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author | David Shah <dave@ds0.me> | 2019-11-15 11:38:11 +0000 |
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committer | David Shah <dave@ds0.me> | 2020-02-03 11:38:30 +0000 |
commit | 385380401afb9f2f5cbfef766be30f39c3bbd34b (patch) | |
tree | c74330292b5f6028c1ef2ae8dfb98cc1d9dcee64 /common/router2.cc | |
parent | fa217a50a5aa9b1a915728bea035e368a376ceee (diff) | |
download | nextpnr-385380401afb9f2f5cbfef766be30f39c3bbd34b.tar.gz nextpnr-385380401afb9f2f5cbfef766be30f39c3bbd34b.tar.bz2 nextpnr-385380401afb9f2f5cbfef766be30f39c3bbd34b.zip |
router2: Deal with some special cases
Signed-off-by: David Shah <dave@ds0.me>
Diffstat (limited to 'common/router2.cc')
-rw-r--r-- | common/router2.cc | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/common/router2.cc b/common/router2.cc index b6875ef0..152878c6 100644 --- a/common/router2.cc +++ b/common/router2.cc @@ -572,7 +572,17 @@ struct Router2 auto &ad = nd.arcs.at(usr_idx); auto &usr = net->users.at(usr_idx); WireId src = ctx->getNetinfoSourceWire(net); + // Skip routes with no source + if (src == WireId()) + return true; WireId dst = ctx->getNetinfoSinkWire(net, usr); + // Skip routes where the destination is already bound + if (dst == WireId() || ctx->getBoundWireNet(dst) == net) + return true; + // Skip routes where there is no routing (special cases) + if (ad.wires.empty()) + return true; + WireId cursor = dst; std::vector<PipId> to_bind; |