- 27 Mar, 2018 17 commits
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Ian Lance Taylor authored
Fixes #24389 Fixes #24396 Change-Id: I37399528700e2a39d9523d7c41bdc929618eb095 Reviewed-on: https://go-review.googlesource.com/102619Reviewed-by:
Brad Fitzpatrick <bradfitz@golang.org>
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erifan01 authored
This CL implements Exp and Exp2 with arm64 assembly. By inlining Ldexp and using fused instructions(fmadd, fmsub, fnmsub), this CL helps to improve the performance of functions Exp, Exp2, Sinh, Cosh and Tanh. Benchmarks: name old time/op new time/op delta Cosh-8 138ns ± 0% 96ns ± 0% -30.72% (p=0.008 n=5+5) Exp-8 105ns ± 0% 58ns ± 0% -45.24% (p=0.000 n=5+4) Exp2-8 100ns ± 0% 57ns ± 0% -43.21% (p=0.008 n=5+5) Sinh-8 139ns ± 0% 102ns ± 0% -26.62% (p=0.008 n=5+5) Tanh-8 134ns ± 0% 100ns ± 0% -25.67% (p=0.008 n=5+5) Change-Id: I7483a3333062a1d3525cedf3de56db78d79031c6 Reviewed-on: https://go-review.googlesource.com/86615 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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Yuval Pavel Zholkover authored
Change-Id: Ib67a61d5b37af210ff15d60d72bd5238b9c2d0ca Reviewed-on: https://go-review.googlesource.com/94815 Run-TryBot: Cherry Zhang <cherryyz@google.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by:
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Ben Shi authored
1. STPW stores the lower 32-bit words of a pair of registers to memory. 2. LDPW loads two 32-bit words from memory, zero extends them to 64-bit, and then copies to a pair of registers. 3. LDPSW does the same as LDPW, except a sign extension. This CL implements those 3 instructions and adds test cases. Change-Id: Ied9834d8240240d23ce00e086b4ea456e1611f1a Reviewed-on: https://go-review.googlesource.com/99956 Run-TryBot: Cherry Zhang <cherryyz@google.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by:
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Hana Kim authored
Spans are represented using Async Event types of chrome trace viewer. According to the doc, the 'id' should be unique within category, scope. https://docs.google.com/document/d/1CvAClvFfyA5R-PhYUmn5OOQtYMH4h6I0nSsKchNAySU/preview#heading=h.jh64i9l3vwa1 Use the index in the task's span slice as the slice id, so it can be unique within the task. The scope is the task id which is unique. This fixes a visualization bug that caused incorrect or missing presentation of nested spans. Change-Id: If1537ee00247f71fa967abfe45569a9e7dbcdce7 Reviewed-on: https://go-review.googlesource.com/102697Reviewed-by:
Heschi Kreinick <heschi@google.com>
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Michael Munday authored
No need to sign extend input to Neg8 and Neg16. Change-Id: I7896c83c9cdf84a34098582351a4aabf61cd6fdd Reviewed-on: https://go-review.googlesource.com/102675 Run-TryBot: Michael Munday <mike.munday@ibm.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by:
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Matthew Dempsky authored
In expandmeth, we call expand1/expand0 to build a list of all candidate methods to promote, and then we use dotpath to prune down which names actually resolve to a promoted method and how. However, previously we still computed "followsptr" based on the expand1/expand0 traversal (which is depth-first), rather than dotpath (which is breadth-first). The result is that we could sometimes end up miscomputing whether a particular promoted method involves a pointer traversal, which could result in bad code generation for method trampolines. Fixes #24547. Change-Id: I57dc014466d81c165b05d78b98610dc3765b7a90 Reviewed-on: https://go-review.googlesource.com/102618Reviewed-by:
