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//===----------------------------------------------------------------------===//
//
// 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/Arith/IR/Arith.h"
#include "mlir/Dialect/MemRef/IR/MemRef.h"
#include "mlir/Interfaces/SideEffectInterfaces.h"
#include "mlir/Transforms/InliningUtils.h"
#include <optional>
using namespace mlir;
using namespace mlir::memref;
#include "mlir/Dialect/MemRef/IR/MemRefOpsDialect.cpp.inc"
//===----------------------------------------------------------------------===//
// MemRefDialect Dialect Interfaces
//===----------------------------------------------------------------------===//
namespace {
struct MemRefInlinerInterface : public DialectInlinerInterface {
using DialectInlinerInterface::DialectInlinerInterface;
bool isLegalToInline(Region *dest, Region *src, bool wouldBeCloned,
IRMapping &valueMapping) const final {
return true;
}
bool isLegalToInline(Operation *, Region *, bool wouldBeCloned,
IRMapping &) const final {
return true;
}
};
} // namespace
void mlir::memref::MemRefDialect::initialize() {
addOperations<
#define GET_OP_LIST
#include "mlir/Dialect/MemRef/IR/MemRefOps.cpp.inc"
>();
addInterfaces<MemRefInlinerInterface>();
}
/// Finds the unique dealloc operation (if one exists) for `allocValue`.
std::optional<Operation *> mlir::memref::findDealloc(Value allocValue) {
Operation *dealloc = nullptr;
for (Operation *user : allocValue.getUsers()) {
if (!hasEffect<MemoryEffects::Free>(user, allocValue))
continue;
// If we found a realloc instead of dealloc, return std::nullopt.
if (isa<memref::ReallocOp>(user))
return std::nullopt;
// If we found > 1 dealloc, return std::nullopt.
if (dealloc)
return std::nullopt;
dealloc = user;
}
return dealloc;
}
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