On Wednesday, 13 June 2018 at 06:46:43 UTC, Mike Franklin wrote:
I had a little fun today kicking the crap out of C's memcpy
with a D implementation.
https://github.com/JinShil/memcpyD
Request for help: I don't have a Linux system running on real
hardware at this time, nor do I have a wide range of platforms
and machines to test with. If you'd like to help me with this
potentially foolish endeavor, please run the program on your
hardware and send me the results.
Feedback, advise, and pull requests to improve the
implementation are most welcome.
Mike
I get this on Linux 4.16.3-gentoo, AMD FX(tm)-6100 Six-Core
Processor, 8GiB ram,
using ldc2 -O3L:
size memcpyC memcpyD
1 5 0
2 0 0
4 0 0
8 0 0
16 1519 0
32 1833 0
64 3816 0
128 7543 0
256 146500 0
512 194818 0
1024 329593 846142
2048 714945 1117132
4096 1596170 1803621
8192 5899818 6110026
16384 12338384 14141850
32768 24971315 26771484
65536 49806637 63260128
size memcpyC memcpyD
1 0 0
1 0 0
1 0 0
2 0 0
2 0 0
4 0 0
4 0 0
8 0 0
8 0 0
4 0 0
8 0 0
core.exception.AssertError@memcpyd.d(9): Assertion failure
----------------
??:? _d_assert [0xcaf056d5]
??:? [0xa015e7fe]
??:? [0xa0158cb0]
??:? void rt.dmain2._d_run_main(int, char**, extern (C) int
function(char[][])*).runAll() [0xcaf29daf]
??:? _d_run_main [0xcaf29c7b]
??:? __libc_start_main [0xca160eeb]
??:? [0xa0158b29]
