cmd/compile: optimize AMD64 with DIVSSload and DIVSDload
DIVSSload & DIVSDload directly operate on a memory operand. And
binary size can be reduced by them, while the performance is
not affected.
The total size of pkg/linux_amd64 (excluding cmd/compile) decreases
about 6KB.
There is little regression in the go1 benchmark test (excluding noise).
name old time/op new time/op delta
BinaryTree17-4 2.63s ± 4% 2.62s ± 4% ~ (p=0.809 n=30+30)
Fannkuch11-4 2.40s ± 2% 2.40s ± 2% ~ (p=0.109 n=30+30)
FmtFprintfEmpty-4 43.1ns ± 4% 43.2ns ± 9% ~ (p=0.168 n=30+30)
FmtFprintfString-4 73.6ns ± 4% 74.1ns ± 4% ~ (p=0.069 n=30+30)
FmtFprintfInt-4 81.0ns ± 3% 81.4ns ± 5% ~ (p=0.350 n=30+30)
FmtFprintfIntInt-4 127ns ± 4% 129ns ± 4% +0.99% (p=0.021 n=30+30)
FmtFprintfPrefixedInt-4 156ns ± 4% 155ns ± 4% ~ (p=0.415 n=30+30)
FmtFprintfFloat-4 219ns ± 4% 218ns ± 4% ~ (p=0.071 n=30+30)
FmtManyArgs-4 522ns ± 3% 518ns ± 3% -0.68% (p=0.034 n=30+30)
GobDecode-4 6.49ms ± 6% 6.52ms ± 6% ~ (p=0.832 n=30+30)
GobEncode-4 6.10ms ± 9% 6.14ms ± 7% ~ (p=0.485 n=30+30)
Gzip-4 227ms ± 1% 224ms ± 4% ~ (p=0.484 n=24+30)
Gunzip-4 37.2ms ± 3% 36.8ms ± 4% ~ (p=0.889 n=30+30)
HTTPClientServer-4 58.9µs ± 1% 58.7µs ± 2% -0.42% (p=0.003 n=28+28)
JSONEncode-4 12.0ms ± 3% 12.0ms ± 4% ~ (p=0.523 n=30+30)
JSONDecode-4 54.6ms ± 4% 54.5ms ± 4% ~ (p=0.708 n=30+30)
Mandelbrot200-4 3.78ms ± 4% 3.81ms ± 3% +0.99% (p=0.016 n=30+30)
GoParse-4 3.20ms ± 4% 3.20ms ± 5% ~ (p=0.994 n=30+30)
RegexpMatchEasy0_32-4 77.0ns ± 4% 75.9ns ± 3% -1.39% (p=0.006 n=29+30)
RegexpMatchEasy0_1K-4 255ns ± 4% 253ns ± 4% ~ (p=0.091 n=30+30)
RegexpMatchEasy1_32-4 69.7ns ± 3% 70.3ns ± 4% ~ (p=0.120 n=30+30)
RegexpMatchEasy1_1K-4 373ns ± 2% 378ns ± 3% +1.43% (p=0.000 n=21+26)
RegexpMatchMedium_32-4 107ns ± 2% 108ns ± 4% +1.50% (p=0.012 n=22+30)
RegexpMatchMedium_1K-4 34.0µs ± 1% 34.3µs ± 3% +1.08% (p=0.008 n=24+30)
RegexpMatchHard_32-4 1.53µs ± 3% 1.54µs ± 3% ~ (p=0.234 n=30+30)
RegexpMatchHard_1K-4 46.7µs ± 4% 47.0µs ± 4% ~ (p=0.420 n=30+30)
Revcomp-4 411ms ± 7% 415ms ± 6% ~ (p=0.059 n=30+30)
Template-4 65.5ms ± 5% 66.9ms ± 4% +2.21% (p=0.001 n=30+30)
TimeParse-4 317ns ± 3% 311ns ± 3% -1.97% (p=0.000 n=30+30)
TimeFormat-4 293ns ± 3% 294ns ± 3% ~ (p=0.243 n=30+30)
[Geo mean] 47.4µs 47.5µs +0.17%
name old speed new speed delta
GobDecode-4 118MB/s ± 5% 118MB/s ± 6% ~ (p=0.832 n=30+30)
GobEncode-4 125MB/s ± 7% 125MB/s ± 7% ~ (p=0.625 n=29+30)
Gzip-4 85.3MB/s ± 1% 86.6MB/s ± 4% ~ (p=0.486 n=24+30)
Gunzip-4 522MB/s ± 3% 527MB/s ± 4% ~ (p=0.889 n=30+30)
JSONEncode-4 162MB/s ± 3% 162MB/s ± 4% ~ (p=0.520 n=30+30)
JSONDecode-4 35.5MB/s ± 4% 35.6MB/s ± 4% ~ (p=0.701 n=30+30)
GoParse-4 18.1MB/s ± 4% 18.1MB/s ± 4% ~ (p=0.891 n=29+30)
RegexpMatchEasy0_32-4 416MB/s ± 4% 422MB/s ± 3% +1.43% (p=0.005 n=29+30)
RegexpMatchEasy0_1K-4 4.01GB/s ± 4% 4.04GB/s ± 4% ~ (p=0.091 n=30+30)
RegexpMatchEasy1_32-4 460MB/s ± 3% 456MB/s ± 5% ~ (p=0.123 n=30+30)
RegexpMatchEasy1_1K-4 2.74GB/s ± 2% 2.70GB/s ± 3% -1.33% (p=0.000 n=22+26)
RegexpMatchMedium_32-4 9.39MB/s ± 3% 9.19MB/s ± 4% -2.06% (p=0.001 n=28+30)
RegexpMatchMedium_1K-4 30.1MB/s ± 1% 29.8MB/s ± 3% -1.04% (p=0.008 n=24+30)
RegexpMatchHard_32-4 20.9MB/s ± 3% 20.8MB/s ± 3% ~ (p=0.234 n=30+30)
RegexpMatchHard_1K-4 21.9MB/s ± 4% 21.8MB/s ± 4% ~ (p=0.420 n=30+30)
Revcomp-4 619MB/s ± 7% 612MB/s ± 7% ~ (p=0.059 n=30+30)
Template-4 29.6MB/s ± 4% 29.0MB/s ± 4% -2.16% (p=0.002 n=30+30)
[Geo mean] 123MB/s 123MB/s -0.33%
Change-Id: Ia59e077feae4f2824df79059daea4d0f678e3e4c
Reviewed-on: https://go-review.googlesource.com/120275
Run-TryBot: Ben Shi <powerman1st@163.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Ilya Tocar <ilya.tocar@intel.com>