Robert Griesemer <gri@golang.org>
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Daniel Theophanes authored
Prevent queries from starting a goroutine if the context is not able to be canceled. Fixes #23879 Change-Id: I392047bd53d7f796219dd12ee11b07303658fdaf Reviewed-on: https://go-review.googlesource.com/102478 Run-TryBot: Daniel Theophanes <kardianos@gmail.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by:
Yasuhiro MATSUMOTO <mattn.jp@gmail.com> Reviewed-by:
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Alberto Donizetti authored
name old time/op new time/op delta Template 281ms ± 2% 282ms ± 3% ~ (p=0.428 n=19+20) Unicode 138ms ± 6% 138ms ± 7% ~ (p=0.813 n=19+20) GoTypes 901ms ± 2% 895ms ± 2% ~ (p=0.050 n=19+20) Compiler 4.25s ± 1% 4.23s ± 1% -0.31% (p=0.031 n=19+18) SSA 9.77s ± 1% 9.78s ± 1% ~ (p=0.512 n=20+20) Flate 187ms ± 3% 187ms ± 4% ~ (p=0.687 n=20+19) GoParser 224ms ± 4% 222ms ± 3% ~ (p=0.301 n=20+20) Reflect 576ms ± 2% 576ms ± 2% ~ (p=0.620 n=20+20) Tar 262ms ± 3% 263ms ± 3% ~ (p=0.599 n=19+18) XML 322ms ± 4% 322ms ± 2% ~ (p=0.512 n=20+20) name old user-time/op new user-time/op delta Template 403ms ± 3% 399ms ± 5% ~ (p=0.149 n=17+20) Unicode 217ms ±12% 217ms ± 9% ~ (p=0.883 n=20+20) GoTypes 1.24s ± 3% 1.24s ± 3% ~ (p=0.718 n=20+20) Compiler 5.90s ± 3% 5.84s ± 5% ~ (p=0.217 n=18+20) SSA 14.0s ± 6% 14.1s ± 5% ~ (p=0.235 n=19+20) Flate 253ms ± 6% 254ms ± 5% ~ (p=0.749 n=20+19) GoParser 309ms ± 7% 307ms ± 5% ~ (p=0.398 n=20+20) Reflect 772ms ± 3% 771ms ± 3% ~ (p=0.901 n=20+19) Tar 368ms ± 5% 369ms ± 8% ~ (p=0.429 n=20+20) XML 435ms ± 5% 434ms ± 5% ~ (p=0.841 n=20+20) name old alloc/op new alloc/op delta Template 39.0MB ± 0% 38.9MB ± 0% -0.21% (p=0.000 n=20+19) Unicode 29.0MB ± 0% 29.0MB ± 0% -0.03% (p=0.000 n=20+20) GoTypes 116MB ± 0% 115MB ± 0% -0.33% (p=0.000 n=20+20) Compiler 498MB ± 0% 496MB ± 0% -0.37% (p=0.000 n=19+20) SSA 1.41GB ± 0% 1.40GB ± 0% -0.24% (p=0.000 n=20+20) Flate 25.0MB ± 0% 25.0MB ± 0% -0.22% (p=0.000 n=20+19) GoParser 31.0MB ± 0% 30.9MB ± 0% -0.23% (p=0.000 n=20+17) Reflect 77.1MB ± 0% 77.0MB ± 0% -0.12% (p=0.000 n=20+20) Tar 39.7MB ± 0% 39.6MB ± 0% -0.17% (p=0.000 n=20+20) XML 44.9MB ± 0% 44.8MB ± 0% -0.29% (p=0.000 n=20+20) name old allocs/op new allocs/op delta Template 386k ± 0% 385k ± 0% -0.28% (p=0.000 n=20+20) Unicode 337k ± 0% 336k ± 0% -0.07% (p=0.000 n=20+20) GoTypes 1.20M ± 0% 1.20M ± 0% -0.41% (p=0.000 n=20+20) Compiler 4.71M ± 0% 4.68M ± 0% -0.52% (p=0.000 n=20+20) SSA 11.7M ± 0% 11.6M ± 0% -0.31% (p=0.000 n=20+19) Flate 238k ± 0% 237k ± 0% -0.28% (p=0.000 n=18+20) GoParser 320k ± 0% 319k ± 0% -0.34% (p=0.000 n=20+19) Reflect 961k ± 0% 959k ± 0% -0.12% (p=0.000 n=20+20) Tar 397k ± 0% 396k ± 0% -0.23% (p=0.000 n=20+20) XML 419k ± 0% 417k ± 0% -0.39% (p=0.000 n=20+19) Change-Id: Ic7ec3614808d9892c1cab3991b996b7a3b8eff21 Reviewed-on: https://go-review.googlesource.com/102676 Run-TryBot: Alberto Donizetti <alb.donizetti@gmail.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by:
Keith Randall <khr@golang.org>
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Tobias Klauser authored
Decode AT_PAGESZ to determine physPageSize on netbsd. Also rename vdso_none.go to auxv_none.go which matches its purpose more closely. Akin to CL 99780 which did the same for freebsd. Change-Id: Iea4322f861ff0f3515e9051585dbb442f024326b Reviewed-on: https://go-review.googlesource.com/102677 Run-TryBot: Tobias Klauser <tobias.klauser@gmail.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by:
Ian Lance Taylor <iant@golang.org>
