Gabe Black has uploaded this change for review. ( https://gem5-review.googlesource.com/c/public/gem5/+/42103 )

Change subject: cpu: Remove comm types from O3CPUImpl.
......................................................................

cpu: Remove comm types from O3CPUImpl.

This struct is now empty, although we still need to keep it until all
the types within O3 have been de-templated and no longer need a template
argument.

Change-Id: I3889bdbb1b8d638f7b04e5bfb7698e35eb7f2e57
---
M src/cpu/o3/comm.hh
M src/cpu/o3/commit.hh
M src/cpu/o3/commit_impl.hh
M src/cpu/o3/cpu.hh
M src/cpu/o3/decode.hh
M src/cpu/o3/decode_impl.hh
M src/cpu/o3/fetch.hh
M src/cpu/o3/fetch_impl.hh
M src/cpu/o3/iew.hh
M src/cpu/o3/iew_impl.hh
M src/cpu/o3/impl.hh
M src/cpu/o3/inst_queue.hh
M src/cpu/o3/inst_queue_impl.hh
M src/cpu/o3/lsq_unit.hh
M src/cpu/o3/probe/elastic_trace.hh
M src/cpu/o3/rename.hh
M src/cpu/o3/rename_impl.hh
17 files changed, 110 insertions(+), 168 deletions(-)



diff --git a/src/cpu/o3/comm.hh b/src/cpu/o3/comm.hh
index eb85e5e..c35c2bd 100644
--- a/src/cpu/o3/comm.hh
+++ b/src/cpu/o3/comm.hh
@@ -51,9 +51,11 @@
 #include "cpu/o3/limits.hh"
 #include "sim/faults.hh"

+namespace O3Comm
+{
+
 /** Struct that defines the information passed from fetch to decode. */
-template<class Impl>
-struct DefaultFetchDefaultDecode
+struct FetchStruct
 {
     int size;

@@ -64,8 +66,7 @@
 };

 /** Struct that defines the information passed from decode to rename. */
-template<class Impl>
-struct DefaultDecodeDefaultRename
+struct DecodeStruct
 {
     int size;

@@ -73,8 +74,7 @@
 };

 /** Struct that defines the information passed from rename to IEW. */
-template<class Impl>
-struct DefaultRenameDefaultIEW
+struct RenameStruct
 {
     int size;

@@ -82,8 +82,7 @@
 };

 /** Struct that defines the information passed from IEW to commit. */
-template<class Impl>
-struct DefaultIEWDefaultCommit
+struct IEWStruct
 {
     int size;

@@ -99,7 +98,6 @@
     bool includeSquashInst[O3MaxThreads];
 };

-template<class Impl>
 struct IssueStruct
 {
     int size;
@@ -108,8 +106,7 @@
 };

 /** Struct that defines all backwards communication. */
-template<class Impl>
-struct TimeBufStruct
+struct TimeStruct
 {
     struct DecodeComm
     {
@@ -225,4 +222,6 @@
     bool iewUnblock[O3MaxThreads];
 };

+} // namespace O3Comm
+
 #endif //__CPU_O3_COMM_HH__
diff --git a/src/cpu/o3/commit.hh b/src/cpu/o3/commit.hh
index 312d7a7..35223d6 100644
--- a/src/cpu/o3/commit.hh
+++ b/src/cpu/o3/commit.hh
@@ -46,6 +46,7 @@
 #include "base/statistics.hh"
 #include "cpu/exetrace.hh"
 #include "cpu/inst_seq.hh"
+#include "cpu/o3/comm.hh"
 #include "cpu/o3/dyn_inst_ptr.hh"
 #include "cpu/o3/iew.hh"
 #include "cpu/o3/limits.hh"
@@ -86,12 +87,6 @@
 class DefaultCommit
 {
   public:
-    // Typedefs from the Impl.
-    typedef typename Impl::TimeStruct TimeStruct;
-    typedef typename Impl::FetchStruct FetchStruct;
-    typedef typename Impl::IEWStruct IEWStruct;
-    typedef typename Impl::RenameStruct RenameStruct;
-
     typedef O3ThreadState<Impl> Thread;

     /** Overall commit status. Used to determine if the CPU can deschedule
@@ -145,15 +140,15 @@
     void setThreads(std::vector<Thread *> &threads);

/** Sets the main time buffer pointer, used for backwards communication. */
-    void setTimeBuffer(TimeBuffer<TimeStruct> *tb_ptr);
+    void setTimeBuffer(TimeBuffer<O3Comm::TimeStruct> *tb_ptr);

-    void setFetchQueue(TimeBuffer<FetchStruct> *fq_ptr);
+    void setFetchQueue(TimeBuffer<O3Comm::FetchStruct> *fq_ptr);

     /** Sets the pointer to the queue coming from rename. */
-    void setRenameQueue(TimeBuffer<RenameStruct> *rq_ptr);
+    void setRenameQueue(TimeBuffer<O3Comm::RenameStruct> *rq_ptr);

