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Commit Graph

13893 Commits

Author SHA1 Message Date
Charles L. Dorian
0f8f5d2140 math: Faster Tanh
From 159 to 47.6 ns/op; slightly more accurate.

R=rsc, golang-dev, mtj, dave, remyoudompheng
CC=golang-dev
https://golang.org/cl/6500121
2012-09-17 17:18:16 -04:00
Francisco Souza
916ccbf165 cmd/go: reject relative values for GOPATH
Fixes #4062.

R=rsc, dave, r
CC=golang-dev, nicksaika
https://golang.org/cl/6488129
2012-09-17 13:44:55 -07:00
Daniel Morsing
551e263823 cmd/gc: add missing conversion from bool to interface in switches.
In switches without an expression, the compiler would not convert the implicit true to an interface, causing codegen errors.

Fixes #3980.

R=golang-dev, rsc
CC=golang-dev
https://golang.org/cl/6497147
2012-09-17 21:29:10 +02:00
Robert Griesemer
c7631f555f spec: unsafe.Alignof/Sizeof also accept non-variable arguments
Both gc and gccgo permit calls such as unsafe.Sizeof(42). The
spec only permits variable arguments. This is a (backward-compatible)
spec change reflecting the status quo. Seems preferrable over
restricting the compilers.

R=r, rsc, iant, ken
CC=golang-dev
https://golang.org/cl/6494140
2012-09-17 12:23:41 -07:00
Andrew Gerrand
af832ac0b9 misc/dashboard/builder: reinstate 'go get -d' error handling hack
I thought this was redundant since the behavior of 'go get -d' had
changed. I was wrong. Should have tested more thoroughly.

R=golang-dev, minux.ma
CC=golang-dev
https://golang.org/cl/6500136
2012-09-17 11:21:02 -07:00
Sanjay Menakuru
da1ce83732 unicode/utf8: add Examples
R=golang-dev, r
CC=adg, golang-dev
https://golang.org/cl/6493124
2012-09-17 11:06:42 -07:00
Andrew Gerrand
129b2bb19a misc/dashboard/builder: increase default command timeout
R=golang-dev, bradfitz
CC=golang-dev
https://golang.org/cl/6499127
2012-09-17 11:05:43 -07:00
Andrew Gerrand
f005fedfa9 misc/dashboard/builder: add timeout to all external command invocations
Fixes #4083.

R=golang-dev, r
CC=golang-dev
https://golang.org/cl/6498136
2012-09-17 10:41:47 -07:00
Eric Eisner
0aad3cdc59 strings: implement a faster generic Replacer
This also fixes the semantics of some corner cases with the empty
match. TODOs for genericReplacer in the tests are fixed.

benchmark                  old ns/op    new ns/op    delta
BenchmarkGenericNoMatch        71395         3132  -95.61%
BenchmarkGenericMatch1         75610        20280  -73.18%
BenchmarkGenericMatch2        837995        86725  -89.65%

R=nigeltao, rsc
CC=golang-dev
https://golang.org/cl/6492076
2012-09-17 11:50:15 +10:00
Shenghou Ma
a1a414e6f1 run.bash: fix a typo (fix build)
R=golang-dev
CC=golang-dev
https://golang.org/cl/6506121
2012-09-17 01:26:57 +08:00
Shenghou Ma
329b27a566 run.bash: set appropriate ulimits
mainly for NetBSD/OpenBSD.

R=bradfitz, r, rsc
CC=golang-dev
https://golang.org/cl/6453154
2012-09-17 01:11:28 +08:00
Shenghou Ma
ecb2a0a9e5 runtime: fix SI_USER for FreeBSD
Ref: http://svnweb.freebsd.org/base/head/sys/sys/signal.h?revision=HEAD&view=markup

R=golang-dev, devon.odell, r
CC=golang-dev
https://golang.org/cl/6490118
2012-09-17 01:08:41 +08:00
Rob Pike
7b7a7a5737 text/template: towards better errors
Give the right name for errors, and add a test to check we're
getting the errors we expect.
Also fix an ordering bug (calling add after stopParse) that
caused a nil indirection rather than a helpful error.
Fixes #3280.