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Carlos Eduardo Seo authored
This change adds a better implementation in asm for addVW/subVW for ppc64x, with speedups up to 3.11x. benchmark old ns/op new ns/op delta BenchmarkAddVW/1-16 6.87 5.71 -16.89% BenchmarkAddVW/2-16 7.72 5.94 -23.06% BenchmarkAddVW/3-16 8.74 6.56 -24.94% BenchmarkAddVW/4-16 9.66 7.26 -24.84% BenchmarkAddVW/5-16 10.8 7.26 -32.78% BenchmarkAddVW/10-16 17.4 9.97 -42.70% BenchmarkAddVW/100-16 164 56.0 -65.85% BenchmarkAddVW/1000-16 1638 524 -68.01% BenchmarkAddVW/10000-16 16421 5201 -68.33% BenchmarkAddVW/100000-16 165762 53324 -67.83% BenchmarkSubVW/1-16 6.76 5.62 -16.86% BenchmarkSubVW/2-16 7.69 6.02 -21.72% BenchmarkSubVW/3-16 8.85 6.61 -25.31% BenchmarkSubVW/4-16 10.0 7.34 -26.60% BenchmarkSubVW/5-16 11.3 7.33 -35.13% BenchmarkSubVW/10-16 19.5 18.7 -4.10% BenchmarkSubVW/100-16 153 55.9 -63.46% BenchmarkSubVW/1000-16 1502 519 -65.45% BenchmarkSubVW/10000-16 15005 5165 -65.58% BenchmarkSubVW/100000-16 150620 53124 -64.73% benchmark old MB/s new MB/s speedup BenchmarkAddVW/1-16 1165.12 1400.76 1.20x BenchmarkAddVW/2-16 2071.39 2693.25 1.30x BenchmarkAddVW/3-16 2744.72 3656.92 1.33x BenchmarkAddVW/4-16 3311.63 4407.34 1.33x BenchmarkAddVW/5-16 3700.52 5512.48 1.49x BenchmarkAddVW/10-16 4605.63 8026.37 1.74x BenchmarkAddVW/100-16 4856.15 14296.76 2.94x BenchmarkAddVW/1000-16 4883.96 15264.21 3.13x BenchmarkAddVW/10000-16 4871.52 15380.78 3.16x BenchmarkAddVW/100000-16 4826.17 15002.48 3.11x BenchmarkSubVW/1-16 1183.20 1423.03 1.20x BenchmarkSubVW/2-16 2081.92 2657.44 1.28x BenchmarkSubVW/3-16 2711.52 3632.30 1.34x BenchmarkSubVW/4-16 3198.30 4360.30 1.36x BenchmarkSubVW/5-16 3534.43 5460.40 1.54x BenchmarkSubVW/10-16 4106.34 4273.51 1.04x BenchmarkSubVW/100-16 5213.48 14306.32 2.74x BenchmarkSubVW/1000-16 5324.27 15391.21 2.89x BenchmarkSubVW/10000-16 5331.33 15486.57 2.90x BenchmarkSubVW/100000-16 5311.35 15059.01 2.84x Change-Id: Ibaa5b9b38d63fba8e01a9c327eb8bef1e6e908c1 Reviewed-on: https://go-review.googlesource.com/101975Reviewed-by:
Lynn Boger <laboger@linux.vnet.ibm.com>
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HaraldNordgren authored
This change prevents import errors from being printed multiple times. Creating a bare-bones package 'p' with only one file importing itself and running 'go build p', the current implementation gives this error message: can't load package: import cycle not allowed package p imports p import cycle not allowed package p imports p With this change we will show the message only once. Updates #23295 Change-Id: I653b34c1c06c279f3df514f12ec0b89745a7e64a Reviewed-on: https://go-review.googlesource.com/86535Reviewed-by:
Harald Nordgren <haraldnordgren@gmail.com> Reviewed-by:
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Meng Zhuo authored
Use the __vdso_clock_gettime fast path via the vDSO on linux/arm64 to speed up nanotime and walltime. This results in the following performance improvement for time.Now on Cavium ThunderX: name old time/op new time/op delta TimeNow 442ns ± 0% 163ns ± 0% -63.16% (p=0.000 n=10+10) And benchmarks on VDSO BenchmarkClockVDSOAndFallbackPaths/vDSO 10000000 166 ns/op BenchmarkClockVDSOAndFallbackPaths/Fallback 3000000 456 ns/op Change-Id: I326118c6dff865eaa0569fc45d1fc1ff95cb74f6 Reviewed-on: https://go-review.googlesource.com/99855 Run-TryBot: Tobias Klauser <tobias.klauser@gmail.com> Run-TryBot: Ian Lance Taylor <iant@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by:
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Alberto Donizetti authored
