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//===- BufferizableOpInterfaceImpl.cpp - Impl. of BufferizableOpInterface -===//
//
// 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/BufferizableOpInterfaceImpl.h"
#include "mlir/Dialect/Bufferization/IR/BufferizableOpInterface.h"
#include "mlir/Dialect/MemRef/IR/MemRef.h"
#include "mlir/IR/Dialect.h"
#include "mlir/IR/Operation.h"
using namespace mlir;
using namespace mlir::bufferization;
namespace {
/// Bufferization of memref.tensor_store. Replace with memref.copy.
struct TensorStoreOpInterface
: public BufferizableOpInterface::ExternalModel<TensorStoreOpInterface,
memref::TensorStoreOp> {
AliasingOpResultList getAliasingOpResults(Operation *op, OpOperand &opOperand,
const AnalysisState &state) const {
return {};
}
bool bufferizesToMemoryRead(Operation *op, OpOperand &opOperand,
const AnalysisState &state) const {
assert(opOperand.getOperandNumber() == 0 && "expected src operand");
return true;
}
bool bufferizesToMemoryWrite(Operation *op, OpOperand &opOperand,
const AnalysisState &state) const {
// The memref operand is written but not the tensor operand.
assert(opOperand.getOperandNumber() == 0 && "expected src operand");
return false;
}
LogicalResult bufferize(Operation *op, RewriterBase &rewriter,
const BufferizationOptions &options) const {
auto tensorStoreOp = cast<memref::TensorStoreOp>(op);
auto srcBuffer = getBuffer(rewriter, tensorStoreOp.getTensor(), options);
if (failed(srcBuffer))
return failure();
if (failed(options.createMemCpy(rewriter, op->getLoc(), *srcBuffer,
tensorStoreOp.getMemref())))
return failure();
rewriter.eraseOp(tensorStoreOp);
return success();
}
};
} // namespace
void mlir::memref::registerBufferizableOpInterfaceExternalModels(
DialectRegistry ®istry) {
registry.addExtension(+[](MLIRContext *ctx, MemRefDialect *dialect) {
TensorStoreOp::attachInterface<TensorStoreOpInterface>(*ctx);
});
}
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