Tosa/IR/TosaOps.h" |
| 19 | #include "mlir/Dialect/Tosa/Transforms/Passes.h" |
| 20 | #include "mlir/IR/PatternMatch.h" |
| 21 | #include "mlir/Pass/PassManager.h" |
| 22 | #include "mlir/Transforms/DialectConversion.h" |
| 23 | #include "mlir/Transforms/GreedyPatternRewriteDriver.h" |
| 24 | |
| 25 | namespace mlir { |
| 26 | #define GEN_PASS_DEF_TOSATOSCF |
| 27 | #include "mlir/Conversion/Passes.h.inc" |
| 28 | } // namespace mlir |
| 29 | |
| 30 | using namespace mlir; |
| 31 | using namespace tosa; |
| 32 | |
| 33 | namespace { |
| 34 | struct TosaToSCF : public impl::TosaToSCFBase<TosaToSCF> { |
| 35 | public: |
| 36 | void runOnOperation() override { |
| 37 | RewritePatternSet patterns(&getContext()); |
| 38 | ConversionTarget target(getContext()); |
| 39 | target.addLegalDialect<tensor::TensorDialect, scf::SCFDialect>(); |
| 40 | target.addIllegalOp<tosa::IfOp, tosa::ScatterOp, tosa::WhileOp>(); |
| 41 | target.markUnknownOpDynamicallyLegal([](Operation *) { return true; }); |
| 42 | |
| 43 | auto *op = getOperation(); |
| 44 | mlir::tosa::populateTosaToSCFConversionPatterns(patterns: &patterns); |
| 45 | if (failed(applyPartialConversion(op, target, std::move(patterns)))) |
| 46 | signalPassFailure(); |
| 47 | } |
| 48 | }; |
| 49 | } // namespace |
| 50 | |
| 51 | std::unique_ptr<Pass> mlir::tosa::createTosaToSCF() { |
| 52 | return std::make_unique<TosaToSCF>(); |
| 53 | } |
| 54 | |
| 55 | void mlir::tosa::addTosaToSCFPasses(OpPassManager &pm) { |
| 56 | pm.addNestedPass<func::FuncOp>(createTosaToSCF()); |
| 57 | } |
| 58 |