Instrumenting the compiler shows that, at the end of liveValues, the values of the workList's cap are distributed as: cap freq 1 0.006 2 0.002 4 0.237 8 0.272 16 0.254 32 0.141 64 0.062 128 0.02 256 0.005 512 0.001 1024 0.0 Since the initial workList slice allocation is always on the stack (as the variable does not escape), we can aggressively pre-allocate a big backing array at (almost) no cost. This will save several allocations in liveValues calls that end up having a large workList, with no performance penalties for calls that have a small workList. name old time/op new time/op delta Template 284ms ± 3% 282ms ± 3% ~ (p=0.201 n=20+20) Unicode 138ms ± 7% 138ms ± 7% ~ (p=0.718 n=20+20) GoTypes 905ms ± 2% 895ms ± 1% -1.10% (p=0.003 n=19+18) Compiler 4.26s ± 1% 4.25s ± 1% -0.38% (p=0.038 n=20+19) SSA 9.85s ± 2% 9.80s ± 1% ~ (p=0.061 n=20+19) Flate 187ms ± 6% 186ms ± 5% ~ (p=0.289 n=20+20) GoParser 227ms ± 3% 225ms ± 3% ~ (p=0.072 n=20+20) Reflect 578ms ± 2% 575ms ± 2% ~ (p=0.059 n=18+20) Tar 263ms ± 2% 265ms ± 3% ~ (p=0.224 n=19+20) XML 323ms ± 3% 325ms ± 2% ~ (p=0.127 n=20+20) name old user-time/op new user-time/op delta Template 406ms ± 6% 404ms ± 4% ~ (p=0.314 n=20+20) Unicode 220ms ± 6% 215ms ±11% ~ (p=0.077 n=18+20) GoTypes 1.25s ± 3% 1.24s ± 4% ~ (p=0.461 n=20+20) Compiler 5.95s ± 2% 5.84s ± 5% -1.93% (p=0.007 n=20+20) SSA 14.4s ± 4% 14.2s ± 4% ~ (p=0.108 n=20+20) Flate 257ms ± 6% 252ms ± 9% ~ (p=0.063 n=20+20) GoParser 317ms ± 5% 312ms ± 6% -1.85% (p=0.049 n=20+20) Reflect 779ms ± 2% 774ms ± 3% ~ (p=0.253 n=20+20) Tar 371ms ± 4% 374ms ± 4% ~ (p=0.327 n=20+20) XML 440ms ± 5% 442ms ± 5% ~ (p=0.678 n=20+20) name old alloc/op new alloc/op delta Template 39.4MB ± 0% 39.0MB ± 0% -0.96% (p=0.000 n=20+20) Unicode 29.1MB ± 0% 29.0MB ± 0% -0.13% (p=0.000 n=20+20) GoTypes 117MB ± 0% 116MB ± 0% -0.88% (p=0.000 n=20+20) Compiler 502MB ± 0% 498MB ± 0% -0.77% (p=0.000 n=19+20) SSA 1.42GB ± 0% 1.40GB ± 0% -0.80% (p=0.000 n=20+20) Flate 25.3MB ± 0% 25.0MB ± 0% -1.10% (p=0.000 n=20+19) GoParser 31.3MB ± 0% 31.0MB ± 0% -1.05% (p=0.000 n=20+20) Reflect 77.9MB ± 0% 77.1MB ± 0% -1.03% (p=0.000 n=20+20) Tar 40.0MB ± 0% 39.7MB ± 0% -0.80% (p=0.000 n=20+20) XML 45.2MB ± 0% 44.9MB ± 0% -0.72% (p=0.000 n=20+20) name old allocs/op new allocs/op delta Template 392k ± 0% 386k ± 0% -1.44% (p=0.000 n=20+20) Unicode 337k ± 0% 337k ± 0% -0.22% (p=0.000 n=20+20) GoTypes 1.22M ± 0% 1.20M ± 0% -1.33% (p=0.000 n=20+20) Compiler 4.76M ± 0% 4.71M ± 0% -1.12% (p=0.000 n=20+20) SSA 11.8M ± 0% 11.7M ± 0% -1.00% (p=0.000 n=20+20) Flate 241k ± 0% 238k ± 0% -1.49% (p=0.000 n=20+20) GoParser 324k ± 0% 320k ± 0% -1.17% (p=0.000 n=20+20) Reflect 981k ± 0% 961k ± 0% -2.11% (p=0.000 n=20+20) Tar 402k ± 0% 397k ± 0% -1.29% (p=0.000 n=20+20) XML 424k ± 0% 419k ± 0% -1.10% (p=0.000 n=19+20) Change-Id: If46667ae98eee2d47a615cad05e18df0629d8388 Reviewed-on: https://go-review.googlesource.com/102495 Run-TryBot: Alberto Donizetti <alb.donizetti@gmail.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by:
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Alberto Donizetti authored
No changes in the actual generated compiler code. Change-Id: I206a7bf7b60f70a73640119fc92974f79ed95a6b Reviewed-on: https://go-review.googlesource.com/102416 Run-TryBot: Alberto Donizetti <alb.donizetti@gmail.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by:
Daniel Martí <mvdan@mvdan.cc>
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David du Colombier authored
