Merge pull request The-OpenROAD-Project#3203 from jeffng-or/asap7-cva6-hier

added desired grouping for demo - hier synthesis

Author: maliberty

flow/designs/asap7/cva6/config.mk

@@ -88,5 +88,8 @@ export MACRO_HALO             = 5 5
 # few last gasp iterations
 export SKIP_LAST_GASP ?= 1
 
+ifeq ($(SYNTH_HIERARCHICAL),1)
+	export SYNTH_MINIMUM_KEEP_SIZE ?= 40000
+endif
 
 export SYNTH_HDL_FRONTEND = slang