diff options
| author | Carlos Eduardo Seo <cseo@linux.vnet.ibm.com> | 2017-08-07 15:44:38 -0300 |
|---|---|---|
| committer | Lynn Boger <laboger@linux.vnet.ibm.com> | 2017-11-06 21:56:18 +0000 |
| commit | be943df58860e7dec008ebb8d68428d54e311b94 (patch) | |
| tree | 69a3bce9cb554f691b8bfa73d8c079444f3c877f /src/cmd/compile | |
| parent | 4fcc835971ad63cf913ebe074ef6191e35a44ab9 (diff) | |
| download | go-be943df58860e7dec008ebb8d68428d54e311b94.tar.xz | |
runtime: improve IndexByte for ppc64x
This change adds a better implementation of IndexByte in asm that uses the
vector registers/instructions on ppc64x.
benchmark old ns/op new ns/op delta
BenchmarkIndexByte/10-8 9.70 9.37 -3.40%
BenchmarkIndexByte/32-8 10.9 10.9 +0.00%
BenchmarkIndexByte/4K-8 254 92.8 -63.46%
BenchmarkIndexByte/4M-8 249246 118435 -52.48%
BenchmarkIndexByte/64M-8 10737987 7383096 -31.24%
benchmark old MB/s new MB/s speedup
BenchmarkIndexByte/10-8 1030.63 1067.24 1.04x
BenchmarkIndexByte/32-8 2922.69 2928.53 1.00x
BenchmarkIndexByte/4K-8 16065.95 44156.45 2.75x
BenchmarkIndexByte/4M-8 16827.96 35414.21 2.10x
BenchmarkIndexByte/64M-8 6249.67 9089.53 1.45x
Change-Id: I81dbdd620f7bb4e395ce4d1f2a14e8e91e39f9a1
Reviewed-on: https://go-review.googlesource.com/71710
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>
Diffstat (limited to 'src/cmd/compile')
0 files changed, 0 insertions, 0 deletions