- 06 Sep, 2018 7 commits
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fanzha02 authored
According to ARM64 manual, it is "constrained unpredictable behavior" if the src and dst registers of some load/store instructions are same. In order to completely prevent such unpredictable behavior, adding the check for load/store instructions that are supported by the assembler in the assembler. Add test cases. Update #25823 Change-Id: I64c14ad99ee543d778e7ec8ae6516a532293dbb3 Reviewed-on: https://go-review.googlesource.com/120660 Run-TryBot: Cherry Zhang <cherryyz@google.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by:
Cherry Zhang <cherryyz@google.com>
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Iskander Sharipov authored
Rationale: small buffer optimization does not work and it has made things slower since 2014. Until we can make it work, we should prefer simpler code that also turns out to be more efficient. With this change, it's possible to use NewBuffer(make([]byte, 0, bootstrapSize)) to get the desired stack-allocated initial buffer since escape analysis can prove the created slice to be non-escaping. New implementation key points: - Zero value bytes.Buffer performs better than before - You can have a truly stack-allocated buffer, and it's not even limited to 64 bytes - The unsafe.Sizeof(bytes.Buffer{}) is reduced significantly - Empty writes don't cause allocations Buffer benchmarks from bytes package: name old time/op new time/op delta ReadString-8 9.20µs ± 1% 9.22µs ± 1% ~ (p=0.148 n=10+10) WriteByte-8 28.1µs ± 0% 26.2µs ± 0% -6.78% (p=0.000 n=10+10) WriteRune-8 64.9µs ± 0% 65.0µs ± 0% +0.16% (p=0.000 n=10+10) BufferNotEmptyWriteRead-8 469µs ± 0% 461µs ± 0% -1.76% (p=0.000 n=9+10) BufferFullSmallReads-8 108µs ± 0% 108µs ± 0% -0.21% (p=0.000 n=10+10) name old speed new speed delta ReadString-8 3.56GB/s ± 1% 3.55GB/s ± 1% ~ (p=0.165 n=10+10) WriteByte-8 146MB/s ± 0% 156MB/s ± 0% +7.26% (p=0.000 n=9+10) WriteRune-8 189MB/s ± 0% 189MB/s ± 0% -0.16% (p=0.000 n=10+10) name old alloc/op new alloc/op delta ReadString-8 32.8kB ± 0% 32.8kB ± 0% ~ (all equal) WriteByte-8 0.00B 0.00B ~ (all equal) WriteRune-8 0.00B 0.00B ~ (all equal) BufferNotEmptyWriteRead-8 4.72kB ± 0% 4.67kB ± 0% -1.02% (p=0.000 n=10+10) BufferFullSmallReads-8 3.44kB ± 0% 3.33kB ± 0% -3.26% (p=0.000 n=10+10) name old allocs/op new allocs/op delta ReadString-8 1.00 ± 0% 1.00 ± 0% ~ (all equal) WriteByte-8 0.00 0.00 ~ (all equal) WriteRune-8 0.00 0.00 ~ (all equal) BufferNotEmptyWriteRead-8 3.00 ± 0% 3.00 ± 0% ~ (all equal) BufferFullSmallReads-8 3.00 ± 0% 2.00 ± 0% -33.33% (p=0.000 n=10+10) The most notable thing in go1 benchmarks is reduced allocs in HTTPClientServer (-1 alloc): HTTPClientServer-8 64.0 ± 0% 63.0 ± 0% -1.56% (p=0.000 n=10+10) For more explanations and benchmarks see the referenced issue. Updates #7921 Change-Id: Ica0bf85e1b70fb4f5dc4f6a61045e2cf4ef72aa3 Reviewed-on: https://go-review.googlesource.com/133715Reviewed-by:Martin Möhrmann <moehrmann@google.com> Reviewed-by:
Robert Griesemer <gri@golang.org> Reviewed-by:
Brad Fitzpatrick <bradfitz@golang.org>
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Jake B authored
This builds on: https://github.com/golang/go/pull/27445 "...And then send change to fix windows internal/poll.FD.WriteTo - together with making TestUDPZeroBytePayload run again." - alexbrainman - https://github.com/golang/go/issues/26668#issuecomment-408657503 Fixes #26668 Change-Id: Icd9ecb07458f13e580b3e7163a5946ccec342509 GitHub-Last-Rev: 3bf2b8b46bb8cf79903930631433a1f2ce50ec42 GitHub-Pull-Request: golang/go#27446 Reviewed-on: https://go-review.googlesource.com/132781 Run-TryBot: Alex Brainman <alex.brainman@gmail.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by:
Alex Brainman <alex.brainman@gmail.com>
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Ian Davis authored
Fixes: #27464 Change-Id: I270c56fd0d5ae8787a1293029aff3072f4f52f33 Reviewed-on: https://go-review.googlesource.com/132955Reviewed-by:
Daniel Martí <mvdan@mvdan.cc> Run-TryBot: Daniel Martí <mvdan@mvdan.cc> TryBot-Result: Gobot Gobot <gobot@golang.org>
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Warren Fernandes authored
Change-Id: Ibc40237981fdd20316f73f7f6f3dfa918dd0af5d Reviewed-on: https://go-review.googlesource.com/133658Reviewed-by:
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Warren Fernandes authored
Updates golang/go#27376. Change-Id: Ia8608561eb6a268aa7eae8c39c7098df100b643a Reviewed-on: https://go-review.googlesource.com/133075Reviewed-by:
Kevin Burke <kev@inburke.com> Run-TryBot: Kevin Burke <kev@inburke.com> TryBot-Result: Gobot Gobot <gobot@golang.org>
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taylorza authored
The existing implementation causes a compiler panic if a function parameter shadows a built-in function, and then calling that shadowed name. Fixes #27356 Change-Id: I1ffb6dc01e63c7f499e5f6f75f77ce2318f35bcd Reviewed-on: https://go-review.googlesource.com/132876Reviewed-by:
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- 05 Sep, 2018 17 commits
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Daniel Martí authored
