- 28 Apr, 2016 9 commits
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Keith Randall authored
Make sure we don't do O(n^2) work to eliminate a chain of n copies. benchmark old ns/op new ns/op delta BenchmarkCopyElim1-8 1418 1406 -0.85% BenchmarkCopyElim10-8 5289 5162 -2.40% BenchmarkCopyElim100-8 52618 41684 -20.78% BenchmarkCopyElim1000-8 2473878 424339 -82.85% BenchmarkCopyElim10000-8 269373954 6367971 -97.64% BenchmarkCopyElim100000-8 31272781165 104357244 -99.67% Change-Id: I680f906f70f2ee1a8615cb1046bc510c77d59284 Reviewed-on: https://go-review.googlesource.com/22535Reviewed-by:
Alexandru Moșoi <alexandru@mosoi.ro>
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David Chase authored
Comparison of certain map types could fail to be antisymmetric. This corrects that. Change-Id: I88c6256053ce29950ced4ba4d538e241ee8591fe Reviewed-on: https://go-review.googlesource.com/22552 Run-TryBot: David Chase <drchase@google.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by:
jcd . <jcd@golang.org> Reviewed-by:
Keith Randall <khr@golang.org>
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Dan Peterson authored
Instead of keeping the desired number of seconds and converting to time.Duration for every query, convert to time.Duration when building the config. Updates #15473 Change-Id: Ib24c050b593b3109011e359f4ed837a3fb45dc65 Reviewed-on: https://go-review.googlesource.com/22548Reviewed-by:
Brad Fitzpatrick <bradfitz@golang.org>
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Aliaksandr Valialkin authored
- Simplified the code. - Removed types for slice aliases from composite literals' whitelist, since they are properly handled by vet. Fixes #15408 Updates #9171 Updates #11041 Change-Id: Ia1806c9eb3f327c09d2e28da4ffdb233b5a159b0 Reviewed-on: https://go-review.googlesource.com/22318 Run-TryBot: Rob Pike <r@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by:
Rob Pike <r@golang.org>
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Robert Griesemer authored
Binary export format only. Make sure we don't accidentally export an unnamed parameter in signatures which expect all named parameters; otherwise we crash during import. Appears to happen for _ (blank) parameter names, as observed in method signatures such as the one at: x/tools/godoc/analysis/analysis.go:76. Fixes #15470. TBR=mdempsky Change-Id: I1b1184bf08c4c09d8a46946539c4b8c341acdb84 Reviewed-on: https://go-review.googlesource.com/22543Reviewed-by:
Robert Griesemer <gri@golang.org>
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Robert Griesemer authored
Position info for fields and methods was based on the wrong node in the new export format, leading to position info for empty file names and 0 line numbers. Use correct node now. Due to compact delta encoding, there is no difference in export format size. In fact, because encoding of "no line changed" is uncommon and thus a bit more expensive, in many cases the data is now slightly shorter. Stats for export data size (pachage, before, after, delta%): archive/tar 5128 5025 -1% archive/zip 7672 7515 -1% bufio 3486 3377 -2% bytes 4879 4821 0% cmd/addr2line 66 66 0% cmd/api 14033 13970 0% cmd/asm 60 60 0% cmd/asm/internal/arch 11659 11647 0% cmd/asm/internal/asm 13858 13766 0% cmd/asm/internal/flags 306 300 -1% cmd/asm/internal/lex 15684 15623 0% cmd/cgo 15383 15298 0% cmd/compile 63 63 0% cmd/compile/internal/amd64 838 838 0% cmd/compile/internal/arm 7333 7323 0% cmd/compile/internal/arm64 19953 19951 0% cmd/compile/internal/big 8943 9043 1% cmd/compile/internal/gc 57465 56801 0% cmd/compile/internal/mips64 645 645 0% cmd/compile/internal/ppc64 695 695 0% cmd/compile/internal/s390x 553 553 0% cmd/compile/internal/ssa 34883 34559 0% cmd/compile/internal/x86 744 744 0% cmd/cover 4961 4892 0% cmd/dist 145 145 0% cmd/doc 8891 8853 0% cmd/expdump 67 67 0% cmd/fix 422 406 -3% cmd/go 9951 9747 -1% cmd/gofmt 66 66 0% cmd/internal/bio 6378 6340 0% cmd/internal/gcprog 684 644 -5% cmd/internal/goobj 1276 1193 -6% cmd/internal/obj 12908 12551 -2% cmd/internal/obj/arm 