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author | Tristan Gingold | 2014-12-07 11:40:58 +0100 |
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committer | Tristan Gingold | 2014-12-07 11:40:58 +0100 |
commit | 2f4337f027ec97dd93642ea2db70873e9192fb3b (patch) | |
tree | d8c63b4cef84e33bae4e7018ce7abc07e0e3bd3c /testsuite/gna/perf02/mul_149.vhd | |
parent | abe17103c669922a7349a7b2238d440b24d29f30 (diff) | |
download | ghdl-2f4337f027ec97dd93642ea2db70873e9192fb3b.tar.gz ghdl-2f4337f027ec97dd93642ea2db70873e9192fb3b.tar.bz2 ghdl-2f4337f027ec97dd93642ea2db70873e9192fb3b.zip |
Add perf02 (performance issue).
Diffstat (limited to 'testsuite/gna/perf02/mul_149.vhd')
-rw-r--r-- | testsuite/gna/perf02/mul_149.vhd | 27 |
1 files changed, 27 insertions, 0 deletions
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; |