Add regression tests for UDP names shadowing type identifiers

Check that UDP primitive and port names can shadow visible type identifiers.
Cover old-style UDP declarations, including input and output declarations and
the initial target, as well as ANSI-style UDP port declarations.

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

ivtest/ivltests/sv_type_identifier_udp_ansi_name.v

@@ -0,0 +1,25 @@
+// Check that ANSI-style UDP names can shadow visible type identifiers.
+
+package p;
+  typedef int ANSI_UDP;
+  typedef int Y;
+  typedef int I0;
+  typedef int I1;
+endpackage
+
+import p::*;
+
+primitive ANSI_UDP (output Y, input I0, input I1);
+  table
+    00 : 0;
+    01 : 0;
+    10 : 0;
+    11 : 1;
+  endtable
+endprimitive
+
+module test;
+  initial begin
+    $display("PASSED");
+  end
+endmodule

ivtest/ivltests/sv_type_identifier_udp_name.v

@@ -0,0 +1,29 @@
+// Check that old-style UDP names can shadow visible type identifiers.
+
+package p;
+  typedef int OLD_UDP;
+  typedef int Q;
+  typedef int A;
+  typedef int B;
+endpackage
+
+import p::*;
+
+primitive OLD_UDP (Q, A, B);
+  output reg Q;
+  input A, B;
+  initial Q = 0;
+
+  table
+    00 : ? : 0;
+    01 : ? : 0;
+    10 : ? : 0;
+    11 : ? : 1;
+  endtable
+endprimitive
+
+module test;
+  initial begin
+    $display("PASSED");
+  end
+endmodule

ivtest/regress-vvp.list

@@ -403,6 +403,8 @@ sv_type_identifier_port_name	vvp_tests/sv_type_identifier_port_name.json
 sv_type_identifier_specparam_name	vvp_tests/sv_type_identifier_specparam_name.json
 sv_type_identifier_task_function_argument_name	vvp_tests/sv_type_identifier_task_function_argument_name.json
 sv_type_identifier_task_name	vvp_tests/sv_type_identifier_task_name.json
+sv_type_identifier_udp_ansi_name	vvp_tests/sv_type_identifier_udp_ansi_name.json
+sv_type_identifier_udp_name	vvp_tests/sv_type_identifier_udp_name.json
 sv_type_identifier_variable_name	vvp_tests/sv_type_identifier_variable_name.json
 sv_type_param_restrict_class1	vvp_tests/sv_type_param_restrict_class1.json
 sv_type_param_restrict_class2	vvp_tests/sv_type_param_restrict_class2.json

ivtest/vvp_tests/sv_type_identifier_udp_ansi_name.json

@@ -0,0 +1,5 @@
+{
+    "type"          : "normal",
+    "source"        : "sv_type_identifier_udp_ansi_name.v",
+    "iverilog-args" : [ "-g2005-sv" ]
+}

ivtest/vvp_tests/sv_type_identifier_udp_name.json

@@ -0,0 +1,5 @@
+{
+    "type"          : "normal",
+    "source"        : "sv_type_identifier_udp_name.v",
+    "iverilog-args" : [ "-g2005-sv" ]
+}