10074 10053 0% cmd/internal/obj/arm64 17723 17699 0% cmd/internal/obj/mips 12573 12530 0% cmd/internal/obj/ppc64 15352 15330 0% cmd/internal/obj/s390x 18785 18769 0% cmd/internal/obj/x86 23586 23551 0% cmd/internal/objfile 17148 17359 1% cmd/internal/pprof/commands 1948 1930 0% cmd/internal/pprof/driver 11123 11095 0% cmd/internal/pprof/fetch 8931 8907 0% cmd/internal/pprof/plugin 15335 15221 0% cmd/internal/pprof/profile 8493 8370 0% cmd/internal/pprof/report 9273 9214 0% cmd/internal/pprof/svg 1589 1589 0% cmd/internal/pprof/symbolizer 8737 8727 0% cmd/internal/pprof/symbolz 8277 8346 1% cmd/internal/pprof/tempfile 4319 4317 0% cmd/internal/sys 622 603 -2% cmd/internal/unvendor/golang.org/x/arch/arm/armasm 79231 79148 0% cmd/internal/unvendor/golang.org/x/arch/x86/x86asm 11761 11726 0% cmd/link 60 60 0% cmd/link/internal/amd64 11190 11178 0% cmd/link/internal/arm 204 204 0% cmd/link/internal/arm64 210 210 0% cmd/link/internal/ld 60670 59758 -1% cmd/link/internal/mips64 213 213 0% cmd/link/internal/ppc64 211 211 0% cmd/link/internal/s390x 210 210 0% cmd/link/internal/x86 203 203 0% cmd/nm 57 57 0% cmd/objdump 64 64 0% cmd/pack 4968 4908 0% cmd/pprof 63 63 0% cmd/trace 828 782 -5% cmd/vet 13485 13503 0% cmd/vet/internal/whitelist 109 109 0% cmd/yacc 1315 1269 -2% compress/bzip2 2561 2506 -1% compress/flate 4906 4748 -2% compress/gzip 7788 7717 0% compress/lzw 406 402 0% compress/zlib 4739 4712 0% container/heap 265 257 -2% container/list 1506 1450 -3% container/ring 556 536 -3% context 3552 3527 0% crypto 864 834 -2% crypto/aes 313 311 0% crypto/cipher 1139 1138 0% crypto/des 317 315 0% crypto/dsa 5326 5304 0% crypto/ecdsa 6383 6364 0% crypto/elliptic 5983 6063 1% crypto/hmac 258 256 0% crypto/md5 722 700 -2% crypto/rand 4996 4993 0% crypto/rc4 327 317 -2% crypto/rsa 6763 6722 0% crypto/sha1 767 744 -2% crypto/sha256 348 348 0% crypto/sha512 487 487 0% crypto/subtle 620 620 0% crypto/tls 24344 24083 0% crypto/x509 17473 17524 0% crypto/x509/pkix 9682 9596 0% database/sql 8099 7831 -2% database/sql/driver 1556 1500 -3% debug/dwarf 9358 9010 -3% debug/elf 28226 27882 0% debug/gosym 2472 2333 -5% debug/macho 9032 8830 -1% debug/pe 8561 8328 -2% debug/plan9obj 1347 1295 -3% encoding 275 261 -4% encoding/ascii85 775 738 -4% encoding/asn1 1280 1246 -2% encoding/base32 1207 1146 -4% encoding/base64 1471 1407 -3% encoding/binary 2430 2386 -1% encoding/csv 4347 4280 -1% encoding/gob 13488 13387 0% encoding/hex 665 646 -2% encoding/json 11763 11592 0% encoding/pem 283 273 -3% encoding/xml 13804 13631 0% errors 166 162 -1% expvar 1193 1139 -4% flag 6896 6964 1% fmt 1247 1213 -2% go/ast 15797 15473 -1% go/build 6497 6336 -1% go/constant 1846 1820 0% go/doc 3942 3871 -1% go/format 1854 1850 0% go/importer 1702 1695 0% go/internal/gccgoimporter 2084 2063 0% go/internal/gcimporter 3236 3253 1% go/parser 7377 7371 0% go/printer 2480 2469 0% go/scanner 3806 3733 -1% go/token 3579 3523 -1% go/types 26514 26117 0% hash 323 295 -8% hash/adler32 568 554 -1% hash/crc32 843 825 -1% hash/crc64 758 739 -2% hash/fnv 1583 1530 -2% html 113 113 0% html/template 16957 16937 0% image 11470 11045 -3% image/color 2566 2503 -1% image/color/palette 165 163 0% image/draw 2543 2522 0% image/gif 3467 3439 0% image/internal/imageutil 3481 3479 0% image/jpeg 2725 2717 0% image/png 2702 2689 0% index/suffixarray 5802 5777 0% internal/race 274 274 0% internal/singleflight 756 718 -4% internal/syscall/windows/sysdll 162 162 0% internal/testenv 5288 5276 0% internal/trace 1853 1768 -4% io 3425 3349 -1% io/ioutil 4768 4756 0% log 4173 4224 1% log/syslog 5049 4996 0% math 4343 4343 0% math/big 8779 8817 0% math/cmplx 1580 1580 0% math/rand 944 982 4% mime 2313 2298 0% mime/multipart 5021 4922 -1% mime/quotedprintable 2049 2008 -1% net 19332 19090 0% net/http 50404 49542 -1% net/http/cgi 22533 22637 0% net/http/cookiejar 5488 5431 0% net/http/fcgi 20557 20512 0% net/http/httptest 30350 30255 0% net/http/httputil 24045 23964 0% net/http/internal 2579 2550 0% net/http/pprof 20307 20258 0% net/internal/socktest 2227 