First, move the strings.Count logic out of emit, since only itemText requires that. Use it in those call sites. itemLeftDelim and itemRightDelim cannot contain newlines, as they're the "{{" and "}}" tokens. Secondly, introduce a startLine lexer field so that we don't have to keep track of it elsewhere. That's also a requirement to move the strings.Count out of emit, as emit modifies the start position field. Change-Id: I69175f403487607a8e5b561b3f1916ee9dc3c0c6 Reviewed-on: https://go-review.googlesource.com/132275 Run-TryBot: Daniel Martí <mvdan@mvdan.cc> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by:Rob Pike <r@golang.org>
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Michael Munday authored
The formatting verb '%#x' was used for uint32 values in CL 132956. This fixes TestFormats. Change-Id: I3ab6519bde2cb74410fdca14829689cb46bf7022 Reviewed-on: https://go-review.googlesource.com/133595 Run-TryBot: Michael Munday <mike.munday@ibm.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by:
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Robert Griesemer authored
https://go-review.googlesource.com/c/go/+/132355 addressed a crash and inadvertently fixed #27346; however the comment added to the type-checker was incorrect and misleading. This CL fixes the comment, and adds a test case for #27346. Fixes #27346. Updates #22467. Change-Id: Ib6d5caedf302fd42929c4dacc55e973c1aebfe85 Reviewed-on: https://go-review.googlesource.com/133415 Run-TryBot: Robert Griesemer <gri@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by:
Rebecca Stambler <rstambler@golang.org>
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Michael Munday authored
Signalling NaNs were being converted to quiet NaNs during constant propagation through integer <-> float store-to-load forwarding. This occurs because we store float32 constants as float64 values and CPU hardware 'quietens' NaNs during conversion between the two. Eventually we want to move to using float32 values to store float32 constants, however this will be a big change since both the compiler and the assembler expect float64 values. So for now this is a small change that will fix the immediate issue. Fixes #27193. Change-Id: Iac54bd8c13abe26f9396712bc71f9b396f842724 Reviewed-on: https://go-review.googlesource.com/132956 Run-TryBot: Michael Munday <mike.munday@ibm.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by:
Keith Randall <khr@golang.org>
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Ben Shi authored
Optimize (CMPconst [0] (ADD x y)) to (CMN x y) will only get benefits when the result of the addition is no longer used, otherwise there might be even performance drop. And this CL fixes that issue for CMP/CMN/TST/TEQ. There is little regression in the go1 benchmark (excluding noise), and the test case JSONDecode-4 even gets improvement. name old time/op new time/op delta BinaryTree17-4 21.6s ± 1% 21.6s ± 0% -0.22% (p=0.013 n=30+30) Fannkuch11-4 11.1s ± 0% 11.1s ± 0% +0.11% (p=0.000 n=30+29) FmtFprintfEmpty-4 297ns ± 0% 297ns ± 0% +0.08% (p=0.007 n=26+28) FmtFprintfString-4 589ns ± 1% 589ns ± 0% ~ (p=0.659 n=30+25) FmtFprintfInt-4 644ns ± 1% 650ns ± 0% +0.88% (p=0.000 n=30+24) FmtFprintfIntInt-4 964ns ± 0% 977ns ± 0% +1.33% (p=0.000 n=30+30) FmtFprintfPrefixedInt-4 1.06µs ± 0% 1.07µs ± 0% +1.31% (p=0.000 n=29+27) FmtFprintfFloat-4 1.89µs ± 0% 1.92µs ± 0% +1.25% (p=0.000 n=29+29) FmtManyArgs-4 3.63µs ± 0% 3.67µs ± 0% +1.33% (p=0.000 n=29+27) GobDecode-4 38.1ms ± 1% 37.9ms ± 1% -0.60% (p=0.000 n=29+29) GobEncode-4 35.3ms ± 2% 35.2ms ± 1% ~ (p=0.286 n=30+30) Gzip-4 2.36s ± 0% 2.37s ± 2% ~ (p=0.277 n=24+28) Gunzip-4 264ms ± 1% 264ms ± 1% ~ (p=0.104 n=28+30) HTTPClientServer-4 1.04ms ± 4% 1.02ms ± 4% -1.65% (p=0.000 n=28+28) JSONEncode-4 78.5ms ± 1% 79.6ms ± 1% +1.34% (p=0.000 n=27+28) JSONDecode-4 379ms ± 4% 352ms ± 5% -7.09% (p=0.000 n=29+30) Mandelbrot200-4 17.6ms ± 0% 17.6ms ± 0% ~ (p=0.206 n=28+29) GoParse-4 21.9ms ± 1% 22.1ms ± 1% +0.87% (p=0.000 n=28+26) RegexpMatchEasy0_32-4 631ns ± 0% 641ns ± 0% +1.63% (p=0.000 n=29+30) RegexpMatchEasy0_1K-4 4.11µs ± 0% 4.11µs ± 0% ~ (p=0.700 n=30+30) RegexpMatchEasy1_32-4 670ns ± 0% 679ns ± 0% +1.37% (p=0.000 n=21+30) RegexpMatchEasy1_1K-4 5.31µs ± 0% 5.26µs ± 0% -1.03% (p=0.000 n=25+28) RegexpMatchMedium_32-4 905ns ± 0% 906ns ± 0% +0.14% (p=0.001 n=30+30) RegexpMatchMedium_1K-4 192µs ± 0% 191µs ± 0% -0.45% (p=0.000 n=29+27) RegexpMatchHard_32-4 11.8µs ± 0% 11.7µs ± 0% -0.39% (p=0.000 n=29+28) RegexpMatchHard_1K-4 347µs ± 0% 347µs ± 0% ~ (p=0.084 n=29+30) Revcomp-4 37.5ms ± 1% 37.5ms ± 1% ~ (p=0.279 n=29+29) Template-4 519ms ± 2% 519ms ± 2% ~ (p=0.652 n=28+29) TimeParse-4 2.83µs ± 0% 2.78µs ± 0% -1.90% (p=0.000 n=27+28) TimeFormat-4 5.79µs ± 0% 5.60µs ± 0% -3.23% (p=0.000 n=29+29) [Geo mean] 331µs 330µs -0.16% name old speed new speed delta GobDecode-4 20.1MB/s ± 1% 20.3MB/s ± 1% +0.61% (p=0.000 n=29+29) GobEncode-4 21.7MB/s ± 2% 21.8MB/s ± 1% ~ (p=0.294 n=30+30) Gzip-4 8.23MB/s ± 1% 8.20MB/s ± 2% ~ (p=0.099 n=26+28) Gunzip-4 73.5MB/s ± 1% 73.4MB/s ± 1% ~ (p=0.107 n=28+30) JSONEncode-4 24.7MB/s ± 1% 24.4MB/s ± 1% -1.32% (p=0.000 n=27+28) JSONDecode-4 