- 26 Mar, 2018 4 commits
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Hana Kim authored
Move part of UserSpan event processing from cmd/trace.analyzeAnnotations to internal/trace.GoroutineStats that returns analyzed per-goroutine execution information. Now the execution information includes list of spans and their execution information. cmd/trace.analyzeAnnotations utilizes the span execution information from internal/trace.GoroutineStats and connects them with task information. Change-Id: Ib7f79a3ba652a4ae55cd81ea17565bcc7e241c5c Reviewed-on: https://go-review.googlesource.com/101917 Run-TryBot: Hyang-Ah Hana Kim <hyangah@gmail.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by:
Heschi Kreinick <heschi@google.com> Reviewed-by:
Peter Weinberger <pjw@google.com>
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Ilya Tocar authored
When lowering some ops on amd64 we generate additional NEGQ. This may result in code like this: NEGQ R12 NEGQ R12 Optimize it away. Gain is not significant, about ~0.5% gain in geomean in compress/flate and 200 bytes codesize reduction in go tool. Full results below: name old time/op new time/op delta Encode/Digits/Huffman/1e4-6 65.8µs ± 0% 65.7µs ± 0% -0.21% (p=0.010 n=10+9) Encode/Digits/Huffman/1e5-6 633µs ± 0% 632µs ± 0% ~ (p=0.370 n=8+9) Encode/Digits/Huffman/1e6-6 6.30ms ± 1% 6.29ms ± 1% ~ (p=0.796 n=10+10) Encode/Digits/Speed/1e4-6 281µs ± 0% 280µs ± 1% -0.34% (p=0.043 n=8+10) Encode/Digits/Speed/1e5-6 2.66ms ± 0% 2.66ms ± 0% -0.09% (p=0.043 n=10+10) Encode/Digits/Speed/1e6-6 26.3ms ± 0% 26.3ms ± 0% ~ (p=0.190 n=10+10) Encode/Digits/Default/1e4-6 554µs ± 0% 557µs ± 0% +0.46% (p=0.001 n=9+10) Encode/Digits/Default/1e5-6 8.63ms ± 1% 8.62ms ± 1% ~ (p=0.912 n=10+10) Encode/Digits/Default/1e6-6 92.7ms ± 1% 92.2ms ± 1% ~ (p=0.052 n=10+10) Encode/Digits/Compression/1e4-6 558µs ± 1% 557µs ± 1% ~ (p=0.481 n=10+10) Encode/Digits/Compression/1e5-6 8.58ms ± 0% 8.61ms ± 1% ~ (p=0.315 n=8+10) Encode/Digits/Compression/1e6-6 92.3ms ± 1% 92.4ms ± 1% ~ (p=0.971 n=10+10) Encode/Twain/Huffman/1e4-6 89.5µs ± 0% 89.0µs ± 1% -0.48% (p=0.001 n=9+9) Encode/Twain/Huffman/1e5-6 727µs ± 1% 728µs ± 0% ~ (p=0.604 n=10+9) Encode/Twain/Huffman/1e6-6 7.21ms ± 0% 7.19ms ± 1% ~ (p=0.696 n=8+10) Encode/Twain/Speed/1e4-6 320µs ± 1% 321µs ± 1% ~ (p=0.353 n=10+10) Encode/Twain/Speed/1e5-6 2.63ms ± 0% 2.62ms ± 1% -0.33% (p=0.016 n=8+10) Encode/Twain/Speed/1e6-6 25.8ms ± 0% 25.8ms ± 0% ~ (p=0.360 n=10+8) Encode/Twain/Default/1e4-6 677µs ± 1% 671µs ± 1% -0.88% (p=0.000 n=10+10) Encode/Twain/Default/1e5-6 10.5ms ± 1% 10.3ms ± 0% -2.06% (p=0.000 n=10+10) Encode/Twain/Default/1e6-6 113ms ± 1% 111ms ± 1% -1.96% (p=0.000 n=10+9) Encode/Twain/Compression/1e4-6 688µs ± 0% 679µs ± 1% -1.30% (p=0.000 n=7+10) Encode/Twain/Compression/1e5-6 11.6ms ± 1% 11.3ms ± 1% -2.10% (p=0.000 n=10+10) Encode/Twain/Compression/1e6-6 126ms ± 1% 124ms ± 0% -1.57% (p=0.000 n=10+10) [Geo mean] 3.45ms 3.44ms -0.46% name old speed new speed delta Encode/Digits/Huffman/1e4-6 152MB/s ± 0% 152MB/s ± 0% +0.21% (p=0.009 n=10+9) Encode/Digits/Huffman/1e5-6 158MB/s ± 0% 158MB/s ± 0% ~ (p=0.336 n=8+9) Encode/Digits/Huffman/1e6-6 159MB/s ± 1% 159MB/s ± 1% ~ (p=0.781 n=10+10) Encode/Digits/Speed/1e4-6 35.6MB/s ± 0% 35.7MB/s ± 1% +0.34% (p=0.020 n=8+10) Encode/Digits/Speed/1e5-6 37.6MB/s ± 0% 37.7MB/s ± 0% +0.09% (p=0.049 n=10+10) Encode/Digits/Speed/1e6-6 38.0MB/s ± 0% 38.0MB/s ± 0% ~ (p=0.146 n=10+10) Encode/Digits/Default/1e4-6 18.0MB/s ± 0% 18.0MB/s ± 0% -0.45% (p=0.002 n=9+10) Encode/Digits/Default/1e5-6 11.6MB/s ± 1% 11.6MB/s ± 1% ~ (p=0.644 n=10+10) Encode/Digits/Default/1e6-6 10.8MB/s ± 1% 10.8MB/s ± 1% +0.51% (p=0.044 n=10+10) Encode/Digits/Compression/1e4-6 17.9MB/s ± 1% 17.9MB/s ± 1% ~ (p=0.468 n=10+10) Encode/Digits/Compression/1e5-6 11.7MB/s ± 0% 11.6MB/s ± 1% ~ (p=0.322 n=8+10) Encode/Digits/Compression/1e6-6 10.8MB/s ± 1% 10.8MB/s ± 1% ~ (p=0.983 n=10+10) Encode/Twain/Huffman/1e4-6 112MB/s ± 0% 112MB/s ± 1% +0.42% (p=0.002 n=8+9) Encode/Twain/Huffman/1e5-6 138MB/s ± 1% 137MB/s ± 0% ~ (p=0.616 n=10+9) Encode/Twain/Huffman/1e6-6 139MB/s ± 0% 139MB/s ± 1% ~ (p=0.652 n=8+10) Encode/Twain/Speed/1e4-6 31.3MB/s ± 1% 31.2MB/s ± 1% ~ (p=0.342 n=10+10) Encode/Twain/Speed/1e5-6 38.0MB/s ± 0% 38.1MB/s ± 1% +0.33% (p=0.011 n=8+10) Encode/Twain/Speed/1e6-6 38.8MB/s ± 0% 38.7MB/s ± 0% ~ (p=0.325 n=10+8) Encode/Twain/Default/1e4-6 14.8MB/s ± 1% 14.9MB/s ± 1% +0.88% (p=0.000 n=10+10) Encode/Twain/Default/1e5-6 9.48MB/s ± 1% 9.68MB/s ± 0% +2.11% (p=0.000 n=10+10) Encode/Twain/Default/1e6-6 8.86MB/s ± 1% 9.03MB/s ± 1% +1.97% (p=0.000 n=10+9) Encode/Twain/Compression/1e4-6 14.5MB/s ± 0% 14.7MB/s ± 1% +1.31% (p=0.000 n=7+10) Encode/Twain/Compression/1e5-6 8.63MB/s ± 1% 8.82MB/s ± 1% +2.17% (p=0.000 n=10+10) Encode/Twain/Compression/1e6-6 7.92MB/s ± 1% 8.05MB/s ± 1% +1.59% (p=0.000 n=10+10) [Geo mean] 29.0MB/s 29.1MB/s +0.47% // symSizeComp `which go` go_old: section differences: global text (code) = 203 bytes (0.005131%) read-only data = 1 bytes (0.000057%) Total difference 204 bytes (0.003297%) Change-Id: Ie2cdfa1216472d78694fff44d215b3b8e71cf7bf Reviewed-on: https://go-review.googlesource.com/102277 Run-TryBot: Ilya Tocar <ilya.tocar@intel.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by:
Keith Randall <khr@golang.org>
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Hana (Hyang-Ah) Kim authored