2159 -2% net/mail 5086 5054 0% net/rpc 28365 28208 0% net/rpc/jsonrpc 12805 12722 0% net/smtp 19975 19887 0% net/textproto 4558 4466 -1% net/url 1391 1326 -4% os 10372 10195 -1% os/exec 7814 7928 1% os/signal 239 237 0% os/user 735 717 -1% path 391 391 0% path/filepath 4136 4136 0% reflect 6258 5893 -5% regexp 5808 5623 -2% regexp/syntax 3118 3077 0% runtime 11685 10912 -6% runtime/cgo 18 18 0% runtime/debug 3320 3304 0% runtime/internal/atomic 728 728 0% runtime/internal/sys 2287 2287 0% runtime/pprof 611 587 -3% runtime/race 19 19 0% runtime/trace 145 143 0% sort 1229 1206 -1% strconv 1752 1744 0% strings 3809 3775 0% sync 1331 1306 -1% sync/atomic 1135 1130 0% syscall 46280 45722 0% testing 7558 7284 -3% testing/iotest 1122 1071 -4% testing/quick 5656 5609 0% text/scanner 3367 3312 -1% text/tabwriter 2810 2755 -1% text/template 15613 15595 0% text/template/parse 9499 9040 -4% time 5515 5395 -1% unicode 4357 4344 0% unicode/utf16 583 583 0% unicode/utf8 970 970 0% vendor/golang.org/x/net/http2/hpack 4105 4012 -1% average 1524284 1509610 0% Change-Id: Ibe1ce098c7c575965389c1cad368c62c2cea256a Reviewed-on: https://go-review.googlesource.com/22536 Run-TryBot: Robert Griesemer <gri@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by:Matthew Dempsky <mdempsky@google.com> Reviewed-by:
Alan Donovan <adonovan@google.com>
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Mikio Hara authored
Fixes #15463. Change-Id: Ic85886861c650ffcb71240d847941534152b92bc Reviewed-on: https://go-review.googlesource.com/22540 Run-TryBot: Mikio Hara <mikioh.mikioh@gmail.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by:
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David du Colombier authored
Updates #15464. Change-Id: If3221034bb10751c6fcf1fbeba401a879c18079f Reviewed-on: https://go-review.googlesource.com/22513 Run-TryBot: David du Colombier <0intro@gmail.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by:
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Dave Cheney authored
Updates #15462 Unexport Jconv, Sconv, Fconv, Hconv, Bconv, and VConv as they are not referenced outside internal/gc. Econv was only called by EType.String, so merge it into that method. Change-Id: Iad9b06078eb513b85a03a43cd9eb9366477643d1 Reviewed-on: https://go-review.googlesource.com/22531Reviewed-by:
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- 27 Apr, 2016 28 commits
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Dave Cheney authored
Updates #15462 Replace all use of oconv(op, FmtSharp) with fmt.Printf("%#v", op). This removes all the callers of oconv. Change-Id: Ic3bf22495147f8497c8bada01d681428e2405b0e Reviewed-on: https://go-review.googlesource.com/22530Reviewed-by: -
Brad Fitzpatrick authored
Fixes #15325 Change-Id: I60137ecf27e236e97734b1730ce29ab23e9fe07f Reviewed-on: https://go-review.googlesource.com/22509Reviewed-by:
Ian Lance Taylor <iant@golang.org>
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Brad Fitzpatrick authored
It wasn't rendering as HTML nicely. Change-Id: I5408ec22932a05e85c210c0faa434bd19dce5650 Reviewed-on: https://go-review.googlesource.com/22532Reviewed-by:
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Michael Munday authored
Adapted from md5block_amd64.s. name old speed new speed delta Hash8Bytes 14.0MB/s ± 1% 39.9MB/s ± 0% +185.52% (p=0.000 n=9+10) Hash1K 176MB/s ± 1% 661MB/s ± 1% +274.44% (p=0.000 n=10+10) Hash8K 196MB/s ± 0% 742MB/s ± 1% +278.35% (p=0.000 n=10+9) Hash8BytesUnaligned 14.2MB/s ± 2% 39.8MB/s ± 0% +180.06% (p=0.000 n=10+10) Hash1KUnaligned 177MB/s ± 1% 651MB/s ± 0% +267.38% (p=0.000 n=10+10) Hash8KUnaligned 197MB/s ± 1% 731MB/s ± 1% +271.73% (p=0.000 n=10+10) Change-Id: I45ece98ee10f30fcd192b9c3d743ba61c248f36a Reviewed-on: https://go-review.googlesource.com/22505Reviewed-by:
Bill O'Farrell <billotosyr@gmail.com> Reviewed-by:
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Michael Hudson-Doyle authored