5.13MB/s ± 4% 5.52MB/s ± 5% +7.65% (p=0.000 n=29+30) GoParse-4 2.65MB/s ± 1% 2.63MB/s ± 1% -0.87% (p=0.000 n=28+26) RegexpMatchEasy0_32-4 50.7MB/s ± 0% 49.9MB/s ± 0% -1.58% (p=0.000 n=29+29) RegexpMatchEasy0_1K-4 249MB/s ± 0% 249MB/s ± 0% ~ (p=0.342 n=30+28) RegexpMatchEasy1_32-4 47.7MB/s ± 0% 47.1MB/s ± 0% -1.39% (p=0.000 n=26+30) RegexpMatchEasy1_1K-4 193MB/s ± 0% 195MB/s ± 0% +1.04% (p=0.000 n=25+28) RegexpMatchMedium_32-4 1.10MB/s ± 0% 1.10MB/s ± 0% -0.42% (p=0.000 n=30+26) RegexpMatchMedium_1K-4 5.33MB/s ± 0% 5.36MB/s ± 0% +0.43% (p=0.000 n=29+29) RegexpMatchHard_32-4 2.72MB/s ± 0% 2.73MB/s ± 0% +0.37% (p=0.000 n=29+30) RegexpMatchHard_1K-4 2.95MB/s ± 0% 2.95MB/s ± 0% ~ (all equal) Revcomp-4 67.8MB/s ± 1% 67.7MB/s ± 1% ~ (p=0.273 n=29+29) Template-4 3.74MB/s ± 2% 3.74MB/s ± 2% ~ (p=0.665 n=28+29) [Geo mean] 15.2MB/s 15.2MB/s +0.21% Change-Id: Ifed1fb8cc02d5ca52c8bc6c21b6b5bf6dbb2701a Reviewed-on: https://go-review.googlesource.com/132115 Run-TryBot: Ben Shi <powerman1st@163.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by:
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fanzha02 authored
Current assembler rewrites float constants to values stored in memory except 0.0, which is not performant. This patch uses the FMOVS/FMOVD instructions to move some available floating-point immediate constants into SIMD&FP destination registers. These available constants can be encoded into FMOVS/FMOVD instructions, checked by the chipfloat7() function. go1 benchmark results. name old time/op new time/op delta BinaryTree17-8 6.27s ± 1% 6.27s ± 1% ~ (p=0.762 n=10+8) Fannkuch11-8 5.42s ± 1% 5.38s ± 0% -0.63% (p=0.000 n=10+10) FmtFprintfEmpty-8 92.9ns ± 1% 93.4ns ± 0% +0.47% (p=0.004 n=9+8) FmtFprintfString-8 169ns ± 2% 170ns ± 4% ~ (p=0.378 n=10+10) FmtFprintfInt-8 197ns ± 1% 196ns ± 1% -0.77% (p=0.009 n=10+9) FmtFprintfIntInt-8 284ns ± 1% 286ns ± 1% ~ (p=0.051 n=10+10) FmtFprintfPrefixedInt-8 419ns ± 0% 422ns ± 1% +0.69% (p=0.038 n=6+10) FmtFprintfFloat-8 458ns ± 0% 463ns ± 1% +1.14% (p=0.000 n=10+10) FmtManyArgs-8 1.35µs ± 2% 1.36µs ± 1% +0.91% (p=0.043 n=10+10) GobDecode-8 16.0ms ± 2% 15.5ms ± 1% -3.39% (p=0.000 n=10+10) GobEncode-8 11.9ms ± 3% 11.4ms ± 1% -3.98% (p=0.000 n=10+9) Gzip-8 621ms ± 0% 625ms ± 0% +0.59% (p=0.000 n=9+10) Gunzip-8 74.0ms ± 1% 74.3ms ± 0% ~ (p=0.059 n=9+8) HTTPClientServer-8 116µs ± 1% 116µs ± 1% ~ (p=0.165 n=10+10) JSONEncode-8 29.3ms ± 1% 29.5ms ± 0% +0.72% (p=0.001 n=10+10) JSONDecode-8 145ms ± 1% 148ms ± 2% +2.06% (p=0.000 n=10+10) Mandelbrot200-8 9.67ms ± 0% 9.48ms ± 1% -1.92% (p=0.000 n=8+10) GoParse-8 7.55ms ± 0% 7.60ms ± 0% +0.57% (p=0.000 n=9+10) RegexpMatchEasy0_32-8 234ns ± 0% 210ns ± 0% -10.13% (p=0.000 n=8+10) RegexpMatchEasy0_1K-8 753ns ± 1% 729ns ± 0% -3.17% (p=0.000 n=10+8) RegexpMatchEasy1_32-8 225ns ± 0% 224ns ± 0% -0.44% (p=0.000 n=9+9) RegexpMatchEasy1_1K-8 1.03µs ± 0% 1.04µs ± 1% +1.29% (p=0.000 n=10+10) RegexpMatchMedium_32-8 320ns ± 3% 296ns ± 6% -7.50% (p=0.000 n=10+10) RegexpMatchMedium_1K-8 77.0µs ± 5% 73.6µs ± 1% ~ (p=0.393 n=10+10) RegexpMatchHard_32-8 3.93µs ± 0% 3.89µs ± 1% -0.95% (p=0.000 n=10+9) RegexpMatchHard_1K-8 120µs ± 5% 115µs ± 1% ~ (p=0.739 n=10+10) Revcomp-8 1.07s ± 0% 1.08s ± 1% +0.63% (p=0.000 n=10+9) Template-8 165ms ± 1% 163ms ± 1% -1.05% (p=0.001 n=8+10) TimeParse-8 751ns ± 1% 749ns ± 1% ~ (p=0.209 n=10+10) TimeFormat-8 759ns ± 1% 751ns ± 1% -0.96% (p=0.001 n=10+10) name old speed new speed delta GobDecode-8 48.0MB/s ± 2% 49.6MB/s ± 1% +3.50% (p=0.000 n=10+10) GobEncode-8 64.5MB/s ± 3% 67.1MB/s ± 1% +4.08% (p=0.000 n=10+9) Gzip-8 31.2MB/s ± 0% 31.1MB/s ± 0% -0.55% (p=0.000 n=9+8) Gunzip-8 262MB/s ± 1% 261MB/s ± 0% ~ (p=0.059 n=9+8) JSONEncode-8 66.3MB/s ± 1% 65.8MB/s ± 0% -0.72% (p=0.001 n=10+10) JSONDecode-8 13.4MB/s ± 1% 13.2MB/s ± 1% -2.02% (p=0.000 n=10+10) GoParse-8 7.67MB/s ± 0% 7.63MB/s ± 0% -0.57% (p=0.000 n=9+10) RegexpMatchEasy0_32-8 136MB/s ± 0% 152MB/s ± 0% +11.45% (p=0.000 n=10+10) RegexpMatchEasy0_1K-8 1.36GB/s ± 1% 1.40GB/s ± 0% +3.25% (p=0.000 n=10+8) RegexpMatchEasy1_32-8 142MB/s ± 0% 143MB/s ± 0% +0.35% (p=0.000 n=10+9) RegexpMatchEasy1_1K-8 992MB/s ± 0% 980MB/s ± 1% -1.27% (p=0.000 n=10+10) RegexpMatchMedium_32-8 3.12MB/s ± 3% 3.38MB/s ± 6% +8.17% (p=0.000 n=10+10) RegexpMatchMedium_1K-8 13.3MB/s ± 5% 13.9MB/s ± 1% ~ (p=0.362 n=10+10) RegexpMatchHard_32-8 8.14MB/s ± 0% 8.21MB/s ± 1% +0.95% (p=0.000 n=10+9) RegexpMatchHard_1K-8 8.54MB/s ± 5% 8.90MB/s ± 1% ~ (p=0.636 n=10+10) Revcomp-8 238MB/s ± 0% 236MB/s ± 1% -0.63% (p=0.000 n=10+9) Template-8 11.8MB/s ± 1% 11.9MB/s ± 1% +1.07% (p=0.001 n=8+10) Change-Id: I57b372d8dcd47e6aec39893843b20385d5d9c37e Reviewed-on: https://go-review.googlesource.com/129555 Run-TryBot: Cherry Zhang <cherryyz@google.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by:
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Brad Fitzpatrick authored
The ppc64x builders are failing on the new splice test from CL 113997 but the actual failure is being obscured by a test deadlock. Change-Id: I7747f88bcdba9776a3c0d2f5066cfec572706108 Reviewed-on: https://go-review.googlesource.com/133417 Run-TryBot: Brad Fitzpatrick <bradfitz@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by:
