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cpu: Fix segment fault when using debug flags Branch (#169)

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This commit is contained in:
Jason Lowe-Power
2023-08-10 08:33:48 -07:00
committed by GitHub
parent 4cac85cb80 f54777419d
commit b88e60ff28
1 changed files with 11 additions and 1 deletions
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12
src/cpu/pred/bpred_unit.cc
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@@ -498,15 +498,25 @@ BPredUnit::squash(const InstSeqNum &squashed_sn,
hist_it->pushedRAS = false;
}
if (hist_it->usedRAS) {
std::string RASTarget;
DPRINTF(Branch,
"[tid:%i] [squash sn:%llu] Incorrectly predicted "
"return [sn:%llu] PC: %#x Restoring RAS\n", tid,
squashed_sn,
hist_it->seqNum, hist_it->pc);
if (hist_it->RASTarget) {
std::ostringstream os;
os << *hist_it->RASTarget.get();
RASTarget = os.str();
} else {
RASTarget = "no RAS";
}
DPRINTF(Branch,
"[tid:%i] [squash sn:%llu] Restoring top of RAS "
"to: %i, target: %s\n", tid, squashed_sn,
hist_it->RASIndex, *hist_it->RASTarget);
hist_it->RASIndex, RASTarget.c_str());
RAS[tid].restore(hist_it->RASIndex, hist_it->RASTarget.get());
hist_it->usedRAS = false;
}