These symbols are de-duplicated in the linker but the compiler generates quite many duplicates too: 2425 of 13769 total symbols for runtime.a for example. De-duplicating them in the compiler saves the linker a bit of work. Fixes #14983 Change-Id: I5f18e5f9743563c795aad8f0a22d17a7ed147711 Reviewed-on: https://go-review.googlesource.com/22293Reviewed-by:
David Crawshaw <crawshaw@golang.org>
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Dave Cheney authored
Updates #15462 Automatic refactor with sed -e. Replace all oconv(op, 0) to string conversion with the raw op value which fmt's %v verb can print directly. The remaining oconv(op, FmtSharp) will be replaced with op.GoString and %#v in the next CL. Change-Id: I5e2f7ee0bd35caa65c6dd6cb1a866b5e4519e641 Reviewed-on: https://go-review.googlesource.com/22499 Run-TryBot: Dave Cheney <dave@cheney.net> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by:
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Dan Peterson authored
Fixes #14897 Change-Id: Iffe7462983a5623a37aa0dc6f74c8c70e10c3244 Reviewed-on: https://go-review.googlesource.com/21464Reviewed-by:
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Damien Neil authored
Change-Id: I28980b307d10730b122a4f833809bc400d6aff24 Reviewed-on: https://go-review.googlesource.com/22525Reviewed-by:
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Cherry Zhang authored
After CL 22461, c-archive build on darwin/arm is by default compiled with -shared, so update the install path. Fix build. Change-Id: Ie93dbd226ed416b834da0234210f4b98bc0e3606 Reviewed-on: https://go-review.googlesource.com/22507Reviewed-by:
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Austin Clements authored
Currently the runtime rescans globals during mark 2 and mark termination. This costs as much as 500µs/MB in STW time, which is enough to surpass the 10ms STW limit with only 20MB of globals. It's also basically unnecessary. The compiler already generates write barriers for global -> heap pointer updates and the regular write barrier doesn't check whether the slot is a global or in the heap. Some less common write barriers do cause problems. heapBitsBulkBarrier, which is used by typedmemmove and related functions, currently depends on having access to the pointer bitmap and as a result ignores writes to globals. Likewise, the reflect-related write barriers reflect_typedmemmovepartial and callwritebarrier ignore non-heap destinations; though it appears they can never be called with global pointers anyway. This commit makes heapBitsBulkBarrier issue write barriers for writes to global pointers using the data and BSS pointer bitmaps, removes the inheap checks from the reflection write barriers, and eliminates the rescans during mark 2 and mark termination. It also adds a test that writes to globals have write barriers. Programs with large data+BSS segments (with pointers) aren't common, but for programs that do have large data+BSS segments, this significantly reduces pause time: name \ 95%ile-time/markTerm old new delta LargeBSS/bss:1GB/gomaxprocs:4 148200µs ± 6% 302µs ±52% -99.80% (p=0.008 n=5+5) This very slightly improves the go1 benchmarks: name old time/op new time/op delta BinaryTree17-12 2.62s ± 3% 2.62s ± 4% ~ (p=0.904 n=20+20) Fannkuch11-12 2.15s ± 1% 2.13s ± 0% -1.29% (p=0.000 n=18+20) FmtFprintfEmpty-12 48.3ns ± 2% 47.6ns ± 1% -1.52% (p=0.000 n=20+16) FmtFprintfString-12 152ns ± 0% 152ns ± 1% ~ (p=0.725 n=18+18) FmtFprintfInt-12 150ns ± 1% 149ns ± 1% -1.14% (p=0.000 n=19+20) FmtFprintfIntInt-12 250ns ± 0% 244ns ± 1% -2.12% (p=0.000 n=20+18) FmtFprintfPrefixedInt-12 219ns ± 1% 217ns ± 1% -1.20% (p=0.000 n=19+20) FmtFprintfFloat-12 280ns ± 0% 281ns ± 1% +0.47% (p=0.000 n=19+19) FmtManyArgs-12 928ns ± 0% 923ns ± 1% -0.53% (p=0.000 n=19+18) GobDecode-12 7.21ms ± 1% 7.24ms ± 2% ~ (p=0.091 n=19+19) GobEncode-12 6.07ms ± 1% 6.05ms ± 1% -0.36% (p=0.002 n=20+17) Gzip-12 265ms ± 1% 265ms ± 1% ~ (p=0.496 n=20+19) Gunzip-12 39.6ms ± 1% 39.3ms ± 1% -0.85% (p=0.000 n=19+19) HTTPClientServer-12 74.0µs ± 2% 73.8µs ± 1% ~ (p=0.569 n=20+19) JSONEncode-12 15.4ms ± 1% 15.3ms ± 1% -0.25% (p=0.049 n=17+17) JSONDecode-12 53.7ms ± 