Tobias Klauser <tobias.klauser@gmail.com>
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Tobias Klauser authored
The android builders are failing on the AF_UNIX part of the new splice test from CL 113997. Skip them. Change-Id: Ia0519aae922acb11d2845aa687633935bcd4b1b0 Reviewed-on: https://go-review.googlesource.com/133515 Run-TryBot: Tobias Klauser <tobias.klauser@gmail.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by:
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Iskander Sharipov authored
For OINDEX and other Left+Right nodes, we want the whole node to be considered as "may affect memory" if either of Left or Right affect memory. Initial implementation only considered node as such if both Left and Right were non-safe. Change-Id: Icfb965a0b4c24d8f83f3722216db068dad2eba95 Reviewed-on: https://go-review.googlesource.com/133275 Run-TryBot: Iskander Sharipov <iskander.sharipov@intel.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by:
David Chase <drchase@google.com>
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Alessandro Arzilli authored
For some reason on darwin the linker still can't add debug sections to plugins. Executables importing "plugin" do have them, however. Because of issue 25841, plugins on darwin would likely have bad debug info anyway so, for now, this isn't a great loss. This disables the check for debug sections in plugins for darwin only. Updates #27502 Change-Id: Ib8f62dac1e485006b0c2b3ba04f86d733db5ee9a Reviewed-on: https://go-review.googlesource.com/133435Reviewed-by:
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Iskander Sharipov authored
File is compiled with "-l" flag, so go:noinline is redundant. Change-Id: Ia269f3b9de9466857fc578ba5164613393e82369 Reviewed-on: https://go-review.googlesource.com/133295Reviewed-by:
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Milan Knezevic authored
Fixes #27258 Change-Id: I1ac75087e2b811e6479990e12d71f2c1f4f47b64 Reviewed-on: https://go-review.googlesource.com/132015Reviewed-by:
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Tobias Klauser authored
On linux/ppc64{,le} the SYS_SYNC_FILE_RANGE2 syscall is used to implement SyncFileRange. This syscall has a different argument order than SYS_SYNC_FILE_RANGE. Apart from that the implementations of both syscalls are the same, so use a simple wrapper to invoke the syscall with the correct argument order. For context see: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=edd5cd4a9424f22b0fa08bef5e299d41befd5622 Updates #27485 Change-Id: Ib94fb98376bf6c879df6f1b68c3bdd11ebcb5a44 Reviewed-on: https://go-review.googlesource.com/133195 Run-TryBot: Tobias Klauser <tobias.klauser@gmail.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: -
Tobias Klauser authored
CL 131735 only updated nilptr3.go for the adjusted nil check. Adjust nilptr3_wasm.go as well. Change-Id: I4a6257d32bb212666fe768dac53901ea0b051138 Reviewed-on: https://go-review.googlesource.com/133495 Run-TryBot: Tobias Klauser <tobias.klauser@gmail.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by:
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Ben Burkert authored
Rework the splice tests and benchmarks. Move the reading and writing of the spliced connections to child processes so that the I/O is not part of benchmarks or profiles. Enable the use of splice(2) when reading from a unix connection and writing to a TCP connection. The updated benchmarks show a performance gain when using splice(2) to copy large chunks of data that the original benchmark did not capture. name old time/op new time/op delta Splice/tcp-to-tcp/1024-8 5.01µs ± 2% 5.08µs ± 3% ~ (p=0.068 n=8+10) Splice/tcp-to-tcp/2048-8 4.76µs ± 5% 4.65µs ± 3% -2.36% (p=0.015 n=9+8) Splice/tcp-to-tcp/4096-8 4.91µs ± 2% 4.98µs ± 5% ~ (p=0.315 n=9+10) Splice/tcp-to-tcp/8192-8 5.50µs ± 4% 5.44µs ± 3% ~ (p=0.758 n=7+9) Splice/tcp-to-tcp/16384-8 7.65µs ± 7% 6.53µs ± 3% -14.65% (p=0.000 n=10+9) Splice/tcp-to-tcp/32768-8 15.3µs ± 7% 8.5µs ± 5% -44.21% (p=0.000 n=10+10) Splice/tcp-to-tcp/65536-8 30.0µs ± 6% 15.7µs ± 1% -47.58% (p=0.000 n=10+8) Splice/tcp-to-tcp/131072-8 59.2µs ± 2% 27.4µs ± 5% -53.75% (p=0.000 n=9+9) Splice/tcp-to-tcp/262144-8 121µs ± 4% 54µs ±19% -55.56% (p=0.000 n=9+10) Splice/tcp-to-tcp/524288-8 247µs ± 6% 108µs ±12% -56.34% (p=0.000 n=10+10) Splice/tcp-to-tcp/1048576-8 490µs ± 4% 199µs ±12% -59.31% (p=0.000 n=8+10) Splice/unix-to-tcp/1024-8 1.20µs ± 2% 1.35µs ± 7% +12.47% (p=0.000 n=10+10) Splice/unix-to-tcp/2048-8 1.33µs ±12% 1.57µs ± 4% +17.85% (p=0.000 n=9+10) Splice/unix-to-tcp/4096-8 2.24µs ± 4% 1.67µs ± 4% -25.14% (p=0.000 n=9+10) Splice/unix-to-tcp/8192-8 4.59µs ± 8% 2.20µs ±10% -52.01% (p=0.000 n=10+10) Splice/unix-to-tcp/16384-8 8.46µs ±13% 3.48µs ± 6% -58.91% (p=0.000 n=10+10) Splice/unix-to-tcp/32768-8 18.5µs ± 9% 6.1µs ± 9% -66.99% (p=0.000 n=10+10) Splice/unix-to-tcp/65536-8 35.9µs ± 7% 13.5µs ± 6% -62.40% (p=0.000 n=10+9) Splice/unix-to-tcp/131072-8 79.4µs ± 6% 25.7µs ± 4% -67.62% (p=0.000 n=10+9) Splice/unix-to-tcp/262144-8 157µs ± 4% 54µs ± 8% -65.63% (p=0.000 n=10+10) Splice/unix-to-tcp/524288-8 311µs ± 3% 107µs ± 