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gowin: Himbaechel. Improve the global router

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A small improvement - do not waste time analyzing already processed
networks in the previous step (and possibly steps).

Signed-off-by: YRabbit <rabbit@yrabbit.cyou>
This commit is contained in:
YRabbit 2024-02-11 10:52:05 +10:00 committed by myrtle
parent 05ed9308d6
commit 4981ebb698
1 changed files with 11 additions and 2 deletions
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13
himbaechel/uarch/gowin/globals.cc
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@ -286,12 +286,14 @@ struct GowinGlobalRouter
void run(void) void run(void)
{ {
log_info("Routing globals...\n"); log_info("Routing globals...\n");
std::vector<IdString> routed_nets;
// buffered nets first // buffered nets first
for (auto &net : ctx->nets) { for (auto &net : ctx->nets) {
NetInfo *ni = net.second.get(); NetInfo *ni = net.second.get();
CellInfo *drv = ni->driver.cell; CellInfo *drv = ni->driver.cell;
if (drv == nullptr || ni->users.empty()) { if (drv == nullptr || ni->users.empty()) {
if (ctx->verbose) { if (ctx->debug) {
log_info("skip empty or driverless net:%s\n", ctx->nameOf(ni)); log_info("skip empty or driverless net:%s\n", ctx->nameOf(ni));
} }
continue; continue;
@ -301,14 +303,21 @@ struct GowinGlobalRouter
log_info("route buffered net '%s'\n", ctx->nameOf(ni)); log_info("route buffered net '%s'\n", ctx->nameOf(ni));
} }
route_buffered_net(ni); route_buffered_net(ni);
routed_nets.push_back(net.first);
continue; continue;
} }
} }
for (auto &net : ctx->nets) { for (auto &net : ctx->nets) {
if (std::find(routed_nets.begin(), routed_nets.end(), net.first) != routed_nets.end()) {
if (ctx->debug) {
log_info("skip already routed net:%s\n", net.first.c_str(ctx));
}
continue;
}
NetInfo *ni = net.second.get(); NetInfo *ni = net.second.get();
CellInfo *drv = ni->driver.cell; CellInfo *drv = ni->driver.cell;
if (drv == nullptr || ni->users.empty()) { if (drv == nullptr || ni->users.empty()) {
if (ctx->verbose) { if (ctx->debug) {
log_info("skip empty or driverless net:%s\n", ctx->nameOf(ni)); log_info("skip empty or driverless net:%s\n", ctx->nameOf(ni));
} }
continue; continue;