2% 53.0ms ± 1% -1.29% (p=0.000 n=18+17) Mandelbrot200-12 3.97ms ± 1% 3.97ms ± 0% ~ (p=0.072 n=17+18) GoParse-12 3.35ms ± 2% 3.36ms ± 1% +0.51% (p=0.005 n=18+20) RegexpMatchEasy0_32-12 72.7ns ± 2% 72.2ns ± 1% -0.70% (p=0.005 n=19+19) RegexpMatchEasy0_1K-12 246ns ± 1% 245ns ± 0% -0.60% (p=0.000 n=18+16) RegexpMatchEasy1_32-12 72.8ns ± 1% 72.5ns ± 1% -0.37% (p=0.011 n=18+18) RegexpMatchEasy1_1K-12 380ns ± 1% 385ns ± 1% +1.34% (p=0.000 n=20+19) RegexpMatchMedium_32-12 115ns ± 2% 115ns ± 1% +0.44% (p=0.047 n=20+20) RegexpMatchMedium_1K-12 35.4µs ± 1% 35.5µs ± 1% ~ (p=0.079 n=18+19) RegexpMatchHard_32-12 1.83µs ± 0% 1.80µs ± 1% -1.76% (p=0.000 n=18+18) RegexpMatchHard_1K-12 55.1µs ± 0% 54.3µs ± 1% -1.42% (p=0.000 n=18+19) Revcomp-12 386ms ± 1% 381ms ± 1% -1.14% (p=0.000 n=18+18) Template-12 61.5ms ± 2% 61.5ms ± 2% ~ (p=0.647 n=19+20) TimeParse-12 338ns ± 0% 336ns ± 1% -0.72% (p=0.000 n=14+19) TimeFormat-12 350ns ± 0% 357ns ± 0% +2.05% (p=0.000 n=19+18) [Geo mean] 55.3µs 55.0µs -0.41% Change-Id: I57e8720385a1b991aeebd111b6874354308e2a6b Reviewed-on: https://go-review.googlesource.com/20829 Run-TryBot: Austin Clements <austin@google.com> Reviewed-by:
Rick Hudson <rlh@golang.org>
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Austin Clements authored
These are used at the bottom level of various GC operations that must not be preempted. To be on the safe side, mark them all nosplit. Change-Id: I8f7360e79c9852bd044df71413b8581ad764380c Reviewed-on: https://go-review.googlesource.com/22504 Run-TryBot: Austin Clements <austin@google.com> Reviewed-by:
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David Crawshaw authored
The new type was inheriting the tflagExtraStar from its prototype. Fixes #15467 Change-Id: Ic22c2a55cee7580cb59228d52b97e1c0a1e60220 Reviewed-on: https://go-review.googlesource.com/22501Reviewed-by:
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David Crawshaw authored
Fixes #15468 Change-Id: I8723171f87774a98d5e80e7832ebb96dd1fbea74 Reviewed-on: https://go-review.googlesource.com/22524Reviewed-by:
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Zhongwei Yao authored
performance: benchmark old ns/op new ns/op delta BenchmarkDivconstI64-8 8.28 2.70 -67.39% BenchmarkDivconstU64-8 8.28 4.69 -43.36% BenchmarkDivconstI32-8 8.28 6.39 -22.83% BenchmarkDivconstU32-8 8.28 4.43 -46.50% BenchmarkDivconstI16-8 5.17 5.17 +0.00% BenchmarkDivconstU16-8 5.33 5.34 +0.19% BenchmarkDivconstI8-8 3.50 3.50 +0.00% BenchmarkDivconstU8-8 3.51 3.50 -0.28% Fixes #15382 Change-Id: Ibce7b28f0586d593b33c4d4ecc5d5e7e7c905d13 Reviewed-on: https://go-review.googlesource.com/22292Reviewed-by:
Michael Munday <munday@ca.ibm.com> Reviewed-by:
David Chase <drchase@google.com>
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Robert Griesemer authored
builtin.go was auto-generated via go generate; all other changes were manual. The new format reduces the export data size by ~65% on average for the std library packages (and there is still quite a bit of room for improvement). The average time to write export data is reduced by (at least) 62% as measured in one run over the std lib, it is likely more. The average time to read import data is reduced by (at least) 37% as measured in one run over the std lib, it is likely more. There is also room to improve this time. The compiler transparently handles both packages using the old and the new format. Comparing the -S output of the go build for each package via the cmp.bash script (added) shows identical assembly code for all packages, but 6 files show file:line differences: The following files have differences because they use cgo and cgo uses different temp. directories for different builds. Harmless. src/crypto/x509 src/net src/os/user src/runtime/cgo The following files have file:line differences that are not yet fully explained; however the differences exist w/ and w/o new export format (pre-existing condition). See issue #15453. src/go/internal/gccgoimporter src/go/internal/gcimporter In summary, switching to the new export format