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GRT: add options for repair antennas #9181

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f6cff6c
grt: add flags to restrict the use of jumpers and diodes in repair an…
luis201420 Dec 29, 2025
01377be
grt: add the allow_congestion flag to the repair_antennas command
luis201420 Dec 29, 2025
8bd6432
Merge remote-tracking branch 'origin' into grt_add_flags_to_repair_an…
luis201420 Dec 31, 2025
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2 changes: 2 additions & 0 deletions src/grt/include/grt/GlobalRouter.h
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Original file line number Diff line number Diff line change
Expand Up @@ -201,6 +201,8 @@ class GlobalRouter
int repairAntennas(odb::dbMTerm* diode_mterm,
int iterations,
float ratio_margin,
bool jumper_only,
bool diode_only,
int num_threads = 1);
void updateResources(const int& init_x,
const int& init_y,
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6 changes: 4 additions & 2 deletions src/grt/src/GlobalRouter.cpp
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Expand Up @@ -448,6 +448,8 @@ void GlobalRouter::updateDbCongestion()
int GlobalRouter::repairAntennas(odb::dbMTerm* diode_mterm,
int iterations,
float ratio_margin,
bool jumper_only,
bool diode_only,
const int num_threads)
{
if (!initialized_ || haveDetailedRoutes()) {
Expand Down Expand Up @@ -504,7 +506,7 @@ int GlobalRouter::repairAntennas(odb::dbMTerm* diode_mterm,
// if run in GRT and it need run jumper insertion
std::vector<odb::dbNet*> nets_with_jumpers;
if (!haveDetailedRoutes(nets_to_repair)
&& repair_antennas_->hasNewViolations()) {
&& repair_antennas_->hasNewViolations() && !diode_only) {
// Run jumper insertion and clean
repair_antennas_->jumperInsertion(routes_,
grid_->getTileSize(),
Expand All @@ -523,7 +525,7 @@ int GlobalRouter::repairAntennas(odb::dbMTerm* diode_mterm,
num_threads);
updateDbCongestion();
}
if (violations) {
if (violations && !jumper_only) {
IncrementalGRoute incr_groute(this, block_);
repair_antennas_->repairAntennas(diode_mterm);
total_diodes_count_ += repair_antennas_->getDiodesCount();
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4 changes: 2 additions & 2 deletions src/grt/src/GlobalRouter.i
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Expand Up @@ -165,10 +165,10 @@ route_layer_lengths(odb::dbNet* db_net)
}

int
repair_antennas(odb::dbMTerm* diode_mterm, int iterations, float ratio_margin)
repair_antennas(odb::dbMTerm* diode_mterm, int iterations, float ratio_margin, bool jumper_only, bool diode_only)
{
const int num_threads = ord::OpenRoad::openRoad()->getThreadCount();
return getGlobalRouter()->repairAntennas(diode_mterm, iterations, ratio_margin, num_threads);
return getGlobalRouter()->repairAntennas(diode_mterm, iterations, ratio_margin, jumper_only, diode_only, num_threads);
}

void
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19 changes: 16 additions & 3 deletions src/grt/src/GlobalRouter.tcl
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Expand Up @@ -241,11 +241,14 @@ proc global_route { args } {

sta::define_cmd_args "repair_antennas" { diode_cell \
[-iterations iterations] \
[-ratio_margin ratio_margin]}
[-ratio_margin ratio_margin] \
[-jumper_only] \
[-diode_only] \
[-allow_congestion]}
Comment on lines +245 to +247
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@gemini-code-assist gemini-code-assist bot Dec 31, 2025

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medium

The indentation for the new flags uses tabs, while the existing code in this block uses spaces for alignment. For consistency with the surrounding code, please use spaces instead of tabs.

                                         [-jumper_only] \
                                         [-diode_only] \
                                         [-allow_congestion]}


proc repair_antennas { args } {
sta::parse_key_args "repair_antennas" args \
keys {-iterations -ratio_margin} flags {}
keys {-iterations -ratio_margin} flags {-jumper_only -diode_only -allow_congestion}
if { [ord::get_db_block] == "NULL" } {
utl::error GRT 104 "No design block found."
}
Expand Down Expand Up @@ -285,6 +288,16 @@ proc repair_antennas { args } {
sta::check_positive_integer "-iterations" $iterations
}

set allow_congestion [info exists flags(-allow_congestion)]
grt::set_allow_congestion $allow_congestion

set jumper_only [info exists flags(-jumper_only)]
set diode_only [info exists flags(-diode_only)]

if { $jumper_only && $diode_only } {
utl::error GRT 294 "Only use either -jumper_only or -diode_only flag"
}

set ratio_margin 0
if { [info exists keys(-ratio_margin)] } {
set ratio_margin $keys(-ratio_margin)
Expand All @@ -293,7 +306,7 @@ proc repair_antennas { args } {
}
}

return [grt::repair_antennas $diode_mterm $iterations $ratio_margin]
return [grt::repair_antennas $diode_mterm $iterations $ratio_margin $jumper_only $diode_only]
} else {
utl::error GRT 45 "Run global_route before repair_antennas."
}
Expand Down