testsuite/synth: add a test for #2046

2 files changed, 95 insertions, 0 deletions

diff --git a/testsuite/synth/issue2046/engine.vhdl b/testsuite/synth/issue2046/engine.vhdl
new file mode 100644
index 000000000..ea9fda89d
--- /dev/null
+++ b/testsuite/synth/issue2046/engine.vhdl
@@ -0,0 +1,88 @@
+library ieee;
+use ieee.std_logic_1164.all;
+
+entity phony is
+	generic (
+		INDEX : natural := 0
+	);
+	port (
+		i : in  std_logic;
+		o : out std_logic
+	);
+end entity;
+
+architecture synth of phony is
+
+	signal o6 : std_logic := '0';
+
+	component LUT6 is
+		generic (
+			INIT : bit_vector
+		);
+		port (
+			O  : out std_logic;
+			I0 : in  std_logic;
+			I1 : in  std_logic;
+			I2 : in  std_logic;
+			I3 : in  std_logic;
+			I4 : in  std_logic;
+			I5 : in  std_logic
+		);
+	end component;
+
+begin
+
+	lutA : LUT6
+		generic map (
+			INIT => x"0123456789012345"
+		)
+		port map (
+			O  => o6,
+			I0 => i,
+			I1 => i,
+			I2 => i,
+			I3 => i,
+			I4 => i,
+			I5 => i
+		);
+
+	o <= o6;
+
+end architecture;
+
+library ieee;
+use ieee.std_logic_1164.all;
+
+library work;
+use work.all;
+
+entity engine is
+	generic (
+		SIZE : natural := 1000
+	);
+	port (
+		i : in  std_logic;
+		o : out std_logic
+	);
+end entity;
+
+architecture synth of engine is
+
+begin
+
+	chunks : for b in 0 to SIZE-1 generate
+
+		ph : entity phony
+			generic map (
+				INDEX => b
+			)
+			port map (
+				i => i,
+				o => open
+			);
+
+	end generate;
+
+	o <= i;
+
+end architecture;
diff --git a/testsuite/synth/issue2046/testsuite.sh b/testsuite/synth/issue2046/testsuite.sh
new file mode 100755
index 000000000..47b5b5097
--- /dev/null
+++ b/testsuite/synth/issue2046/testsuite.sh
@@ -0,0 +1,7 @@
+#! /bin/sh
+
+. ../../testenv.sh
+
+synth --std=08 -gsize=4000 engine.vhdl -e > syn_engine.vhdl
+
+echo "Test successful"