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| author | Rui Ueyama <ruiu@google.com> | 2014-07-29 14:29:14 +1000 |
|---|---|---|
| committer | Nigel Tao <nigeltao@golang.org> | 2014-07-29 14:29:14 +1000 |
| commit | 0100afbdcc065ec20631d60cf7621d642f44b9d5 (patch) | |
| tree | dc3e55d2bab0f11506ded9ab4d86558b6e099ca8 /src/pkg/runtime/proc.c | |
| parent | d3fb02b5c5850f53721d923be6770246aca7f69e (diff) | |
| download | go-0100afbdcc065ec20631d60cf7621d642f44b9d5.tar.xz | |
image/png: use branch-free abs function
benchmark old ns/op new ns/op delta
BenchmarkPaeth 5.06 6.02 +18.97%
BenchmarkDecodeGray 1010551 956911 -5.31%
BenchmarkDecodeNRGBAGradient 3877813 3754160 -3.19%
BenchmarkDecodeNRGBAOpaque 3194058 3079094 -3.60%
BenchmarkDecodePaletted 699243 700211 +0.14%
BenchmarkDecodeRGB 2835733 2692120 -5.06%
BenchmarkDecodeInterlacing 3651805 3563124 -2.43%
BenchmarkEncodeGray 4399183 4404113 +0.11%
BenchmarkEncodeNRGBOpaque 13323627 13306485 -0.13%
BenchmarkEncodeNRGBA 15840092 15751188 -0.56%
BenchmarkEncodePaletted 4396622 4404373 +0.18%
BenchmarkEncodeRGBOpaque 13320475 13279189 -0.31%
BenchmarkEncodeRGBA 36898392 36781002 -0.32%
LGTM=nigeltao
R=nigeltao
CC=golang-codereviews
https://golang.org/cl/117290043
Diffstat (limited to 'src/pkg/runtime/proc.c')
0 files changed, 0 insertions, 0 deletions