O3CPU: Fix iqCount and lsqCount SMT fetch policies.

Fixes two of the SMT fetch policies in O3CPU that were returning the count
of instructions in the IQ or LSQ rather than the thread ID to fetch from.

diff --git a/src/cpu/o3/fetch_impl.hh b/src/cpu/o3/fetch_impl.hh
index 2c490676071228e17efb8d32029a9945b7cce7f7..a2f2b4f8a1bfb2df618055196e466de67c39df04 100644 (file)
--- a/src/cpu/o3/fetch_impl.hh
+++ b/src/cpu/o3/fetch_impl.hh
@@ -1404,19 +1404,22 @@ template<class Impl>
 ThreadID
 DefaultFetch<Impl>::iqCount()
 {
-    std::priority_queue<ThreadID> PQ;
+    std::priority_queue<unsigned> PQ;
+    std::map<unsigned, ThreadID> threadMap;
 
     list<ThreadID>::iterator threads = activeThreads->begin();
     list<ThreadID>::iterator end = activeThreads->end();
 
     while (threads != end) {
         ThreadID tid = *threads++;
+        unsigned iqCount = fromIEW->iewInfo[tid].iqCount;
 
-        PQ.push(fromIEW->iewInfo[tid].iqCount);
+        PQ.push(iqCount);
+        threadMap[iqCount] = tid;
     }
 
     while (!PQ.empty()) {
-        ThreadID high_pri = PQ.top();
+        ThreadID high_pri = threadMap[PQ.top()];
 
         if (fetchStatus[high_pri] == Running ||
             fetchStatus[high_pri] == IcacheAccessComplete ||
@@ -1434,19 +1437,22 @@ template<class Impl>
 ThreadID
 DefaultFetch<Impl>::lsqCount()
 {
-    std::priority_queue<ThreadID> PQ;
+    std::priority_queue<unsigned> PQ;
+    std::map<unsigned, ThreadID> threadMap;
 
     list<ThreadID>::iterator threads = activeThreads->begin();
     list<ThreadID>::iterator end = activeThreads->end();
 
     while (threads != end) {
         ThreadID tid = *threads++;
+        unsigned ldstqCount = fromIEW->iewInfo[tid].ldstqCount;
 
-        PQ.push(fromIEW->iewInfo[tid].ldstqCount);
+        PQ.push(ldstqCount);
+        threadMap[ldstqCount] = tid;
     }
 
     while (!PQ.empty()) {
-        ThreadID high_pri = PQ.top();
+        ThreadID high_pri = threadMap[PQ.top()];
 
         if (fetchStatus[high_pri] == Running ||
             fetchStatus[high_pri] == IcacheAccessComplete ||