tree b793bdacb3964793510a637b20352408c8d06c05
parent 6729715c485b09bb56033451281bf6e19599203f
author Nigel Tao <nigeltao@golang.org> 1549161583 +1100
committer Nigel Tao <nigeltao@golang.org> 1549161583 +1100

Flatten the lzw.decoder.suffixes array

This commit will soon be followed by a rollback, but it is committed
anyway so that we can refer to these numbers in the git log.

name                                     old speed      new speed      delta

wuffs_lzw_decode_20k/clang5               265MB/s ± 0%   255MB/s ± 0%  -3.85%  (p=0.008 n=5+5)
wuffs_lzw_decode_100k/clang5              452MB/s ± 1%   418MB/s ± 1%  -7.62%  (p=0.008 n=5+5)

wuffs_lzw_decode_20k/gcc7                 263MB/s ± 1%   255MB/s ± 1%  -3.21%  (p=0.008 n=5+5)
wuffs_lzw_decode_100k/gcc7                482MB/s ± 2%   444MB/s ± 1%  -7.85%  (p=0.008 n=5+5)

wuffs_gif_decode_1k_bw/clang5             241MB/s ± 1%   239MB/s ± 2%    ~     (p=0.310 n=5+5)
wuffs_gif_decode_1k_color/clang5          141MB/s ± 1%   135MB/s ± 0%  -4.30%  (p=0.008 n=5+5)
wuffs_gif_decode_10k_bgra/clang5          721MB/s ± 0%   692MB/s ± 1%  -4.00%  (p=0.008 n=5+5)
wuffs_gif_decode_10k_indexed/clang5       194MB/s ± 1%   186MB/s ± 0%  -4.03%  (p=0.008 n=5+5)
wuffs_gif_decode_20k/clang5               246MB/s ± 1%   237MB/s ± 1%  -3.60%  (p=0.008 n=5+5)
wuffs_gif_decode_100k_artificial/clang5   551MB/s ± 0%   536MB/s ± 0%  -2.73%  (p=0.008 n=5+5)
wuffs_gif_decode_100k_realistic/clang5    227MB/s ± 0%   219MB/s ± 0%  -3.74%  (p=0.008 n=5+5)
wuffs_gif_decode_1000k/clang5             231MB/s ± 0%   222MB/s ± 0%  -3.88%  (p=0.008 n=5+5)
wuffs_gif_decode_anim_screencap/clang5   1.10GB/s ± 0%  1.07GB/s ± 0%  -2.35%  (p=0.008 n=5+5)

wuffs_gif_decode_1k_bw/gcc7               265MB/s ± 1%   262MB/s ± 0%  -1.49%  (p=0.008 n=5+5)
wuffs_gif_decode_1k_color/gcc7            145MB/s ± 1%   142MB/s ± 1%  -2.52%  (p=0.008 n=5+5)
wuffs_gif_decode_10k_bgra/gcc7            622MB/s ± 1%   596MB/s ± 1%  -4.18%  (p=0.008 n=5+5)
wuffs_gif_decode_10k_indexed/gcc7         194MB/s ± 0%   185MB/s ± 0%  -4.81%  (p=0.008 n=5+5)
wuffs_gif_decode_20k/gcc7                 234MB/s ± 1%   230MB/s ± 0%  -1.80%  (p=0.008 n=5+5)
wuffs_gif_decode_100k_artificial/gcc7     506MB/s ± 1%   490MB/s ± 1%  -3.14%  (p=0.008 n=5+5)
wuffs_gif_decode_100k_realistic/gcc7      210MB/s ± 1%   203MB/s ± 1%  -2.89%  (p=0.008 n=5+5)
wuffs_gif_decode_1000k/gcc7               213MB/s ± 0%   207MB/s ± 0%  -2.66%  (p=0.008 n=5+5)
wuffs_gif_decode_anim_screencap/gcc7     1.06GB/s ± 0%  1.04GB/s ± 0%  -2.38%  (p=0.008 n=5+5)