Various improvements in test/vloghtb

tests/vloghtb/common.sh

@@ -1,7 +1,42 @@
-log_pass() {
+log_pass()
+{
 	printf "%-15s %s %s %s\n" "$1" "$2" "`printf "%20s" "$2" | tr -d a-zA-Z0-9_ | tr ' ' .`" "pass."
 }
 
-log_fail() {
+log_fail()
+{
 	printf "%-15s %s %s %s\n" "$1" "$2" "`printf "%20s" "$2" | tr -d a-zA-Z0-9_ | tr ' ' .`" "FAIL."
 }
+
+test_equiv()
+{
+	# Usage:
+	# test_equiv <test_name> <synth_script> <sat_options> <mod_name> <vlog_file>
+
+	mkdir -p log_test_$1
+	rm -f log_test_$1/$4.txt
+	rm -f log_test_$1/$4.err
+
+	if ! ../../yosys -q -l log_test_$1/$4.out - 2> /dev/null <<- EOT
+		read_verilog $5
+		proc;;
+
+		copy $4 gold
+		rename $4 work
+
+		cd work
+		$2
+		cd ..
+
+		miter -equiv -flatten -ignore_gold_x -make_outputs -make_outcmp gold work miter
+		sat $3 -verify -prove trigger 0 -show-inputs -show-outputs miter
+	EOT
+	then
+		log_fail test_$1 $4
+		mv log_test_$1/$4.out log_test_$1/$4.err
+		exit 1
+	fi
+
+	log_pass test_$1 $4
+	mv log_test_$1/$4.out log_test_$1/$4.txt
+}