produces the same package files as before for all practical purposes. How can you tell which one you have (if you care): Open a package (.a) file in an editor. Textual export data starts with a $$ after the header and is more or less legible; binary export data starts with a $$B after the header and is mostly unreadable. A stand-alone decoder (for debugging) is in the works. In case of a problem, please first try reverting back to the old textual format to determine if the cause is the new export format: For a stand-alone compiler invocation: - go tool compile -newexport=0 <files> For a single package: - go build -gcflags="-newexport=0" <pkg> For make/all.bash: - (export GO_GCFLAGS="-newexport=0"; sh make.bash) Fixes #13241. Change-Id: I2588cb463be80af22446bf80c225e92ab79878b8 Reviewed-on: https://go-review.googlesource.com/22123Reviewed-by:
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Michael Matloob authored
This regexp has many parallel alternations Change-Id: I8044f460aa7d18f20cb0452e9470557b87facd6d Reviewed-on: https://go-review.googlesource.com/22471Reviewed-by:
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Cherry Zhang authored
Now it is possible to build a c-archive as PIC on darwin/arm (this is now the default). Then the system linker can link the binary using the archive as PIE. Fixes #12896. Change-Id: Iad84131572422190f5fa036e7d71910dc155f155 Reviewed-on: https://go-review.googlesource.com/22461Reviewed-by:
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Robert Griesemer authored
TestBuiltin will fail if run on Windows and builtin.go was generated on a non-Windows machine (or vice versa) because path names have different separators. Avoid problem altogether by not writing pos info for builtin packages. It's not needed. Affects -newexport only. Change-Id: I8944f343452faebaea9a08b5fb62829bed77c148 Reviewed-on: https://go-review.googlesource.com/22498 Run-TryBot: Robert Griesemer <gri@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by:
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Keith Randall authored
The line numbers of ONAMEs are the location of their declaration, not their use. The line numbers of named OLITERALs are also the location of their declaration. Ignore both of these. Instead, we will inherit the line number from the containing syntactic item. Fixes #14742 Fixes #15430 Change-Id: Ie43b5b9f6321cbf8cead56e37ccc9364d0702f2f Reviewed-on: https://go-review.googlesource.com/22479Reviewed-by:
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Zhongwei Yao authored
Current V-register range is V32~V63 on arm64. This patch changes it to V0~V31. fix #15465. Change-Id: I90dab42dea46825ec5d7a8321ec4f6550735feb8 Reviewed-on: https://go-review.googlesource.com/22520Reviewed-by:
Aram Hăvărneanu <aram@mgk.ro> Run-TryBot: Aram Hăvărneanu <aram@mgk.ro> TryBot-Result: Gobot Gobot <gobot@golang.org>
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Dmitry Vyukov authored
TestNoRaceIOHttp does all kinds of bad things: 1. Binds to a fixed port, so concurrent tests fail. 2. Registers HTTP handler multiple times, so repeated tests fail. 3. Relies on sleep to wait for listen. Fix all of that. Change-Id: I1210b7797ef5e92465b37dc407246d92a2a24fe8 Reviewed-on: https://go-review.googlesource.com/19953 Run-TryBot: Dmitry Vyukov <dvyukov@google.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by:
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Martin Möhrmann authored
Apply optimizations used to speed up YCbCrToRGB from https://go-review.googlesource.com/#/c/21910/ to RGBToYCbCr. name old time/op new time/op delta RGBToYCbCr/0-2 6.81ns ± 0% 5.96ns ± 0% -12.48% (p=0.000 n=38+50) RGBToYCbCr/Cb-2 7.68ns ± 0% 6.13ns ± 0% -20.21% (p=0.000 n=50+33) RGBToYCbCr/Cr-2 6.84ns ± 0% 6.04ns ± 0% -11.70% (p=0.000 n=39+42) Updates #15260 Change-Id: If3ea5393ae371a955ddf18ab226aae20b48f9692 Reviewed-on: https://go-review.googlesource.com/22411Reviewed-by:
Josh Bleecher Snyder <josharian@gmail.com> Run-TryBot: Josh Bleecher Snyder <josharian@gmail.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by:
