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| author | Lynn Boger <laboger@linux.vnet.ibm.com> | 2017-03-13 16:25:15 -0400 |
|---|---|---|
| committer | Lynn Boger <laboger@linux.vnet.ibm.com> | 2017-03-17 12:28:57 +0000 |
| commit | b6cd22c277f49df493e3033430c32e56ecb949e3 (patch) | |
| tree | e4f36a42a5b38a5b75f54aa0ba2ae7b0db3bc68a /src/encoding | |
| parent | 16663a85ba0b2814c47f54ddfdcb45782e10dc42 (diff) | |
| download | go-b6cd22c277f49df493e3033430c32e56ecb949e3.tar.xz | |
hash/crc32: improve performance for ppc64le
This change improves the performance of crc32 for ppc64le by using
vpmsum and other vector instructions in the algorithm.
The testcase was updated to test more sizes.
Fixes #19570
BenchmarkCRC32/poly=IEEE/size=15/align=0-8 90.5 81.8 -9.61%
BenchmarkCRC32/poly=IEEE/size=15/align=1-8 89.7 81.7 -8.92%
BenchmarkCRC32/poly=IEEE/size=40/align=0-8 93.2 61.1 -34.44%
BenchmarkCRC32/poly=IEEE/size=40/align=1-8 92.8 60.9 -34.38%
BenchmarkCRC32/poly=IEEE/size=512/align=0-8 501 55.8 -88.86%
BenchmarkCRC32/poly=IEEE/size=512/align=1-8 502 132 -73.71%
BenchmarkCRC32/poly=IEEE/size=1kB/align=0-8 947 69.9 -92.62%
BenchmarkCRC32/poly=IEEE/size=1kB/align=1-8 946 144 -84.78%
BenchmarkCRC32/poly=IEEE/size=4kB/align=0-8 3602 186 -94.84%
BenchmarkCRC32/poly=IEEE/size=4kB/align=1-8 3603 263 -92.70%
BenchmarkCRC32/poly=IEEE/size=32kB/align=0-8 28404 1338 -95.29%
BenchmarkCRC32/poly=IEEE/size=32kB/align=1-8 28856 1405 -95.13%
BenchmarkCRC32/poly=Castagnoli/size=15/align=0-8 89.7 81.8 -8.81%
BenchmarkCRC32/poly=Castagnoli/size=15/align=1-8 89.8 81.9 -8.80%
BenchmarkCRC32/poly=Castagnoli/size=40/align=0-8 93.8 61.4 -34.54%
BenchmarkCRC32/poly=Castagnoli/size=40/align=1-8 94.3 61.3 -34.99%
BenchmarkCRC32/poly=Castagnoli/size=512/align=0-8 503 56.4 -88.79%
BenchmarkCRC32/poly=Castagnoli/size=512/align=1-8 502 132 -73.71%
BenchmarkCRC32/poly=Castagnoli/size=1kB/align=0-8 941 70.2 -92.54%
BenchmarkCRC32/poly=Castagnoli/size=1kB/align=1-8 943 145 -84.62%
BenchmarkCRC32/poly=Castagnoli/size=4kB/align=0-8 3588 186 -94.82%
BenchmarkCRC32/poly=Castagnoli/size=4kB/align=1-8 3595 264 -92.66%
BenchmarkCRC32/poly=Castagnoli/size=32kB/align=0-8 28266 1323 -95.32%
BenchmarkCRC32/poly=Castagnoli/size=32kB/align=1-8 28344 1404 -95.05%
Change-Id: Ic4d8274c66e0e87bfba5f609f508a3877aee6bb5
Reviewed-on: https://go-review.googlesource.com/38184
Reviewed-by: David Chase <drchase@google.com>
Diffstat (limited to 'src/encoding')
0 files changed, 0 insertions, 0 deletions