forked from OSchip/llvm-project
69 lines
2.2 KiB
C++
69 lines
2.2 KiB
C++
//===- AffineMapDetail.h - MLIR Affine Map details Class --------*- 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 AffineMap.
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//
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//===----------------------------------------------------------------------===//
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#ifndef AFFINEMAPDETAIL_H_
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#define AFFINEMAPDETAIL_H_
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#include "mlir/IR/AffineExpr.h"
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#include "mlir/IR/AffineMap.h"
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#include "mlir/Support/StorageUniquer.h"
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#include "llvm/ADT/ArrayRef.h"
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#include "llvm/Support/TrailingObjects.h"
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namespace mlir {
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namespace detail {
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struct AffineMapStorage final
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: public StorageUniquer::BaseStorage,
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public llvm::TrailingObjects<AffineMapStorage, AffineExpr> {
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/// The hash key used for uniquing.
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using KeyTy = std::tuple<unsigned, unsigned, ArrayRef<AffineExpr>>;
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unsigned numDims;
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unsigned numSymbols;
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unsigned numResults;
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MLIRContext *context;
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/// The affine expressions for this (multi-dimensional) map.
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ArrayRef<AffineExpr> results() const {
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return {getTrailingObjects<AffineExpr>(), numResults};
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}
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bool operator==(const KeyTy &key) const {
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return std::get<0>(key) == numDims && std::get<1>(key) == numSymbols &&
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std::get<2>(key) == results();
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}
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// Constructs an AffineMapStorage from a key. The context must be set by the
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// caller.
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static AffineMapStorage *
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construct(StorageUniquer::StorageAllocator &allocator, const KeyTy &key) {
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auto results = std::get<2>(key);
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auto byteSize =
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AffineMapStorage::totalSizeToAlloc<AffineExpr>(results.size());
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auto *rawMem = allocator.allocate(byteSize, alignof(AffineMapStorage));
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auto *res = new (rawMem) AffineMapStorage();
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res->numDims = std::get<0>(key);
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res->numSymbols = std::get<1>(key);
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res->numResults = results.size();
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std::uninitialized_copy(results.begin(), results.end(),
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res->getTrailingObjects<AffineExpr>());
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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 // AFFINEMAPDETAIL_H_
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