| 1 | //===- SwapExtractSliceWithProducerPatterns.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 | // Swap a `tensor.extract_slice` with the producer of the source if the producer |
| 10 | // implements the `TilingInterface`. When used in conjunction with tiling this |
| 11 | // effectively tiles + fuses the producer with its consumer. |
| 12 | // |
| 13 | //===----------------------------------------------------------------------===// |
| 14 | |
| 15 | #include "mlir/Dialect/Arith/IR/Arith.h" |
| 16 | #include "mlir/Dialect/Tensor/IR/Tensor.h" |
| 17 | #include "mlir/Dialect/Tensor/Transforms/Transforms.h" |
| 18 | #include "mlir/Dialect/Utils/StaticValueUtils.h" |
| 19 | #include "mlir/Interfaces/TilingInterface.h" |
| 20 | |
| 21 | using namespace mlir; |
| 22 | |
| 23 | FailureOr<TilingResult> tensor::replaceExtractSliceWithTiledProducer( |
| 24 | OpBuilder &builder, tensor::ExtractSliceOp sliceOp, OpResult producer) { |
| 25 | auto producerOp = dyn_cast<TilingInterface>(producer.getOwner()); |
| 26 | if (!producerOp) |
| 27 | return failure(); |
| 28 | |
| 29 | // `TilingInterface` currently only supports strides being 1. |
| 30 | if (llvm::any_of(sliceOp.getMixedStrides(), [](OpFoldResult ofr) { |
| 31 | return !isConstantIntValue(ofr, value: 1); |
| 32 | })) |
| 33 | return failure(); |
| 34 | |
| 35 | FailureOr<TilingResult> tiledResult = producerOp.generateResultTileValue( |
| 36 | builder, producer.getResultNumber(), sliceOp.getMixedOffsets(), |
| 37 | sliceOp.getMixedSizes()); |
| 38 | if (failed(result: tiledResult)) |
| 39 | return failure(); |
| 40 | |
| 41 | return *tiledResult; |
| 42 | } |
| 43 |