     /** Sets the pointer to the queue coming from IEW. */
-    void setIEWQueue(TimeBuffer<IEWStruct> *iq_ptr);
+    void setIEWQueue(TimeBuffer<O3Comm::IEWStruct> *iq_ptr);

     /** Sets the pointer to the IEW stage. */
     void setIEWStage(DefaultIEW<Impl> *iew_stage);
@@ -324,29 +319,29 @@

   private:
     /** Time buffer interface. */
-    TimeBuffer<TimeStruct> *timeBuffer;
+    TimeBuffer<O3Comm::TimeStruct> *timeBuffer;

     /** Wire to write information heading to previous stages. */
-    typename TimeBuffer<TimeStruct>::wire toIEW;
+    typename TimeBuffer<O3Comm::TimeStruct>::wire toIEW;

     /** Wire to read information from IEW (for ROB). */
-    typename TimeBuffer<TimeStruct>::wire robInfoFromIEW;
+    typename TimeBuffer<O3Comm::TimeStruct>::wire robInfoFromIEW;

-    TimeBuffer<FetchStruct> *fetchQueue;
+    TimeBuffer<O3Comm::FetchStruct> *fetchQueue;

-    typename TimeBuffer<FetchStruct>::wire fromFetch;
+    typename TimeBuffer<O3Comm::FetchStruct>::wire fromFetch;

     /** IEW instruction queue interface. */
-    TimeBuffer<IEWStruct> *iewQueue;
+    TimeBuffer<O3Comm::IEWStruct> *iewQueue;

     /** Wire to read information from IEW queue. */
-    typename TimeBuffer<IEWStruct>::wire fromIEW;
+    typename TimeBuffer<O3Comm::IEWStruct>::wire fromIEW;

     /** Rename instruction queue interface, for ROB. */
-    TimeBuffer<RenameStruct> *renameQueue;
+    TimeBuffer<O3Comm::RenameStruct> *renameQueue;

     /** Wire to read information from rename queue. */
-    typename TimeBuffer<RenameStruct>::wire fromRename;
+    typename TimeBuffer<O3Comm::RenameStruct>::wire fromRename;

   public:
     /** ROB interface. */
diff --git a/src/cpu/o3/commit_impl.hh b/src/cpu/o3/commit_impl.hh
index ad037c8..8e73e39 100644
--- a/src/cpu/o3/commit_impl.hh
+++ b/src/cpu/o3/commit_impl.hh
@@ -253,7 +253,7 @@

 template <class Impl>
 void
-DefaultCommit<Impl>::setTimeBuffer(TimeBuffer<TimeStruct> *tb_ptr)
+DefaultCommit<Impl>::setTimeBuffer(TimeBuffer<O3Comm::TimeStruct> *tb_ptr)
 {
     timeBuffer = tb_ptr;

@@ -266,7 +266,7 @@

 template <class Impl>
 void
-DefaultCommit<Impl>::setFetchQueue(TimeBuffer<FetchStruct> *fq_ptr)
+DefaultCommit<Impl>::setFetchQueue(TimeBuffer<O3Comm::FetchStruct> *fq_ptr)
 {
     fetchQueue = fq_ptr;

@@ -276,7 +276,7 @@

 template <class Impl>
 void
-DefaultCommit<Impl>::setRenameQueue(TimeBuffer<RenameStruct> *rq_ptr)
+DefaultCommit<Impl>::setRenameQueue(TimeBuffer<O3Comm::RenameStruct> *rq_ptr)
 {
     renameQueue = rq_ptr;

@@ -286,7 +286,7 @@

 template <class Impl>
 void
-DefaultCommit<Impl>::setIEWQueue(TimeBuffer<IEWStruct> *iq_ptr)
+DefaultCommit<Impl>::setIEWQueue(TimeBuffer<O3Comm::IEWStruct> *iq_ptr)
 {
     iewQueue = iq_ptr;

diff --git a/src/cpu/o3/cpu.hh b/src/cpu/o3/cpu.hh
index cc824d5..f1f2a17 100644
--- a/src/cpu/o3/cpu.hh
+++ b/src/cpu/o3/cpu.hh
@@ -594,41 +594,30 @@
      *  activateStage() or deactivateStage(), they can specify which stage
      *  is being activated/deactivated.
      */
-    enum StageIdx {
+    enum StageIdx
+    {
         FetchIdx,
         DecodeIdx,
         RenameIdx,
         IEWIdx,
         CommitIdx,
-        NumStages };
-
-    /** Typedefs from the Impl to get the structs that each of the
-     *  time buffers should use.
-     */
-    typedef typename Impl::TimeStruct TimeStruct;
-
-    typedef typename Impl::FetchStruct FetchStruct;
-
-    typedef typename Impl::DecodeStruct DecodeStruct;
-
-    typedef typename Impl::RenameStruct RenameStruct;
-
-    typedef typename Impl::IEWStruct IEWStruct;
+        NumStages
+    };