R=golang-dev, adg
CC=golang-dev
https://golang.org/cl/6520043
2012-09-14 15:25:37 -07:00
Brad Fitzpatrick
5c5c2c8112 os/exec: don't crash when out of fds
Command.Start could crash before if no fds were available
because a nil *os.File of /dev/null was added to the cleanup
list, which crashed before returning the proper error.

R=golang-dev, iant
CC=golang-dev
https://golang.org/cl/6514043
2012-09-14 13:40:22 -07:00
Robert Griesemer
cc06593c68 spec: clarify section on string types
Strings happen to be represented similarly to
byte slices internally, but they don't quite
behave like them: While strings can be indexed,
sliced, and have their len() taken like byte
slices, string elements are not addressable,
make() and cap() is not supported, range loops
operate differently, and they are immutable (and
thus behave like values rather then references).

Fixes #4018.

R=r, rsc, iant, ken
CC=golang-dev
https://golang.org/cl/6503116
2012-09-14 11:31:56 -07:00
Russ Cox
ab224094d0 go/build: use custom file readers to avoid I/O
When reading Go files, read through import block.
When reading non-Go files, read only leading comments.

R=nigeltao, adg, r
CC=golang-dev
https://golang.org/cl/6493068
2012-09-14 12:22:45 -04:00
Russ Cox
ae42beafd3 cmd/go: fix build
TBR=r

TBR=r
CC=golang-dev
https://golang.org/cl/6496124
2012-09-14 12:21:57 -04:00
Russ Cox
ca75fdf972 cmd/go: treat all commands in exp/ as tools
Nothing in exp should get installed directly in bin,
at least not by default.

R=golang-dev, r
CC=golang-dev
https://golang.org/cl/6497138
2012-09-14 12:06:21 -04:00
Marcel van Lohuizen
a4d08ed5df exp/locale/collate: changed API to allow access to different locales through New(),
instead of variables. Several reasons:
- Encourage users of the API to minimize the number of creations and reuse Collate objects.
- Don't rule out the possibility of using initialization code for collators. For some locales
  it will be possible to have very compact representations that can be quickly expanded
  into a proper table on demand.
Other changes:
- Change name of root* vars to main*, as the tables are shared between locales.
- Added Locales() method to get a list of supported locales.

R=r
CC=golang-dev
https://golang.org/cl/6498107
2012-09-14 19:10:02 +09:00
Alex Brainman
db3c800d19 misc/dashboard/builder: use c:\ as default buildroot on windows
We have some tests (misc/cgo/test) that are disabled only because
they will fail to run on go builder - see issue 3358 for details.
This change will allow us to enable these tests.

R=golang-dev, rsc
CC=golang-dev
https://golang.org/cl/6493118
2012-09-14 12:53:30 +10:00
Andrew Gerrand
ab7c8a6200 A+C: add Xing Xing (individual CLA)
R=golang-dev, nigeltao
CC=golang-dev
https://golang.org/cl/6493121
2012-09-14 12:26:45 +10:00
Rob Pike
f269f9a3c7 cmd/yacc: allow utf-8 token values
Also clean up the code and allow \U.
Fixes #3007.

R=golang-dev, rsc, 0xjnml
CC=golang-dev
https://golang.org/cl/6492105
2012-09-13 13:59:00 -07:00
Rob Pike
f3fc0090f4 effective_go: use html/template instead of text/template
Should have done this a long time ago.
Fixes #3811.

R=golang-dev, adg, rsc
CC=golang-dev
https://golang.org/cl/6488120
2012-09-13 13:41:13 -07:00
Jan Ziak
032e5bfb30 ld: add .gcdata and .gcbss sections
R=rsc
CC=golang-dev
https://golang.org/cl/6281048
2012-09-13 15:59:34 -04:00
Brad Fitzpatrick
9a82324fb7 build: print go banner before restoring windows PATH
R=golang-dev, r
CC=golang-dev
https://golang.org/cl/6492117
2012-09-13 12:39:25 -07:00
Daniel Morsing
d06dcd4595 cmd/gc: Specify which package import caused an redeclaration error.
Fixes #4012.

R=dave, remyoudompheng, rsc
CC=golang-dev
https://golang.org/cl/6490082
2012-09-13 18:40:50 +02:00
Adam Langley
ecc04b8927 crypto/tls: allow certificates and key to be in either order.
X509KeyPair wasn't really supposed to allow the certificate and
key to be in the same file, but it did work if you put the key
first. Since some HTTPS servers support loading keys and certs
like this, this change makes it work in either order.