- Summary: also includes links to pprof data. - Sortable table: sorting is done on server-side. The intention is that later, I want to add pagination feature and limit the page size the browser has to handle. - Stacked horizontal bar graph to present total time breakdown. - Human-friendly time representation. - No dependency on external fancy javascript libraries to allow it to function without an internet connection. Change-Id: I91e5c26746e59ad0329dfb61e096e11f768c7b73 Reviewed-on: https://go-review.googlesource.com/102156 Run-TryBot: Hyang-Ah Hana Kim <hyangah@gmail.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by:
Andrew Bonventre <andybons@golang.org> Reviewed-by:
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Alex Brainman authored
CL 102456 added Lstat check to TestDevNullFile. But some systems have /dev/null as a symlink, so Lstat test is wrong. Remove the test. Fixes #24521 Change-Id: I149110b08dd05db6495ec4eccbcf943e444332f9 Reviewed-on: https://go-review.googlesource.com/102461 Run-TryBot: Alex Brainman <alex.brainman@gmail.com> Reviewed-by:
Tobias Klauser <tobias.klauser@gmail.com> TryBot-Result: Gobot Gobot <gobot@golang.org>
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- 25 Mar, 2018 6 commits
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Alberto Donizetti authored
Compilebench: name old time/op new time/op delta Template 283ms ± 3% 281ms ± 4% ~ (p=0.242 n=20+20) Unicode 137ms ± 6% 135ms ± 6% ~ (p=0.194 n=20+19) GoTypes 890ms ± 2% 883ms ± 1% -0.74% (p=0.001 n=19+19) Compiler 4.21s ± 2% 4.20s ± 2% -0.40% (p=0.033 n=20+19) SSA 9.86s ± 2% 9.68s ± 1% -1.80% (p=0.000 n=20+19) Flate 185ms ± 5% 185ms ± 7% ~ (p=0.429 n=20+20) GoParser 222ms ± 3% 222ms ± 4% ~ (p=0.588 n=19+20) Reflect 572ms ± 2% 570ms ± 3% ~ (p=0.113 n=19+20) Tar 263ms ± 4% 259ms ± 2% -1.41% (p=0.013 n=20+20) XML 321ms ± 2% 321ms ± 4% ~ (p=0.835 n=20+19) name old user-time/op new user-time/op delta Template 400ms ± 5% 405ms ± 5% ~ (p=0.096 n=20+20) Unicode 217ms ± 8% 213ms ± 8% ~ (p=0.242 n=20+20) GoTypes 1.23s ± 3% 1.22s ± 3% ~ (p=0.923 n=19+20) Compiler 5.76s ± 6% 5.81s ± 2% ~ (p=0.687 n=20+19) SSA 14.2s ± 4% 14.0s ± 4% ~ (p=0.121 n=20+20) Flate 248ms ± 7% 251ms ±10% ~ (p=0.369 n=20+20) GoParser 308ms ± 5% 305ms ± 6% ~ (p=0.336 n=19+20) Reflect 771ms ± 2% 766ms ± 2% ~ (p=0.113 n=20+19) Tar 370ms ± 5% 362ms ± 7% -2.06% (p=0.036 n=19+20) XML 435ms ± 4% 432ms ± 5% ~ (p=0.369 n=20+20) name old alloc/op new alloc/op delta Template 39.5MB ± 0% 39.4MB ± 0% -0.20% (p=0.000 n=20+20) Unicode 29.1MB ± 0% 29.1MB ± 0% ~ (p=0.064 n=20+20) GoTypes 117MB ± 0% 117MB ± 0% -0.17% (p=0.000 n=20+20) Compiler 503MB ± 0% 502MB ± 0% -0.15% (p=0.000 n=19+19) SSA 1.42GB ± 0% 1.42GB ± 0% -0.16% (p=0.000 n=20+20) Flate 25.3MB ± 0% 25.3MB ± 0% -0.19% (p=0.000 n=20+20) GoParser 31.4MB ± 0% 31.3MB ± 0% -0.14% (p=0.000 n=20+18) Reflect 78.1MB ± 0% 77.9MB ± 0% -0.34% (p=0.000 n=20+19) Tar 40.1MB ± 0% 40.0MB ± 0% -0.17% (p=0.000 n=20+20) XML 45.3MB ± 0% 45.2MB ± 0% -0.13% (p=0.000 n=20+20) name old allocs/op new allocs/op delta Template 393k ± 0% 392k ± 0% -0.21% (p=0.000 n=20+19) Unicode 337k ± 0% 337k ± 0% -0.02% (p=0.000 n=20+20) GoTypes 1.22M ± 0% 1.22M ± 0% -0.21% (p=0.000 n=20+20) Compiler 4.77M ± 0% 4.76M ± 0% -0.16% (p=0.000 n=20+20) SSA 11.8M ± 0% 11.8M ± 0% -0.12% (p=0.000 n=20+20) Flate 242k ± 0% 241k ± 0% -0.20% (p=0.000 n=20+20) GoParser 324k ± 0% 324k ± 0% -0.14% (p=0.000 n=20+20) Reflect 985k ± 0% 981k ± 0% -0.38% (p=0.000 n=20+20) Tar 403k ± 0% 402k ± 0% -0.19% (p=0.000 n=20+20) XML 424k ± 0% 424k ± 0% -0.16% (p=0.000 n=19+20) Change-Id: I131e382b64cd6db11a9263a477d45d80c180c499 Reviewed-on: https://go-review.googlesource.com/102421 Run-TryBot: Alberto Donizetti <alb.donizetti@gmail.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by:
Brad Fitzpatrick <bradfitz@golang.org>
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Agniva De Sarker authored
RFC 8081 declares a top level font media type for all types of fonts. Updating the mime types in sniffer to reflect the new changes. Fixes #24524 Change-Id: Iba6cef4c5974e9930e14705720d42550ee87ba56 Reviewed-on: https://go-review.googlesource.com/102458 Run-TryBot: Brad Fitzpatrick <bradfitz@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by:
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Alex Brainman authored
Also add more tests to test both nul and NUL on windows. Fixes #24482 Change-Id: I3dfe68ec8de7f90ca869c1096dde0054df3c5cf6 Reviewed-on: https://go-review.googlesource.com/102457Reviewed-by:
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Josh Bleecher Snyder authored
The build dashboard is dotted with net test failures. We cannot declare all builders to have flaky networks, although all fundamentally do. Instead, add a simple retry/backoff loop to the ones that show up most commonly on the dashboard at this moment. If this approach works well in practice, we can incrementally apply it to other flaky net tests. Change-Id: I69c1ca6ce5b347ad549c7eb18d0438373f6e2489 Reviewed-on: https://go-review.googlesource.com/102397 Run-TryBot: Josh Bleecher Snyder <josharian@gmail.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by:
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Kevin Burke authored