     /** The main time buffer to do backwards communication. */
-    TimeBuffer<TimeStruct> timeBuffer;
+    TimeBuffer<O3Comm::TimeStruct> timeBuffer;

     /** The fetch stage's instruction queue. */
-    TimeBuffer<FetchStruct> fetchQueue;
+    TimeBuffer<O3Comm::FetchStruct> fetchQueue;

     /** The decode stage's instruction queue. */
-    TimeBuffer<DecodeStruct> decodeQueue;
+    TimeBuffer<O3Comm::DecodeStruct> decodeQueue;

     /** The rename stage's instruction queue. */
-    TimeBuffer<RenameStruct> renameQueue;
+    TimeBuffer<O3Comm::RenameStruct> renameQueue;

     /** The IEW stage's instruction queue. */
-    TimeBuffer<IEWStruct> iewQueue;
+    TimeBuffer<O3Comm::IEWStruct> iewQueue;

   private:
     /** The activity recorder; used to tell if the CPU has any
diff --git a/src/cpu/o3/decode.hh b/src/cpu/o3/decode.hh
index 5ce138c..e9de729 100644
--- a/src/cpu/o3/decode.hh
+++ b/src/cpu/o3/decode.hh
@@ -44,6 +44,7 @@
 #include <queue>

 #include "base/statistics.hh"
+#include "cpu/o3/comm.hh"
 #include "cpu/o3/dyn_inst_ptr.hh"
 #include "cpu/o3/limits.hh"
 #include "cpu/timebuf.hh"
@@ -63,12 +64,6 @@
 template<class Impl>
 class DefaultDecode
 {
-  private:
-    // Typedefs from the Impl.
-    typedef typename Impl::FetchStruct FetchStruct;
-    typedef typename Impl::DecodeStruct DecodeStruct;
-    typedef typename Impl::TimeStruct TimeStruct;
-
   public:
     /** Overall decode stage status. Used to determine if the CPU can
      * deschedule itself due to a lack of activity.
@@ -110,13 +105,13 @@
     std::string name() const;

     /** Sets the main backwards communication time buffer pointer. */
-    void setTimeBuffer(TimeBuffer<TimeStruct> *tb_ptr);
+    void setTimeBuffer(TimeBuffer<O3Comm::TimeStruct> *tb_ptr);

/** Sets pointer to time buffer used to communicate to the next stage. */
-    void setDecodeQueue(TimeBuffer<DecodeStruct> *dq_ptr);
+    void setDecodeQueue(TimeBuffer<O3Comm::DecodeStruct> *dq_ptr);

     /** Sets pointer to time buffer coming from fetch. */
-    void setFetchQueue(TimeBuffer<FetchStruct> *fq_ptr);
+    void setFetchQueue(TimeBuffer<O3Comm::FetchStruct> *fq_ptr);

     /** Sets pointer to list of active threads. */
     void setActiveThreads(std::list<ThreadID> *at_ptr);
@@ -207,32 +202,32 @@
     FullO3CPU<Impl> *cpu;

     /** Time buffer interface. */
-    TimeBuffer<TimeStruct> *timeBuffer;
+    TimeBuffer<O3Comm::TimeStruct> *timeBuffer;

     /** Wire to get rename's output from backwards time buffer. */
-    typename TimeBuffer<TimeStruct>::wire fromRename;
+    typename TimeBuffer<O3Comm::TimeStruct>::wire fromRename;

     /** Wire to get iew's information from backwards time buffer. */
-    typename TimeBuffer<TimeStruct>::wire fromIEW;
+    typename TimeBuffer<O3Comm::TimeStruct>::wire fromIEW;

     /** Wire to get commit's information from backwards time buffer. */
-    typename TimeBuffer<TimeStruct>::wire fromCommit;
+    typename TimeBuffer<O3Comm::TimeStruct>::wire fromCommit;

     /** Wire to write information heading to previous stages. */
     // Might not be the best name as not only fetch will read it.
-    typename TimeBuffer<TimeStruct>::wire toFetch;
+    typename TimeBuffer<O3Comm::TimeStruct>::wire toFetch;

     /** Decode instruction queue. */
-    TimeBuffer<DecodeStruct> *decodeQueue;
+    TimeBuffer<O3Comm::DecodeStruct> *decodeQueue;

     /** Wire used to write any information heading to rename. */
-    typename TimeBuffer<DecodeStruct>::wire toRename;
+    typename TimeBuffer<O3Comm::DecodeStruct>::wire toRename;

     /** Fetch instruction queue interface. */
-    TimeBuffer<FetchStruct> *fetchQueue;
+    TimeBuffer<O3Comm::FetchStruct> *fetchQueue;

