[vpr][place] check lower_iter afer adjustment

Author: amin1377

vpr/src/place/move_utils.cpp

@@ -1040,14 +1040,13 @@ bool find_compatible_compressed_loc_in_range(t_logical_block_type_ptr type,
         //The candidates are stored in a flat_map so we can efficiently find the set of valid
         //candidates with upper/lower bound.
         const auto& block_rows = compressed_block_grid.get_column_block_map(to_loc.x, to_layer_num);
+        if (!fixed_search_range) {
+            adjust_y_axis_search_range(search_range, block_rows);
+        }
         auto y_lower_iter = block_rows.lower_bound(search_range.ymin);
         if (y_lower_iter == block_rows.end()) {
             continue;
         }
-        if (!fixed_search_range) {
-            adjust_y_axis_search_range(search_range, block_rows);
-        }
-
         y_lower_iter = block_rows.lower_bound(search_range.ymin);
         auto y_upper_iter = block_rows.upper_bound(search_range.ymax);
         int y_range = std::distance(y_lower_iter, y_upper_iter);