techmap: add TCL test for Han-Carlson adder

tests/techmap/han-carlson.tcl

@@ -0,0 +1,14 @@
+yosys -import
+
+read_verilog +/choices/han-carlson.v
+read_verilog lcu_refined.v
+design -save init
+
+for {set i 1} {$i <= 16} {incr i} {
+    design -load init
+    chparam -set WIDTH $i
+    yosys proc
+    equiv_make -blacklist han-carlson.nomatch lcu _85_lcu_han_carlson equiv
+    equiv_simple equiv
+    equiv_status -assert equiv
+}