1 files changed, 5 insertions, 0 deletions
diff --git a/common/placer_heap.h b/common/placer_heap.h
index 94ac5229..4bcf71e8 100644
--- a/common/placer_heap.h
+++ b/common/placer_heap.h
@@ -40,8 +40,13 @@ struct PlacerHeapCfg
     float timingWeight;
     bool timing_driven;
     float solverTolerance;
+    bool placeAllAtOnce;
 
+    // These cell types will be randomly locked to prevent singular matrices
     std::unordered_set<IdString> ioBufTypes;
+    // These cell types are part of the same unit (e.g. slices split into
+    // components) so will always be spread together
+    std::vector<std::unordered_set<IdString>> cellGroups;
 };
 
 extern bool placer_heap(Context *ctx, PlacerHeapCfg cfg);