MLIR  20.0.0git
BufferViewFlowOpInterfaceImpl.cpp
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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 
10 
13 
14 using namespace mlir;
15 using namespace mlir::bufferization;
16 
17 namespace mlir {
18 namespace memref {
19 namespace {
20 
21 struct 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 
44  DialectRegistry &registry) {
45  registry.addExtension(+[](MLIRContext *ctx, memref::MemRefDialect *dialect) {
46  ReallocOp::attachInterface<ReallocOpInterface>(*ctx);
47  });
48 }
The DialectRegistry maps a dialect namespace to a constructor for the matching dialect.
bool addExtension(TypeID extensionID, std::unique_ptr< DialectExtensionBase > extension)
Add the given extension to the registry.
MLIRContext is the top-level object for a collection of MLIR operations.
Definition: MLIRContext.h:60
Operation is the basic unit of execution within MLIR.
Definition: Operation.h:88
This class represents an instance of an SSA value in the MLIR system, representing a computable value...
Definition: Value.h:96
std::function< void(ValueRange, ValueRange)> RegisterDependenciesFn
void registerBufferViewFlowOpInterfaceExternalModels(DialectRegistry &registry)
Include the generated interface declarations.