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-rw-r--r--fpga_interchange/site_router.cc4
1 files changed, 4 insertions, 0 deletions
diff --git a/fpga_interchange/site_router.cc b/fpga_interchange/site_router.cc
index 12dce9f5..fbb87c00 100644
--- a/fpga_interchange/site_router.cc
+++ b/fpga_interchange/site_router.cc
@@ -706,6 +706,8 @@ static bool route_site(SiteArch *ctx, SiteRoutingCache *site_routing_cache, Rout
expansions.reserve(ctx->nets.size());
for (auto &net_pair : ctx->nets) {
+ if (net_pair.first->driver.cell == nullptr)
+ continue;
SiteNetInfo *net = &net_pair.second;
if (net->net->loop == nullptr) {
@@ -792,6 +794,8 @@ void check_routing(const SiteArch &site_arch)
{
for (auto &net_pair : site_arch.nets) {
const NetInfo *net = net_pair.first;
+ if (net->driver.cell == nullptr)
+ continue;
const SiteNetInfo &net_info = net_pair.second;
for (const auto &user : net_info.users) {