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nexus: Improve error reporting for illegal carry chains

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Signed-off-by: gatecat <[email protected]>
This commit is contained in:
gatecat
2023-12-22 15:40:29 +01:00
committed by myrtle
parent 535709a9a9
commit 56587859d3
1 changed files with 7 additions and 1 deletions
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nexus/pack.cc
+7 -1
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@@ -1318,8 +1318,14 @@ struct NexusPacker
CellInfo *ci = cell.second.get();
if (ci->type != id_CCU2)
continue;
if (ci->getPort(id_CIN) != nullptr)
NetInfo *cin = ci->getPort(id_CIN);
if (cin) {
if (cin->driver.cell && cin->driver.cell->type != id_CCU2) {
log_error("CCU2 '%s' CIN net '%s' driven by non-CCU2 cell '%s'.\n",
ctx->nameOf(ci), ctx->nameOf(cin), ctx->nameOf(cin->driver.cell));
}
continue;
}
roots.push_back(ci);
}
for (CellInfo *root : roots) {