1/**
2 * Copyright (c) 2018 Metempsy Technology Consulting
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions are
7 * met: redistributions of source code must retain the above copyright
8 * notice, this list of conditions and the following disclaimer;
9 * redistributions in binary form must reproduce the above copyright
10 * notice, this list of conditions and the following disclaimer in the
11 * documentation and/or other materials provided with the distribution;
12 * neither the name of the copyright holders nor the names of its
13 * contributors may be used to endorse or promote products derived from
14 * this software without specific prior written permission.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
17 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
18 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
19 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
20 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
21 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
22 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
26 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27 *
28 * Authors: Javier Bueno
29 */
30
31#ifndef __MEM_CACHE_PREFETCH_SLIM_AMPM_HH__
32#define __MEM_CACHE_PREFETCH_SLIM_AMPM_HH__
33
34#include "mem/cache/prefetch/access_map_pattern_matching.hh"
35#include "mem/cache/prefetch/delta_correlating_prediction_tables.hh"
36#include "mem/cache/prefetch/queued.hh"
37
38/**
39 * The SlimAMPM Prefetcher
40 * Reference:
41 *    Towards Bandwidth-Efficient Prefetching with Slim AMPM.
42 *    Young, Vinson, and A. Krishna.
43 *    The 2nd Data Prefetching Championship (2015).
44 *
45 * This prefetcher uses two other prefetchers, the AMPM and the DCPT.
46 */
47
48struct SlimAMPMPrefetcherParams;
49
50class SlimAMPMPrefetcher : public QueuedPrefetcher
51{
52   /** AMPM prefetcher object */
53   AccessMapPatternMatching &ampm;
54   /** DCPT prefetcher object */
55   DeltaCorrelatingPredictionTables &dcpt;
56 public:
57   SlimAMPMPrefetcher(const SlimAMPMPrefetcherParams *p);
58   ~SlimAMPMPrefetcher()
59   {}
60
61   void calculatePrefetch(const PrefetchInfo &pfi,
62                          std::vector<AddrPriority> &addresses) override;
63};
64#endif//__MEM_CACHE_PREFETCH_SLIM_AMPM_HH__
65