gem5  v20.1.0.0
fetch_stage.hh
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33 
34 #ifndef __FETCH_STAGE_HH__
35 #define __FETCH_STAGE_HH__
36 
37 #include <string>
38 #include <vector>
39 
41 
42 // Instruction fetch stage.
43 // All dispatched wavefronts for all SIMDS are analyzed for the
44 // need to fetch instructions. From the fetch eligible waves,
45 // one wave is selected from each SIMD and fetch is initiated
46 // for the selected waves.
47 
48 class ComputeUnit;
49 class Wavefront;
50 
52 {
53  public:
54  FetchStage(const ComputeUnitParams* p, ComputeUnit &cu);
55  ~FetchStage();
56  void init();
57  void exec();
58  void processFetchReturn(PacketPtr pkt);
59  void fetch(PacketPtr pkt, Wavefront *wave);
60 
61  // Stats related variables and methods
62  const std::string& name() const { return _name; }
63  void regStats();
65  FetchUnit &fetchUnit(int simdId) { return _fetchUnit.at(simdId); }
66 
67  private:
70 
71  // List of fetch units. A fetch unit is
72  // instantiated per VALU/SIMD
74  const std::string _name;
75 };
76 
77 #endif // __FETCH_STAGE_HH__
FetchStage::~FetchStage
~FetchStage()
Definition: fetch_stage.cc:49
FetchStage::instFetchInstReturned
Stats::Distribution instFetchInstReturned
Definition: fetch_stage.hh:64
FetchStage
Definition: fetch_stage.hh:51
FetchStage::_name
const std::string _name
Definition: fetch_stage.hh:74
std::vector< FetchUnit >
fetch_unit.hh
FetchStage::FetchStage
FetchStage(const ComputeUnitParams *p, ComputeUnit &cu)
Definition: fetch_stage.cc:39
FetchStage::numVectorALUs
int numVectorALUs
Definition: fetch_stage.hh:68
ComputeUnit
Definition: compute_unit.hh:198
FetchStage::init
void init()
Definition: fetch_stage.cc:55
FetchUnit
Definition: fetch_unit.hh:49
FetchStage::_fetchUnit
std::vector< FetchUnit > _fetchUnit
Definition: fetch_stage.hh:73
FetchStage::exec
void exec()
Definition: fetch_stage.cc:64
FetchStage::fetchUnit
FetchUnit & fetchUnit(int simdId)
Definition: fetch_stage.hh:65
Stats::Distribution
A simple distribution stat.
Definition: statistics.hh:2617
FetchStage::name
const std::string & name() const
Definition: fetch_stage.hh:62
Wavefront
Definition: wavefront.hh:57
FetchStage::computeUnit
ComputeUnit & computeUnit
Definition: fetch_stage.hh:69
Packet
A Packet is used to encapsulate a transfer between two objects in the memory system (e....
Definition: packet.hh:257
FetchStage::fetch
void fetch(PacketPtr pkt, Wavefront *wave)
Definition: fetch_stage.cc:88
FetchStage::regStats
void regStats()
Definition: fetch_stage.cc:94
FetchStage::processFetchReturn
void processFetchReturn(PacketPtr pkt)
Definition: fetch_stage.cc:72
MipsISA::p
Bitfield< 0 > p
Definition: pra_constants.hh:323

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