From 2f4337f027ec97dd93642ea2db70873e9192fb3b Mon Sep 17 00:00:00 2001 From: Tristan Gingold Date: Sun, 7 Dec 2014 11:40:58 +0100 Subject: Add perf02 (performance issue). --- testsuite/gna/perf02/mul_149.vhd | 27 +++++++++++++++++++++++++++ 1 file changed, 27 insertions(+) create mode 100644 testsuite/gna/perf02/mul_149.vhd (limited to 'testsuite/gna/perf02/mul_149.vhd') diff --git a/testsuite/gna/perf02/mul_149.vhd b/testsuite/gna/perf02/mul_149.vhd new file mode 100644 index 0000000..d689294 --- /dev/null +++ b/testsuite/gna/perf02/mul_149.vhd @@ -0,0 +1,27 @@ +library ieee; +use ieee.std_logic_1164.all; + +library ieee; +use ieee.numeric_std.all; + +entity mul_149 is + port ( + output : out std_logic_vector(63 downto 0); + in_a : in std_logic_vector(32 downto 0); + in_b : in std_logic_vector(31 downto 0) + ); +end mul_149; + +architecture augh of mul_149 is + + signal tmp_res : signed(64 downto 0); + +begin + + -- The actual multiplication + tmp_res <= signed(in_a) * signed(in_b); + + -- Set the output + output <= std_logic_vector(tmp_res(63 downto 0)); + +end architecture; -- cgit