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drt: add -disable_auto_taper_ndr_nets flag to detailed_route#1
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Exposes AUTO_TAPER_NDR_NETS as a user-controllable option in the detailed_route Tcl command via a new -disable_auto_taper_ndr_nets flag. Fixes The-OpenROAD-Project#9995 Signed-off-by: GitHub Copilot <copilot@github.com> Agent-Logs-Url: https://github.com/hpretl/OpenROAD/sessions/bfe7f851-ca02-4d23-ae14-e570fbc76522 Co-authored-by: hpretl <57392031+hpretl@users.noreply.github.com>
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hpretl
April 24, 2026 15:37
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I finally implemented the feature "disable detailed-routing auto-taper per net", and it works like a charm on our AMS template repo. :)
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Summary
Exposes
AUTO_TAPER_NDR_NETSas a user-controllable option (without requiring recompilation), addressing issue #9995.A new
-disable_auto_taper_ndr_netsflag is added to thedetailed_routeTcl command. When passed, automatic tapering of NDR nets at pin connections is disabled. The default behavior (tapering enabled) is unchanged.Usage:
Changes
src/drt/include/drt/TritonRoute.h: AddedautoTaperNdrNetsfield (defaulttrue) toParamStructsrc/drt/src/TritonRoute.cpp: Setrouter_cfg_->AUTO_TAPER_NDR_NETSfrom params insetParams()src/drt/src/TritonRoute.i: Addedbool autoTaperNdrNetsparameter todetailed_route_cmdSWIG bindingsrc/drt/src/TritonRoute.tcl: Added-disable_auto_taper_ndr_netsflag to thedetailed_routeTcl commandsrc/drt/README.md: Documented the new flagTesting
No new test added as this is a simple flag pass-through of an existing internal option. Existing NDR tests (e.g.,
ndr_vias1,ndr_vias2,ndr_vias3) continue to exercise the default (enabled) code path.Fixes The-OpenROAD-Project#9995