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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 | 7bc52af7716168baa5deb28bb88475ddbba5d62a (patch) | |
| tree | 23cf6a6c94e8386b2c64c210a4a9e6962234faf8 /src/cpu/pred/bpred_unit.cc | |
| parent | f902c0218ae3a8df558f1427302fbf0931b8f7d7 (diff) | |
| download | gem5-7bc52af7716168baa5deb28bb88475ddbba5d62a.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) { |