This aims to expand the coverage of examples showing how the sql package works, as well as to address a number of issues I've observed while explaining how the database package works: - The best way to issue UPDATE or INSERT queries, that don't need to scan anything in return. (Previously, we had no examples for any Execute statement). - How to use prepared statements and transactions. - How to aggregate arguments from a Query/QueryContext query into a slice. Furthermore just having examples in more places should help, as users click on e.g. the "Rows" return parameter and are treated with the lack of any example about how Rows is used. Switch package examples to use QueryContext/QueryRowContext; I think it is a good practice to prepare users to issue queries with a timeout attached, even if they are not using it immediately. Change-Id: I4e63af91c7e4fff88b25f820906104ecefde4cc3 Reviewed-on: https://go-review.googlesource.com/91015Reviewed-by:
Daniel Theophanes <kardianos@gmail.com> Run-TryBot: Daniel Theophanes <kardianos@gmail.com> TryBot-Result: Gobot Gobot <gobot@golang.org>
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Alex Brainman authored
DevNull is documented on darwin, dragonfly, freebsd, linux, nacl, netbsd, openbsd, solaris and plan9, but not on windows. Add missing documentation. Change-Id: Icdbded0dd5e322ed4360cbce6bee4cdca5cfbe72 Reviewed-on: https://go-review.googlesource.com/102456 Run-TryBot: Alex Brainman <alex.brainman@gmail.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by:
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- 24 Mar, 2018 12 commits
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Daniel Martí authored
As found by unparam. Picked the low-hanging fruit, consisting only of errors that were always nil and results that were never used. Left out those that were useful for consistency with other func signatures. Change-Id: I06b52bbd3541f8a5d66659c909bd93cb3e172018 Reviewed-on: https://go-review.googlesource.com/102418 Run-TryBot: Daniel Martí <mvdan@mvdan.cc> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by:
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Daniel Martí authored
Remove a couple of unnecessary var declarations, an unused sort.Sort type, and simplify a range by using the two-name variant. Change-Id: Ia251f634db0bfbe8b1d553b8659272ddbd13b2c3 Reviewed-on: https://go-review.googlesource.com/102336 Run-TryBot: Daniel Martí <mvdan@mvdan.cc> Reviewed-by:
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Agniva De Sarker authored
Sniffing woff2 is now added to the spec - https://github.com/whatwg/mimesniff/commit/e29b9f4a22843bf6c7f0177223b0147bc03e37f7 Change-Id: Ie63744454d0ee54ed0f985c2873d7eb20a14015a Reviewed-on: https://go-review.googlesource.com/102455Reviewed-by:
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Daniel Nephin authored
Change-Id: I906e61170279f0647598e2fd4fa931aac1b69288 GitHub-Last-Rev: f6df43e8e10e3b032a67490611c0ba5ad8e948df GitHub-Pull-Request: golang/go#24517 Reviewed-on: https://go-review.googlesource.com/102396Reviewed-by:
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Alberto Donizetti authored
And delete them from asm_test. Change-Id: I34fcf85ae8ce09cd146fe4ce6a0ae7616bd97e2d Reviewed-on: https://go-review.googlesource.com/102296 Run-TryBot: Alberto Donizetti <alb.donizetti@gmail.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by:
Giovanni Bajo <rasky@develer.com>
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Tobias Klauser authored
As pointed out by Josh Bleecher Snyder in CL 99780. The check is for GOARM > 6, so suggest to recompile with either GOARM=5 or GOARM=6. Change-Id: I6a97e87bdc17aa3932f5c8cb598bba85c3cf4be9 Reviewed-on: https://go-review.googlesource.com/101936 Run-TryBot: Tobias Klauser <tobias.klauser@gmail.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by:
Josh Bleecher Snyder <josharian@gmail.com>
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Giovanni Bajo authored
Sometimes, we can end up calling update with a self-relation about a variable (x REL x). In this case, there is no need to record anything: the relation is unsatisfiable if and only if it doesn't contain eq. This also helps avoiding infinite loop in next CL that will introduce transitive closure of relations. Passes toolstash -cmp. Change-Id: Ic408452ec1c13653f22ada35466ec98bc14aaa8e Reviewed-on: https://go-review.googlesource.com/100276Reviewed-by:
Austin Clements <austin@google.com>
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Giovanni Bajo authored
When an unsatisfiable relation is recorded in the facts table, there is no need to compute further relations or updates additional data structures. Since we're about to transitively propagate relations, make sure to fail as fast as possible to avoid doing useless work in dead branches. Passes toolstash -cmp. Change-Id: I23eed376d62776824c33088163c7ac9620abce85 Reviewed-on: https://go-review.googlesource.com/100275Reviewed-by:
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Giovanni Bajo authored
