route: global route now writes out .sdc file

Since global route can run timing repair, it must
write out an .sdc file and it must be used
going forward.

Signed-off-by: Øyvind Harboe <[email protected]>

Author: oharboe

flow/Makefile

@@ -786,7 +786,7 @@ $(eval $(call do-step,5_3_fillcell,$(RESULTS_DIR)/5_2_route.odb,fillcell))
 
 $(eval $(call do-copy,5_route,5_3_fillcell.odb))
 
-$(eval $(call do-copy,5_route,4_cts.sdc,,.sdc))
+$(eval $(call do-copy,5_route,5_1_grt.sdc,,.sdc))
 
 .PHONY: do-route
 do-route:

flow/scripts/detail_route.tcl

@@ -1,6 +1,6 @@
 utl::set_metrics_stage "detailedroute__{}"
 source $::env(SCRIPTS_DIR)/load.tcl
-load_design 5_1_grt.odb 4_cts.sdc
+load_design 5_1_grt.odb 5_1_grt.sdc
 if {![grt::have_routes]} {
   error "Global routing failed, run `make gui_grt` and load $::global_route_congestion_report \
         in DRC viewer to view congestion"

flow/scripts/fillcell.tcl

@@ -1,7 +1,7 @@
 source $::env(SCRIPTS_DIR)/load.tcl
 erase_non_stage_variables route
 if {[env_var_exists_and_non_empty FILL_CELLS]} {
-  load_design 5_2_route.odb 4_cts.sdc
+  load_design 5_2_route.odb 5_1_grt.sdc
 
   set_propagated_clock [all_clocks]
 

flow/scripts/global_route.tcl

@@ -109,6 +109,7 @@ proc global_route_helper {} {
 
   write_guides $::env(RESULTS_DIR)/route.guide
   write_db $::env(RESULTS_DIR)/5_1_grt.odb
+  write_sdc -no_timestamp $::env(RESULTS_DIR)/5_1_grt.sdc
 }
 
 global_route_helper