20cf5c4962
Some integer/float binary operations of 386 can take a direct memory operand, which is more efficient than loading to a register. These CL does this optimization by copying the similar solution of amd64. And the go1 benchmark shows some inprovements, especially the test case Template. (excluding noise) name old time/op new time/op delta BinaryTree17-4 3.42s ± 2% 3.40s ± 2% ~ (p=0.069 n=38+39) Fannkuch11-4 3.48s ± 1% 3.53s ± 1% +1.59% (p=0.000 n=40+40) FmtFprintfEmpty-4 46.7ns ± 4% 46.3ns ± 3% -1.03% (p=0.001 n=40+40) FmtFprintfString-4 80.1ns ± 3% 80.6ns ± 3% +0.56% (p=0.029 n=40+40) FmtFprintfInt-4 92.4ns ± 2% 92.3ns ± 3% ~ (p=0.847 n=40+40) FmtFprintfIntInt-4 147ns ± 3% 144ns ± 3% -1.87% (p=0.000 n=40+40) FmtFprintfPrefixedInt-4 182ns ± 2% 184ns ± 3% +0.99% (p=0.002 n=40+40) FmtFprintfFloat-4 387ns ± 3% 384ns ± 3% ~ (p=0.069 n=40+40) FmtManyArgs-4 619ns ± 3% 616ns ± 3% ~ (p=0.320 n=40+40) GobDecode-4 7.28ms ± 6% 7.27ms ± 5% ~ (p=0.897 n=40+40) GobEncode-4 7.33ms ± 6% 7.21ms ± 6% -1.56% (p=0.022 n=38+40) Gzip-4 357ms ± 4% 357ms ± 4% ~ (p=0.071 n=40+40) Gunzip-4 45.3ms ± 3% 45.4ms ± 3% ~ (p=0.452 n=40+40) HTTPClientServer-4 63.0µs ± 2% 62.9µs ± 3% ~ (p=0.760 n=38+39) JSONEncode-4 22.0ms ± 4% 21.7ms ± 4% -1.49% (p=0.000 n=40+40) JSONDecode-4 67.7ms ± 4% 68.3ms ± 3% +0.86% (p=0.039 n=40+40) Mandelbrot200-4 5.16ms ± 3% 5.17ms ± 3% ~ (p=0.418 n=40+40) GoParse-4 3.30ms ± 2% 3.32ms ± 3% +0.55% (p=0.017 n=40+40) RegexpMatchEasy0_32-4 104ns ± 3% 104ns ± 4% ~ (p=0.992 n=40+40) RegexpMatchEasy0_1K-4 852ns ± 3% 851ns ± 2% ~ (p=0.344 n=40+40) RegexpMatchEasy1_32-4 113ns ± 4% 113ns ± 5% ~ (p=0.937 n=40+40) RegexpMatchEasy1_1K-4 1.03µs ± 5% 1.04µs ± 4% ~ (p=0.430 n=40+40) RegexpMatchMedium_32-4 132ns ± 4% 131ns ± 3% -1.06% (p=0.027 n=40+40) RegexpMatchMedium_1K-4 43.0µs ± 3% 43.2µs ± 3% ~ (p=0.122 n=40+40) RegexpMatchHard_32-4 2.21µs ± 4% 2.20µs ± 4% ~ (p=0.146 n=40+40) RegexpMatchHard_1K-4 67.1µs ± 4% 67.2µs ± 3% ~ (p=0.859 n=40+40) Revcomp-4 1.85s ± 2% 1.85s ± 3% ~ (p=0.184 n=40+40) Template-4 70.1ms ± 4% 67.5ms ± 3% -3.65% (p=0.000 n=40+40) TimeParse-4 457ns ±16% 439ns ± 4% ~ (p=0.683 n=40+34) TimeFormat-4 413ns ± 3% 414ns ± 3% ~ (p=0.850 n=40+40) [Geo mean] 67.5µs 67.3µs -0.38% name old speed new speed delta GobDecode-4 105MB/s ± 6% 106MB/s ± 5% ~ (p=0.893 n=40+40) GobEncode-4 105MB/s ± 6% 107MB/s ± 7% +1.60% (p=0.023 n=38+40) Gzip-4 54.4MB/s ± 4% 54.5MB/s ± 4% ~ (p=0.073 n=40+40) Gunzip-4 429MB/s ± 3% 428MB/s ± 3% ~ (p=0.453 n=40+40) JSONEncode-4 88.3MB/s ± 5% 89.6MB/s ± 4% +1.51% (p=0.000 n=40+40) JSONDecode-4 28.7MB/s ± 4% 28.4MB/s ± 3% -0.87% (p=0.039 n=40+40) GoParse-4 17.6MB/s ± 3% 17.5MB/s ± 3% -0.55% (p=0.020 n=40+40) RegexpMatchEasy0_32-4 308MB/s ± 4% 308MB/s ± 5% ~ (p=0.988 n=40+40) RegexpMatchEasy0_1K-4 1.20GB/s ± 3% 1.20GB/s ± 2% ~ (p=0.329 n=40+40) RegexpMatchEasy1_32-4 283MB/s ± 4% 283MB/s ± 4% ~ (p=0.507 n=40+40) RegexpMatchEasy1_1K-4 991MB/s ± 5% 987MB/s ± 4% ~ (p=0.446 n=40+40) RegexpMatchMedium_32-4 7.54MB/s ± 4% 7.63MB/s ± 3% +1.26% (p=0.004 n=40+40) RegexpMatchMedium_1K-4 23.8MB/s ± 3% 23.7MB/s ± 4% ~ (p=0.121 n=40+40) RegexpMatchHard_32-4 14.5MB/s ± 4% 14.6MB/s ± 4% ~ (p=0.145 n=40+40) RegexpMatchHard_1K-4 15.3MB/s ± 4% 15.2MB/s ± 3% ~ (p=0.874 n=40+40) Revcomp-4 137MB/s ± 2% 137MB/s ± 3% ~ (p=0.179 n=40+40) Template-4 27.7MB/s ± 4% 28.7MB/s ± 3% +3.78% (p=0.000 n=40+40) [Geo mean] 78.9MB/s 79.2MB/s +0.38% Change-Id: I3ba688c253b665485c1ebdf5a75f4ce82cc3def3 Reviewed-on: https://go-review.googlesource.com/102036 Run-TryBot: Brad Fitzpatrick <bradfitz@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Ilya Tocar <ilya.tocar@intel.com> Reviewed-by: Keith Randall <khr@golang.org> |
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