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| author | Binh Pham <binhpham@cs.rutgers.edu> | 2014-06-21 10:26:43 -0700 |
|---|---|---|
| committer | Binh Pham <binhpham@cs.rutgers.edu> | 2014-06-21 10:26:43 -0700 |
| commit | 0782d92286ded450b7e615fefbd5d6d5e738c8cd (patch) | |
| tree | f69fc67a0957740bab56e11ca9587834da3e18fa /src/cpu/o3/cpu.cc | |
| parent | fdb965f5c17d8866a63c206e1975460544d8eda9 (diff) | |
| download | gem5-0782d92286ded450b7e615fefbd5d6d5e738c8cd.tar.xz | |
o3: split load & store queue full cases in rename
Check for free entries in Load Queue and Store Queue separately to
avoid cases when load cannot be renamed due to full Store Queue and
vice versa.
This work was done while Binh was an intern at AMD Research.
Diffstat (limited to 'src/cpu/o3/cpu.cc')
| -rw-r--r-- | src/cpu/o3/cpu.cc | 10 |
1 files changed, 8 insertions, 2 deletions
diff --git a/src/cpu/o3/cpu.cc b/src/cpu/o3/cpu.cc index ac003bc24..4f48e29d9 100644 --- a/src/cpu/o3/cpu.cc +++ b/src/cpu/o3/cpu.cc @@ -1009,12 +1009,18 @@ FullO3CPU<Impl>::activateWhenReady(ThreadID tid) "IQ entries.\n", tid); ready = false; - } else if (iew.ldstQueue.numFreeEntries() >= + } else if (iew.ldstQueue.numFreeLoadEntries() >= iew.ldstQueue.entryAmount(activeThreads.size() + 1)) { DPRINTF(O3CPU,"[tid:%i] Suspending thread due to not enough " - "LSQ entries.\n", + "LQ entries.\n", tid); ready = false; + } else if (iew.ldstQueue.numFreeStoreEntries() >= + iew.ldstQueue.entryAmount(activeThreads.size() + 1)) { + DPRINTF(O3CPU,"[tid:%i] Suspending thread due to not enough " + "SQ entries.\n", + tid); + ready = false; } if (ready) { |