     /** Wire to get fetch's output from fetch queue. */
-    typename TimeBuffer<FetchStruct>::wire fromFetch;
+    typename TimeBuffer<O3Comm::FetchStruct>::wire fromFetch;

     /** Queue of all instructions coming from fetch this cycle. */
     std::queue<O3DynInstPtr> insts[O3MaxThreads];
diff --git a/src/cpu/o3/decode_impl.hh b/src/cpu/o3/decode_impl.hh
index c5dd305..deedc13 100644
--- a/src/cpu/o3/decode_impl.hh
+++ b/src/cpu/o3/decode_impl.hh
@@ -159,7 +159,7 @@

 template<class Impl>
 void
-DefaultDecode<Impl>::setTimeBuffer(TimeBuffer<TimeStruct> *tb_ptr)
+DefaultDecode<Impl>::setTimeBuffer(TimeBuffer<O3Comm::TimeStruct> *tb_ptr)
 {
     timeBuffer = tb_ptr;

@@ -174,7 +174,7 @@

 template<class Impl>
 void
-DefaultDecode<Impl>::setDecodeQueue(TimeBuffer<DecodeStruct> *dq_ptr)
+DefaultDecode<Impl>::setDecodeQueue(TimeBuffer<O3Comm::DecodeStruct> *dq_ptr)
 {
     decodeQueue = dq_ptr;

@@ -184,7 +184,7 @@

 template<class Impl>
 void
-DefaultDecode<Impl>::setFetchQueue(TimeBuffer<FetchStruct> *fq_ptr)
+DefaultDecode<Impl>::setFetchQueue(TimeBuffer<O3Comm::FetchStruct> *fq_ptr)
 {
     fetchQueue = fq_ptr;

diff --git a/src/cpu/o3/fetch.hh b/src/cpu/o3/fetch.hh
index a9b534d..4cb7fb3 100644
--- a/src/cpu/o3/fetch.hh
+++ b/src/cpu/o3/fetch.hh
@@ -45,6 +45,7 @@
 #include "arch/utility.hh"
 #include "base/statistics.hh"
 #include "config/the_isa.hh"
+#include "cpu/o3/comm.hh"
 #include "cpu/o3/limits.hh"
 #include "cpu/pc_event.hh"
 #include "cpu/pred/bpred_unit.hh"
@@ -75,10 +76,6 @@
 class DefaultFetch
 {
   public:
-    /** Typedefs from Impl. */
-    typedef typename Impl::FetchStruct FetchStruct;
-    typedef typename Impl::TimeStruct TimeStruct;
-
     /**
      * IcachePort class for instruction fetch.
      */
@@ -222,13 +219,13 @@
     void regProbePoints();

     /** Sets the main backwards communication time buffer pointer. */
-    void setTimeBuffer(TimeBuffer<TimeStruct> *time_buffer);
+    void setTimeBuffer(TimeBuffer<O3Comm::TimeStruct> *time_buffer);

     /** Sets pointer to list of active threads. */
     void setActiveThreads(std::list<ThreadID> *at_ptr);

/** Sets pointer to time buffer used to communicate to the next stage. */
-    void setFetchQueue(TimeBuffer<FetchStruct> *fq_ptr);
+    void setFetchQueue(TimeBuffer<O3Comm::FetchStruct> *fq_ptr);

     /** Initialize stage. */
     void startupStage();
@@ -405,23 +402,23 @@
     FullO3CPU<Impl> *cpu;

     /** Time buffer interface. */
-    TimeBuffer<TimeStruct> *timeBuffer;
+    TimeBuffer<O3Comm::TimeStruct> *timeBuffer;

     /** Wire to get decode's information from backwards time buffer. */
-    typename TimeBuffer<TimeStruct>::wire fromDecode;
+    typename TimeBuffer<O3Comm::TimeStruct>::wire fromDecode;

     /** Wire to get rename's information from backwards time buffer. */
-    typename TimeBuffer<TimeStruct>::wire fromRename;
+    typename TimeBuffer<O3Comm::TimeStruct>::wire fromRename;

     /** Wire to get iew's information from backwards time buffer. */
-    typename TimeBuffer<TimeStruct>::wire fromIEW;
+    typename TimeBuffer<O3Comm::TimeStruct>::wire fromIEW;

     /** Wire to get commit's information from backwards time buffer. */
-    typename TimeBuffer<TimeStruct>::wire fromCommit;
+    typename TimeBuffer<O3Comm::TimeStruct>::wire fromCommit;

     //Might be annoying how this name is different than the queue.
     /** Wire used to write any information heading to decode. */
-    typename TimeBuffer<FetchStruct>::wire toDecode;
+    typename TimeBuffer<O3Comm::FetchStruct>::wire toDecode;