CL 102457 added TestDevNullFile. However, this test is failing on Plan 9, because it checks that /dev/null is a character device while there are no special files on Plan 9. We fix this issue by changing Stat to consider all files served by the console device (#c) as character devices. Fixes #24534. Change-Id: I1c60cdf25770358b908790b3fb71910fa914dec0 Reviewed-on: https://go-review.googlesource.com/102424 Run-TryBot: David du Colombier <0intro@gmail.com> Reviewed-by:
Alex Brainman <alex.brainman@gmail.com> Reviewed-by:
Rob Pike <r@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org>
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Tim Wright authored
Fixes #24546 Change-Id: I99ebd5bc18e5c5e42eee4689644a7a8b02405f31 Reviewed-on: https://go-review.googlesource.com/102616 Run-TryBot: Ian Lance Taylor <iant@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by:
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- 26 Mar, 2018 17 commits
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Andrew Bonventre authored
It mentions time.Format3339Nano, which isn’t defined. The underlying code uses time.RFC3339Nano. Updates golang/go#24542 Change-Id: Ia34ae8b66427139d9005f902c2eb60aac4bfa8c6 Reviewed-on: https://go-review.googlesource.com/102607Reviewed-by:
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Brad Fitzpatrick authored
I grepped for "bytes.Buffer" and "buf.String" and mostly ignored test files. I skipped a few on purpose and probably missed a few others, but otherwise I think this should be most of them. Updates #18990 Change-Id: I5a6ae4296b87b416d8da02d7bfaf981d8cc14774 Reviewed-on: https://go-review.googlesource.com/102479 Run-TryBot: Brad Fitzpatrick <bradfitz@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by:
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Hana Kim authored
Change-Id: Ifbefb659a8df3b079d69679871af444b179deaeb Reviewed-on: https://go-review.googlesource.com/102599 Run-TryBot: Hyang-Ah Hana Kim <hyangah@gmail.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by:
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Adam Langley authored
The documentation was unclear here and I misremembered the behaviour and changed it in 1.10: it used to be that matching any EKU was enough but 1.10 requires that all EKUs match. Restore 1.9 behaviour and clarify the documentation to make it official. Fixes #24162. Change-Id: Ic9466cd0799cb27ec3a3a7e6c96f10c2aacc7020 Reviewed-on: https://go-review.googlesource.com/97720 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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Austin Clements authored
The way Value.AuxInt represents unsigned numbers is currently documented in genericOps.go, which is not the most obvious place for it. Move that documentation to Value.AuxInt. Furthermore, to make it harder to use incorrectly, introduce a Value.AuxUnsigned accessor that returns the zero-extended value of Value.AuxInt. Change-Id: I85030c3c68761404058a430e0b1c7464591b2f42 Reviewed-on: https://go-review.googlesource.com/102597 Run-TryBot: Austin Clements <austin@google.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by:
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Tobias Klauser authored
Even though GOARCH=sparc64 is not supported by gc (yet), it is easy to make cgo already support it. This e.g. allows to generate Go type definitions for linux/sparc64 in the golang.org/x/sys/unix package without using gccgo. Change-Id: I8886c81e7c895a0d93e350d81ed653fb59d95dd8 Reviewed-on: https://go-review.googlesource.com/102555 Run-TryBot: Tobias Klauser <tobias.klauser@gmail.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by:
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David Chase authored
