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| author | Ali Saidi <Ali.Saidi@ARM.com> | 2011-08-19 15:08:07 -0500 |
|---|---|---|
| committer | Ali Saidi <Ali.Saidi@ARM.com> | 2011-08-19 15:08:07 -0500 |
| commit | b6203360ef684a8dc32981221336f5d216ce2668 (patch) | |
| tree | e4c8e7b374b2685f19016b0f3e79633a858ef8d2 /src/cpu/o3/O3CPU.py | |
| parent | 5f425b8bd1ac70b61fc57b7ec44c52cd7d8de9fb (diff) | |
| download | gem5-b6203360ef684a8dc32981221336f5d216ce2668.tar.xz | |
LSQ: Set store predictor to periodically clear itself as recommended in the storesets paper.
This patch improves performance by as much as 10% on some spec benchmarks.
Diffstat (limited to 'src/cpu/o3/O3CPU.py')
| -rw-r--r-- | src/cpu/o3/O3CPU.py | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/src/cpu/o3/O3CPU.py b/src/cpu/o3/O3CPU.py index f379fcd8a..47b18a3ec 100644 --- a/src/cpu/o3/O3CPU.py +++ b/src/cpu/o3/O3CPU.py @@ -121,6 +121,8 @@ class DerivO3CPU(BaseCPU): LSQDepCheckShift = Param.Unsigned(4, "Number of places to shift addr before check") LSQCheckLoads = Param.Bool(True, "Should dependency violations be checked for loads & stores or just stores") + store_set_clear_period = Param.Unsigned(250000, + "Number of load/store insts before the dep predictor should be invalidated") LFSTSize = Param.Unsigned(1024, "Last fetched store table size") SSITSize = Param.Unsigned(1024, "Store set ID table size") |