8143307b33
This commit generalizes the special tensor.extract_slice/tensor.insert_slice bufferization rules to tensor subset ops. Ops that insert a tensor into a tensor at a specified subset (e.g., tensor.insert_slice, tensor.scatter) can implement the `SubsetInsertionOpInterface`. Apart from adding a new op interface (extending the API), this change is NFC. The only ops that currently implement the new interface are tensor.insert_slice and tensor.parallel_insert_slice, and those ops were are supported by One-Shot Bufferize.
83 lines
3.0 KiB
C++
83 lines
3.0 KiB
C++
//===- SubsetInsertionOpInterfaceImpl.cpp - Tensor subsets ----------------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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#include "mlir/Dialect/Tensor/Transforms/SubsetInsertionOpInterfaceImpl.h"
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#include "mlir/Dialect/Bufferization/IR/SubsetInsertionOpInterface.h"
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#include "mlir/Dialect/Tensor/IR/Tensor.h"
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using namespace mlir;
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using namespace mlir::bufferization;
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using namespace mlir::tensor;
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namespace {
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/// Return "true" if `insertSliceOp` inserts into a subset that is equivalent
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/// to the subset defined by `candidate`. `equivalenceFn` is used to determine
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/// equivalence of tensors.
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template <typename OpTy>
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bool isSubsetEquivalentToInsertSliceLikeOp(
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OpTy insertSliceOp, Value candidate,
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function_ref<bool(Value, Value)> equivalenceFn) {
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// Look for a matching tensor.extract_slice op.
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auto extractSliceOp = candidate.getDefiningOp<tensor::ExtractSliceOp>();
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if (!extractSliceOp)
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return false;
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if (!equivalenceFn(extractSliceOp.getSource(), insertSliceOp.getDest()))
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return false;
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return sameOffsetsSizesAndStrides(extractSliceOp, insertSliceOp,
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isEqualConstantIntOrValue);
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}
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struct InsertSliceOpInterface
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: public SubsetInsertionOpInterface::ExternalModel<InsertSliceOpInterface,
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tensor::InsertSliceOp> {
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OpOperand &getSourceOperand(Operation *op) const {
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return op->getOpOperand(0);
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}
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bool
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isEquivalentSubset(Operation *op, Value candidate,
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function_ref<bool(Value, Value)> equivalenceFn) const {
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auto insertSliceOp = cast<tensor::InsertSliceOp>(op);
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return isSubsetEquivalentToInsertSliceLikeOp(insertSliceOp, candidate,
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equivalenceFn);
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}
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};
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struct ParallelInsertSliceOpInterface
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: public SubsetInsertionOpInterface::ExternalModel<
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ParallelInsertSliceOpInterface, tensor::ParallelInsertSliceOp> {
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OpOperand &getSourceOperand(Operation *op) const {
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return op->getOpOperand(0);
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}
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OpOperand &getDestinationOperand(Operation *op) const {
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return op->getOpOperand(1);
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}
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bool
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isEquivalentSubset(Operation *op, Value candidate,
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function_ref<bool(Value, Value)> equivalenceFn) const {
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auto insertSliceOp = cast<tensor::ParallelInsertSliceOp>(op);
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return isSubsetEquivalentToInsertSliceLikeOp(insertSliceOp, candidate,
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equivalenceFn);
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}
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};
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} // namespace
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void mlir::tensor::registerSubsetInsertionOpInterfaceExternalModels(
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DialectRegistry ®istry) {
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registry.addExtension(+[](MLIRContext *ctx, tensor::TensorDialect *dialect) {
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InsertSliceOp::attachInterface<InsertSliceOpInterface>(*ctx);
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ParallelInsertSliceOp::attachInterface<ParallelInsertSliceOpInterface>(
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*ctx);
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});
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}
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