Gdb can be sensitive to contents of .gdbinit, and to run this test properly needs to have runtime/runtime-gdb.py on the auto load safe path. Therefore, turn off .gdbinit loading and explicitly add $GOROOT/runtime to the safe load path. This should make ssa/debug_test.go run more consistently. Updates #24464. Change-Id: I63ed17c032cb3773048713ce51fca3a3f86e79b6 Reviewed-on: https://go-review.googlesource.com/102598 Run-TryBot: David Chase <drchase@google.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by:
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Ilya Tocar authored
We already replaced most loops with PutOpBytesLit where possible, do this in a last few places. Change-Id: I8c90de017810145a12394fa6b887755e9111b22a Reviewed-on: https://go-review.googlesource.com/102276 Run-TryBot: Ilya Tocar <ilya.tocar@intel.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by:
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David Chase authored
A newish check for branch-likely on single-successor blocks caught a case where the preemption-check inserter was setting "likely" on an unconditional branch. Fixed by checking for that case before setting likely. Also removed an overconservative restriction on parallel compilation for GOEXPERIMENT=preemptibleloops; it works fine, it is just another control-flow transformation. Change-Id: I8e786e6281e0631cac8d80cff67bfb6402b4d225 Reviewed-on: https://go-review.googlesource.com/102317 Run-TryBot: David Chase <drchase@google.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by:
Austin Clements <austin@google.com>
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Michael Munday authored
We use 32-bit operations for 8- and 16-bit arithmetic, so use them for comparisons too. This won't change performance but it is more consistent and makes testing 8- and 16-bit comparison codegen slightly more straightforward (for follow up CL). Also fix a typo and add some additional double sign and zero extension rules to remove the operations inserted by the comparison rules. Change-Id: I89ec1b0e09cb8be8090cf007be283ad88bba75a4 Reviewed-on: https://go-review.googlesource.com/102556 Run-TryBot: Michael Munday <mike.munday@ibm.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by:
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Zhou Peng authored
This was a typo mistake according to if cond and runtime/mheap.go:323 Change-Id: Id046d4afbfe0ea43cb29e1a9f400e1f130de221d Reviewed-on: https://go-review.googlesource.com/102575Reviewed-by:
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Erwin Oegema authored
This change makes errors in the example code a bit better, as it's no use to show the root dir when an error occurs walking a subdirectory or file. Change-Id: I546276e9b151fabba5357258f03bfbd47a508201 GitHub-Last-Rev: 398c1eeb6164a7edc6fdee8cb8c17c3bd0b649ef GitHub-Pull-Request: golang/go#24536 Reviewed-on: https://go-review.googlesource.com/102535Reviewed-by:
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Agniva De Sarker authored
Add a note that if an error is returned after having read at least the minimum no. of bytes, the error is set to nil. Fixes #20477 Change-Id: I75ba5ee967be3ff80249e40d459da4afeeb53463 Reviewed-on: https://go-review.googlesource.com/102459Reviewed-by:
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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:
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:
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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:
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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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