Ralph Corderoy <ralph@inputplus.co.uk>
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Dave Cheney authored
Updates #15462 Semi automatic change with gofmt -r and hand fixups for callers outside internal/gc. All the uses of gc.Oconv outside cmd/compile/internal/gc were for the Oconv(op, 0) form, which is already handled the Op.String method. Replace the use of gc.Oconv(op, 0) with op itself, which will call Op.String via the %v or %s verb. Unexport Oconv. Change-Id: I84da2a2e4381b35f52efce427b2d6a3bccdf2526 Reviewed-on: https://go-review.googlesource.com/22496 Run-TryBot: Dave Cheney <dave@cheney.net> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by:
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Josh Bleecher Snyder authored
Change-Id: Ief4707747338912216a8509b1adbf655c8ffac56 Reviewed-on: https://go-review.googlesource.com/22495 Run-TryBot: Josh Bleecher Snyder <josharian@gmail.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by:
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Brad Fitzpatrick authored
Previously the Transport would cache idle connections from the Transport for later reuse, but if a peer server disconnected (e.g. idle timeout), we would not proactively remove the *persistConn from the Transport's idle list, leading to a waste of memory (potentially forever). Instead, when the persistConn's readLoop terminates, remote it from the idle list, if present. This also adds the beginning of accounting for the total number of idle connections, which will be needed for Transport.MaxIdleConns later. Updates #15461 Change-Id: Iab091f180f8dd1ee0d78f34b9705d68743b5557b Reviewed-on: https://go-review.googlesource.com/22492Reviewed-by:
Andrew Gerrand <adg@golang.org>
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Brad Fitzpatrick authored
Fixes #15449 Change-Id: I8d84d076a05c56694b48f7b84f572b1a6524f522 Reviewed-on: https://go-review.googlesource.com/22493Reviewed-by:
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Russ Cox authored
It comes up every few months that we can't understand why the go command is rebuilding some package. Add diagnostics so that the go command can explain itself if asked. For #2775, #3506, #12074. Change-Id: I1c73b492589b49886bf31a8f9d05514adbd6ed70 Reviewed-on: https://go-review.googlesource.com/22432Reviewed-by:
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Michael Munday authored
Renames block to blockGeneric so that it can be called when the assembly feature check fails. This means making block a var on platforms without an assembly implementation (similar to the sha1 package). Also adds a test to check that the fallback path works correctly when the feature check fails. name old speed new speed delta Hash8Bytes 6.42MB/s ± 1% 27.14MB/s ± 0% +323.01% (p=0.000 n=10+10) Hash1K 53.9MB/s ± 0% 511.1MB/s ± 0% +847.57% (p=0.000 n=10+9) Hash8K 57.1MB/s ± 1% 609.7MB/s ± 0% +967.04% (p=0.000 n=10+10) Change-Id: If962b2a5c9160b3a0b76ccee53b2fd809468ed3d Reviewed-on: https://go-review.googlesource.com/22460 Run-TryBot: Michael Munday <munday@ca.ibm.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by:
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- 26 Apr, 2016 3 commits
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Austin Clements authored
Currently the stack re-scan during mark termination is O(# stacks) because we enqueue a root marking job for every goroutine. It takes ~34ns to process this root marking job for a valid (clean) stack, so at around 300k goroutines we exceed the 10ms pause goal. A non-trivial portion of this time is spent simply taking the cache miss to check the gcscanvalid flag, so simply optimizing the path that handles clean stacks can only improve this so much. Fix this by keeping an explicit list of goroutines with dirty stacks that need to be rescanned. When a goroutine first transitions to running after a stack scan and marks its stack dirty, it adds itself to this list. We enqueue root marking jobs only for the goroutines in