Fixes #3986.

R=golang-dev, dave, rsc
CC=golang-dev
https://golang.org/cl/6499103
2012-09-13 11:00:16 -04:00
Russ Cox
37721cc1ce html/template: fix URL doc
This is the easy part of issue 3528.
(What to do about "noescape" is the hard part, left open.)

Update #3528.

R=mikesamuel, r, dsymonds
CC=golang-dev
https://golang.org/cl/6493113
2012-09-13 10:53:00 -04:00
Russ Cox
ef87c0edae crypto/rsa: reject PublicKey.E if it won't fit in a 32-bit int
Right now we only have 32-bit ints so that's a no-op.
Took the opportunity to check for some other invalid values too.
Suggestions for additions or modifications welcome.

R=agl
CC=golang-dev
https://golang.org/cl/6493112
2012-09-13 10:47:01 -04:00
Russ Cox
6ee91ced92 cmd/pack: rename __.SYMDEF to __.GOSYMDEF
This fixes a problem with ELF tools thinking they know the
format of the symbol table, as we do not use any of the
standard formats for that table.

This change will probably annoy the Plan 9 users, but I
believe there are other incompatibilities already that mean
they have to use a Go-specific nm.

Fixes #3473.

R=golang-dev, iant
CC=golang-dev
https://golang.org/cl/6500117
2012-09-13 10:26:21 -04:00
Francisco Souza
ec9967ff11 go/build: reject empty strings in Import
Fixes #3889.

R=rsc, adg
CC=golang-dev
https://golang.org/cl/6499102
2012-09-13 10:25:35 -04:00
Nigel Tao
237ee39269 image/png: optimize encoding image.Gray and image.NRGBA images.
benchmark                    old ns/op    new ns/op    delta
BenchmarkEncodeGray           23616080      5624558  -76.18%
BenchmarkEncodeNRGBOpaque     34181260     17144380  -49.84%
BenchmarkEncodeNRGBA          41235820     20345990  -50.66%
BenchmarkEncodePaletted        5594652      5620362   +0.46%
BenchmarkEncodeRGBOpaque      17242210     17168820   -0.43%
BenchmarkEncodeRGBA           66515720     67243560   +1.09%

R=r
CC=golang-dev
https://golang.org/cl/6490099
2012-09-13 15:47:12 +10:00
Andrew Gerrand
e7d7ea21d4 undo CL 6493071 / 56c7453d488f
This change messes with anchor links. It obscures the item being linked to.
I don't see a way around it. Undoing for now.

      Fixes #4071.

      ««« original CL description
      doc css: topbar sticks to the top of large windows.
      Rationale: for large screens, the convenience of not having to scroll
      to the top of the page to do a search outweighs having less vertical
      space.
      Tested with Chrome, Firefox, Safari with various window and text sizes.

      R=adg
      CC=gobot, golang-dev
      https://golang.org/cl/6493071

      Committer: Andrew Gerrand <adg@golang.org>
      »»»

R=golang-dev, r, dsymonds
CC=golang-dev
https://golang.org/cl/6488121
2012-09-13 11:14:20 +10:00
Russ Cox
66331532cd net/rpc/jsonrpc: fix test error message
Fixes #4041.

R=golang-dev, bradfitz
CC=golang-dev
https://golang.org/cl/6495121
2012-09-12 17:37:39 -04:00
Jan Ziak
d09afc2efb gc: generate garbage collection info for types
R=rsc, nigeltao, minux.ma
CC=golang-dev
https://golang.org/cl/6290043
2012-09-12 12:08:27 -04:00
Russ Cox
792518c656 cmd/dist: emit \r in env -w output
go tool dist env -w is supposed to print a Windows batch file.
Normally Windows will execute batch files without \r before \n,
but issue 3060 reports that if the file ends up containing paths
written in Chinese, Windows 7 cannot execute it without the \r.
So add the \r.

Fixes #3060.

R=golang-dev, bradfitz
CC=golang-dev
https://golang.org/cl/6498120
2012-09-12 12:05:34 -04:00
Russ Cox
1b4e37a43c spec: make bitwise operators stand out
The (and not) arguably sounds like it is trying to say something - and not what?.

Just an idea, won't be hurt if it gets rejected.

