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//===-- RemoveShapeConstraints.cpp - Remove Shape Cstr and Assuming 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
//
//===----------------------------------------------------------------------===//
#include "mlir/Dialect/Shape/Transforms/Passes.h"
#include "mlir/Dialect/Func/IR/FuncOps.h"
#include "mlir/Dialect/Shape/IR/Shape.h"
#include "mlir/Transforms/DialectConversion.h"
#include "mlir/Transforms/GreedyPatternRewriteDriver.h"
namespace mlir {
#define GEN_PASS_DEF_REMOVESHAPECONSTRAINTS
#include "mlir/Dialect/Shape/Transforms/Passes.h.inc"
} // namespace mlir
using namespace mlir;
namespace {
/// Removal patterns.
class RemoveCstrBroadcastableOp
: public OpRewritePattern<shape::CstrBroadcastableOp> {
public:
using OpRewritePattern::OpRewritePattern;
LogicalResult matchAndRewrite(shape::CstrBroadcastableOp op,
PatternRewriter &rewriter) const override {
rewriter.replaceOpWithNewOp<shape::ConstWitnessOp>(op.getOperation(), true);
return success();
}
};
class RemoveCstrEqOp : public OpRewritePattern<shape::CstrEqOp> {
public:
using OpRewritePattern::OpRewritePattern;
LogicalResult matchAndRewrite(shape::CstrEqOp op,
PatternRewriter &rewriter) const override {
rewriter.replaceOpWithNewOp<shape::ConstWitnessOp>(op.getOperation(), true);
return success();
}
};
/// Removal pass.
class RemoveShapeConstraintsPass
: public impl::RemoveShapeConstraintsBase<RemoveShapeConstraintsPass> {
void runOnOperation() override {
MLIRContext &ctx = getContext();
RewritePatternSet patterns(&ctx);
populateRemoveShapeConstraintsPatterns(patterns);
(void)applyPatternsAndFoldGreedily(getOperation(), std::move(patterns));
}
};
} // namespace
void mlir::populateRemoveShapeConstraintsPatterns(RewritePatternSet &patterns) {
patterns.add<RemoveCstrBroadcastableOp, RemoveCstrEqOp>(
patterns.getContext());
}
std::unique_ptr<OperationPass<func::FuncOp>>
mlir::createRemoveShapeConstraintsPass() {
return std::make_unique<RemoveShapeConstraintsPass>();
}
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