     /** BPredUnit. */
     BPredUnit *branchPred;
diff --git a/src/cpu/o3/fetch_impl.hh b/src/cpu/o3/fetch_impl.hh
index 171699c..86d7f12 100644
--- a/src/cpu/o3/fetch_impl.hh
+++ b/src/cpu/o3/fetch_impl.hh
@@ -256,7 +256,7 @@
 }
 template<class Impl>
 void
-DefaultFetch<Impl>::setTimeBuffer(TimeBuffer<TimeStruct> *time_buffer)
+DefaultFetch<Impl>::setTimeBuffer(TimeBuffer<O3Comm::TimeStruct> *time_buffer)
 {
     timeBuffer = time_buffer;

@@ -276,7 +276,7 @@

 template<class Impl>
 void
-DefaultFetch<Impl>::setFetchQueue(TimeBuffer<FetchStruct> *ftb_ptr)
+DefaultFetch<Impl>::setFetchQueue(TimeBuffer<O3Comm::FetchStruct> *ftb_ptr)
 {
     // Create wire to write information to proper place in fetch time buf.
     toDecode = ftb_ptr->getWire(0);
diff --git a/src/cpu/o3/iew.hh b/src/cpu/o3/iew.hh
index b6f553c..68c56b4 100644
--- a/src/cpu/o3/iew.hh
+++ b/src/cpu/o3/iew.hh
@@ -80,13 +80,6 @@
 template<class Impl>
 class DefaultIEW
 {
-  private:
-    //Typedefs from Impl
-    typedef typename Impl::TimeStruct TimeStruct;
-    typedef typename Impl::IEWStruct IEWStruct;
-    typedef typename Impl::RenameStruct RenameStruct;
-    typedef typename Impl::IssueStruct IssueStruct;
-
   public:
     /** Overall IEW stage status. Used to determine if the CPU can
      * deschedule itself due to a lack of activity.
@@ -141,13 +134,13 @@
     void clearStates(ThreadID tid);

     /** Sets main time buffer used for backwards communication. */
-    void setTimeBuffer(TimeBuffer<TimeStruct> *tb_ptr);
+    void setTimeBuffer(TimeBuffer<O3Comm::TimeStruct> *tb_ptr);

     /** Sets time buffer for getting instructions coming from rename. */
-    void setRenameQueue(TimeBuffer<RenameStruct> *rq_ptr);
+    void setRenameQueue(TimeBuffer<O3Comm::RenameStruct> *rq_ptr);

     /** Sets time buffer to pass on instructions to commit. */
-    void setIEWQueue(TimeBuffer<IEWStruct> *iq_ptr);
+    void setIEWQueue(TimeBuffer<O3Comm::IEWStruct> *iq_ptr);

     /** Sets pointer to list of active threads. */
     void setActiveThreads(std::list<ThreadID> *at_ptr);
@@ -301,37 +294,37 @@
     void updateExeInstStats(const O3DynInstPtr &inst);

     /** Pointer to main time buffer used for backwards communication. */
-    TimeBuffer<TimeStruct> *timeBuffer;
+    TimeBuffer<O3Comm::TimeStruct> *timeBuffer;

     /** Wire to write information heading to previous stages. */
-    typename TimeBuffer<TimeStruct>::wire toFetch;
+    typename TimeBuffer<O3Comm::TimeStruct>::wire toFetch;

     /** Wire to get commit's output from backwards time buffer. */
-    typename TimeBuffer<TimeStruct>::wire fromCommit;
+    typename TimeBuffer<O3Comm::TimeStruct>::wire fromCommit;

     /** Wire to write information heading to previous stages. */
-    typename TimeBuffer<TimeStruct>::wire toRename;
+    typename TimeBuffer<O3Comm::TimeStruct>::wire toRename;

     /** Rename instruction queue interface. */
-    TimeBuffer<RenameStruct> *renameQueue;
+    TimeBuffer<O3Comm::RenameStruct> *renameQueue;

     /** Wire to get rename's output from rename queue. */
-    typename TimeBuffer<RenameStruct>::wire fromRename;
+    typename TimeBuffer<O3Comm::RenameStruct>::wire fromRename;

     /** Issue stage queue. */
-    TimeBuffer<IssueStruct> issueToExecQueue;
+    TimeBuffer<O3Comm::IssueStruct> issueToExecQueue;

     /** Wire to read information from the issue stage time queue. */
-    typename TimeBuffer<IssueStruct>::wire fromIssue;
+    typename TimeBuffer<O3Comm::IssueStruct>::wire fromIssue;

     /**
      * IEW stage time buffer.  Holds ROB indices of instructions that
      * can be marked as completed.
      */
-    TimeBuffer<IEWStruct> *iewQueue;
+    TimeBuffer<O3Comm::IEWStruct> *iewQueue;

     /** Wire to write infromation heading to commit. */
-    typename TimeBuffer<IEWStruct>::wire toCommit;
+    typename TimeBuffer<O3Comm::IEWStruct>::wire toCommit;

