Add regression test for issue steveicarus#1099

Author: martinwhitaker

ivtest/ivltests/br_gh1099.v

@@ -0,0 +1,24 @@
+module top;
+    reg [3:0] inp1;
+    reg signed [3:0] inp2;
+    wire [4:0] out1, out2;
+    initial begin
+        $monitor("%b %b %b %b", inp1, inp2, out1, out2);
+        #1 inp1 = 4'b1111;
+        #1 inp2 = 4'b1111;
+        #1;
+        if ((out1 === 5'b01111) && (out2 === 5'b01111))
+            $display("PASSED");
+        else
+            $display("FAILED");
+    end
+    mod m1({inp1}, out1);
+    mod m2({inp2}, out2);
+endmodule
+
+module mod(
+    input [4:0] inp,
+    output [4:0] out
+);
+    assign out = inp;
+endmodule

ivtest/regress-vvp.list

@@ -42,6 +42,7 @@ br_gh1087a2			vvp_tests/br_gh1087a2.json
 br_gh1087a3			vvp_tests/br_gh1087a3.json
 br_gh1087b			vvp_tests/br_gh1087b.json
 br_gh1087c			vvp_tests/br_gh1087c.json
+br_gh1099			vvp_tests/br_gh1099.json
 ca_time_real`			vvp_tests/ca_time_real.json
 case1				vvp_tests/case1.json
 case2				vvp_tests/case2.json

ivtest/vvp_tests/br_gh1099.json

@@ -0,0 +1,4 @@
+{
+    "type"   : "normal",
+    "source" : "br_gh1099.v"
+}