stride.hh (13426:d2b0e9ec67f1) | stride.hh (13427:72a3afac3e78) |
---|---|
1/* | 1/* |
2 * Copyright (c) 2018 Inria |
|
2 * Copyright (c) 2012-2013, 2015 ARM Limited 3 * All rights reserved 4 * 5 * The license below extends only to copyright in the software and shall 6 * not be construed as granting a license to any other intellectual 7 * property including but not limited to intellectual property relating 8 * to a hardware implementation of the functionality of the software 9 * licensed hereunder. You may use the software subject to the license --- 23 unchanged lines hidden (view full) --- 33 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 34 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 35 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 36 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 37 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 38 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 39 * 40 * Authors: Ron Dreslinski | 3 * Copyright (c) 2012-2013, 2015 ARM Limited 4 * All rights reserved 5 * 6 * The license below extends only to copyright in the software and shall 7 * not be construed as granting a license to any other intellectual 8 * property including but not limited to intellectual property relating 9 * to a hardware implementation of the functionality of the software 10 * licensed hereunder. You may use the software subject to the license --- 23 unchanged lines hidden (view full) --- 34 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 35 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 36 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 37 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 38 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 39 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 40 * 41 * Authors: Ron Dreslinski |
42 * Daniel Carvalho |
|
41 */ 42 43/** 44 * @file 45 * Describes a strided prefetcher. 46 */ 47 48#ifndef __MEM_CACHE_PREFETCH_STRIDE_HH__ 49#define __MEM_CACHE_PREFETCH_STRIDE_HH__ 50 51#include <string> 52#include <unordered_map> 53#include <vector> 54 55#include "base/types.hh" 56#include "mem/cache/prefetch/queued.hh" | 43 */ 44 45/** 46 * @file 47 * Describes a strided prefetcher. 48 */ 49 50#ifndef __MEM_CACHE_PREFETCH_STRIDE_HH__ 51#define __MEM_CACHE_PREFETCH_STRIDE_HH__ 52 53#include <string> 54#include <unordered_map> 55#include <vector> 56 57#include "base/types.hh" 58#include "mem/cache/prefetch/queued.hh" |
59#include "mem/cache/replacement_policies/replaceable_entry.hh" |
|
57#include "mem/packet.hh" 58 | 60#include "mem/packet.hh" 61 |
62class BaseReplacementPolicy; |
|
59struct StridePrefetcherParams; 60 61class StridePrefetcher : public QueuedPrefetcher 62{ 63 protected: 64 const int maxConf; 65 const int threshConf; 66 const int minConf; 67 const int startConf; 68 69 const int pcTableAssoc; 70 const int pcTableSets; 71 72 const bool useMasterId; 73 74 const int degree; 75 | 63struct StridePrefetcherParams; 64 65class StridePrefetcher : public QueuedPrefetcher 66{ 67 protected: 68 const int maxConf; 69 const int threshConf; 70 const int minConf; 71 const int startConf; 72 73 const int pcTableAssoc; 74 const int pcTableSets; 75 76 const bool useMasterId; 77 78 const int degree; 79 |
76 struct StrideEntry | 80 /** Replacement policy used in the PC tables. */ 81 BaseReplacementPolicy* replacementPolicy; 82 83 struct StrideEntry : public ReplaceableEntry |
77 { 78 /** Default constructor */ 79 StrideEntry(); 80 81 /** Invalidate the entry */ 82 void invalidate(); 83 84 Addr instAddr; --- 7 unchanged lines hidden (view full) --- 92 { 93 public: 94 /** 95 * Default constructor. Create a table with given parameters. 96 * 97 * @param assoc Associativity of the table. 98 * @param sets Number of sets in the table. 99 * @param name Name of the prefetcher. | 84 { 85 /** Default constructor */ 86 StrideEntry(); 87 88 /** Invalidate the entry */ 89 void invalidate(); 90 91 Addr instAddr; --- 7 unchanged lines hidden (view full) --- 99 { 100 public: 101 /** 102 * Default constructor. Create a table with given parameters. 103 * 104 * @param assoc Associativity of the table. 105 * @param sets Number of sets in the table. 106 * @param name Name of the prefetcher. |
107 * @param replacementPolicy Replacement policy used by the table. |
|
100 */ | 108 */ |
101 PCTable(int assoc, int sets, const std::string name); | 109 PCTable(int assoc, int sets, const std::string name, 110 BaseReplacementPolicy* replacementPolicy); |
102 103 /** 104 * Default destructor. 105 */ 106 ~PCTable(); 107 108 /** 109 * Search for an entry in the pc table. --- 9 unchanged lines hidden (view full) --- 119 * 120 * @param pc The PC value. 121 * @return The victimized entry. 122 */ 123 StrideEntry* findVictim(Addr pc); 124 125 private: 126 const std::string name() {return _name; } | 111 112 /** 113 * Default destructor. 114 */ 115 ~PCTable(); 116 117 /** 118 * Search for an entry in the pc table. --- 9 unchanged lines hidden (view full) --- 128 * 129 * @param pc The PC value. 130 * @return The victimized entry. 131 */ 132 StrideEntry* findVictim(Addr pc); 133 134 private: 135 const std::string name() {return _name; } |
127 const int pcTableAssoc; | |
128 const int pcTableSets; 129 const std::string _name; 130 std::vector<std::vector<StrideEntry>> entries; 131 132 /** | 136 const int pcTableSets; 137 const std::string _name; 138 std::vector<std::vector<StrideEntry>> entries; 139 140 /** |
141 * Replacement policy used by StridePrefetcher. 142 */ 143 BaseReplacementPolicy* replacementPolicy; 144 145 /** |
|
133 * PC hashing function to index sets in the table. 134 * 135 * @param pc The PC value. 136 * @return The set to which this PC maps. 137 */ 138 Addr pcHash(Addr pc) const; 139 }; 140 std::unordered_map<int, PCTable> pcTables; --- 26 unchanged lines hidden --- | 146 * PC hashing function to index sets in the table. 147 * 148 * @param pc The PC value. 149 * @return The set to which this PC maps. 150 */ 151 Addr pcHash(Addr pc) const; 152 }; 153 std::unordered_map<int, PCTable> pcTables; --- 26 unchanged lines hidden --- |