heap: Fix ripup criterea (#1378)

Signed-off-by: gatecat <[email protected]>
YosysHQ · Oct 2, 2024 · 75d2ce6 · 75d2ce6
1 parent 65cf6d8
commit 75d2ce6
Showing 1 changed file with 2 additions and 2 deletions.
diff --git a/common/place/placer_heap.cc b/common/place/placer_heap.cc
@@ -890,7 +890,7 @@ class HeAPPlacer
             total_iters_noreset++;
             if (total_iters > int(solve_cells.size())) {
                 total_iters = 0;
-                ripup_radius = std::max(std::max(max_x, max_y), ripup_radius * 2);
+                ripup_radius = std::min(std::max(max_x, max_y), ripup_radius * 2);
             }
 
             if (total_iters_noreset > std::max(5000, 8 * int(ctx->cells.size()))) {
@@ -995,7 +995,7 @@ class HeAPPlacer
                             CellInfo *bound = ctx->getBoundBelCell(sz);
                             if (bound != nullptr) {
                                 // Only rip up cells without constraints
-                                if (bound->cluster != ClusterId())
+                                if (bound->cluster != ClusterId() || bound->belStrength > STRENGTH_WEAK)
                                     continue;
                                 ctx->unbindBel(bound->bel);
                             }