diff options
Diffstat (limited to 'src/cpu/o3/rename_impl.hh')
| -rw-r--r-- | src/cpu/o3/rename_impl.hh | 18 |
1 files changed, 15 insertions, 3 deletions
diff --git a/src/cpu/o3/rename_impl.hh b/src/cpu/o3/rename_impl.hh index bc024f603..66700563a 100644 --- a/src/cpu/o3/rename_impl.hh +++ b/src/cpu/o3/rename_impl.hh @@ -580,7 +580,12 @@ DefaultRename<Impl>::renameInsts(ThreadID tid) tid, instsInProgress[tid], fromIEW->iewInfo[tid].dispatched); // Handle serializing the next instruction if necessary. - if (serializeOnNextInst[tid]) { + // Add one more serializing condition [mengjia] + if (serializeOnNextInst[tid] || insts_to_rename.front()->isBlock()) { + if(insts_to_rename.front()->isBlock()){ + DPRINTF(Rename, "Rename got rdtscp instructions for thread %d and ROB empty: %d, instProgress: %d, handled: %d.\n", + tid, emptyROB[tid], instsInProgress[tid], insts_to_rename.front()->isSerializeHandled()); + } if (emptyROB[tid] && instsInProgress[tid] == 0) { // ROB already empty; no need to serialize. serializeOnNextInst[tid] = false; @@ -669,6 +674,12 @@ DefaultRename<Impl>::renameInsts(ThreadID tid) // instructions. This is mainly due to lack of support for // out-of-order operations of either of those classes of // instructions. + + // added debug infor for block state / rdtscp [mengjia] + if(inst->isBlock()){ + DPRINTF(Rename, "Rename got rdtscp instructions for thread %d and ROB empty: %d, instProgress: %d, handled: %d.\n", + tid, emptyROB[tid], instsInProgress[tid], inst->isSerializeHandled()); + } if ((inst->isIprAccess() || inst->isSerializeBefore()) && !inst->isSerializeHandled()) { DPRINTF(Rename, "Serialize before instruction encountered.\n"); @@ -685,7 +696,7 @@ DefaultRename<Impl>::renameInsts(ThreadID tid) renameStatus[tid] = SerializeStall; serializeInst[tid] = inst; - + blockThisCycle = true; break; @@ -1370,7 +1381,8 @@ DefaultRename<Impl>::serializeAfter(InstQueue &inst_list, ThreadID tid) // Mark a bit to say that I must serialize on the next instruction. serializeOnNextInst[tid] = true; return; - } + } + // Set the next instruction as serializing. inst_list.front()->setSerializeBefore(); |