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| author | David Shah <dave@ds0.me> | 2019-11-18 15:23:47 +0000 |
|---|---|---|
| committer | David Shah <dave@ds0.me> | 2020-02-03 11:38:30 +0000 |
| commit | 010e7ba8cbff440c10b4482da4e0f9bf4a9210fa (patch) | |
| tree | e1b06c3d9daa2ef3c89749c9d53889d9d5e64c73 | |
| parent | a8351b265fb7a8ddf91b78edb2d5ae0a39384c8b (diff) | |
| download | nextpnr-010e7ba8cbff440c10b4482da4e0f9bf4a9210fa.tar.gz nextpnr-010e7ba8cbff440c10b4482da4e0f9bf4a9210fa.tar.bz2 nextpnr-010e7ba8cbff440c10b4482da4e0f9bf4a9210fa.zip | |
router2: Add IPIN cost to model
Signed-off-by: David Shah <dave@ds0.me>
| -rw-r--r-- | common/router2.cc | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/common/router2.cc b/common/router2.cc index b189c6d1..ee298ae4 100644 --- a/common/router2.cc +++ b/common/router2.cc @@ -300,7 +300,9 @@ struct Router2 if (wd.bound_nets.count(net->udata)) source_uses = wd.bound_nets.at(net->udata).first; // FIXME: timing/wirelength balance? - return ctx->getDelayNS(ctx->estimateDelay(wire, sink)) / (1 + source_uses); + float ipin_cost = ctx->getDelayNS(ctx->getWireDelay(sink).maxDelay() + ctx->getDelayEpsilon()); + return std::max(0.0f, ctx->getDelayNS(ctx->estimateDelay(wire, sink)) - ipin_cost) / (1 + source_uses) + + ipin_cost; } bool check_arc_routing(NetInfo *net, size_t usr) |