67 lines
2.4 KiB
C++
67 lines
2.4 KiB
C++
//===- ArithInterfaceImpl.cpp - Arith 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/Linalg/ComprehensiveBufferize/ArithInterfaceImpl.h"
|
|
|
|
#include "mlir/Dialect/Arithmetic/IR/Arithmetic.h"
|
|
#include "mlir/Dialect/Linalg/ComprehensiveBufferize/BufferizableOpInterface.h"
|
|
#include "mlir/Dialect/MemRef/IR/MemRef.h"
|
|
#include "mlir/IR/Dialect.h"
|
|
#include "mlir/IR/Operation.h"
|
|
#include "mlir/Transforms/BufferUtils.h"
|
|
|
|
namespace mlir {
|
|
namespace linalg {
|
|
namespace comprehensive_bufferize {
|
|
namespace arith_ext {
|
|
|
|
/// Bufferization of arith.constant. Replace with memref.get_global.
|
|
struct ConstantOpInterface
|
|
: public BufferizableOpInterface::ExternalModel<ConstantOpInterface,
|
|
arith::ConstantOp> {
|
|
LogicalResult bufferize(Operation *op, RewriterBase &rewriter,
|
|
const BufferizationState &state) const {
|
|
auto constantOp = cast<arith::ConstantOp>(op);
|
|
|
|
// Only ranked tensors are supported.
|
|
if (!constantOp.getType().isa<RankedTensorType>())
|
|
return failure();
|
|
|
|
// Only constants inside a module are supported.
|
|
auto moduleOp = constantOp->getParentOfType<ModuleOp>();
|
|
if (!moduleOp)
|
|
return failure();
|
|
|
|
// Create global memory segment and replace tensor with memref pointing to
|
|
// that memory segment.
|
|
GlobalCreator globalCreator(moduleOp);
|
|
auto globalMemref = globalCreator.getGlobalFor(constantOp);
|
|
replaceOpWithNewBufferizedOp<memref::GetGlobalOp>(
|
|
rewriter, op, globalMemref.type(), globalMemref.getName());
|
|
|
|
return success();
|
|
}
|
|
|
|
bool isWritable(Operation *op, Value value,
|
|
const BufferizationState &state) const {
|
|
// Memory locations returned by memref::GetGlobalOp may not be written to.
|
|
assert(value.isa<OpResult>());
|
|
return false;
|
|
}
|
|
};
|
|
|
|
} // namespace arith_ext
|
|
} // namespace comprehensive_bufferize
|
|
} // namespace linalg
|
|
} // namespace mlir
|
|
|
|
void mlir::linalg::comprehensive_bufferize::arith_ext::
|
|
registerBufferizableOpInterfaceExternalModels(DialectRegistry ®istry) {
|
|
registry.addOpInterface<arith::ConstantOp, arith_ext::ConstantOpInterface>();
|
|
}
|