     /** Queue of all instructions coming from rename this cycle. */
     std::queue<O3DynInstPtr> insts[O3MaxThreads];
diff --git a/src/cpu/o3/iew_impl.hh b/src/cpu/o3/iew_impl.hh
index 8d0e290..fbd7cf4 100644
--- a/src/cpu/o3/iew_impl.hh
+++ b/src/cpu/o3/iew_impl.hh
@@ -293,7 +293,7 @@

 template<class Impl>
 void
-DefaultIEW<Impl>::setTimeBuffer(TimeBuffer<TimeStruct> *tb_ptr)
+DefaultIEW<Impl>::setTimeBuffer(TimeBuffer<O3Comm::TimeStruct> *tb_ptr)
 {
     timeBuffer = tb_ptr;

@@ -311,7 +311,7 @@

 template<class Impl>
 void
-DefaultIEW<Impl>::setRenameQueue(TimeBuffer<RenameStruct> *rq_ptr)
+DefaultIEW<Impl>::setRenameQueue(TimeBuffer<O3Comm::RenameStruct> *rq_ptr)
 {
     renameQueue = rq_ptr;

@@ -321,7 +321,7 @@

 template<class Impl>
 void
-DefaultIEW<Impl>::setIEWQueue(TimeBuffer<IEWStruct> *iq_ptr)
+DefaultIEW<Impl>::setIEWQueue(TimeBuffer<O3Comm::IEWStruct> *iq_ptr)
 {
     iewQueue = iq_ptr;

diff --git a/src/cpu/o3/impl.hh b/src/cpu/o3/impl.hh
index d9d3e1f..b3b21e9 100644
--- a/src/cpu/o3/impl.hh
+++ b/src/cpu/o3/impl.hh
@@ -29,8 +29,6 @@
 #ifndef __CPU_O3_IMPL_HH__
 #define __CPU_O3_IMPL_HH__

-#include "cpu/o3/comm.hh"
-
 /** Implementation specific struct that defines several key types to the
  *  CPU, the stages within the CPU, the time buffers, and the DynInst.
  *  The struct defines the ISA, the CPU policy, the specific DynInst, the
@@ -39,25 +37,6 @@
  *  This is one of the key things that must be defined for each hardware
  *  specific CPU implementation.
  */
-struct O3CPUImpl
-{
-    /** The struct for communication between fetch and decode. */
-    typedef DefaultFetchDefaultDecode<O3CPUImpl> FetchStruct;
-
-    /** The struct for communication between decode and rename. */
-    typedef DefaultDecodeDefaultRename<O3CPUImpl> DecodeStruct;
-
-    /** The struct for communication between rename and IEW. */
-    typedef DefaultRenameDefaultIEW<O3CPUImpl> RenameStruct;
-
-    /** The struct for communication between IEW and commit. */
-    typedef DefaultIEWDefaultCommit<O3CPUImpl> IEWStruct;
-
-    /** The struct for communication within the IEW stage. */
-    typedef ::IssueStruct<O3CPUImpl> IssueStruct;
-
-    /** The struct for all backwards communication. */
-    typedef TimeBufStruct<O3CPUImpl> TimeStruct;
-};
+struct O3CPUImpl {};

 #endif // __CPU_O3_SPARC_IMPL_HH__
diff --git a/src/cpu/o3/inst_queue.hh b/src/cpu/o3/inst_queue.hh
index 51fb40a..8cfbfeb 100644
--- a/src/cpu/o3/inst_queue.hh
+++ b/src/cpu/o3/inst_queue.hh
@@ -50,6 +50,7 @@
 #include "base/statistics.hh"
 #include "base/types.hh"
 #include "cpu/inst_seq.hh"
+#include "cpu/o3/comm.hh"
 #include "cpu/o3/dep_graph.hh"
 #include "cpu/o3/dyn_inst_ptr.hh"
 #include "cpu/o3/limits.hh"
@@ -91,10 +92,6 @@
 class InstructionQueue
 {
   public:
-    //Typedefs from the Impl.
-    typedef typename Impl::IssueStruct IssueStruct;
-    typedef typename Impl::TimeStruct TimeStruct;
-
     // Typedef of iterator through the list of instructions.
     typedef typename std::list<O3DynInstPtr>::iterator ListIt;

@@ -142,10 +139,10 @@
     void setActiveThreads(std::list<ThreadID> *at_ptr);

     /** Sets the timer buffer between issue and execute. */
-    void setIssueToExecuteQueue(TimeBuffer<IssueStruct> *i2eQueue);
+    void setIssueToExecuteQueue(TimeBuffer<O3Comm::IssueStruct> *i2eQueue);

     /** Sets the global time buffer. */
-    void setTimeBuffer(TimeBuffer<TimeStruct> *tb_ptr);
+    void setTimeBuffer(TimeBuffer<O3Comm::TimeStruct> *tb_ptr);

