diff options
Diffstat (limited to 'src/cpu/o3/fetch_impl.hh')
| -rw-r--r-- | src/cpu/o3/fetch_impl.hh | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/src/cpu/o3/fetch_impl.hh b/src/cpu/o3/fetch_impl.hh index 39a13f9f8..4045492ca 100644 --- a/src/cpu/o3/fetch_impl.hh +++ b/src/cpu/o3/fetch_impl.hh @@ -519,6 +519,11 @@ DefaultFetch<Impl>::fetchCacheLine(Addr fetch_PC, Fault &ret_fault, unsigned tid // Align the fetch PC so it's at the start of a cache block. fetch_PC = icacheBlockAlignPC(fetch_PC); + // If we've already got the block, no need to try to fetch it again. + if (fetch_PC == cacheDataPC[tid]) { + return true; + } + // Setup the memReq to do a read of the first instruction's address. // Set the appropriate read size and flags as well. // Build request here. @@ -552,6 +557,8 @@ DefaultFetch<Impl>::fetchCacheLine(Addr fetch_PC, Fault &ret_fault, unsigned tid Packet::ReadReq, Packet::Broadcast); data_pkt->dataDynamic(new uint8_t[cacheBlkSize]); + cacheDataPC[tid] = fetch_PC; + DPRINTF(Fetch, "Fetch: Doing instruction read.\n"); fetchedCacheLines++; |