1//===- BufferViewFlowOpInterfaceImpl.cpp - Buffer View Flow Analysis ------===//
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/MemRef/Transforms/BufferViewFlowOpInterfaceImpl.h"
10
11#include "mlir/Dialect/Bufferization/IR/BufferViewFlowOpInterface.h"
12#include "mlir/Dialect/MemRef/IR/MemRef.h"
13
14using namespace mlir;
15using namespace mlir::bufferization;
16
17namespace mlir {
18namespace memref {
19namespace {
20
21struct ReallocOpInterface
22 : public BufferViewFlowOpInterface::ExternalModel<ReallocOpInterface,
23 ReallocOp> {
24 void
25 populateDependencies(Operation *op,
26 RegisterDependenciesFn registerDependenciesFn) const {
27 auto reallocOp = cast<ReallocOp>(op);
28 // memref.realloc may return the source operand.
29 registerDependenciesFn(reallocOp.getSource(), reallocOp.getResult());
30 }
31
32 bool mayBeTerminalBuffer(Operation *op, Value value) const {
33 // The return value of memref.realloc is a terminal buffer because the op
34 // may return a newly allocated buffer.
35 return true;
36 }
37};
38
39} // namespace
40} // namespace memref
41} // namespace mlir
42
43void memref::registerBufferViewFlowOpInterfaceExternalModels(
44 DialectRegistry &registry) {
45 registry.addExtension(extensionFn: +[](MLIRContext *ctx, memref::MemRefDialect *dialect) {
46 ReallocOp::attachInterface<ReallocOpInterface>(*ctx);
47 });
48}
49

source code of mlir/lib/Dialect/MemRef/Transforms/BufferViewFlowOpInterfaceImpl.cpp