From 5e1aac67db4bec579ca9e8075aa32e4183d1004f Mon Sep 17 00:00:00 2001
From: David Shah <dave@ds0.me>
Date: Thu, 16 Jan 2020 12:00:52 +0000
Subject: ecp5: Improve bounding box accuracy

Signed-off-by: David Shah <dave@ds0.me>
---
 ecp5/arch.cc       | 23 +++++++++++++++++++----
 ecp5/arch_place.cc | 21 +++++++++++++++------
 2 files changed, 34 insertions(+), 10 deletions(-)

(limited to 'ecp5')

diff --git a/ecp5/arch.cc b/ecp5/arch.cc
index e620b3a3..a10be174 100644
--- a/ecp5/arch.cc
+++ b/ecp5/arch.cc
@@ -496,6 +496,19 @@ delay_t Arch::estimateDelay(WireId src, WireId dst) const
 ArcBounds Arch::getRouteBoundingBox(WireId src, WireId dst) const
 {
     ArcBounds bb;
+
+    bb.x0 = src.location.x;
+    bb.y0 = src.location.y;
+    bb.x1 = src.location.x;
+    bb.y1 = src.location.y;
+
+    auto extend = [&](int x, int y) {
+        bb.x0 = std::min(bb.x0, x);
+        bb.x1 = std::max(bb.x1, x);
+        bb.y0 = std::min(bb.y0, y);
+        bb.y1 = std::max(bb.y1, y);
+    };
+
     auto est_location = [&](WireId w) -> std::pair<int, int> {
         const auto &wire = locInfo(w)->wire_data[w.index];
         if (w == gsrclk_wire) {
@@ -516,16 +529,18 @@ ArcBounds Arch::getRouteBoundingBox(WireId src, WireId dst) const
     };
 
     auto src_loc = est_location(src);
+    extend(src_loc.first, src_loc.second);
+    if (wire_loc_overrides.count(src)) {
+        extend(wire_loc_overrides.at(src).first, wire_loc_overrides.at(src).second);
+    }
     std::pair<int, int> dst_loc;
+    extend(dst.location.x, dst.location.y);
     if (wire_loc_overrides.count(dst)) {
         dst_loc = wire_loc_overrides.at(dst);
     } else {
         dst_loc = est_location(dst);
     }
-    bb.x0 = std::min(src_loc.first, dst_loc.first);
-    bb.y0 = std::min(src_loc.second, dst_loc.second);
-    bb.x1 = std::max(src_loc.first, dst_loc.first);
-    bb.y1 = std::max(src_loc.second, dst_loc.second);
+    extend(dst_loc.first, dst_loc.second);
     return bb;
 }
 
diff --git a/ecp5/arch_place.cc b/ecp5/arch_place.cc
index 6057605b..c5330694 100644
--- a/ecp5/arch_place.cc
+++ b/ecp5/arch_place.cc
@@ -203,17 +203,26 @@ void Arch::setupWireLocations()
         CellInfo *ci = cell.second;
         if (ci->bel == BelId())
             continue;
-        if (ci->type == id_MULT18X18D || ci->type == id_DCUA) {
+        if (ci->type == id_MULT18X18D || ci->type == id_DCUA || ci->type == id_DDRDLL || ci->type == id_DQSBUFM ||
+            ci->type == id_EHXPLLL) {
             for (auto &port : ci->ports) {
-                if (port.second.type != PORT_IN || port.second.net == nullptr)
+                if (port.second.net == nullptr)
                     continue;
                 WireId pw = getBelPinWire(ci->bel, port.first);
                 if (pw == WireId())
                     continue;
-                for (auto uh : getPipsUphill(pw)) {
-                    WireId pip_src = getPipSrcWire(uh);
-                    wire_loc_overrides[pw] = std::make_pair(pip_src.location.x, pip_src.location.y);
-                    break;
+                if (port.second.type == PORT_OUT) {
+                    for (auto dh : getPipsDownhill(pw)) {
+                        WireId pip_dst = getPipDstWire(dh);
+                        wire_loc_overrides[pw] = std::make_pair(pip_dst.location.x, pip_dst.location.y);
+                        break;
+                    }
+                } else {
+                    for (auto uh : getPipsUphill(pw)) {
+                        WireId pip_src = getPipSrcWire(uh);
+                        wire_loc_overrides[pw] = std::make_pair(pip_src.location.x, pip_src.location.y);
+                        break;
+                    }
                 }
             }
         }
-- 
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