cmd/compile: introduce more read-modify-write operations for amd64
Add suport of read-modify-write for AND/SUB/AND/OR/XOR on amd64.
1. The total size of pkg/linux_amd64 decreases about 4KB, excluding
cmd/compile.
2. The go1 benchmark shows a little improvement, excluding noise.
name old time/op new time/op delta
BinaryTree17-4 2.63s ± 3% 2.65s ± 4% +1.01% (p=0.037 n=35+35)
Fannkuch11-4 2.33s ± 2% 2.39s ± 2% +2.49% (p=0.000 n=35+35)
FmtFprintfEmpty-4 45.4ns ± 5% 40.8ns ± 6% -10.09% (p=0.000 n=35+35)
FmtFprintfString-4 73.3ns ± 4% 70.9ns ± 3% -3.23% (p=0.000 n=30+35)
FmtFprintfInt-4 79.9ns ± 4% 79.5ns ± 3% ~ (p=0.736 n=34+35)
FmtFprintfIntInt-4 126ns ± 4% 125ns ± 4% ~ (p=0.083 n=35+35)
FmtFprintfPrefixedInt-4 152ns ± 6% 152ns ± 3% ~ (p=0.855 n=34+35)
FmtFprintfFloat-4 215ns ± 4% 213ns ± 4% ~ (p=0.066 n=35+35)
FmtManyArgs-4 522ns ± 3% 506ns ± 3% -3.15% (p=0.000 n=35+35)
GobDecode-4 6.45ms ± 8% 6.51ms ± 7% +0.96% (p=0.026 n=35+35)
GobEncode-4 6.10ms ± 6% 6.02ms ± 8% ~ (p=0.160 n=35+35)
Gzip-4 228ms ± 3% 221ms ± 3% -2.92% (p=0.000 n=35+35)
Gunzip-4 37.5ms ± 4% 37.2ms ± 3% -0.78% (p=0.036 n=35+35)
HTTPClientServer-4 58.7µs ± 2% 59.2µs ± 1% +0.80% (p=0.000 n=33+33)
JSONEncode-4 12.0ms ± 3% 12.2ms ± 3% +1.84% (p=0.008 n=35+35)
JSONDecode-4 57.0ms ± 4% 56.6ms ± 3% ~ (p=0.320 n=35+35)
Mandelbrot200-4 3.82ms ± 3% 3.79ms ± 3% ~ (p=0.074 n=35+35)
GoParse-4 3.21ms ± 5% 3.24ms ± 4% ~ (p=0.119 n=35+35)
RegexpMatchEasy0_32-4 76.3ns ± 4% 75.4ns ± 4% -1.14% (p=0.014 n=34+33)
RegexpMatchEasy0_1K-4 251ns ± 4% 254ns ± 3% +1.28% (p=0.016 n=35+35)
RegexpMatchEasy1_32-4 69.6ns ± 3% 70.1ns ± 3% +0.82% (p=0.005 n=35+35)
RegexpMatchEasy1_1K-4 367ns ± 4% 376ns ± 4% +2.47% (p=0.000 n=35+35)
RegexpMatchMedium_32-4 108ns ± 5% 104ns ± 4% -3.18% (p=0.000 n=35+35)
RegexpMatchMedium_1K-4 33.8µs ± 3% 32.7µs ± 3% -3.27% (p=0.000 n=35+35)
RegexpMatchHard_32-4 1.55µs ± 3% 1.52µs ± 3% -1.64% (p=0.000 n=35+35)
RegexpMatchHard_1K-4 46.6µs ± 3% 46.6µs ± 4% ~ (p=0.149 n=35+35)
Revcomp-4 416ms ± 7% 412ms ± 6% -0.95% (p=0.033 n=33+35)
Template-4 64.3ms ± 3% 62.4ms ± 7% -2.94% (p=0.000 n=35+35)
TimeParse-4 320ns ± 2% 322ns ± 3% ~ (p=0.589 n=35+35)
TimeFormat-4 300ns ± 3% 300ns ± 3% ~ (p=0.597 n=35+35)
[Geo mean] 47.4µs 47.0µs -0.86%
name old speed new speed delta
GobDecode-4 119MB/s ± 7% 118MB/s ± 7% -0.96% (p=0.027 n=35+35)
GobEncode-4 126MB/s ± 7% 127MB/s ± 6% ~ (p=0.157 n=34+34)
Gzip-4 85.3MB/s ± 3% 87.9MB/s ± 3% +3.02% (p=0.000 n=35+35)
Gunzip-4 518MB/s ± 4% 522MB/s ± 3% +0.79% (p=0.037 n=35+35)
JSONEncode-4 162MB/s ± 3% 159MB/s ± 3% -1.81% (p=0.009 n=35+35)
JSONDecode-4 34.1MB/s ± 4% 34.3MB/s ± 3% ~ (p=0.318 n=35+35)
GoParse-4 18.0MB/s ± 5% 17.9MB/s ± 4% ~ (p=0.117 n=35+35)
RegexpMatchEasy0_32-4 419MB/s ± 3% 425MB/s ± 4% +1.46% (p=0.003 n=32+33)
RegexpMatchEasy0_1K-4 4.07GB/s ± 4% 4.02GB/s ± 3% -1.28% (p=0.014 n=35+35)
RegexpMatchEasy1_32-4 460MB/s ± 3% 456MB/s ± 4% -0.82% (p=0.004 n=35+35)
RegexpMatchEasy1_1K-4 2.79GB/s ± 4% 2.72GB/s ± 4% -2.39% (p=0.000 n=35+35)
RegexpMatchMedium_32-4 9.23MB/s ± 4% 9.53MB/s ± 4% +3.16% (p=0.000 n=35+35)
RegexpMatchMedium_1K-4 30.3MB/s ± 3% 31.3MB/s ± 3% +3.38% (p=0.000 n=35+35)
RegexpMatchHard_32-4 20.7MB/s ± 3% 21.0MB/s ± 3% +1.67% (p=0.000 n=35+35)
RegexpMatchHard_1K-4 22.0MB/s ± 3% 21.9MB/s ± 4% ~ (p=0.277 n=35+33)
Revcomp-4 612MB/s ± 7% 618MB/s ± 6% +0.96% (p=0.034 n=33+35)
Template-4 30.2MB/s ± 3% 31.1MB/s ± 6% +3.05% (p=0.000 n=35+35)
[Geo mean] 123MB/s 124MB/s +0.64%
Change-Id: Ia025da272e07d0069413824bfff3471b106d6280
Reviewed-on: https://go-review.googlesource.com/121535
Run-TryBot: Ben Shi <powerman1st@163.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Ilya Tocar <ilya.tocar@intel.com>
Reviewed-by: Keith Randall <khr@golang.org>