This patch completes implementation of BT(Q|L), and adds support for BT(S|R|C)(Q|L). Example of code changes from time.(*Time).addSec: if t.wall&hasMonotonic != 0 { 0x1073465 488b08 MOVQ 0(AX), CX 0x1073468 4889ca MOVQ CX, DX 0x107346b 48c1e93f SHRQ $0x3f, CX 0x107346f 48c1e13f SHLQ $0x3f, CX 0x1073473 48f7c1ffffffff TESTQ $-0x1, CX 0x107347a 746b JE 0x10734e7 if t.wall&hasMonotonic != 0 { 0x1073435 488b08 MOVQ 0(AX), CX 0x1073438 480fbae13f BTQ $0x3f, CX 0x107343d 7363 JAE 0x10734a2 Another example: t.wall = t.wall&nsecMask | uint64(dsec)<<nsecShift | hasMonotonic 0x10734c8 4881e1ffffff3f ANDQ $0x3fffffff, CX 0x10734cf 48c1e61e SHLQ $0x1e, SI 0x10734d3 4809ce ORQ CX, SI 0x10734d6 48b90000000000000080 MOVQ $0x8000000000000000, CX 0x10734e0 4809f1 ORQ SI, CX 0x10734e3 488908 MOVQ CX, 0(AX) t.wall = t.wall&nsecMask | uint64(dsec)<<nsecShift | hasMonotonic 0x107348b 4881e2ffffff3f ANDQ $0x3fffffff, DX 0x1073492 48c1e61e SHLQ $0x1e, SI 0x1073496 4809f2 ORQ SI, DX 0x1073499 480fbaea3f BTSQ $0x3f, DX 0x107349e 488910 MOVQ DX, 0(AX) Go1 benchmarks seem unaffected, and I would be surprised otherwise: name old time/op new time/op delta BinaryTree17-4 2.64s ± 4% 2.56s ± 9% -2.92% (p=0.008 n=9+9) Fannkuch11-4 2.90s ± 1% 2.95s ± 3% +1.76% (p=0.010 n=10+9) FmtFprintfEmpty-4 35.3ns ± 1% 34.5ns ± 2% -2.34% (p=0.004 n=9+8) FmtFprintfString-4 57.0ns ± 1% 58.4ns ± 5% +2.52% (p=0.029 n=9+10) FmtFprintfInt-4 59.8ns ± 3% 59.8ns ± 6% ~ (p=0.565 n=10+10) FmtFprintfIntInt-4 93.9ns ± 3% 91.2ns ± 5% -2.94% (p=0.014 n=10+9) FmtFprintfPrefixedInt-4 107ns ± 6% 104ns ± 6% ~ (p=0.099 n=10+10) FmtFprintfFloat-4 187ns ± 3% 188ns ± 3% ~ (p=0.505 n=10+9) FmtManyArgs-4 410ns ± 1% 415ns ± 6% ~ (p=0.649 n=8+10) GobDecode-4 5.30ms ± 3% 5.27ms ± 3% ~ (p=0.436 n=10+10) GobEncode-4 4.62ms ± 5% 4.47ms ± 2% -3.24% (p=0.001 n=9+10) Gzip-4 197ms ± 4% 193ms ± 3% ~ (p=0.123 n=10+10) Gunzip-4 30.4ms ± 3% 30.1ms ± 3% ~ (p=0.481 n=10+10) HTTPClientServer-4 76.3µs ± 1% 76.0µs ± 1% ~ (p=0.236 n=8+9) JSONEncode-4 10.5ms ± 9% 10.3ms ± 3% ~ (p=0.280 n=10+10) JSONDecode-4 42.3ms ±10% 41.3ms ± 2% ~ (p=0.053 n=9+10) Mandelbrot200-4 3.80ms ± 2% 3.72ms ± 2% -2.15% (p=0.001 n=9+10) GoParse-4 2.88ms ±10% 2.81ms ± 2% ~ (p=0.247 n=10+10) RegexpMatchEasy0_32-4 69.5ns ± 4% 68.6ns ± 2% ~ (p=0.171 n=10+10) RegexpMatchEasy0_1K-4 165ns ± 3% 162ns ± 3% ~ (p=0.137 n=10+10) RegexpMatchEasy1_32-4 65.7ns ± 6% 64.4ns ± 2% -2.02% (p=0.037 n=10+10) RegexpMatchEasy1_1K-4 278ns ± 2% 279ns ± 3% ~ (p=0.991 n=8+9) RegexpMatchMedium_32-4 99.3ns ± 3% 98.5ns ± 4% ~ (p=0.457 n=10+9) RegexpMatchMedium_1K-4 30.1µs ± 1% 30.4µs ± 2% ~ (p=0.173 n=8+10) RegexpMatchHard_32-4 1.40µs ± 2% 1.41µs ± 4% ~ (p=0.565 n=10+10) RegexpMatchHard_1K-4 42.5µs ± 1% 41.5µs ± 3% -2.13% (p=0.002 n=8+9) Revcomp-4 332ms ± 4% 328ms ± 5% ~ (p=0.720 n=9+10) Template-4 48.3ms ± 2% 49.6ms ± 3% +2.56% (p=0.002 n=8+10) TimeParse-4 252ns ± 2% 249ns ± 3% ~ (p=0.116 n=9+10) TimeFormat-4 262ns ± 4% 252ns ± 3% -4.01% (p=0.000 n=9+10) name old speed new speed delta GobDecode-4 145MB/s ± 3% 146MB/s ± 3% ~ (p=0.436 n=10+10) GobEncode-4 166MB/s ± 5% 172MB/s ± 2% +3.28% (p=0.001 n=9+10) Gzip-4 98.6MB/s ± 4% 100.4MB/s ± 3% ~ (p=0.123 n=10+10) Gunzip-4 639MB/s ± 3% 645MB/s ± 3% ~ (p=0.481 n=10+10) JSONEncode-4 185MB/s ± 8% 189MB/s ± 3% ~ (p=0.280 n=10+10) JSONDecode-4 46.0MB/s ± 9% 47.0MB/s ± 2% +2.21% (p=0.046 n=9+10) GoParse-4 20.1MB/s ± 9% 20.6MB/s ± 2% ~ (p=0.239 n=10+10) RegexpMatchEasy0_32-4 460MB/s ± 4% 467MB/s ± 2% ~ (p=0.165 n=10+10) RegexpMatchEasy0_1K-4 6.19GB/s ± 3% 6.28GB/s ± 3% ~ (p=0.165 n=10+10) RegexpMatchEasy1_32-4 487MB/s ± 5% 497MB/s ± 2% +2.00% (p=0.043 n=10+10) RegexpMatchEasy1_1K-4 3.67GB/s ± 2% 3.67GB/s ± 3% ~ (p=0.963 n=8+9) RegexpMatchMedium_32-4 10.1MB/s ± 3% 10.1MB/s ± 4% ~ (p=0.435 n=10+9) RegexpMatchMedium_1K-4 34.0MB/s ± 1% 33.7MB/s ± 2% ~ (p=0.173 n=8+10) RegexpMatchHard_32-4 22.9MB/s ± 2% 22.7MB/s ± 4% ~ (p=0.565 n=10+10) RegexpMatchHard_1K-4 24.0MB/s ± 3% 24.7MB/s ± 3% +2.64% (p=0.001 n=9+9) Revcomp-4 766MB/s ± 4% 775MB/s ± 5% ~ (p=0.720 n=9+10) Template-4 40.2MB/s ± 2% 39.2MB/s ± 3% -2.47% (p=0.002 n=8+10) The rules match ~1800 times during all.bash. Fixes #18943 Change-Id: I64be1ada34e89c486dfd935bf429b35652117ed4 Reviewed-on: https://go-review.googlesource.com/94766 Run-TryBot: Giovanni Bajo <rasky@develer.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: -
isharipo authored
The ssa.Func has Type field that is described as function signature type. It never gets any value and remains nil. This leads to "<T>" signature printed representation. Given this function declaration: func foo(x int, f func() string) (int, error) GOSSAFUNC printed it as below: compiling foo foo <T> After this change: compiling foo foo func(int, func() string) (int, error) Change-Id: Iec5eec8aac5c76ff184659e30f41b2f5fe86d329 Reviewed-on: https://go-review.googlesource.com/102375 Run-TryBot: Iskander Sharipov <iskander.sharipov@intel.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by:
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Matthew Dempsky authored
By always writing out pack files, the object file format can be simplified somewhat. In particular, the export data format will no longer require escaping, because the pack file provides appropriate framing. This CL does not affect build systems that use -pack, which includes all major Go build systems (cmd/go, gb, bazel). Also, existing package import logic already distinguishes pack/object files based on file contents rather than file extension. The only exception is cmd/pack, which specially handled object files created by cmd/compile when used with the 'c' mode. This mode is extended to now recognize the pack files produced by cmd/compile and handle them as before. Passes toolstash-check. Updates #21705. Updates #24512. Change-Id: Idf131013bfebd73a5cde7e087eb19964503a9422 Reviewed-on: https://go-review.googlesource.com/102236 Run-TryBot: Matthew Dempsky <mdempsky@google.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by:
