Merge pull request The-OpenROAD-Project#4991 from AcKoucher/mpl2-glob…

…al-align

mpl2: post-annealing step to push macros to boundaries

src/mpl2/doc/debugMessages.md

@@ -1,7 +1,8 @@
 # MPL2 Debug Messages
 
 MPL2 debug messages are divided in:
-- 4 groups according to HierRTLMP flow stages.
+- 5 groups according to HierRTLMP flow stages.
+- 1 group for a post-process stage responsible for pushing the macros to the boundaries if possible.
 - 1 group for the special case in which bus planning is used.
 
 ## Groups
@@ -34,11 +35,17 @@ MPL2 debug messages are divided in:
     * Clusters' connections;
     * Simulated annealing results for both SoftMacro and HardMacro.
 
+### Orientation Improvement
+- Group Name: `flipping`
+- Levels:
+1. Print the wire length before and after flipping
+
+### Boundary Push
+- Group Name: `boundary_push`
+- Levels:
+1. Print name of the macro cluster currently being pushed, its distance to the close boundaries and a message if the move was not possible due to overlap.
+
 ### Bus Planning
 Special case for bus planning with a single level.
 - Group Name: `bus_planning`
 
-### Fine Shaping
-- Group Name: `flipping`
-- Levels:
-1. Print the wire length before and after flipping

src/mpl2/src/bus_synthesis.cpp

@@ -1030,7 +1030,7 @@ bool calNetPaths(std::vector<SoftMacro>& soft_macros,     // placed soft macros
     debugPrint(logger, MPL, "bus_planning", 1, "working on path {}", i);
     auto target_cluster
         = soft_macros[nets[path_net_map[i]].terminals.second].getCluster();
-    PinAccess src_pin = NONE;
+    Boundary src_pin = NONE;
     Cluster* pre_cluster = nullptr;
     int last_edge_id = -1;
     const float net_weight = nets[path_net_map[i]].weight;

src/mpl2/src/bus_synthesis.h

@@ -102,7 +102,7 @@ struct Edge
   std::pair<int, int> terminals;  // the vertex_id of two terminal vertices
   bool direction = false;         // True for horizontal and False for vertical
   bool internal = true;  // True for edge within one SoftMacro otherwise false
-  PinAccess pin_access
+  Boundary pin_access
       = NONE;            // pin_access for internal == false (for src vertex)
   float length = 0.0;    // the length of edge
   float length_w = 0.0;  // weighted length : weight * length