equivalent tiles: updated genfasm to produce a valid fasm output

Signed-off-by: Alessandro Comodi <[email protected]>

Author: acomodi

utils/fasm/src/fasm.cpp

@@ -168,7 +168,25 @@ std::string FasmWriterVisitor::build_clb_prefix(const t_pb *pb, const t_pb_graph
     clb_prefix = build_clb_prefix(pb, pb_graph_node->parent_pb_graph_node);
   }
 
-  const auto *pb_type = pb_graph_node->pb_type;
+  /*  Need to use the actual pb_type
+   *  There are three cases
+   *    1) pb_graph_node is the root_clb: in this case fasm prefixes could change because the clb could have been placed in an
+   *                                      equivalent tile.
+   *    2) pb_graph_node is the root_clb child: in case the clb has been placed in an equivalent tile, its child pb_types have
+   *                                            different fasm prefixes. (e.g. SLICEL_X0 becomes SLICEM_X0).
+   *    3) pb_graph_node is non of the above: in this case the fasm prefixes should be the same even if the clb is placed in an
+   *                                          equivalent tile.
+   *
+   *  XXX this is a temporary workaround.
+   */
+  t_pb_type *pb_type;
+  if (root_clb_ == pb_graph_node) {
+    pb_type = blk_type_->pb_type;
+  } else if (root_clb_ == pb_graph_node->parent_pb_graph_node) {
+    pb_type = blk_type_->pb_graph_head->child_pb_graph_nodes[mode_index][pb_graph_node->placement_index]->pb_type;
+  } else {
+    pb_type = pb_graph_node->pb_type;
+  }
 
   clb_prefix += handle_fasm_prefix(&pb_type->meta, pb_graph_node, pb_type);