Ian Lance Taylor <iant@golang.org>
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Matthew Dempsky authored
The __.PKGDEF file is a compiler object file only intended for other compilers. Also, for build systems that use -linkobj, all of the information it contains is present within the linker object files already, so look for it there instead. This requires a little bit of code reorganization. Significantly, previously when loading an archive file, the __.PKGDEF file was authoritative on whether the package was "main" and/or "safe". Now that we're using the Go object files instead, there's the issue that there can be multiple Go object files in an archive (because when using assembly, each assembly file becomes its own additional object file). The solution taken here is to check if any object file within the package declares itself as "main" and/or "safe". Updates #24512. Change-Id: I70243a293bdf34b8555c0bf1833f8933b2809449 Reviewed-on: https://go-review.googlesource.com/102281 Run-TryBot: Matthew Dempsky <mdempsky@google.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by:
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- 23 Mar, 2018 5 commits
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Matthew Dempsky authored
This is currently always the case because loadobjfile complains if it's not, but that will be changed soon. Updates #24512. Change-Id: I262daca765932a0f4cea3fcc1cc80ca90de07a59 Reviewed-on: https://go-review.googlesource.com/102280 Run-TryBot: Matthew Dempsky <mdempsky@google.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by:
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Yuval Pavel Zholkover authored
AT_HWCAP is not available on FreeBSD-11.1-RELEASE or earlier and the wrong const was used. Use the correct value, and initialize hwcap with ^uint32(0) inorder not to fail the VFP tests. Fixes #24507. Change-Id: I5c3eed57bb53bf992b7de0eec88ea959806306b9 Reviewed-on: https://go-review.googlesource.com/102355Reviewed-by:
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Michael Munday authored
The compiler can't currently figure out that it can eliminate both c.s loads (using store to load forwarding) in the second line of the following code: ... c.s[i], c.s[j] = c.s[j], c.s[i] x := c.s[j] + c.s[i] ... The compiler eliminates the second load of c.s[j] (using the original value of c.s[i]), however the load of c.s[i] remains because the compiler doesn't know that c.s[i] and c.s[j] either overlap completely or not at all. Introducing temporaries to make this explicit improves the performance of the generic code slightly, the goal being to remove the assembly in this package in the future. This change also hoists a bounds check out of the main loop which gives a slight performance boost and also makes the behaviour identical to the assembly implementation when len(dst) < len(src). name old speed new speed delta RC4_128-4 491MB/s ± 3% 596MB/s ± 5% +21.51% (p=0.000 n=9+9) RC4_1K-4 504MB/s ± 2% 616MB/s ± 1% +22.33% (p=0.000 n=10+10) RC4_8K-4 509MB/s ± 1% 630MB/s ± 2% +23.85% (p=0.000 n=8+9) Change-Id: I27adc775713b2e74a1a94e0c1de0909fb4379463 Reviewed-on: https://go-review.googlesource.com/102335 Run-TryBot: Michael Munday <mike.munday@ibm.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by:
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Hyang-Ah Hana Kim authored
This reverts commit c6e69ec7. Reason for revert: Broke builders. #24508 Change-Id: I66abff0dd14ec6e1f8d8d982ccfb0438633b639d Reviewed-on: https://go-review.googlesource.com/102316Reviewed-by:
Hyang-Ah Hana Kim <hyangah@gmail.com>
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Hana (Hyang-Ah) Kim authored
Merges updates listed in https://github.com/google/pprof/compare/0e0e5b725...a74ae6f Update #24443 cmd/vendor/vendor.json was updated manually. Change-Id: I15d5fe82ac18263d4d54f5773cee0e197e93dd59 Reviewed-on: https://go-review.googlesource.com/101736Reviewed-by:
Alberto Donizetti <alb.donizetti@gmail.com>
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- 22 Mar, 2018 9 commits
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Matthew Dempsky authored
Change-Id: Ie30878199e24cce5b75428e6b602c017ebd16642 Reviewed-on: https://go-review.googlesource.com/102175 Run-TryBot: Matthew Dempsky <mdempsky@google.com> Reviewed-by:
Daniel Martí <mvdan@mvdan.cc>
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Adam Langley authored
I don't know if I got lost in the old PKCS documents, or whether this is a case where reality diverges from the spec, but OpenSSL clearly stuffs PKIX Extension objects in CSR attributues directly[1]. In either case, doing what OpenSSL does seems valid here and allows the critical flag in extensions to be serialised. Fixes #13739. [1] https://github.com/openssl/openssl/blob/e3713c365c2657236439fea00822a43aa396d112/crypto/x509/x509_req.c#L173 Change-Id: Ic1e73ba9bd383a357a2aa8fc4f6bd76811bbefcc Reviewed-on: https://go-review.googlesource.com/70851 Run-TryBot: Adam Langley <agl@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by:
Filippo Valsorda <filippo@golang.org>
