snappy/cmake
costan 632cd0f128 Use 64-bit optimized code path for ARM64.
This is inspired by https://github.com/google/snappy/pull/22.

Benchmark results with the change, Pixel C with Android N2G48B

Benchmark            Time(ns)    CPU(ns) Iterations
---------------------------------------------------
BM_UFlat/0             119544     119253       1501 818.9MB/s  html
BM_UFlat/1            1223950    1208588        163 554.0MB/s  urls
BM_UFlat/2              16081      15962      11527 7.2GB/s  jpg
BM_UFlat/3                356        352     416666 540.6MB/s  jpg_200
BM_UFlat/4              25010      24860       7683 3.8GB/s  pdf
BM_UFlat/5             484832     481572        407 811.1MB/s  html4
BM_UFlat/6             408410     408713        482 354.9MB/s  txt1
BM_UFlat/7             361714     361663        553 330.1MB/s  txt2
BM_UFlat/8            1090582    1087912        182 374.1MB/s  txt3
BM_UFlat/9            1503127    1503759        133 305.6MB/s  txt4
BM_UFlat/10            114183     114285       1715 989.6MB/s  pb
BM_UFlat/11            406714     407331        491 431.5MB/s  gaviota
BM_UIOVec/0            370397     369888        538 264.0MB/s  html
BM_UIOVec/1           3207510    3190000        100 209.9MB/s  urls
BM_UIOVec/2             16589      16573      11223 6.9GB/s  jpg
BM_UIOVec/3              1052       1052     165289 181.2MB/s  jpg_200
BM_UIOVec/4             49151      49184       3985 1.9GB/s  pdf
BM_UValidate/0          68115      68095       2893 1.4GB/s  html
BM_UValidate/1         792652     792000        250 845.4MB/s  urls
BM_UValidate/2            334        334     487804 343.1GB/s  jpg
BM_UValidate/3            235        235     666666 809.9MB/s  jpg_200
BM_UValidate/4           6126       6130      32626 15.6GB/s  pdf
BM_ZFlat/0             292697     290560        678 336.1MB/s  html (22.31 %)
BM_ZFlat/1            4062080    4050000        100 165.3MB/s  urls (47.78 %)
BM_ZFlat/2              29225      29274       6422 3.9GB/s  jpg (99.95 %)
BM_ZFlat/3               1099       1098     163934 173.7MB/s  jpg_200 (73.00 %)
BM_ZFlat/4              44117      44233       4205 2.2GB/s  pdf (83.30 %)
BM_ZFlat/5            1158058    1157894        171 337.4MB/s  html4 (22.52 %)
BM_ZFlat/6            1102983    1093922        181 132.6MB/s  txt1 (57.88 %)
BM_ZFlat/7             974142     975490        204 122.4MB/s  txt2 (61.91 %)
BM_ZFlat/8            2984670    2990000        100 136.1MB/s  txt3 (54.99 %)
BM_ZFlat/9            4100130    4090000        100 112.4MB/s  txt4 (66.26 %)
BM_ZFlat/10            276236     275139        716 411.0MB/s  pb (19.68 %)
BM_ZFlat/11            760091     759541        262 231.4MB/s  gaviota (37.72 %)

Baseline benchmark results, Pixel C with Android N2G48B

Benchmark            Time(ns)    CPU(ns) Iterations
---------------------------------------------------
BM_UFlat/0             148957     147565       1335 661.8MB/s  html
BM_UFlat/1            1527257    1500000        132 446.4MB/s  urls
BM_UFlat/2              19589      19397       8764 5.9GB/s  jpg
BM_UFlat/3                425        418     408163 455.3MB/s  jpg_200
BM_UFlat/4              30096      29552       6497 3.2GB/s  pdf
BM_UFlat/5             595933     594594        333 657.0MB/s  html4
BM_UFlat/6             516315     514360        383 282.0MB/s  txt1
BM_UFlat/7             454653     453514        441 263.2MB/s  txt2
BM_UFlat/8            1382687    1361111        144 299.0MB/s  txt3
BM_UFlat/9            1967590    1904761        105 241.3MB/s  txt4
BM_UFlat/10            148271     144560       1342 782.3MB/s  pb
BM_UFlat/11            523997     510471        382 344.4MB/s  gaviota
BM_UIOVec/0            478443     465227        417 209.9MB/s  html
BM_UIOVec/1           4172860    4060000        100 164.9MB/s  urls
BM_UIOVec/2             21470      20975       7342 5.5GB/s  jpg
BM_UIOVec/3              1357       1330      75187 143.4MB/s  jpg_200
BM_UIOVec/4             63143      61365       3031 1.6GB/s  pdf
BM_UValidate/0          86910      85125       2279 1.1GB/s  html
BM_UValidate/1        1022256    1000000        195 669.6MB/s  urls
BM_UValidate/2            420        417     400000 274.6GB/s  jpg
BM_UValidate/3            311        302     571428 630.0MB/s  jpg_200
BM_UValidate/4           7778       7584      25445 12.6GB/s  pdf
BM_ZFlat/0             469209     457547        424 213.4MB/s  html (22.31 %)
BM_ZFlat/1            5633510    5460000        100 122.6MB/s  urls (47.78 %)
BM_ZFlat/2              37896      36693       4524 3.1GB/s  jpg (99.95 %)
BM_ZFlat/3               1485       1441     123456 132.3MB/s  jpg_200 (73.00 %)
BM_ZFlat/4              74870      72775       2652 1.3GB/s  pdf (83.30 %)
BM_ZFlat/5            1857321    1785714        112 218.8MB/s  html4 (22.52 %)
BM_ZFlat/6            1538723    1492307        130 97.2MB/s  txt1 (57.88 %)
BM_ZFlat/7            1338236    1310810        148 91.1MB/s  txt2 (61.91 %)
BM_ZFlat/8            4050820    4040000        100 100.7MB/s  txt3 (54.99 %)
BM_ZFlat/9            5234940    5230000        100 87.9MB/s  txt4 (66.26 %)
BM_ZFlat/10            400309     400000        495 282.7MB/s  pb (19.68 %)
BM_ZFlat/11           1063042    1058510        188 166.1MB/s  gaviota (37.72 %)
2017-08-16 19:18:22 -07:00
..
config.h.in Use 64-bit optimized code path for ARM64. 2017-08-16 19:18:22 -07:00
SnappyConfig.cmake Redo CMake configuration. 2017-07-28 10:14:21 -07:00