| commit | 23f75541946884167364a5cc513699661dcfe8ff | [log] [tgz] |
|---|---|---|
| author | Carlos Eduardo Seo <cseo@linux.vnet.ibm.com> | Fri Sep 21 16:06:32 2018 -0300 |
| committer | Lynn Boger <laboger@linux.vnet.ibm.com> | Tue Sep 25 20:25:25 2018 +0000 |
| tree | bb9e6b04b97b9672e67e748d7d16b514519e686a | |
| parent | 5bba5053675f102a3a81242e8f7551791ae5a56e [diff] |
internal/bytealg: improve performance of IndexByte for ppc64x Use addi+lvx instruction fusion and remove register dependencies in the main loop to improve performance. benchmark old ns/op new ns/op delta BenchmarkIndexByte/10-192 9.86 9.75 -1.12% BenchmarkIndexByte/32-192 15.6 11.2 -28.21% BenchmarkIndexByte/4K-192 155 97.6 -37.03% BenchmarkIndexByte/4M-192 171790 129650 -24.53% BenchmarkIndexByte/64M-192 6530982 5018424 -23.16% benchmark old MB/s new MB/s speedup BenchmarkIndexByte/10-192 1013.72 1025.76 1.01x BenchmarkIndexByte/32-192 2049.47 2868.01 1.40x BenchmarkIndexByte/4K-192 26422.69 41975.67 1.59x BenchmarkIndexByte/4M-192 24415.17 32350.74 1.33x BenchmarkIndexByte/64M-192 10275.46 13372.50 1.30x Change-Id: Iedf17f01f374d58e85dcd6a972209bfcb7eb6063 Reviewed-on: https://go-review.googlesource.com/137415 Run-TryBot: Lynn Boger <laboger@linux.vnet.ibm.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Lynn Boger <laboger@linux.vnet.ibm.com>
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