diff options
| author | Chad Rosier <mrosier.qdt@qualcommdatacenter.com> | 2018-02-07 15:37:33 -0500 |
|---|---|---|
| committer | Brad Fitzpatrick <bradfitz@golang.org> | 2018-02-14 15:52:41 +0000 |
| commit | cdd961630cd26c5e42a537aaa52c669cf667d0be (patch) | |
| tree | e3a762d21d1002ae883d23f8feff098fcf96f072 /.github | |
| parent | eab06e65f7c4a1e3acafc220d0e9b8eca50f0311 (diff) | |
| download | go-git-cdd961630cd26c5e42a537aaa52c669cf667d0be.tar.gz | |
cmd/compile: generate tbz/tbnz when comparing against zero on arm64
The tbz/tbnz checks the sign bit to determine if the value is >= 0 or < 0.
go1 benchmark results:
name old speed new speed delta
JSONEncode 94.4MB/s ± 1% 95.7MB/s ± 0% +1.36% (p=0.000 n=10+9)
JSONDecode 19.7MB/s ± 1% 19.9MB/s ± 1% +1.08% (p=0.000 n=9+10)
Gzip 45.5MB/s ± 0% 46.0MB/s ± 0% +1.06% (p=0.000 n=10+10)
Revcomp 376MB/s ± 0% 379MB/s ± 0% +0.69% (p=0.000 n=10+10)
RegexpMatchHard_1K 12.6MB/s ± 0% 12.7MB/s ± 0% +0.57% (p=0.000 n=10+8)
RegexpMatchMedium_32 3.21MB/s ± 0% 3.22MB/s ± 0% +0.31% (p=0.000 n=9+10)
RegexpMatchEasy1_1K 1.27GB/s ± 0% 1.27GB/s ± 0% +0.23% (p=0.000 n=9+9)
RegexpMatchHard_32 11.4MB/s ± 0% 11.4MB/s ± 1% +0.19% (p=0.036 n=10+8)
RegexpMatchEasy0_1K 1.77GB/s ± 0% 1.77GB/s ± 0% +0.13% (p=0.000 n=9+10)
RegexpMatchMedium_1K 19.3MB/s ± 0% 19.3MB/s ± 0% +0.04% (p=0.008 n=10+8)
RegexpMatchEasy0_32 131MB/s ± 0% 131MB/s ± 0% ~ (p=0.211 n=10+10)
GobDecode 57.5MB/s ± 1% 57.6MB/s ± 2% ~ (p=0.469 n=10+10)
GobEncode 58.6MB/s ± 1% 58.5MB/s ± 2% ~ (p=0.781 n=10+10)
GoParse 9.40MB/s ± 0% 9.39MB/s ± 0% -0.19% (p=0.005 n=10+9)
RegexpMatchEasy1_32 133MB/s ± 0% 133MB/s ± 0% -0.48% (p=0.000 n=10+10)
Template 20.9MB/s ± 0% 20.6MB/s ± 0% -1.54% (p=0.000 n=8+10)
Change-Id: I411efe44db35c3962445618d5a47c12e31b3925b
Reviewed-on: https://go-review.googlesource.com/92715
Run-TryBot: Brad Fitzpatrick <bradfitz@golang.org>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
Reviewed-by: Cherry Zhang <cherryyz@google.com>
Diffstat (limited to '.github')
0 files changed, 0 insertions, 0 deletions