| 1 | //===-- RemoveShapeConstraints.cpp - Remove Shape Cstr and Assuming Ops ---===// |
|---|---|
| 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 | #include "mlir/Dialect/Shape/Transforms/Passes.h" |
| 10 | |
| 11 | #include "mlir/Dialect/Func/IR/FuncOps.h" |
| 12 | #include "mlir/Dialect/Shape/IR/Shape.h" |
| 13 | #include "mlir/Transforms/DialectConversion.h" |
| 14 | #include "mlir/Transforms/GreedyPatternRewriteDriver.h" |
| 15 | |
| 16 | namespace mlir { |
| 17 | #define GEN_PASS_DEF_REMOVESHAPECONSTRAINTS |
| 18 | #include "mlir/Dialect/Shape/Transforms/Passes.h.inc" |
| 19 | } // namespace mlir |
| 20 | |
| 21 | using namespace mlir; |
| 22 | |
| 23 | namespace { |
| 24 | /// Removal patterns. |
| 25 | class RemoveCstrBroadcastableOp |
| 26 | : public OpRewritePattern<shape::CstrBroadcastableOp> { |
| 27 | public: |
| 28 | using OpRewritePattern::OpRewritePattern; |
| 29 | |
| 30 | LogicalResult matchAndRewrite(shape::CstrBroadcastableOp op, |
| 31 | PatternRewriter &rewriter) const override { |
| 32 | rewriter.replaceOpWithNewOp<shape::ConstWitnessOp>(op.getOperation(), true); |
| 33 | return success(); |
| 34 | } |
| 35 | }; |
| 36 | |
| 37 | class RemoveCstrEqOp : public OpRewritePattern<shape::CstrEqOp> { |
| 38 | public: |
| 39 | using OpRewritePattern::OpRewritePattern; |
| 40 | |
| 41 | LogicalResult matchAndRewrite(shape::CstrEqOp op, |
| 42 | PatternRewriter &rewriter) const override { |
| 43 | rewriter.replaceOpWithNewOp<shape::ConstWitnessOp>(op.getOperation(), true); |
| 44 | return success(); |
| 45 | } |
| 46 | }; |
| 47 | |
| 48 | /// Removal pass. |
| 49 | class RemoveShapeConstraintsPass |
| 50 | : public impl::RemoveShapeConstraintsBase<RemoveShapeConstraintsPass> { |
| 51 | |
| 52 | void runOnOperation() override { |
| 53 | MLIRContext &ctx = getContext(); |
| 54 | |
| 55 | RewritePatternSet patterns(&ctx); |
| 56 | populateRemoveShapeConstraintsPatterns(patterns); |
| 57 | |
| 58 | (void)applyPatternsAndFoldGreedily(getOperation(), std::move(patterns)); |
| 59 | } |
| 60 | }; |
| 61 | |
| 62 | } // namespace |
| 63 | |
| 64 | void mlir::populateRemoveShapeConstraintsPatterns(RewritePatternSet &patterns) { |
| 65 | patterns.add<RemoveCstrBroadcastableOp, RemoveCstrEqOp>( |
| 66 | arg: patterns.getContext()); |
| 67 | } |
| 68 | |
| 69 | std::unique_ptr<OperationPass<func::FuncOp>> |
| 70 | mlir::createRemoveShapeConstraintsPass() { |
| 71 | return std::make_unique<RemoveShapeConstraintsPass>(); |
| 72 | } |
| 73 |