1 files changed, 27 insertions, 1 deletions
diff --git a/tests/various/shregmap.v b/tests/various/shregmap.v
index 56e05c2c0..604c2c976 100644
--- a/tests/various/shregmap.v
+++ b/tests/various/shregmap.v
@@ -1,4 +1,4 @@
-module shregmap_test(input i, clk, output [1:0] q);
+module shregmap_static_test(input i, clk, output [1:0] q);
 reg head = 1'b0;
 reg [3:0] shift1 = 4'b0000;
 reg [3:0] shift2 = 4'b0000;
@@ -20,3 +20,29 @@ always @(posedge C)
     r <= { r[DEPTH-2:0], D };
 assign Q = r[DEPTH-1];
 endmodule
+
+module shregmap_variable_test(input i, clk, input [1:0] l1, l2, output [1:0] q);
+reg head = 1'b0;
+reg [3:0] shift1 = 4'b0000;
+reg [3:0] shift2 = 4'b0000;
+
+always @(posedge clk) begin
+    head <= i;
+    shift1 <= {shift1[2:0], head};
+    shift2 <= {shift2[2:0], head};
+end
+
+assign q = {shift2[l2], shift1[l1]};
+endmodule
+
+module $__XILINX_SHREG_(input C, D, input [1:0] L, output Q);
+parameter CLKPOL = 1;
+parameter ENPOL = 1;
+parameter DEPTH = 1;
+parameter [DEPTH-1:0] INIT = {DEPTH{1'b0}};
+reg [DEPTH-1:0] r = INIT;
+wire clk = C ^ CLKPOL;
+always @(posedge C)
+    r <= { r[DEPTH-2:0], D };
+assign Q = r[L];
+endmodule