8% -65.74% (p=0.000 n=10+10) Splice/unix-to-tcp/1048576-8 643µs ± 4% 185µs ±32% -71.21% (p=0.000 n=10+10) name old speed new speed delta Splice/tcp-to-tcp/1024-8 204MB/s ± 2% 202MB/s ± 3% ~ (p=0.068 n=8+10) Splice/tcp-to-tcp/2048-8 430MB/s ± 5% 441MB/s ± 3% +2.39% (p=0.014 n=9+8) Splice/tcp-to-tcp/4096-8 833MB/s ± 2% 823MB/s ± 5% ~ (p=0.315 n=9+10) Splice/tcp-to-tcp/8192-8 1.49GB/s ± 4% 1.51GB/s ± 3% ~ (p=0.758 n=7+9) Splice/tcp-to-tcp/16384-8 2.14GB/s ± 7% 2.51GB/s ± 3% +17.03% (p=0.000 n=10+9) Splice/tcp-to-tcp/32768-8 2.15GB/s ± 7% 3.85GB/s ± 5% +79.11% (p=0.000 n=10+10) Splice/tcp-to-tcp/65536-8 2.19GB/s ± 5% 4.17GB/s ± 1% +90.65% (p=0.000 n=10+8) Splice/tcp-to-tcp/131072-8 2.22GB/s ± 2% 4.79GB/s ± 4% +116.26% (p=0.000 n=9+9) Splice/tcp-to-tcp/262144-8 2.17GB/s ± 4% 4.93GB/s ±17% +127.25% (p=0.000 n=9+10) Splice/tcp-to-tcp/524288-8 2.13GB/s ± 6% 4.89GB/s ±13% +130.15% (p=0.000 n=10+10) Splice/tcp-to-tcp/1048576-8 2.09GB/s ±10% 5.29GB/s ±11% +153.36% (p=0.000 n=10+10) Splice/unix-to-tcp/1024-8 850MB/s ± 2% 757MB/s ± 7% -10.94% (p=0.000 n=10+10) Splice/unix-to-tcp/2048-8 1.54GB/s ±11% 1.31GB/s ± 3% -15.32% (p=0.000 n=9+10) Splice/unix-to-tcp/4096-8 1.83GB/s ± 4% 2.45GB/s ± 4% +33.59% (p=0.000 n=9+10) Splice/unix-to-tcp/8192-8 1.79GB/s ± 9% 3.73GB/s ± 9% +108.05% (p=0.000 n=10+10) Splice/unix-to-tcp/16384-8 1.95GB/s ±13% 4.68GB/s ± 3% +139.80% (p=0.000 n=10+9) Splice/unix-to-tcp/32768-8 1.78GB/s ± 9% 5.38GB/s ±10% +202.71% (p=0.000 n=10+10) Splice/unix-to-tcp/65536-8 1.83GB/s ± 8% 4.85GB/s ± 6% +165.70% (p=0.000 n=10+9) Splice/unix-to-tcp/131072-8 1.65GB/s ± 6% 5.10GB/s ± 4% +208.77% (p=0.000 n=10+9) Splice/unix-to-tcp/262144-8 1.67GB/s ± 4% 4.87GB/s ± 7% +191.19% (p=0.000 n=10+10) Splice/unix-to-tcp/524288-8 1.69GB/s ± 3% 4.93GB/s ± 7% +192.38% (p=0.000 n=10+10) Splice/unix-to-tcp/1048576-8 1.63GB/s ± 3% 5.60GB/s ±44% +243.26% (p=0.000 n=10+9) Change-Id: I1eae4c3459c918558c70fc42283db22ff7e0442c Reviewed-on: https://go-review.googlesource.com/113997Reviewed-by:
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Michael Munday authored
Extends CL 132435 to s390x. s390x has 32- and 64-bit variable rotate left instructions. Change-Id: Ic4f1ebb0e0543207ed2fc8c119e0163b428138a5 Reviewed-on: https://go-review.googlesource.com/133035 Run-TryBot: Michael Munday <mike.munday@ibm.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by:
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Ben Shi authored
Add more optimization with TST/CMN. 1. A tiny benchmark shows more than 12% improvement. TSTCMN-4 378µs ± 0% 332µs ± 0% -12.15% (p=0.000 n=30+27) (https://github.com/benshi001/ugo1/blob/master/tstcmn_test.go) 2. There is little regression in the go1 benchmark, excluding noise. name old time/op new time/op delta BinaryTree17-4 19.1s ± 0% 19.1s ± 0% ~ (p=0.994 n=28+29) Fannkuch11-4 10.0s ± 0% 10.0s ± 0% ~ (p=0.198 n=30+25) FmtFprintfEmpty-4 233ns ± 0% 233ns ± 0% +0.14% (p=0.002 n=24+30) FmtFprintfString-4 428ns ± 0% 428ns ± 0% ~ (all equal) FmtFprintfInt-4 472ns ± 0% 472ns ± 0% ~ (all equal) FmtFprintfIntInt-4 725ns ± 0% 725ns ± 0% ~ (all equal) FmtFprintfPrefixedInt-4 889ns ± 0% 888ns ± 0% ~ (p=0.632 n=28+30) FmtFprintfFloat-4 1.20µs ± 0% 1.20µs ± 0% +0.05% (p=0.001 n=18+30) FmtManyArgs-4 3.00µs ± 0% 2.99µs ± 0% -0.07% (p=0.001 n=27+30) GobDecode-4 42.1ms ± 0% 42.2ms ± 0% +0.29% (p=0.000 n=28+28) GobEncode-4 38.6ms ± 9% 38.8ms ± 9% ~ (p=0.912 n=30+30) Gzip-4 2.07s ± 1% 2.05s ± 1% -0.64% (p=0.000 n=29+30) Gunzip-4 175ms ± 0% 175ms ± 0% -0.15% (p=0.001 n=30+30) HTTPClientServer-4 872µs ± 5% 880µs ± 6% ~ (p=0.196 n=30+29) JSONEncode-4 88.5ms ± 1% 89.8ms ± 1% +1.49% (p=0.000 n=23+24) JSONDecode-4 393ms ± 1% 390ms ± 1% -0.89% (p=0.000 n=28+30) Mandelbrot200-4 19.5ms ± 0% 19.5ms ± 0% ~ (p=0.405 n=29+28) GoParse-4 19.9ms ± 0% 20.0ms ± 0% +0.27% (p=0.000 n=30+30) RegexpMatchEasy0_32-4 431ns ± 0% 431ns ± 0% ~ (p=1.000 n=30+30) RegexpMatchEasy0_1K-4 1.61µs ± 0% 1.61µs ± 0% ~ (p=0.527 n=26+26) RegexpMatchEasy1_32-4 443ns ± 0% 443ns ± 0% ~ (all equal) RegexpMatchEasy1_1K-4 2.58µs ± 1% 2.58µs ± 1% ~ (p=0.578 n=27+25) RegexpMatchMedium_32-4 740ns ± 0% 740ns ± 0% ~ (p=0.357 n=30+30) RegexpMatchMedium_1K-4 223µs ± 0% 223µs ± 0% +0.16% (p=0.000 n=30+29) RegexpMatchHard_32-4 12.3µs ± 0% 12.3µs ± 0% ~ (p=0.236 n=27+27) RegexpMatchHard_1K-4 371µs ± 0% 371µs ± 0% +0.09% (p=0.000 n=30+27) Revcomp-4 2.85s ± 0% 2.85s ± 0% ~ (p=0.057 n=28+25) Template-4 408ms ± 1% 409ms ± 1% ~ (p=0.117 n=29+29) TimeParse-4 1.93µs ± 0% 1.93µs ± 0% ~ (p=0.535 n=29+28) TimeFormat-4 1.99µs ± 0% 1.99µs ± 0% ~ (p=0.168 n=29+28) [Geo mean] 306µs 307µs +0.07% name old speed new speed delta GobDecode-4 18.3MB/s ± 0% 18.2MB/s ± 0% -0.31% (p=0.000 n=28+29) GobEncode-4 19.9MB/s ± 8% 19.8MB/s ± 9% ~ (p=0.923 n=30+30) Gzip-4 9.39MB/s ± 1% 9.45MB/s ± 1% +0.65% (p=0.000 n=29+30) Gunzip-4 111MB/s ± 0% 111MB/s ± 0% +0.15% (p=0.001 n=30+30) JSONEncode-4 21.9MB/s ± 1% 21.6MB/s ± 1% -1.45% (p=0.000 n=23+23) JSONDecode-4 4.94MB/s ± 1% 4.98MB/s ± 1% +0.84% (p=0.000 n=27+30) GoParse-4 2.91MB/s ± 0% 2.90MB/s ± 0% -0.34% (p=0.000 n=21+22) RegexpMatchEasy0_32-4 74.1MB/s ± 0% 74.1MB/s ± 0% ~ (p=0.469 n=29+28) RegexpMatchEasy0_1K-4 634MB/s ± 0% 634MB/s ± 0% ~ (p=0.978 n=24+28) RegexpMatchEasy1_32-4 72.2MB/s ± 0% 72.2MB/s ± 0% ~ (p=0.064 n=27+29) RegexpMatchEasy1_1K-4 396MB/s ± 1% 396MB/s ± 1% ~ (p=0.583 n=27+25) RegexpMatchMedium_32-4 1.35MB/s ± 0% 1.35MB/s ± 0% ~ (all equal) RegexpMatchMedium_1K-4 4.60MB/s ± 0% 4.59MB/s ± 0% -0.14% (p=0.000 n=30+26) RegexpMatchHard_32-4 2.61MB/s ± 0% 2.61MB/s ± 0% ~ (all equal) RegexpMatchHard_1K-4 2.76MB/s ± 0% 2.76MB/s ± 0% ~ (all equal) Revcomp-4 89.1MB/s ± 0% 89.1MB/s ± 0% ~ (p=0.059 n=28+25) Template-4 4.75MB/s ± 1% 4.75MB/s ± 1% ~ (p=0.106 n=29+29) [Geo mean] 18.3MB/s 18.3MB/s -0.07% Change-Id: I3cd76ce63e84b0c3cebabf9fa3573b76a7343899 Reviewed-on: https://go-review.googlesource.com/124935 Run-TryBot: Ben Shi <powerman1st@163.