diff options
| author | Emilio G. Cota <cota@braap.org> | 2018-03-17 00:45:01 -0400 |
|---|---|---|
| committer | Alex Bennée <alex.bennee@linaro.org> | 2018-12-17 08:25:25 +0000 |
| commit | 4a6295613f533a6841de5968c50e1ca36748807e (patch) | |
| tree | f2ba39d2a76e5a48dc3eeca9387b0642e753b3c6 /block/dmg-lzfse.c | |
| parent | 2dfabc86e656e835c67954c60e143ecd33e15817 (diff) | |
| download | qemu-4a6295613f533a6841de5968c50e1ca36748807e.zip qemu-4a6295613f533a6841de5968c50e1ca36748807e.tar.gz qemu-4a6295613f533a6841de5968c50e1ca36748807e.tar.bz2 | |
hardfloat: implement float32/64 division
Performance results for fp-bench:
1. Intel(R) Core(TM) i7-6700K CPU @ 4.00GHz
- before:
div-single: 34.84 MFlops
div-double: 34.04 MFlops
- after:
div-single: 275.23 MFlops
div-double: 216.38 MFlops
2. ARM Aarch64 A57 @ 2.4GHz
- before:
div-single: 9.33 MFlops
div-double: 9.30 MFlops
- after:
div-single: 51.55 MFlops
div-double: 15.09 MFlops
3. IBM POWER8E @ 2.1 GHz
- before:
div-single: 25.65 MFlops
div-double: 24.91 MFlops
- after:
div-single: 96.83 MFlops
div-double: 31.01 MFlops
Here setting 2FP64_USE_FP to 1 pays off for x86_64:
[1] 215.97 vs [0] 62.15 MFlops
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Signed-off-by: Emilio G. Cota <cota@braap.org>
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Diffstat (limited to 'block/dmg-lzfse.c')
0 files changed, 0 insertions, 0 deletions