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//===- BufferViewFlowOpInterfaceImpl.cpp - Buffer View Flow Analysis ------===//
//
// 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/MemRef/Transforms/BufferViewFlowOpInterfaceImpl.h"
#include "mlir/Dialect/Bufferization/IR/BufferViewFlowOpInterface.h"
#include "mlir/Dialect/MemRef/IR/MemRef.h"
using namespace mlir;
using namespace mlir::bufferization;
namespace mlir {
namespace memref {
namespace {
struct ReallocOpInterface
: public BufferViewFlowOpInterface::ExternalModel<ReallocOpInterface,
ReallocOp> {
void
populateDependencies(Operation *op,
RegisterDependenciesFn registerDependenciesFn) const {
auto reallocOp = cast<ReallocOp>(op);
// memref.realloc may return the source operand.
registerDependenciesFn(reallocOp.getSource(), reallocOp.getResult());
}
bool mayBeTerminalBuffer(Operation *op, Value value) const {
// The return value of memref.realloc is a terminal buffer because the op
// may return a newly allocated buffer.
return true;
}
};
} // namespace
} // namespace memref
} // namespace mlir
void memref::registerBufferViewFlowOpInterfaceExternalModels(
DialectRegistry ®istry) {
registry.addExtension(+[](MLIRContext *ctx, memref::MemRefDialect *dialect) {
ReallocOp::attachInterface<ReallocOpInterface>(*ctx);
});
}
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