74 lines
2.7 KiB
C++
74 lines
2.7 KiB
C++
//===- ArithInterfaceImpl.cpp - Arith Impl. of BufferizableOpInterface ----===//
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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 "mlir/Dialect/Linalg/ComprehensiveBufferize/ArithInterfaceImpl.h"
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#include "mlir/Dialect/Arithmetic/IR/Arithmetic.h"
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#include "mlir/Dialect/Linalg/ComprehensiveBufferize/BufferizableOpInterface.h"
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#include "mlir/Dialect/MemRef/IR/MemRef.h"
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#include "mlir/IR/Dialect.h"
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#include "mlir/IR/Operation.h"
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#include "mlir/Transforms/BufferUtils.h"
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namespace mlir {
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namespace linalg {
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namespace comprehensive_bufferize {
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namespace arith_ext {
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struct ConstantOpInterface
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: public BufferizableOpInterface::ExternalModel<ConstantOpInterface,
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arith::ConstantOp> {
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SmallVector<OpOperand *> getAliasingOpOperand(Operation *op,
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OpResult opResult) const {
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return {};
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}
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LogicalResult bufferize(Operation *op, OpBuilder &b,
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BufferizationState &state) const {
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auto constantOp = cast<arith::ConstantOp>(op);
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if (!constantOp.getResult().getType().isa<TensorType>())
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return success();
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assert(constantOp.getType().dyn_cast<RankedTensorType>() &&
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"not a constant ranked tensor");
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auto moduleOp = constantOp->getParentOfType<ModuleOp>();
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if (!moduleOp) {
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return constantOp.emitError(
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"cannot bufferize constants not within builtin.module op");
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}
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GlobalCreator globalCreator(moduleOp);
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// Take a guard before anything else.
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OpBuilder::InsertionGuard g(b);
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b.setInsertionPoint(constantOp);
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auto globalMemref = globalCreator.getGlobalFor(constantOp);
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Value memref = b.create<memref::GetGlobalOp>(
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constantOp.getLoc(), globalMemref.type(), globalMemref.getName());
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state.aliasInfo.insertNewBufferEquivalence(memref, constantOp.getResult());
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state.mapBuffer(constantOp, memref);
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return success();
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}
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bool isWritable(Operation *op, Value value) const {
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// Memory locations returned by memref::GetGlobalOp may not be written to.
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assert(value.isa<OpResult>());
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return false;
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}
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};
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} // namespace arith_ext
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} // namespace comprehensive_bufferize
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} // namespace linalg
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} // namespace mlir
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void mlir::linalg::comprehensive_bufferize::arith_ext::
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registerBufferizableOpInterfaceExternalModels(DialectRegistry ®istry) {
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registry.addOpInterface<arith::ConstantOp, arith_ext::ConstantOpInterface>();
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}
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