diff options
Diffstat (limited to 'src/cpu/o3/lsq_unit_impl.hh')
| -rw-r--r-- | src/cpu/o3/lsq_unit_impl.hh | 31 |
1 files changed, 19 insertions, 12 deletions
diff --git a/src/cpu/o3/lsq_unit_impl.hh b/src/cpu/o3/lsq_unit_impl.hh index 80445e261..fb6d8cb54 100644 --- a/src/cpu/o3/lsq_unit_impl.hh +++ b/src/cpu/o3/lsq_unit_impl.hh @@ -124,12 +124,14 @@ LSQUnit<Impl>::completeDataAccess(PacketPtr pkt) return; } - if ( pkt->isSpec() && pkt->isRead() && (!pkt->isL1Hit()) ) { - DPRINTF(LSQUnit, "spec load miss for inst [sn:%lli], fence it.\n", - inst->seqNum); - inst->fenceDelay(true); - } else { - DPRINTF(LSQUnit, "spec load hit for inst [sn:%lli].\n"); + if ( pkt->isSpec() ) { + if ( pkt->isRead() && (!pkt->isL1Hit()) ) { + DPRINTF(LSQUnit, "spec load miss for inst [sn:%lli], fence it.\n", + inst->seqNum); + inst->fenceDelay(true); + } else { + DPRINTF(LSQUnit, "spec load hit for inst [sn:%lli].\n", inst->seqNum); + } } assert(!cpu->switchedOut()); @@ -1373,12 +1375,17 @@ LSQUnit<Impl>::writeback(const DynInstPtr &inst, PacketPtr pkt) "in this case, we will put it into ROB twice."); if (inst->fenceDelay()) { - DPRINTF(LSQUnit, "To write back a fence delayed spec load [sn:%lli].\n", inst->seqNum); - assert(pkt->isSpec()); - inst->onlyWaitForFence(true); - inst->translationStarted(false); - inst->translationCompleted(false); - iewStage->instQueue.deferMemInst(inst); + if (pkt->isSpec()) { + DPRINTF(LSQUnit, "To write back a fence delayed spec load [sn:%lli].\n", inst->seqNum); + inst->onlyWaitForFence(true); + inst->translationStarted(false); + inst->translationCompleted(false); + iewStage->instQueue.deferMemInst(inst); + } else { + DPRINTF(LSQUnit, "inst [sn:%lli] inst->fenceDelay() && !pkt->isSpec()" + "at LSQUnit::writeback, possibly due to IFT issue in gem5.\n", inst->seqNum); + inst->fenceDelay(false); + } } else if (!inst->isExecuted()) { inst->setExecuted(); |