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Review request for Default. Repository: gem5 Description ------- Changeset 10253:992be57d8ca3 --------------------------- cpu: Fix incorrect speculative branch predictor behavior When a branch mispredicted gem5 would squash all history after and including the mispredicted branch. However, the mispredicted branch is still speculative and its history is required to rollback state if another, older, branch mispredicts. This leads to things like RAS corruption. Diffs ----- src/cpu/pred/2bit_local.hh a2bb75a474fd src/cpu/pred/bpred_unit.hh a2bb75a474fd src/cpu/pred/bpred_unit_impl.hh a2bb75a474fd src/cpu/pred/tournament.hh a2bb75a474fd src/cpu/pred/tournament.cc a2bb75a474fd Diff: http://reviews.gem5.org/r/2298/diff/ Testing ------- Thanks, Ali Saidi _______________________________________________ gem5-dev mailing list [email protected] http://m5sim.org/mailman/listinfo/gem5-dev