     /** Determine if we are drained. */
     bool isDrained() const;
@@ -299,13 +296,13 @@
/** The queue to the execute stage. Issued instructions will be written
      *  into it.
      */
-    TimeBuffer<IssueStruct> *issueToExecuteQueue;
+    TimeBuffer<O3Comm::IssueStruct> *issueToExecuteQueue;

     /** The backwards time buffer. */
-    TimeBuffer<TimeStruct> *timeBuffer;
+    TimeBuffer<O3Comm::TimeStruct> *timeBuffer;

     /** Wire to read information from timebuffer. */
-    typename TimeBuffer<TimeStruct>::wire fromCommit;
+    typename TimeBuffer<O3Comm::TimeStruct>::wire fromCommit;

     /** Function unit pool. */
     FUPool *fuPool;
diff --git a/src/cpu/o3/inst_queue_impl.hh b/src/cpu/o3/inst_queue_impl.hh
index fbe2167..5204594 100644
--- a/src/cpu/o3/inst_queue_impl.hh
+++ b/src/cpu/o3/inst_queue_impl.hh
@@ -435,14 +435,15 @@

 template <class Impl>
 void
-InstructionQueue<Impl>::setIssueToExecuteQueue(TimeBuffer<IssueStruct> *i2e_ptr)
+InstructionQueue<Impl>::setIssueToExecuteQueue(
+        TimeBuffer<O3Comm::IssueStruct> *i2e_ptr)
 {
       issueToExecuteQueue = i2e_ptr;
 }

 template <class Impl>
 void
-InstructionQueue<Impl>::setTimeBuffer(TimeBuffer<TimeStruct> *tb_ptr)
+InstructionQueue<Impl>::setTimeBuffer(TimeBuffer<O3Comm::TimeStruct> *tb_ptr)
 {
     timeBuffer = tb_ptr;

@@ -773,7 +774,7 @@
     DPRINTF(IQ, "Attempting to schedule ready instructions from "
             "the IQ.\n");

-    IssueStruct *i2e_info = issueToExecuteQueue->access(0);
+    O3Comm::IssueStruct *i2e_info = issueToExecuteQueue->access(0);

     O3DynInstPtr mem_inst;
     while ((mem_inst = std::move(getDeferredMemInstToExecute()))) {
diff --git a/src/cpu/o3/lsq_unit.hh b/src/cpu/o3/lsq_unit.hh
index 0fee4a1..0528bbe 100644
--- a/src/cpu/o3/lsq_unit.hh
+++ b/src/cpu/o3/lsq_unit.hh
@@ -54,6 +54,7 @@
 #include "base/refcnt.hh"
 #include "config/the_isa.hh"
 #include "cpu/inst_seq.hh"
+#include "cpu/o3/comm.hh"
 #include "cpu/o3/dyn_inst_ptr.hh"
 #include "cpu/o3/lsq.hh"
 #include "cpu/timebuf.hh"
@@ -86,8 +87,6 @@
   public:
     static constexpr auto MaxDataBytes = MaxVecRegLenInBytes;

-    typedef typename Impl::IssueStruct IssueStruct;
-
     using LSQSenderState = typename LSQ<Impl>::LSQSenderState;
     using LSQRequest = typename LSQ<Impl>::LSQRequest;
   private:
@@ -522,7 +521,7 @@
     Addr cacheBlockMask;

     /** Wire to read information from the issue stage time queue. */
-    typename TimeBuffer<IssueStruct>::wire fromIssue;
+    typename TimeBuffer<O3Comm::IssueStruct>::wire fromIssue;

     /** Whether or not the LSQ is stalled. */
     bool stalled;
diff --git a/src/cpu/o3/probe/elastic_trace.hh b/src/cpu/o3/probe/elastic_trace.hh
index dd1206a..49939a4 100644
--- a/src/cpu/o3/probe/elastic_trace.hh
+++ b/src/cpu/o3/probe/elastic_trace.hh
@@ -50,8 +50,10 @@
 #include <unordered_map>
 #include <utility>

+#include "base/statistics.hh"
 #include "cpu/o3/dyn_inst_ptr.hh"
 #include "cpu/o3/impl.hh"
+#include "cpu/reg_class.hh"
 #include "mem/request.hh"
 #include "params/ElasticTrace.hh"
 #include "proto/inst_dep_record.pb.h"
diff --git a/src/cpu/o3/rename.hh b/src/cpu/o3/rename.hh
index ede0fea..22f89ee 100644
--- a/src/cpu/o3/rename.hh
+++ b/src/cpu/o3/rename.hh
@@ -47,6 +47,7 @@