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by:
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- 04 Sep, 2018 10 commits
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Ben Shi authored
MADD does MUL-ADD in a single instruction, and MSUB does the similiar simplification for MUL-SUB. The CL implements the optimization with MADD/MSUB. 1. The total size of pkg/android_arm64/ decreases about 20KB, excluding cmd/compile/. 2. The go1 benchmark shows a little improvement for RegexpMatchHard_32-4 and Template-4, excluding noise. name old time/op new time/op delta BinaryTree17-4 16.3s ± 1% 16.5s ± 1% +1.41% (p=0.000 n=26+28) Fannkuch11-4 8.79s ± 1% 8.76s ± 0% -0.36% (p=0.000 n=26+28) FmtFprintfEmpty-4 172ns ± 0% 172ns ± 0% ~ (all equal) FmtFprintfString-4 362ns ± 1% 364ns ± 0% +0.55% (p=0.000 n=30+30) FmtFprintfInt-4 416ns ± 0% 416ns ± 0% ~ (p=0.099 n=22+30) FmtFprintfIntInt-4 655ns ± 1% 660ns ± 1% +0.76% (p=0.000 n=30+30) FmtFprintfPrefixedInt-4 810ns ± 0% 809ns ± 0% -0.08% (p=0.009 n=29+29) FmtFprintfFloat-4 1.08µs ± 0% 1.09µs ± 0% +0.61% (p=0.000 n=30+29) FmtManyArgs-4 2.70µs ± 0% 2.69µs ± 0% -0.23% (p=0.000 n=29+28) GobDecode-4 32.2ms ± 1% 32.1ms ± 1% -0.39% (p=0.000 n=27+26) GobEncode-4 27.4ms ± 2% 27.4ms ± 1% ~ (p=0.864 n=28+28) Gzip-4 1.53s ± 1% 1.52s ± 1% -0.30% (p=0.031 n=29+29) Gunzip-4 146ms ± 0% 146ms ± 0% -0.14% (p=0.001 n=25+30) HTTPClientServer-4 1.00ms ± 4% 0.98ms ± 6% -1.65% (p=0.001 n=29+30) JSONEncode-4 67.3ms ± 1% 67.2ms ± 1% ~ (p=0.520 n=28+28) JSONDecode-4 329ms ± 5% 330ms ± 4% ~ (p=0.142 n=30+30) Mandelbrot200-4 17.3ms ± 0% 17.3ms ± 0% ~ (p=0.055 n=26+29) GoParse-4 16.9ms ± 1% 17.0ms ± 1% +0.82% (p=0.000 n=30+30) RegexpMatchEasy0_32-4 382ns ± 0% 382ns ± 0% ~ (all equal) RegexpMatchEasy0_1K-4 1.33µs ± 0% 1.33µs ± 0% -0.25% (p=0.000 n=30+27) RegexpMatchEasy1_32-4 361ns ± 0% 361ns ± 0% -0.08% (p=0.002 n=30+28) RegexpMatchEasy1_1K-4 2.11µs ± 0% 2.09µs ± 0% -0.54% (p=0.000 n=30+29) RegexpMatchMedium_32-4 594ns ± 0% 592ns ± 0% -0.32% (p=0.000 n=30+30) RegexpMatchMedium_1K-4 173µs ± 0% 172µs ± 0% -0.77% (p=0.000 n=29+27) RegexpMatchHard_32-4 10.4µs ± 0% 10.1µs ± 0% -3.63% (p=0.000 n=28+27) RegexpMatchHard_1K-4 306µs ± 0% 301µs ± 0% -1.64% (p=0.000 n=29+30) Revcomp-4 2.51s ± 1% 2.52s ± 0% +0.18% (p=0.017 n=26+27) Template-4 394ms ± 3% 382ms ± 3% -3.22% (p=0.000 n=28+28) TimeParse-4 1.67µs ± 0% 1.67µs ± 0% +0.05% (p=0.030 n=27+30) TimeFormat-4 1.72µs ± 0% 1.70µs ± 0% -0.79% (p=0.000 n=28+26) [Geo mean] 259µs 259µs -0.33% name old speed new speed delta GobDecode-4 23.8MB/s ± 1% 23.9MB/s ± 1% +0.40% (p=0.001 n=27+26) GobEncode-4 28.0MB/s ± 2% 28.0MB/s ± 1% ~ (p=0.863 n=28+28) Gzip-4 12.7MB/s ± 1% 12.7MB/s ± 1% +0.32% (p=0.026 n=29+29) Gunzip-4 133MB/s ± 0% 133MB/s ± 0% +0.15% (p=0.001 n=24+30) JSONEncode-4 28.8MB/s ± 1% 28.9MB/s ± 1% ~ (p=0.475 n=28+28) JSONDecode-4 5.89MB/s ± 4% 5.87MB/s ± 5% ~ (p=0.174 n=29+30) GoParse-4 3.43MB/s ± 0% 3.40MB/s ± 1% -0.83% (p=0.000 n=28+30) RegexpMatchEasy0_32-4 83.6MB/s ± 0% 83.6MB/s ± 0% ~ (p=0.848 n=28+29) RegexpMatchEasy0_1K-4 768MB/s ± 0% 770MB/s ± 0% +0.25% (p=0.000 n=30+27) RegexpMatchEasy1_32-4 88.5MB/s ± 0% 88.5MB/s ± 0% ~ (p=0.086 n=29+29) RegexpMatchEasy1_1K-4 486MB/s ± 0% 489MB/s ± 0% +0.54% (p=0.000 n=30+29) RegexpMatchMedium_32-4 1.68MB/s ± 0% 1.69MB/s ± 0% +0.60% (p=0.000 n=30+23) RegexpMatchMedium_1K-4 5.90MB/s ± 0% 5.95MB/s ± 0% +0.85% (p=0.000 n=18+20) RegexpMatchHard_32-4 3.07MB/s ± 0% 3.18MB/s ± 0% +3.72% (p=0.000 n=29+26) RegexpMatchHard_1K-4 3.35MB/s ± 0% 3.40MB/s ± 0% +1.69% (p=0.000 n=30+30) Revcomp-4 101MB/s ± 0% 101MB/s ± 0% -0.18% (p=0.018 n=26+27) Template-4 4.92MB/s ± 4% 5.09MB/s ± 3% +3.31% (p=0.000 n=28+28) [Geo mean] 22.4MB/s 22.6MB/s +0.62% Change-Id: I8f304b272785739f57b3c8f736316f658f8c1b2a Reviewed-on: https://go-review.googlesource.com/129119 Run-TryBot: Ben Shi <powerman1st@163.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by:
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Ben Shi authored
LDADDALD(64-bit) and LDADDALW(32-bit) are already supported. This CL adds supports of LDADDALH(16-bit) and LDADDALB(8-bit). Change-Id: I4eac61adcec226d618dfce88618a2b98f5f1afe7 Reviewed-on: https://go-review.googlesource.com/132135 Run-TryBot: Ben Shi <powerman1st@163.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by:
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Agniva De Sarker authored
