Add regression test for multiple names in ANSI UDP inputs

Check that the parser accepts grouped input names, including a second
input declaration in the same UDP port list.

Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>

Author: larsclausen

ivtest/ivltests/udp_ansi_input_list.v

@@ -0,0 +1,24 @@
+// Check that an ANSI UDP input declaration can contain multiple port names.
+
+primitive p(output o, input a, b, input c, d);
+  table
+    0 1 0 1 : 1;
+  endtable
+endprimitive
+
+module test;
+
+  wire o;
+
+  p i_p(o, 1'b0, 1'b1, 1'b0, 1'b1);
+
+  initial begin
+    #1;
+    if (o !== 1'b1) begin
+      $display("FAILED: o=%b", o);
+    end else begin
+      $display("PASSED");
+    end
+  end
+
+endmodule

ivtest/regress-vvp.list

@@ -845,6 +845,7 @@ timing_check_syntax		vvp_tests/timing_check_syntax.json
 timing_check_delayed_signals	vvp_tests/timing_check_delayed_signals.json
 udp_ansi_initial_nonreg_fail	vvp_tests/udp_ansi_initial_nonreg_fail.json
 udp_ansi_initial_reg		vvp_tests/udp_ansi_initial_reg.json
+udp_ansi_input_list			vvp_tests/udp_ansi_input_list.json
 udp_empty_table_fail		vvp_tests/udp_empty_table_fail.json
 udp_initial_nonreg_fail		vvp_tests/udp_initial_nonreg_fail.json
 udp_instance_reference_order	vvp_tests/udp_instance_reference_order.json

ivtest/vvp_tests/udp_ansi_input_list.json

@@ -0,0 +1,5 @@
+{
+    "type"          : "normal",
+    "source"        : "udp_ansi_input_list.v",
+    "iverilog-args" : [ "-g2001" ]
+}