mem: Fix (ab)use of emplace to avoid temporary object creation

src/mem/bridge.cc

@@ -217,7 +217,7 @@ Bridge::BridgeMasterPort::schedTimingReq(PacketPtr pkt, Tick when)
 
     assert(transmitList.size() != reqQueueLimit);
 
-    transmitList.emplace_back(DeferredPacket(pkt, when));
+    transmitList.emplace_back(pkt, when);
 }
 
 
@@ -232,7 +232,7 @@ Bridge::BridgeSlavePort::schedTimingResp(PacketPtr pkt, Tick when)
         bridge.schedule(sendEvent, when);
     }
 
-    transmitList.emplace_back(DeferredPacket(pkt, when));
+    transmitList.emplace_back(pkt, when);
 }
 
 void

src/mem/cache/mshr.cc

@@ -104,7 +104,7 @@ MSHR::TargetList::add(PacketPtr pkt, Tick readyTime,
         }
     }
 
-    emplace_back(Target(pkt, readyTime, order, source, markPending));
+    emplace_back(pkt, readyTime, order, source, markPending);
 }
 
 

src/mem/cache/prefetch/queued.cc

@@ -149,7 +149,7 @@ QueuedPrefetcher::notify(const PacketPtr &pkt)
             DPRINTF(HWPrefetch, "Prefetch queued. "
                     "addr:%#x tick:%lld.\n", pf_addr, pf_time);
 
-            pfq.emplace_back(DeferredPacket(pf_time, pf_pkt));
+            pfq.emplace_back(pf_time, pf_pkt);
         }
     }
 

src/mem/packet_queue.cc

@@ -142,7 +142,7 @@ PacketQueue::schedSendTiming(PacketPtr pkt, Tick when, bool force_order)
         // note that currently we ignore a potentially outstanding retry
         // and could in theory put a new packet at the head of the
         // transmit list before retrying the existing packet
-        transmitList.emplace_front(DeferredPacket(when, pkt));
+        transmitList.emplace_front(when, pkt);
         schedSendEvent(when);
         return;
     }
@@ -157,7 +157,7 @@ PacketQueue::schedSendTiming(PacketPtr pkt, Tick when, bool force_order)
 
     // list is non-empty and this belongs at the end
     if (when >= transmitList.back().tick) {
-        transmitList.emplace_back(DeferredPacket(when, pkt));
+        transmitList.emplace_back(when, pkt);
         return;
     }
 
@@ -169,7 +169,7 @@ PacketQueue::schedSendTiming(PacketPtr pkt, Tick when, bool force_order)
     ++i; // already checked for insertion at front
     while (i != transmitList.end() && when >= i->tick)
         ++i;
-    transmitList.emplace(i, DeferredPacket(when, pkt));
+    transmitList.emplace(i, when, pkt);
 }
 
 void

src/mem/simple_mem.cc

@@ -161,7 +161,7 @@ SimpleMemory::recvTimingReq(PacketPtr pkt)
         // to keep things simple (and in order), we put the packet at
         // the end even if the latency suggests it should be sent
         // before the packet(s) before it
-        packetQueue.emplace_back(DeferredPacket(pkt, curTick() + getLatency()));
+        packetQueue.emplace_back(pkt, curTick() + getLatency());
         if (!retryResp && !dequeueEvent.scheduled())
             schedule(dequeueEvent, packetQueue.back().tick);
     } else {