testsuite/synth: add test for #1100.

1 files changed, 30 insertions, 0 deletions

diff --git a/testsuite/synth/issue1100/tb_repro.vhdl b/testsuite/synth/issue1100/tb_repro.vhdl
new file mode 100644
index 000000000..f1394d1ad
--- /dev/null
+++ b/testsuite/synth/issue1100/tb_repro.vhdl
@@ -0,0 +1,30 @@
+entity tb_repro is
+end tb_repro;
+
+library ieee;
+use ieee.std_logic_1164.all;
+
+architecture behav of tb_repro is
+  signal val   : std_logic_vector (63 downto 0);
+  signal iperm : std_logic_vector (3*8 - 1 downto 0) := (others => '0');
+  signal en    : std_ulogic;
+  signal res   : std_logic_vector (63 downto 0);
+begin
+  dut: entity work.repro
+    port map (val, iperm, en, res);
+
+  process
+  begin
+    val <= x"01_23_45_67_89_ab_cd_ef";
+    en <= '1';
+    iperm <= o"76543210";
+    wait for 1 ns;
+    assert res = x"01_23_45_67_89_ab_cd_ef"severity failure;
+
+    iperm <= o"01234567";
+    wait for 1 ns;
+    assert res = x"ef_cd_ab_89_67_45_23_01"
+      report to_hstring(res) severity failure;
+wait;
+  end process;
+end behav;