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| author | Mitch Hayenga <mitch.hayenga@arm.com> | 2016-04-05 11:44:27 -0500 |
|---|---|---|
| committer | Mitch Hayenga <mitch.hayenga@arm.com> | 2016-04-05 11:44:27 -0500 |
| commit | 3f6874cb295695a225fca6825bfe24a4b97641fd (patch) | |
| tree | e5a64a9441bc2934fce326d2753e63d126a8c4a0 /src/cpu/pred/bpred_unit.cc | |
| parent | 1097aa1638dc3b1e009738932908ab5c253b461b (diff) | |
| download | gem5-3f6874cb295695a225fca6825bfe24a4b97641fd.tar.xz | |
cpu: Fix BTB threading oversight
The extant BTB code doesn't hash on the thread id but does check the
thread id for 'btb hits'. This results in 1-thread of a multi-threaded
workload taking a BTB entry, and all other threads missing for the same branch
missing.
Diffstat (limited to 'src/cpu/pred/bpred_unit.cc')
| -rw-r--r-- | src/cpu/pred/bpred_unit.cc | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/src/cpu/pred/bpred_unit.cc b/src/cpu/pred/bpred_unit.cc index 8bb84f836..c38927c8d 100644 --- a/src/cpu/pred/bpred_unit.cc +++ b/src/cpu/pred/bpred_unit.cc @@ -59,7 +59,8 @@ BPredUnit::BPredUnit(const Params *params) predHist(numThreads), BTB(params->BTBEntries, params->BTBTagSize, - params->instShiftAmt), + params->instShiftAmt, + params->numThreads), RAS(numThreads), instShiftAmt(params->instShiftAmt) { |