Fixes #27243 Change-Id: If9230244938dabd03b9afaa6600310df8f97fe92 Reviewed-on: https://go-review.googlesource.com/131775Reviewed-by:
Bryan C. Mills <bcmills@google.com>
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Matthew Dempsky authored
Makes the error message more consistent between OAS and OAS2. Fixes #26616. Change-Id: I07ab46c5ef8a37efb2cb557632697f5d1bf789f7 Reviewed-on: https://go-review.googlesource.com/131280 Run-TryBot: Matthew Dempsky <mdempsky@google.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by:
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Alessandro Arzilli authored
Splits part of dwarfgeneratedebugsyms into a new function, dwarfGenerateDebugInfo which is called between deadcode elimination and type name mangling. This function takes care of collecting and processing the DIEs for all functions and package-level variables and also generates DIEs for all types used in the program. Fixes #23733 Change-Id: I75ef0608fbed2dffc3be7a477f1b03e7e740ec61 Reviewed-on: https://go-review.googlesource.com/111237 Run-TryBot: Heschi Kreinick <heschi@google.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by:
Heschi Kreinick <heschi@google.com>
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Alexey Naidonov authored
Removes unnecessary nil-check when referencing offset from an address. Suggested by Keith Randall in golang/go#27180. Updates golang/go#27180 Change-Id: I326ed7fda7cfa98b7e4354c811900707fee26021 Reviewed-on: https://go-review.googlesource.com/131735Reviewed-by:
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Josh Bleecher Snyder authored
This prevents accidental regalloc regressions that otherwise can occur from unrelated changes. Change-Id: Iea356fb1a24766361fce13748dc1b46e57b21cea Reviewed-on: https://go-review.googlesource.com/129375 Run-TryBot: Josh Bleecher Snyder <josharian@gmail.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by:
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Josh Bleecher Snyder authored
There's no need to manually manage the backing slice for bs. Removing it simplifies the code, removes some allocations, and speeds it up slightly. Fixes #27403 name old time/op new time/op delta ReadSlice1000Int32s-8 6.39µs ± 1% 6.31µs ± 1% -1.37% (p=0.000 n=27+27) ReadStruct-8 1.25µs ± 2% 1.23µs ± 2% -1.06% (p=0.003 n=30+29) ReadInts-8 301ns ± 0% 297ns ± 1% -1.21% (p=0.000 n=27+30) WriteInts-8 325ns ± 1% 320ns ± 1% -1.59% (p=0.000 n=26+29) WriteSlice1000Int32s-8 6.60µs ± 0% 6.52µs ± 0% -1.23% (p=0.000 n=28+27) PutUint16-8 0.72ns ± 2% 0.71ns ± 2% ~ (p=0.286 n=30+30) PutUint32-8 0.71ns ± 1% 0.71ns ± 0% -0.42% (p=0.003 n=30+25) PutUint64-8 0.78ns ± 2% 0.78ns ± 0% -0.55% (p=0.001 n=30+27) LittleEndianPutUint16-8 0.57ns ± 0% 0.57ns ± 0% ~ (all equal) LittleEndianPutUint32-8 0.57ns ± 0% 0.57ns ± 0% ~ (all equal) LittleEndianPutUint64-8 0.57ns ± 0% 0.57ns ± 0% ~ (all equal) PutUvarint32-8 23.1ns ± 1% 23.1ns ± 1% ~ (p=0.925 n=26+29) PutUvarint64-8 57.5ns ± 2% 57.3ns ± 1% ~ (p=0.338 n=30+26) [Geo mean] 23.0ns 22.9ns -0.61% name old speed new speed delta ReadSlice1000Int32s-8 626MB/s ± 1% 634MB/s ± 1% +1.38% (p=0.000 n=27+27) ReadStruct-8 60.2MB/s ± 2% 60.8MB/s ± 2% +1.08% (p=0.002 n=30+29) ReadInts-8 100MB/s ± 1% 101MB/s ± 1% +1.24% (p=0.000 n=27+30) WriteInts-8 92.2MB/s ± 1% 93.6MB/s ± 1% +1.56% (p=0.000 n=26+29) WriteSlice1000Int32s-8 606MB/s ± 0% 614MB/s ± 0% +1.24% (p=0.000 n=28+27) PutUint16-8 2.80GB/s ± 1% 2.80GB/s ± 1% ~ (p=0.095 n=28+29) PutUint32-8 5.61GB/s ± 1% 5.62GB/s ± 1% ~ (p=0.069 n=27+28) PutUint64-8 10.2GB/s ± 1% 10.2GB/s ± 0% +0.15% (p=0.039 n=27+27) LittleEndianPutUint16-8 3.50GB/s ± 1% 3.50GB/s ± 1% ~ (p=0.552 n=30+29) LittleEndianPutUint32-8 7.01GB/s ± 1% 7.02GB/s ± 1% ~ (p=0.160 n=29+27) LittleEndianPutUint64-8 14.0GB/s ± 1% 14.0GB/s ± 1% ~ (p=0.413 n=29+29) PutUvarint32-8 174MB/s ± 1% 173MB/s ± 1% ~ (p=0.648 n=25+30) PutUvarint64-8 139MB/s ± 2% 140MB/s ± 1% ~ (p=0.271 n=30+26) [Geo mean] 906MB/s 911MB/s +0.55% name old alloc/op new alloc/op delta ReadSlice1000Int32s-8 4.14kB ± 0% 4.13kB ± 0% -0.19% (p=0.000 n=30+30) ReadStruct-8 200B ± 0% 200B ± 0% ~ (all equal) ReadInts-8 64.0B ± 0% 32.0B ± 0% -50.00% (p=0.000 n=30+30) WriteInts-8 112B ± 0% 64B ± 0% -42.86% (p=0.000 n=30+30) WriteSlice1000Int32s-8 4.14kB ± 0% 4.13kB ± 0% -0.19% (p=0.000 n=30+30) PutUint16-8 0.00B 0.00B ~ (all equal) PutUint32-8 0.00B 0.00B ~ (all equal) PutUint64-8 0.00B 0.00B ~ (all equal) LittleEndianPutUint16-8 0.00B 0.00B ~ (all equal) LittleEndianPutUint32-8 0.00B 0.00B ~ (all equal) LittleEndianPutUint64-8 0.00B 0.00B ~ (all equal) PutUvarint32-8 0.00B 0.00B ~ (all equal) PutUvarint64-8 0.00B 0.00B ~ (all equal) [Geo mean] 476B 370B -22.22% name old allocs/op new allocs/op delta ReadSlice1000Int32s-8 3.00 ± 0% 2.00 ± 0% -33.33% (p=0.000 n=30+30) ReadStruct-8 16.0 ± 0% 16.0 ± 0% ~ (all equal) ReadInts-8 8.00 ± 0% 8.00 ± 0% ~ (all equal) WriteInts-8 14.0 ± 0% 14.0 ± 0% ~ (all equal) WriteSlice1000Int32s-8 3.00 ± 0% 2.00 ± 0% -33.33% (p=0.000 n=30+30) PutUint16-8 0.00 0.00 ~ (all equal) PutUint32-8 0.00 0.00 ~ (all equal) PutUint64-8 0.00 0.00 ~ (all equal) LittleEndianPutUint16-8 0.00 0.00 ~ (all equal) LittleEndianPutUint32-8 0.00 0.00 ~ (all equal) LittleEndianPutUint64-8 0.00 0.00 ~ (all equal) PutUvarint32-8 0.00 0.00 ~ (all equal) PutUvarint64-8 0.00 0.00 ~ (all equal) [Geo mean] 6.94 5.90 -14.97% Change-Id: I3790b93e4190d98621d5f2c47e42929a18f56c2e Reviewed-on: https://go-review.googlesource.com/133135 Run-TryBot: Josh Bleecher Snyder <josharian@gmail.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by:
