cmd/compile: optimize arm64's code with more shifted operations
This CL optimizes arm64's NEG/MVN/TST/CMN with a shifted operand.
1. The total size of pkg/android_arm64 decreases about 0.2KB, excluding
cmd/compile/ .
2. The go1 benchmark shows no regression, excluding noise.
name old time/op new time/op delta
BinaryTree17-4 16.4s ± 1% 16.4s ± 1% ~ (p=0.914 n=29+29)
Fannkuch11-4 8.72s ± 0% 8.72s ± 0% ~ (p=0.274 n=30+29)
FmtFprintfEmpty-4 174ns ± 0% 174ns ± 0% ~ (all equal)
FmtFprintfString-4 370ns ± 0% 370ns ± 0% ~ (all equal)
FmtFprintfInt-4 419ns ± 0% 419ns ± 0% ~ (all equal)
FmtFprintfIntInt-4 672ns ± 1% 675ns ± 2% ~ (p=0.217 n=28+30)
FmtFprintfPrefixedInt-4 806ns ± 0% 806ns ± 0% ~ (p=0.402 n=30+28)
FmtFprintfFloat-4 1.09µs ± 0% 1.09µs ± 0% +0.02% (p=0.011 n=22+27)
FmtManyArgs-4 2.67µs ± 0% 2.68µs ± 0% ~ (p=0.279 n=29+30)
GobDecode-4 33.1ms ± 1% 33.1ms ± 0% ~ (p=0.052 n=28+29)
GobEncode-4 29.6ms ± 0% 29.6ms ± 0% +0.08% (p=0.013 n=28+29)
Gzip-4 1.38s ± 2% 1.39s ± 2% ~ (p=0.071 n=29+29)
Gunzip-4 139ms ± 0% 139ms ± 0% ~ (p=0.265 n=29+29)
HTTPClientServer-4 789µs ± 4% 785µs ± 4% ~ (p=0.206 n=29+28)
JSONEncode-4 49.7ms ± 0% 49.6ms ± 0% -0.24% (p=0.000 n=30+30)
JSONDecode-4 266ms ± 1% 267ms ± 1% +0.34% (p=0.000 n=30+30)
Mandelbrot200-4 16.6ms ± 0% 16.6ms ± 0% ~ (p=0.835 n=28+30)
GoParse-4 15.9ms ± 0% 15.8ms ± 0% -0.29% (p=0.000 n=27+30)
RegexpMatchEasy0_32-4 380ns ± 0% 381ns ± 0% +0.18% (p=0.000 n=30+30)
RegexpMatchEasy0_1K-4 1.18µs ± 0% 1.19µs ± 0% +0.23% (p=0.000 n=30+30)
RegexpMatchEasy1_32-4 357ns ± 0% 358ns ± 0% +0.28% (p=0.000 n=29+29)
RegexpMatchEasy1_1K-4 2.04µs ± 0% 2.04µs ± 0% +0.06% (p=0.006 n=30+30)
RegexpMatchMedium_32-4 589ns ± 0% 590ns ± 0% +0.24% (p=0.000 n=28+30)
RegexpMatchMedium_1K-4 162µs ± 0% 162µs ± 0% -0.01% (p=0.027 n=26+29)
RegexpMatchHard_32-4 9.58µs ± 0% 9.58µs ± 0% ~ (p=0.935 n=30+30)
RegexpMatchHard_1K-4 287µs ± 0% 287µs ± 0% ~ (p=0.387 n=29+30)
Revcomp-4 2.50s ± 0% 2.50s ± 0% -0.10% (p=0.020 n=28+28)
Template-4 310ms ± 0% 310ms ± 1% ~ (p=0.406 n=30+30)
TimeParse-4 1.68µs ± 0% 1.68µs ± 0% +0.03% (p=0.014 n=30+17)
TimeFormat-4 1.65µs ± 0% 1.66µs ± 0% +0.32% (p=0.000 n=27+29)
[Geo mean] 247µs 247µs +0.05%
name old speed new speed delta
GobDecode-4 23.2MB/s ± 0% 23.2MB/s ± 0% -0.08% (p=0.032 n=27+29)
GobEncode-4 26.0MB/s ± 0% 25.9MB/s ± 0% -0.10% (p=0.011 n=29+29)
Gzip-4 14.1MB/s ± 2% 14.0MB/s ± 2% ~ (p=0.081 n=29+29)
Gunzip-4 139MB/s ± 0% 139MB/s ± 0% ~ (p=0.290 n=29+29)
JSONEncode-4 39.0MB/s ± 0% 39.1MB/s ± 0% +0.25% (p=0.000 n=29+30)
JSONDecode-4 7.30MB/s ± 1% 7.28MB/s ± 1% -0.33% (p=0.000 n=30+30)
GoParse-4 3.65MB/s ± 0% 3.66MB/s ± 0% +0.29% (p=0.000 n=27+30)
RegexpMatchEasy0_32-4 84.1MB/s ± 0% 84.0MB/s ± 0% -0.17% (p=0.000 n=30+28)
RegexpMatchEasy0_1K-4 864MB/s ± 0% 862MB/s ± 0% -0.24% (p=0.000 n=30+30)
RegexpMatchEasy1_32-4 89.5MB/s ± 0% 89.3MB/s ± 0% -0.18% (p=0.000 n=28+24)
RegexpMatchEasy1_1K-4 502MB/s ± 0% 502MB/s ± 0% -0.05% (p=0.008 n=30+29)
RegexpMatchMedium_32-4 1.70MB/s ± 0% 1.69MB/s ± 0% -0.59% (p=0.000 n=29+30)
RegexpMatchMedium_1K-4 6.31MB/s ± 0% 6.31MB/s ± 0% +0.05% (p=0.005 n=30+26)
RegexpMatchHard_32-4 3.34MB/s ± 0% 3.34MB/s ± 0% ~ (all equal)
RegexpMatchHard_1K-4 3.57MB/s ± 0% 3.57MB/s ± 0% ~ (all equal)
Revcomp-4 102MB/s ± 0% 102MB/s ± 0% +0.10% (p=0.022 n=28+28)
Template-4 6.26MB/s ± 0% 6.26MB/s ± 1% ~ (p=0.768 n=30+30)
[Geo mean] 24.2MB/s 24.1MB/s -0.08%
Change-Id: I494f9db7f8a568a00e9c74ae25086a58b2221683
Reviewed-on: https://go-review.googlesource.com/137976
Run-TryBot: Ben Shi <powerman1st@163.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Cherry Zhang <cherryyz@google.com>