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//===- SwapExtractSliceWithProducerPatterns.cpp ---------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
//
// Swap a `tensor.extract_slice` with the producer of the source if the producer
// implements the `TilingInterface`. When used in conjunction with tiling this
// effectively tiles + fuses the producer with its consumer.
//
//===----------------------------------------------------------------------===//
#include "mlir/Dialect/Arith/IR/Arith.h"
#include "mlir/Dialect/Tensor/IR/Tensor.h"
#include "mlir/Dialect/Tensor/Transforms/Transforms.h"
#include "mlir/Dialect/Utils/StaticValueUtils.h"
#include "mlir/Interfaces/TilingInterface.h"
using namespace mlir;
FailureOr<Value> tensor::replaceExtractSliceWithTiledProducer(
OpBuilder &builder, tensor::ExtractSliceOp sliceOp, OpResult producer) {
auto producerOp = dyn_cast<TilingInterface>(producer.getOwner());
if (!producerOp)
return failure();
// `TilingInterface` currently only supports strides being 1.
if (llvm::any_of(sliceOp.getMixedStrides(), [](OpFoldResult ofr) {
return !isConstantIntValue(ofr, 1);
}))
return failure();
FailureOr<Value> tiledResult = producerOp.generateResultTileValue(
builder, producer.getResultNumber(), sliceOp.getMixedOffsets(),
sliceOp.getMixedSizes());
if (failed(tiledResult))
return failure();
return *tiledResult;
}
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