this list, so this improves stack re-scanning asymptotically by completely eliminating time spent on clean goroutines. This reduces mark termination time for 500k idle goroutines from 15ms to 238µs. Overall performance effect is negligible. name \ 95%ile-time/markTerm old new delta IdleGs/gs:500000/gomaxprocs:12 15000µs ± 0% 238µs ± 5% -98.41% (p=0.000 n=10+10) name old time/op new time/op delta XBenchGarbage-12 2.30ms ± 3% 2.29ms ± 1% -0.43% (p=0.049 n=17+18) name old time/op new time/op delta BinaryTree17-12 2.57s ± 3% 2.59s ± 2% ~ (p=0.141 n=19+20) Fannkuch11-12 2.09s ± 0% 2.10s ± 1% +0.53% (p=0.000 n=19+19) FmtFprintfEmpty-12 45.3ns ± 3% 45.2ns ± 2% ~ (p=0.845 n=20+20) FmtFprintfString-12 129ns ± 0% 127ns ± 0% -1.55% (p=0.000 n=16+16) FmtFprintfInt-12 123ns ± 0% 119ns ± 1% -3.24% (p=0.000 n=19+19) FmtFprintfIntInt-12 195ns ± 1% 189ns ± 1% -3.11% (p=0.000 n=17+17) FmtFprintfPrefixedInt-12 193ns ± 1% 187ns ± 1% -3.06% (p=0.000 n=19+19) FmtFprintfFloat-12 254ns ± 0% 255ns ± 1% +0.35% (p=0.001 n=14+17) FmtManyArgs-12 781ns ± 0% 770ns ± 0% -1.48% (p=0.000 n=16+19) GobDecode-12 7.00ms ± 1% 6.98ms ± 1% ~ (p=0.563 n=19+19) GobEncode-12 5.91ms ± 1% 5.92ms ± 0% ~ (p=0.118 n=19+18) Gzip-12 219ms ± 1% 215ms ± 1% -1.81% (p=0.000 n=18+18) Gunzip-12 37.2ms ± 0% 37.4ms ± 0% +0.45% (p=0.000 n=17+19) HTTPClientServer-12 76.9µs ± 3% 77.5µs ± 2% +0.81% (p=0.030 n=20+19) JSONEncode-12 15.0ms ± 0% 14.8ms ± 1% -0.88% (p=0.001 n=15+19) JSONDecode-12 50.6ms ± 0% 53.2ms ± 2% +5.07% (p=0.000 n=17+19) Mandelbrot200-12 4.05ms ± 0% 4.05ms ± 1% ~ (p=0.581 n=16+17) GoParse-12 3.34ms ± 1% 3.30ms ± 1% -1.21% (p=0.000 n=15+20) RegexpMatchEasy0_32-12 69.6ns ± 1% 69.8ns ± 2% ~ (p=0.566 n=19+19) RegexpMatchEasy0_1K-12 238ns ± 1% 236ns ± 0% -0.91% (p=0.000 n=17+13) RegexpMatchEasy1_32-12 69.8ns ± 1% 70.0ns ± 1% +0.23% (p=0.026 n=17+16) RegexpMatchEasy1_1K-12 371ns ± 1% 363ns ± 1% -2.07% (p=0.000 n=19+19) RegexpMatchMedium_32-12 107ns ± 2% 106ns ± 1% -0.51% (p=0.031 n=18+20) RegexpMatchMedium_1K-12 33.0µs ± 0% 32.9µs ± 0% -0.30% (p=0.004 n=16+16) RegexpMatchHard_32-12 1.70µs ± 0% 1.70µs ± 0% +0.45% (p=0.000 n=16+17) RegexpMatchHard_1K-12 51.1µs ± 2% 51.4µs ± 1% +0.53% (p=0.000 n=17+19) Revcomp-12 378ms ± 1% 385ms ± 1% +1.92% (p=0.000 n=19+18) Template-12 64.3ms ± 2% 65.0ms ± 2% +1.09% (p=0.001 n=19+19) TimeParse-12 315ns ± 1% 317ns ± 2% ~ (p=0.108 n=18+20) TimeFormat-12 360ns ± 1% 337ns ± 0% -6.30% (p=0.000 n=18+13) [Geo mean] 51.8µs 51.6µs -0.48% Change-Id: Icf8994671476840e3998236e15407a505d4c760c Reviewed-on: https://go-review.googlesource.com/20700Reviewed-by:
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Austin Clements authored
Currently we clear gcscanvalid in both casgstatus and casfrom_Gscanstatus if the new status is _Grunning. This is very important to do in casgstatus. However, this is potentially wrong in casfrom_Gscanstatus because in this case the caller doesn't own gp and hence the write is racy. Unlike the other _Gscan statuses, during _Gscanrunning, the G is still running. This does not indicate that it's transitioning into a running state. The scan simply hasn't happened yet, so it's neither valid nor invalid. Conveniently, this also means clearing gcscanvalid is unnecessary in this case because the G was already in _Grunning, so we can simply remove this code. What will happen instead is that the G will be preempted to scan itself, that scan will set gcscanvalid to true, and then the G will return to _Grunning via casgstatus, clearing gcscanvalid. This fix will become necessary shortly when we start keeping track of the set of G's with dirty stacks, since it will no longer be idempotent to simply set gcscanvalid to false. Change-Id: I688c82e6fbf00d5dbbbff49efa66acb99ee86785 Reviewed-on: https://go-review.googlesource.com/20669Reviewed-by:
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Austin Clements authored
Change-Id: Id4ad7ebf88a21eba2bc5714b96570ed5cfaed757 Reviewed-on: https://go-review.googlesource.com/22210Reviewed-by:
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