Add support for more cell types to btor back-end

backends/btor/test_cells.sh

@@ -0,0 +1,30 @@
+#!/bin/bash
+
+set -ex
+
+rm -rf test_cells.tmp
+mkdir -p test_cells.tmp
+cd test_cells.tmp
+
+../../../yosys -p 'test_cell -n 5 -w test all /$alu /$fa /$lcu /$lut /$sop /$macc /$mul /$div /$mod /$shl /$shr /$sshl /$sshr /$shift /$shiftx'
+
+for fn in test_*.il; do
+	../../../yosys -p "
+		read_ilang $fn
+		rename gold gate
+		synth
+
+		read_ilang $fn
+		miter -equiv -make_assert -flatten gold gate main
+		hierarchy -top main
+		write_btor ${fn%.il}.btor
+	"
+	boolectormc -v ${fn%.il}.btor > ${fn%.il}.out
+	if grep " SATISFIABLE" ${fn%.il}.out; then
+		echo "Check failed for ${fn%.il}."
+		exit 1
+	fi
+done
+
+echo "OK."
+