R=gri, dsymonds, r
CC=golang-dev
https://golang.org/cl/6498115
2012-09-12 12:05:24 -04:00
Andreas Jellinghaus
452d6b46a3 syscall: add linux specific Getsockopt for Ucred struct
SO_PEERCRED on unix domain socket will fill a Ucred struct,
thus linux needs a custom Getsockopt variant.
Fixes #3836.

R=golang-dev, rsc, iant
CC=golang-dev
https://golang.org/cl/6445104
2012-09-12 06:38:21 -07:00
Ian Lance Taylor
f5f651b89a C: Add Andreas Jellinghaus (Google CLA)
R=golang-dev, r
CC=golang-dev
https://golang.org/cl/6494121
2012-09-12 06:34:42 -07:00
Nigel Tao
a9a675ec35 cmd/6g, cmd/8g: clean up unnecessary switch code in componentgen.
Code higher up in the function already catches these cases.

R=remyoudompheng, rsc
CC=golang-dev
https://golang.org/cl/6496106
2012-09-12 21:47:05 +10:00
Alex Brainman
18601f88fd os: detect and handle console in File.Write on windows
Fixes #3376.

R=golang-dev, bsiegert, minux.ma, rsc
CC=golang-dev
https://golang.org/cl/6488044
2012-09-12 12:04:45 +10:00
Nigel Tao
6910356ea8 strings: fix NewReplacer(old0, new0, old1, new1, ...) to be consistent
when oldi == oldj.

Benchmark numbers show no substantial change.

R=eric.d.eisner, rogpeppe
CC=golang-dev
https://golang.org/cl/6496104
2012-09-12 10:40:39 +10:00
Nigel Tao
e39072d65f sync/atomic: add package doc for AddT, LoadT and StoreT.
Rename the first argument of CompareAndSwapT and AddT s/val/addr/
for consistency with LoadT and StoreT.

R=rsc, r, dvyukov
CC=golang-dev
https://golang.org/cl/6494112
2012-09-12 10:36:22 +10:00
Daniel Morsing
8fd65b0e1d cmd/gc: Inline pointer sized T2I interface conversions
This CL also adds support for marking the likelyness of IF nodes in the AST being true. This feature is being used here to mark the slow path as unlikely.

src/pkg/runtime:
benchmark                  old ns/op    new ns/op    delta
BenchmarkConvT2IUintptr           16            1  -91.63%

test/bench/go1:
benchmark                 old ns/op    new ns/op    delta
BenchmarkBinaryTree17    5416917000   5461355000   +0.82%
BenchmarkFannkuch11      3810355000   3842609000   +0.85%
BenchmarkGobDecode         19950950     19855420   -0.48%
BenchmarkGobEncode         11301220     11308530   +0.06%
BenchmarkGzip             548119600    546869200   -0.23%
BenchmarkGunzip           176145400    180208300   +2.31%
BenchmarkJSONEncode        93117400     70163100  -24.65%
BenchmarkJSONDecode       406626800    409999200   +0.83%
BenchmarkMandelbrot200      6300992      6317866   +0.27%
BenchmarkParse              7664396      7451625   -2.78%
BenchmarkRevcomp         1189424000   1412332000  +18.74%
BenchmarkTemplate         491308400    458654200   -6.65%

benchmark                  old MB/s     new MB/s  speedup
BenchmarkGobDecode            38.47        38.66    1.00x
BenchmarkGobEncode            67.92        67.87    1.00x
BenchmarkGzip                 35.40        35.48    1.00x
BenchmarkGunzip              110.16       107.68    0.98x
BenchmarkJSONEncode           20.84        27.66    1.33x
BenchmarkJSONDecode            4.77         4.73    0.99x
BenchmarkParse                 7.56         7.77    1.03x
BenchmarkRevcomp             213.69       179.96    0.84x
BenchmarkTemplate              3.95         4.23    1.07x

R=rsc, dave, nigeltao
CC=golang-dev
https://golang.org/cl/6351090
2012-09-11 21:42:30 +02:00
Nigel Tao
0184081eb9 cmd/gc: recognize small TPTR64 values as small integer constants.
Given the following Go program:

func sum(s []int) int {
        ret := 0
        for _, x := range s {
                ret += x
        }
        return ret
}

6g would previously generate:

