| //===- Generalization.cpp - linalg named ops to generic ops --------------===// |
| // |
| // 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 |
| // |
| //===----------------------------------------------------------------------===// |
| // |
| // This file implements the Linalg generalization pass. It converts named |
| // Linalg ops to linalg.generic ops. |
| // |
| //===----------------------------------------------------------------------===// |
| |
| #include "PassDetail.h" |
| #include "mlir/Dialect/Linalg/IR/LinalgOps.h" |
| #include "mlir/Dialect/Linalg/Passes.h" |
| #include "mlir/Dialect/Linalg/Transforms/Transforms.h" |
| #include "mlir/IR/AffineMap.h" |
| #include "mlir/IR/Attributes.h" |
| #include "mlir/IR/Builders.h" |
| #include "mlir/IR/ImplicitLocOpBuilder.h" |
| #include "mlir/IR/PatternMatch.h" |
| #include "mlir/Transforms/GreedyPatternRewriteDriver.h" |
| #include "llvm/ADT/SmallVector.h" |
| #include "llvm/Support/Debug.h" |
| |
| #define DEBUG_TYPE "linalg-generalization" |
| |
| using namespace mlir; |
| using namespace mlir::linalg; |
| |
| LogicalResult mlir::linalg::generalizeNamedOpPrecondition(Operation *op) { |
| LinalgOp namedOp = dyn_cast<LinalgOp>(op); |
| // Check if the operation is a LinalgOp but not a GenericOp. |
| if (!namedOp || isa<GenericOp>(op)) |
| return failure(); |
| // Check if the operation has a region builder. |
| if (!namedOp.getRegionBuilder()) |
| return failure(); |
| return success(); |
| } |
| |
| GenericOp mlir::linalg::generalizeNamedOp(PatternRewriter &rewriter, |
| LinalgOp namedOp) { |
| SmallVector<Value> inputOperands = namedOp.getInputOperands(); |
| SmallVector<Value> outputOperands = namedOp.getOutputOperands(); |
| SmallVector<AffineMap> indexingMaps = namedOp.getIndexingMaps(); |
| SmallVector<StringRef> iterators = llvm::to_vector<4>( |
| namedOp.iterator_types().getAsValueRange<StringAttr>()); |
| SmallVector<RankedTensorType> resultTypes = namedOp.getOutputTensorTypes(); |
| SmallVector<Type> types(resultTypes.begin(), resultTypes.end()); |
| |
| // All named ops have a region attached that can be inlined. |
| assert(namedOp->getNumRegions() == 1 && |
| "expect named op to have one region attached"); |
| GenericOp genericOp = |
| rewriter.create<GenericOp>(namedOp.getLoc(), types, inputOperands, |
| outputOperands, indexingMaps, iterators); |
| rewriter.inlineRegionBefore(namedOp->getRegion(0), genericOp.region(), |
| genericOp.region().begin()); |
| return genericOp; |
| } |
| |
| namespace { |
| |
| struct LinalgGeneralizationPass |
| : public LinalgGeneralizationBase<LinalgGeneralizationPass> { |
| void runOnFunction() override; |
| }; |
| |
| } // namespace |
| |
| void LinalgGeneralizationPass::runOnFunction() { |
| FuncOp func = getFunction(); |
| RewritePatternSet patterns(&getContext()); |
| populateLinalgNamedOpsGeneralizationPatterns(patterns); |
| (void)applyPatternsAndFoldGreedily(func.getBody(), std::move(patterns)); |
| } |
| |
| void mlir::linalg::populateLinalgNamedOpsGeneralizationPatterns( |
| RewritePatternSet &patterns, LinalgTransformationFilter marker) { |
| patterns.add<LinalgGeneralizationPattern>(patterns.getContext(), marker); |
| } |
| |
| std::unique_ptr<OperationPass<FuncOp>> mlir::createLinalgGeneralizationPass() { |
| return std::make_unique<LinalgGeneralizationPass>(); |
| } |