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Mike Danese authored
This change implement keying material export as described in: https://tools.ietf.org/html/rfc5705 I verified the implementation against openssl s_client and openssl s_server. Change-Id: I4dcdd2fb929c63ab4e92054616beab6dae7b1c55 Signed-off-by:
Mike Danese <mikedanese@google.com> Reviewed-on: https://go-review.googlesource.com/85115 Run-TryBot: Adam Langley <agl@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by:
Adam Langley <agl@golang.org>
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Daniel Martí authored
Slightly simplifies the code. Made sure to exclude the cases that would change behavior, such as when the iterated value is a string, when the index is modified within the body, or when the slice is modified. Also checked that all the elements are of pointer type, to avoid the corner case where non-pointer types could be copied by mistake. Change-Id: Iea64feb2a9a6a4c94ada9ff3ace40ee173505849 Reviewed-on: https://go-review.googlesource.com/100557 Run-TryBot: Daniel Martí <mvdan@mvdan.cc> Reviewed-by:
Matthew Dempsky <mdempsky@google.com>
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Austin Clements authored
This experiment has gone stale. It causes a type-checking failure because the condition of the OIF produced by range loop lowering has type "untyped bool". Fix this by typechecking the whole OIF statement, not just its condition. This doesn't quite fix the whole experiment, but it gets further. Something about preemption point insertion is causing failures like "internal compiler error: likeliness prediction 1 for block b10 with 1 successors" in cmd/compile/internal/gc. Change-Id: I7d80d618d7c91c338bf5f2a8dc174d582a479df3 Reviewed-on: https://go-review.googlesource.com/102157 Run-TryBot: Austin Clements <austin@google.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by:
David Chase <drchase@google.com>
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Travis Bischel authored
Move currently uses mov instructions directly up to 31 bytes and then switches to duffcopy. Moving 31 bytes is 4 instructions corresponding to two loads and two stores, (or 6 if !useSSE) depending on the usage, duffcopy is five (one or two mov, two or three lea, one call). This adds direct mov instructions for Move's of size 32, 48, and 64 with sse and for only size 32 without. With useSSE: - 32 is 4 instructions (byte +/- comparison below) - 33 thru 48 is 6 - 49 thru 64 is 8 Without: - 32 is 8 Note that the only platform with useSSE set to false is plan 9. I have built three projects based off tip and tip with this patch and the project's byte size is equal to or less than they were prior. The basis of this change is that copying data with instructions directly is nearly free, whereas calling into duffcopy adds a bit of overhead. This is most noticeable in range statements where elements are 32+ bytes. For code with the following pattern: func Benchmark32Range(b *testing.B) { var f s32 for _, count := range []int{10, 100, 1000, 10000} { name := strconv.Itoa(count) b.Run(name, func(b *testing.B) { base := make([]s32, count) for i := 0; i < b.N; i++ { for _, v := range base { f = v } } }) } _ = f } These are the resulting benchmarks: Benchmark16Range/10-4 19.1 19.1 +0.00% Benchmark16Range/100-4 169 170 +0.59% Benchmark16Range/1000-4 1684 1691 +0.42% Benchmark16Range/10000-4 18147 18124 -0.13% Benchmark31Range/10-4 141 142 +0.71% Benchmark31Range/100-4 1407 1410 +0.21% Benchmark31Range/1000-4 14070 14074 +0.03% Benchmark31Range/10000-4 141781 141759 -0.02% Benchmark32Range/10-4 71.4 32.2 -54.90% Benchmark32Range/100-4 695 326 -53.09% Benchmark32Range/1000-4 7166 3313 -53.77% Benchmark32Range/10000-4 72571 35425 -51.19% Benchmark64Range/10-4 87.8 64.9 -26.08% Benchmark64Range/100-4 868 629 -27.53% Benchmark64Range/1000-4 9355 6907 -26.17% Benchmark64Range/10000-4 94463 70385 -25.49% Benchmark79Range/10-4 177 152 -14.12% Benchmark79Range/100-4 1769 1531 -13.45% Benchmark79Range/1000-4 17893 15532 -13.20% Benchmark79Range/10000-4 178947 155551 -13.07% Benchmark80Range/10-4 99.6 99.7 +0.10% Benchmark80Range/100-4 987 985 -0.20% Benchmark80Range/1000-4 10573 10560 -0.12% Benchmark80Range/10000-4 106792 106639 -0.14% For runtime's BenchCopyFat* benchmarks: CopyFat8-4 0.40ns ± 0% 0.40ns ± 0% ~ (all equal) CopyFat12-4 0.40ns ± 0% 0.80ns ± 0% +100.00% (p=0.000 n=9+9) CopyFat16-4 0.40ns ± 0% 0.80ns ± 0% +100.00% (p=0.000 n=10+8) CopyFat24-4 0.80ns ± 0% 0.40ns ± 0% -50.00% (p=0.001 n=8+9) CopyFat32-4 2.01ns ± 0% 0.40ns ± 0% -80.10% (p=0.000 n=8+8) CopyFat64-4 2.87ns ± 0% 0.40ns ± 0% -86.07% (p=0.000 n=8+10) CopyFat128-4 4.82ns ± 0% 4.82ns ± 0% ~ (p=1.000 n=8+8) CopyFat256-4 8.83ns ± 0% 8.83ns ± 0% ~ (p=1.000 n=8+8) CopyFat512-4 16.9ns ± 0% 16.9ns ± 0% ~ (all equal) CopyFat520-4 14.6ns ± 0% 14.6ns ± 1% ~ (p=0.529 n=8+9) CopyFat1024-4 32.9ns ± 0% 33.0ns ± 0% +0.20% (p=0.041 n=8+9) Function calls are not benefitted as much due how they are compiled, but other benchmarks I ran show that calling function with 64 byte elements is marginally improved. The main downside with this change is that it may increase binary sizes depending on the size of the copy, but this change also decreases binaries for moves of 48 bytes or less. For the following code: package main type size [32]byte //go:noinline