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Agniva De Sarker authored
The same catch block is there in wasm_exec.js for node processes. Added it in browser invocations too, to prevent uncaught exceptions. Change-Id: Icab577ec585fa86df3c76db508b49401bcdb52ae Reviewed-on: https://go-review.googlesource.com/132916Reviewed-by:
Richard Musiol <neelance@gmail.com> Run-TryBot: Brad Fitzpatrick <bradfitz@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org>
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Leigh McCulloch authored
The indirectType function comment uses the phrase 'layed out'. In the context of that phrase, where something is being placed or sprawled, the word should be 'laid'. 'Layed' is a misspelling of 'laid'. Change-Id: I05ecb97637276e2252c47e92a0bd678130714889 GitHub-Last-Rev: 6ee67371b42c12ceaf4c6c245319748008ac7e7b GitHub-Pull-Request: golang/go#27444 Reviewed-on: https://go-review.googlesource.com/132779Reviewed-by:
Ian Lance Taylor <iant@golang.org>
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- 03 Sep, 2018 6 commits
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Iskander Sharipov authored
Make OAS2 and OAS2FUNC sink locations point to the assignment position, not the nth LHS position. Fixes #26987 Change-Id: Ibeb9df2da754da8b6638fe1e49e813f37515c13c Reviewed-on: https://go-review.googlesource.com/129315 Run-TryBot: Iskander Sharipov <iskander.sharipov@intel.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by:
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Alexey Palazhchenko authored
Fixes #27202 Change-Id: I83620748a81500e433795c7b2b7f13399d17f777 GitHub-Last-Rev: 64457e12ceaa408efc7f75091f1b30c35b8e5d44 GitHub-Pull-Request: golang/go#27472 Reviewed-on: https://go-review.googlesource.com/133057Reviewed-by:
Daniel Theophanes <kardianos@gmail.com>
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Ivan Kutuzov authored
Fixes #22238 Change-Id: I8184f789bd4120f3e71c9374c7c2fcbfa95935bf Reviewed-on: https://go-review.googlesource.com/132635Reviewed-by:
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Michael Munday authored
This CL implements the math/bits.OnesCount{8,16,32,64} functions as intrinsics on s390x using the 'population count' (popcnt) instruction. This instruction was released as the 'population-count' facility which uses the same facility bit (45) as the 'distinct-operands' facility which is a pre-requisite for Go on s390x. We can therefore use it without a feature check. The s390x popcnt instruction treats a 64 bit register as a vector of 8 bytes, summing the number of ones in each byte individually. It then writes the results to the corresponding bytes in the output register. Therefore to implement OnesCount{16,32,64} we need to sum the individual byte counts using some extra instructions. To do this efficiently I've added some additional pseudo operations to the s390x SSA backend. Unlike other architectures the new instruction sequence is faster for OnesCount8, so that is implemented using the intrinsic. name old time/op new time/op delta OnesCount 3.21ns ± 1% 1.35ns ± 0% -58.00% (p=0.000 n=20+20) OnesCount8 0.91ns ± 1% 0.81ns ± 0% -11.43% (p=0.000 n=20+20) OnesCount16 1.51ns ± 3% 1.21ns ± 0% -19.71% (p=0.000 n=20+17) OnesCount32 1.91ns ± 0% 1.12ns ± 1% -41.60% (p=0.000 n=19+20) OnesCount64 3.18ns ± 4% 1.35ns ± 0% -57.52% (p=0.000 n=20+20) Change-Id: Id54f0bd28b6db9a887ad12c0d72fcc168ef9c4e0 Reviewed-on: https://go-review.googlesource.com/114675 Run-TryBot: Michael Munday <mike.munday@ibm.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: -
Iskander Sharipov authored
Teach escape analysis to recognize these assignment patterns as not causing the src to leak: val.x = val.y val.x[i] = val.y[j] val.x1.x2 = val.x1.y2 ... etc Helps to avoid "leaking param" with assignments showed above. The implementation is based on somewhat similiar xs=xs[a:b] special case that is ignored by the escape analysis. We may figure out more generalized version of this, but this one looks like a safe step into that direction. Updates #14858 Change-Id: I6fe5bfedec9c03bdc1d7624883324a523bd11fde Reviewed-on: https://go-review.googlesource.com/126395 Run-TryBot: Iskander Sharipov <iskander.sharipov@intel.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by:
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Charles Kenney authored
Fixes #27406 Change-Id: I9c6f5bac5b26558fa7628233c74a62faf676e811 GitHub-Last-Rev: 29d19f719316b486224a15a50556465811985edf GitHub-Pull-Request: golang/go#27437 Reviewed-on: https://go-review.googlesource.com/132775Reviewed-by:
Emmanuel Odeke <emm.odeke@gmail.com> Run-TryBot: Emmanuel Odeke <emm.odeke@gmail.com> TryBot-Result: Gobot Gobot <gobot@golang.org>
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