forked from OSchip/llvm-project
58 lines
1.9 KiB
C++
58 lines
1.9 KiB
C++
//===- IntegerSetDetail.h - MLIR IntegerSet storage details -----*- C++ -*-===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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//
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// This holds implementation details of IntegerSet.
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//
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//===----------------------------------------------------------------------===//
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#ifndef INTEGERSETDETAIL_H_
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#define INTEGERSETDETAIL_H_
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#include "mlir/IR/AffineExpr.h"
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#include "mlir/Support/StorageUniquer.h"
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#include "llvm/ADT/ArrayRef.h"
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namespace mlir {
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namespace detail {
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struct IntegerSetStorage : public StorageUniquer::BaseStorage {
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/// The hash key used for uniquing.
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using KeyTy =
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std::tuple<unsigned, unsigned, ArrayRef<AffineExpr>, ArrayRef<bool>>;
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unsigned dimCount;
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unsigned symbolCount;
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/// Array of affine constraints: a constraint is either an equality
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/// (affine_expr == 0) or an inequality (affine_expr >= 0).
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ArrayRef<AffineExpr> constraints;
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// Bits to check whether a constraint is an equality or an inequality.
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ArrayRef<bool> eqFlags;
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bool operator==(const KeyTy &key) const {
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return std::get<0>(key) == dimCount && std::get<1>(key) == symbolCount &&
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std::get<2>(key) == constraints && std::get<3>(key) == eqFlags;
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}
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static IntegerSetStorage *
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construct(StorageUniquer::StorageAllocator &allocator, const KeyTy &key) {
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auto *res =
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new (allocator.allocate<IntegerSetStorage>()) IntegerSetStorage();
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res->dimCount = std::get<0>(key);
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res->symbolCount = std::get<1>(key);
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res->constraints = allocator.copyInto(std::get<2>(key));
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res->eqFlags = allocator.copyInto(std::get<3>(key));
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return res;
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}
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};
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} // namespace detail
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} // namespace mlir
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#endif // INTEGERSETDETAIL_H_
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