2 files changed, 10 insertions, 0 deletions
diff --git a/generic/arch.cc b/generic/arch.cc
index daaa8118..f6c264bb 100644
--- a/generic/arch.cc
+++ b/generic/arch.cc
@@ -403,6 +403,15 @@ delay_t Arch::estimateDelay(WireId src, WireId dst) const
     return (dx + dy) * grid_distance_to_delay;
 }
 
+delay_t Arch::predictDelay(WireId src, WireId dst) const
+{
+    const WireInfo &s = wires.at(src);
+    const WireInfo &d = wires.at(dst);
+    int dx = abs(s.x - d.x);
+    int dy = abs(s.y - d.y);
+    return (dx + dy) * grid_distance_to_delay;
+}
+
 delay_t Arch::getBudgetOverride(NetInfo *net_info, int user_idx, delay_t budget) const { return budget; }
 
 // ---------------------------------------------------------------
diff --git a/generic/arch.h b/generic/arch.h
index e508e0e4..4e4dd663 100644
--- a/generic/arch.h
+++ b/generic/arch.h
@@ -194,6 +194,7 @@ struct Arch : BaseCtx
     const std::vector<GroupId> &getGroupGroups(GroupId group) const;
 
     delay_t estimateDelay(WireId src, WireId dst) const;
+    delay_t predictDelay(WireId src, WireId dst) const;
     delay_t getDelayEpsilon() const { return 0.01; }
     delay_t getRipupDelayPenalty() const { return 1.0; }
     float getDelayNS(delay_t v) const { return v; }