 #include "base/statistics.hh"
 #include "config/the_isa.hh"
+#include "cpu/o3/comm.hh"
 #include "cpu/o3/commit.hh"
 #include "cpu/o3/dyn_inst_ptr.hh"
 #include "cpu/o3/free_list.hh"
@@ -73,11 +74,6 @@
 class DefaultRename
 {
   public:
-    // Typedefs from the Impl.
-    typedef typename Impl::DecodeStruct DecodeStruct;
-    typedef typename Impl::RenameStruct RenameStruct;
-    typedef typename Impl::TimeStruct TimeStruct;
-
     // A deque is used to queue the instructions. Barrier insts must
     // be added to the front of the queue, which is the only reason for
     // using a deque instead of a queue. (Most other stages use a
@@ -132,13 +128,13 @@
     void regProbePoints();

     /** Sets the main backwards communication time buffer pointer. */
-    void setTimeBuffer(TimeBuffer<TimeStruct> *tb_ptr);
+    void setTimeBuffer(TimeBuffer<O3Comm::TimeStruct> *tb_ptr);

/** Sets pointer to time buffer used to communicate to the next stage. */
-    void setRenameQueue(TimeBuffer<RenameStruct> *rq_ptr);
+    void setRenameQueue(TimeBuffer<O3Comm::RenameStruct> *rq_ptr);

     /** Sets pointer to time buffer coming from decode. */
-    void setDecodeQueue(TimeBuffer<DecodeStruct> *dq_ptr);
+    void setDecodeQueue(TimeBuffer<O3Comm::DecodeStruct> *dq_ptr);

     /** Sets pointer to IEW stage. Used only for initialization. */
     void setIEWStage(DefaultIEW<Impl> *iew_stage)
@@ -319,28 +315,28 @@
     FullO3CPU<Impl> *cpu;

     /** Pointer to main time buffer used for backwards communication. */
-    TimeBuffer<TimeStruct> *timeBuffer;
+    TimeBuffer<O3Comm::TimeStruct> *timeBuffer;

     /** Wire to get IEW's output from backwards time buffer. */
-    typename TimeBuffer<TimeStruct>::wire fromIEW;
+    typename TimeBuffer<O3Comm::TimeStruct>::wire fromIEW;

     /** Wire to get commit's output from backwards time buffer. */
-    typename TimeBuffer<TimeStruct>::wire fromCommit;
+    typename TimeBuffer<O3Comm::TimeStruct>::wire fromCommit;

     /** Wire to write infromation heading to previous stages. */
-    typename TimeBuffer<TimeStruct>::wire toDecode;
+    typename TimeBuffer<O3Comm::TimeStruct>::wire toDecode;

     /** Rename instruction queue. */
-    TimeBuffer<RenameStruct> *renameQueue;
+    TimeBuffer<O3Comm::RenameStruct> *renameQueue;

     /** Wire to write any information heading to IEW. */
-    typename TimeBuffer<RenameStruct>::wire toIEW;
+    typename TimeBuffer<O3Comm::RenameStruct>::wire toIEW;

     /** Decode instruction queue interface. */
-    TimeBuffer<DecodeStruct> *decodeQueue;
+    TimeBuffer<O3Comm::DecodeStruct> *decodeQueue;

     /** Wire to get decode's output from decode queue. */
-    typename TimeBuffer<DecodeStruct>::wire fromDecode;
+    typename TimeBuffer<O3Comm::DecodeStruct>::wire fromDecode;

     /** Queue of all instructions coming from decode this cycle. */
     InstQueue insts[O3MaxThreads];
diff --git a/src/cpu/o3/rename_impl.hh b/src/cpu/o3/rename_impl.hh
index 6fcd7c2..9ea1dbc 100644
--- a/src/cpu/o3/rename_impl.hh
+++ b/src/cpu/o3/rename_impl.hh
@@ -181,7 +181,7 @@

 template <class Impl>
 void
-DefaultRename<Impl>::setTimeBuffer(TimeBuffer<TimeStruct> *tb_ptr)
+DefaultRename<Impl>::setTimeBuffer(TimeBuffer<O3Comm::TimeStruct> *tb_ptr)
 {
     timeBuffer = tb_ptr;

@@ -197,7 +197,7 @@

 template <class Impl>
 void
-DefaultRename<Impl>::setRenameQueue(TimeBuffer<RenameStruct> *rq_ptr)
+DefaultRename<Impl>::setRenameQueue(TimeBuffer<O3Comm::RenameStruct> *rq_ptr)
 {
     renameQueue = rq_ptr;

@@ -207,7 +207,7 @@

 template <class Impl>
 void
-DefaultRename<Impl>::setDecodeQueue(TimeBuffer<DecodeStruct> *dq_ptr)
+DefaultRename<Impl>::setDecodeQueue(TimeBuffer<O3Comm::DecodeStruct> *dq_ptr)
 {
     decodeQueue = dq_ptr;


--
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Gerrit-Project: public/gem5
Gerrit-Branch: develop
Gerrit-Change-Id: I3889bdbb1b8d638f7b04e5bfb7698e35eb7f2e57
Gerrit-Change-Number: 42103
Gerrit-PatchSet: 1
Gerrit-Owner: Gabe Black <[email protected]>
Gerrit-MessageType: newchange
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