Add regression test for delayed real assignments

Check that a blocking intra-assignment delay on a real value preserves the
assigned value after the delay.

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

ivtest/ivltests/real_delay_assign.v

@@ -0,0 +1,20 @@
+// Check that blocking intra-assignment delays can assign real values.
+
+module test;
+  real r;
+  reg failed;
+
+  initial begin
+    failed = 1'b0;
+
+    r = #1 1.25;
+    if (r != 1.25) begin
+      $display("FAILED(%0d). Expected 1.25, got %0.2f", `__LINE__, r);
+      failed = 1'b1;
+    end
+
+    if (!failed) begin
+      $display("PASSED");
+    end
+  end
+endmodule

ivtest/regress-vvp.list

@@ -213,6 +213,7 @@ pv_wr_fn_vec2			vvp_tests/pv_wr_fn_vec2.json
 pv_wr_fn_vec4			vvp_tests/pv_wr_fn_vec4.json
 queue_fail			vvp_tests/queue_fail.json
 readmem-invalid			vvp_tests/readmem-invalid.json
+real_delay_assign		vvp_tests/real_delay_assign.json
 real_negative_zero		vvp_tests/real_negative_zero.json
 real_unary_minus_inf		vvp_tests/real_unary_minus_inf.json
 real_unary_minus_nan		vvp_tests/real_unary_minus_nan.json

ivtest/vvp_tests/real_delay_assign.json

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