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changed 3 RSZ errors to warnings #10081

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Merged
maliberty merged 2 commits into from
Apr 8, 2026
Merged

changed 3 RSZ errors to warnings #10081

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2dc70e6
changed 3 RSZ errors to warnings
precisionmoon Apr 7, 2026
f60a912
resolved merge conflict
precisionmoon Apr 7, 2026
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32 changes: 20 additions & 12 deletions src/rsz/src/Rebuffer.cc
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Original file line number Diff line number Diff line change
Expand Up @@ -687,10 +687,11 @@ BnetPtr Rebuffer::bufferForTiming(const BnetPtr& tree,
// of the algorithm (wire_length_step_ should have been chosen
// to always allow a minimal size buffer to drive itself without
// ERC)
logger_->critical(RSZ,
2008,
"buffering pin {}: wire step options empty",
network_->name(pin_));
logger_->warn(RSZ,
2008,
"Skipping net buffering because no buffer can "
"drive the wire load on net connected to pin {}.",
network_->name(pin_));
}
return opts1;
}
Expand Down Expand Up @@ -737,13 +738,14 @@ BnetPtr Rebuffer::bufferForTiming(const BnetPtr& tree,
insertBufferOptions(opts, level, std::min(remaining_wl, step));

if (opts.empty()) {
logger_->warn(RSZ,
2007,
"buffering pin {}: wire step options empty at "
"round {}, falling back to last valid options",
network_->name(pin_),
round);
opts = last_valid_opts;
logger_->warn(
RSZ,
2007,
"Skipping buffer insertion along long wire "
"segment on net connected to pin {} at round {} because no "
"buffer can drive the wire load.",
network_->name(pin_),
round);
break;
}
round++;
Expand Down Expand Up @@ -843,7 +845,13 @@ BnetPtr Rebuffer::bufferForTiming(const BnetPtr& tree,
tree);

if (top_opts.empty()) {
logger_->critical(RSZ, 2009, "buffering pin {}: no options produced");
logger_->warn(
RSZ,
2009,
"Skipping buffering because no valid buffering solution satisfying the "
"design rules can be found for net connected to pin {}.",
network_->name(pin_));
return nullptr;
}

FixedDelay best_slack = -FixedDelay::INF;
Expand Down
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