| 1 | //===-- RemoveShapeConstraints.cpp - Remove Shape Cstr and Assuming Ops ---===// |
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| 2 | // |
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| 3 | // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
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| 4 | // See https://llvm.org/LICENSE.txt for license information. |
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| 5 | // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
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| 6 | // |
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| 7 | //===----------------------------------------------------------------------===// |
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| 8 | |
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| 9 | #include "mlir/Dialect/Shape/Transforms/Passes.h" |
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| 10 | |
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| 11 | #include "mlir/Dialect/Func/IR/FuncOps.h" |
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| 12 | #include "mlir/Dialect/Shape/IR/Shape.h" |
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| 13 | #include "mlir/Transforms/DialectConversion.h" |
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| 14 | #include "mlir/Transforms/GreedyPatternRewriteDriver.h" |
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| 15 | |
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| 16 | namespace mlir { |
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| 17 | #define GEN_PASS_DEF_REMOVESHAPECONSTRAINTSPASS |
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| 18 | #include "mlir/Dialect/Shape/Transforms/Passes.h.inc" |
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| 19 | } // namespace mlir |
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| 20 | |
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| 21 | using namespace mlir; |
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| 22 | |
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| 23 | namespace { |
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| 24 | /// Removal patterns. |
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| 25 | class RemoveCstrBroadcastableOp |
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| 26 | : public OpRewritePattern<shape::CstrBroadcastableOp> { |
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| 27 | public: |
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| 28 | using OpRewritePattern::OpRewritePattern; |
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| 29 | |
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| 30 | LogicalResult matchAndRewrite(shape::CstrBroadcastableOp op, |
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| 31 | PatternRewriter &rewriter) const override { |
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| 32 | rewriter.replaceOpWithNewOp<shape::ConstWitnessOp>(op.getOperation(), true); |
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| 33 | return success(); |
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| 34 | } |
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| 35 | }; |
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| 36 | |
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| 37 | class RemoveCstrEqOp : public OpRewritePattern<shape::CstrEqOp> { |
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| 38 | public: |
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| 39 | using OpRewritePattern::OpRewritePattern; |
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| 40 | |
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| 41 | LogicalResult matchAndRewrite(shape::CstrEqOp op, |
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| 42 | PatternRewriter &rewriter) const override { |
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| 43 | rewriter.replaceOpWithNewOp<shape::ConstWitnessOp>(op.getOperation(), true); |
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| 44 | return success(); |
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| 45 | } |
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| 46 | }; |
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| 47 | |
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| 48 | /// Removal pass. |
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| 49 | class RemoveShapeConstraintsPass |
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| 50 | : public impl::RemoveShapeConstraintsPassBase<RemoveShapeConstraintsPass> { |
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| 51 | |
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| 52 | void runOnOperation() override { |
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| 53 | MLIRContext &ctx = getContext(); |
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| 54 | |
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| 55 | RewritePatternSet patterns(&ctx); |
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| 56 | populateRemoveShapeConstraintsPatterns(patterns); |
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| 57 | |
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| 58 | (void)applyPatternsGreedily(getOperation(), std::move(patterns)); |
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| 59 | } |
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| 60 | }; |
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| 61 | |
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| 62 | } // namespace |
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| 63 | |
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| 64 | void mlir::populateRemoveShapeConstraintsPatterns(RewritePatternSet &patterns) { |
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| 65 | patterns.add<RemoveCstrBroadcastableOp, RemoveCstrEqOp>( |
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| 66 | arg: patterns.getContext()); |
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| 67 | } |
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| 68 | |
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