testsuite/synth: add test for #1230

2 files changed, 41 insertions, 0 deletions

diff --git a/testsuite/synth/issue1230/delayline.vhdl b/testsuite/synth/issue1230/delayline.vhdl
new file mode 100644
index 000000000..153dd5916
--- /dev/null
+++ b/testsuite/synth/issue1230/delayline.vhdl
@@ -0,0 +1,34 @@
+library ieee;

+use ieee.std_logic_1164.all;

+use ieee.numeric_std.all;

+

+entity DelayLine is

+  generic (

+    Depth : natural := 2;

+    Width : natural := 16

+    );

+  

+  port(

+    din  : in  signed(Width-1 downto 0);

+    clk  : in  std_logic;

+    ce   : in  std_logic;

+    dout : out signed(Width-1 downto 0)

+    );

+end DelayLine;

+

+architecture behavioral of DelayLine is

+  type DelayType is array (0 to Depth-1) of signed(Width-1 downto 0);

+  signal DataBuffer : DelayType;

+begin

+  dout <= DataBuffer(Depth-1);

+  

+  process (clk)

+  begin

+    if rising_edge (clk) then

+      if (ce = '1') then

+        DataBuffer(0) <= din;

+        DataBuffer(1 to Depth-1) <= DataBuffer(0 to Depth-2); --XX

+      end if;

+    end if;

+  end process;

+end behavioral;

diff --git a/testsuite/synth/issue1230/testsuite.sh b/testsuite/synth/issue1230/testsuite.sh
new file mode 100755
index 000000000..547b21877
--- /dev/null
+++ b/testsuite/synth/issue1230/testsuite.sh
@@ -0,0 +1,7 @@
+#! /bin/sh
+
+. ../../testenv.sh
+
+synth -gdepth=1 DelayLine.vhdl -e > syn_delayline.vhdl
+
+echo "Test successful"