ab47418df6
The bufferization of arith.constant ops is also switched over to BufferizableOpInterface-based bufferization. The old implementation is deleted. Both implementations utilize GlobalCreator, now renamed to just `getGlobalFor`. GlobalCreator no longer maintains a set of all created allocations to avoid duplicate allocations of the same constant. Instead, `getGlobalFor` scans the module to see if there is already a global allocation with the same constant value. For compatibility reasons, it is still possible to create a pass that bufferizes only `arith.constant`. This pass (createConstantBufferizePass) could be deleted once all users were switched over to One-Shot bufferization. Differential Revision: https://reviews.llvm.org/D118483
65 lines
2.2 KiB
C++
65 lines
2.2 KiB
C++
//===- Bufferize.cpp - Bufferization for Arithmetic ops ---------*- C++ -*-===//
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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 "PassDetail.h"
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#include "mlir/Dialect/Arithmetic/Transforms/BufferizableOpInterfaceImpl.h"
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#include "mlir/Dialect/Arithmetic/Transforms/Passes.h"
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#include "mlir/Dialect/Bufferization/IR/BufferizableOpInterface.h"
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#include "mlir/Dialect/Bufferization/IR/Bufferization.h"
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#include "mlir/Dialect/Bufferization/Transforms/Bufferize.h"
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#include "mlir/Dialect/MemRef/IR/MemRef.h"
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using namespace mlir;
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using namespace bufferization;
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namespace {
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/// Pass to bufferize Arithmetic ops.
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struct ArithmeticBufferizePass
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: public ArithmeticBufferizeBase<ArithmeticBufferizePass> {
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ArithmeticBufferizePass(uint64_t alignment = 0, bool constantOpOnly = false)
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: ArithmeticBufferizeBase<ArithmeticBufferizePass>(),
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constantOpOnly(constantOpOnly) {
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this->alignment = alignment;
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}
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void runOnOperation() override {
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std::unique_ptr<BufferizationOptions> options =
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getPartialBufferizationOptions();
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if (constantOpOnly) {
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options->addToOperationFilter<arith::ConstantOp>();
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} else {
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options->addToDialectFilter<arith::ArithmeticDialect>();
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}
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options->bufferAlignment = alignment;
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if (failed(bufferizeOp(getOperation(), *options)))
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signalPassFailure();
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}
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void getDependentDialects(DialectRegistry ®istry) const override {
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registry.insert<bufferization::BufferizationDialect, memref::MemRefDialect,
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arith::ArithmeticDialect>();
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arith::registerBufferizableOpInterfaceExternalModels(registry);
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}
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private:
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bool constantOpOnly;
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};
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} // namespace
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std::unique_ptr<Pass> mlir::arith::createArithmeticBufferizePass() {
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return std::make_unique<ArithmeticBufferizePass>();
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}
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std::unique_ptr<Pass>
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mlir::arith::createConstantBufferizePass(uint64_t alignment) {
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return std::make_unique<ArithmeticBufferizePass>(alignment,
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/*constantOpOnly=*/true);
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}
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