src/mem/cache/prefetch/slim_ampm.cc

   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
  29 #include "mem/cache/prefetch/slim_ampm.hh"
  30
  31 #include "params/SlimAMPMPrefetcher.hh"
  32
  33 namespace Prefetcher {
  34
  35 SlimAMPM::SlimAMPM(const SlimAMPMPrefetcherParams* p)
  36   : Queued(p), ampm(*p->ampm), dcpt(*p->dcpt)
  37 {
  38 }
  39
  40 void
  41 SlimAMPM::calculatePrefetch(const PrefetchInfo &pfi,
  42                   std::vector<AddrPriority> &addresses)
  43 {
  44     dcpt.calculatePrefetch(pfi, addresses);
  45     if (addresses.empty()) {
  46         ampm.calculatePrefetch(pfi, addresses);
  47     }
  48 }
  49
  50 } // namespace Prefetcher
  51
  52 Prefetcher::SlimAMPM*
  53 SlimAMPMPrefetcherParams::create()
  54 {
  55     return new Prefetcher::SlimAMPM(this);
  56 }