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authorTristan Gingold2014-12-07 11:40:58 +0100
committerTristan Gingold2014-12-07 11:40:58 +0100
commit2f4337f027ec97dd93642ea2db70873e9192fb3b (patch)
treed8c63b4cef84e33bae4e7018ce7abc07e0e3bd3c /testsuite/gna/perf02/mul_149.vhd
parentabe17103c669922a7349a7b2238d440b24d29f30 (diff)
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Add perf02 (performance issue).
Diffstat (limited to 'testsuite/gna/perf02/mul_149.vhd')
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diff --git a/testsuite/gna/perf02/mul_149.vhd b/testsuite/gna/perf02/mul_149.vhd
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+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;