func use(t size) { } //go:noinline func get() size { var z size return z } func main() { var a size use(a) } Changing size around gives the following assembly leading up to the call (the initialization and actual call are removed): tip func call with 32B arg: 27B 48 89 e7 mov %rsp,%rdi 48 8d 74 24 20 lea 0x20(%rsp),%rsi 48 89 6c 24 f0 mov %rbp,-0x10(%rsp) 48 8d 6c 24 f0 lea -0x10(%rsp),%rbp e8 53 ab ff ff callq 448964 <runtime.duffcopy+0x364> 48 8b 6d 00 mov 0x0(%rbp),%rbp modified: 19B (-8B) 0f 10 44 24 20 movups 0x20(%rsp),%xmm0 0f 11 04 24 movups %xmm0,(%rsp) 0f 10 44 24 30 movups 0x30(%rsp),%xmm0 0f 11 44 24 10 movups %xmm0,0x10(%rsp) - tip with 47B arg: 29B 48 8d 7c 24 0f lea 0xf(%rsp),%rdi 48 8d 74 24 40 lea 0x40(%rsp),%rsi 48 89 6c 24 f0 mov %rbp,-0x10(%rsp) 48 8d 6c 24 f0 lea -0x10(%rsp),%rbp e8 43 ab ff ff callq 448964 <runtime.duffcopy+0x364> 48 8b 6d 00 mov 0x0(%rbp),%rbp modified: 20B (-9B) 0f 10 44 24 40 movups 0x40(%rsp),%xmm0 0f 11 44 24 0f movups %xmm0,0xf(%rsp) 0f 10 44 24 50 movups 0x50(%rsp),%xmm0 0f 11 44 24 1f movups %xmm0,0x1f(%rsp) - tip with 64B arg: 27B 48 89 e7 mov %rsp,%rdi 48 8d 74 24 40 lea 0x40(%rsp),%rsi 48 89 6c 24 f0 mov %rbp,-0x10(%rsp) 48 8d 6c 24 f0 lea -0x10(%rsp),%rbp e8 1f ab ff ff callq 448948 <runtime.duffcopy+0x348> 48 8b 6d 00 mov 0x0(%rbp),%rbp modified: 39B [+12B] 0f 10 44 24 40 movups 0x40(%rsp),%xmm0 0f 11 04 24 movups %xmm0,(%rsp) 0f 10 44 24 50 movups 0x50(%rsp),%xmm0 0f 11 44 24 10 movups %xmm0,0x10(%rsp) 0f 10 44 24 60 movups 0x60(%rsp),%xmm0 0f 11 44 24 20 movups %xmm0,0x20(%rsp) 0f 10 44 24 70 movups 0x70(%rsp),%xmm0 0f 11 44 24 30 movups %xmm0,0x30(%rsp) - tip with 79B arg: 29B 48 8d 7c 24 0f lea 0xf(%rsp),%rdi 48 8d 74 24 60 lea 0x60(%rsp),%rsi 48 89 6c 24 f0 mov %rbp,-0x10(%rsp) 48 8d 6c 24 f0 lea -0x10(%rsp),%rbp e8 09 ab ff ff callq 448948 <runtime.duffcopy+0x348> 48 8b 6d 00 mov 0x0(%rbp),%rbp modified: 46B [+17B] 0f 10 44 24 60 movups 0x60(%rsp),%xmm0 0f 11 44 24 0f movups %xmm0,0xf(%rsp) 0f 10 44 24 70 movups 0x70(%rsp),%xmm0 0f 11 44 24 1f movups %xmm0,0x1f(%rsp) 0f 10 84 24 80 00 00 movups 0x80(%rsp),%xmm0 00 0f 11 44 24 2f movups %xmm0,0x2f(%rsp) 0f 10 84 24 90 00 00 movups 0x90(%rsp),%xmm0 00 0f 11 44 24 3f movups %xmm0,0x3f(%rsp) So, at best we save 9B, at worst we gain 17. I do not think that copying around 65+B sized types is common enough to bloat program sizes. Using bincmp on the go binary itself shows a zero byte difference; there are gains and losses all over. One of the largest gains in binary size comes from cmd/go/internal/cache.(*Cache).Get, which passes around a 64 byte sized type -- this is one of the cases I would expect to be benefitted by this change. I think that this marginal improvement in struct copying for 64 byte structs is worth it: most data structs / work items I use in my programs are small, but few are smaller than 32 bytes: with one slice, the budget is up. The 32 rule alone would allow another 16 bytes, the 48 and 64 rules allow another 32 and 48. Change-Id: I19a8f9190d5d41825091f17f268f4763bfc12a62 Reviewed-on: https://go-review.googlesource.com/100718Reviewed-by:Ilya Tocar <ilya.tocar@intel.com> Reviewed-by:
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Alberto Donizetti authored
And remove them from asm_test. Change-Id: I1ca29b40546d6de06f20bfd550ed8ff87f495454 Reviewed-on: https://go-review.googlesource.com/102115 Run-TryBot: Alberto Donizetti <alb.donizetti@gmail.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by:
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Carlos Eduardo Seo authored
cmd/compile/internal/ppc64, runtime internal/atomic, sync/atomic: implement faster atomics for ppc64x This change implements faster atomics for ppc64x based on the ISA 2.07B, Appendix B.2 recommendations, replacing SYNC/ISYNC by LWSYNC in some cases. Updates #21348 name old time/op new time/op delta Cond1-16 955ns 856ns -10.33% Cond2-16 2.38µs 2.03µs -14.59% Cond4-16 5.90µs 5.44µs -7.88% Cond8-16 12.1µs 11.1µs -8.42% Cond16-16 27.0µs 25.1µs -7.04% Cond32-16 59.1µs 55.5µs -6.14% LoadMostlyHits/*sync_test.DeepCopyMap-16 22.1ns 24.1ns +9.02% LoadMostlyHits/*sync_test.RWMutexMap-16 252ns 249ns -1.20% LoadMostlyHits/*sync.Map-16 16.2ns 16.3ns ~ LoadMostlyMisses/*sync_test.DeepCopyMap-16 22.3ns 22.6ns ~ LoadMostlyMisses/*sync_test.RWMutexMap-16 249ns 247ns -0.51% LoadMostlyMisses/*sync.Map-16 12.7ns 12.7ns ~ LoadOrStoreBalanced/*sync_test.RWMutexMap-16 1.27µs 1.17µs -7.54% LoadOrStoreBalanced/*sync.Map-16 1.12µs 1.10µs -2.35% LoadOrStoreUnique/*sync_test.RWMutexMap-16 1.75µs 1.68µs -3.84% LoadOrStoreUnique/*sync.Map-16 2.07µs 1.97µs -5.13% LoadOrStoreCollision/*sync_test.DeepCopyMap-16 15.8ns 15.9ns ~ LoadOrStoreCollision/*sync_test.RWMutexMap-16 496ns 424ns -14.48% LoadOrStoreCollision/*sync.Map-16 6.07ns 6.07ns ~ Range/*sync_test.DeepCopyMap-16 1.65µs 1.64µs ~ Range/*sync_test.RWMutexMap-16 278µs 288µs +3.75% Range/*sync.Map-16 2.00µs 2.01µs ~ AdversarialAlloc/*sync_test.DeepCopyMap-16 3.45µs 3.44µs ~ AdversarialAlloc/*sync_test.RWMutexMap-16 226ns 227ns ~ AdversarialAlloc/*sync.Map-16 1.09µs 1.07µs -2.36% AdversarialDelete/*sync_test.DeepCopyMap-16 553ns 550ns -0.57% AdversarialDelete/*sync_test.RWMutexMap-16 273ns 274ns ~ AdversarialDelete/*sync.Map-16 247ns 249ns ~ UncontendedSemaphore-16 79.0ns 65.5ns -17.11% ContendedSemaphore-16 112ns 97ns -13.77% MutexUncontended-16 3.34ns 2.51ns -24.69% Mutex-16 266ns 191ns -28.26% MutexSlack-16 226ns 159ns -29.55% MutexWork-16 377ns 338ns -10.14% MutexWorkSlack-16 335ns 308ns -8.20% MutexNoSpin-16 196ns 184ns -5.91% MutexSpin-16 710ns 666ns -6.21% Once-16 1.29ns 1.29ns ~ Pool-16 8.64ns 8.71ns ~ PoolOverflow-16 1.60µs 1.44µs -10.25% SemaUncontended-16 5.39ns 4.42ns -17.96% SemaSyntNonblock-16 539ns 483ns -10.42% SemaSyntBlock-16 413ns 354ns -14.20% SemaWorkNonblock-16 305ns 258ns -15.36% SemaWorkBlock-16 266ns 229ns -14.06% RWMutexUncontended-16 12.9ns 9.7ns -24.80% RWMutexWrite100-16 203ns 147ns -27.47% RWMutexWrite10-16 177ns 119ns -32.74% RWMutexWorkWrite100-16 435ns 403ns -7.39% RWMutexWorkWrite10-16 642ns 611ns -4.79% WaitGroupUncontended-16 4.67ns 3.70ns -20.92% WaitGroupAddDone-16 402ns 355ns -11.54% WaitGroupAddDoneWork-16 208ns 250ns +20.09% WaitGroupWait-16 1.21ns 1.21ns ~ WaitGroupWaitWork-16 5.91ns 5.87ns -0.81% WaitGroupActuallyWait-16 92.2ns 85.8ns -6.91% Updates #21348 Change-Id: Ibb9b271d11b308264103829e176c6d9fe8f867d3 Reviewed-on: https://go-review.googlesource.com/95175 Run-TryBot: Lynn Boger <laboger@linux.vnet.ibm.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by:
Lynn Boger <laboger@linux.vnet.ibm.com>
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Giovanni Bajo authored
I've reorganized the guide and rewritten large sections. The structure is now more clear and logical, and can be understood and navigated using the summary displayed at the top of the page (before, the summary was confusing because the guide contained H1s that were being ignored by the summary). Both the initial onboarding process and the Gerrit change submission process have been reworked to include a concise checklist of steps that can be read and understood in a few seconds, for people that don't want or need to bother with details. More in-depth descriptions have been moved into separate sections, one per each checklist step. This is by far the biggest improvement, as the previous approach of having to read several pages just to understand the requires steps was very scaring for beginners, in addition of being harder to navigate. GitHub pull requests have been integrated as a different way to submit a change, suggested for first time contributors. The review process has been described in more details, documenting the workflow and the used conventions. Most miscellanea have been moved into an "advanced topics" chapter. Paragraphs describing how to use git have been removed to simplify reading. This guide should focus on Go contribution, and not help users getting familiar with git, for which many guides are available. Change-Id: I6f4b76583c9878b230ba1d0225745a1708fad2e8 Reviewed-on: https://go-review.googlesource.com/93495Reviewed-by:
Rob Pike <r@golang.org>
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- 21 Mar, 2018 4 commits
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Ilya Tocar authored
Since compiler is now able to generate conditional moves, we can replace bit-tricks with simple if/else. This even results in slightly better performance: name old time/op new time/op delta DecodeDigits-6 13.4ms ± 4% 13.0ms ± 2% -2.63% (p=0.003 n=10+10) DecodeTwain-6 37.5ms ± 1% 36.3ms ± 1% -3.03% (p=0.000 n=10+9) DecodeRand-6 4.23ms ± 1% 4.07ms ± 1% -3.67% (p=0.000 n=10+9) name old speed new speed delta DecodeDigits-6 7.47MB/s ± 4% 7.67MB/s ± 2% +2.69% (p=0.002 n=10+10) DecodeTwain-6 10.4MB/s ± 1% 10.7MB/s ± 1% +3.25% (p=0.000 n=10+8) DecodeRand-6 3.87MB/s ± 1% 4.03MB/s ± 2% +4.08% (p=0.000 n=10+10) diff --git a/src/compress/bzip2/huffman.go b/src/compress/bzip2/huffman.go Change-Id: Ie96ef1a9e07013b07e78f22cdccd531f3341caca Reviewed-on: https://go-review.googlesource.com/102015 Run-TryBot: Ilya Tocar <ilya.tocar@intel.com> Reviewed-by:
Joe Tsai <joetsai@google.com> TryBot-Result: Gobot Gobot <gobot@golang.org>
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Tim Wright authored
Fixes #14327 Much of the code is based on the linux/amd64 code that implements these build modes, and code is shared where possible. Change-Id: Ia510f2023768c0edbc863aebc585929ec593b332 Reviewed-on: https://go-review.googlesource.com/93875 Run-TryBot: Ian Lance Taylor <iant@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by:
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isharipo authored
For each replacement, test case is added to new 386enc.s file with exception of EMMS, SYSENTER, MFENCE and LFENCE as they are already covered in amd64enc.s (same on amd64 and 386). The replacement became less obvious after go vet suggested changes Before: BYTE $0x0f; BYTE $0x7f; BYTE $0x44; BYTE $0x24; BYTE $0x08 Changed to MOVQ (this form is being tested): MOVQ M0, 8(SP) Refactored to FP-relative access (go vet advice): MOVQ M0, val+4(FP) Change-Id: I56b87cf3371b6ad81ad0cd9db2033aee407b5818 Reviewed-on: https://go-review.googlesource.com/101475 Run-TryBot: Iskander Sharipov <iskander.sharipov@intel.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by:
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Ross Light authored
Change-Id: If35e3faa738c5d7d72cf77d14b276690579180a1 Reviewed-on: https://go-review.googlesource.com/101921 Run-TryBot: Ross Light <light@google.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by:
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