synth: add a test for previous commit.

1 files changed, 30 insertions, 0 deletions

diff --git a/testsuite/synth/func01/func01.vhdl b/testsuite/synth/func01/func01.vhdl
new file mode 100644
index 000000000..67d203907
--- /dev/null
+++ b/testsuite/synth/func01/func01.vhdl
@@ -0,0 +1,30 @@
+library ieee;
+use ieee.std_logic_1164.all;
+
+entity func01 is
+  generic (l : natural := 3);
+  port (a : std_logic_vector (7 downto 0);
+        sel : std_logic;
+        b : out std_logic_vector (7 downto 0));
+end func01;
+
+architecture behav of func01 is
+  function gen_mask (len : natural) return std_logic_vector is
+    variable res : std_logic_vector (7 downto 0);
+  begin
+    res := (others => '0');
+    res (len downto 0) := (others => '1');
+    return res;
+  end gen_mask;
+
+begin
+  process (a, sel)
+  begin
+    if sel = '1' then
+      b <= a and gen_mask (l);
+    else
+      b <= a;
+    end if;
+  end process;
+end behav;
+