--- prog list "sum" ---
0000 (main.go:3) TEXT    sum+0(SB),$0-24
0001 (main.go:5) MOVQ    s+0(FP),CX
0002 (main.go:5) MOVL    s+8(FP),DI
0003 (main.go:5) MOVL    s+12(FP),BX
0004 (main.go:4) MOVL    $0,SI
0005 (main.go:5) MOVL    $0,AX
0006 (main.go:5) JMP     ,8
0007 (main.go:5) INCL    ,AX
0008 (main.go:5) CMPL    AX,DI
0009 (main.go:5) JGE     $0,16
0010 (main.go:5) MOVL    (CX),DX
0011 (main.go:5) MOVQ    $4,BX
0012 (main.go:5) ADDQ    CX,BX
0013 (main.go:5) MOVQ    BX,CX
0014 (main.go:6) ADDL    DX,SI
0015 (main.go:5) JMP     ,7
0016 (main.go:8) MOVL    SI,.noname+16(FP)
0017 (main.go:8) RET     ,

and now generates:

--- prog list "sum" ---
0000 (main.go:3) TEXT    sum+0(SB),$0-24
0001 (main.go:5) MOVQ    s+0(FP),CX
0002 (main.go:5) MOVL    s+8(FP),DI
0003 (main.go:5) MOVL    s+12(FP),BX
0004 (main.go:4) MOVL    $0,SI
0005 (main.go:5) MOVL    $0,AX
0006 (main.go:5) JMP     ,8
0007 (main.go:5) INCL    ,AX
0008 (main.go:5) CMPL    AX,DI
0009 (main.go:5) JGE     $0,14
0010 (main.go:5) MOVL    (CX),BP
0011 (main.go:5) ADDQ    $4,CX
0012 (main.go:6) ADDL    BP,SI
0013 (main.go:5) JMP     ,7
0014 (main.go:8) MOVL    SI,.noname+16(FP)
0015 (main.go:8) RET     ,

The key difference is that
0011 (main.go:5) MOVQ    $4,BX
0012 (main.go:5) ADDQ    CX,BX
0013 (main.go:5) MOVQ    BX,CX
has changed to
0011 (main.go:5) ADDQ    $4,CX

R=rsc, dave, remyoudompheng
CC=golang-dev
https://golang.org/cl/6506089
2012-09-11 19:45:28 +10:00
Andrew Gerrand
b64a99da88 C: add Francesc Campoy (Google CLA)
R=golang-dev, dsymonds, campoy
CC=golang-dev
https://golang.org/cl/6490102
2012-09-11 17:15:20 +10:00
Rémy Oudompheng
b45b6fd1c7 cmd/6g, cmd/8g: do not LEA[LQ] interfaces when calling methods.
It is enough to load directly the data word and the itab word
from memory, so we save a LEA instruction for each method call,
and allow elimination of some extra temporaries.

Update #1914.

R=daniel.morsing, rsc
CC=golang-dev, remy
https://golang.org/cl/6501110
2012-09-11 08:45:23 +02:00
Rémy Oudompheng
ff642e290f cmd/6g, cmd/8g: eliminate extra agen for nil comparisons.
Removes an extra LEAL/LEAQ instructions there and usually saves
a useless temporary in the idiom
    if err := foo(); err != nil {...}

Generated code is also less involved:
    MOVQ err+n(SP), AX
    CMPQ AX, $0
(potentially CMPQ n(SP), $0) instead of
    LEAQ err+n(SP), AX
    CMPQ (AX), $0

Update #1914.

R=daniel.morsing, nigeltao, rsc
CC=golang-dev, remy
https://golang.org/cl/6493099
2012-09-11 08:08:40 +02:00
Nigel Tao
b19c32acce strings: more thorough Replacer tests.
This verifies existing behavior. Some replacements are arguably wrong
(these are marked with TODO) but changing behavior is left for a
follow-up CL.

Also fix that BenchmarkGenericMatch wasn't actually matching anything.

R=rsc, eric.d.eisner
CC=bradfitz, golang-dev
https://golang.org/cl/6488110
2012-09-11 14:40:08 +10:00
Andrew Gerrand
b4840366ff C: spell Brian's name correctly
R=iant, nigeltao
CC=golang-dev
https://golang.org/cl/6492102
2012-09-11 14:13:49 +10:00