$_XILINX_SHREG_ to preserve src attribute

diff --git a/passes/techmap/shregmap.cc b/passes/techmap/shregmap.cc
index bd75cd95e141fb1002fa941bbd3e2ad64171f1b7..ec43b56542848fb29d3d15efdaadc7466db93adb 100644 (file)
--- a/passes/techmap/shregmap.cc
+++ b/passes/techmap/shregmap.cc
@@ -232,6 +232,7 @@ struct ShregmapTechXilinx7 : ShregmapTech
                log_assert(it != sigbit_to_shiftx_offset.end());
 
                auto newcell = cell->module->addCell(NEW_ID, "$__XILINX_SHREG_");
+               newcell->set_src_attribute(cell->get_src_attribute());
                newcell->setParam("\\DEPTH", cell->getParam("\\DEPTH"));
                newcell->setParam("\\INIT", cell->getParam("\\INIT"));
                newcell->setParam("\\CLKPOL", cell->getParam("\\CLKPOL"));